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HomeMy WebLinkAbout1.0 ApplicationENCANA.. East Dry Hollow Loop Phase I Pipeline Development Plan March 2008 East Dry Hollow Loop Phase 1 Pipeline GARFIELD COUNTY Building & Planning Department 108 8th Street, Suite 401 Glenwood Springs, Colorado 81601 Telephone: 970.945.8212 Facsimile: 970.384.3470 www.garfield-county.com A.. " ` ED 1 2008 t>. '1 AiNNTNG Pipeline Development Plan Permit GENERAL INFORMATION > General Location of the Pipeline (Right -of -Way): Begins just south of P4E pad, Sectior 4, Township 7 South, Range 92 West; northwesterly to Sec. 9, Township 7 South, Range 92 West; southwesterly thru Sec. 4, Township 7 South, Range 92 West and ends at the inlet to Hunter Mesa Compressor Station; all on fee land; 75 foot right-of-way > Diameter and Distance the pipeline: Up to 20 inch diameter and +/- 17,222 feet in length > Existing Use & Size of Property in acres: Parallels EnCana's existing 8 and 12 inch gas lines along previously disturbed pipeline corridor; approximately 3.27 acres > Description of Proposed Pipeline: Approximately 3.27 miles of 20 inch diameter, 0.281 inch wall X52/60 FBE buried, steel, natural gas pipeline Zone District(s): Agriculture Residential Rural Density > Name of Owner of Right -of -Way: EnCana oil & Gas (USA) Inc. i Address: 2717 County Road 215, Suite 100 Telephone: 970-285-2825 i City: Parachute State: C0 Zip Code: 81635 FAX: 970-285-2691 > Name of Owner's Representative, if any (Attorney, Planner, etc): > Address: Telephone: > City: State: Zip Code: FAX: STAFF USEONLY � ➢ Doc. No.: t ir�c� Date Submitted:�' l OK ' TC Date: ➢ Planner: fl/� sir Hearing Date: TOMBSTONE PHASE 3 PIPELINE I. APPLICATION SUBMITTAL REQUIREMENTS As a minimum, specifically respond to all the following items below and attach any additional information to be submitted with this application: Development Plan Submissions: The applicant shall submit eight copies of the proposed development plan with the completed application form to the Planning Director. The following information must be submitted with a development plan application: (1) Vicinity map indicating the section, township, and range of the site, and its relation to surrounding public roads and municipal boundaries. Project maps are provided in Attachment 1. (2) Project Overview: a description of the project including the length of the pipeline, diameter of the pipeline, pipeline commodity, and the general description of the pipeline route. EnCana Oil & Gas (USA) Inc. (EnCana) is proposing the installation of a new 20 -inch diameter buried steel, low pressure gathering pipeline in the Mamm Creek field. This East Dry Hollow Loop Phase 1 pipeline (project) involves construction, operation, and maintenance of a new trunk pipeline. The 20 -inch pipeline will gather and transport natural gas from existing and new wells in the eastern portion of the Mamm Creek field. The 20 -inch pipeline will be approximately 17,222 feet (-3.27 miles) in length. The pipeline will start at EnCana's P4E pad (S1/2 SE1/4 Section 4, Township 7 South, Range 92 West) and end at the inlet of Hunter Mesa Compressor Station (SE1/4 Section 1, Township 7 South, Range 92 West). The pipeline and related above -ground facilities will be located in Garfield County, Colorado. The proposed project is approximately 3.27 miles in length of up to 20 -inch diameter steel pipe. The 20 -inch pipeline is designed to a Maximum Allowable Operating Pressure (MAOP) of 435 psig (30% of SMYS) ANSI B31.8 with a Location 2 (0.6) safety design factor. The pipeline will be constructed using X-52 grade pipe, 0.281 inch wall thickness, and ANSI 300 rated flanges. The system will be pressure protected with a Pressure Safety Valve (PSV) to prevent over- pressuring. The pipeline will require above -ground appurtenances (block valves, pig launchers and receivers) at both ends of the pipeline. Additional above ground appurtenances will be required to connect existing gathering lines to the new 20 -inch loop line. A PSV will be installed at the Hunter Mesa Compressor Station. (3) Ownership A. For individual right-of-way, a diagram showing adjacent properties and the approximate location of buildings and their uses within a distance of 350 feet of any proposed structure, facility, or area to be disturbed. This may be drawn at a smaller scale than the site plan. B. For an area plan, the map will show the property boundaries and ownership information for all private and public property include in the development area. DEVELOPMENT PLAN APPLICATION 03/01/2008 TOMBSTONE PHASE 3 PIPELINE There is one house located within 350 feet of the proposed project. Reference the Garfield County Assessors Map provided in Attachment 1. (4) Evidence of surface owner notification and of surface agreements where the surface owner is not a party to the mineral lease. The pipeline crosses four landowners. All landowners within 200 feet of the project are affected surface owners. Please note that EnCana did not determine if the surface owners are party to the mineral lease and is instead providing copies of Right -of -Way Easements for each surface landowner. Return receipts providing notification to each landowner will be provided upon receipt. Landowner information is provided in Attachment 4. Reference Attachment 1 for the Garfield County Assessors Map depicting affected surface owners. (5) Need for Proposed Action: a statement of the reason for the pipeline. The purpose of the 20 -inch line is to loop the existing 8 -inch and 12 -inch gas lines. EnCana's drilling activity is expected to increase in this area over the next two to three years and 3`d party companies want to take advantage of EnCana's existing infrastructure and deliver gas into our system. This activity will result in greater gas volumes (an additional 35 to 60 mmscfd rate) in the vicinity of this pipeline. The current 8 -inch and 12 -inch pipelines are too small for the projected volumes and would create greater pressures (approximately 290 psig) in the area. This increased gathering system pressure would adversely effect well performance and potentially cause mature wells to be shut-in. (6) Regulatory Permit Requirements: a table indicating the permit agency name, permit/action driving task and the task to be performed to obtain the permit. Required Permits—Pipelines Agency Permit or Consultation Applicability Federal Department of Defense Sacramento District Corps of Engineers — Grand Junction, Colorado Nationwide General Permit (NWP) 12 Construction within waters of the United States. State of Colorado Department of Public Health and Environment Water Quality Control Division Construction Stormwater Permit Discharge of stormwater from a construction site. 2 DEVELOPMENT PLAN APPLICATION 03/01/2008 TOMBSTONE PHASE 3 PIPELINE Required Permits—Pipelines Agency Permit or Consultation Applicability Local -Colorado Garfield County Dewey Neely Development Plan Installation of pipelines (970) 285-2632 office (970) 250-9462 cell Utility Installation Permit Crossing of County roads and Right -of -Ways Copies of the NWP 12 Pre -Construction Notification and the Garfield County Utility Installation Permit are provided in Attachment 2. EnCana has an existing Colorado Department of Public Health and Environment (CDPHE) Stormwater Permit and a copy is provided in Attachment 3. (7) Primary Project Participants: Include the names, address, and phone numbers of the company representative, company and individual acting as an agent for the company, construction company contacts, federal and state agency contacts. Project Participants Name Title Address Telephone/Cell EnCana Dewey Neely Construction Coordinator (general contact in case of an emergency for this project) 2717 CR 215, Suite 100, Parachute, CO 81635 (970) 285-2632 office (970) 250-9462 cell Renata Busch Permit and ROW Coordinator 2717 CR 215, Suite 100, Parachute, CO 81635 (970) 285-2825 office (970) 319-8890 cell Bob Anderson Pipeline Inspector 2717 CR 215, Suite 100, Parachute, CO 81635 (970) 285-2622 office (303) 880-0038 cell Agency Contacts Army Corps of Engineers – Colorado/Gunnison Basin Regulatory Office Susan Nall Environmental Engineer 402 Rood Ave, Room 142 Grand Jct., CO 81501 (970) 243-1199 office CDPHE WCQD - Stormwater Nathan Moore Environmental Engineer 4300 Cherry Creek South, Denver, CO 80202 (303) 692-3555 office Garfield County Planning Department Fred Jarman Director 108 8a Street, Suite 401 Glenwood Springs, CO 81601 (970) 945-8212 office (8) Project Facilities: Identify any permanent project facilities such as permanent right-of-ways, widths, meter stations, valve sets, etc. DEVELOPMENT PLAN APPLICATION 03/01/2008 3 TOMBSTONE PHASE 3 PIPELINE The 20 -inch line will parallel EnCana's existing gas lines and waterlines. No new disturbance will occur outside the existing, disturbed area. The proposed East Dry Hollow Loop natural gas pipeline would be installed maintaining a 15 foot off -set from edge of existing pipelines. The construction right-of-way width will be 75 feet. Construction of the proposed pipeline will disturb approximately 29.66 acres. No new disturbance will occur outside the existing, disturbed area. (9) Construction Schedule: indicate the estimated start and end dates for construction, days of the week in which construction will occur, hours of day during which construction will occur. Construction activities will begin after project approval by the Garfield County Planning Department. Construction activities are anticipated to last 8 to 10 weeks. Construction activities are tentatively scheduled for May 2008 and will continue through July 2008. Working hours will normally range from sunrise to sunset Monday through Saturday. (10) Sensitive Area Survey: List the types and areas of concern along the pipeline right-of-way, such as: sensitive plant populations, cultural, archeological, paleontological resources and wetlands identified during pre -construction environmental surveys, if applicable. WestWater Engineering, Inc. (WestWater) has completed the biological assessments of the East Dry Hollow Loop Phase 1 pipeline. The project route was surveyed for sensitive resources during the winter of 2008. The Sensitive Resource Reports for the project are provided in Attachment 5. Biological surveys were completed on February 6 and 12, 2008 and March 11, 2008. The following wildlife impact assessments were identified: • possible loss of winter range to a small number of mule deer and elk that utilize the site. • possible loss of foraging and nesting vegetation/habitat to a small number of bird species. • possible disturbance to raptor nests along Mamm Creek a short distance north of the pipeline. Also completed were surveys for federally listed threatened and endangered plants and BLM sensitive species plants along the project right-of-way. No sensitive plant species were observed along the right-of-way. No wetlands were identified during construction of EnCana's existing pipelines along the projected corridor. The pipeline project will be constructed within an existing disturbance and will not impact any known wetlands. (11) Land Grant/Permits/Authorizations and Stipulations: attach a copy of any land grants, permits, and authorizations including stipulations. The Garfield County Utility Installation Permit is provided in Attachment 2. A copy of the Stormwater Discharge Permit is provided in Attachment 3. (12) Revegetation Plan: 4 DEVELOPMENT PLAN APPLICATION 03/01/2008 TOMBSTONE PHASE 3 PIPELINE a. A plant material list. Be specific, scientific and common names are required. Include application rate in terms of pure live seed (PLS) per acre/. b. A planting schedule that includes timing, methods, and mulching. c. A revegetation security. A security may be required if, in the determination of the County Vegetation Management, the proposed project has: (i) A potential to facilitate the spread of noxious weeds. (ii) A potential to impact watershed areas. (iii) A potential for visual impacts from public viewing corridors. (iv) Steep slopes (15% or greater) or unstable areas. (v) Disturbs large areas (Half an acre or greater) d. The revegetation security will be in an amount to be determined by the County Vegetation Management that will be site-specific and based on the amount of disturbance. The security shall be held by Garfield County until vegetation has been successfully reestablished, or for a period of time approved by the County Vegetation Management in any specific land use action, according to the Reclamation & Revegetation Standards Section in the Garfield County Weed Management Plan. The County Vegetation Management will evaluate the reclamation and revegetation prior to the release of the security. Based on the soil types, terrain, and the presence of noxious weeds in the pipeline ROW, successful reclamation is most likely if a seed mix of grasses is used. Two seed mixes are recommended for the East Dry Hollow Loop Phase 1 project based on the soil type and available moisture; one for the drier juniper/sagebrush sites and one for the meadow/riparian sites with more moisture. Recommended Seed Mix For Arid Sites - East Dry Hollow Loop Phase 1 Pipeline Common Name Variety Application Rate lbs PLS/acre Plant the Following (10% Total) Indian Ricegrass Nezpar, Paloma, Rimrock 1.9 And Both of the Following (15% each, 30% Total) Galleta Viva 2.5 Bluebunch Wheatgrass Secar 2.8 And One of the Following (20% Total) Thickspike Wheatgrass Critana 3.4 Slender wheatgrass San Luis 3.3 And Two of the Following (40% Total) Muttongrass 0.6 Sandberg Bluegrass 0.6 Bottlebrush Squirreltail 2.7 Total 17.8 lbs PLS/acre Recommended Seed Mix For Meadow and Riparian Sites — East Dry Hollow Loop Phase 1 Pipeline DEVELOPMENT PLAN APPLICATION 03/01/2008 5 TOMBSTONE PHASE 3 PIPELINE Common Name Variety Application Rate lbs PLS/acre And Both of the Following (20 /0 each, 40% Total) Mountain Brome Garnet 5.8 Slender Wheatgrass San Luis 3.3 And One of the Following (20% each, 60% Total) Letterman Neeldegrass 3.5 Blue Wildrye Arlington 4.8 Thickspike Wheatgrass Critana 3.4 Idaho Fescue Joseph 1.2 Wheeler Bluegrass 0.6 Total 22.6 lbs PLS/acre For best results and success, the recommended grass mixture reseeding should be done in late autumn. The reseeding rate should be doubled for broadcast application. Preferred seeding method is multiple seed bin rangeland drill with no soil preparation other than simple grading to slope and imprinting and waterbars where applicable. Alternative seeding methods include but are not limited to: • harrow with just enough soil moisture to create a rough surface, broadcast seed and re- harrow, preferably at a 90 degree angle to the first harrow; • hydro -seeding (most economical in terms of seed cost); and • hand raking and broadcast followed by re -raking at a 90 degree angle to the first raking. These are not the only means of replanting the site. However, these methods have been observed to be effective in similar landscapes. EnCana will provide a Revegetation Security to Garfield County for the amount of $74,150 or $2,500 per acre of disturbance for the East Dry Hollow Loop Phase 1 Pipeline. The security deposit certificate is provided in Attachment 8. (13) A weed management plan for all Garfield County listed noxious weeds and State of Colorado listed noxious weeds that are targeted by the Commissioner of Agriculture for statewide eradication. Field inspections of the proposed gathering system links and site were conducted by WestWater biologists on February 6 and 12, and March 11, 2008. Most weeds observed during the February survey were found in the drainages, riparian areas, and disturbed areas within the power line of the ROW. Noxious weeds observed included houndstongue, chicory, bull thistle, Russian knapweed, downy brome, and tamarisk. The Integrated Vegetation and Noxious Weed Management Plan are provided in Attachment 5. (14) Emergency Response Plan: include a fire protection and hazardous material spills plan, which specifies planned actions for possible emergency events, a listing of persons to be notified of all emergency events, a listing of person to be notified of an emergency event, proposed signage, and provisions for access by emergency response teams. The emergency plan must be acceptable to the appropriate fire 6 DEVELOPMENT PLAN APPLICATION 03/01/2008 TOMBSTONE Pi1ASR 3 PIPELINE district or the County Sheriff, as appropriate. The plan shall include a provision for the operator to reimburse the appropriate emergency service provider for costs incurred in connection with emergency response for the operator's activities at the site. The EnCana Emergency Response Plan is provided in Attachment 6. In case of an emergency during this operation, the general contact person would be Dewey Neely, EnCana Group Lead and his contact numbers can be found in Section 2.6 under Project Participants. The following table contains contact information for Emergency Services: Emergency Contact List Outside Agencies Service Name Address Phone Emergency 911 Air Evacuation St. Mary's Care Flight Grand Junction, CO (800) 332-4923 Ambulance & Fire Parachute Fire Dept. Parachute, CO (970) 285-7711 Rifle Fire Dept. Rifle, CO (970) 625 - Hospitals Glenwood Springs Valley View Hospital 1906 Blake Avenue Glenwood Springs, CO (970) 945-6535 Grand Junction St. Mary's Hospital & Medical Center 2635 N. 7th Street Grand Junction, CO (970) 244-2273 Rifle Grand River Hospital District 501 Airport Road Rifle, CO (970) 625-1510 Medical Clinics Battlement Mesa Battlement Mesa Clinic 73 Sipprelle, Suite K Parachute, CO (970) 285-7046 Rifle Grand River Medical Center 501 Airport Road Rifle, CO (970) 625-1510 Poison Control (800) 332-3073 Police Rifle Police Dept. 202 Railroad Ave. Rifle, CO (970) 625-8095 Sheriff Garfield County Sheriff 107 8th Street Glenwood Springs, CO (970) 945-0453 State Patrol State of Colorado 202 Centennial Drive Glenwood Springs, CO (970) 945-6198 State Patrol (Dispatch) (970) 625-8095 EnCana would reimburse the appropriate emergency service provider for costs incurred in connection with emergency response for activities associated with this project. The Spill Plan serves as a guide to assist personnel in the proper response to an emergency incident and identifies emergency notification and state agency names and phone numbers that shall be contacted in the event of a spill. The successful handling of any oil discharge depends on four different operations: 1) Containment, 2) Removal, 3) Disposal, and 4) Cleanup which are summarized in the Spill Plan provided in Attachment 7. The Stormwater Management Plan provided in Attachment 3 also provides information with regards to spill prevention. DEVELOPb1ENT PLAN APPLICATION 03/01/2008 7 TOMBSTONE PHASE 3 PIPELINE (15) Traffic Impact: for construction traffic on county roads, indicate the anticipated types of vehicles, number of each type, anticipated number of trips per day per each type, county roads to be used, percentage of the construction traffic that will travel on each listed county. Mamm Creek Road will be used to access the project. Construction traffic will consist of approximately 20 pickup trucks and 2 crew trucks including EnCana personnel, plus 2 haul trucks to get the equipment on location. Construction of the pipeline could result in estimated pickup traffic of approximately 22 commuter round trips per day. Impacts will be temporary and will cease when construction of the pipeline is complete (16) Staging Areas: indicate the general location of the staging areas required for pipeline construction. There are no construction staging areas or yards associated with this project. (17) Hydrotest Water: indicate the quantity of water required, source of water and the disposition of the water after testing. The natural gas pipeline would be strength tested to prove its integrity and substantiate the MAOP Head gas will be used to perform strength and leak tests. II. Referral and Review by the Planning Director: The Planning Director will coordinate the review of the development plan application. Upon the filing of a complete application for development plan review, the Planning Director shall promptly forward one copy to the County Road & Bridge, Oil & Gas Auditor, Vegetation Management and Engineering Departments; the appropriate fire district or County Sheriff; the surface owners of an individual pipeline development plan; and any adjacent municipality for comment. (1) Referral comments on the proposed development shall be returned to the Planning Director no later than 18 days from the date of application for an individual site application and 30 days from the date of application for an area development plan. (2) In addition, the applicant shall notify the property owners within 200 feet of the route that are not affected surface owners with an agreement with the applicant. A sign will be posted on the portions of the route crossing or adjacent to a public road within seven days after receiving the application for an individual development plan review. Both the notice and the sign shall indicate that a development plan review application has been made, and the phone number of the Planning Department where information regarding the application may be obtained. The applicant shall notify all property owners within 200 feet of the outside boundary of an area development plan and post a sign at the intersection of each 8 DEVELOPMENT PLAN APPLICATION 03/01/2008 (3) TOMBSTONE PI IASL 3 PIPELINE public road entering the area within seven days after receiving the application for an area development plan review. Both the notice and the sign shall indicate that a development plan review application has been made, and the phone number of the Planning Department where information regarding the application may be obtained. Any determination by the Planning Director to approve or conditionally approve a development plan application must be in writing and mailed or otherwise provided to the applicant no later than 28 days for an individual pipeline development plan or 60 days for an area pipeline development plan, after the date on which the development plan application is filed. Failure to make a determination on the application within this time period shall result in the application being considered approved and the applicant's building permit or access, or other permits being processed. III. Development Plan Review Standards and Criteria for Approval: A development plan shall be approved or conditionally approved in accordance with the following standards and criteria. (1) Right-of-way and any associated facilities shall be located along the perimeters of surface property ownerships and not within areas of agricultural crop production as a general guide. Non -perimeter locations will be acceptable if the surface owner agrees and there is no adverse impact on adjacent properties. (2) Any equipment used in construction or operation of a pipeline must comply with the Colorado Oil and Gas Conservation Commission Rules and Regulations, Section 802, Noise Abatement. a. For any pipeline construction or operational facility that will have a substantial impact in adjacent areas, additional noise mitigation may be required. One or more of the following additional noise mitigation measures may be required: (i) acoustically insulated housing or covers enclosing any motors or engines (ii) screening of the site or noise emitting equipment by fence or landscaping (iii) noise management plan specifying the hours of maximum noise and the type, frequency, and the level of noise to be emitted; and (iv) any other noise mitigation measures required by the COGCC. b. All power sources used in pipeline operations shall have electric motors or muffled internal combustion engines. (3) Pipeline operations shall be located in a manner to minimize their visual impact and disturbance of the land surface, to the extent practical. a. The location of right-of-way shall be away from prominent natural features and identified environmental resources. b. Right-of-way shall be located to avoid crossing hills and ridges, and wherever possible, shall be located at the base of slopes. c. Facilities shall be painted in a uniform, non -contrasting, non -reflective color, to blend with the adjacent landscape. DEVELOPMENT PLAN APPLICATION 9 03/01/2008 TOMBSTONE PHASE 3 PIPELINE (4) Access points to public roads shall be reviewed by the County Road & Bridge Department and shall be built and maintained in accordance with the Garfield County Road Specifications. All access and oversize or overweight vehicle permits must be obtained from the County Road & Bridge Department prior to beginning operation. All proposed transportation right-of-way to the site shall also be reviewed and approved by the County Road & Bridge Department to minimize traffic hazards and adverse impacts on public roadways. Existing roads shall be used to minimize land disturbance unless traffic safety, visual or noise concerns, or other adverse surface impacts clearly dictate otherwise. Any new roads created as a result of the pipeline construction, intended to be permanent for maintenance and repair operations shall be placed behind a locked gate or other barriers preventing use by recreational vehicles. Any gates or barriers need to be consistent with the surface owners' preferences. (5) In no case shall an operator engage in activities which threaten an endangered species. (6) Air contaminant emissions shall be in compliance with the applicable permit and control provisions of the Colorado Air Quality Control Program, Title 25, Resolution 7, C.R.S. (7) All operations shall comply with all applicable State Public Health and Environment, Water Quality Control standards. (8) Any proposed waste disposal or treatment facilities shall comply with all requirements of the County Individual Septic Disposal System Regulations. (9) The proposed reclamation plan shall provide for a reasonable reclamation schedule in light of the specific surface use and surrounding land uses, and may require recontouring and revegetation of the surface to pre -disturbance conditions. The Planning Director may also approve a plan for an alternative post - disturbance reclamation, provided the surface owner and the applicant agree, and the plan is in harmony with the surrounding land uses and the Comprehensive Plan. (10) Should an abandoned pipeline be removed, it will be subject to the original revegetation and weed management requirements in the original application. IV. Conditions of Approval: (1) If the Planning Director finds in reviewing a development plan application that the application meets the applicable standards set forth above, the Planning Director shall approve the site plan, and the applicant may continue the processing of the building or other associated County permit applications, or otherwise engage in the construction of the proposed pipeline. (2) If the Planning Director finds that the application does not meet an applicable standard or standards, the application shall be approved with appropriate reasonable conditions imposed to avoid or minimize the significant adverse 10 DEVELOPMENT PLAN APPLICATION 03/01/2008 (3) TOMBSTONE MIME 3 PIPELINE impacts of the development. Such conditions may include, but are not necessarily limited to, the relocation or modification of proposed access roads, facilities, or structures; landscaping, buffering, or screening; posting of adequate financial guarantees; compliance with specified surface reclamation measures; or any other measures necessary to mitigate any significant impact on surrounding properties and public infrastructure. Once the Planning Director issues a determination on the development plan, the determination shall not be final, and no permit based upon the determination shall be issued, for 14 calendar days after the date of the determination, in order to allow time for the applicant to appeal, or for the Board of County Commissioners to call up the determination for further review, pursuant to Sections 9-502 and 9- 503 of this Resolution. The Planning Director's determination shall become final, and permits applied for in accordance with the determination may be issued, only after the expiration of this 14 -day period, and only if the determination is not reviewed and acted upon by the Board of County Commissioners at a subsequent appeal or call-up hearing. I have read the statements above and have provided the required attached information which is correct and accurate to the best of my knowledge. (Signature 1cl pplicant/owner) Last Revised: 02/2006 Renata Busch DEVELOPMENT PLAN APPLICATION 11 03/01/2008 GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT FEE SCHEDULE Garfield County, pursuant to Board of County Commissioners ("Board") Resolution No. 98-09, has established a fee structure ("Base Fee") for the processing of each type of subdivision and land use applications. The Base Fee is an estimate of the average number of hours of staff time devoted to an application, multiplied by an hourly rate for the personnel involved. The Board recognized that the subdivision and land use application processing time will vary and that an applicant should pay for the total cost of the review which may require additional billing. Hourly rates based on the hourly salary, and fringe benefits costs of the respective positions combined with an hourly overhead cost for the office will be used to establish the actual cost of County staff time devoted to the review of a particular project. Actual staff time spent will be charged against the Base Fee. After the Base Fee has been expended, the applicant will be billed based on actual staff hours accrued. Any billing shall be paid in full prior to final consideration of any land use permit, zoning amendment or subdivision plan. If an applicant has previously failed to pay application fees as required, no new or additional applications will be accepted for processing until the outstanding fees are paid. Checks, including the appropriate Base Fee set forth below, must be submitted with each land use application, and made payable to the Garfield County Treasurer. Applications will not be accepted. without the required application fee. Base Fees are non-refundable in full, unless a written request for withdraw from the applicant is submitted prior the initial review of the application materials. Applications must include an Agreement for Payment Form ("Agreement") set forth below. The Agreement establishes the applicant as being responsible for payment of all costs associated with processing the application. The Agreement must be signed by the party responsible for payment and submitted with the application in order for it to be accepted. The complete fee schedule for subdivision and land use applications is attached GARFIED COUNTY BUILDING AND PLANNING DEPARTMENT BASE FEES The following Base Fees shall be received by the County at the time of submittal of any procedural application to which such fees relate. Such Base Fees shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board for the consideration of any application or additional County staff time or expense not covered by the Base Fee, which have not otherwise been paid by the applicant to the County prior to final action upon the application tendered to the County. TYPE OF PROCEDURE Vacating Public Roams & Rights -of -Way Sketch Plan Preliminary Plan Final Plat Amended Plat Exemption from the Definition of Subdivision (SB -35) Land Use Permits (Special Use/Conditional Use Permits) • Administrative/no public hearing • Board Public Hearing only • Planning Commission and Board review & hearing Zoning Amendments • Zone District map amendment • Zone District text amendment • Zone District map & text amendment • PUD Zone District & Text Amendment • PUD Zone District Text Amendment Board of Adjustment • Variance • Interpretation Planning Staff Hourly Rate • Planning Director • Senior Planner • Planning Technician • Secretary County Surveyor Review Fee (includes review of Amended Plats, Final .Plats, Exemption Plats) Mylar Recording Fee Page 2 BASE FEE $400 $325 $675 + application agency review fees and outside consultant review fees, as authorized pursuant to the Regulations, such as the Colorado Geologic Survey $200 $100 $300 $250 $400 $525 $450 $300 $500 $500 $500 $250 $250 $50.50 $40.50 $33.75 $30 Determined by Surveyor$ $11-15'page $10 each additional page The following guidelines shall be used for the administration of the fee structure set forth above: 1. All applications shall be submitted with a signed Agreement for Payment form set forth below. 2. County staff shall keep accurate record of actual time required for the processing of each land use application, zoning amendment, or subdivision application. Any additional billing will occur commensurate with the additional costs incurred by the County as a result of having to take more time that that covered by the base fee. 3. Any billings shall be paid prior to final consideration of any land use permit, zoning amendment, or subdivision plan. All additional costs shall be paid to the execution of the written resolution confirming action on the application. 4. Final Plats, Amended or Corrected Plats, Exemption Plats or Permits will not be recorded or issued until all fees have been paid. 5. In the event that the Board determines that special expertise is needed to assist them in the review of a land use permit, zoning amendment, or subdivision application, such costs will be borne by the applicant and paid prior to the final consideration of the application. All additional costs shall be paid prior to the execution of the written resolution confirming action on the application. 6. If an application involves multiple reviews, the Applicant shall be charged the highest Base Fee listed above. 7. Types of "Procedures" not Listed in the above chart will be charged at an hourly rate based on the pertinent planning staff rate listed above. 8. The Planning Director shall establish appropriate guidelines for the collection of Additional Billings as required. 9. This fee structure shall be revised annually as part of the County budget hearing process. Page 3 GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT AGREEMENT FOR PAYMENT FORM (Shall be submitted with application) GARFIELD COUNTY (hereinafter COUNTY) and C n. (, Gc,i2 A �/ l f C7� 1 i(4.1#),_ -61c (hereinafter APPLICANT) agree as follows: 1. APPLICANT has submitted to COUNTY an application for Pi e /JeUc,/rpt eA 17 (hereinafter, THE PROJECT). 2. APPLICANT understands and agrees that Garfield County Resolution No. 98-09, as amended, establishes a fee schedule for each type of subdivision or lana use review applications, and the guidelines for the administration of the fee structure. 3. APPLICANT and COUNTY agree that because of the size, nature or scope of the proposed project, it is not possible at this time to ascertain the full extent of the costs involved in processing the application. APPLICANT agrees to make payment of the Base Fee, established for the PROJECT, and to thereafter permit additional costs to be billed to APPLICANT. APPLICANT agrees to make additional payments upon notificationby the COUNTY when they are necessary as costs are incurred. 4. The Base Fee shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board of County Commissioners for the consideration of an application or additional COUNTY staff time or expense not covered by the Base Fee. If actual recorded costs exceed the initial Base Fee, APPLICANT shall pay additional billings to COUNTY to reimburse the COUNTY for the processing of the PROJECT mentioned above. APPLICANT acknowledges that all billing shall be paid prior to the final consideration by the COUNTY of any land use permit, zoning amendment, or subdivision plan. APPLICANT Signature Date: 3-�/—o( enr.� Print Name Mailing Address: 02'7` % 04 VS P6_cl.r , fa'1 10/2004 Page 4 EAST DRY HOLLOW LOOP PHASE 1 Pipeline Garfield County Development Plan Application Narrative March 2008 Applicant: EnCana Oil & Gas (USA) Inc. 2717 County Road 215, Suite 100 Parachute, Colorado 81635 TABLE OF CONTENTS Table of Contents 1 1.0 Introduction 1 1.1 Project Description 1 1.2 Purpose and Need 1 1.3 Location 1 1.4 Facilities 1 1.4.1 Project Design 1 1.5 Land Requirements 2 1.5.1 Right -of -Way 2 1.5.2 Corridor 2 1.5.3 Disturbance 2 1.5.4 Contractor/Pipe Storage/Offloading Yards 2 1.5.5 Above -ground Appurtenances 2 2.0 Development Plan Requirements 2 2.1 Attachments 2 2.1.1 Attachments 2 2.2 Construction Schedule 3 2.3 Construction Methods 3 2.3.1 Plan of Development 3 2.3.2 Construction Sequence 3 2.3.2.1 Engineering Surveys 3 2.3.2.2 Clearing, Grading, and Topsoiling 3 2.3.2.3 Trenching 3 2.3.2.4 Pipe Installation 4 2.3.2.5 Backfilling 5 2.3.2.6 Cleanup 5 2.3.3 Road Crossings/Installation 5 2.3.4 Drainage and Stream Crossings/Installation 5 2.4 Required Permits 5 2.5 Ownership and fee -landowner documentation 6 2.5.1 Ownership and Notifications. 6 2.5.2 Buildings 6 2.6 Project Participants 6 2.7 Sensitive Area Surveys 7 2.7.1 Biological 7 2.7.2 Wetlands 8 2.8 Revegetation 8 2.9 Weed Management Plan 9 2.10 Emergency Response and Spill Prevention 10 2.11 Traffic Impact 11 2.12 Staging Areas/Construction Yards 11 2.13 pipe tests 11 3.0 Post -Construction Activities 11 3.1 Maintenance and Operation 11 4.0 Mitigation Measures 12 4.1 Noxious Weeds 12 4.2 Erosion and Stormwater 12 4.3 Threatened, Endangered, and Sensitive species 13 4.4 Cultural Resources 13 4.5 Air Quality 13 4.6 Solid Waste Management 13 4.7 Hazardous Materials Management 13 1.0 INTRODUCTION 1.1 PROJECT DESCRIPTION EnCana Oil & Gas (USA) Inc. (EnCana) is proposing the installation of a new 20 -inch diameter buried steel, low pressure gathering pipeline in the Mamm Creek field. This East Dry Hollow Loop Phase 1 pipeline (project) involves construction, operation, and maintenance of a new trunk pipeline. The 20 -inch pipeline will gather and transport natural gas from existing and new wells in the eastern portion of the Mamm Creek field. The 20 -inch pipeline will be approximately 17,222 feet (-3.27 miles) in length. The pipeline will start at EnCana's P4E pad (S1/2 SE1/4 Section 4, Township 7 South, Range 92 West) and end at the inlet of Hunter Mesa Compressor Station (SE1/4 Section 1, Township 7 South, Range 92 West). The pipeline and related above -ground facilities will be located in Garfield County, Colorado. Project maps are included in Attachment 1. 1.2 PURPOSE AND NEED The purpose of the 20 -inch line is to loop the existing 8 -inch and 12 -inch gas lines. EnCana's drilling activity is expected to increase in this area over the next two to three years and 3`d party companies want to take advantage of EnCana's existing infrastructure and deliver gas into our system. This activity will result in greater gas volumes (an additional 35 to 60 mmscfd rate) in the vicinity of this pipeline. The current 8 -inch and 12 -inch pipelines are too small for the projected volumes and would create greater pressures (approximately 290 psig) in the area. This increased gathering system pressure would adversely effect well performance and potentially cause mature wells to be shut-in. 1.3 LOCATION The pipeline will start just south of EnCana's P4E pad (S1/2 SE1/4 Section 4, Township 7 South, Range 92 West) and end at the inlet of Hunter Mesa Compressor Station (SE1/4 Section 1, Township 7 South, Range 93 West) in the Mamm Creek area located in Garfield County, Colorado. 1.4 FACILITIES 1.4.1 Project Design The proposed project is approximately 3.27 miles in length of up to 20 -inch diameter steel pipe. The 20 -inch pipeline is designed to a Maximum Allowable Operating Pressure (MAOP) of 435 psig (30% of SMYS) ANSI B31.8 with a Location 2 (0.6) safety design factor. The pipeline will be constructed using X-52 grade pipe, 0.281 inch wall thickness, and ANSI 300 rated flanges. The system will be pressure protected with a Pressure Safety Valve (PSV) to prevent over- pressuring. The pipeline will require above -ground appurtenances (block valves, pig launchers and receivers) at both ends of the pipeline. Additional above ground appurtenances will be required to connect existing gathering lines to the new 20 -inch loop line. A PSV will be installed at the Hunter Mesa Compressor Station. The pipeline will be buried at least 48 inches in depth. EnCana will design and constrict the pipeline and related facilities in conformance with the requirements of Title 49 CFR, Part 192, "Regulations for the Transportation of Natural Gas and Other Gas by Pipeline: Minimum Federal Safety Standard". 1.5 LAND REQUIREMENTS 1.5.1 Right -of -Way The 20 -inch line will parallel EnCana's existing gas lines and waterlines. No new disturbance will occur outside the existing, disturbed area. The proposed East Dry Hollow Loop natural gas pipeline would be installed maintaining a 15 foot off -set from edge of existing pipelines. The construction right-of-way width will be 75 feet. Construction of the proposed pipeline will disturb approximately 29.66 acres. No new disturbance will occur outside the existing, disturbed area. 1.5.2 Corridor The proposed route will be located within an existing pipeline corridor and the pipeline will parallel these existing pipelines and will be installed within an existing pipeline right-of-way. 1.5.3 Disturbance The projected pipeline route will disturb approximately 29.66 acres in Garfield County. EnCana has selected a route which will parallel an existing pipeline corridor, of which acreage has been previously disturbed from construction activities. 1.5.4 Contractor/Pipe Storage/Offloading Yards EnCana's contractors will haul the pipe used for the project from a pipe wholesale distributor located in Garfield County and no pipe yards will be necessary for the construction of the project. 1.5.5 Above -ground Appurtenances After completion of reclamation activities, above -ground pipeline markers will be installed over the center of the pipeline. 2.0 DEVELOPMENT PLAN REQUIREMENTS 2.1 ATTACHMENTS 2.1.1 Attachments This Development Plan includes the following attachments: Attachment 1 — Project Maps Attachment 2 — Permits Attachment 3 — Stormwater Attachment 4 — Landowner Information 7 Attachment 5 Attachment 6 Attachment 7 Attachment 8 — — Wildlife and Weeds — Emergency Response Plan — Spill Plan Revegetation Security 2.2 CONSTRUCTION SCHEDULE Construction activities will begin after project approval by the Garfield County Planning Department. Construction activities are anticipated to last 8 to 10 weeks. Construction activities are tentatively scheduled for May 2008 and will continue through July 2008. Working hours will normally range from sunrise to sunset Monday through Saturday. 2.3 CONSTRUCTION METHODS 2.3.1 Plan of Development EnCana has developed a Plan of Development, which describes construction methods and measures to be taken by EnCana during construction, operation, and maintenance of the project. The Plan of Development is provided to project personnel, to establish guidelines for construction and operation of the project and to address mitigation. 2.3.2 Construction Sequence The following section provides a description of each phase of standard construction during the project. The following operations are typical during a construction project. 2.3.2.1 Engineering Surveys The construction right-of-way will be marked prior to construction with laths and/or flagging. Laths/flagging will be maintained throughout construction and will not be removed until after reclamation activities have been completed. 2.3.2.2 Clearing, Grading, and Topsoiling Clearing, topsoiling, and grading will be limited to the minimum area required for safe and efficient construction. Available topsoil, up to a depth of six inches, will be segregated from the trenchline only. Where grading is required, topsoil will be stripped from the entire portion of the right-of-way. Topsoil will be removed and stockpiled, and the right-of-way will be graded only to the extent necessary to create safe and efficient pipeline installation conditions. 2.3.2.3 Trenching The ditch will be excavated and sloped in accordance with OSHA specifications. The cover from top of pipe to ground level will be a minimum of 48 inches. Where rock is encountered, tractor - mounted mechanical rippers or rock trenching equipment may be used to facilitate excavation. The bottom of the trench line will remain free of rocks and debris to allow for a solid surface to install the pipe. The trench will be excavated and subsoil material stockpiled at the edge of the workspace. Based on field conditions, gaps will be made in subsoil stockpiles to avoid ponding or excessive diversion of natural runoff during storm events. 2.3.2.4 Pipe Installation Pipe installation will include stringing, bending for horizontal or vertical angles in the alignment, welding the pipe segments together, coating the joint areas to prevent corrosion, and then lowering -in and padding as described in greater detail below. Stringing Pipe will be hauled by truck to the pipeline right-of-way. Each joint of pipe will be unloaded and placed parallel to the ditch. Each section of pipe will be stacked on timber skids to stabilize the pipe until welding is completed. Bending After the joints of pipe are strung along the ditch, individual joints of pipe will be bent to accommodate horizontal and vertical changes in direction. Field bends will be made utilizing a hydraulically operated bending machine. Where the deflection of a bend exceeds the allowable limits for a field -bent pipe, factory (induction) bends will be installed. Welding After the pipe joints are bent, the pipe will be lined up end-to-end and clamped into position. The two joints of pipe will be evenly spaced within the clamps to ensure that the pipes are properly aligned, before welding begins. The pipe is then welded in conformance with 49 CFR Part 192, Subpart E. "Welding of Steel Pipelines" and API 1104, "Standard for Welding Pipelines and Related Facilities". Welding Inspection Welds will be visually inspected by a qualified inspector. Any defects will be repaired or cut out as required under the specified regulations and standards. Coating To prevent corrosion, the pipe will be externally coated with fusion bonded epoxy coating prior to delivery. After welding, field joints will be coated with fusion bond epoxy coating, tape and primer, or shrink sleeves. Before the pipe is lowered into the ditch, the pipeline coating will be visually inspected and tested with an electronic detector, and any faults or scratches will be repaired. Lowering -in and Padding Once the pipe coating operation has been completed, a section of the pipe will be lowered into the ditch. Padding or placement of sand bags along the bottom of the trench line may occur before the pipe section is lowered -in, depending on the bottom surface of the trench. Side -boom tractors will be used to simultaneously lift the pipe, position it over the ditch, and lower it in place. Inspection will be conducted to verify that minimum cover is provided; the trench bottom is free of rocks, debris, etc.; external pipe coating is not damaged; and the pipe is properly fitted and installed into the ditch. Specialized padding machines will be used to sift soil fines from the 4 excavated subsoil to provide rock -free pipeline padding and bedding. In rocky areas, padding material or a rock shield will be used to protect the pipe. Topsoil will not be used to pad the pipe. 2.3.2.5 Backfilling Backfilling will begin after a section of the pipe has been successfully placed in the ditch and final inspection has been completed. Backfilling will be conducted using a bulldozer, rotary auger backfill, padding machine or other suitable equipment. Backfilling the trench will use the subsoil previously excavated from the trench. Backfill will be graded and compacted, where necessary, for ground stability, by being tamped or walked in with a wheeled or track vehicle. Compaction will be performed to the extent that there are no voids in the trench. Any excavated materials or materials unfit for backfill will be utilized or properly disposed of in conformance with applicable laws or regulations. Topsoil will not be used to backfill the trench. 2.3.2.6 Cleanup Cleanup activities will be initiated as soon as practicable after backfilling activities have been completed. All construction -related debris will be removed and disposed of at an approved disposal area. The right-of-way will be graded as near as possible to the pre -construction contours and natural runoff and drainage patterns will be restored. The right-of-way will be left in a roughened condition to provide micro -climates for plant development and collection of stormwater runoff. 2.3.3 Road Crossings/Installation The proposed pipeline will bore County Road 315; nearest intersection being address 4745 County Road 315. The pipeline will be installed beneath the surface of the right-of-way at a minimum depth of 6 feet to ensure proper protection of the pipeline. A copy of the approved Garfield County Utility Installation Permit is included in Attachment 2. 2.3.4 Drainage and Stream Crossings/Installation The East Dry Hollow Loop Phase 1 pipeline project will cross (Mamm Creek) and several other ephemeral tributaries. The route extends across private land, and all United States Army Corps of Engineers (USACoE) jurisdictional water crossings are on property owned by the Couey family. The Mamm Creek crossing will be constructed by directional boring. 2.4 REQUIRED PERMITS The following table lists permits required to construct the project: Required Permits—Pipelines Agency Permit or Consultation Applicability Federal Department of Defense Sacramento District Corps of Engineers – Grand Junction, Colorado Required Permits—Pipelines Agency Permit or Consultation Applicability Nationwide General Permit (NWP) 12 Construction within waters of the United States. State of Colorado Department of Public Health and Environment Water Quality Control Division Construction Stormwater Permit Discharge of stormwater from a construction site. Local -Colorado Garfield County Development Plan Installation of pipelines Utility Installation Permit Crossing of County roads and Right -of -Ways Copies of the NWP 12 Pre -Construction Notification and the Garfield County Utility Installation Permit are provided in Attachment 2. EnCana has an existing Colorado Department of Public Health and Environment (CDPHE) Stormwater Permit and a copy is provided in Attachment 3. 2.5 OWNERSHIP AND FEE -LANDOWNER DOCUMENTATION 2.5.1 Ownership and Notifications. The pipeline crosses four landowners. All landowners within 200 feet of the project are affected surface owners. Please note that EnCana did not determine if the surface owners are party to the mineral lease and is instead providing copies of Right -of -Way Easements for each surface landowner. Return receipts providing notification to each landowner will be provided upon receipt. Landowner information is provided in Attachment 4. Reference Attachment 1 for the Garfield County Assessors Map depicting affected surface owners. 2.5.2 Buildings There is one house located within 350 feet of the proposed project. Reference the Garfield County Assessors Map provided in Attachment 1. 2.6 PROJECT PARTICIPANTS Project participants and contact information are provided in the following table. 6 Project Participants Name Title Address Telephone/Cell EnCana Dewey Neely Construction Coordinator (general contact in case of an etnergency for this project) 2717 CR 215, Suite 100, Parachute, CO 81635 (970) 285-2632 office (970) 250-9462 cell Renata Busch Permit and ROW Coordinator 2717 CR 215, Suite 100, Parachute, CO 81635 (970) 285-2825 office (970) 319-8890 cell Bob Anderson Pipeline Inspector 2717 CR 215, Suite 100, Parachute, CO 81635 (970) 285-2622 office (303) 880-0038 cell Agency Contacts Army Corps of Engineers — Colorado/Gunnison Basin Regulatory Office Susan Nall Environmental Engineer 402 Rood Ave, Room 142 Grand Jct., CO 81501 (970) 243-1199 office CDPHE WCQD - Stormwater Nathan Moore Environmental Engineer 4300 Cherry Creek South, Denver, CO 80202 (303) 692-3555 office Garfield County Planning Department Fred Jarman Director 108 8°i Street, Suite 401 Glenwood Springs, CO 81601 (970) 945-8212 office 2.7 SENSITIVE AREA SURVEYS 2.7.1 Biological WestWater Engineering, Inc. (WestWater) has completed the biological assessments of the East Dry Hollow Loop Phase 1 pipeline. The project route was surveyed for sensitive resources during the winter of 2008. The Sensitive Resource Reports for the project are provided in Attachment 5. Biological surveys were completed on February 6 and 12, 2008 and March 11, 2008. The following wildlife impact assessments were identified: • possible loss of winter range to a small number of mule deer and elk that utilize the site. • possible loss of foraging and nesting vegetation/habitat to a small number of bird species. • possible disturbance to raptor nests along Mamm Creek a short distance north of the pipeline. Also completed were surveys for federally listed threatened and endangered plants and BLM sensitive species plants along the project right-of-way. No sensitive plant species were observed along the right-of-way. 7 2.7.2 Wetlands No wetlands were identified during construction of EnCana's existing pipelines along the projected corridor. The pipeline project will be constructed within an existing disturbance and will not impact any known wetlands. 2.8 REVEGETATION Based on the soil types, terrain, and the presence of noxious weeds in the pipeline ROW, successful reclamation is most likely if a seed mix of grasses is used. Two seed mixes are recommended for the East Dry Hollow Loop Phase 1 project based on the soil type and available moisture; one for the drier juniper/sagebrush sites and one for the meadow/riparian sites with more moisture. Recommended Seed Mix For Arid Sites - East Dry Hollow Loop Phase 1 Pipeline Common Name Variety Application Rate lbs PLS/acre Plant the Following (10% Total) Indian Ricegrass Nezpar, Paloma, Rimrock 1.9 Slender Wheatgrass And Both of the Following (15% each, 30% Total) Galleta 3.3 Viva 2.5 Bluebunch Wheatgrass Secar 2.8 Blue Wildrye And One of the Following (20% Total) Thickspike Wheatgrass 4.8 Critana 3.4 Slender wheatgrass 3.4 San Luis 3.3 Joseph And Two of the Following (40% Total) Muttongrass 0.6 Sandberg Bluegrass 0.6 Bottlebrush Squirreltail 2.7 Total 17.8 lbs PLS/acre Recommended Seed Mix For Meadow and Ripar.an Sites — East Dry Hollow Loop Phase 1 Pipeline Common Name Variety Application Rate lbs PLS/acre And Both of the Following (20% each, 40% Total) Mountain Brome Garnet 5.8 Slender Wheatgrass San Luis 3.3 And One of the Following (20% each, 60% Total) Letterman Neeldegrass 3.5 Blue Wildrye Arlington 4.8 Thickspike Wheatgrass Critana 3.4 Idaho Fescue Joseph 1.2 S Wheeler Bluegrass 0.6 Total 22.6 lbs PLS/acre For best results and success, the recommended grass mixture reseeding should be done in late autumn. The reseeding rate should be doubled for broadcast application. Preferred seeding method is multiple seed bin rangeland drill with no soil preparation other than simple grading to slope and imprinting and waterbars where applicable. Alternative seeding methods include but are not limited to: • harrow with just enough soil moisture to create a rough surface, broadcast seed and re- harrow, preferably at a 90 degree angle to the first harrow; • hydro -seeding (most economical in terms of seed cost); and • hand raking and broadcast followed by re -raking at a 90 degree angle to the first raking. These are not the only means of replanting the site. However, these methods have been observed to be effective in similar landscapes. EnCana will provide a Revegetation Security to Garfield County for the amount of $74,150 or $2,500 per acre of disturbance for the East Dry Hollow Loop Phase 1 Pipeline. The security deposit certificate is provided in Attachment 8. 2.9 WEED MANAGEMENT PLAN Field inspections of the proposed gathering system links and site were conducted by WestWater biologists on February 6 and 12, and March 11, 2008. Most weeds observed during the February survey were found in the drainages, riparian areas, and disturbed areas within the power line of the ROW. Noxious weeds observed included houndstongue, chicory, bull thistle, Russian knapweed, downy brome, and tamarisk. The Integrated Vegetation and Noxious Weed Management Plan are provided in Attachment 5. Recommended Treatment It is important to know whether the target is annual, biennial, or perennial to select strategies that effectively control and hopefully eliminate the target. Herbicides should not necessarily always be the first treatment of choice when other methods can be effectively employed. Herbicide treatment with two or more herbicide modes of action in fall (after approximately August 15 when natural precipitation is present) is the best method to control difficult species such as Russian knapweed. The resilience and ability to quickly develop immunity to herbicides, particularly those used incorrectly, makes it imperative to use the proper chemicals at the correct time in the specified concentration. Most misuse seems centered around excessive use either in frequency or concentration. This results in mostly top kill and an immune phenotype. Best Management Practices The following practices should be adopted for any construction project to reduce the costs of noxious weed control. The practices include: • top soil, where present, should be segregated from deeper soils and replaced as top soil on the final grade, a process known as live topsoil handling; 9 • wetland vegetation if encountered, should be live handled like sod, temporarily watered if necessary, and placed over excavated sub -soil relative to the position from which the wetland sod was removed; • cut-off collars should be placed on all wetland and stream crossings to prevent back washing or draining of important aquatic resources; • in all cases temporary disturbance should be kept to an absolute minimum; • equipment and materials handling should be done on established sites such as the northern point of origin to reduce area and extent of soil compaction; • disturbances should be immediately replanted with the recommended mix in the re -vegetation section; • topsoil stockpiles should be seeded with non-invasive sterile hybrid grasses if stored longer than one growing season; • prior to delivery to the site, equipment should be cleaned of soils remaining from previous construction sites which may be contaminated with noxious weeds; and • if working in sites with weed -seed contaminated soil, equipment should be cleaned of potentially seed -bearing soils and vegetative debris prior to moving to uncontaminated terrain. on the East Dry Hollow Loop Phase 1 pipeline. The Weed Management Plan is provided in Attachment 5. 2.10 EMERGENCY RESPONSE AND SPILL PREVENTION The EnCana Emergency Response Plan is provided in Attachment 6. In case of an emergency during this operation, the general contact person would be Dewey Neely and his contact numbers can be found in Section 2.6 under Project Participants. The following table contains contact information for Emergency Services: Emergency Contact List Outside Agencies Service Name Address Phone Emergency 911 Air Evacuation St. Mary's Care Flight Grand Junction, CO (800) 332-4923 Ambulance & Fire Parachute Fire Dept. Parachute, CO (970) 285-7711 Rifle Fire Dept. Rifle, CO (970) 625 - Hospitals Glenwood Springs Valley View Hospital 1906 Blake Avenue Glenwood Springs, CO (970) 945-6535 Grand Junction St. Mary's Hospital & Medical Center 2635 N. 7th Street Grand Junction, CO (970) 244-2273 Rifle Grand River Hospital District 501 Airport Road Rifle, CO (970) 625-1510 Medical Clinics Battlement Mesa Battlement Mesa Clinic 73 Sipprelle, Suite K Parachute, CO (970) 285-7046 Rifle Grand River Medical Center 501 Airport Road Rifle, CO (970) 625-1510 Poison Control (800) 332-3073 Police Rifle Police Dept. 202 Railroad Ave. Rifle, CO (970) 625-8095 Sheriff Garfield County Sheriff 107 8th Street 10 EnCana would reimburse the appropriate emergency service provider for costs incurred in connection with emergency response for activities associated with this project. The Spill Plan serves as a guide to assist personnel in the proper response to an emergency incident and identifies emergency notification and state agency names and phone numbers that shall be contacted in the event of a spill. The successful handling of any oil discharge depends on four different operations: 1) Containment, 2) Removal, 3) Disposal, and 4) Cleanup which are summarized in the Spill Plan provided in Attachment 7. The Stormwater Management Plan provided in Attachment 3 also provides information with regards to spill prevention. 2.11 TRAFFIC IMPACT Mamm Creek Road will be used to access the project. Construction traffic will consist of approximately 20 pickup trucks and 2 crew trucks including EnCana personnel, plus 2 haul trucks to get the equipment on location. Construction of the pipeline could result in estimated pickup traffic of approximately 22 commuter round trips per day. Impacts will be temporary and will cease when construction of the pipeline is complete. 2.12 STAGING AREAS/CONSTRUCTION YARDS There are no construction staging areas or yards associated with this project. 2.13 PIPE TESTS The natural gas pipeline would be strength tested to prove its integrity and substantiate the MAOP. Head gas will be used to perform strength and leak tests. 3.0 POST -CONSTRUCTION ACTIVITIES 3.1 MAINTENANCE AND OPERATION EnCana will maintain the right-of-way for the life of the project. Maintenance will include repairing soil erosion and reseeding as necessary. The right-of-way will be considered satisfactorily reclaimed by the Garfield County Vegetation Management personnel when soil erosion has been stabilized and a vegetative cover at least equal to that present prior to disturbance and a plant species composition at least as desirable as that present to the disturbance is established. Establishment of all the species in the seed mixture will be considered as meeting the composition/desirable species criteria. EnCana's gathering system is operated according to natural gas industry standards. Supervisors and field personnel will monitor and control the system by driving throughout the project area Glenwood Springs, CO (970) 945-0453 State Patrol State of Colorado 202 Centennial Drive Glenwood Springs, CO (970) 945-6198 State Patrol (Dispatch) (970) 625-8095 EnCana would reimburse the appropriate emergency service provider for costs incurred in connection with emergency response for activities associated with this project. The Spill Plan serves as a guide to assist personnel in the proper response to an emergency incident and identifies emergency notification and state agency names and phone numbers that shall be contacted in the event of a spill. The successful handling of any oil discharge depends on four different operations: 1) Containment, 2) Removal, 3) Disposal, and 4) Cleanup which are summarized in the Spill Plan provided in Attachment 7. The Stormwater Management Plan provided in Attachment 3 also provides information with regards to spill prevention. 2.11 TRAFFIC IMPACT Mamm Creek Road will be used to access the project. Construction traffic will consist of approximately 20 pickup trucks and 2 crew trucks including EnCana personnel, plus 2 haul trucks to get the equipment on location. Construction of the pipeline could result in estimated pickup traffic of approximately 22 commuter round trips per day. Impacts will be temporary and will cease when construction of the pipeline is complete. 2.12 STAGING AREAS/CONSTRUCTION YARDS There are no construction staging areas or yards associated with this project. 2.13 PIPE TESTS The natural gas pipeline would be strength tested to prove its integrity and substantiate the MAOP. Head gas will be used to perform strength and leak tests. 3.0 POST -CONSTRUCTION ACTIVITIES 3.1 MAINTENANCE AND OPERATION EnCana will maintain the right-of-way for the life of the project. Maintenance will include repairing soil erosion and reseeding as necessary. The right-of-way will be considered satisfactorily reclaimed by the Garfield County Vegetation Management personnel when soil erosion has been stabilized and a vegetative cover at least equal to that present prior to disturbance and a plant species composition at least as desirable as that present to the disturbance is established. Establishment of all the species in the seed mixture will be considered as meeting the composition/desirable species criteria. EnCana's gathering system is operated according to natural gas industry standards. Supervisors and field personnel will monitor and control the system by driving throughout the project area inspecting facilities on a periodic basis. Disposal of any liquid and solid waste generated during maintenance and operation of the pipeline will be done at an approved facility in an environmentally sound and approved manner. 4.0 MITIGATION MEASURES The following protective measures have been adopted by EnCana to address specific resource values and environmental concerns associated with the project. 4.1 NOXIOUS WEEDS All construction equipment and vehicles will be clean and free of soil and weed seed prior to the start of construction. EnCana will monitor the right-of-way for noxious weed infestations and shall control noxious weeds as requested by fee -owner and Garfield County Vegetation Management personnel. The Weed Management Plan is provided in Attachment 5. The following measures identify how EnCana will control and reduce the spread of noxious weeds: • Ensure that equipment used on the project is clean and free of noxious weeds before arriving at the project. • Minimize soil disturbance to reduce areas of potential noxious weeds. Equipment and project vehicles will be confined to the flagged project right-of-way to minimize excess soil disturbance. • Salvage and segregate topsoil, then redistribute to reclaim the right-of-way. • Establish native grasses and forbs. The recommended seed mix in Section 2.8 of this plan identifies the appropriate seed mixes for reclamation of disturbed areas. • Eradicate weed introductions early through the uses of herbicides. Herbicides will only be applied by personnel that are licensed by the State of Colorado to use and apply herbicides. 4.2 EROSION AND STORMWATER Temporary and permanent erosion control measures will be implemented to control erosion and transport of sediment. Erosion and sediment controls will be used and maintained during all phases of construction, as necessary. Selection of appropriate erosion controls will be selected based on soil properties, steepness of the slope, and anticipated surface flow or runoff. During cleanup, the right-of-way will be graded as near as possible to the pre -construction contours and natural runoff and drainage pattems will be restored. Permanent waterbars will be constructed along all slopes in excess of five percent in gradient. The Stormwater Management Plan included in Attachment 3 provides further mitigation measures to be implemented during construction and operation of the pipeline. 12 4.3 THREATENED, ENDANGERED, AND SENSITIVE SPECIES WestWater Engineering, Inc. has completed the biological assessments of the East Dry Hollow Loop Phase 1 pipeline. The project route was surveyed for sensitive resources during the winter of 2008. The Sensitive Resource Reports for the project are provided in Attachment 5. No sensitive plant species were observed along the right-of-way. 4.4 CULTURAL RESOURCES The proposed project is located entirely within an existing, disturbed corridor. No known cultural areas are located within this corridor. 4.5 AIR QUALITY Dust shall be controlled by the use of water or an approved dust suppressant, as directed by Garfield County. 4.6 SOLID WASTE MANAGEMENT The construction right-of-way will be maintained in a sanitary condition at all times and waste materials on the project will be disposed of promptly at an appropriate waste disposal facility. Waste includes, but is not limited to, human waste, trash, garbage, ashes, welding rods, etc. Portable toilets will be available on-site. Liquid and solid waste generated during construction of the project will be disposed of in an approved manner at an appropriate facility so as not to impact air, water, soil, vegetation, or wildlife. 4.7 HAZARDOUS MATERIALS MANAGEMENT Construction, operation, and maintenance of the project will require the use of certain potentially hazardous materials such as fuels, explosives, and herbicides. By definition, hazardous materials (substances and wastes) have the potential to pose a significant threat to human health and the environment based upon quantity, concentration, or chemical composition. Generally, hazardous materials will be stored in contractor yards and not on the right-of-way. General site and materials management measures such as materials delivery, storage, handling and spill prevention, as well as, vehicle cleaning, fueling, maintenance and tracking controls are identified in Section 3.2 of the Stormwater Management Plan provided in Attachment 3. 13 R 9 3 6010 5864 1 / R 9 2 w ( / +iOUEY 31{ COVEY Hunter Mesa Water Treatment Facility KRK LTD SHAEFFER i { 4. e• 1_fj• v (SHIDELER tel` LAND& Vn CATTLE GRAHAM" ;t= SHIDELER LAND &' CATTLE, Vve!I SHIDELER Lanip & CATTLE 'SHIDELER LAND & CATTLE • BLM NN J5 DUNN ,SOCAGAWA PAVILION LAND DEV LLC WALKER CAS' E WEESE SCHULTZ DUN AABERG ZIMMERMAN K4E- OKAGAWA.7 4 BJM1-' F6 COUEV 599/ N4E DUNN P4� 0 0 U B7 Proposed East Dry Hollow Loop Phase 1 Pipeline +/-17222' or +/- 3.3 Miles C9E / WENDT' KRK LTD CHRISTNER ,6106 PITMAN COVEY COUEY .DODGE COVEY DU COUEY \ 1 COUEY 1 HILL /. EnCana Oil & Gas (USA) Inc. Proposed East Dry Hollow Loop Phase 1 Sections 4 - 6 & 9, T7S, R92W, 6th P.M. Garfield County, Colorado 908 Main Street Evanston, Wyoming 82930 Phone No. (307) 789-4545 44/0 —LEGEND— Existing LEGEND— Existing Access Proposed Pipelines DATE: March 4, 2008 SCALE: 1" = 2000' PROJECT NO.: 07-04-115 Topo SHEET 1 OF 1 PIPE BENDS ANGLE SECTION PIPE BEND POINT STATION (in Degrees) P.O.B. 0+00 BJM Ltd. P.1. 0+49 -26.8 P.I. 0+86 27.1 P.I. 2+33 -14.3 P.I. 5+21 12.8 P.I. 5+59 8.9 P.I. 7+71 -19.9 P.1. 8+76 -10.2 P.I. 9+79 32.7 P.I. 12+66 0.5 P.I. 15+06 -0.1 P.1. 17+38 69.3 P.I. 18+09 -1.6 P.1. 21+38 -12.1 P.1. 22+45 -2.7 P.1. 23+63 0.5 P.I. 25+06 -10.9 P.I. 26+16 -13.0 P.I. 26+96 -72.1 P.I. 27+76 45.9 P.I. 29+53 25.6 P.I. 29+85 11.8 P.I. 31+24 16.2 P.1. 31+75 12.6 P.I. 33+61 74.0 P.I. 34+68 -3.8 P.I. 36+54 77.6 P.I. 39+87 -1.9 P.I. 40+62 -11.9 P.I. 43+16 -6.9 P.I. 43+69 -41.9 P.7. 44+41 -19.7 RI. 45+39 -20.3 P.I. 48+58 -18.8 P.I. 49+97 19.2 P.I. 52+54 3.7 P.I. 54+61 3.8 P.I. 57+90 27.1 P.I. 58+26 39.9 P.I. 60+96 5.5 P.I. 63+03 -7.3 P.I. 63+63 -10.4 P.I. 64+66 -5.9 P.I. 66+93 -27.9 P.I. 67+99 -35.9 P.I. 68+94 -21.8 P.I. 70+61 18.3 P.I. 73+63 11.7 P.I. 75+58 5.0 P.I. 77+22 10.3 P.I. 77+90 26.3 P.I. 79+13 9.0 P.1. 80+20 -41.8 P.I. 81+31 -5.8 P.I. 84+45 20.5 P.I. 86+73 27.7 P.I. 87+64 -114.2 P.1. 89+25 -19.9 P.I. 91+84 71.0 P.I. 96+26 -2.5 P.I. 96+95 2.9 P.I. 97+96 -0.7 P.I. 99+60 -1.3 P.I. 100+73 -30.2 P.I. 101+12 -14.6 P.I. 103+06 42.0 P.I. 103+44 27.6 P.I. 106+30 -25.2 P.I. 107+79 -0.1 P.I. 113+35 -1.4 P.I. 117+38 3.7 P.I. 178+10 0.7 P.I. 121+34 -4.9 P.I. 123+05 7.1 P.I. 727+96 23.9 P.I. 728+80 3.6 P.I. 729+52 0.8 P.I. 732+02 -0.9 P.I. 734+89 -0.4 P.I. 737+20 1.4 P.I. 742+24 -0.8 P.I. 743+22 0.1 P.I. 747+83 -0.1 P.I. 154+50 0.2 P.I. 765+27 0.0 P.O.E. 172+22 -0.3 RIGHT-OF-WAY LENGTHS PROPERTY OWNER SECTION FEET TOTAL KRK Ltd. Sec. 6, T7S R92W 1661.41 1661.41 BJM Ltd. Sec. 6, T7S R92W 2680.16 2680.16 COUEY Sec. 5, T7S R92W 4853.15 4853.15 DUNN Sec. 5, T7S R92W 1484.39 8027.77 Sec. 4, T7S R92W 5594.37 Sec. 9, T7S R92W 949.01 12.5 Total 17222.49 RIGHT-OF-WAY LIMITS BOX Scale: As Shown Reference Points FROM TO Additional Temporary Work Space Left Permanent Right -of -Way Left Permanent Right -of -Way Right Additional Temporary Work Space Right STA 0+00 STA 0+49 47.5' 12.5' 12.5 2.5' STA 0+49 STA 9+79.8 2.5 12.5' 12.5 475' 514 9+79.8 51A 17+38 47.5' 12.5' 12.5 2.5' STA 17+38 STA 26+72 2.5' 12.5' 12.5 47.5' STA 26+72 STA 28+22 27.5' 12.5' 12.5 22.5' STA 28+22 STA 31+75 47.5' 12.5' 12.5 2.5' STA 31+75 STA 33+82 22.5' 12.5' 12.5 27.5' STA 33+82 STA 48+58 2.5' 12.5' 12.5 47.5' 51A 48+58 51A 50+22 27.5' 12.5' 12.5 22.5' STA 50+22 STA 127+62 47.5' 12.5' 12.5 2.5' STA 127+62 STA 729+52 12.5' 12.5' 12.5 37.5' STA 129+52 STA 172+22 2.5 12.5' 12.5 47.5' LECFNQ 0 SECTION CORNER LOCATED P.1. POINT OF INTERSECTION P.O.B. P.O.E. P.O.S.L. POINT OF BEGINNING POINT OF ENDING POINT ON SECTION LINE P.O.P.L. POINT ON PROPERTY LINE BASIS OF BEARING The base bearing for this survey is 588'53'78"W, 2642.80 feet between found monuments at the Northeast Corner and the North One -Quarter Corner of Section 9, T7S, R92W, 6th P.M. NOTES: 7. Underground utilities were located using a pipe locator, no lines were exposed. Therefore, true locations may vary from those shown on these drawings. Extreme coution should be used when crossing or coming close to these existing lines during construction. There is no warranty, expressed or implied, by EnCana Oil & Gas (USA) Inc. or Wosatch Surveying as to the completeness or exact location of existing utilities. CERTIFICATE OF SURVEYOR I, TED TAGGART OF FRUITA, COLORADO HEREBY CERTIFY THAT THIS MAP WAS MADE FROM NOTES TAKEN DURING AN ACTUAL SURVEY MADE BY ME OR UNDER MY DIRECTION FOR ENCANA OIL & GAS ((ISA) INC. AND THAT THE RESULTS OF WHICH ARE CORRECTLY SHOWN HEREON. 908 Main Street Evanston, Wyoming 82930 Phone No. (307) 789-4545 PIPELINE RIGHT-OF-WAY DESCRIPTION A PIPELINE RIGHT-OF-WAY LOCATED IN THE 51/2 51/2 OF SECTION 6, THE 57/1/4 AND THE N1/2 5E1/4 OF SECTION 5, THE SW1/4 AND THE 5I/2 SE1/4 OF SECTION 4, AND THE NW1/4 NE1/4 OF SECTION 9, T75, R92W, 6TH P.M.. GARFIELD COUNTY, COLORADO, THE CENTERLINE OF SAID RIGHT-OF-WAY BEING MORE PARTICULARLY DESCRIBED AS FOLLOWS: BEGINNING AT A POINT ON T111 WEST LINE OF SAID SECTION 6 LYING N 0.0116" E, 19.74 FEET FROM THE SOUTHWEST CORNER THEREOF; THENCE N 88'32'19" E, 694.49 FEET' THENCE N 88447'19" E, 572.97 FEET; THENCE N 88'49'39" 0 393.95 FEET TO A POINT LYING ON THE WEST LINE OF THE 5E1/4 OF SAID SECTION 6; THENCE CONTINUING N 88'49'39" E, 110.92 FEET: THENCE N 88'3610" E, 407.86 FEET,; THENCE N 88'44'03" E, 258.61 FEET; THENCE N 88'40'09" E, 460.93 FEET, THENCE N 8929'14" E, 98.37 FEET,' THENCE N 88'0352" E, 504.00 FEET' THENCE N 887453" E, 230.93 FEET; THENCE N 89'1914" E, 287.19 FEET; THENCE N 88'34'27" E, 249.90 FEET: THENCE N 85'01'33" E, 71.51 FEET TO A POINT ON THE WEST LINE OF SAID SECTION 5, LYING N 202'00" 5 37.09 FEET FROM THE SOUTHWEST CORNER THEREOF; THENCE CONTINUING N 85'01'33" E, 84.60 FEET THENCE N 61'06'26" E, 490.97 FEET THENCE N 5958'74" E, 171.22 FEET,; THENCE N 6451'07" E. 323.62 FEET; THENCE N 64'08'57" E. 72.10 FEET; THENCE N 6025'22" E, 403.18 FEET; THENCE N 61'46'05" E, 556.15 FEET; THENCE N 615225" E, 148.16 FEET THENCE N 87'0353" E, 286.49 FEET; THENCE N 5928'25" E, 36.30 FEET; THENCE N 17'2624" E, 194.07 FEET THENCE N 3159'45" E, 38.42 FEED THENCE N 6708'48" E, 112.70 FEET; THENCE N 6326'03" E, 764.23 FEET; THENCE N 63'31'13" E, 701.11 FEET; THENCE N 60'35'06" E. 69.53 FEET' THENCE N 63'05'11" E. 441.49 FEET; THENCE N 0756'40" W, 258.66 FEET; THENCE N 115856" E, 161.29 FEET; THENCE 5 53'52'35" E, 91.19 FEET,' THENCE 5 81'33'27" E, 227.98 FEET; THENCE N 77'54'39" E. 313.77 FEET; THENCE N 83'41'48" E, 103.92 FEET TO A POINT ON THE WEST LINE OF SAID NE1/4 5E1/4 OF SAID SECTION 5; THENCE CONTINUING N 83'41'48" E, 7.74 FEET; THENCE 5 54'27'42" E, 106.70 FEET; THENCE S 63'27'32" E, 123.03 FEET; THENCE 5 89'42'27" E, 68.02 FEET; THENCE N 79'57'46" E, 16368 FEET; THENCE N 7457'38" E, 195.27 FEET THENCE N 63'14'30" E, 302.31 FEET; THENCE N 445752" E, 166.33 FEET; THENCE N 66'46'02" E, 94.72 FEET; THENCE 5 7723'02" E, 106.18 FEET; THENCE S 4928'07" E, 150.41 FEET TO A POINT ON THE WEST LINE OF SAID SECTION 4, LYING N 216'38" W, 2198.00 FEET FROM 71-71 5001HWE51 CORNER THEREOF; THENCE CONTINUING S 4928'07" E, 76.99 FEET; THENCE S 43'35'40" E, 102.83 FEET; THENCE 5 3313'06" E. 60.06 FEET; THENCE S 2555'42" E, 207.37 FEET; THENCE 5 31'28'01" E, 269.87 FEET; THENCE 5 712052" E, 36.28 FEET;; THENCE N 81'30'54" E, 328.07 FEET; THENCE N 77'40'35" E. 207.46 FEET THENCE N 74'32'08" E, 256.62 FEET' THENCE N 5522'56" E, 139.34 FEET: THENCE N 7411'53" E, 318.73 FEET' THENCE S 85'29'07" E, 97.85 FEET; THENCE 5 65'49'48" E, 72.31 FEET' THENCE 5 2357'20" E, 53.23 FEET; THENCE 5 17'04'24" 5 254.05 FEET; THENCE S 05'1214" 1, 80.91 FEET; THENCE 5 03'2051" E. 326.89 FEET; THENCE 5 2055'58" 5 185.80 FEET; THENCE 5 17'06'27" E, 107.71 FEET; THENCE 5 31'06'08" E, 185.23 FEET; THENCE 5 43'39'57" E. 51.14 FEET; THENCE 5 5953'49" E, 139.53 FEET; THENCE S 71'40'16" E, 31.82 FEET; THENCE N 82'4129" E, 176.61 FEET; THENCE N 36'4757" E. 15.83 FEET; THENCE N 36'4757" E, 17.47 FEET; THENCE N 36'47'57' E, 47.01 FEET; THENCE S 71'08'58" E. 79.89 FEET; THENCE 5 58'07'14" E, 109.77 FEET; THENCE S 4741322" E, 143.18 FEET; THENCE S 46'0818" E, 117.88 FEET; THENCE 5 3221'29" E. 107.16 FEET,; THENCE 5 207717" E, 329./3 FEET TO A POINT ON THE NORTH LINE OF 5A10 SECTION 9, LYING 5 8853'18" W, 2328.53 FEET FROM THE NORTHEAST CORNER THEREOF; THENCE 5 2154'33" E, 70.73 FEET THENCE N 88'46'20" E, 231.96 FEET; THENCE N 8851'11" E. 240.40 FEET; THENCE N 8821'37" E, 286.85 FEET; THENCE N 55'36'48" E, 103.34 FEET THENCE N 6550'48" E, 15.73 FEET TO A POINT ON THE SOUTH LINE OF SAID SECTION 4, LYING S 88'53'18" W, 1443.34 FEET FROM THE SOUTHEAST CORNER THEREOF; THENCE CONTINUING N 6550'48" E, 88.48 FEET: THENCE N 85'42'33" E, 212.57 FEET; THENCE N 76'48'42" E, 38.17 FEET,; THENCE N 64'00'28" E, 287.68 FEET' THENCE N 7876'41" E, 147.32 FEET; THENCE N 51'10'09" E, 37.17 FEET' THENCE N 775552" E, 49.02 FEET TO THE POINT OF ENDING, SAID POINT LYING N 70'39'22" W. 671.38 FEET FROM THE SOUTHEAST CORNER OF SAID SECTION 4. 71I0 BASE BEARING FOR THIS SURVEY BEING S 8853'18" W, 2642.80 FEET BETWEEN FOUND MONUMENTS AT THE NORTHEAST CORNER AND NORTH 1/4 CORNER OF SECTION 9, 175, R92W. Map Showing EnCana Oil & Gas (USA) Inc. East Dry Hollow Loop Phase 1 Plan & Profile Located in Sections 4, 5, 6, & 9, T7S, R92W, 6th P.M. GARFIELD COUNTY, COLORADO Right -of -Way Scale: As Shown SHEET 1 OF 5 Project No. 07-04-115 Date Surveyed: Nov. 2007 Date 1/02/08 Drawn: Latest e t Revision3/21/08 Bp - N o E W Z NORTHWEST CORNER 5947 6 SEC.1947 CLO BRASS CAP j d ¢ 1 LINE TABLE V? K. y- UNE DIRECTION LENGTH t coFe Part of the 91/2 SW1/4 LI N88'32'19"E 694.49 W > N 6, T7SR92W L2 N88'47'19"E 572.97 SECTION L3 N88'49"39"E 393.95 Owner: KRK Ltd. L4 N88'49'39"E 110.92 _ L5 N88'36'10"E 407.86 L6 N88'44'03"E 258.61 460.93 2 o Part of Lot 3 L7 L8 N88'40'09"E N89'29'14"E 9831 SECTION 6, c L9 N88103"52"E 504.00 m T7S R92W Owner: KRK Ltd. LPL s s £ m it k Pipeline d SE1/4 tri HUNTER MESA u Centerline o fSECTION Right -of -Way 6, T7S R92W BJM Ltd. COMPRESSOR Owner: ,; STATION a P.O.E. OF PIPELINE c� RIGHT—OF—WAY e u In L10 N 7 L7 La Ls STA: 172+22.5 Ls L6 _ (INSTALL RECEIVER) / L3 14 Lz LI —;o=�D n (19.74' ' SOUTHWEST CORNER .A,�_. .' _ p —p— - o Section Line /n �, .. N r- m EXISTING WATERLINE co N + + + O r j w w NN) N m o } N N } N + o + N + } N o W N a w A CO P 1947 GLO BRASS CAP LII + + N O O ri A 0. 0.0 SN06636 PLAN VIEW o6.63 n mIES'I o O O O N (0(0 CD _ D 0 0 0 .. m6. v O V J 0 "3 0 0 > D 0 0 IID 0 0 m (4 0 AA O O 0 Iv n0 II II ""r East Dry Hollow Loop Phase 1 Garfield County, Colorado Plan & Profile Details PROFILE VIEW Sta. 172+22.5 Point of Ending EXISTING GROUND ----_ _ — _--_2_____Sta. 150+44 ------r- Sta. 142+82 /DrainageCrosaing ______ __--__----- / Access Road pATU4t FLAT = 5755.0' — 0 (1 O b NI (0 0 b b N O 0 (O 0) 0 O b N 6 00 0 0 0 (0 0 b Y '0 0 0 0 Ni 0 0 N 0 0 0 0 (0 03 0 n O b 0 0) 0 0 b V 04 0 0 b 0 n 0 h b O 0 0 73 b O O b O 0 (V 73 0 b 0 7< O CO 0 b O b N b O N b O b * * 0 ^ O N O * el 0 0 h 73 * b h t` O b 0 04 0 b h (0 O '0 O 07 O (0 N N O (0 0) O 0 0, 06 N. 0 Q b Q 1< b 0 04 b b b n O b N ^ b b O b 0) O b h O b ry 0 b h Oi SI N 172+00 170+00 168+00 166+00 164+00 162+00 160+00 158+00 156+00 154+00 152+00 150+00 148+00 146+00 144+00 142+00 140+00 138+00 136+00 134+00 132+00 130+00 HORIZ. SCALE: 1"— 200' VERT. SCALE: 1= 100' Sheet2 I of5 T $- yy�� ,w W LLLL NOR SR ST 1995 ALUMINUM CAP LS 27613 SEE DETAIL Pipeline //2 29 ��1, ' ' / ',MU 1 7' Nemo sr Lai 908 awri SURVEYING e"�a'"�"""� Rp. n��®+sle Ni o- W Tri DETAIL #1 v Centerline of Right -of -Way / /� �J� , N ' m t off° ro NOT TO SCALE m N �,„a�_ �.p� � m 11' a9 .....1 3 OOwner: %. \v r v o O. m `I� i,- < ) STA: 128+79 Fenceline SW1/4 SECTION 5, T7SR92W Couey- / - +BORE AREA / / u+ + m DETAIL #2 - - d O `:i STA: 128+72 (�" Gas)N W N Proposed Pipeline O eUne P .S.L. 1: T1A 1284 STA: 128 STA: 128+52 (Woterline) - L21 � vo ' © NOT TO SCALE 1.130 / ! 1g ¢ 3 O Z 1 Ex\ting Wo ten\ne Sec. 6 op D // o O W+ j o O / + + + 0 CT CI , / o W m ? - q v 9 N o / `' + io --6 c Propose Pip= - Sec. 7 cb 610 (1) 1J1 / / 3 1 0 x 0 VI . LINE TABLE 0 e'0 a / / ' 0 ,n, a LINE DIRECTION LENGTH / �`8 + y _ n (0 N N _, L10 LI1 N88'24'53"E N89'19"14"E 230.93 287.19 A / 0 / a W N LINE TABLE o'o) Ex`s \ne,7� e - ,a ++ 'c0 L12 N88'34'27"E 249.90 / J1 ' LINE DIRECTION LENGTH .N ti ,o 1. • n m L13 N85'01'33""E 71.51 / - L20 N61'S2'25'"E 148.16 +" .o pn mo 1.730 N85'01 '33"E 84.60 EXISTING WATERLINE / �j6 l 7,1 / 1.21 N8T03'53"E 286.49 ,� + L14 N61'06'26"E 490.97 \ '^ O, v, / 1.22 N5928'25"E 38.30 '°1o [15 N59'58"14"E 171.22 \ n + v -o °' L23 N17'26'24"E 194.07 m + �. 1.16 N64'S1"07"E 323.62 _ o : / �- N in L24 N31'59'45"E 38.42 to .o aU GI L17 N64'08'57"E 72.10 / -0 0) + L25 N62'08'48"E 112.70 �m N 1.78 N6025'22"E 403.18 / - + o L26 N63'26'03"E 164.23 a o „ nmse39 1.79 N67'46'05"E 556.15 ts- /4 a CO L27 N63'31'13"E 701.11 a ""`m East Dry Hollow Loop Phase 1 Garfield County, Colorado Plan & Profile Details RI J + o L28 N60'35'06"E 69.53 o 60.0111174 SEE DETAIL #1 / o ° L29 N63'05'11"E 447.49....4.CORNER 110 171 112 I�II�N O Section 5 P0 1 SEC. 5 19 78 ALUMINUM CAP ..� - - - -v �c9yV'] (1. w o 7> ; - - - \I,I%; Section 8 CA N ti N89'29'3711E, 2648.41' 0) 10+ + + to ++ + co O OI No N30 N) N N W c°in W O O T 2 00 0 -0 £ £ m PLAN VIEW oo N0 cd dna - -� PROFILE 01 8 VIEW _ _ - - --�\\ oU ^ �� mp .2' .� --- ----- EXISTING GROUND --- ^ o co W - �m v ' 5 ` m W 03 E co C oj _ v c cd EnCana Oil & Gas (USA) Inc. DATUM RILEY = 5755.0' 1. 0 rn 6 tT tT '0 "I n 0) N 0 0)i 0) h 0) 9) N ro -: m 0) h 4 0 O 41 n N 0) N N N ry < to 0 N V 'a "1 to '0 "I to 0 is in 0) in 0) N ul 0) 0, 6 N 0) to u) In h Q to 0) 1 m N N Y La q 1. .- v) "I 0V01 07 V Q to 1\ O to 4 a "I b < Q in 0) M ry to tJ 0 N 6 c`;', u) 0 ' M 0) "I N 6 N N N b ui 0) '0 0 T n n 1` n AD '0 N Q 0 "I '0 O of r< roN. u) '0 CO o n 10 Ip. I. "I 0 n4 1. "I '0 ''0 N. "I N V '0 ^ NI to .- N. '0 ^ 7. O '6 "I 0 128+00 126+00 124+00 122+00 120+00 118+00 116+00 114+00 112+00 110+00 108+00 106+00 104+00 102+00 100+00 98+00 96+00 94+00 92+00 90+00 88+00 HORIZ. SCALE 1"= 200' VERT. SCALE: 1 = 100' Sheet I of 5 ,!NORTHWEST PREPARED BY AT ell 91:00 Mein SOW SURVEYING E'"1, W,amFp 8293° R i g 1 CORNER SEC. 4 W 1994 ALUMINUM CAP LL LS 27613 Z ._ _ 1,1 -- p - cV LI, C----- J 1 O UQ I a+ o (0 1 a N C ^ M O 00 N� I rn 'o o M d °'' Ny ° o C 0 O) 00 + a' 1') C p ,S1 as C '� 0, coto fco +°�+. 'O C N UI �� 0 P. 0 CO Q U0 N O� pN O d'''O c° Imo °^° ° o .g_ M ,io . a�a: j colo" DD In o ^ NI+ 0 C a) + + N. is t-' 4s ,-; s+d+.+ (O in U W +0o0 N W W (° M N ^ ,F� nj �R6, �� up (°0 ‘-.. N1/2SW1/4 SECTION 4, T7S R92W Owner: Dunn n a13 '/a° C= g> COVEY 5-10 �� PADS 61 I! I "P 9I 1 + ; ° c4- d a° �-•r' �\a` L31 z z n ^ a k4 r4 w � . W 4 ao - f 1• L35 - p -_or - L34 L34 L33 L33 ' \ 01 , N - Lol- ro ++ r) M a) ") n ~tea i •4; o_1-.4 BORE AREA- (51 POCO o n o^o n rn N ^ >� coL48N 5,1 +M hi �_ . • r� ^ Lo i P.I. 63+63.6 q m (n+ + :i 'i L. ^ 1- R .. 3 �� ��j d� ^ i --- ' L49 163+03.5 BORE AREA • A�!\ __ ram S Mi et- �' 03 A. W } 4f' ��-' L41 C �A: 62+73 (Drainage) a a e ¢- co - L40 ( O .0 L50 U) v}W \.moi 4. n a Las �' P 'i P.I. 89+25.9 DUNN cn -1 S D 1 8 01 I Tor ` l L30 NW1/4 SET/4 SECTION 5, T7S R92W a) •-. -1 DUNN \ 5-9 - J NE1/4 SE1/4 SECTION 5, T7S R92W Owner: Dunn avi coU4-12I \ a r 1 cn P.I. 60+96.2 l N J 4, . -D p= \ PAD k 1 o w o r - \Sr 0 o iia °r' + ± �c�k Owner: Couey c`'i. i X55 o PAD D a o o� ca ,A c0 k P.I. 91+84.5 Q EXISTING / _ + + 0 PIPELINES 4 D �, p� N `1 °+ '» m m wLT o .STA: 92+69.4 (Drainage) (7S -92W-5-6) 1. 29 l f cn = w Centerline of Pipeline \ r L53 -� -1 , • + +- o 0. 0- Right -of -Way -1 N v O� o ° m -N- u v w �+ co, r1 3 0 9° 00 Ln (r + + 4- X W :O .-a 1 N + + N U7 rt� .."-• 0 0 ni a) O v LINE TABLE LINE TABLE 1.6 O o �� �ni.°i n w u, SIJOISIA3a P'°""` East Dry Hollow Loop Phase 1 Garfield County, Colorado Plan & Profile Details LINE DIRECTION LENGTH LINE DIRECTION LENGTH N 0 9. om . -1 r� L30 N0756'40"W 258.66 L44 N66'46'02"E 94.72 LD °o m aai _---- L31 N11'S8'S6"E 161.29 L45 577'23'02"E 106,18 ! rn a'(`0o " 4- L32 S53'52'35"E 91.19 L46 S49'28'07"E 150.41 N v L33 S81'33'27"E 227.98 L47 S49'28'07"E 76.99 L34 N77'54'39"E 313.77 L48 S43'35'40"E 102.83 co i L35 N83'41'48"E 103.92 L49 S33'13'06"E 60.06 L36 N83'41'48"E 7.74 L50 S25'55'42"E 207.31 o 4- L37 S54 27'42"E 106.70 L51 S31 28'01 "E 269.87 V) - L38 S6327'32"E 123.03 L52 S7120'52"E 36.28 14 L39 S89 42'27"E 68.02 L53 N81 30'54"E 328.07 L40 N7957'46"E 163.68 L54 N77'40'35"E 207.46 L41 N74 57'38"E 195.27 L55 N74 32'08"E 256.62 L42 N63'14'30"E 302.31 L56 N5522'56"E 139.34 SOUTHWEST L43 N4457'52"E 166.33 L57 N74'11'53"E 318.73 4 CORNER L58 S85 29'07"E 97.85 11EC. ALUMINUM PLAN VIEW CAP UELS 17492 1 PROFILE VIEW m v C W N. 2ti U v c &a E L o o `a. 52+35 (Begin Bore) Sta. 47+83 (End Bore) 47+26 Drainage Crossing Sta. 46+71 (Begin Bore) Sta. 45+70 Access Road PREPAR8. FOR cn 0 EnCana Oil & Gas (USA) Inc. m h EXISTING GROUND_ - _ _ - m ¢ D y . ---� DATUM ELE'V = 5755.0' 0 00 n (n 1 (tj q) n t) W of ap n (() (0 '(3 m n al IN Qi o, n h n M o d) h 5807.8 O, .. n] 0) 5812.9 (0 N 47 10 (n N o 0) N (•j ") (0 N h V M 47 0) W of •t (0 I() IN of st .0 I() 5858.9 n 0 (0 4D N 0 ('i (D 40 0) O, '7 N "D h 0) (O (' W 0) )- 10 0) N 5878.2 o, O N (O 0) •- vi 4] 0) 01 .p 0 0) 0) 5927.0 V N M 0) h (0 ei N O( 0) 5930.3 n (1) N V� (0 4- (•) O) 0) 5909.2 ') I(I O m 0) 5900.7 O( Oi O Of h 4) (� W h 5922.6 5927.0 `i. .D 0' q N •` N O( N •- N rn N 5936.3 5934.2 Oi m 0) 86+00 84+00 82+00 80+00 78+00 76+00 74+00 72+00 70+00 68+00 66+00 64+00 62+00 60+00 58+00 56+00 54+00 52+00 50+00 48+00 46+00 44+00 HORIZ. SCALE: 1"= 200' VERT. SCALE, 1"= 100' ATC ,� SURVEYING Rom No. (b7l]YISR L59 P.I. 43+69.7 LINE TABLE N\ 160 LINE DIRECTION LENGTH P.I. 43+16.4 L59 565'49'48"E 72.31 1 L60 523'57'20"E 53.23 L' L61 S1 704'24"E 254.05 IIiNLiI L61 L62 50512'14"E 80.91 L63 503'20'51"E 326.89 - W \ L64 520'55'58"E 185.80 L65 57706'27"E 107.71 P.I. 40+62.4 L66 531'06'08"E 185.23 167 543'39'57"E 51.14 L62 168 55953'49"E 139.53 P.I. 39+81.5 L69 571'40'16"E 31.82 L70 N8241' 29"E 176.61 I 171 1‘136'47.57t15.83 V2 N36'47'57 E 17.47 L 6 3 L73 N36'47'57E 47.01 / 174 571'08'58"E 79.89 L75 558'07'14"E 109.77 STA: 37+63 (Droinoge) L76 54713'22"E 143.18 gg R @ 4 $ p@ g IE 177 546'08'18"E 117.88 L78 532'21'29"E 107.16 P.I. 36+54.6 L79 520'17'17"E 329.13 70.73 1 L64 N88 231.96 L82 N88"51.11 rt 240.40 STA 35+32.7 (DVH Power) EXISTING PIPELINE 183L81 N88'46'20"E '21'.31t 286.85 L84 N55'36'48"E 103.34 ° • I. 34+68.8 L84A N65'50'48"E 15.73 5 L85 N65'50'48"E 88.48 m 33+61.1 N4E L86 N85'42'23"E 212.57 L87 N76'48'42'E 38.17 WELL ,L88 \I N6400'28"E 287.68 m 5 PAD L89 N78'16'41 "E 147.32 ww°y P.I. 26+96.4 L90 N51'10'09"E 3717 SE1/4 SW1/4 +LA no 173 174 191 N7735'S2'E 49.02 SECTION 4, PS R92W rn� mp I. 26+16.6 5P Owner: Dunn Na • \ L71 7 I. 2s+os.e Centerline of Pipeline 0 •w w `o m ++ y� 170 °nI„ Right of Way -. 0J + >-e �. • p Nb N --J.-4- i�o J `o+ + ++!" A +c, oi VcnO ow 6 \ P.I. 23+63.6 \ L77 S1/2 5E1/4 SECTION 4, T7S R92W Owner: Dunn o a y P4E / N of o) 641-N WELL / va 14 " a SOUTH 1/4 P.I. LJ6CO \ \ O O PAD P. 41- n PHASE2m \I21±38.66 c a N + (Co m°: o D 0O 0 ZF- (� CC H ` V) q O 1^ J 11^^ VJ L'9LL5 DESCRIPTION: EAST DRY HOLLOW PHASE 1 SECTION 5, T7S, R92W, GARFIELD COUNTY, COLORADO PROJECT NUMBER: 07-04-115 PREPARED BY: r\ Professional Land Surveyors ATM 906 Main Street SURVEYFNG Evanston, Wyoming 82930 1 I- Q ¢W in w 55 N. N (0 N N Cr O(6 0 t Z L0 N N � .E N 07 cn ce 0 w wti 3Z O ; N n o ( o E cn N a O vi E k- J -o w 32108 NI038 L'9LL5 O c) �^ 0.-, 0 o 0 � L., cco 0p '-`5 n o co M o co o co co wo 'c' 0 J z z z ooa 66+96 :vls I O'LLLS to rn o Ki ro Jro ct /M J 0 0I-m Q + a�0� o N .0 i _ J f) / CL9o* to J 0 O Z c z OJ (aao8 ui698) 66+96 : b'1 S CC 0 Q W 17Z+96 : t/1 X P U I 1.9Z+96 74 _8f+96 :b'1S d 315 0 Pernod HBO) 9 :d1S Goan,{y Roo- PoIIe 99+96 b1S —� 0\C\ OL +96 dl X x X\ X (aao8 Pu3) S6+96 \ : YJS Z .96+96 7'd E_7� \ t\-,.- 3. �� X u C W Z 5 I 5'8LLS 97+50 97+00 96-I HORIZONTAL SCALE: 1 "=40' / 32108 0N3 I S"ogLS CLIENT. EnCana Oil & Gas (USA) Inc. „) z o 'SURVEYED BY: WASATCH SURVEYING ASSOCIATES 906 MAIN STREET, EVANSTON, WY 82930 (307) 789-4545 96+96 :vlS / / £ 58L5 S / / S'Z6LS / / L '86L S CALE: 1 "= 40' > s zo85 W ,OZ=„ L :31v3S 1V3LW3A a 2401-064-00-128 3T DWIRE RAILSBACK BJM ZI ti A I BJM Hunter Mesa Water Treatment Facility 0 6 BJM KRK LTD 7 SHAEFFER 123-00-026 COUEY GRAHAM BARRY LIGHT O HIDELER 0 LAND d CATTL' 0 ro 32 ea COUEY SHIDELER LAND & CATTLE MANUPPELLA SHIDELER LAND& CATTLE HIDELER AAND& RA X24 al ILHELM 2401-041-00-208 (,365) SCHULTZ 345 IMMERMAN OKA� Proposed East Dry Hollow Phase t Pipeline Existing House PIl MAN (a,'8) Proposed East Dry Hollow Loop Phase 1 +/- 17222 Feet Within Garfield County Proposed East Dry Hollow Loop Phase 1 350' Offset ri REFERENCES GARFIELD COUNTY PARCEL MAPS BY PATE PREPARED FOR: EnCana Oil & Gas (USA) Inc. 0 1000 2000 I (SCALE N FEET) PREPARED 9Y: ATCK SURYLNfNer WO MAN Sheet EvxvM. t(1h9 45 Phone 049 PAAs. (Jo30n 4094.519 DATE March 4, 2008 SCALE P=2000' Proposed East Dry Hollow Loop Phase 1 Sections 4 - 6 & 9, T7S, R92W, 6th P.M. Garfield County, Colorado SHEET 1 OF 1 PROJECT NO.: 07-07415 0W(1. NAJAE: Exhibit C0RDI LLERAN March 5, 2008 Ms. Sue Nall U.S. Army Corps of Engineers 402 Rood Avenue, Room 142 Grand Junction, CO 81501-2563 Re: EnCana Oil and Gas (USA), Inc. Drainage Crossings Dear Ms. Nall, 826 211/2 Road Grand Junction, CO 81505 T: 970.263.7800 F: 970.263.7456 Cordilleran Compliance Services, Inc. (Cordilleran) on behalf of EnCana Oil and Gas (USA), Inc. (EnCana), recently inventoried a pipeline route crossing Mamm Creek and several ephemeral tributaries. The route extends across private land, and all United States Army Corps of Engineers (USACoE) jurisdictional water crossings are on property owned by the Couey family. This informational packet is being retained to comply with the Army Corps of Engineers Nationwide 404 permit requirements. Permitting for the crossings is being conducted under Nationwide 12 standards with optional courtesy notification of the USACoE. The work should be done in accordance with Colorado Regional Conditions. The Mamm Creek crossing will be constructed by directional boring. EnCana intends to construct the drainage crossings in accordance with USACoE regulations and best management practices. Attached with this letter are a location map, spreadsheet, and photographic log. Please do not hesitate to contact me at the above referenced phone number or at billmonroe@cordcomp.com if you have any questions or concerns. Thank you for your attention to this matter. Sincerely, Cordilleran Compliance Services, Inc. William Monroe Project Geologist Enclosure cc: Brenda Linster Herndon, EnCana Oil and Gas (USA), Inc. File Cordilleran Compliance Services, Inc. Grand Junction, CO • Denver, CO • Casper, WY • Laramie, WY• Lander, WY Environmental Consulting Engineers and Scientists • 2j • :zr GLM U ZUZ V 4 .a3aIHOs 0 t w� •; ESGAR _ o • ®., Z hi! Blz 2E 1tm i W 0 LL 1- il & Gas (USA) Inc. a V) M d O O (13.N31b09) OOOL�1 E 153 A cc N ti 0 , ; 31„i nu 0 0'' o u (Fc c ) CORDILLERAN Crossing Locations E. Dry Hollow Loop Pipeline Route Phase 1 EnCana Oil & Gas (USA) Inc. March 2008 826 21 1/2 Road Grand Junction, CO 81505 T: 970.263.7800 F: 970.263.7456 - / .." h>+\ / / f ir \ V0 ; 1 , \ • ( i" • G vvm Z .. Well e 17 _ 1: '0 r h / `-, / {l /' I i C ,''\ •N� if \\y li by y �z i. • fr ' / ®� Lc. 1 7, 'k/ A / VI, v-........,-_,=.: F`-_.• „ r� ' I) I ( 1� W . - , - r. tk .. ; ,I ' 4 • ' —7 S 2 �� may, `i ./;" it ; n / A / 1 ''• 1-'1. '-- t[/r I \ — 6Z Source Map: 7.5 Minute USGS Topographic Map (Hunter Mesa Quadrangle) Cordilleran Compliance Services, Inc. Grand Junction, CO • Denver, CO • Casper, WY • Laramie, WY • Lander, WY Environmental Consulting Engineers and Scientists 030408 table 7S -92W-4-13 E. Dry Hollow Loop PL V 7S 0 Hunter Mesa 0 NA Mamm Creek 39°28'24.1" 107° 40' 31.6" h o y m a W Buried Pipeline 0 0 0 0 0 0 25 0 0 0 ' 12 12 12 O O 0.000 T 0 U (FIELD SURVEY INFORMATION March 4, 2008, EnCana USA, E. Dry Hollow Loop Pipeline. S rn r E. Dry Hollow Loop PL d o 92W Hunter Mesa a L4 NA Mamm Creek 39° 28' 23.7" 107° 40'41.4" O 0 0. W Buried Pipeline 0 0 0 0 0 0 OS N 0.5 — — 0.5 O O en en O O p U 7S -92W-5-6 E. Dry Hollow Loop PL Vl 92W Hunter Mesa o ,C,y^ C4 Mamm Creek Colorado River 39° 28'20.6" h - ^ 0 O O cn •o 0 a Bored Pipeline 0 0 0 0 0 0 0 0 �n vi ry N N 0.0 0 O 0.000 N O U Site Number 'Pad or Access Road Number fi O C yy d Op IUSGS Quad fi h d Hydrologic Unit Code Drainage Name 0 t w bfi North Coordinates West Coordinates Ordinary High Water Mark (OHW; feet) Drainage Type Construction Description Fill Length (feet) Fill Width (feet) Culvert Size (feet in diameter) 1 Up Gradient Fill Height (Below OHW; feet) Down Gradient Fill Height (feet) Average Fill Height (feet) Estimated Disturbance Width (feet) Estimated Disturbance Area below OHW (square feet) Up Gradient OHW Width (feet) Down Gradient OHW Width (feet) Average OHW Width (feet) Top of Bank Height (feet) Up Gradient Top of Bank Width (feet) Down Gradient Top of Bank Width (feet) Average Top of Bank Width (feet) Approximate Cubic Yards Fill in Drainage Approximate Cubic Yards Fill Below Ordinary High Water Mark Approximate Fill Area Below Ordinary High Water Mark, Acres Landowners w 030408 table Photographic Log Drainage Crossings, E. Dry Hollow Loop EnCana Oil and Gas (USA), Inc. 3/4/2008 PHOTO 1 Location: E. Dry Hollow Loop Pipeline Site Number: 7S -92W-5-6 Coordinates: N39° 28' 20.6" W107° 41' 17.5" PHOTO 2 Location: E. Dry Hollow Loop Pipeline Site Number: 7S -92W-5-6 Coordinates: N39° 28' 20.6" W107° 41' 17.5" PHOTO 3 Location: E. Dry Hollow Loop Pipeline Site Number: 7S -92W-5-6 Coordinates: N39° 28' 20.6" W107° 41' 17.5" Photographic Log Drainage Crossings, E. Dry Hollow Loop EnCana Oil and Gas (USA), Inc. 3/4/2008 -_ f illO I,- • • _ ,' 1 •f .ate '_'y — # ism ► ; ,,. .x - - Location: E. Dry Hollow Loop Pipeline Site Number: 7S -92W-4-12 Coordinates: N39° 28' 23.7" W107° 40' PHOTO 4 41.4" _ jay F " tt 1: • - s TZ SA {" J� �f L ► Location: E. Dry Hollow Loop Pipeline Site Number: 7S -92W-4-13 Coordinates: N39° 28' 23.7" W107° 40' PHOTO 5 41.4" - , t, ,,,L, --[e L1 ,.`cYgly Y AI! VF if - 1.. r _ _- 114ss... .. ,._.J.4,1.1. �.di -.-•'`c t.. {L t _ ' ;t i tia _ - Location: E. Dry Hollow Loop Pipeline Site Number: 7S -92W-4-13 Coordinates: N39° 28' 23.7" W107° 40' PIIOTO 6 41.4" -`- S. *as: 03/11/2008 06:57 9706258627 GARCO ROAD BRIDCE: • -' PAGE 02/06 Received 03/11/08 East Dry Hollow Loop - Phase 1 Garfield County Construction Permit for Installation of Utilities in Public Right -of -Ways Applicant. Name: Encana Oil and Cras(USA),Inc. Address; 2717 CR 215, Suite 100 Parachute, CO 81635 Type of Installation: Road Bore Purpose: Pipcline&Road Bore length orinstallafian: 100 het County Road: 315 Nearest Intersection or Address: 4745 CR 315 Distance from Intersection or Address: .10 mile Direction from intersection or Address: South Side of Read: Full Road Width will notify Jake Mall Estimated Construction Schedule: Start:96Mn$O8 June 08 finish 4kwe110@8 July 08 prior to construction star * Start date dependent upon approval of GarfieldlConnty pi line Development P7 Request for permission to wake the above installation at the location Speed -lea is hercoy grante, suetect to the mowing terms, conditions and special provisions: Permit Number: GRRB0$-U-22 I. it is understood that the Applicant will cause the Installation to be nude at no expense whatsoever to Garfield County and that the Applicant will own and maintain the installation upon completion of work 2. The Applicant shell maintain the installation at all times and agrees to hold harmless the County of Garfield and its representatives. agents or employees from any and all liability, loss and damage which may arise out of or be connected with the installation, maintenance, alteration, removal or presence of the installation above described m any work o'r facility connected therewith, within the arta covered by this permit. 3, The entire installation repairs and clean up shall be completed prim to: 4t#Ot2008. 4, The traveling public shall be protected during the installation with proper warning signs or signals both day and night, and warning signs and signals shall be installed by and at the expense of the Applicant and in accordance with directions given by Om Board of County Commissioners or their representative. No open trench shall bepermitted in the traveled roadway after dark, unless othcrwlse specified in the Special Provisions below. 5. If. the Board of county Coounissioncrs so requires, Applicant shall math the inatnllation at the dosigeated location manner acceptable to the Board of County Commissioners or their Representative. 6. lnthe event any changes are made to this county road in the future that would necessitate removal for relocation of this installation, Applicant will do so promptly at Its own expense upon written request from the Board of County Commissioners. The County will not be responsible for any damage that may result in the maintenance of the county road to installation placed inside Public Right -of -Ways Limits. 7. Applicant will be required to shut off lines and remove all combustible materials from the right•of-way when.ecqucstcd to do so by The Board or County Commissioners because of necessary road construction or maintenance operations. Where the installation crosses Ute roadway, it shall be encased in pipe of larger diameter and the crossing shall be as nearly perpendicular to the roadway as physically possible. This installation shall be installed by the method of boring or jacking through beneath the road surface: however, open cut shall be allowed up to the edge of tlic surfaced pardon of the county mad. No water shall be used in the boring, and no tunneling shall be permitted. If boring is not successful then arrangements should be established with the County for possible excavation methods. na 8. 9. Where the installation crosses any ditches, canals or water carrying structures. wherever possible it shaft be pushed lb/Pugh and beneath a pipe of larger diameter thereby eliminating the necessity of trenching with a minimum bury of 4 foot. In no case shall the flow of water ever be impaired or interrupted, without arrangements having been made with the effected water company or ditch association. 10. pc instxilaeion must be accomplished m accozdance with accepted gnnd practices and conform to the recommendations of the National Electric Safety Code and to such Colorado stances as arc applicable. The above-described Road .Bore shall be 03/11/2008 06:57 9706258627 GARCO. ROAD BRIDGE - PAGE 03/06' installed beneath the surface of the right-of-way at a minimum depth of 6ft and the disturbed portion of thc right-of-way will be restored to its original condition. Any backfilling in the roadway shall be made in six-inch lifts and mechanically tamped and packed and thc last twelve inches of backfill shall be of stable granular material such as crushed rock or gravel. 11. Applicant shall be responsible for any repairs to roadway or right -of --way necessitated by the installation. 12. Applicant's installation shall be made ata location mutually agreed upon by Applicant and the Board of Cormnissioneis or their representative, and in accordance with details and specifications shown on the construction plans, a copy of which shall be furnished to Garfield County. 13. Applicant shall inform the Board of County Commissioners of construction methods, equipment and operational procedures that will be utilized and shall obtain the occurrence of the Board of County Corunissioners. 14. Applicant shall advise the Board of County Commissioners or their representatives at least 4S hours in advance of the time at which work on the installation will commence. 15. Any materials from excavation as the result of the installation will be removed from the road way surface each day. 16. Under no condition is an asphalt surface to be cut unless otherwise specified in the attached Special Provisions 17. Where reference is made herein to the representative of the Board of County Commissioners, such representative shall be the District Road Supervisor, unless otherwise specified in writing by the Board of County Commissioners. 18. This permit shall be valid during the estimated construction schedule set forth above. Neither the Owner, nor the Applicant Mali conduct any work pursuant to this permit at anytime other than that set forth in the estimated construction schedule. IN THE ROADWAY BETWEEN THE DITCHES 95% COMPACTION, HETwEEN DITCH AND FENCE LINE 8S% COMPACTION. TRENCHLIN E INSIDE.. ROADWAY. LAST LIFT NEEDS TO BE 2 MOT CLASS 6 ROADBASE. APPLICANT WILL BE REQUIRED TO MAINTAIN THE AREA WHEREIN UTILITY INSTALLATION IS MADE- DURING CONSTRUCTION AND TWO YEARS AFTER COMPLETION DATE. IT WILL BE THE APPLICANT'S RESPONSIBILITY, WHEN REQUESTED, TO SUPPLY AT THE . APPLICANT'S EXPENSE, COMPACTION TESTS AND RESULTS OF TESTS FORM A LICENSED PROFESSIONAL ENGINEER. Special Provisions 1. For read bore, road bore will be attempted 3 times beforeand open rnad cut will he permitted or boring tool is stuck. Permit holder will contact person issuing permit prior to cutting road surface. 2. Installations within in tht County .Right -of -Way over 1000ft in length require a survey and BOCC Approval and as - built upon completion. 3. Type of Backfill; Excavated Material If back fill is road base or excavated material, backfill will be compacted to 95% with water to include shoulders. drainage ditches and pits used for road bore. All rocks 10 inches or larger will be removed from site. No wet material removed from excavation will be used for backfill. 4. Asphalt Replatement: False. if true, asphalt will be 4 inches of hot compacted asphalt. Asphalt will be saw cut 2 feet larger than excavation area. Replacement of asphalt will be 1 lane minimum width thc size of the cut or full road width if the cut crosses the centerline of road. 5. Replacement of Magnesium Chloride Surface: False. If true, person issuing permit will give specification on replacement. The length of the road surface damaged by utility installation will require replacement. This will Include the hauling of equipment and materials. 6. Certified Traffic Required? False 7. Work Zone Signs Required? True 8, 9. Contractor Agrees to all Provisions in !Exhibit A. 10. 03/11/2008 06:57 970625862/ GARCU ROAD BRIDGE PAGE 04/06 Representative of the Board of County Commissioners of Garfield County, Colorado in accepting this permit, the undersigned, representing the Applicant, verifies that he bas read and understands all of the foregoing provisions: that he has the authority to sign for and bid the Applicant: and that by virtue of his signature, the Applicant, is bound by all the conditions set forth herein. THE COUNTY DOES NOT VERIFY THAT THERE IS AN EXISTING COUNTY OR PUBLIC RIGHT-OF-WAY WITHJN TO PLACE PROPOSED UTILITY. THE APPLICANT 1S RESPONSIBLE FOR VERIFYING THE EXITENCE OF ALL NECESSARY RIGHT-OF-WAY FOR THE PLACEMENT OF THE UTILITY. Utility Permit Applica Encana Oil and Gas(USA), Inc. 03/11/2008 06:57 9706258627 GARCO.ROAD BRIDGE PAGE 05/06 Garfield County Road and Bridge Department Special Provisions for Excavation of Road Surface and Installation Utility permit Number: GRB08-U-22 Applitant: Encana Oil and Gas(USA), )nc. Inspector; Jake Mali Sub-Contractor:Fugal & Sons I. Any oversized material (larger than 10 inches in diameter) that is not utilized in backfill will be removed from site by Applicant. Further, Applicant will Tert1OVC any frozen material from site. 2. When a paved or chipped surface is cut, it is to be replaced with a minimum of three (3) inch hot mix asphalt patch. A temporary patch with cold mix asphalt would be allowed. which would be replaced with hot mix asphalt when the weather or availability of materials allows the work to be completed. An asphalt or chipped surface cut would require the road to be straight cut and squared by means of a pavement cutter or saw. A chipped surface cut will require a seal coal of the patch that will be fulll width or half width of roadway when trenches nut with the road. For trenches across the road, the edges of the seal coat will overlap the existing edge. All Seal coats will overlap edges by a two -foot tldnimum to insure adequate seal over the undisturbed portion of the. roadway in the vicinity of the excavation. Asphalt hot mix or cold patches will be completed in a maximum of five working days, weather permitting. 3 When possible, all. installations should avoid the mop edge of a fill slope. 4, Installation in drainages subject to flash flooding will have a minimum bury of four feet deep that normal flow line at nearest abutment, wing wall. or culvert. 5. Installations at culvert crossings will be buried beneath the culvert with a minimum separation of l8 inches between installation and thc bottom of the cut ven. 6. Open [tenches adjacent to the traveled roadway shall be backfilled daily to within 100 feet of the working arca of the trench, and shall be barricaded with warning devices after. dark. A 3 foot high orange plastic fence will be installed daily to keep livestock out of the open trench after hour. 1. in areas being disturbed where vegetation is established, reseeding with a mixture either by broadcasting. drilling, and mulching with seed mixtures suitable to the climatic conditions or existing vegetation will be performed. Use only certified weed- tce seed. Noxious weed control will be ongoing along with re -vegetation. 8. The Applicant should check the right-of-way of surrounding landowners to see if other permits arc required, Forest Service. Garfield County Representative 1 Li Encana t an Gas(USA), Inc. (ncjz, iis(4. 03/11/2008 06:57 9705258627 GARCO ROAD BRIDGE PAGE --06/06 BOARD OF COUNTY COMMISSIONERS OF GARFIELD COUNTY CERTIFICATION AND AFFIDAVIT REGARDING ILLEGAL ALIENS The Contractor, whose name and signature appears below, certifies and agrees as follows: 1. The Contractor shall comply with the provisions of C.R.S. 8-17.5-101 et seq. The Contractor shall not knowingly employ or contract with an illegal alien to perform work for the Board of. County Commissioners of Garfield County, Colorado ("HOCC") or enter into a contract with a subcontractor that knowingly employs or contracts with an illegal alien. 2. The Contractor represents, warrants. and agrees that is has verified that it does not employ any illegal aliens; that it has participated or attempted to participate in the Hasid Pilot Employment Verification Program administered by the Social Security Administration and Department of Homeland Security; and otherwise shall comply with the .requirements of C.R.S. 8-17.5-102(2) (b). 7. The Contractor shall comply with all reasonable requests made in the course of an investigation under C.R.S. 8-17.5-102 by the Colorado Department of Labor and Employment. If the Contractor fails to comply with any requirement of this prov;.ei.on or C.R.S. 3-17.5.101 et seq., the HOCC may terminate work for breach and the contractor shall be liable for actual and coneequential damages to the State. 4. If the Contractor is a sole proprietor, the undersigned hereby swears or affirms under penalty of perjury under the laws of the State of Colorado that (check one): I am a United States citizen, or I am a Permanent Resident of the United States, or I am lawfully present in the United states pursuant to Federal law. S understand that this sworn statement is required by law because 1 am a sole proprietor entering into a contract to perform work for the MCC. I understand that state law requires me to provide proof that / am lawfully present in the United States prior to starting work for the BOCC. X further acknowledge that 1 will comply with the requirements of C.R.S. 24-76.5-101 et seq. and will produce the required form of identification prior to starting work. I acknowledge that making a false, fictitious, or fraudulent statement or representation in this sworn affidavit is punishable under the criminal laws of Colorado as perjury in the second degree under C.R.S. 18-8-503. CERTIFIED and AGREED to this _ day of , 200 CONTRACTOR: (contractor Full Legal. Name) FEIN or Social Security Number, By: Signature of Authorized Rep Title Permit Number: GRBOS-U-22 Exhibit A ENCANA.. EnCana Oil & Gas (USA) Inc. Volume 1 Master Stormwater Management Plan Mamm Creek Unit COR -034840 EnCana Oil & Gas (USA) Inc. Revised February 2008 Contents 1.0 Introduction 1-1 1.1 Site Specific Records 1-1 1.2 SWMP Administrator 1-2 2.0 Narrative Description of Master SWMP Permit Coverage Area 2-1 2.1 Sequence of Major Activities 2-1 2.1.1 Well Pads and Roads 2-1 2.1.2 Pipelines 2-2 2.1.3 Compressor Stations, Treatment Facilities, or Other Facilities. 2-4 2.2 Area Estimates 2-6 2.3 Description of Existing Topography and Soils 2-6 2.4 Description of Existing Vegetation 2-6 2.5 Identification of Potential Pollution Sources 2-7 2.6 Allowable Sources of Non-Stormwater Discharge 2-8 2.7 Receiving Water 2-8 2.8 Master SWMP Permit Area Map and Individual Stormwater Site Plans 2-9 3.0 Best Management Practices (BMPs) 3-1 3.1 Erosion, Drainage, and Sediment Control BMPs 3-1 3.2 Non-Stormwater Control BMPs 3-1 3.2.1 Materials Delivery and Storage 3-2 3.2.2 Material Handling and Spill Prevention 3-2 3.2.3 Vehicle Cleaning, Fueling, Maintenance, and Tracking Controls 3-2 3.2.4 Waste Management and Disposal 3-3 3.2.5 Dewatering 3-3 3.3 Stormwater Manual of BMPs 3-4 3.4 Phased BMP Implementation 3-5 4.0 Interim Reclamation and Final Stabilization 4-1 5.0 Inspection and Maintenance 5-1 5.1 Inspection Schedule 5-1 5.1.1 Minimum Inspection Schedule for active sites 5-1 5.1.2 Post -Storm Event Inspections at Temporarily Idle Sites 5-1 5.1.3 Completed Sites 5-1 5.1.4 Winter Conditions Inspections Exclusion 5-2 5.2 Performing Inspections 5-2 5.3 Maintenance 5-2 5.4 Documenting Inspections and Maintenance 5-3 6.0 Plan Revisions and Retention 6-1 7.0 Inactivation Notice 7-1 8.0 Signature 8-1 9.0 References 2 List of Appendices Appendix A General Permit Application Appendix B Revegetation Manual Appendix C Existing Soil and Vegetation Data Appendix D Master SWMP Permit Area Map Appendix E Stormwater Manual of Best Management Practices (BMPs) Appendix F Final Stabilization Certification Appendix G Inspection and Maintenance Report Form Appendix H Inactivation Form 1.0 Introduction This Master Stormwater Management Plan (Master SWMP) satisfies the Colorado Department of Public Health and Environment (CDPHE) Water Quality Control Division (WQCD) General Permit No. COR -030000 issued on May 31, 2007 for Stormwater Discharges Associated with Construction Activities (the Stormwater Construction Permit). EnCana Oil & Gas (USA) Inc. (EnCana) has submitted a General Permit Application to WQCD, a copy of which is provided as Appendix A. This Master SWMP has been prepared in compliance with CDPHE WQCD, the Federal Clean Water Act (CWA), and the National Pollutant Discharge Elimination Permit (NPDES) regulations found in 40 CFR, Part 122.26 for stormwater discharges. The objectives of this Master SWMP are to: 1. Identify all potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges associated with construction activity within this Master SWMP permit area at each project site; 2. Describe the practices to be used to reduce the pollutants in stormwater discharges associated with construction activity within this Master SWMP permit area at each project site (also known as Best Management Practices (BMPs)); and ensure the practices are selected and described in accordance with good engineering practices, including the installation, implementation and maintenance requirements; 3. Be properly prepared and updated to ensure compliance with the terms and conditions of the Stormwater Construction Permit; 4. Work hand in hand with the Site Specific Records, as described in the following section; and 5. Serve as an education tool and comprehensive reference/guide to stormwater management for inspectors, surveyors, engineers, and EnCana employees and contractors. EnCana construction activities fall under one of two types. Exploration and Production (E&P) sites involve the construction of well pads, roads, and other facilities. Midstream Services (also referred to as Gas Gathering) sites involve the construction of pipelines and compressor, treatment, and other facilities. This Master SWMP is intended to address stormwater management for any and all of these sites within this Master SWMP's Permit Coverage Area. 1.1 Site Specific Records While Volume 1 of the Master SWMP contains all of the general permit area information, Volume 2 of the Master SWMP contains all of the Site Specific Records including all Individual Stormwater Site Plans (Site Plans), as discussed in Section 2.8, and all Inspection and Maintenance Reports (discussed in Section 5.4). These Site Specific Records contain information specific to each site (each well pad, compressor station, section of road/pipeline, etc.), including information on areas of disturbance, ecosystems and vegetation, soil types, percent pre -disturbance vegetation, etc. Any changes to the design of individual sites or the BMPs used at those sites will be noted on the Site Plans as those changes occur, and kept with the Site Specific Records. The Site Specific Records (Volume 2 of the Master SWMP) are bound separately from the body of this Master SWMP; however, both are readily available during any inspection. Both the body of this SWMP (Volume 1) and the Site Specific Records (Volume 2) comprise the entire SWMP, and go hand in hand in keeping EnCana in compliance with stormwater regulations. The Site Specific Records will be kept at the EnCana field office in H:\Data\Stormwater Permits\,Mamm Creek SWMPVdamm Creek SWMP (East Dry Hallow Loop) 021808.doc 1-1 Revised February 2008 Parachute during active construction and site inspections to ensure accurate implementation, inspections, and maintenance of BMPs, as well as timely revisions to the Site Specific Records. 1.2 SWMP Administrator The SWMP Administrator is responsible for the process of developing, implementing, maintaining, and revising this SWMP as well as serving as the comprehensive point of contact for all aspects of the facility's SWMP. SWMP Administrators: • E&P Sites: Terry Gosney, Regional Environmental Coordinator 2717 County Road 215, Suite 100, Parachute, CO 81635 (97n) 2.85-2600 • Midstream Services: Brad Ankrum, Piceance Midstream Operations Manager 2717 County Road 215, Suite 100, Parachute, CO 81635 (970) 285-2600 11:1Data\Stormwater Permits\Mamm Creek SWMPUAamm Creek SWMP (East Dry Hallow Loop) 021808.doc 1-2 Revised February 2008 2.0 Narrative Description of Master SWMP Permit Coverage Area Name of Permit Coverage Area: Mamm Creek Unit Permit Number: COR -034840 Location of the Permit Coverage Area: • County: Garfield and Mesa County. • City: Located in Colorado approximately 1 mile south of Rifle and south of the Colorado River within the southern portion of the Piceance Basin. • Township/Section/Range: Township 6S, 7S, & 8S, Range 92W, 93W, & 94W, portions or all of 113 sections, Sixth Principal Meridian. Activities at the Permit Coverage Area will likely involve the construction of: • Well pads • Access roads • Pipelines • Compressor stations • Water Treatment Facility • Fresh Water Storage Pond • Evaporation Facility The above construction activities are only typical and may vary once construction begins. Up-to-date information on the construction of well pads, roads, pipelines, etc. will be kept with the Site Specific Records (Volume 2 of the Master SWMP). 2.1 Sequence of Major Activities Site specific, scheduling, surface use agreements, and/or other constraints can and/or may dictate changes in construction sequences. Significant sequence changes are addressed in the Site Specific Records (Volume 2 of the Master SWMP). Specific details on the construction and maintenance of BMPs mentioned below are provided in the Stormwater Manual of Best Management Practices (BMP Manual) as discussed in Section 3.3. 2.1.1 Well Pads and Roads Construction activities for well pads and roads are generally completed in the following sequence: Preconstruction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. 2. Temporary BMP's. Where physical access is available, installation of terminal perimeter and temporary sediment controls, such as wattles, silt fence and/or other as necessary. Actual BMPs used for each site are shown on the Site Plans (discussed in Section 2.8) and kept with the Site Specific Records (Volume 2 of the Master SWMP). Construction: H \Data\Stormwater Permitswamm Creek SWMP1Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-1 Revised February 2008 3. Vegetation Clearing. Vegetation will be cleared/grubbed and placed along the perimeter at the terminal discharge edges/points in a windrow and/or dam beyond the edge of excavation and at any run -on -protection discharge points, and/or chipped or other depending on landowner requirements. 4. Diversions and Retention Reservoirs. After vegetation clearing and prior to topsoil stockpiling, diversions are to be placed for run -on -protection (ROP) to prevent the greater landscape from discharging onto the planned disturbance. Temporary sediment control BMPs shall be placed at the discharge points of the ROP until permanent erosion controls can be installed along the entire length of the ROP. Diversions are to be installed along the terminal discharge edge inside of the vegetation windrows to convey site water/sediment to terminal discharge points where rough retention reservoirs are to be installed. The retention reservoir outlets are to receive temporary sediment control BMPs until permanent retention reservoirs and erosion, drainage, and sediment BMPs can be installed. 5. Topsoil Stripping/Conservation. All ACCESSIBLE TOPSOIL is to be removed from areas that are to be excavated, covered in subsoils, or turned into stabilized unpaved surfaces. If initial topsoil stockpile areas are insufficient to accommodate the quantities of topsoil being generated, the excess is to be placed at either end of the subsoil stockpile and segregated as much as possible. After major earthwork, grading, and erosion/drainage/sediment controls are complete, any areas that can be identified for immediate interim reclamation shall receive topsoil. 6. General Rough Grading. The site location will be graded to provide suitable surfaces for vehicle traffic and/or building sites, and may be graded to establish surface drainage patterns, such as berms or roadside ditches as necessary. 7. Facility Specific Grading. Individual facilities may require additional excavation to allow for construction of foundations. Excess soil will typically be used in general site grading. 8. Foundation Construction. To support facilities (such as tanks, processing equipment, etc), foundations will be constructed. Foundations may consist of select backfill, concrete spread footings, or piles. Finished support elevations are to be installed twelve to eighteen inches (12-18") above finished grade or the lowest point of the facility. 9. Facility Construction. Tanks, processing equipment, etc. will be constructed. Interim Reclamation: 10. Gravel Surfacing. Areas used for access, parking, or materials staging will typically be gravel surfaced. 11. Reclamation of Unused Areas. Areas not needed for facilities, roads, parking, or materials staging will generally be reclaimed. Salvaged topsoil will be spread and the vegetative seed mix will be applied. 12. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage crossings) additional measures may be applied to increase stability of the reclaimed area. Final Reclamation: 13. Reclamation of Post -Operation Areas. When operation of well pad or road is no longer necessary, the area will be decommissioned and all newly disturbed areas will be reclaimed. Any remaining topsoil will be spread and the vegetative seed mix will be applied. This may occur after termination of this permit and under the coverage of a new construction permit. 2.1.2 Pipelines Construction activities for pipelines are generally completed in the following sequence: Preconstruction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. H:\Data\Stormwater Permits4Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-2 Revised February 2008 2. Mark Right -Of -Way. The construction right-of-way (ROW) will be marked prior to construction with laths and/or flagging. Laths/flagging will be maintained throughout construction and will not be removed until after reclamation activities have been completed. 3. Temporary BMPs. EnCana's stormwater inspectors will determine locations to install preconstruction temporary erosion control devices, per site specific BMP installation plans and as necessary. EnCana's contractor will maintain the erosion control structures as directed by the stormwater inspectors throughout all phases of construction, or until permanent erosion control measures are installed. Actual BMPs used for each site are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Construction: 4. Vegetation Clearing. If necessary, vegetation will be cleared and placed in a windrow at the edge of the work area to be used later in reclamation activities, removed from the construction site, or burned/chipped depending on landowner requirements. Details for windrows are provided within the Stockpiling BMP of the BMP Manual (discussed in Section 3.3). 5. Topsoil Stripping. All ACCESSIBLE TOPSOIL (from the entire width of the right-of-way) will be removed and temporarily stockpiled along the up -hill side of the right-of-way (if terrain grades will allow) for later use in reclamation activities. 6. General Grading. For pipeline segments that occur in relatively rough terrain, general grading will be conducted to create a safe and workable ground surface. This is generally done to form a relatively level work surface on steep cross slopes and to reduce slopes in undulating terrain (arroyo and wash crossings). The site location will be graded to provide suitable surfaces for vehicle traffic and/or building sites, and may be graded to establish surface drainage patterns, such as berms or roadside ditches as necessary. 7. Trench Excavation. The trench needed for pipeline installation is almost always off -set in the ROW. The surveyors may indicate the location of the trench on their pipeline lateral. Generally, the trench will be located in the first third of the ROW. The remaining two thirds of the ROW will be used for working space. The trench depth and width will vary with the number of pipes to be installed and the pipe diameter. Generally, a 4 -foot deep trench will be excavated by track -mounted excavators. The ditch will be excavated and sloped in accordance with OSHA specifications. The cover from top of pipe to ground level will be a minimum of 36 inches. Where rock is encountered, tractor -mounted mechanical rippers or rock trenching equipment may be used to facilitate excavation. The trench will be excavated and subsoil material stockpiled within the confines of the approved right-of-way limits. Trench spoil will be stored in a separate location from the previously segregated topsoil. 8. Pipe Installation. Pipe installation will include stringing, bending for horizontal or vertical angles in the alignment, welding the pipe segments together, coating the joint areas to prevent corrosion, and then lowering -in and padding. 9. Stringing. Pipe will be hauled by truck to the pipeline ROW. Each joint of pipe will be unloaded and placed parallel to the ditch. 10. Bending. After the joints of pipe are strung along the ditch, individual joints of pipe may need to be bent to accommodate horizontal and vertical changes in direction. Field bends will be made utilizing a hydraulically operated bending machine. Where the deflection of a bend exceeds the allowable limits for a field -bent pipe, factory (induction) bends will be installed. 11. Welding. After the pipe joints are bent, the pipe is lined up end-to-end and clamped into position. The pipe is then welded in conformance with 49 CFR Part 192, Subpart E. "Welding of Steel Pipelines" and API 1104, "Standard for Welding Pipelines and Related Facilities". 12. Welding Inspection. Welds will be visually inspected by a qualified inspector. Any defects will be repaired or cut out as required under the specified regulations and standards. 13. Coating. To prevent corrosion, the pipe will be externally coated with fusion bonded epoxy coating prior to delivery. After welding, field joints will be coated with fusion bond epoxy coating, tape and H:\Data\Slormwater Permits'Mamm Creek SWMPWamm Creek SWMP (East Dry Hallow Loop) 021808.dac 2-3 Revised February 2008 primer, or shrink sleeves. Before the pipe is lowered into the ditch, the pipeline coating will be visually inspected and tested with an electronic detector, and any faults or scratches will be repaired. 14. Lowering -In and Padding. Once the pipe coating operation has been completed, a section of the pipe will be lowered into the ditch. Side -boom tractors may be used to simultaneously lift the pipe, position it over the ditch, and lower it in place. Inspection will be conducted to verify: that minimum cover is provided; the trench bottom is free of rocks, debris, etc.; external pipe coating is not damaged; and the pipe is properly fitted and installed into the ditch. Specialized padding machines will be used to sift soil fines from the excavated subsoil to provide rock -free pipeline padding and bedding. In rocky areas, padding material or a rock shield will be used to protect the pipe. Topsoil will not be used to pad the pipe. At the completion of lowering -in and padding activities the contractor may install trench breakers around the pipelines to minimize subsurface water flow. Details for trench breakers are provided-withirrthe-BMP Manualtdiscussed-in Sectiorr33r— — — 15. Backfilling. Backfilling will begin after a section of the pipe has been successfully placed in the ditch and final inspection has been completed. Backfilling will be conducted using a bulldozer, rotary auger backfill, padding machine or other suitable equipment. Backfilling the trench will use the subsoil previously excavated from the trench. Backfill will be graded and compacted, where necessary for ground stability, by being tamped or walked in with a wheeled or track vehicle. Compaction will be performed to the extent that there are no voids in the trench. Any excavated materials or materials unfit for backfill will be utilized or properly disposed of in conformance with applicable laws or regulations. 16. General Grading. If general grading was conducted to facilitate pipeline construction, these materials will be replaced and graded to recreate the preconstruction topography. Final Rectama on: 17. Cleanup. Cleanup activities will be initiated as soon as practicable after backfilling activities have been completed. All construction -related debris will be removed and disposed of at an approved disposal facility. 18. Subsoil and Topsoil Placement. Subsoil will be evenly re-contoured across the right-of-way to pre -construction conditions. After the subsoil has been re -spread the contractor will spread the previously segregated topsoil back across the right-of-way. The topsoil will be evenly spread to original contours. 19. Vegetation. After any remaining topsoil is spread, the vegetative seed mix will be applied. The area will be revegetated according to private landowner Surface Use Agreements and/or according to the BLM/Forest Service reclamation requirements. Details for revegetation are provided within the BMP Manual (discussed in Section 3.3) and the Revegetation Manual (provided as Appendix B). 20. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage crossings) additional measures may be applied to increase stability of the reclaimed area. Possible erosion stabilization methods are provided within the BMP Manual (discussed in Section 3.3). Actual locations and measures used are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). 2.1.3 Compressor Stations, Treatment Facilities, or Other Facilities. Construction activities for compressor stations, treatment facilities, and other facilities are generally completed in the following sequence: Preconstruction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. 2. Temporary BMP's. Where physical access is available, installation of terminal perimeter and temporary sediment controls, such as wattles, silt fence and/or other as necessary. Actual BMPs H:\Data\Stormwater Permits\Mamm Creek SWMP'Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-4 Revised February 2008 used for each site are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Construction: 3. Vegetation Clearing. Vegetation will be cleared/grubbed and placed along the perimeter at the terminal discharge edges/points in a windrow and/or dam beyond the edge of excavation and at any run -on -protection discharge points, and/or chipped or other depending on landowner requirements. 4. Diversions and Retention Reservoirs. After vegetation clearing and prior to topsoil stockpiling, diversion are to be placed for ROP to prevent the greater landscape from discharging onto the planned disturbance. Temporary sediment control BMP's shall be placed at the discharge points of the ROP until permanent erosion controls can be installed along the entire length of the ROP. Diversions are to be installed along the terminal discharge edge inside of the vegetation windrows to convey site water/sediment to terminal discharge points where rough retention reservoirs are to be installed. The retention reservoir outlets are to receive temporary sediment control BMP's until permanent retention reservoirs and erosion, drainage, and sediment BMP's can be installed. 5. Topsoil Stripping/Conservation. All ACCESSIBLE TOPSOIL is to be removed from areas that are to be excavated, covered in subsoils, or turned into stabilized unpaved surfaces. If initial topsoil stockpile areas are insufficient to accommodate the quantities of topsoil being generated, the excess is to be placed at either end of the subsoil stockpile and segregated as much as possible. After major earthwork, grading, and erosion/drainage/sediment controls are complete, any areas that can be identified for immediate interim reclamation shall receive topsoil. 6. General Rough Grading. The site location will be graded to provide suitable surfaces for building sites and vehicle traffic, and may be graded to establish surface drainage patterns, such as berms or roadside ditches as necessary. 7. Excavation. Soil will be excavated to allow for the construction of foundations. Trenches will be excavated for all underground piping and conduit. Excess soil will typically be used in general site grading. 8. Foundation Construction. Foundations will be constructed to support facility buildings. Foundations may consist of select backfill, concrete spread footings, piles, etc. Finished support elevations are to be installed twelve to eighteen inches (12-18") above finished grade or the lowest point of the facility. 9. Facility Construction. Buildings, tanks, processing equipment, etc. will be constructed. Utilities will be installed. Interim Reclamation: 10. Landscaping. If necessary, certain areas will be spread with topsoil and landscaped. 11. Gravel Surfacing. Areas used for access, parking, or materials staging will typically be gravel surfaced. 12. Reclamation of Unused Areas. Areas not needed for facilities, roads, parking, or materials staging will generally be reclaimed. Salvaged topsoil will be spread and the vegetative seed mix will be applied. 13. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage crossings) additional measures may be applied to increase stability of the reclaimed area. Possible erosion stabilization methods are provided within the BMP Manual (discussed in Section 3.3). Actual locations and measures used are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Final Reclamation: 14. Reclamation of Closed Facilities. When facilities are no longer necessary, the buildings may be demolished, according to approved procedures. All construction materials will be removed and the newly disturbed areas will be reclaimed. Any remaining topsoil will be spread and the vegetative seed H:IData\Stormwater Permits'Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-5 Revised February 2008 mix will be applied. This may occur after termination of this permit and under the coverage of a new construction permit. 2.2 Area Estimates The Permit Coverage Area encompasses portions or all of 113 sections of surface land (approximately 72,273 acres) in Township 6, 7, and 8 South, Range 92, 93, and 94 West. Development of the natural gas resource and related facilities within the area is estimated to result in a total disturbance area of 999+ acres. Because the area will vary over time, these are only approximate estimates. This information is used to help determine the extent of control measures (BMPs) needed. 2-3— - Description-of-Existing--Topographyand-Soils The Permit Coverage Area consists of relatively flat mesas and ridge crests, alluvial terraces, steep slopes, mountainsides, intermittent drainage swells, and valley bottoms. The Mamm Creek Unit is located south of the Colorado River, within the southern portion of the Piceance Basin. The Piceance Basin is a broad, asymmetric, southeast -northwest trending structural basin that contains sedimentary rocks up to 20,000 feet thick and lies between the White River uplift to the northeast, the Gunnison uplift to the south, and the Uncompahgre swell to the west (George 1927; Weiner and Haun 1960). Elevations within the Permit Coverage Area range from approximately 5,000 feet above mean sea level (amsl) along the Colorado River to 8,900 feet on Grass Mesa near the western edge of the unit area. Annual precipitation within the Permit Coverage Area ranges from 10 to 40 inches. Soils surrounding the Permit Coverage Area are distributed according to the major soil forming factors including climate (effective moisture and temperature), parent material, topographic position, and slope. The soils table within Appendix C provides a summary of the soil types found within the Permit Coverage Area (including permeability, available water capacity, surface runoff, erosion hazard, and others). Most of these soil types are considered to possess moderate to very severe potential for water erosion. 2.4 Description of Existing Vegetation The existing percent vegetative ground cover for each well pad, section of roadway/pipeline, etc. within the Permit Coverage Area is estimated on each inspection and maintenance report form (discussed in Section 5.4), which are kept with the Site Specific Records (Volume 2 of the Master SWMP). The primary vegetation types in the Mamm Creek Unit are sagebrush shrublands (Artemisia tridentate), pinyon -juniper woodlands (Pinus edulis-Juniperus osteosperma), and Gambel oak shrublands (Quercus gambelii). A small amount of aspen is present at the southern and eastern edge of the Project Area. The riparian vegetation includes narrowleaf cottonwood (Populus angustifolia), mountain maple (Acer glabrum), river birch (Betula occidentalis), alder (Alnus incana spp. tenuifolia), dogwood (Cornus sereciea), and Woods' rose (Rosa woodsii). Snowberry occurs in the shrublayer, and orange sneezeweed (Dugaldia hoopesii), tailcup lupine (Lupinus caudatus), field horsetail (Equisetum arvense), American vetch (Vicia americana), orchardgrass (Dactylis gloverata), northern bedstraw, geranium (Geranium caespitosum), and yarrow (Achillea lanulosa) occur in the understory. Further to the southwest, numerous blue spruce (Picea pungens) occur along the creek (BLM 2005). Vegetation within the Grass Mesa area primarily consists of hillsides dominated by pinyon -juniper woodlands (Juniperus osteosperma and Pinus edulis) and the mesa top dominated by mixed mountain shrubs, mostly big sagebrush (Artemisia tridentata), Gambel oak (Quercus gambelii), and serviceberry (Amelanchier alnifolia). Several of the proposed locations fall within areas dominated by sagebrush -steppe. Herbaceous and succulent species commonly found in the project area include arrow -leaf balsamroot (Balsamorhiza sagittata), prickly pear cactus (Opuntia polyacantha), prairie lupine (Lupinus wyethii), orange globemallow (Sphaeralcea munroana), and several species of penstemon (Penstemon spp.) and paintbrush (Castilleja spp.) (BLM 2004). H:\Data\Stormwater Permits\Mamm Creek $WMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-6 Revised February 2008 The entire Mamm Creek Unit has, to some extent, been affected by cheatgrass (downy brome) (Bromus tectorum) (see Invasive, Non -Native Species). It is often associated with sagebrush communities and disturbed areas, especially two -track roads. In the pinyon/juniper woodlands, this species may be found as the understory. Stressed by the recent drought, many pinyon pine trees in the Colorado Plateau have succumbed to an engraver beetle (Ips confusus) infestation. However, in the Mamm Creek Unit, the scattered pinyon pine trees have shown few signs of infestation. 2.5 Identification of Potential Pollution Sources Potential sources of pollution are associated with all phases of the project from the start of construction though interim reclamation and up until final stabilization has occurred. Final stabilization occurs when construction activities have been completed and all disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with a density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. The most common source of pollution during construction is sediment resulting from the erosion of recently cleared and/or graded areas, such as cut/fill slopes and soil stockpiles. However, there may be many potential pollution sources at any given site. The following types of conditions that might affect the potential for a pollutant source to contribute pollutants to stormwater (CDPHE, 20076) shall be evaluated: • The frequency of the activity (l.e., does it occur every day or just once a month? can it be scheduled to occur only during dry weather?); • Characteristics of the area where the activity takes place (i.e., surface type (pavement, gravel, vegetation, etc.), physical characteristics [site gradients, slope lengths, etc.]); • Ability of primary and secondary containment (fuel tanks, drum storage, etc.) at product storage and loading/unloading facilities to prevent and contain spills and leaks; • Proximity of product storage and loading/unloading facilities to waterways or drainage facilities; • Concentration and toxicity of materials which may to be found in the site's stormwater runoff; and • Contamination of storage facilities/containment with stored materials (i.e., used oil drums or tanks coated with spilled oil). The following items are potential sources of pollutants at the Mamm Creek Unit. Each of the potential sources of pollutants will be controlled using one or more of the following types of BMPs: Erosion Controls, Drainage Controls, Sediment Controls or Non-Stormwater Controls. Descriptions and details for each of these types of BMPs are provided in the BMP Manual (discussed in Section 3.3). Actual BMPs used at each site are shown on the Site Plans (discussed in Section 5.4). Construction: • All Disturbed and Stored Soils: Erosion Controls, Drainage Controls, Sediment Controls. • Vehicle Tracking of Sediments: Sediment Controls, Non-Stormwater Controls. • Management of Contaminated Soils: Non-Stormwater Controls. • Loading and Unloading Operations: Non-Stormwater Controls. • Outdoor Storage Activities (Building Materials, Fertilizers, Chemicals, etc.): Non-Stormwater Controls. • Vehicle and Equipment Maintenance and Fueling: Non-Stormwater Controls. H:\Data\Stormwater Permits\Mamm Creek SWMP Mamm 2-7 Creek SWMP (East Dry Hallow Loop) 021808.doc Revised February 2008 • Significant Dust or Particulate Generating Processes: Non-Stormwater Controls. • Routine Maintenance Activities Involving Fertilizers, Pesticides, Detergents, Fuels, Solvents, Oils, etc.: Non-Stormwater Controls. • On -Site Waste Management Practices (Waste Piles, Liquid Wastes, Dumpsters, etc.): Non-Stormwater Controls. • Concrete Truck/Equipment Washing, Including the Concrete Truck Chute and Associated Fixtures and Equipment: Non-Stormwater Controls. • Dedicated Asphalt and Concrete Batch Plants: There will be no asphalt or concrete batch plants located within the Permit Coverage Area of this SWMP. • Non -Industrial Waste Sources Such as Worker Trash and Portable Toilets: Non-Stormwater Controls. interim/Final Reclamation: • All Disturbed and Stored Soils: Erosion Controls, Drainage Controls, Sediment Controls. • Vehicle Tracking of Sediments: Sediment Controls, Non-Stormwater Controls. • Vehicle and Equipment Maintenance and Fueling: Non-Stormwater Controls. • Significant Dust or Particulate Generating Processes: Non-Stormwater Controls. • Non -Industrial Waste Sources such as Worker Trash and Portable Toilets: Non-Stormwater Controls. 2.6 Allowable Sources of Non-Stormwater Discharge Allowable sources of non-stormwater discharge within the Permit Coverage Area include the following: • Uncontaminated Springs. Although there are several springs within the Permit Coverage Areas, none of these springs are currently located in areas where soil disturbance will occur. If this changes in the future, the controls used at any such location will be noted with the Site Specific Records. • Landscape Irrigation Return Flow. There are several locations where pipelines cross through irrigated fields. These locations will be treated similarly to any water crossing with the use of an appropriate control which will be noted in the Site Specific Records. • Construction Dewatering. Construction dewatering is described and discussed in Section 3.2.5. • Concrete Washout. Concrete washout is described and discussed in Section 3.2.4. • Emergency Fire Fighting Water. Water used to put out any type of fire is considered an allowable source of non-stormwater discharge. No other non-stormwater discharges are allowed under the Stormwater Construction Permit. Other types of non-stormwater discharges must be addressed in a separate permit issued for that discharge. 2.7 Receiving Water Runoff from disturbed areas during construction will be controlled and/or routed through the use of one or more BMPs, as described later in this plan, prior to being discharged to receiving waters. However, it may be expected that runoff from certain areas will infiltrate into the earth and is not expected to contribute to receiving waters. All streams in the Mamm Creek Unit are tributary to the Colorado River. The project area is located in the Mamm Creek watershed, and drained by Gant Gulch, Middle Mamm Creek, and an unnamed tributary to Middle Mamm Creek. Gant Gulch is tributary to West Mamm Creek. These drainages flow to the northeast into the mainstream portion of Mamm Creek. Mamm Creek is a perennial tributary to the Colorado River. H:\Data\Stormwater Permits\Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-8 Revised February 2008 Floodplain habitat occurs along Middle Mamm Creek and East Mamm Creek, which are perennial streams within the Gant Gulch Area. Dry Hollow Creek is also within the Project Area. Riparian habitat is found along the banks of these streams. The riparian vegetation along Middle Mamm creek extends up to 100 feet on either side of the creek. The riparian habitats associated with Middle Mamm, East Mamm and Dry Hollow Creeks, have been determined to be "non-functional" or "functioning at risk" (M. Kinser, BLM, personal communication, September 2005) (BLM 2005). The Grass Mesa area is located within the watersheds of Dry Creek and Ramsey Gulch. Both of these creeks are tributaries to the Colorado River. Stream flows in the drainages within the Grass Mesa area are generally ephemeral and dependent on seasonal storm and snowmelt runoff. Floodplain habitats occur along the intermittent drainages within Dry Creek and Ramsey Gulch but no floodplain habitat would be impacted by the proposed action. Intermittent drainages occur along Dry Creek and Ramsey Gulch. However, no wetland habitats or riparian vegetation have been documented along these drainages (BLM 2004) 2.8 Master SWMP Permit Area Map and Individual Stormwater Site Plans An overall Master SWMP Permit Area Map is provided as Appendix D. This map is likely to change constantly and will be updated at least annually. The Master SWMP Permit Area Map includes: • Contours and elevations (topography) with existing drainage patterns; • Locations and names of major surface waters such as streams, wetlands, irrigation ditches, canals, etc.; • Master SWMP permit area boundaries; • Construction area locations including roads, pipelines, well pads, compressor station facilities, treatment facilities, water parks, and all other facilities. Individual Stormwater Site Plans (Site Plans) of each site (well pad, access road, section of pipeline, etc.) are provided with the Site Specific Records (Volume 2 of the Master SWMP) Separate Site Plans will be developed for each phase of construction: preconstruction, construction, interim reclamation (if applicable), final stabilization (if applicable) and final reclamation (if applicable). These Site Plans include: • Construction site boundaries (this is the area expected to be disturbed by clearing, excavating, grading, or other construction activities); • Contours and elevations (topography) with existing and proposed drainage patterns; • Limits of well pads and locations of reserve pits and well heads (if applicable); • All areas of ground surface disturbance, including areas of cut and fill; • Locations of all potential pollutant sources listed in Section 2.5 (including areas used for vehicle fueling, the storage of materials, equipment, soil, or waste, etc...); • Locations of all minor surface waters and all anticipated allowable sources of non-stormwater discharge (including springs, dewatering, concrete washout, etc...); • Locations of all existing and planned BMPs (including erosion, drainage, and sediment controls); • Locations, names, distances to streams, wetlands, irrigation ditches, canals, other surface waters, etc; • The size, type and location of any outfall(s). If the stormwater discharge is to a municipal separate stormwater system, name that system, the location of the storm sewer discharge, and the ultimate receiving water(s). Figures showing typical BMP locations along roadways and pipelines are provided as part of the BMP Manual (discussed in Section 3.3). H:\Data\Starmwater PermitswMamm Creek SWMP\Mamm 2-9 Revised February 2008 Creek SWMP (East Dry Hallow Loop) 021808.doc 3.0 Best Management Practices (BMPs) A key component of this Master SWMP is employing BMPs to improve stormwater quality. Local factors will be evaluated to determine what BMPs are suitable and practical at different locations. BMPs will be employed in different combinations during construction activities and phases as conditions warrant. Due to the fact that this Master SWMP is likely to cover more than one ecosystem (as described in Section 2.4), the selection of BMPs (including type, quantity, sequence/combination, etc.) will vary at each site within the Master SWMP Permit Area. Specific BMPs to be employed at each well pad, road, pipeline, or other facility are identified on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). 3.1 Erosion, Drainage, and Sediment Control BMPs The primary method for controlling erosion, drainage, and sediment transport consists of minimizing initial disturbance of the soil and ground cover. However, many other methods can also be used. All stormwater- related BMPs will fall under at least one of the following three types of controls: • Erosion Control. Any source control practice that protects the soil surface and/or strengthens the subsurface in order to prevent soil particles from being detached by rain or wind, thus controlling raindrop, sheet, and/or rill erosion. • Runoff Control. Any practice that reduces or eliminates gully, channel, and stream erosion by minimizing, diverting, or conveying runoff. • Sediment Control. Any practice that traps the soil particles after they have been detached and moved by wind or water. Sediment control measures are usually passive systems that rely on filtering or settling the particles out of the water or wind that is transporting them prior to leaving the site boundary. BMPs may also be classified as either structural or non-structural controls: • Structural Control. Handles sediment -laden stormwater prior to it leaving each site. Structural BMPs are used to delay, capture, store, treat, or infiltrate stormwater runoff. Some examples of structural BMPs include sediment traps, diversions, and silt fences. Most Runoff Controls and Sediment Controls can also be classified as Structural Controls. • Non-structural Control. Reduces the generation and accumulation of pollutants, including sediment, from a construction site by stabilizing disturbed areas and preventing the occurrence of erosion. Some examples of non-structural BMPs include revegetation, mulching, and surface roughening. These types of stabilization techniques are not only the most effective method for reducing soil loss, but they are also normally the most cost effective due to low initial cost and reduced maintenance requirements. Most, but not all, Erosion Controls can also be classified as Non-structural Controls. The Site Plans, as mentioned previously and kept with the Site Specific Records (Volume 2 of the Master SWMP), show the proposed locations of all erosion, drainage, and sediment control BMPs (both structural and non-structural). Detailed descriptions, design criteria, construction specifications, and maintenance information for all BMPs are provided in the BMP Manual (discussed in Section 3.3). 3.2 Non-Stormwater Control BMPs Non-stormwater controls include general site and materials management measures that indirectly aid in the minimization of water pollution. Types of pollution sources include, but are not limited to, litter, oil and grease, hazardous material spills, and sediment. H:Data\Stormwater Permits\Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 3-1 Revised February 2008 3.2.1 Materials Delivery and Storage The good housekeeping practices listed below will be followed on site during construction and operation: • An effort will be made to store only enough product required for task completion. • All materials stored on site will be stored in a neat and orderly manner in appropriate containers and, where possible, under a roof or other enclosure, and/or within secondary containment areas to avoid contact with stormwater. • Products will be kept in their original containers with the original manufacturer's label. • Substances will not be mixed with one another unless recommended by the manufacturer. • Whenever possible, all of the product will be used before disposing of the container. • Manufacturer's recommendations for proper use and disposal will be followed. Additional information on material delivery and storage is available in the BMP Manual (discussed in Section 3.3). 3.2.2 Material Handling and Spill Prevention In addition to the material storage practices (listed in the previous section) that will be used to reduce the risk of spills or other accidental exposure of materials and substance, the BMP Manual (discussed in Section 3.3) will provide more detailed information on spill prevention and control. Furthermore, the Spill Prevention, Control and Countermeasure (SPCC) Plan will be followed for the control of hydrocarbons. In general, spill prevention and response procedures will include notification (CDPHE 24-hour spill reporting line — 877-518- 5608), clean-up with the use of spill kits and absorbents, and ensuring that materials and wash water can not discharge from the site, and never into a storm drain system or stream. 3.2.3 Vehicle Cleaning, Fueling, Maintenance, and Tracking Controls As required by EnCana Oil & Gas (USA), Inc. master service agreement(s) and drilling contract(s), contracting companies and/or vendors are required to service all vehicles and equipment prior to entering EnCana facilities. However, in the event maintenance procedures are required at EnCana facilities, all fluids transferred must utilize secondary containment and drip pans to minimize a release of materials and properly dispose or recycle spent materials in compliance with local, state, and federal guidelines. While on site, equipment will be parked, serviced, and fueled within designated areas. Equipment fueling on pipeline rights-of-way will be mobile during active construction. Periodic inspections of equipment and control procedures will be implemented. Selected equipment may be fueled in place using fuel trucks. When necessary, equipment and machinery will be decontaminated at an on-site decontamination area prior to removal from the construction area. Areas will be provided with adequate waste disposal receptacles for liquid as well as solid waste. Vehicle tracking of sediments is not expected to be a problem due to construction scheduling. Construction vehicles will remain on site throughout earth -moving activities. All other vehicles remain in stabilized areas and do not enter the construction area until that area is stabilized. However, applicable BMPs (such as scheduling (to minimize site access), stabilized construction entrances, vehicle cleaning, etc.) will be utilized if sediment tracking does become a problem. In addition to the typical practices listed above, the BMP Manual (discussed in Section 3.3) provides more detailed information on vehicle cleaning, fueling, maintenance, and tracking controls. H:\Data\Stormwater PermitsWamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 3-2 Revised February 2008 3.2.4 Waste Management and Disposal As required by EnCana Oil & Gas (USA), Inc. master service agreement(s) and drilling contract(s), contracting companies and/or vendors are required to manage all waste generated by their activities at EnCana facilities in compliance with local, state, and federal guidelines. EnCana Oil & Gas (USA) utilizes a periodic inspection program to ensure waste management requirements are fulfilled and inspections are documented. A few of the waste management procedures that will be followed include the following: • Proper bins will be provided for trash collection and disposal in compliance with local, state, and federal guidelines. • Contaminated soils will be placed into a lined and bermed area. Samples of the impacted soil will be collected and a complete characterization analysis will be performed. When applicable, the impacted soil will be sent to a licensed disposal facility. • The contractor will provide portable toilets. Sanitary waste will be regularly collected by a licensed sanitary waste management contractor and disposed of in an approved manner. • In the event that sediment is inadvertently transported off the construction site, it will be collected and returned to the site and placed on the soil stockpile or spread over the construction pad area and compacted. On well pads and access roads concrete washout is used as an interior conductor pipe ballast. Concrete washout water can NOT be discharged to surface waters or to storm sewer systems without separate permit coverage. However, discharge to the ground of concrete washout water from washing of tools and concrete mixer chutes may be authorized by this permit, provided that (CDPHE, 2007a): 1. The source is identified in the SWMP; 2. BMPs are included in the SWMP to prevent pollution of groundwater; and 3. These discharges do not leave the site as surface runoff or to surface waters. Locations where concrete washout activities take place are shown on the Site Plans. Additional waste management procedures, including solid waste, hazardous waste, contaminated soil, concrete washout, and septic and sanitary waste, are included in the BMP Manual (discussed in Section 3.3). 3.2.5 Dewatering Dewatering refers to the mechanical removal of water from an excavation or other structure. Both groundwater and stormwater may require dewatering during construction. Dewatering of pipelines at the completion of hydrostatic testing will be required for most pipeline installations. 3.2.5.1 Groundwater Dewatering Groundwater is very rarely encountered during the construction activities associated with either E&P sites or Midstream Services sites. If groundwater is encountered, it is typically during construction of a pipeline across a stream crossing. These pipelines are either bored under the stream or a flume is utilized. Non-stormwater construction dewatering of groundwater can NOT be discharged to surface waters or to storm sewer systems without separate permit coverage. However, discharges to the ground of water from construction dewatering activities may be authorized by this permit, provided that (CDPHE, 2007a): H:\Data\Stormwater Permits\Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 3-3 Revised February 2008 1. The source is groundwater and/or groundwater combined with stormwater that does not contain pollutants in concentrations exceeding the State groundwater standards in Regulations 5 CCR 1002-41 and 42; 2. The source is identified in the SWMP; 3. BMPs are included in the SWMP; and 4. These discharges do not leave the site as surface runoff or to surface waters. Dewatered groundwater shall be pumped or diverted to a sediment control BMP prior to discharge to the ground. Locations of groundwater dewatering, as well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs. Additional information on groundwater dewatering is provided in the BMP Manual, discussed in Section 3.3. 3.2.5.2 Stormwater Dewatering The discharge of pumped stormwater (not including groundwater or other non-stormwater sources) from excavations, ponds, depressions, etc., to surface water, or to a municipal separate storm -sewer system is allowed by the Stormwater Construction Permit, as long as the dewatering activity and associated BMPs are identified in the SWMP (including location of the activity), and BMPs are implemented in accordance with the BMP Manual, discussed in Section 3.3 (CDPHE, 2007c). Stormwater that collects in open depressions or trenches during construction activities will be dewatered into an existing sediment control, such as a detention pond, a sediment trap, or simply into a well -vegetated area to percolate into the ground and catch suspended sediment. The quality, source, and location of dewatering, as well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs. Additional information on stormwater dewatering is provided in the BMP Manual, discussed in Section 3.3. 3.2.5.3 Pipeline Dewatering New Department of Transportation (DOT) pipelines are hydrostatically tested with water upon completion of construction. Once the hydrostatic testing has been completed, dewatering of the pipeline must occur. This will involve the insertion of a displacer, commonly referred to as a pig, in the pipeline. The discharge rate will be regulated, and energy dissipation devices, and/or sediment controls will be used, as necessary, to prevent erosion, streambed scour, suspension of sediments, or excessive streamflow. Locations on pipeline dewatering, as well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs. Additional information on stormwater dewatering is provided in the BMP Manual, discussed in Section 3.3. 3.3 Stormwater Manual of BMPs A Stormwater Manual of Best Management Practices (BMP Manual) is provided as Appendix E. The BMP Manual has been prepared to provide EnCana personnel, contractors, and subcontractors with information on the proper selection, design, installation, and maintenance of BMPs to manage oil and gas related stormwater and to meet federal and state SWMP implementation requirements. The main objectives of the BMP manual are to: • Serve as an easy-to-use guide for selecting, designing, installing, and maintaining BMPs. • Function as a reference for construction plans and specifications. • Ultimately lead to the avoidance of any net increase in off-site erosion and sedimentation of waters of the U.S. The BMPs within this BMP Manual are organized into four main types of controls for easy reference: Erosion Controls, Runoff Controls, Sediment Controls, and Non-stormwater Controls. Each of these types of controls has been discussed earlier in this section of the SWMP. H:DatatStormwater PermitsWamm Creek SWMPWamm Creek SWMP (East Dry Hallow Loop) 021808 doc 3-4 Revised February 2008 3.4 Phased BMP Implementation Various BMPs will be implemented and maintained during different phases of the project. A description of each phase is as follows: • Preconstruction. The preconstruction phase involves the installation of BMPs (temporary and/or permanent) around each site perimeter and at discharge points (such as vegetation buffers (no installation required for this BMP), slash, wattles, diversions, sediment basins and reservoirs, etc...). • Construction. The construction phase involves the stripping and stockpiling of topsoil, the excavation and backfill for access roads, pipelines, and well pads, and the installation of additional BMPs (preferably permanent BMPs) to control erosion and sedimentation (such as tracking topsoil piles and the installation of roadside channels, culverts, diversions, etc...). • interim Reclamation. The interim reclamation phase primarily involves seeding of all disturbed areas not needed during operation of the well pads. However, this phase also involves the installation of any additional permanent BMPs that may be needed, as well as the continued maintenance and inspections of all BMPs until final stabilization occurs. Final stabilization occurs once all surfaces are built on, paved or graveled, and/or a uniform stabilized vegetative cover with a density of 70 percent of pre -disturbance levels has been established or when an equivalent permanent, physical erosion reduction method has been employed. A further explanation of final stabilization is provided as section 4 of this plan. • Final Reclamation. For pipelines, this phase involves seeding of all disturbed areas, and the installation of any additional permanent BMPs that may be needed, as well as the continued maintenance and inspections of all BMPs until final stabilization occurs. For other areas (roads, well pads, facilities, etc...), this phase (which may occur after termination of this permit and under the coverage of a new construction permit) occurs when operation of the area is no longer necessary. In these cases, this phase will include the installation of any additional BMPs required during facility decommissioning as well as the spreading of any remaining topsoil, the application of seed, and the inspection/maintenance of all BMPs until final stabilization occurs. Temporary controls, such as silt fencing, may be used to control sediment and erosion during preconstruction and construction activities. Permanent controls, such as diversions and sediment traps, may also be used during the initial phases of the project. However only permanent controls will be used during interim reclamation and final stabilization. Temporary controls may be converted into permanent controls (such as revegetating a diversion) if needed. The primary control used during interim and final stabilization will be revegetation. Seeding will occur as soon as possible after disturbance of an area is complete. If the seeding is not successful, the area will either be reseeded or other controls will be put in place until reseeding can occur. H:\Data\Stormwater PermitslMamm Creek SWMPWamm Creek SWMP (East Dry Hallow Loop) 021808.doc 3-5 Revised February 2008 4.0 Interim Reclamation and Final Stabilization As soon as practicable after construction activities have been completed in a disturbed area, interim (for well pads, or other facilities) or final (for roads and pipelines) reclamation will be started to prevent further erosion of soil from that area. This typically occurs immediately upon completion of earthwork activities. All disturbed areas (except for the surface of dirt roads, those portions covered by pavement or a structure, and those areas used during operation of a well) will be stabilized with permanent controls. The most common measure used to achieve final stabilization is revegetation. Mulching, erosion control blankets, surfacing with gravel or slash, and/or other methods may also be used. Structural controls (such as diversions, berms, and sediment traps) may be revegetated and used as permanent measures to control pollutants in stormwater discharges that will occur after construction operations have been completed. Appendix E includes detailed information on each of the previously discussed BMPs. In addition, a revegetation manual is provided as Appendix B, which provides guidance as to possible methods and materials needed to accomplish revegetation on differing site conditions. The specific BMPs used at each site are shown on the Site Plans which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Final stabilization means that all ground surface disturbing activities at the site have been completed, and all disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. For purposes of this permit, establishment of a vegetative cover capable of providing erosion control equivalent to pre-existing conditions at the site will be considered final stabilization. Areas developed as stabilized unpaved surfaces as needed for operation of the facility after interim reclamation, will also qualify as "finally stabilized." This includes dirt road surfaces and the portions of the well pad surfaces that cannot be revegetated due to operational necessity, but does not include slopes, ditches, and other areas where revegetation is necessary. Stabilized unpaved surfaces will be prepared in such a way as to prevent ongoing erosion issues. Coverage under the Stormwater Construction Permit may be inactivated for any individual site or a portion/section of that site (i.e. the access road to a well pad) when the area has attained final stabilization and all temporary erosion and sediment control measures associated with that area have been removed. An area will be considered finally stabilized when construction and interim reclamation is complete and when the above final stabilization criteria have been met, even though the site may be disturbed again in the future for final reclamation. However, future land disturbances that follow final stabilization and result in disturbance of one acre or greater (such as final reclamation) will require new permit coverage at that time. Upon final stabilization of any site or portion/section of a site, a signed certification sheet (provided in Appendix F) will be placed into the Site Specific Records binder to replace the Site Plans and the inspection and maintenance records for that area. However, the Site Plans and inspection reports shall be retained in a separate location for a period of three years following final stabilization of the Permit Coverage Area. These documents will be made available to WQCD or EPA upon request and at the time of inspection. H:\Data\Stormwaler PermitsWamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.00c 4-1 Revised February 2008 5.0 Inspection and Maintenance Inspections and maintenance is an extremely important part of the Stormwater Construction Permit. The Construction Manager will ensure that all stormwater management controls are constructed or applied in accordance with governing specifications or good engineering practices. Experienced teams will be used for construction. A first inspection will occur upon installation of the controls. In addition, all workers on the site will be trained as to the location and use of the controls, especially those controls that will be disturbed as construction proceeds across the site. The goal is to minimize the potential for inadvertent removal or disturbance of BMPs and to prevent the off site transport of sediment and other pollutants. 5.1 Inspection Schedule Inspections are required as soon as the first soil disturbance occurs at the site. Once final stabilization of the site has occurred and the EnCana inspector has filled out the final stabilization certification sheet (see Section 4), inspections are no longer necessary. Specific information regarding inspection schedules are provided in the following sections. 5.1.1 Minimum Inspection Schedule for active sites The minimum inspection schedule applies to those sites under active construction, which includes the period from when the ground is initially disturbed to when construction activity is completed, and also includes the preparation of areas that will be revegetated for interim reclamation. During the Active Site period, a thorough inspection of the site stnrmuiater management system (which inrL udoe a!! utilized BMPs) must he conducted at least every 14 calendar days. Also, post -storm event inspections must be conducted within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion. There are three exceptions to the minimum inspection schedule which are described in detail within the next three sections: post -storm event inspections at temporarily idle sites (inspections required within 72 hours after a storm), inspections at completed sites (inspections required monthly), and inspections during certain winter conditions (inspections may not be required). Any use of an exception is temporary, and does not eliminate the requirement to perform routine maintenance due to the effects of a storm event or other conditions that may impact BMP performance, including maintaining vehicle tracking controls and removing sediment from impervious areas. Inspections, as described above, are required at all other times. 5.1.2 Post -Storm Event Inspections at Temporarily Idle Sites Temporarily idle sites are those where there are no construction activities occurring following a storm event. At such sites, post -storm event inspections must be conducted prior to restarting construction activities at the site, but no later than 72 hours following the storm event, and the delay noted in the inspection report. Routine inspections still must be conducted at least every 14 calendar days. 5.1.3 Completed Sites Once construction is completed and the site has been prepared for interim or final stabilization (including completion of appropriate soil preparation, amendments and stabilization practices), the site (or portion of the site) is considered a Completed Site (for purposes of the stormwater permit). Note: only construction activities that result in a disturbance of the ground surface must be completed. Construction activities that can be conducted without disturbance of the ground surface, such as certain well completion activities, would not prohibit a site from otherwise qualifying as a Completed Site. (Completed Sites still require permit coverage until the final stabilization criteria have been met) Completed Sites qualify for a reduced inspection schedule, as the potential for pollution is reduced if the site has been adequately prepared and/or seeded. However, because slopes and other disturbed areas may not H:\Data\Stormwater Permits\Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 5-1 Revised February 2008 be fully vegetated, erosion in these areas still occurs which requires maintenance activities such as regrading and seeding of problem areas. As such, inspections must continue in order to address these situations. During the Completed Site period, a thorough inspection of the site stormwater management system (which included all utilized BMPs) is required at least once every month. The SWMP must be amended to indicate those areas that will be inspected at this reduced frequency. 5.1.4 Winter Conditions Inspections Exclusion Inspections are not required at sites where construction activities are temporarily halted, snow cover exists over the entire site for an extended period, and melting conditions posing a risk of soil erosion do not exist. This temporary exclusion is applicable only during the period where melting conditions do not exist, and applies to the routine 14 -day and monthly inspections, as well as the post -storm -event inspections. It is typical that when snow cover exists, even at a Completed Site, significant potential for erosion and BMP failure exists when melting does finally occur. Therefore, the site should prepared prior to snow cover to ensure it is as stabilized as possible, and be prepared to perform site maintenance when melt -off occurs, to alleviate any potential problems. Inspection records (see Section 5.4) will document that winter conditions exist and that inspections will be excluded. 5.2 Performing Inspections Inspections will be conducted by qualified personnel on the following areas: • All vegetated areas until 70% of pre -disturbance vegetation levels are reached. • All BMP measures identified in this document. • Construction site perimeter and discharge points. • All disturbed areas. • Areas used for storage of material/waste that are exposed to precipitation. • Other areas determined to have a significant potential for stormwater pollution, such as demolition areas or concrete washout locations, or locations where vehicles enter or exit the site. These areas will be inspected to determine if there is evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to state waters. All BMPs will be evaluated to determine if they still meet the design and operational criteria in the SWMP and if they continue to adequately control pollutants at the site. Any BMPs not operating in accordance with Appendix E of this SWMP will be addressed as soon as possible, immediately in most cases, to minimize the discharge of pollutants, and the Site Specific Records will be updated. 5.3 Maintenance Maintenance activities will ensure that all control measures are functioning at optimum levels and that all procedures and techniques will be in proper working order during a runoff event or spill condition. Any maintenance, repairs, or replacements deemed necessary after required inspections will be corrected as soon as possible (if not immediately), to minimize the discharge of pollutants. Certain maintenance procedures may take a short period of time to make sure that all the proper safety precautions are in place, such as a "one call" for utilities, if the maintenance involves excavation of sediment located above a buried pipeline. Maintenance will include, but is not limited to: • Pickup or otherwise prevention of litter, construction debris, and construction chemicals from becoming a pollutant source prior to anticipated storm events. • Removal of sediment from silt fences, sediment traps, and other sediment controls. H:\Data\Stormwater Permits\Mamm Creek SWMP\Mamm 5-2 Creek SWMP (East Dry Hallow Loop) 021808.doc Revised February 2008 • Reseeding of any bare spots where vegetation has failed to establish. • Repairs and/or adjustments to any erosion and sediment control that is deteriorating or found to be performing inadequately. Detailed maintenance requirements for each BMP are identified in Appendix E. When maintenance is required, the following process will typically be followed: 1. Perform inspections according to the minimum inspection schedule discussed in Section 5.1. 2. Note the need for maintenance on the inspection and maintenance report form. 3. If necessary, collect the additional materials and/or resources needed to perform the maintenance activity. 4. Perform maintenance and note the date performed on the inspection and maintenance report form. 5. Re -inspect the area to ensure compliance. 5.4 Documenting Inspections and Maintenance The permittee must document inspection results, maintenance activities, and maintain a record of the results for a period of 3 years following expiration or inactivation of permit coverage. A typical inspection and maintenance report form is provided in Appendix G. Although the site may have a phased construction schedule, all construction areas may be inspected at the same time and on one form. Each well pad, road, pipeline, or other facility which is inspected shall be clearly written on the inspection form. Inspection reports will include the following: • Date of inspection, name of inspector, and title of inspector • The area inspected (Site ID), type of area (well pad, access road, pipeline, etc.), phase of construction (preconstruction, construction, etc.), and type of inspection (active, completed, etc.) • Site specific information including disturbed area, soil type(s), ecosystem/vegetation type(s), receiving waters, etc. • Vegetation observations including the percent pre -disturbance vegetation and whether or not vegetation growth has reached 70% of pre -disturbance levels • Specific inspection requirements (all BMPs and areas of potential pollutant sources) • Observed conditions including: — Location(s) of discharges of sediment or other pollutants from the site — Location(s) of BMPs that need to be maintained - Location(s) of BMPs that failed to operate as designed or proved inadequate for a particular location - Location(s) where additional BMPs are needed that were not in place at the time of inspection • Description and date(s) of corrective action(s) taken, and measures taken to prevent future violations • Changes necessary to the SWMP A hand drawn Site Plan shall be included, if necessary, to show the location(s) of any observed condition (as Fisted above). H:\Data\Stormwater Pemiils\Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 5-3 Revised February 2008 After adequate corrective action(s) has been taken and recorded, or where a report does not identify any incidents requiring corrective action, the report will contain a signed statement indicating the site is in compliance with the permit to the best of the signer's knowledge and belief. All completed inspection and maintenance report forms (a blank copy of which is included in Appendix G) are kept with the Site Specific Records (Volume 2 of the Master SWMP). H:1Data1Stormwaler Permits'Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 5-4 Revised February 2008 6.0 Plan Revisions and Retention When BMPs or site conditions change, the Master SWMP (Volume 1) and/or the Site Specific Records (Volume 2) will be amended to accurately reflect the actual field conditions. Examples include, but are not limited to, removal of BMPs, identification of new potential pollutant sources, addition of BMPs, modification of BMP installation/implementation specifications or maintenance procedures, and changes in items included in the Site Plans. Changes to the Master SWMP (Volume 1) shall be noted on the SWMP Revisions log at the front of this plan. Changes to individual site conditions will be noted in the Site Specific Records (Volume 2) on the applicable inspection and maintenance report form. All changes in Volume 1 and Volume 2 shall be made prior to actual -changes -in the site-conditionsyexceptfor responsive SWMP changes, which shall be made -- immediately after changes are made in the field or as soon as practical, but in no case more than 72 hours after the change(s) in BMP installation and/or implementation occur at the site that require development of materials to modify the SWMP. At a minimum, the Master SWMP will be updated annually. The Master SWMP and the Site Specific Records will be retained at the EnCana field office in Parachute during active construction and site inspections to ensure accurate implementation and maintenance of BMPs, and required revisions. These documents will be retained for a period of three years following final stabilization of the Permit Coverage Area. These reports will be made available to WQCD or EPA upon request and at the time of inspection. H:\Data\Stormwater Permits\Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 6-1 Revised February 2008 7.0 Inactivation Notice When all disturbed areas associated with the Stormwater Construction Permit have reached "final stabilization" (as described in Section 4), all temporary erosion and sediment control measures have been removed, and all components of the SWMP are complete, the area no longer requires coverage under the permit terms. At that time, EnCana will submit an Inactivation Notice that closes this permit to the WQCD upon final stabilization of all areas covered by the permit. A blank copy of this form is included in Appendix H of this document. Upon receipt of the Inactivation Notice, the WQCD will provide written confirmation that coverage under this permit has been terminated. This historical documentation will be maintained at the EnCana field office in Parachute for a period of at least three years following termination of permit coverage. H:\Data\Stormwaler Permits\Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 7-1 Revised February 2006 8.0 Signature "1 certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted, to the best of my knowledge and belief, is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment or knowing violations" Brad Ankram Printed name PiceancwMidstrearr Operations Manager Title t/, i/o8 Signature Date Lindsey Kruckenberq South Piceance Midstream Stormwater Inspector Printed name Title -2117 /cF Signature Date H:\Data\Stormwaler Permits\Mamm Creek SWMPWamm Creek SWMP (East Dry Hallow Loop) 021808.doc 8-1 Revised February 2008 9.0 References CDPHE, 2007a. CDPS General Permit, Authorization to Discharge under the Colorado Discharge Permit System. Colorado Department of Public Health and Environment. Water Quality Control Division. Issued May 31, 2007. http://www. cd p h e.state. co. us/wq/Pe rm its U n it/stormwater/S WConstructio n Perm it. pdf CDPHE, 2007b. General Permit Application and Stormwater Management Plan Preparation Guidance. Colorado Department of Public Health and Environment. Water Quality Control Division. Revised July, 2007. http://www.cdphe.state.co.us/wq/PermitsUniUstormwater/SWConstructionApplication.pdf CDPHE, 2007c. Rationale. Colorado Department of Public Health and Environment. Water Quality Control Division. 2007. http://www. cdphe.state.co. us/wq/PermitsUniUstormwater/SWConstruction Rationale. pdf CDPHE, 2007d. Stormwater Fact Sheet — Construction at Oil and Gas Facilities. Colorado Department of Public Health and Environment. Water Quality Control Division. Revised July, 2007. http://www.cdphe.state.co. us/wq/PermitsUnit/stormwater/OGfactsheet. pdf George, R.D. 1927. Geology and Natural Resources of Colorado. University of Colorado, Boulder, CO. Mute!, C.F., and Emerick, J.C., 1992. From Grassland to Glacier - The Natural History of Colorado and the Surrounding Region. U.S. Department of Interior, Bureau of Land Management. 2004. Environmental Assessment of the Grass Mesa Geographic Area Plan. EA# C0140-2004-081 EA. Glenwood Springs Energy Office, Colorado. Online version available at: http://www.blm.gov/co/sUen/fo/gsfo/GSFO MasterPlansOfDevelopment.print.html U.S. Department of Interior, Bureau of Land Management. 2005. Environmental Assessment of the Gant Gulch Geographic Area Plan. EA# C0140-2005-134EA. Glenwood Springs Energy Office, Colorado. Online version available at: http://www.blm.qov/co/sUen/fo/gsfo/GSFO MasterPlansOfDevelopment.print.html USEPA, 1990. NPDES Stormwater Regulations, 40 CFR Parts 122.26. U.S. Environmental Protection Agency. Weiner, R.J., J.D. Haun. 1960. Guide to the Geology of Colorado. Geological Society of America. H:\Data\Stormwater Permits \Mamm Creek SWMP\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc Revised February 2008 STATE OF COLORADO Bill Ritter, Jr., Governor James 8. Martin, Executive Director Dedicated to protecting and improving the health and environment of the people of Colorado 4300 Cherry Creek Dr. S. Denver, Colorado 80246-1530 Phone (303) 692.2000 TDD Line (303) 691-7700 Located in Glendale, Colorado http://www.cdphe.state.co.us June 20, 2007 Laboratory Services Division 8100 Lowry Blvd. Denver, Colorado 80230-6928 (303) 692-3090 Teny C. Gosney, Envir. Coord. EnCana Oil & Gas (USA) Inc., 2717 County Road 215 Ste. 100 Parachute, CO 81635 970/285-2687 RE: Final Permit, Colorado Discharge Permit System — Stormwater Certification No: COR -034840 Mamm Creek Garfield County Local Contact: Teny Gosney, Envir. Coordinator 970/309-8155 Dear Sir or Madam: Colorado Department of Public 1lealth and Environment Enclosed please find a copy of the new permit and certification which have been re -issued to you under the Colorado Water Quality Control Act. Your old permit expires on June 30, 2007. This is a renewal to the permit, and replaces the old one. See page 2 of the Rationale (the pages in italics) for a summary of the changes to the permit. Your Certification under the permit requires that specific actions be performed at designated times. You are legally obligated to comply with all terms and conditions of the permit. Please read the permit and certification. If you have any questions please visit our website at : www.cdphe.state.co.us/wq/permitsunit/stormwater or contact Matt Czahor at (303) 692-3517. Sincerely, Kathryn Dolan Stormwater Program Coordinator Permits Unit WATER QUALITY CONTROL DIVISION xc: Regional Council of Governments Local County Health Department District Engineer, Technical Services, WQCD Permit File STATE OF COLORADO COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT WATER QUALITY CONTROL DIVISION TELEPHONE: (303) 692-3500 CERTIFICATION TO DISCHARGE UNDER CDPS GENERAL PERMIT COR -030000 STORMWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION Certification Number COR034840 This Certification to Discharge specifically authorizes: EnCana Oil & Gas (USA) Inc. LEGAL CONTACT: Terry C Gosney, Envir. Coord. EnCana Oil & Gas (USA) Inc. 2717 County Road 215 Ste: 1P0 Parachute, CO 81635 Phone # 970/285-2687 terry.gosney@encana.com LOCAL CONTACT: Terry Gosney, Envir. Coordinator, Phone # 970/309-8155 terry.gosney@encan a. com During the Construction Activity: Gas/Oil Field Exploration and/or Development to discharge stormwater from the facility identified as Mamm Creek which is located at: E`t Various locations Various locations, Co 81650 Latitude 39/25/00, Longitude 107/50/00 In Garfield County to: -- Colorado River Anticipated Activity begins 07/01/2002 continuing through 06/30/2010 On 999 acres (999 acres disturbed) Certification is effective: 07/01/2007 Certification Expires: 06/30/2012 Annual Fee: $245.00 (DO NOT PAY NOW - A prorated bill will be sent shortly.) Page 1 of 22 PIPELINE RIGHT-OF-WAY GRANT FOR AND IN CONSIDERATION of the sum of Ten Dollars ($10.00) and other valuable consideration, the receipt of which is hereby acknowledged, Marvelle P. Couey and Kelly W. Couey of 7238 County Road 315, Silt, CO 81652 "GRANTOR", hereby grants unto EnCana Oil & Gas(USA) Inc. of 370-171h Street, Suite 1700, Denver, CO 80202 "GRANTEE", its successors and assigns, a non-exclusive easement, right-of- way and the right to lay, maintain, inspect, replace, erect, resize, operate, and remove one or more pipelines and such drips, valves, fittings, meters, and other equipment and appurtenances as may be necessary for the operation, over, through, upon, under and across the following described lands located in Garfield County, Colorado, to -wit: TOWNSHIP 7 SOUTH, RANGE 93 WEST ST" P.M. Section 5: SWY+, NW'/SE'/ IT IS MUTUALLY UNDERSTOOD AND AGREED BETWEEN THE PARTIES AS FOLLOWS: 1. In addition to the consideration hereinabove stated, Grantee agrees to pay Grantor Ten Dollars and other good and valuable consideration as damages to the growing foliage for the initial installation of said pipeline. Damages caused by future excavations or operations shall be settled by mutual consent. No trees will be removed while building this right-of-way. 2.Immediately after installation of the pipeline, Grantee agrees to restore the ground by adequately tamping and packing to a condition, as nearly as possible, as it existed prior to the installation of the pipeline. Grantee will maintain any erosion problems that arise due to construction of the pipeline. All pipelines shall remain in place upon termination, unless otherwise agreed to by the parties hereto. All disturbed areas shall be re -vegetated with seed and plant mixtures as recommended by the current BLM regulations for dryland pasture. The Grantee shall re -seed the disturbed area in the first favorable planting season after surface reclamation, but in no case more than twelve months after the initial disturbance. If such re -seeding is unsuccessful the Grantee shall re -seed again at the next favorable planting season. 3. Grantee agrees that any pipeline installed shall be at a minimum depth of 48 inches below the surface of the ground. The right-of-way granted shall be fifteen (15.0) feet on either side of the centerline hereof, except that during the initial installation of the pipeline, Grantor, for the consideration stated above, hereby grants unto the Grantee the right to access the right-of-way twenty-five (25) feet on either side of the centerline described in Exhibit "A" hereof as it runs through the above referenced lands. The additional right-of-way and right of access shall in no case endure for a period in excess of one hundred eighty days from the date hereof or the completion of initial installation, whichever period is the shorter. 4. All equipment or appurtenances to the pipeline, which shall be on or above the surface of the ground, shall be installed in a manner to protect the Grantor's livestock when necessary. 5. Grantee agrees that during construction of said pipeline, livestock crossings will be provided where necessary. Further, all fences that must be severed or removed for installation and maintenance will be reinforced prior to severing adjacent to where the cut is made to prevent damage to the fence line. Temporary gates to preclude the escape of Grantor's livestock shall be installed where necessary. All fences that are cut or removed shall be restored in as good a condition as existed prior to installation of the pipeline. 6. Upon request by Grantor, the right-of-way easement herein granted shall terminate and all rights thereunder revert to Grantor when the pipeline located therein has not been used by Grantee for a period of two (2) years, except when non-use is caused by acts or circumstances beyond the control of Grantee. 7. Grantee shall pay all incidental expenses incurred in recording and surveying said easement. East Dry Hollow 20" pipeline 8. Grantor shall not hold Grantee liable for damages incurred by Grantor as a result of Grantor's activities on the easement not compatible with the purposes contemplated herein. Grantee agrees to compensate Grantor for extraordinary loss or damages caused by Grantee, its agents or employees to persons, property or livestock, including that of its surface lessee, if any. Payments herein provided are acknowledged by Grantor sufficient and in full for damages caused or created by reason of the reasonable and customary entry, and subsequent operation of said well site. 9. Grantee shall, at its sole expense, keep the lands subject to the easement granted herein free and clear of all liens and encumbrances resulting from Grantee's and its agents' activities on the said lands and shall indemnify and hold harmless Grantor from and against any and all liens, claims, demands, costs, and expenses, including, without limitation, attorneys fees and court costs, in connection with or arising out of any work done, labor performed, or materials furnished. 10. The rights granted herein may be assigned in whole or in part. 11. This agreement shall be binding upon heirs, successors, and assigns of Grantee and Grantor and shall be a covenant running with this land. IN WITNESS WHEREOF, Grantor has executed this agreement this 21m day of January 2008. ,GRANTOR: ANTOR: Marvelle P. Covey w. Kelly W. ouey GRANTEE: EnCana Oil & Gas (USA) Inc. cardo D. Gallegos State of: Colorado ) )§ County of: Garfield ) Acknowledgement � On this V ''" day of—/�nte�"'!/ 2008, before me personally appeared Marvelle P. Couey and Kelly W. Couey, knownVnle to be the person(s) described in and who executed the foregoing instrument, and who acknowledged to me that they executed the same. `WITNE$rriy:liand and official seal. StALj` -t f, 1U( .•My Commissi6Fl Expires: G/"/l .b /g✓cam-4--,f ✓ � ',: Notary Public Acknowledgement State of: Colorado ) )§ City & County of Denver ) On this 4ta day of /64,--1---(2008, before me personally appeared Ricardo D. Gallegos, as attorney-in-fact for EnCana Oil & Gas (USA) Inc., known to me to be the person described in and who executed the foregoing instrument, and who acknowledged to me that he executed the same. WITNESS my hand and official seal. (SEAL) My Commission Expires: k123/d� East Dry Hollow 20" pipeline Exhibit"A" 1 of 2 OLO+511 0, Sea 52+14 Otakieoe LYoarng m teak road `Orr Mtn East Dry Hollow Pipeline Garfield County, Colorado Plan & Profile Details Exhibit "A" 2 of 2 0 0 n in 5 r 5 m L ro Sia. 9.'165 Acccf9 /Id Dunn 5-9 iln y: C/Cts^, '9'» age, C,n frq East Dry Hollow Pipeline Garfield County, Colorado Plan & Profile Details RIGHT -OF -'WAY EASEMENT - FOR AND IN CONSIDERATION of the sum of TEN AND NO/100 DOLLARS ($10.00) and other good Bund valuable considcration; in hand paid to Patricia Dunn (hereinafter referred to as GRANTOR, whether one or more), the receipt and sufficiency of which is hereby acknowledged, whose mailing address is 625 Sierra Court, Grand Junction, CO 81503 by EnCana Oil & Gas (USA) Inc., whose mailint2 address is 370 17th Street, Suite 1700, Denver, CO 80202, (hereinafter referred to as GRANTEE); GRANTOR hereby grants, sells, conveys aiid warrants to GRANTEE, its successors and assigns, a permanent easement, thirty (30) feet m width, for the purpose at any time and from time to time to lay; locate and/or abandon in place, one (1) or more pipeline(s) and appurtenances, equipment and facilities useful or incidental thereto, including, but not limited to, valves, metering and corrosion control equipment, and any above, -ground appurtenances, as may be necessary or convenient, for the transportation of natural gas, petroleum, petroleum products and derivatives thereof and any other liquids, gases, or substances which can be transported through pipelines, upon and along a route to be selected by GRANTEE on, over, across and through lands owned by GRANTOR, or in which GRANTOR has an interest, situated in Garfield County, 4 State of Colorado described as follows: TOWNSHIP 7 SOUTH, RANGE 92 WEST, G' P.M. Section 4: N'/SW'/, SE'/SW1/4, S%2SE% Section 5: NE'/SE'/n Section 9: W%NE% and being the same land described in that certain Deed, recorded in Book 845 , Page 260 , of the Clerk's office of said County, to which referenceis made for further description. In addition to the thirty (30) feet permanent easement area as defined above, GRANTOR grants to GRANTEE a temporary easement of twenty-five (25) feet in width adjacent to the permanent casement, for the purpose of enabling GRANTEE to initially construct the pipeline. Alter the post-construction.cleanup following the initial pipeline construction, the permanent easement area shall be. limited, to 'a strip thirty (30) feet wide as referenced above. The permanent easement, located on the above described lands is generally described on Exhibit A attached hereto and made a part hereof. Exhibit A :attached hereto is not intended to show the final location of the easement or pipeline as actually constructed; the actual location of the easement will extend fifteen (15) feet on each side of the centerline of the pipeline as actually laid. All large rocks uncovered will be buried or removed from the property. GRANTOR further grants and conveys unto GRANTEE the right of unimpaired ingress and egress on, over, across and through the above-described ?ands includinq other lands owned, leased or claimed by GRANTOR which are adjacent thereto or contiguous therewith for all purposes necessary or incidental to the exerciseof the tights herein granted, with the further right of entay to maintain the easement herein granted clear of trees, undergrowth, brush, structures; and any other items, to the•extent GRANTEE deems necessary in the exercise of the rights granted herein. GRANTEE shall not be liable for damaes caused by keeping said easement clear of trees, undergrowth, brush, structures, or any other obstructions. GRANTOR shall have the right to use and enjoy the above-described premises; provided however. GRANTOR shall not exercise such use and enjoyment in a manner that will impair or interfere with the exercise by GRANTEE of any of the rights herein grantee. GRANTOR agrees not to change the grade over the pipeline constructed hereunder and shall not build, create, construct, or permit to be built, created, or constructed, any obstruction, building, lake, engineering works, or any other type of structure over or on said easement. All equipment or appurtenances to the pipeline, which shall be on or above the surface of the ground, shall be installed in a manner to protect the GRANTOR'S livestock when necessary. GRANTEE agrees that during construction of said pipeline, livestock crossings will be provided where necessary. Further, all fences that must be severed or removed for installation and maintenance will be reinforced prior to severing adjacent to where the cut is made to prevent damage to the fence line. Temporary gates to preclude the escape of GRANTOR'S livestock shall be installed where necessary. All fences that are cut or removed shall be restored in as good a condition as existed prior to installation of the pipeline. GRANTEE agrees at the time of construction to bury said pipelines to a minimum depth of 48", as not to interfere with lands under cultivation, and in accordance with applicable Federal and State regulations. Following installation of the pipeline, GRANTEE agrees to restore the ground as nearly as is practicable, to its condition prior to the installation of the pipeline and in accordance with Federal regulations. GRANTEE shall, at its sole expense, keep the lands subject to the casement granted herein free and clear of all liens and encumbrances resulting from GRANTEE'S and its agents' activities on the said lands and shall indemnify and hold harmless GRANTOR from and against any and all liens, claims, demands, costs, and expenses, including, without limitation, attorneys' fees and court costs, in connection with or arising cut of any work done, labor perforated, or materials furnished with respect to or by GRANTEE and/or GRANTEE'S. agent. TO HAVE AND TO MOLD unto GRANTEE, its successors and assigns, so long as the right and easement herein granted, or any one of thein shall be used by, or useful to GRANTEE for the purposes herein granted and the provisions of this agreement are to be considered a covenant that runs with the land herein described and GRANTOR hereby binds themselves, their heirs, executors and administrators, and their successors and assigns to warrant and forever defend this right of way and easement unto the GRANTEE, its successors. and assigns, against every person whomever lawfully claiming or to claim the same or any part thereof. The easement and rights herein granted may be transfened, leased or assigned, from time to time, in whole or in part. It is agreed that any payment due hereunder may be made direct to said GRANTOR or any one of then (if more than one). Section 1445 Certification — Under penalties of perjuy, the undersigned Grantor(s) hereby certifies that it (they) is (are) not a non-resident alien, foreign corporation, foreign partnership, foreign trust or foreign estate for purposes of U.S. income taxation. EXECUTED as of this day /0 GRANTOR: ofj;cUt txat- r 2008 Patricia Dunn GRANTEE: EnCana Oil & Gas (USA) Inc. lJy: Ricard D. G llegos, Attorney -in -Fact Notary page for Right -Of -Way Basement dated this 7� day of �r,1,644 N between Patricia Dunn and EnCana Oil & Gas (USA) Ina 1 �6 2008. by and State of: Colorado ) ) § County of: Mesa ) u On this Yit) <lay of be the person described in and wh6'executed the foregoing instrument, and who acknowledged to me that she execiited,the same. ACKNOWLEDGMENTS , 2008, before me personally appeared Patricia Dunn knowr to -(ufvr5samn2ission expires_ c My Commission Expires 06119/2010 Notary Public: State of Colorado § City and County of Denver On this J 2 day of 2008; before nie personally appeared, Ricardo D. Gallegos Attorney -in -Fact for EnCana Oil & Gas (USt ) Inc., known to be the person described in and who executed the foregoing instrument, and who acknowle.ged to me that he executed the same. SEAL My commission expires \y' `\ Notay Public: 1/1 My Commission Expires 0612314009 / 16 5773 .1 c, 577, .1 271.8 CD 5789.7 1 _8795.^ 1 1 c7 57922 1 0 .il.d2 I -8-51' c CI 1 m' 0 o N • 0 D m, o 0 O IF' 0 0 1 m m Sle, 93+65 592' 5 5926.7 58 5548 5545.1 850_5 8 5663 0 264 5 5791? Access Rd Dunn 5-9 5876.5 o 5se2) O - 0 5903.6' 5924.:1 5931.9 93 4. 5929.4 59)7it • 5915 1 0 5900.6 C 5905. 9 90+._ .3 1 SIa 118+54 Drainage Crossing Sle. 119+21 1 Drainage Crossing 1 z m EXHIBIT "AI' 1 OF 2 a cz\ litw,.0 Pc -avvti` v6 � �emSo.. -�'iu _.,.a N'- +,,`nti r 2 pc> In I 50216'58"E, 283328' (2;94 03 ) e' rt iFF2R:tRCI. --_+ t 4 711 4- 85149,0 74776 85125.1 i0r6_ v0_°-7 200 0 c0 :o0 N®_®i ICS (9CW£N pwr) Properly Line 11. 6 1i,; 98+T5.: 0£.15.2 (6,o:ncr) 90+90.9 (0tainaw) Utr51 5 q/int ill.? V- ,. 107127.E MI 22 5'I (Cr;aac^) tar Sec fon 5 / -- tC5=j9 t �t;� Section 4 . `�,/% D c^,e) ) n5. (e3cu030) 0 tZ 0'09 .(,-,lead 1V, 3.5 0) 7+0+101 (Poa ,o 03) Z'c{+oZ act ;- '33) I'o -.a ETCK 603o,*5 SURVEYI NG r..r.0po7)so-lsa rrcr4NR (X l):6H545 East Dry Hollow Pipeline Garfield County, Colorado Plan & Profile Details N c 592.0., 5936.2 5933.2 Sla 125(45 Drainage Crossing 1 r Sta. 126+50 Access Roed 5- 11 594.3.4 595 59;329 5374 2 51 5930.6 5995 992 ' 59937 6005 31 0 'N " 6004 0 0O ', Sta. 134443 ,Access Road 60117 i = 60755 0 0 •0 0 0021.8 4025.3 I' Sta. 144+70 Access Roed 602:9 P. 71 04i 6036.2 D r 0 60.39 ti 604}9 0 6048.7 \: 0 0 1/3 605,.0 031.1 5069.9 6970 5 s032 6w4,5 _090 11.6 2 D 2 EXHIBIT "A" 2 OF 2 , OBZ49Z 3.,8t,£9.88N 0 0 3 ay N.4.53 2.0 cal+ 5 '70,0.4 -tib 9 r64 l 69, (5410) 3t6 "_ 91 ,09'Z>9Z M„2LLS.4G 81,1 P v i S ao 0 0, .n Lecnin moi (SCALE N [ iw n'Oo >vV Oa "7 U� lh Gilt t -, if -3222i LINE TABLE ,F,: • S ,c o l�VD Old CV z L t,. Inl4 y6'\� ro. —Ir— l SURVEYING e`"'""''w""a8�d East Dry Hollow Pipeline Garfield County, Colorado Plan & Profile Details. .1111E11 1111111111111 1111 11111 11E111 1111111 11111111111 ill - 675221 06/81/2005 08 30A 81692 P70 ALSDORF 71: of 5 R 25.00 D 0.00 GARFIELD COUNTY CO MEMORANDUM OF SURFACE USE AGREEMENT, State: Colorado Couiq Garfield Owner: B.J.M. Ltd. K.R.K. LLLP Rebjak LLLP Shaeffer Family Trust Shaeffer Ltd. 5957 County Road 319 Rifle, CO 81650 Operator: EnCana Oil & Gas (USA) Inc. 370 17th Street, Suite 1700 Denver, CO 80202 , 2005 Date of Agreement: For adequate consideration and as of the effective date stated above, the Owner and Operator named above, have executed a Surface Use Agreement (the "Agreement");which governs the Operator's oil and gas operations on the surface of the lands described on the attached Exhibit A. This Memorandum is placed of record for the purpose of giving notice of the Agreement and is given in lieu. of filing said Agreement in full for record in the official records of Garfield County, Colorado Executed copies o f the Agreement are maintained in the possession of both the Owner and Operator. This Memorandum is signed by Owner and Operator as of the date of acknowledgment of their signatures, but is effective for all purposes as of the Date stated above B.J.M. Ltd. /2A... at,G(- -. Date 272 eVel-('_ Barbara J MornsGeneral Partner EnCana Oil & Gas, Inc Land Department 2717 County Road 215, Suite 100 ...Sohn Parachute, CO 81635 1111111111111111111111 11111 111111 1111 1111111111111 675291-06/01/2005 08 30A 61692 P M RLSDORF 2 6f 5 R 26.00 D 0.00 GRRFIELD COUNTY CO STATE OF COLORADO ) ) ss COUNTY OF , , p Zv) The Foregoing mstrrent was subscribed and sworn to before me on Artie 3005, by / .. e „ _ E My commission exprle4' Witness my (rand and seal K.R.K. LLLP d/ S Katherine F Rogers, General Partner STATE OF COLORADO ) rn )ss COUNTY OF X'1Y>°rscAl Date' 1<2S/o.5 The ibregontg instrument was subscribed and sworn to before me onfp[1,,,;y„ 2005, by :.5p F (coy✓5 Uirtae pyres My Commsslon Expires Itcbjak ItA¢ygi8ER29.2008 illaghooK Partner s y r 1-larold B Shaeffer, Trustee Sliaefferamrl T General STATE OF COLORADO ) ) ss 49-19-:511M:k2V 11211120042 041'M Notary Publica Date 212�f.2,4—. 1 HIV 575291 06/01/2005 08 30A 81692 P72 M ALSDORF 3 of 5 R 2(.00 D 0.00 GARFIELD COUNTY CO COUNTY OP (-yr 1,e The foiegomg instrument was subscribed and svoiti to before me on rebrw,_^i a3 2005, by Nth Shneff(! My commission expires' Mute Ito! Anti, Witness my hand and seal Shaeffer Family Trust Imo/. .� Harold B Shacffe stee STATE OF COLORADO ) ) ss. COUNTY OF 6crF(vol, ) Date- z//23/1) - The foregoing instrument was subscribed and sworn to before me on (cJ ruc_: ei a3, 2005, by Re? 5h&eS--ftp My commission expires. Witness my hand and seal. Shaeffer Ltd. Sunt Iln, CO(,f GGin�r� ddY4l�U� Notary Public Huinac Management, Inc , General Partner Harold B Shaeffer, Pi esident S ['r'1TE OF COLORADO ) ) ss COUNTY OF ) Date. 2y/Z9/o s 1111111[111111111111111111111111110111111111:1111 ` 675291 06/01/2005 08 30R 81692 P11 RLSDORF 4 of 5 R 26.00 D 0.00 GRRFIELD COUNTY CO The foiegoing instrument was subscribed and swoin to beloie inc on 2005, by IIP 511otf&r My commission expues SUA.e_ Rol deet„ Witness my hand and seal. EnCana Oil & Gas (USA) Inc. ( Jet S Fox, A torney-m-Fact STATE, OF COLORADO ) CITY AND COUNTY OF DENVER ) 03 Notary Public Y-fti The foregoing instrument was acknowledged before me on this, day o 2005 by Joel S. Fox, Attorney -in -Fact For EnCana Oil & Gas (USA) Inc , a Delaware corporation, on behalf of said corporation. My Commission Expires FM eanmbsnn Ewte% 7/i9(2ODB 1 Notary tublic OWNER: B.J.M. Ltd. m er-/(ur.r6- C. 7720- Barbara J. Morris General Partner K.R.K. LLLP Katherine F. Rogers, General Partner Rebliak LLLP Sheeffer Faintly T u General Partner Harold B. Shaeffer, Trustee 20 Date. 21,Zb/n�� Date <2 4.<7.„1—/z2 Date g43/05 Sha offer Family Trust AvA ' Harold B. Shaeffer, Trustee Shaeffer Lid. /frIt&atil-Gfi Hurnae Management, Inc., General Partner Harold B. Shaeffer, President OPERATOR: GnCana Oil & Gas (USA) Inc. oel S Fox Attorney -in -Fact By. 21 2`0_/oS Date: Date y/ /O51- • 1 111111 111111 1111111 1111 11111 ``11111111111 1114111 11111111' - '675291 06/01/2005 08 30A 81692 P74 M ALSDORF 5 of 5 R 26,00 D 0.00 GARFIELD COUNTY CO EXHIBIT A B.J.M. Ltd. Township 6 South, Range 92 West of the 6'h P M Section 30 Lots 3 and 4 Section 31 Lots 1-4, W/2SE14 Township 7 South, Range 92 West of the 6'h P M Section 6 SE/4, N/2NE/4SW/4, Lots 1 and 2, N/2N/2 of Lot 3 K.R,K. LLLP. Township 7 South, Range 92 West of the 61h P M Section 6 S/2N/2 of Lot 3, Sf2 of Lot 3, SE/4SW/4, S/2NE/4SW4 Section 7 Lots 1 and 2, E/2, E/2W/2 Rebjak LLLP Township 7 South, Range 93 West of (he 6'h P M Section 11 E/2E12, except 3 acres heretofore conveyed by Warranty Deed recorded as Document No 279583 to Book 498 at page 539 of the Garfield County Records Section 14 NE/4NE/4 Shaeffer Family Trust Township 7 South. Range 93 West of the 6th P M Section 11 Shaeffer Ltd 3 acres heretofore conveyed by Warranty Deed recorded as Document No 279583 in Book 498 at page 539 of Garfield County Records Township 7 South, Range 93 West of the 6th P M Section 12 W/2, NE/4, N/2SE/4 Section 13 NE/4NE/4 Township 7 South, Range 93 West of the 6' P M Section 18 Lot 1, E/2NW/4 and 3 acres situated in Lot 2 described as follows Beginning at the NW corner of the NE/4SW/4 of said Section 18. thence South 1320 feet. thence West 99 feet, thence North 1320 feet thence East 99 feet to the place of beginning Integrated Vegetation and Noxious Weed Management Plan East Dry Hollow Loop Phase I Pipeline Garfield County East Facing View of Existing Right -of -Way on Hunter Mesa Prepared for: EnCana Oil and Gas (USA), Inc. Parachute, Colorado Prepared by: WestWater Engineering 2570 Foresight Circle #1 Grand Junction, CO 81505 March 2008 1.0 INTRODUCTION 1.1 Project Description EnCana Oil and Gas (USA), Inc. plans to install a 20 inch gas pipeline from their Hunter Mesa compressor station to well pad OlE east of West Divide Creek. Phase I of this pipeline begins at the Hunter Mesa compressor station and terminates at well pad P4E (Figure 1). This report pertains to the Phase I portion of the proposed pipeline which is approximately 3.27 miles in length. Beginning at the compressor station, the pipeline traverses an open meadow with several small drainages, following an existing gas and waterline right-of-way (ROW) east to County Road 315. The pipeline then crosses Mamm Creek heading in a northeasterly direction following portions of the existing ROW and access roads to well pad P4E. This section of the pipeline ascends through a natural drainage to the top of the ridge where it passes through meadows lying adjacent to the access roads for well pad P4E. The topography in the Phase I section of the pipeline is generally flat to rolling meadows with shallow drainages cutting across the mesas. The exception is the Mamm Creek drainage, which has moderately steep hillsides with the creek itself lying well below the surrounding mesas. The west side of the Mamm Creek pipeline crossing is moderately steep with the east side gradually rising in elevation to the mesa area where well pad P4E is located. Elevations along the pipeline route range from 5800 feet in the Mamm Creek drainage to 6000 feet on top of the mesas. 2.0 LANDSCAPE SETTING 2.1 Vegetation Communities The predominant vegetation community along the pipeline route consists of open irrigated meadows with small drainages vegetated with Utah juniper (Juniperus utahensis), sagebrush (Artemesia tridentata), rabbitbrush (Chrysothamnus nauseosus), fourwing saltbush (Atriplex canescens), mountain mahogany (Cercocarpus montanus) and sumac (Rhus trilobata). The ridges were vegetated primarily with Utah juniper, sagebrush and scattered mountain mahogany. A snow depth of 16-24 inches precluded observation of most grasses, forbs and noxious weeds. The riparian area adjacent to Mamm Creek contains narrowleaf cottonwood (Populus angustifolia), wild rose (Rosa woodsii), tamarisk (Tamarix ramosissima) and scattered big basin sagebrush on the fringes. 2.2 Soil Types There are four primary soil types found within the proposed pipeline corridor; Arvada loam, Olney loam, Potts loam and Torriorthents-Camborthids-Rock outcrop complex. The Olney and Potts loams are characteristic of the meadows on the mesa tops while the Arvada loam is found in the riparian area adjacent to Mamm Creek. These soil types are found on slopes between 1 to 6 percent. Native vegetation characteristic of the Olney and Potts loam soils is western wheatgrass (Pascopyrum smithii), bluebunch wheatgrass (Agropyron spicatum), big sagebrush, needle and thread grass (Hesperostipa comata), Indian ricegrass (Oryzopsis hymenoides) and rabbitbrush and bottlebrush squirreltail (Elymus elymoides). Expected vegetation associated with the Arvada loam soils include western wheatgrass, inland saltgrass (Distichlis spicata), alkali WestWater Engineering Page 1 of 17 3/18/2008 sacaton (Sporobolus airoides), winterfat (Krascheninnikovia lanata), greasewood ((Sarcobatus vermiculatus), Gardner's saltbush (Atriplex gardneri) and bottlebrush squirreltail. The Torriorthents-Camborthids-Rock outcrop complex is found on steep hillsides with slopes of 15-70 percent and adjacent ridge -tops. The steep slopes associated with the Mamm Creek drainage are associated with these soils and depending on aspect, vegetation communities found on these soils include piiion juniper woodlands and mountain shrubs. 3.0 NOXIOUS WEEDS Noxious weeds are plants that are not native to an area. Most have come from Europe or Asia, either accidentally or as ornamentals that have escaped. Once established in a new environment they tend to spread quickly since insects, diseases and animals that normally control them are absent. Noxious weeds are spread by man, animals, water, and wind. Prime locations for the establishment of noxious weeds include roadsides, sites cleared for construction, areas that are overused by animals or humans, wetlands, and riparian corridors. Subsequent to soil disturbances, vegetation communities can be susceptible to infestations of invasive or exotic weed species. Vegetation removal and soil disturbance during construction can create optimal conditions for the establishment of invasive, non-native species. Construction equipment traveling from weed -infested areas into weed -free areas could disperse noxious or invasive weed seeds and propagates, resulting in the establishment of these weeds in previously weed -free areas (Photo 1). Photo 1. Potential weed vector — accumulated soil on equipment Prevention and control of noxious and invasive weeds is a high priority for the State of Colorado. Colorado's Noxious Weed Act (State of Colorado 2005) sets forth the rules pertaining to prevention and control and classifies noxious weeds into three lists; A, B, and C. Each list has specific control requirements, with the most stringent requirements for those species found on WestWater Engineering Page 2 of 17 3/18/2008 List A. List A includes noxious weeds targeted for eradication and for which management plans have been developed for their control. Control of these species is required by law. If these species are found within a project area, prescribed management techniques stipulated by Colorado's Noxious Weed Act must be implemented. These techniques must be applied for the duration of the seed longevity for the particular species. List B species are recommended for control through the development and implementation of state noxious weed management plans. List C species are generally considered too widespread to effectively control. Control of List C species is not required but may be done by jurisdictions that chose to manage these species. In addition to the State-wide noxious list, Counties may elect to target specific noxious weeds in their locale. The noxious weed list for Garfield County is found in Table 1. 3.1 Survey Methods Mapped soil types, as published by the Natural Resources Conservation Service (NRCS), U. S. Department of Agriculture (USDA), were reviewed to determine the soil types and vegetation characteristics of the plant site and surrounding property (NRCS 2008). A preliminary field inspection of the proposed East Dry Hollow Phase I pipeline section was conducted by WestWater Engineering (WWE) biologists on February 6 and 12, and March 11, 2008. WWE biologists surveyed an area 60 feet from the center line on both sides of the proposed pipeline. WWE biologists surveyed the area to identify vegetation communities and to search for, identify, and map noxious weed species. A snow cover of 16-24 inches prevented accurate detection and identification of existing weeds. Only those plants persisting above the snow were observed and recorded. Vegetation types were determined through field identification of plants, aerial photography, and on -the -ground assessments of plant abundance visible during the survey. Identification of plant species was aided by using pertinent published field guides (Whitson et al. 2001, CWMA 2007, Kershaw et al. 1998). Weeds visible above the snows were identified from dried residual growth. Photographs were taken of the general project location, vegetation and terrain, and other specific biological findings. Locations of weeds and other features included in this report were recorded with the aid of a handheld global positioning system instrument (GPS) using NAD83/WGS84 map datum, with all coordinate locations based on the Universal Transverse Mercator (UTM) coordinate system in Zone 13S (Appendix A). 3.2 Observations This report includes weeds found during the February 6 and 12, and March 11, 2008, survey by WWE biologists. Few weeds were observed due to the 16-24 inch snow cover. Additional surveys will need to be done during the spring/summer of 2008, to more accurately determine the location and extent of noxious weeds in the project area. Most weeds observed during the February survey were found in the drainages, riparian areas, and disturbed areas within the power line ROW (Figure 1). Noxious weeds observed included houndstongue, chicory, bull thistle, Russian knapweed, downy brome and tamarisk (Table 2). The most prevalent weeds observed were houndstongue and chicory (Photos 2 and 3). Other problematic weeds noted during the survey were kochia and Russian thistle. WestWater Engineering Page 3 of 17 3/18/2008 -13 m `E ca 0 x x x x x x x x x x x x x x x x x x x x x x x x State "C" List x x x State "B" List x x x x x x x x x x x x x x x ><X><>< State "A" List x x N d R' J 4.1 2 a. ¢ m a. a. m m a. a < a. a. a ca a. a. a. a. a. a m a_ a. a ou. C7 u. u_ u_ u_ u_ u_ u_ u_ u_ u. u_ F . u. u_ u_ u_ u_ u. F- F— F- Species Code ACRE 3 <W N CC <<0 M a 0 CAAC CANU 4 CEDI 3 CEMA 4 CESO 3 CHLE 80 Z 00 V QW CYOF J ELAN WJ�.-1 N LYSA 2 0 TACH 2 TAPA 4 TARA Common name Russian knapweed Jointed goatgrass Common (Lesser) burdock Absinth wormwood Hoary cress, Whitetop Spiny plumeless thistle Musk (Nodding plumeless) thistle Diffuse knapweed Spotted knapweed Yellow starthistle Oxeye daisy a. O U U Canada thistle Houndstongue, Gypsyflower Russian olive Leafy spurge Dalmatian toadflax, broad-leaved Dalmation toadflax, narrow -leaved Yellow toadflax Purple Ioosestrife Scotch thistle Chinese tamarisk Smallflower tamarisk Salt cedar, Tamarisk Species Acroptilon repens Aegilops cylindrica Arctium minus Artemisia absinthium Cardaria draba Carduus acanthoides Carduus nutans Centaurea diffusa Centaurea maculosa Centaurea solstitialis Chrysanthemum leucanthemum Cichorium intybus Cirsium arvense Cynoglossum officinale Elaeagnus angustifolia Euphorbia esula Linaria dalmatica Linaria genistifolia Linaria vulgaris Lythrum salicaria Onopordum acanthium Tamarix chinensis Tamarix parviflora Tamarix ramosissima C a) a. u O. c c a) CO c of E a a) J N 6 O • C E l6 O) C9 a) O I I u. co co Q] a) 1 - Growth form: T = WestWater Engineering Table 2. Name, Type and Control Methods For Weeds In Project Area Common Name*/ USDA Symbol Scientific Name Type Control Methods Russian knapweed 6 ACRE3 Acroptilon repens P Re -seeding disturbed sites with fast growing grasses, herbicide in fall; allelopathic — tillage may be necessary houndstongue ° CYOF Cynoglossum off/dude B Re -seed with aggressive grasses, remove at flowering or early seed, dig or grub at pre -bud or rosette stage or apply herbicides prior to bud stage. chicory ` CIIN Cichorium intybusP Hand pulling effective in small patches only. Herbicide treatment in bud to bloom stage or in fall. Fall treatment most effective since following years shoots are killed. tamarisk b TARA Tamarix ramosissima P Repeated flooding prevents seedling establishment. Herbicide treatment on basal portion of young plants; cut larger plants and treat with herbicide plus adjuvant within 30 minutes. Plant area with native species to shade out tamarisk. Biological with insects if available. bull thistle 6 CIVU Cirsium vulgare B Till or hand grub in the rosette stage, mow at bolting or early flowering; apply seed head & rosette weevils, leaf feeding beetles, cut and bag mature seed heads. Herbicides in rosette stage. downy brome a BRTE Bromus tectorumC Eliminate seed source; re -vegetate with native grasses; herbicide treatment in early spring and fall. * 8 CCR 1203-19, Colorado Department of Agriculture; Bold type on Garfield County list and observed in field; °State of Colorado "A" list, " "B" list, ` "C" list, , " not listed. Type: A -annual, B -biennial, P -perennial. NRCS 2007, Sirota 2004, Whitson etal. 2001 WestWater Engineering Page 5 of 17 3/18/2008 Lf) N 0 M Photo 2. Houndstongue in Pipeline ROW WestWater Engineering Photo 3. Chicory in Pipeline ROW Page 7 of 17 3/18/2008 3.3 Treatment and Control of Noxious Weed Infestations Invasive and noxious weeds commonly occur along creek corridors and adjacent drainages, especially along riparian areas, pipeline routes, disturbed areas such as well pads, roadsides, and abandoned fields. From the noxious weed list developed by the State of Colorado (8 CCR 1203- 19), Garfield County has designated 24 weeds to be controlled in its jurisdiction (Table I). Four weed species from the Garfield County list were found in or near the proposed pipeline ROW and are indicated by bold type in Table 2. Included in Table 2 are weed life cycle type, state listing category, and recommended control method for each weed species. Those in regular type were also observed during the survey and are listed by the State of Colorado as noted (CWMA 2007). The locations of these weeds were plotted on the project map (Figure 1). Other problematic weeds not listed by Garfield County or the state will be included in any spring 2008 surveys because of the adverse impact these species may have on reclamation through competition for moisture with desirable species. 3.4 Recommended Treatment Strategies It is important to know whether the target is annual, biennial, or perennial to select strategies that effectively control and eliminate the target. Treatment strategies are different depending on plant type, which are summarized in Tables 3 and 4. In Section 3.5, the Life Cycle and Management Calendars section and Table 5, best timing and strategies are illustrated for the noxious weeds found. Herbicides should not always be the first treatment of choice when other methods can be effectively employed. Table 3. Treatment Strategies for Annual and Biennial Noxious Weeds Target: Prevent Seed Production 1. Hand grub (pull), hoe, till, cultivate in rosette stage and before flowering or seed maturity. If seeds develop, cut and bag seed heads. 2. Chop roots with a spade below soil level. 3. Treat with herbicide in rosette or bolting stage, before flowering. 4. Mow biennials after bolting stage, before seed set. Mowing annuals will not prevent flowering but can reduce total seed production. (Sirota 2004) Table 4. Treatment Strategies for Perennials Target: Deplete nutrient reserves in root system, prevent seed production 1. Allow plants to expend as much energy from root system as possible, do not treat when first emerging in spring, but allow growth to bud/bloom stage. If seeds develop, cut and bag if possible. 2. Herbicide treatment at bud to bloom stage or in the fall (recommended, after August 15 when natural precipitation is present). In the fall, plants draw nutrients into the roots for winter storage. Herbicides will be drawn down to the roots more efficiently at this time due to translocation of nutrients to roots rather than leaves. If the weed patch has been present for a long period of time, another season of seed production is not as important as getting the herbicide into the root system. Spraying in fall (after middle August) will kill the following year's shoots, which are being formed on the roots at this time. WestWater Engineering Page 8 of 17 3/18/2008 Table 4. Treatment Strategies for Perennials Target: Deplete nutrient reserves in root system, prevent seed production 3. Mowing usually is not recommended because the plants will flower anyway; seed production should be reduced. Many studies have shown that mowing perennials and spraying the re -growth is not as effective as spraying without mowing. Effect of mowing is species dependent; therefore, it is imperative to know the species and its basic biology. Timing of application must be done when biologically appropriate, which is not necessarily convenient. 4. Tillage may or may not be effective. Most perennial roots can sprout from pieces only 1/2" - 1" long. Clean machinery thoroughly before leaving the weed patch. 5. Hand pulling is generally not recommended for perennial species unless you know the plants are seedlings and not established plants. Hand pulling can be effective on small patches but is very labor intensive because it must be done repeatedly. (Sirota 2004) Herbicide treatment with two or more herbicide modes of action in fall (after approximately August 15 when natural precipitation is present) is the best method to control difficult species. The resilience and ability to quickly develop immunity to herbicides, particularly those used incorrectly, makes it imperative to use the proper chemicals at the correct time in the specified concentration. Most misuse seems centered around excessive use either in frequency or concentration. This results in mostly top kill and an immune phenotype. 3.5 Life Cycle and Management Calendars Figure 2 is a two-year calendar for control and life cycle of biennial thistles such as bull thistle and musk thistle. It is also appropriate to control common mullein. One column that should be added is cutting of rosettes, which can be done any time during growing. Figure 2. Life Cycle and Management strategies for biennial thistles Herbicide Application tErnmenca Rosette Neb. Appl. Mowing ► Bohs FrOWCIs Lues Spring Sunvner FII Winter Spring Summer Year Year (Hartzler 2006) WestWater Engineering Page 9 of 17 3/18/2008 Best results in the control of thistles and knapweed can be achieved by following the recommended timetable presented in Table 5. Species Thistle, Canada Type* P Knapweed, Russian Thistle, Bull - 1st year Thistle, Bull - 2nd year Jan CP B B --> Thistle, Musk, 1s` year B Thistle, Musk, 2nd year B Tamarisk* P -4 Febe r -4 Semi - dormancy -4 Table 5. Noxious Weed Biology March April May June July Aug Sept Oct Rosettes emerges germination --> Germination -9 4 -9 Leaves emerge rosettes bolting rosettes Bolting --4 flowering Seed flowering flowering --> seed set -4 flowering seed set flowering seed set set regrowth --> --> -9 growth -4 Nov Dec r regrowth --> --> rosettes -4 --� -4 rosettes flowering seed set A = annual; WA = winter annual; B = biennial; P = perennial; CP = creeping perennial Semi - clemency -4 9 Shaded areas indicate best control timing. * Tamarisk control can be done any time of the year, but is easier when leaves are absent and weather is cooler. (Sirota 2004) 3.6 Commercial Applicator Recommendations A certified commercial applicator is a good choice for herbicide control efforts. An applicator has the full range of knowledge, skills, equipment and experience desired when dealing with Russian knapweed and other difficult vegetation. Reclamation farming services using multiple seed bin range drills and specialized related equipment is available and should be used for reclamation seeding projects. Common chemical and trade names may be used in this report. The use of trade names is for clarity by the reader. Inclusion of a trade name does not imply endorsement of that particular brand of herbicide and exclusion does not imply non -approval. Certified commercial applicators will decide which herbicide to use and at what concentration according to label directions. Landowners using unrestricted products must obey all label warnings, cautions, and application concentrations. The author of this report is not responsible for inappropriate herbicide use by readers. WestWater Engineering Page 10 of 17 3/18/2008 3.7 Best Management Practices — Noxious Weeds The following practices should be adopted for any construction project to reduce the costs of noxious weed control. The practices include: • top soil, where present, should be segregated from deeper soils and replaced as top soil on the final grade, a process known as live topsoil handling; • wetland vegetation, if encountered, should be live handled like sod, temporarily watered if necessary, and placed over excavated sub -soil relative to the position from which the wetland sod was removed; • cut-off collars should be placed on all wetland and stream crossings to prevent back washing or draining of important aquatic resources; • in all cases, temporary disturbance should be kept to an absolute minimum; • equipment and materials handling should be done on established sites such as the northern point of origin to reduce area and extent of soil compaction; • disturbances should be immediately re -seeded with the recommended mix in the re - vegetation section; • topsoil stockpiles should be seeded with non-invasive sterile hybrid grasses, if stored longer than one growing season; • prior to delivery to the site, equipment should be cleaned of soils remaining from previous construction sites which may be contaminated with noxious weeds; and • if working in sites with weed -seed contaminated soil, equipment should be cleaned of potentially seed -bearing soils and vegetative debris prior to moving to uncontaminated terrain. In areas with slope greater than 3 percent, imprinting of the seed bed is recommended. Imprinting can be in the form of dozer tracks or furrows perpendicular to the direction of slope. When hydro -seeding or mulching, imprinting should be done prior to seeding, unless the mulch is to be crimped into the soil surface. If broadcast seeding and harrowing, imprinting should be done as part of the harrowing. Furrowing can be done by several methods, the most simple of which is to drill seed perpendicular to the direction of slope in a prepared bed. Other simple imprinting methods include deep hand raking and harrowing, always perpendicular to the direction of slope. Herbicides: Difficult species respond better to an application of a combination of two or more chemical modes of action (biological reason for plant death) rather than one (Boerboom 1999). It has also been found that use of two different groups of chemicals in the same mode of action can increase effectiveness on difficult species, e.g., phenoxys and benzoic acids or carboxylic acids and benzoic acids in a mix. Some come commercially pre -mixed, e.g., Crossbow and Super Weed -be -Gone Max, which are available over the counter. However, some of the most effective herbicides are restricted use and available only for licensed applicators. WestWater Engineering Page 11 of 17 3/18/2008 Professionals or landowners using herbicides must use the concentration specified on the label of the container in hand. Herbicides generally do not work better at higher concentrations. Most herbicide failures observed by WWE are related to incomplete control caused by high concentrations killing top growth before the active ingredient can be transported to the roots through the nutrient translocation process. Most herbicide applications should use a surfactant if directed on the herbicide label or other adjuvants as called for on the herbicide label. Grazing: Grazing should be deferred, in reclaimed areas, until the desired grass species are established. Mechanical: Bull thistle when found in low density and occurrence is an example where control could be accomplished mechanically. Alternative Methods: An alternative method, particularly for downy brome infestations and poor or destroyed topsoil, is the application of vesicular-arbuscular mycorrhizal fungi typically referred to as AMF. These fungi, mostly of the genus Glomus are symbiotic with about 80 percent of all vegetation. Endo-mycorrhizal fungi are associated mostly with grasses and forbs and could be helpful when reclaiming this project. In symbiosis, the fungi increase water and nutrient transfer capacity of the host root system by as much as several orders of magnitude (Barrow and McCaslin 1995). Over-the-counter commercial products, which are better adapted to coating seeds when re- seeding and treating roots of live seedling trees and shrubs at time of planting, come in powder form and are available from many different sources. Some also come in granular form to be spread with seed from a broadcast spreader. The best AMF products should contain more than one species. All Colorado State Forest Salida District tree and shrub plantings include the application of AMF. According to District Forester Crystal Tischler, "AMF is worth it" (Tischler 2006). Most, if not all, Colorado Department of Transportation re-vegetation/re-seeding projects now require use of AMF and BioSol, a certified by-product of the penicillin manufacturing process composed primarily of mycelium. Compacted soils respond well to fossilized humic substances and by- products called humates. These humates, including humic and fulvic acids and humin were formed from pre -historic plant and animal deposits and work especially well on compacted soils when applied as directed. 4.0 REVEGETATION - RECLAMATION 4.1 Pipeline ROW The pipeline traverses a variety of terrain including open irrigated meadows, small intermittent drainages, the riparian area of Mamm Creek and drier ridge top areas and hillsides. The majority of the pipeline route follows an existing gas and water line that has previously been disturbed (Photo 4). The pipeline will disturb an area approximately 75 feet in width for a length of about 3.27 mile resulting in approximately 29.66 acres of disturbance. The vegetation ranges from irrigated grass meadows to varying native vegetation depending on the site. Successful reclamation of the project area is dependent upon soil type and texture, aspect, slope, proper weed control and revegetation with suitable plant species. WestWater Engineering Page 12 of 17 3/18/2008 Photo 4. Existing Gas Line and Water Line in ROW on Hunter Mesa The February 6 and 12, and March 11, 2008, survey noted chicory, houndstongue, Russian knapweed, bull thistle, downy brome and tamarisk in the pipeline ROW. Other problematic weeds noted were Russian thistle and kochia. It is likely that other weeds exist in this area because of the previous disturbance, making weed control in this location an important part of the reclamation. Construction of the new pipeline will create a new disturbance that could allow additional weeds to gain a foothold unless an effective monitoring and weed control program is implemented. Based on the soil types, terrain, and the presence of noxious weeds in the pipeline ROW, successful reclamation is most likely if a seed mix of grasses is used (Tables 7 and 8). This will allow control of noxious weeds while establishing vegetation in the disturbed areas. Two seed mixes are presented based on soil type and available moisture; one for the drier juniper/sagebrush sites and one for the meadow/riparian sites with more moisture. For best results and success, the recommended grass mixture reseeding should be done in late autumn. The reseeding rate should be doubled for broadcast application (CNHP 1998). Preferred seeding method is multiple seed bin rangeland drill with no soil preparation other than simple grading to slope and imprinting and waterbars where applicable. WestWaterEngineering Page 13 of 17 3/18/2008 0 ct C 0 C, a:.a y Qs .b d O L. • cipH 0 • CA 40 SPrt rt [4 DO E ',d L q o L • O N d P - -0 8 O E o C.4 L. g c q q 1 03 0 H 1c d (/) V AI A Plant the Following (10% Total) 01 --� and Both of the Following (15% Each, 30% Total) V1 N 00 N and One of the Following (20% Total) .7t. M M and Two of the Following (40% Total) CO O CO O l� N Form Bunch Bunch Bunch Sod -forming Bunch Bunch Bunch Bunch Season U 3 U U U 0 U U d Nezpar, Paloma, Rimrock Viva florets Secar, P-7, Anatone Critana, Schwendimar San Luis Scientific Names Achnatherum [Oryzopsis] hymenoides Pleuraphis [Hilaria] jamesii Pseudoroegneria spicata, Agropyron spicatum Elymus lanceolatus ssp. lanceolatus, Agropyron dasystachyum Elymus trachycaulus, Agropyron trachycaulum Poa fendleriana Poa sandbergii, Poa secunda Elymus elymoides, Sitanion hystrix Common Name Indian Ricegrass 0 Bluebunch Wheatgrass Thickspike Wheatgrass Slender Wheatgrass Muttongrass Sandberg Bluegrass Bottlebrush Squirreltail 00 O O 00 M WestWater Engineering 0? CA U g A Plant Both of the Following (20% Each, 40% Total) 00 vi M en and Three of the Following (20% Each, 60% Total) .n ni 4.8 d' en N --- cO 0 Form Bunch Bunch Bunch Bunch Sod -forming _ cov W 0 0 w b 0 N 0 tO 0 U 0 U 0 U look 0 U 0 U 0 U d t o 0 San Luis o o 7.1 Q Critana, Schwendimar Joseph Scientific Names Bromopsis [Bromusj marginatus Elymus trachycaulus, Agropyron trachycaulum Achnatherum [Stinal lettermanii Elymus glaucus Elymus lanceolatus ssp. lanceolatus, Agropyron dasystachyum Festuca idahoensis Poa nervosa Common Name Mountain Brome Slender Wheatgrass Letterman NeedleOrass 0 b 0 o 7 CO Thickspike Wheatgrass Idaho Fescue Wheeler Bluegrass *Based on 60 pure live seeds (PLS) per square foot, drill -seeded Double this rate (120 PLS per square foo0 if broadcast or hydroseeded 00 0 0 00 M N 0 O kin 0 co WestWater Engineering Alternative seeding methods include, but are not limited to: • harrow with just enough soil moisture to create a rough surface, broadcast seed and re - harrow, preferably at a 90 degree angle to the first harrow; • hydro -seeding (most economical in terms of seed cost); and • hand raking and broadcast followed by re -raking at a 90 degree angle to the first raking. • These are not the only means of replanting the site. However, these methods have been observed to be effective in similar landscapes. After desired grasses are established and control of target weed species is successful, then shrubs, forbs and trees can be planted without concern for herbicide damage. Few native forb seeds are available commercially as cultivars. Most are collected from natural populations. Native shrubs and forbs often do not establish well from seed, particularly when mixed with grasses. Past experience has shown that stabilizing the soil with grasses, accomplishing weed control, and then coming back to plant live, containerized woody species in copses has been the most cost effective method for establishing the woody species component of the plant community. For the pipeline ROW, grasses should be drilled after construction activities cease and the equipment removed from the site. After two years of controlling weeds (with herbicides) and allowing the grasses to become established, the forbs and woody species should be inter -seeded or hand -planted to increase the diversity and value of the reclamation plantings. 5.0 REFERENCES Barrow, J. R., and Bobby D. McCaslin. 1995. Role of microbes in resource management in arid ecosystems. In: Barrow, J. R., E. D. McArthur, R. E. Sosebee, and Tausch, R. J., comps. 1996. Proceedings: shrubland ecosystem dynamics in a changing environment. General Technical Report, INT -GTR -338, Ogden, Utah: U.S. Department of Agriculture, U.S. Forest Service, Intermountain Resource Station, 275 pp. Boerboom, C. 1999. Herbicide mode of action reference. Weed Science, University of Wisconsin, 5 pp. CNHP. 1998. Native Plant Re -vegetation Guide for Colorado. Colorado Natural Heritage Program, Caring for the Land Series, Vol. III, State of Colorado, Division of Parks and Outdoor Recreation, Department of Natural Resources, Denver, 258 pp. CWMA. 2007. S. Anthony, T. D'Amato, A. Doran, S. Elzinga, J. Powell, I. Schonle, K. Uhing. Noxious Weeds of Colorado, Ninth Edition. Colorado Weed Management Association, Centennial. Hartzler, Bob. 2006. Biennial thistles of Iowa. ISU Extension Agronomy. URL: http://www.weeds.iastate.edu/mgmt/2006/iowathistles.shtml Kershaw, L., A. MacKinnon, and J. Pojar. 1998. Plants of the Rocky Mountains. Lone Pine Publishing, Auburn, Washington. WestWater Engineering Page 16 of 17 3/18/2008 NRCS. 2002. Plant materials technical note 59. U.S. Department of Agriculture, Natural Resource Conservation Service, Colorado State Office, Lakewood, 54 pp. NRCS. 2007. The PLANTS Database (http://plants.usda.gov, 7 September 2006). National Plant Data Center, U.S. Department of Agriculture, Natural Resource Conservation Service, Baton Rouge, Louisiana 70874-4490. NRCS. 2008. Web Soil Survey, U.S. Department of Agriculture, Natural Resource Conservation Service, URL: http://websoilsurvey.nres.usda.gov Sirota, J. 2004. Best management practices for noxious weeds of Mesa County. Colorado State University Cooperative Extension Tri River Area, Grand Junction, Colorado. URL: http://www.coopext.colostate.edu/TRA/PLANTS/index.html#http://www.coopext.colosta te.edu/TRA/PLANTS/bindweedmite.html State of Colorado. 2005. Rules pertaining to the administration and enforcement of the Colorado Noxious Weed Act, 35-5-1-119, C.R.S. 2003. Department of Agriculture, Plant Industry Division, Denver, 78 pp. Tischler, Crystal. 2006. District Forester, Colorado State Forest Service, Salida, Colorado. Personal communication with Bill Clark, WestWater Engineering, Grand Junction, Colorado. Whitson, T. D. (editor), L. C. Burrill, S. A. Dewey, D. W. Cudney, B. E. Nelson, R. D. Lee, and R. Parker. 2001. Weeds of the West - 9'h edition. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming, Laramie. WestWater Engineering Page 17 of 17 3/18/2008 Comments In ROW east of Dunn 5-9 11 Photo MRG CYOF 01P'i MRG CIIN 01P 00 zz 000 z z z to ? } ON ON 0 z MRG BRTE 01P Continuous Weeds Start/Sto c c X aN it <10 o v <10 <10 0 v 0o v 0 A 0 0 A <10 0 0 A Unknown >500 Northin 4372345 4372671 4372672 4372689 4372739 4372681 4372581 4372643 4372707 4372755 Unknown 4372263 0) c to w 268043 269608 269664 269700 269385, 269949 269954 268657 268770 268787 Unknown 270820 1 0 N co ` co co co M 13S 13S 13S 13S co r 13S co e w A p a V CYOF Z U ACRE3 CIVU ACRE3 Z z U U TARA Z U Z U BRTE BRTE 2 2 o. houndstongue 0 U_ L 0 Russian knapweed V bull thistle Russian knapweed 0 0 00 U U LL 0 0 tamarisk 0 U t 0 U L 0 downy brome downy brome APPENDIX A WestWater Engineering WILDLIFE IMPACT AND SENSITIVE AREAS REPORT East Dry Hollow Loop Phase 1 Pipeline Garfield County, Colorado • i vmst 41, a• Cover Photo: Mule deer in sagebrush .75 miles east of Hunter Mesa Compressor Station. Prepared For: EnCana Oil and Gas (USA), Inc. Prepared by: WestWater Engineering 2570 Foresight Circle #1 Grand Junction, CO 81505 March 2008 INTRODUCTION EnCana Oil and Gas (USA), Inc. (EnCana) has requested WestWater Engineering (WWE) to provide a "Wildlife Impact and Sensitive Areas Report" for a proposed "special use permit" in Garfield County, Colorado. EnCana is seeking the special use permit to install a 20 -inch gas pipeline from their Hunter Mesa compressor station to well pad OlE east of West Divide Creek. Phase I of this pipeline begins at the Hunter Mesa compressor station and terminates at well pad P4E (Figure 1). Phase I pipeline segments are situated in Sections 4, 5, 6, 7 and 9 of T7S, R92W, of the 6th P.M., Garfield County, Colorado (Figure 1). This report pertains to the Phase I portion of the proposed pipeline that is approximately 3.3 miles in length and utilizes a 25 foot permanent right-of-way (ROW). The potential area of disturbance for the Phase I portion, incorporating "temporary work spaces", is approximately 29.66 acres. In preparation for developing the following report, WWE biologists performed field surveys and assessments of wildlife, wildlife habitats, and habitats for sensitive plant species on the proposed Phase 1 pipeline alignment and surrounding area. WWE conducted the surveys on February 6 and 12, 2008; and, a survey was conducted on March 11, 2008, to incorporate a 0.25 mile added segment west of well pad P4E. Approximately 16-24 inches of snow blanketed the Phase 1 pipeline alignment and surrounding area on the field survey days in February (Cover Photo and Photo 2); the snow depths of the March 11, 2008, survey ranged from 0 to 12 inches with scattered areas of open ground exposed as a result of recent snow melt. The purposes of the surveys were to determine those wildlife and sensitive plant species that occupy the project area at varying periods during the year and which would potentially be impacted as a result of the pipeline construction and operational activities. Factors considered include soil type and texture, existing land management, absence or presence of wildlife and plant species, habitat designations by Federal and State wildlife agencies, and the present natural vegetation community. This report provides written documentation that describes survey findings as well as recommended mitigation measures to help offset potential impacts to wildlife and sensitive plants that occupy the project site and adjacent area. This assessment and mitigation plan meets the wildlife requirement of Garfield County Regulation 9.07.04 (10) (Board of County Commissioners 2006). BACKGROUND INFORMATION Descriptions of critical habitats for federally -listed threatened, endangered and candidate fish and wildlife species were reviewed in the Federal Register, U. S. Department of the Interior, Fish and Wildlife Service (USFWS). Wildlife habitat (activities) maps, provided via the internet web by the Colorado Division of Wildlife's (CDOW) "Natural Diversity Information Source" (NDIS), were reviewed and incorporated into this report in reference to state -listed threatened, endangered and species of "special concern"(CDOW 2008a). A list of Birds of Conservation Concern (BOCC) and their habitats for the Southern Rocky Mountain Region and the Colorado Plateau was reviewed. This list is published by the USFWS through a Memorandum of Understanding with the Bureau of Land Management (BLM) and the US Forest Service (USFS) that places high conservation priorities for BOCC species (USFWS 2002). Not all of these BOCC species occur regularly in Colorado, some are present only as WestWater Engineering Page 1 of 22 pages March 2008 W J W eo k. U ft" 7.44.44 E4 -..c'' 44. W F2 \27 mow. - FFF 4 M O 0) a EnCana Oil & Gas (USA) Inc. a 0 0 -J O N C C 0) y w?a S T 0 y O as a Ci V1 v� 6 c0 M rnm U) � n MZ6 SL MC6 at N ti 0, Nests seasonal migrants. Of those known to breed in Colorado, only a portion are known or suspected to breed within the vicinity of the proposed pipeline. Avian literature sources such as the "Birds of Western Colorado Plateau and Mesa Country" (Righter et al. 2004) and the "Colorado Breeding Bird Atlas" (Kingery 1998) were reviewed to determine the likelihood for species occurrence within the project area. Bird identification and taxonomic nomenclature are in accordance with that applied by the Colorado Breeding Bird Atlas Project (Kingery 1998). Mapped soil types, as published by the Natural Resources Conservation Service (NRCS), U. S. Department of Agriculture, were reviewed to determine the soil types and vegetation characteristics of the project site and surrounding property (NRCS 2008). The determination of the presence/absence of suitable habitat for Threatened, Endangered and "Sensitive Species" plants (TESS) was based on previous WWE observations of typical habitat occupied by BLM or USFS sensitive plants, the Colorado Natural Heritage Program (CNHP) Rare Plant Field Guide (Spackman et al. 1997), and locations of species documented in the CNHP statewide database. LANDSCAPE SETTING General Description The proposed pipeline is located on private lands, about 5.5 to 7.0 miles south and southeast of the Town of Rifle; and is about 4.5 to 5.0 miles south of the Colorado River. Beginning at the compressor station, the pipeline traverses eastward through an open meadow with several shallow drainages, following an existing gas and waterline ROW to County Road 315 (Mamm Creek Road). The pipeline then crosses Mamm Creek heading in a northeasterly direction following portions of the existing ROW and access roads to well pad P4E. This section of the pipeline ascends through a natural drainage to the top of the ridge where it passes through meadows lying adjacent to the access roads for well pad P4E. The topography in the Phase I section of the pipeline is generally flat to rolling meadows with shallow drainages cutting across the mesas. The Mamm Creek drainage has moderately steep hillsides with the creek lying about 340 feet below the surrounding mesas. The terrain west of the Mamm Creek pipeline crossing is moderately steep while the terrain to the east rises gradually to the mesa area where well pad P4E is located (Photo 1). Elevations range from 5,775 to 6,115 feet along the Phase 1 pipeline route. Numerous natural gas well pads are adjacent to the pipeline alignment. Rural residences are widely spaced in the vicinity of the proposed pipeline alignment along County Road 315 and the Hunter Mesa area. High-voltage overhead power lines intersect the pipeline alignment in Section 7 on Hunter Mesa and in Section 4 by well pad P4E. The primary use of the surrounding area of the pipeline is agriculture/rangeland, wildlife habitat and recent natural gas extraction/development. WestWater Engineering Page 3 of 22 pages March 2008 Photo 1. East view of pipeline alignment crossing County Rd 315 and Mamm Creek drainage Photo 2. Snow depth and vegetation condition for survey on Hunter Mesa, February 6, 2008 WestWater Engineering Page 4 of 22 pages March 2008 Soils There are four primary types of soil found within the proposed pipeline corridor; Arvada loam, Olney loam, Potts loam and Torriorthents-Camborthids-Rock outcrop complex (NRCS 2008). Arvada loam is found in the riparian area adjacent to Mamm Creek with slopes of 1 to 6 percent; derived from saline sandstone alluvium; having severe limitations for land capability; unsuitable for cultivation; and primary use being grazing, recreation and wildlife habitat. The Olney and Potts loams are characteristic of the meadows on the mesas having slopes of 6-12 percent; derived from sandstone -shale alluvium; having very severe and severe limitations for land capability; and requiring "very special" and "special" management for production. The Torriorthents-Camborthids-Rock outcrop complex is found on steep hillsides, such as the slope west of the Mamm Creek crossing, having slopes of 15 to 70 percent; derived from basalt - sandstone -shale alluvium; having very severe limitations for land capability; unsuitable for cultivation; and primary use being grazing, recreation and wildlife habitat. The native vegetation of the Olney and Potts loam soils is typically western wheatgrass (Pascopyrum smithit), bluebunch wheatgrass (Pseudoroegneria spicata spicata), big sagebrush (Artemesia tridentata spp.), needle and thread grass (Hesperostipa comata), Indian ricegrass (Achnatherum hymenoides), rubber rabbitbrush (Chrysothamnus nauseosus) and bottlebrush squirreltail (Sitanion hystrix). The vegetation generally associated with Arvada loam soils includes western wheatgrass, inland saltgrass (Distichlis spicata), alkali sacaton (Sporobolus airoides), winterfat (Krascheninnikovia lanata), greasewood (Sarcobatus vermiculatus), Gardner's saltbush (Atriplex gardneri) and bottlebrush squirreltail. NRCS does not list plant species associated with the Torriorthents-Camborthids-Rock outcrop complex. Veuetation The meadows of Hunter Mesa and the area east of Mamm Creek appear to be irrigated and are occupied by unknown grass species and sparse numbers of shrub species such as sagebrush and rabbitbrush (Photo 2). These meadows have small drainages inhabited by Utah juniper (Juniperus utahensis), sagebrush, rabbitbrush, four -winged saltbush (Atriplex canescens), mountain mahogany (Cercocarpus montanus) and sumac (Rhus trilobata). Ridges and rocky slopes of steeper terrain are inhabited primarily by Utah juniper, pinon pine (Pinus edulis) sagebrush and scattered mountain mahogany. Mamm Creek supports riparian habitat consisting of narrow -leaved cottonwood (Populus angustifolia), wild rose (Rosa woodsii), tamarisk (Tamarix ramosissima) and scattered big basin sagebrush. A snow depth of 16-24 inches during the February surveys prohibited the observation and identification of most grasses, forbs and weeds throughout the survey area. Cheatgrass (Bromus tectorum) was observed as the dominant grass species in the area of the P4E well pad during the March 11, 2008, survey. SURVEY METHODS A preliminary roadside survey was conducted throughout the project area to familiarize personnel with vegetation types and terrain as an aid to help determine the likelihood of the presence of threatened, endangered or sensitive wildlife and plant species. The general project location, boundaries and reported features were verified and/or recorded with the aid of a handheld global positioning system instrument (GPS) that utilized NAD83/WGS84 map datum, with all coordinate locations based on the Universal Transverse Mercator (UTM) coordinate system within Zone 13S. WWE biologists physically surveyed the area within 60 feet of both WestWater Engineering Page 5 of 22 pages March 2008 sides of the pipeline alignment to identify and locate wildlife species, wildlife sign (tracks, fecal droppings, vegetation disturbance), vegetation communities and wildlife habitats. Vegetation types were determined through field identification of plants, aerial photography and on -the - ground assessments of plant abundance. Identification of plant species was aided by using pertinent published field guides (Whitson et al. 2004, CWMA 2007, Kershaw et al. 1998). Visual searches for raptor and other bird species nests were focused on the pinon pine, Utah juniper, and narrow -leaved cottonwood trees within a 0.25 mile distance from the pipeline's centerline. These searches included the rock outcrop east of Mamm Creek. Nest searches and bird identification were aided with the use of binoculars and song recognition, where needed. Photographs were taken of the general project location, surrounding vegetation and terrain, and specific biological findings. RESULTS OF SURVEY TESS Plant Species Special status species of plants that may be present in the project area, and their habitats, are listed in Tables 1 and 2 below in three categories: 1) Federally Listed Threatened or Endangered (no species), 2) Federal Candidate Species (1 species), and 3) BLM and USFS Sensitive Species (1 species). Nomenclature and habitat descriptions are based on the CHNP literature (Spackman et al. 1997). Table 1. Potential Federally -listed Threatened, Endangered and Candidate plant species Scientific Name Common Name Status* Habitat Preference Penstemon haringtonii Harrington beardtongue C Rocky loam, rocky clay loam derived from coarse calcareous parent materials; open sagebrush or, less commonly, pifion - juniper. Elev. 6500-9,200 ft. Found in Garfield County on Grass Mesa. * E= Federal Endangered, T= Federal Threatened C= Federal Candidate Table 2. Potential BLM and FS sensitive plant species Scientific Name Common Name Habitat Preference Penstemon haringtonii Harrington beardtongue Rocky loam, rocky clay loam derived from coarse calcareous parent materials; open sagebrush or, less commonly, pinon-juniper. Elev. 6500-9,200 ft. Found in Garfield County on Grass Mesa. Results: No TESS plant species and/or their habitats were observed within the survey area of the proposed pipeline. The highest elevation of project area is approximately 6,115 feet, about 350 feet below the known lower elevation limit for Harrington beardtongue (Penstemon Haringtonii). Federal Listed Threatened, Endangered, Candidate Wildlife Species No federal listed threatened, endangered or candidate wildlife species occupy the area of the proposed pipeline alignment and, thus, none of these species will be affected as a result of the WestWater Engineering Page 6 of 22 pages March 2008 proposed project. Habitats for these species do not occur on the project site or the immediate area. State Listed Threatened, Endangered Special Concern Wildlife Species WWE biologists determined that two state listed threatened or endangered species may occur within the project area and are listed in Table 3 below (CDOW 2008b). Potential state species of special concern are also listed. Table 3. Potential State -listed Threatened and Endangered wildlife species Scientific Name Common Name State Status Habitat Preference Haliaeetus leucocephalus Bald Eagle T Open Water — Lakes, Forested Wetlands, Shrub Dominated Wetlands, Grass/Forb Dominated Wetlands; occurs in Garfield County; common winter migrant along stream corridors; elevation: 3,000 - 8,000 ft Vulpes macrons Kit Fox E Xeric Upland Shrub, Pinyon -Juniper, Bitterbrush Shrub, Mountain Big Sage, Wyoming Big Sage, Big Sagebrush Shrubland, Desert Shrub, Saltbrush Fans & Flats, Greasewood Fans & Flats, Sand Dune (Shrubland), Disturbed Shrubland, Mixed Rangeland, grassland complexes; elevation: 4,500 - 6,500 ft CorynorhinuS townsendii pallescens Townsend's Big -eared Bat SC Mesic Upland Shrub, Xeric Upland Shrub, Deciduous Oak Bitterbrush Shrub, Mountain Big Sage, Wyoming Big Sage Big Sagebrush, Shrubland, Desert Shrub, Saltbrush Fans & Flats Greasewood Fans & Flats, Sand Dune Complex (Shrubland) Disturbed Shrubland, Juniper, Pinyon -Juniper, riparian; elevation: 3,000 — 9500 ft Rana pipiens Northern Leopard Frog SC Standing or running water along w/other habitat types, Deciduous Oak, Bitterbrush Shrub, Mountain Big Sage Wyoming Big Sage, Big Sagebrush Shrubland, coniferous and deciduous woodlands; occurs in Garfield County; elevation: 3,000-11,000 ft. E= State Endangered, T= State Threatened, SC = Species of Concern During the surveys no state listed threatened or endangered wildlife species were observed in the area of the proposed pipeline alignment. Bald Eagle may visit areas along Mamm Creek and adjacent mesas and slopes in search of winter forage in the form of fish and dead animal carcasses. No Kit Fox denning sites were observed in the area of the pipeline alignment. Potential foraging habitat for Kit Fox occurs within the area of the pipeline alignment. Habitats for bat species for roosting, breeding and hibernating, in the form of caves, mine shafts, walls and cliffs, do not occur on the property. Townsend's Big -eared Bat can occur in the area while foraging (CDOW 2008a). Potential habitat occurs along the stream corridor of Mamm Creek for Northern Leopard Frog. Breeding habitat for Northern Leopard Frog, in the form of shallow and quiet areas of water, do not occur in the area of disturbance for the pipeline. WestWater Engineering Page 7 of 22 pages March 2008 Birds of Conservation Concern (BOCC) Raptors: Several raptor species (birds of prey) nest, reside, forage or pass through the general area of the pipeline project. Raptor species that are common to the area include Golden Eagle, Red-tailed Hawk, American Kestrel, Cooper's Hawk and Great -horned Owl. Bald Eagle, a common winter migrant, is discussed in Table 3 of this report. Numerous pifion pine, Utah juniper and cottonwood trees encountered along and adjacent to the pipeline alignment are of sufficient height and density for tree nesting raptors. The small rock outcrop east of Mamm Creek and north of the pipeline and west of the J5 well pad revealed no past raptor nesting activity; this rock outcrop appears marginally suitable for raptor nesting. Raptor species that are listed as BOCC in the Southern Rockies and the Colorado Plateau, and which may occur in the project area are listed in Table 4. In addition to the BOCC list, seven other species of raptors that could potentially be found nesting in the pipeline project area are also listed in Table 4. Table 4. Raptor species that may be present in the project area Common Name Scientific Name BOCC Habitat & Breeding Records Northern Harrier Circus cyaneus Y • Grassland, shrubland, agricultural areas, and marshes. Nests in areas with abundant cover (e.g., tall reeds, cattails, grasses) in grasslands and marshes. Also known to nest in high -elevation sagebrush. Cooper's Hawk Accipiter cooperii N • Cottonwood riparian to spruce/fir forests, including pirion/juniper woodlands. Nests most frequently in pines and aspen. Sharp -shinned Hawk Accipiter afflatus N • High density young, or even -aged, stands of coniferous forest and deciduous forests of aspen or oak brush with small stands of conifers. Red-tailed Hawk Buteo jamaicensis N • Diverse habitats including grasslands, pifion-juniper woodlands and deciduous, coniferous and riparian forests. Nests in mature trees (especially cottonwood, aspen, and pines) and on cliffs and utility poles. Swainson's Hawk Buteo swainsoni Y • Typically, arid grassland, desert, agricultural areas, shrublands and riparian forests. Nests in trees in or near open areas. Golden Eagle Aquila chrysaetos Y • Grasslands shrublands, agricultural areas, pifion- juniper woodlands, and ponderosa forests. Prefers nest sites on cliffs and sometimes in trees in rugged areas. American Kestrel Falco spatverius N • Coniferous and deciduous forests and open terrain with suitable perches. Nests in cavities in trees, cliffs and buildings. Peregrine Falcon Falco peregrinus Y • Pit -ion -juniper woodlands and coniferous and riparian forest near cliffs. Nests on ledges of high cliffs away from human disturbance. WestWater Engineering Page 8 of 22 pages March 2008 Table 4. Raptor species that may be present in the project area Common Name Scientific Name BOCC Habitat & Breeding Records Prairie Falcon Falco mexicanus y • Grasslands, shrublands, and alpine tundra. Nests on cliffs or bluffs in open areas. Great Horned Owl Bubo virginianus N • Occupies diverse habitats including riparian, deciduous and coniferous forests with adjacent open terrain for hunting. Northern Saw- whet Owl Aegolius acadicus N • Mountain and foothills forest and canyon country. Significant use of pition-juniper woodland and Douglas -fir. Long-eared Owl Asio otus N • Occupies mixed shrublands. Nests and roost in sites in dense cottonwoods, willows, scrub oak, junipers and dense forest of mixed conifers and aspens. Two raptor nests of unknown status were observed along the proposed pipeline. Both nests are stick nests located in different habitat types. One nest is situated in a mature cottonwood tree (RTHA-1) in the riparian habit along the west side of Mamm Creek about 300 feet north of the pipeline alignment and about 300 feet west of well pad J5 (Figure 1 and Photo 3). The second nest is in a mature Utah juniper tree (UNKN-1) in the open meadow southeast of well pad N4E along the pipeline access road (Figure 1 and Photo 4). WWE biologists assigned nest sites to specific raptor species based on knowledge of raptor occurrence in this area, as well as design, location, materials, and configuration of nesting structures. During the March 11, 2008, survey one adult Red-tailed Hawk was observed perched on the RTHA-1 nest. On this day two adult Red-tailed Hawks were observed soaring above the Mamm Creek drainage about 0.5 miles south of the RTHA-1 nest. Raptor nest locations are reported as follows: UNKN-1 (UTM 13s 270235mE, 4372318mN): Nest is in a 15 foot high juniper, tree DBH = 10 inches, nest height = 12 feet, nest diameter = 15 inches, nest depth = 6 inches, slope = 0 per cent, aspect = 15 degrees. Nest is possibly that of an accipiter (Cooper's Hawk) or Great -Horned Owl. Status is unknown. First observed on February 12, 2008. No activity observed on this nest on March 11, 2008. RTHA-1 (UTM 13s 268638mE, 4372824mN): Nest is in a 50 foot cottonwood tree, tree DBH = 18 inches, nest height = 45 feet, nest diameter = 28 inches, nest depth = 12 inches, slope = 1 per cent, aspect = 10 degrees. Nest is likely that of a Red-tailed Hawk. Status is unknown. First discovered on February 12, 2008. One adult Red-tailed Hawk observed perched on the nest on March 11, 2008; nesting status is undetermined. WestWater Engineering Page 9 of 22 pages March 2008 Photo 3. Red-tailed Hawk perched by RTHA-1 nest Photo 4. Possible raptor nest in juniper tree near well pad N4E WestWater Engineering Page 10 of 22 pages March 2008 Birds of Conservation Concern (BOCC) other than raptors: In addition to raptors discussed above, WWE biologists surveyed the proposed pipeline route for the presence of sensitive or migratory BOCC that could potentially occur in the project area. BOCC habitat and nesting records, as described in the Colorado Breeding Bird Atlas (Kingery 1998, and references therein), Colorado Birds (Andrews and Righter 1992) and Birds of Western Colorado Plateau and Mesa Country (Righter et al. 2004) in the vicinity of the pipeline are summarized in Table 5. Table 5. BLM sensitive & migratory bird species that may be present in the project area Common Name Scientific Name Habitat & Breeding Records Pinion Jay Gymnorhinus cyanocephalus • Piilon-juniper woodlands; nests in piiions or junipers. • Confirmed breeder in Garfield County in the vicinity of the pipeline. Brewer's Sparrow Spizella breweri • Sagebrush, greasewood and rabbitbrush in desert valleys; nests in sagebrush. • Confirmed breeder in Garfield County in the vicinity of the pipeline. Black -throated Gray Warbler Dendroica nigrescens • Mature pinon-juniper woodlands; nests on horizontal branches in pinonorjuniper. • Confirmed breeder in Garfield County in the vicinity of the pipeline. Lewis' Woodpecker Melanerpes lewis • Open stands of cottonwood and ponderosa pine; nests in cottonwood in riparian settings, ponderosa pine and aspen. • Possible breeder in Garfield County. Greater Sage- Grouse Centrocercus urophasianus • Large continuous areas of sagebrush on flat or gently rolling terrain with open areas in vicinity for leks; nests in herbaceous areas within sagebrush. • Listed as historic occurrence south of the Colorado River in Garfield County. The quality of the sagebrush in the area of the pipeline project is suitable for nesting Brewer's Sparrow. The pinon and juniper woodlands associated with the project area are suitable nesting habitats for Pinyon Jay and Black -throated Gray Warbler. The cottonwood riparian vegetation along Mamm Creek appears to be suitable nesting habitat for Lewis' Woodpecker. No BOCC species were observed during the surveys since the surveys were not conducted during the breeding or nesting periods. CDOW NDIS mapping places the pipeline segment on Hunter Mesa within "historic habitat" for Greater Sage -grouse, additionally listed as a State species of "special concern". CDOW defines "historic habitat" for Greater Sage -grouse as "areas where viable populations have not occurred in five years or more". Little habitat for Greater Sage -grouse is currently found on Hunter Mesa as a result of past vegetation conversion from native sagebrush to agricultural use. No evidence of Greater Sage -grouse was observed during the February 2008 survey. Terrestrial Species American Elk and Mule Deer: CDOW places the proposed pipeline within Game Management Unit (GMU) 42. In GMU 42 the pipeline is situated within mule deer and American elk overall range and winter range. For elk the entire pipeline alignment is categorized as severe winter range; the pipeline segment within Sections 6, 7, and the west portion of Section 5 is categorized as a winter concentration area (Figure 2). For mule deer, the project locations within Section 4, 5, 9, and the northeast portion of Section 6 is categorized as severe winter WestWater Engineering Page 11 of 22 pages March 2008 range; the pipeline segment within Section 5 is additionally categorized as a winter concentration area (Figure 3). CDOW defines "winter range" as "that part of the overall range where 90 percent of the individuals are located during the average five winters out of ten from the first heavy snowfall to spring green -up". CDOW defines a "winter concentration area" as "that part of the winter range where densities are at least 200 percent greater than the surrounding winter range density during the same period used to define winter range in the average five winters out of ten". "Severe winter range" is defined as "that part of the range of a species where 90 percent of the individuals are located when the annual snowpack is at its maximum and/or temperatures are at a minimum in the two worst winters out of ten." During the surveys, numerous deer, fresh tracks, beds, antler rubs and fecal pellets were observed in areas where sagebrush and/or pinon pine and juniper trees were present (Cover Photo). Significant browsing by deer on available sagebrush and rabbitbrush was observed where these plant species occurred, especially on the slopes adjacent to Mamm Creek and the riparian area adjacent to Mamm Creek (Photo 5). Due to the lack of available forage, the open meadows of Hunter Mesa and the area of well pad N4E exhibited few activities by deer. Mule deer had recently bedded beneath the pinon pine and juniper trees that inhabit the pipeline alignment and surrounding area. Elk tracks and trails were observed traversing the meadows adjacent to well pad P4E (Photo 6). Numerous elk were observed within the Mamm Creek drainage north of the pipeline alignment to the Colorado River, indicating significant winter use of the general area by this species. For the project area, during winter periods when deep snow covers low-lying vegetation, mule deer rely on the existing sagebrush above the snow for their primary food source, while elk rely primarily on available grasses for food. Adjacent areas of pinon pine and juniper trees provide necessary escape, thermal and loafing cover for deer and elk (Photo 7) Photo 5. Browsed sagebrush and mule deer tracks east of Mamm Creek WestWater Engineering Page 12 of 22 pages March 2008 Custom Map Created at Natural Diversity Information Source etm to re 11, R 25.. i_ n� y q�i1 �£C �1 q y Tr coil d f' W sem, A m nnD - ‘k, litw‘v.,`.n III! nlIlIIIl111n11!Ill 11I11IIII1II11111I11! 111, 1 11111111111111111111,111,11 lllll 1 1911111111111111111!;119.1 11111 1111111111111:11111111 IIIIIn11111111i1,11II 1i!1�. 1711111111111111 IIi!111111111111110. I I1111111I111 1111+:!11111111111111111111111111111 111111111111' IIIII11111111111flffl] PrP I i.cl 1. ii ii3i2i:i "1 111!_13 ;ifs f; =___ :..ii>11 iii;f !IJ 1 1111 1} ` {jj� I •;1 1 { ' • II Milli : 111 . '1;11111 r 14_1 II I 1f6{ 1i�{1 $1 11111 111111111111111i`I111111'111 :1101: 11111 I< 1l11111 1111�{1111111 11 IIIIIIII;IIIIIUITIII11UIIi1.11 lll,lifll ii 1 11111 IIn11I17:�a"'II:.1I�IR1�i, 9 11 1 n61111I11!Illnll! IlI" ,'• un I! 111111_1 1 111 111111111111.1-'.��Tiia!ffl!IIlHIII91Illlll!`fi 1 t 1 11 111111 IIIIIIIIIIIIHIIu .uI 1111111, 1111!1 1� 1 nnlllllnlll1lII.lI,,—'"4P�"ml1111111illlllali;nl i 1 i:1 u11IIllnnlnil rulll 11 11111 1!11131 ■ i 1 : ..1 ••1i 1 11 111.:1 L 9:9...........l....1:111I111 111 1 11. 1.9:4:'7=1 i Figure 2. American Elk Habitat Activities for the Mamm Creek Area (CDOW). March 2008 Page 13 of 22 pages WestWater Engineering 08,;,1 1,0I(V1� S J 'U .i 1 . `' ii i Ill rill • It� I Custom Map Created at Natural Diversity Information Source 1CP igt) c g .g cca d 2- I .., c, it C 1:1 � � '� 0 c I, Mu o 0 0 , m U as co a, a, ; c x oda' 3s 7Q as G a azvJ w0 ro - ZX MU 2 2 u 0 O i �n :2 u. di a3vLJ T m LOU taVzs`.,' ❑ VO non ;7w1;. - ' i . .IIRaVI .1..1/...:., i ° • tt�-" tylA March 2008 Page 14 of 22 pages WestWater Engineering Photo 6. Elk tracks crossing the meadow south of well pad P4E Photo 7. Deer in sagebrush and piiion/juniper trees north of pipeline alignment WestWater Engineering Page 15 of 22 pages January 2008 Black Bear and Mountain Lion: CDOW "NDIS" mapping shows the proposed pipeline to be within overall range for black bear and mountain lion. The vegetation of the proposed project site does not provide adequate food sources for black bear to be routinely attracted to the area. However, it is not uncommon for black bear to travel through the surrounding area during periods of short natural food supplies as bears search for food. During these periods black bears may be attracted to human -related food sources such as garbage and cooking areas. Mountain lion typically follow migrating deer herds in search of deer as the primary food source. Mountain lion have large territories and are highly mobile as they search for food or new territories. Mountain lion prefer to hunt in rocky terrain with trees or shrubs. This habitat condition occurs within the Mamm Creek drainage and mountain lion could travel through the area, especially when deer are present during the winter period. Small Mammals: Common small mammal species (small game, furbearers, non -game) include mountain cottontail, coyote, bobcat, striped skunk, porcupine, deer mouse and least chipmunk. A cottontail was observed on the property during the survey. Fringed myotis and Spotted bat are two bat species of the area that are considered "sensitive" by the BLM and would possibly forage for airborne insects through the area of the project property (Reid 2006). Townsend's big -eared bat is previously discussed in the section on "State Listed Threatened, Endangered Special Concern Wildlife Species". Roosting, breeding and hibernating habitats for bats in the form of caves, mine shafts, walls and cliffs do not occur on the pipeline alignment. Other Bird Species: The property's sagebrush, pinon pine, Utah juniper, cottonwood riparian and grass under stories provide nesting and foraging habitats for various other migratory and non -migratory bird species, depending on the season of the year (Photo 8). Bird species observed during the survey included House Finch, Black -billed Magpie, American Crow, Common Raven, Dark -eyed Junco, Mountain Bluebird, Black -capped Chickadee and Chipping Sparrow. A pair of Common Ravens was observed building a nest on top of a high voltage electric line tower about 150 yards north the pipeline by well pad P4E. The Mourning Dove is the most common game bird in the area (Righter et al. 2004) and likely nests in trees and ground settings throughout the property. Habitats for Wild Turkey do not occur in the area of the proposed pipeline and no sign of Wild Turkey was observed (CDOW 2008a). Reptiles: Plateau striped whiptail, sagebrush lizard, side -blotched lizard, plateau lizard, bullsnake, and western rattlesnake are reptiles common to this region and could occur in the vegetation and terrain of the project property (Hammerson 1999). Aquatic Species Amphibians: Great Basin spadefoot is an amphibian species that could occur on the property since it is common to the pinon/juniper woodland and sagebrush shrublands of the area (Hammerson 1999). This species breeds during summer periods in temporary pools in ravines and drainages that experience water flow after heavy rain events. Potential habitat for Northern Leopard Frog occurs along the stream corridor of Mamm Creek. WestWater Engineering Page 16 of 22 pages January 2008 Photo 8. Cottonwood tree in Mamm Creek riparian with avian cavity nests Fish: No fish inventories were conducted as part of this survey. CDOW personnel advise that, do to its sporadic low water flows, Mamm Creek may not support fish species in the area of the pipeline project (Spence 2008, pers. comm.). Mamm Creek, at the area of the pipeline project, may never have been surveyed for fish species (Elmblad 2008, pers. comm.). As of the date of this report, WWE requests to the CDOW for fish survey data pertaining to Mamm Creek have not been obtained. Therefore, it is not certain if fish species occur in Mamm Creek at the area of the pipeline project. Water flows in Mamm Creek were observed at the time of WWE field surveys and this stream likely supports aquatic invertebrates. Fish species do occur in the Colorado River that lies approximately 4.5 miles north of the project site. The soils of the pipeline project and adjacent drainages exhibit a high degree of erosion, which periodically affects silt loads and water quality of the Colorado River during significant runoff events. IMPACTS TO WILDLIFE Wildlife Impact Assessment Construction of the pipeline will directly disturb approximately 29.66 acres of native vegetation and wildlife habitat. Foreseen impacts would be (1) the loss of winter range to a small number of mule deer and elk that utilize this site, (2) the loss of foraging and nesting vegetation/habitat to a small number of bird species, and (3) the possible disturbance to a raptor nest along Mamm Creek a short distance north of the pipeline. The casual human disturbance that will be associated with the pipeline construction activities will indirectly cause some wildlife species to avoid the area, at least during the periods of human activity. Some species will become WestWater Engineering Page 17 of 22 pages March 2008 accustomed to the human activity while maintaining a distance that is tolerable. The impact to wildlife as a result of the pipeline installation and operation is relatively minimal and would not affect the overall status of wildlife populations of the area. The project and its ongoing activities will contribute; however, to the overall cumulative impacts to the wildlife populations of the area that are experiencing gradual habitat loss, fragmentation, alteration and displacement through increased development. MITIGATION RECOMMENDATIONS The following suggestions for mitigation are presented for maintenance and improvement of wildlife habitat quality as well as for the prevention of human -caused wildlife losses and/or conflicts. Maintenance and Restoration of Habitat In the Rocky Mountain Region sagebrush communities have declined over the years and continue to do so as a result of development and habitat conversion. Sagebrush is a key food source for wintering mule deer on this project site and provides nesting and foraging habitat for a variety of migratory birds and small mammals. The grass understory of the current sagebrush vegetation and adjacent meadows provides valuable forage for wintering elk. After disturbance and removal, it generally takes decades to return sagebrush to its current condition through natural vegetative succession. Deliberate planting of sagebrush is possible, yet costly. Native Wyoming and basin big sagebrush should be considered and added to the re -vegetation plan of disturbed soils once grass/forb plantings have established themselves. Seed from the existing sagebrush vegetation should be used to create wildlife forage that has a mix of grasses, forbs and sagebrush. Any further energy exploration and/or development on this property, such as future pipeline installations, should include efforts to maintain and/or restore the sagebrush community. Ongoing control of noxious and invasive weeds is recommended as an additional method to maintain native vegetation communities and favorable wildlife habitats. An "Integrated Vegetation and Weed Management Plan" is provided for this project in a separate report. Off-site Mitigation A temporary loss of approximately 29.66 acres of wildlife habitat will occur as result of habitat alteration for the pipeline installation. Habitat loss will be permanent in areas where vegetation reclamation is unsuccessful. Some species of wildlife will benefit when the disturbed vegetation of the pipeline corridor is reclaimed with introduced plant species; yet other species will not benefit as a result of a change in the native vegetation complex. For example, disturbance and removal of sagebrush will cause long term winter habitat loss to mule deer until native sagebrush becomes re-established. This habitat loss contributes to the overall cumulative impacts to wildlife as a result of increased development in this region. Efforts to conduct or contribute to off-site habitat mitigation in the local area, especially for deer and elk winter range, would help offset net habitat losses to these species. Off-site mitigation could be in the form of habitat improvement or habitat acquisition that protects key habitats in perpetuity. CDOW is a key agency to contact for suggestions and recommendations toward off-site wildlife habitat mitigation. WestWater Engineering Page 18 of 22 pages January 2008 Planning for Sensitive Time Periods Mule Deer and Elk: Wintering mule deer and elk would benefit if construction and/or energy exploration/development activities avoided the critical time for these species from December 1 to April 30. Energy industry activities are commonly limited during this time period on federal lands of the area in order to accommodate wintering mule deer and elk. Table 6 displays the most critical periods for deer and elk in the area of the pipeline project. Table 6. Seasonal critical periods in the area of the East Dry Hollow Phase I Pipeline Concern Period Deer and Elk severe (critical) winter range December 1 — April 30 Migratory Birds primary nesting season May 15 — August 1 Raptor nesting season February 1 — August 15 Migratory Birds: Vegetation clearing activities, in relation to construction and development projects, would have less impact to migratory birds if conducted outside the primary nesting season of May 15 to August 1 (Table 6). Raptors: Activities associated with the proposed project have the potential to impact raptor populations. In order to reduce the potential for impacts, if any active nests are located, it will be important that the project proponent schedule construction activities such that they do not interfere with breeding, nesting and brood rearing activities (Table 6). CDOW (Craig 2002) recommended raptor nest site avoidance standards for the species observed in this survey are summarized below (Table 7). If the project cannot be completed prior to, or after, the next nesting season, the known nest should be re -inventoried by qualified biologists. If any birds are found behaving in a manner consistent with nesting, every effort should be made to apply the timing limitation and buffer distance stipulations. Table 7. Colorado Division of Wildlife raptor active nest avoidance standards. Species Buffer Distance Avoidance Period (Seasonal Restirictions) Red-tailed Hawk 0.33 mile February 15 to July 15 Great -horned Owl No buffer recommended None Recommended Coopers Hawk 0.25 mile April 1 to August 15 Other Mitigation Practices Erosion Control and Soil Stability: Efforts to control soil erosion within the project area should be implemented. Disturbed soils within the pipeline corridor will be highly susceptible to erosion and downstream water quality could be negatively affected by increased soil erosion. Boring beneath Mamm Creek for the pipeline stream crossing would minimize disturbance to the soils and vegetation of the stream bed and banks, thus reducing downstream silt and sediment loads that can affect aquatic life. Fences: Numerous livestock fences will be dismantled and re -built as part of the pipeline construction project. Re -built fences that are designed for easy passage of deer and elk can allow these animals to utilize the native and planted vegetation for forage and move about the adjacent areas freely as they search for food and cover. In addition, properly designed fences will prevent WestWater Engineering Page 19 of 22 pages March 2008 deer and elk from being injured or suffering death as a result of becoming entangled as they attempt to jump over or pass through a fence. Generally, wire fences that do not exceed 42 inches in height and have 12 -inch spacing between the top two wires will allow deer and elk to pass over a fence without conflict. The BLM utilizes these fence specifications for livestock fencing on federal lands (BLM 1989). The publication presented by CDOW, "Fencing With Wildlife In Mind" provides fence designs that are friendly to wildlife and is available at the CDOW web site at http://wildlife.state.co.us/NR/rdonlyres/BOD65D61-6CB0-4746-94F1- 6EE 194E1 C230/0/fencing.pdf. Traffic: Construction and service vehicle drivers should be encouraged to maintain modest speeds to reduce the chances of striking wildlife on public and private roads. Advisory signs with this cautionary message could be placed on roadways of the area. Posting speed limit signs where collisions with wildlife appear most likely, on County Roads and energy -industry roads, will help reduce losses to wildlife as a result of vehicle encounters. Mitigation Summary Table 8 briefly summarizes the mitigation measures mentioned in this report, which can help to reduce impacts to wildlife as a result of the East Dry Hollow Phase I Pipeline. Table 8. List of Mitigat'on Measures for Wildlife Mitigatin ' Measure Benefiting Wildlife Maintain and restore native sagebrush vegetation Deer, elk, migratory birds, small mammals, reptiles, amphibians Off-site habitat improvement or acquisition Deer, elk, migratory birds, small mammals, reptiles, amphibians Seasonal scheduling of construction and development (see Table 1) Deer and elk, migratory birds, raptors Make livestock and property fencing wildlife friendly Deer and elk, large mammals, small mammals Control soil erosion on disturbed soils; bore beneath Mamm Creek to install pipeline Aquatic species of Mamm Creek and the Colorado River Store food & garbage securely, remove often Black bears Educate workers and guests, supervise children and small pets while outdoors Mountain lion Reduce vehicular speeds on access roads Deer and elk, large mammals, small mammals WestWater Engineering Page 20 of 22 pages January 2008 REFERENCES Andrews, R., and R. Righter. 1992. Colorado Birds: A Reference to Their Distribution and Habitat. Denver Museum of Natural History, Denver. BLM. 1989. Bureau of Land Management Manual, Handbook H-1741-1, "Fencing". http://blm.gov. Board of County Commissioners. 2006. Garfield County Zoning Resolution of 1978, amended October, 2006. Board of County Commissioners, Building and Planning Department, Glenwood Springs, Colorado. CDOW. 2008a. Colorado Division of Wildlife. Natural Diversity Information Source. http://ndis.nrel.colostate.edu/wildlife.asp. CDOW. 2008b. Colorado Division of Wildlife. Wildlife Species of Concern. Threatened and Endangered List. CDOW Web Home Page: http://wi Idlife.state.co.us/W ildlifeSpecies/SpeciesOfConcern/ThreatenedEndangeredList. Craig, Gerald R. 2002. Recommended Buffer Zones and Seasonal Restrictions for Colorado Raptors. Colorado Division of Wildlife, Denver. CWMA. 2007. S. Anthony, T. D'Amato, A. Doran, S. Elzinga, J. Powell, I. Schonle, and K. Uhing. Noxious Weeds of Colorado, Ninth Edition. Colorado Weed Management Association, Centennial. Elmblad, William. 2008. Personal communication. Fisheries information for Mamm Creek. Aquatic biologist (Retired), Colorado Division of Wildlife, Grand Junction. Hammerson, G. A. 1999. Amphibians and Reptiles in Colorado, Second Edition. Colorado Division of Wildlife, Denver. Kershaw, Linda, A. MacKinnon, and J. Pojar. 1998. Plants of the Rocky Mountains. Lone Pine Publishing, Auburn, Washington. Kingery, H. E. 1998. Colorado Breeding Bird Atlas. Colorado Bird Atlas Partnership, Colorado Division of Wildlife, Denver. NRCS. 2008. U. S. Department of Agriculture, Natural Resources Conservation Service. Web Soil Survey: http://websoilsurvey.nrcs.usda.gov/. Reid, F. A. 2006. A Field Guide to Mammals of North America, Fourth Edition. Peterson Field Guides. National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute, New York. Righter, R., R. Levad, C. Dexter, and K. Potter. 2004. Birds of Western Colorado Plateau and Mesa Country. Grand Valley Audubon Society, Grand Junction, Colorado. WestWater Engineering Page 21 of 22 pages January 2008 Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, and C. Spurrier. 1997. Colorado Rare Plant Field Guide. Prepared for the U.S. Bureau of Land Management, the U.S. Forest Service and the U.S. Fish and Wildlife Service by the Colorado Natural Heritage Program. Spence, Will. 2008. Personal communication. Fisheries information for Mamm Creek. District Wildlife Manager, Colorado Division of Wildlife, Rifle. USFWS. 2002. Birds of Conservation Concern 2002. U.S. Fish and Wildlife Service, Division of Migratory Bird Management, Arlington, Virginia. Whitson, T. D. (editor), L. C. Burrill, S. A. Dewey, D. W. Cudney, B. E. Nelson, R. D. Lee, and Robert Parker. 2004. Weeds of the West, Ninth Edition. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie. WestWater Engineering Page 22 of 22 pages January 2008 EMERGENCY RESPONSE PLAN U.S. ROCKIES REGION AUGUST 2006 ENCANA.. USA REGION DATE LAST REVISED: 2005 -Sept -14 REGION EMERGENCY MANAGER (REM) creator: Date Approved: EHS, Denver 2002 -May -15 REGION EMERGENCY MANAGER (REM) The REM is typically the Business Unit lead as outlined on the Emergency Response Notification Chart. The REM is responsible to: Consult with the Field Emergency Manager to assess the potential risk to the corporation and the risk mitigation options. Make or support any decisions required to mitigate risk. Communicate the emergency response effort, risk and risk mitigation to the President. Participate as the corporate representative and liaison to the President. Make the decision to notify the Division Crisis Manager and follow-up accordingly. The Region Emergency Manager(s) will be required to provide corporate level expertise and strategic direction for level 3 emergency operations. Business functions that service the Region Emergency Manager are typically, Business Unit Leaders from Operations, Human Resources, Legal, Media Relations and Environment, Health and Safety. The Region Emergency Manager is responsible to: Ensure that resources have been allocated to meet the on-site priorities. — Resource any necessary expertise to assist in developing methods and/or procedures to contain the emergency and lessen its impact. Assess the magnitude and impact of the emergency across the value areas of the corporation, i.e. people, environment, financial and public image. Obtain the relevant information to develop a media management plan and communications to the President and Corporation. Participate in a review of the response effort for improvement opportunities once the emergency has been called down. REMT. DOC ENCANA. EnCana 0il & Gas (USA) Inc Page 1 of 1 USA REGION DATE LAST REVISED: 2005 -Sept -14 FIELD EMERGENCY MANAGER (FEM) creator: CHs, Denver Date Approved: 2002 -May -15 The Field Emergency Manager (FEM) is typically the Sub Business Unit Lead, their designate, or the person first contacted by the Emergency Coordination Officer. The responsibilities of the Field Emergency Manager (FEM) are: Affirm, Assess, Anticipate and Support - Keep communications calm and re -affirm confidence in the response team and effort. Consult with the Emergency Coordination Officer and re-evaluate the potential for the emergency level to escalate. Confirm the current emergency level, 1,2,3. - Anticipate and back fill for the Emergency Coordination Officer. - Assist the Emergency Coordination Officer in deciding on immediate, near-term actions to be taken. -- Continuously assess the potential risk to the corporation and the risk mitigation options. Contact the Region Emergency Manager (REM) (typically the business unit lead) and advise on the current emergency level. Relay as much of the "who, what, where, when" information as possible, the actions that have been undertaken or that are underway and any immediate decisions required. Use the Time and Event Log. Advise the Region Emergency Manager (REM) on the need for assistance from business support functions such as Human Resources, Legal Counsel, Media Relations or Region -level EHS. Advise on the need to assemble the Region Emergency Management Team based on the nature and escalation potential of the emergency. - Keep the lines of communication open to the Emergency Coordination Officer and the Region EHS Support. - Contact Community Relations as soon as possible for any incident that has the potential to draw media attention (local news, radio, television) or may impact local residents/landowners. Coordinate Resource additional personnel, technical services, company specialists, etc., as required by the Emergency Coordination Officer, - Coordinate the relationship between the Region Emergency Manager! Region Emergency Management Team and the field emergency response effort with specific emphasis on resource availability and media management.. - Assemble as required and coordinate any corporate business groups such as Human Resources, Legal Council, or Media Relations to support the needs and efforts for level 2 emergency response. rcM DOC ENCANA. EnCana Oil & Gas (USA) Inc. Page 1 of 2 USA REGION DATE LAST REVISED: 2005 -Sept -14 FIELD EMERGENCY MANAGER (FEM) Creator: ENS, Denver Date Approved: 2002 -May -15 Assemble as required and coordinate the operation of the Region Emergency Management Team (REMT) for level 3 emergency response. Designate support personnel to the REMT such as scribe(s), telephone communication coordinator(s), etc. The entire group may not be assembled for every situation, but designated members will always be on call. Coordinate a review of the response effort for improvement opportunities once the emergency has been called down. Call Down - Consult with the Emergency Coordination Officer for appropriate 'ball down" of the emergency. FEM DOC ENCANA. EnCana Oil 8 Gas (USA) Inc. Page 2 of 2 USA REGION DATE LAST REVISED: 2005 -Sept -14 EMERGENCY COORDINATION OFFICER (ECO) Creator: EHS, Denver D ate Approved: 2002 -May -15 The Emergency Coordination Officer (ECO) is typically the area supervisor or the person first contacted by the on-site commander or deputy on site commander. The responsibilities of the Emergency Coordination Officer (ECO) are: Assessment and Evaluation — Re-evaluate the potential for the emergency level to escalate in consultation with the On -Site Commander (OSC). Assess and affirm the required on scene support roles in consultation with the On- Site Commander (OSC). Contact Community Relations as soon as possible for any incident that has the potential to draw media attention (local news, radio, television) or may impact local residents/landowners. Control and Coordinate — Keep the situation calm and instill confidence in the response team and effort. Replace the On -Site Commander (OSC) if a contractor with company personnel, if appropriate. Assist the On -Site Commander in deciding on immediate action to be taken. — Determine if it is best to go directly to the accident site or remain at a more central location. — Establish an On -Site Command Post for level 2 and 3 emergencies. Anticipate and back fill for the On -Site Commander. Coordinate replacement of the Tactical Support Team members depending on the duration of the emergency. — Coordinate notification to families and next-of-kin as required by the nature of the injuries. Communicate Contact the Field Emergency Manager (FEM) (typically the sub business unit lead). Relay as much of the "'who, what, where, when" information as possible, the actions that have been undertaken or that are underway and any immediate decisions required. Use the Time and Event Log. Provide input to the Field Emergency Manager (FEM) regarding the need for additional personnel, technical services, company specialists, etc. Contact the Business Unit Environmental, Health and Safety representative and determine if they can assist with the response at the site or to remain on stand-by to assist with the investigation. ECO DOC ENCANA,. En0ana Oil & Gas (USA) Inc. Page 1 of 2 USA REGION DATE LAST REVISED: 2005 -Sept -14 EMERGENCY COORDINATION OFFICER (ECO) Creator: EHS. Denver Date Approved: 2002 -May -15 Assist the appropriate government agencies in establishing an Off -Site Emergency Operations Center including a Public and Media Inquiry Room for level 3 emergencies. — Keep the lines of communication open to both the On -Site Commander and the Field Emergency Manager. Call Down — Consult with the On -Site Commander (OSC) on "call down" of the emergency. Collect! Protect Supervise the collection of all relevant information including log sheets, accident reports, Safe Work Permits, OSHA documents and other appropriate company and government agency documents. Secure any evidence that may be relevant to the investigation. ECO.00C ENCANA. Encana Oil 8 Gas (USA) Inc. Page 2 of 2 USA REGION DATE LAST REVISED: 2005 -Sept -14 ON-SITE COMMANDER (OSC) Creator: EDS, Denver Date Approved: 2002 -May -15 The most senior Company employee or Company represen ative on the scene is the On -Site Commander (OSC). That person has the following responsibilities: Assess the Site/ the Situation - Assess the site and the situation for hazards, evaluate the actual and potential risks and establish a safe location for the on scene command post. Review and complete the Incident Assessment Checklist at the end of this section. - Assess the type of on-site support roles required to manage the emergency. Typical support roles are: Deputy On -Site Commander - assists the on-site commander. Site Safety - advice on safety procedures and incident command system response. Logistics Planning Chief - technical support, order resources, personnel and equipment. Media Officer - field media issues and general public inquiries. Contact as soon as possible for any incident that has the potential to draw media attention (local news, radio, television) or may impact local residents/landowners. Public Protection Officer - coordinate site security and public safety actions. Public Evacuation Leader - locate, advise and assist public evacuation. - Roadblock Crews - establish roadblocks to secure emergency planning zone. - Switchboard Lead - receives and directs incoming calls. - Telephone Notification Lead - notification of nearby residents in the emergency planning zone. Documentation Lead - assists the on-site commander with documentation requirements. Rovers - stand-by personnel prepared to assist any support role. Get Help Get help for any injuries first. Then get help for other non -life threatening events as soon as possible. If required, enlist the aid of other Company employees or contract employees in your area. - Designate team leads and assign them to the required support roles with primary emphasis to ensure that all on-site personnel are accounted for, barriers and roadblocks are in place and staffed, personal protective equipment is available and personnel and public safety is assured. - Direct the Tactical Support Team to report back as soon as possible on the status of their assigned responsibilities. oSc.00c ENCANA- EnCana 011 & Gas (USA) Inc. Page 1 of 3 USA REGION DATE LAST REVISED: 2005 -Sept -14 ON-SITE COMMANDER (OSC) Creator: EHS, Denver Dote Approved: 2002 -May -15 Give Help — If there are injured persons on-site, administer immediate first aid and arrange for transport to a medical facility as soon as practical (if remote, meet the ambulance, or airlift, or drive victim to hospital, clinic, doctor, etc.). Contact the Emergency Coordination Officer (ECO) Collect/ document as much of the "who, what, where, when" information as possible, the actions that have been undertaken or that are underway, and any immediate decisions required. Use the Incident Assessment checklist. Contact and inform the Emergency Coordination Officer (likely his/her area supervisor) of all events that have occurred or may occur and declare the initial emergency level 1,2,3. Define and prioritize critical issues and evaluate the need for additional resources. — Establish a reliable means for close communications with the incident commander. Minimize Damage On -Site Where the potential for more injury or damage exists, assess the nature of the threat and if life safety is assured, take immediate action to minimize those dangers. This may include shutting off energy sources, closing valves to limit fuel spills, extinguishing small fires, and calling the police, fire department, etc., as necessary. Secure the Site — A safe perimeter should be established around the accident site that secures the area from onlookers, media, and unauthorized and unnecessary personnel. Utilize the police and/or sheriffs department to accomplish this task. Local law enforcement officials have an obligation to protect the public and they will help to secure the scene if requested. -- As soon as practical, the On -Site Commander (OSC) should take steps necessary to secure the site. The primary reasons for securing the site during an emergency situation are as to minimize further danger of injury, loss, or damage, to control outside involvement and to preserve the facts for a truthful investigation. Coordinate Site Access and Call Down Emergency — On-site access should be limited to appropriate Company personnel, contractors, and emergency personnel. Do not let employees, contractors or any other individual who simply wants to "look at what happened" wander about the site. OSC. DOC E+ NCANA, EnCana Oil & Gas (USA) Inc. Page 2 01:3 USA REGION DATE LAST REVISED: 2005-Sepf-14 ON-SITE COMMANDER (OSC) Creator: EHS, Denver Date Approved: 2002 -May -16 — If an unauthorized person (trespasser) refuses to honor the access limitations and enters the secured area, inform that person that they are trespassing and demand that they leave immediately. If they refuse to leave the premises, telephone the local law enforcement authority and ask them to remove the trespasser and notify both the trespasser and the authorities that we will press charges. — Continually re -assess the situation and risk to life safety. — Maintain control of all on-site operations. — Maintain regular communications with the Emergency Coordination Officer (ECO). — Give an "all clear" signal to on scene personnel when safe to do so. Investigation Once the "all clear' signal has been issued, the site must remain secured in preparation for the investigation as outlined in section 1. OSC DOC ENCANA.. EnCana oil & Gas (USA) Inc Page 3 ot 3 USA REGION DATE LAST REVISED: 2004 -Jan -21 TACTICAL SUPPORT TEAM creator: EHS. Denver Date Approved; 2002 -May -15 The Tactical Support Team is typically comprised of available operators and other competent personnel in close enough proximity to the emergency area to be of assistance. The primary role of the Tactical Support Team is to coordinate or carry out the assigned role safely and to ensure that the On -Site Commander or Deputy On -Site Commander is regularly updated on the status and any problems or apparent risks. The type of support roles and associated responsibilities are: Deputy On -Site Commander— assists the on site commander. Site Safety — advise on safety procedures and incident command system response. Logistics Planning Chief - Technical support, order resources, personnel and equipment. Media Officer — field media issues and general public inquiries. Public Protection Officer — coordinate site security and public safety actions. Public Evacuation Leader — locate, advise and assist public evacuation. Roadblock Crews — establish road blocks to secure emergency planning zone. Switchboard Lead — receives and directs incoming calls. Telephone Notification Lead — notification of nearby residents in the emergency planning zone. Documentation Lead — assists the on scene commander with documentation requirements. Rovers — stand-by personnel prepared to assist any support role. TACTICAL. DOC ENCANA.. EnCana 01 & Gas (USA) Inc. Page 1 of 1 USA REGION DATE LAST REVISED: 2004 -Jan -21 ENVIRONMENT, HEALTH AND SAFETY SUPPORT Creator: EHS, Denver Date Approved: 2002 -May -15 Environment, Health and Safety (EHS) support for all emergency levels is provided at the request of the On -Site Commander or the Emergency Coordination Officer. Primary EHS contacts for each Business Unit and Sub Business Unit are identified on the respective field notification charts. The responsibilities of environment, health and safety personnel are: Contact, Communicate, Assist, Contain - Establish a reliable means of communications with the site. - Provide immediate technical input to the Site Safety Team Lead, On -Site Commander and Emergency Coordination Officer regarding the anticipated hazards, risks, safety of response efforts and site security. - Assist in determining the emergency level and escalation potential. Contact the Region EHS representative. Plan to travel to the site or arrange for local support that can arrive sooner. - Be available to provide support while travelling to the site. Assist the On -Site Commander and Emergency Coordination Officer with the administration of the incident command response system. Assist in the containment and mitigation of the event. -- Assist in identifying the agencies that need to be notified. - Assist the Emergency Coordination Officer in making the necessary regulatory notifications. - Provide regular updates to the Region EHS. Loss Potential Assessment, Evaluation, Investigation - Assess the Toss potential and environmental damage. Assess whether any regulatory violations occurred. - Provide technical assistance to limit additional or potential violations. - Coordinate or participate in the investigation as outlined in Section 1. - Evaluate reports and ensure that preventive methods and procedures are developed. EFTS DOC E1rCA A.. EnCana Dil & Gas (USA) Inc. Page 1 of 1 S PICC EAE - RQENCV NOTIFICATION CHART (Red) J N J J ON-SITE COMMANDER (Yellow) (mnl;I SPninr ampinyPA nr rnmpany roornsentahvp nn the AilP) MIFHEtwM DR 1 ATI F C iglirtght Blue) PRODUCTION David Grlsso W (970) 285-2601 C (070) 260-9660 R (970) 241-6839 Eric Lane W (970) 285.2651 C (970) 640-9172 Gerald Papez C (910) 260.59Ii6 R (970) 268-5050 Shane Summers W (970) 285-2682 C (970) 379-0418 DRILLING & COMPLETIONS Richard EberSpecher (DrIg) W (070) 286-2662 C (970) 618.5121 John Grubich (Drig) W (970) 285-2631 C (970) 379-8735 R (970) 241-1656 Mark Balderston (Comp) W (970) 285.2692 C (970) 629.5846 R (970) 824-6115 Gary Etter (Comp) C (970) 379-6434 R (970) 252-8872 Kirby Burchett (Comp) C (970) 250.1170 R (970) 434-0910 Dan Hacking (Comp) C (970) 778-1083 PLANT/PIPELINE Gas Control 0 (970)625-1020 W (070) 285-2815 C (970) 301-1319 T (800) 791-7691 Dewey Neely W (970) 285-2632 C (970) 250.9462 Brad Ankrum W (970) 285-2630 C (435) 280-1873 Rocky Erb W (970) 285-21539 C (970)210-8571 R (970) 285-7114 Floyd Alvey W (970) 285-2879 C (970) 319-0357 Steve Robison W (970) 285-2694 C (970) 778-1252 FIELD EMERGENCY MANAGER (Purple) Joel Fox W (720) 876-3697 C (303) 885-0101 Tim Baer W (720) 876-5059 C (720) 560.3131 Jesse Wood W (720) 876.5064 C (303) 885.5559 TACTICAL SUPPORT TEAM (Thk..tl party suppoll, such as man 10 eouioment. services. suoolies. etc.} COMMUNITY RELATIONS Doug Hock W (720) 876-5096 C (303) 328-7048 R (303) 777-3412 REGION EMERGENCY MANAGER(S1 (urorin) Darrin Henke Southern Rockies W (720) 878.5157 C (303) 819.7316 Dean Purcell' Gathering Services W (720) 876.3680 C (303) 748-9810 USA REGION PRESIDENT Jeff Wojahn W (720) 878.5200 C (303) 807-5921 S_ PICEANCE ERP -TAB 13 BUSINESS SUPPORT RoBarclay Human Resources W(720) 876-5164 C (303) 547-8510 Mary Viviano Legal W (7 20) 876-5020 C (120) 272-6800 Bob Thomlinson Business Services W (720) 876.5232 C (303) 882-6622 Tom Foster - Controller W (720) 876-6537 OSNA DIVISION PRESIDENT Randy Ereaman W (403) 645-4902 C (403) 510.6831 MeetMe Conference Line Phone: (877) 645-4333 Access Code: 8765248 Chairperson PIN: 8953 EMERGENCY CONTACTS Ambulance -- Hard Line Fire/Police - Hard Line Amb(Fire/Palica- Sat7C®II Garfield County Parachute Hospital Poison COntrOI State Patrol Sheriff Care Flight (St. Mary's) Area RoadlWeather 911 911 (970) 625.1899 (970) 285-7711 (970) 625.1510 (600) 955-9119 (970) 945.6198 (970) 945-0453 (800) 332-4923 (877) 315.7623 EHS COORDINATOR/ADVISOR (Green) Kenny Allred Parachute W (970) 285-2635 C (435) 260.1669 R (970) 245-0691 5 (877) 306-2732 Chris Williams W (720) 876-5485 C (303) 088.6970 R (303) 663-6564 Danny Knutson W (970) 285-2709 C (970) 300 7610 S (877) 621-6946 Terry Gosney Parachute W (970) 285-2887 C (970) 309-8155 R (970) 808-0410 6 (877) 494-4227 Brant Glmmeson W (720) 876-5030 C (303) 019.7323 R (303) 680-1568 Safety On -Call (970) 210-8755 Environmental On -Call (970)319-9173 AGENCY CONTACTS i3urRau nt 1 and Mgmt WY Public Service Commission COGCC CDPHE National Response Cir Federal OSHA LEPC CO One -Call CO PUC (8-5 M -F) (After Hrs Pager) UT One -Call (970) 244-3050 (307) 777-5722 (970) 878.3600 (877) 518-5608 (800) 424-6802 (800) 321-6742 (970) 945-0453 (000) 922-1907 (303) 894-2854 (303) 826-1313 (800) 862-4111 TEAM LEAD, EHS USA Region Jim Thatcher W (720) 876-3822 C (720) 289-4850 R !3031053-0168 SECURITY ADVISOR USA Region John Lipka W (720) 876-3748 C (303) 807.8974 R (3031667-0028 • CRISIS MANAGER - OSNA On Call 24 Hours (403) 645-7777 GPS Coordinates Degree W. Degree N: LOSS CONTROL! INSURANCE Peter Duthie W (403) 645-3459 C (403) X171-1323 Revised: 10(2972007 Outside Agencies Emergency Contact List Service Name Address Phone Emergency 911 Air Evacuation St. Mary's Care Flight Grand Junction, CO (800) 332-4923 Ambulance & Fire Parachute Fire Dept. Parachute, CO (970) 285-7711 Hospital (Glenwood Springs) Valley View Hospital 1906 Blake Avenue Glenwood Springs, CO (970) 945-6535 Hospital (Grand Junction) St. Mary's Hospital & Medical Center 2635 N. 7'" Street Grand Junction, CO (970) 244-22.73 Hospital (Rifle) Grand River Hospital District 501 Airport Road Rifle, CO (970) 625-1510 Medical Clinic Battlement Mesa Clinic 73 Sipprelle, Suite K Parachute, CO (970) 285-7046 Poison Control 202 Railroad Ave. Rifle, CO 81650 (800) 332-3073 (970) 625-8095 Police Rifle Police Dept.. Sheriff Garfield County Sheriff 107 8"' Street Glenwood Springs,CO (970) 945-0453 State Patrol State of Colorado 202 Centennial Drive Glenwood Springs,CO (970) 945-6198 State Patrol (Dispatch) (970) 625-8095 EnCana Oil & Gas (USA) Inc. OIL SPILL CONTINGENCY PLAN Prepared for: EnCana Oil & Gas (USA) Inc. Parachute Area Gathering Facilities June 2004 Prepared by: Buys & Associates, Inc. 300 E. Mineral Ave., Suite 10 Littleton, Colorado 80122 (303) 781-8211 www.Buvsandassociates.com Revised by: Jake Jacobs EnCana Oil & Gas (USA) Inc. July 2005 INTRODUCTION It is the policy of EnCana Oil & Gas (USA) Inc. (EnCana) to comply with all environmental and safety rules and regulations. To implement this policy, it is necessary to provide for employee training, equipment, policies and procedures for preventative measures and immediate response for emergency incidents. An emergency incident includes spills, fires, blowouts, explosions or any act causing injuries or fatalities. Major incidents, or the cumulative effect of minor incidents, can cause complex and expensive technical, legal, govemmental, and public relation problems for the company. It is not the intent of this manual to provide a step-by-step solution to every possible emergency incident. This manual will serve as a guide to assist EnCana personnel in the proper response to an emergency incident. REPORTING OF ALL EMERGENCIES OR INCIDENTS (Spills, Fires, Blowouts, Accidents, etc.) EnCana shall be notified according to "Emergency Response Plan" protocol, of any and all fires, breaks, spills, leaks, or blowouts containing hydrocarbons or hydrocarbon waste or residue, salt water, strong caustic or strong acids, or other deleterious chemicals or harmful contaminants occurring at EnCana drilling, producing, transporting, or processing facilities. In addition, all injuries, fatalities and vehicle accidents shall be reported to EnCana Operations Management and Environmental Health & Safety personnel, according to "Emergency Response Plan" protocol. Notification of such fire, break, leak, spill, blowout or any accident shall be in accordance with the provisions set forth below: Immediate Notification: Immediate notification shall be made as soon as possible after discovery (day or night) in accordance with "Emergency Response Plan" protocol. Situations requiring immediate notification are as follows: 1) Blowouts 2) All fires 3) Any spill, break, or leak of one barrel or more 4) Any spill, break or leak which reaches a stream, lake or watercourse, including any lake bed, gully, draw, streambed, wash, arroyo, natural or man-made channel through which water flows, has flowed, or could flow. 5) Spills, breaks, or leaks which may with reasonable probability endanger human health, result in substantial damage to property, or endanger the health of livestock or wildlife. 6) All serious injuries, fatalities or vehicle accidents 7) Hydrogen sulfide emissions/discharges In no event shall any personnel minimize the size of any spill, fire or blowout, nor shall they make the decision to delay reporting or begin cleanup operations. 2 TECHNIQUES FOR CONTROLLING OIL DISCHARGES (LAND & WATER) I. Purpose A. In spite of precautions taken, oil discharges can occur. Since the location and magnitude of discharges can vary so greatly, this section was written to furnish general guidelines and usable techniques for containment of cleanup operations. II. Countermeasures A. Upon discovery of an accidental discharge the first action taken should be the safeguard of life and property. The next step would be to find the source of discharge and stop additional loss of fluid. I. Controllable Discharge: In most cases the amount of fluid d being discharged is small and operations can be shut down to relieve power oil line or flowline pressure while installing a saddle clamp. The same is true when a valve is left open or tanks overflow. If possible the oil should be transferred into another storage tank or holding tank. 2. Catastrophic Discharge: The most damaging type of discharge usually occurs when a large volume of oil is lost in a short period of time. This is usually caused by ruptured tanks, equipment failure, or flowline breaks. In such cases the containment equipment and manpower should be concentrated well below the leading edge of the discharged oil. This will insure ample time for installation of containment dikes, dams and equipment. 3. Flammability: If discharged material is flammable and is located in a congested area, the local Fire and Police Departments should be notified immediately. They in turn can initiate proper evacuation measures. III. Containment & Removal A. Fast action to contain the discharged fluid is of the utmost importance. It not only reduces the size of the area affected, it also reduces the cost of cleanup operations. The successful handling of any oil discharge depends on four different operations: 1) Containment 2) Removal 3) Disposal 4) Cleanup 3 IV. Mobilization A. The availability of equipment, material and labor is very important. Depending on the terrain and size of the discharge the following equipment may be needed; dozers, backhoe, tanks or vacuum truck, pumps, hose, booms, fencing, sorbent materials, portable light plant, small boat, rubber boots, hand tools, communication system, etc. V. Discharges On Land A. Oil spills can come from many sources, however, the most common cause is power oil line or flowline leaks. The first rule for a land spill is, as always, containment. Confine the oil to the smallest area possible to reduce land damage and cleanup operations. In most areas, an earthen dam or dike can be constructed in the drainage flow to catch the oil. This will hold the oil for pick up by vacuum trucks. If groundwater (rain) is a problem, a retention pit can be dug with diversion ditches cut so that all spilled fluids drain into the pit. Vacuum trucks can then pick up the collected fluid. It may be necessary to install a siphon in the pit or dam if rainwater is a problem. A second dam or dike should always be maintained further down the drainage flow from where the oil is contained. If it becomes necessary to use this secondary dam, then immediately construct another further down the drainage flow. VI. Containment of Discharges Into Water A. The first priority is to limit the spread of oil to the smallest possible area. B. Floating Boom Development: Depending on water currents, a boom can be an effective means of controlling the spread of oil on water. Different conditions require the boom to be placed in certain configurations to utilize their containment potential. Generally, where river or water currents exceed 3 feet per second, containment is hindered. The oil will be forced under the barrier if the boom is placed perpendicular to the direction of water flow. Floating booms should be placed in such a way as to divert the oil to a calm area where removal may be accomplished. The types of boom development techniques commonly used are outlined in the following descriptions and diagrams: 1. Oil can be controlled along the shoreline adjacent to the point of discharge by tying one end of the boom to the shore and towing the loose end around the edge of the slick by boat or hand. Sorbent materials can then be placed in the slick, and removed by hand tools along the shoreline. Large spills can be removed by vacuum pump or by towing the boom and encircled oil to a location where a skimming operation can be accomplished. This type of development is shown in the upper portion of Figure D-1. 2. The lower portion of Figure D-1 depicts an open lake with the slick located offshore. The boom is anchored at one end and towed around the slick to completely encircle the oil. The oil can then be removed with sorbent materials. 3. In a fast flowing stream (over 3 feet/second), the boom must be deployed to divert the oil into a calmer area for the removal operation. If the stream is 4 narrow, the boom may be tied to one bank and stretched across the stream in a configuration similar to that shown in the upper portion of Figure D-2. Best results will be accomplished when the boom is deployed at an angle Less than 20° to the direction of flow. 4. The lower portion of Figure D-2 depicts a wide fast flowing river where the boom will not reach across the river. The current would wash the oil under the barrier if the boom was placed perpendicular to the water flow. A boom configuration must be employed which diverts the oil into a calm area for oil removal. The boom is tied to the shoreline at one end and attached to a mooring line at the other end to maintain the proper configuration to herd the oil. The boom should be placed at an angle less than 20° to the direction of flow. 5. In order to avoid loss of oil under a boom due to delays in removing the oil or to recover lesser amounts over a longer period of time (overnight), the construction of a skimming pond can be used. This technique is shown in Figure D-3. The use of several booms in conjunction with a skimming pond at the stream edge is also shown in Figure D-3. C. Expedient Booms: Described below are simple booms that can be constructed with materials available from local sources. 1. Tie several bales of straw or hay (end to end) with steel wire. This acts as a sorbent boom. If you want to use it as a containment -type boom, just cover the bales with polyethylene sheets. The boom is attached to a cable and deployed across the stream. Figure D-4 describes this boom. 2. Logs or similar material can also be fastened together (end to end) and deployed across the water channel. Oil, however, passes more easily under this type barrier. This can be remedied by scattering floating sorbent materials in front of the barrier to help contain the oil. The barrier should also be placed at a sharper angle (10°) to the direction of flow. 3. Filter Fences: Filter fences can be used to control oil in ditches and streams where, generally, the water depth is four feet or less. This type containment is very useful since it uses materials available in more areas at a minimal cost. This fence can be constructed with chicken or hog wire or chain link fence. Steel or wooden posts can be used for support and hay or straw used for the filter. Posts are driven into the stream bed 8-10 feet apart and set at an angle to current flow. The wire fencing is then tied to the post, always allowing at least one foot freeboard (wire above water level). Then anchor the fence to each bank of the stream. The straw or hay is broken out of the bales and spread over the water, the full width of the fence, for 15 to 20 feet back upstream. The depth of the straw or hay should be a minimum of 6 inches thick. In most cases there should be a series of these filter fences constructed leaving adequate working space between fences. These fences should always be continually maintained so the saturated straw or hay can be replaced as needed (Figure D-4). 5 D. Flow Construction: It may be possible, where water flow volume is low, terrain permits, and sufficient time is available, to construct a catch basin in the stream channel or divert the water into holding ponds. This allows removal of oil by skimmer, vacuum trucks, etc. I . Siphon Dam: Figure D-5 illustrates two types of temporary catch basin construction using submerged pipe openings to carry water past the surface barrier which, in turn, retains the floating oil. Care should be taken in selection of pipe diameter or number of pipes used to insure adequate discharge to prevent the dike from overflowing by trapped water. 6 Boom Along Shoreline Oil Boom Open Lake Figure 0-1. Boom Deployment in Lakes. 7 Figure D-2. Boom Deployment in Fast-Flowing Stream. 8 4D \\�m 4 N. FloN. �w,9. Shallow Stilling Basin Narrow Stream 1/4 Earth dike Siphon Pipe \\N. N. Flow N. N. Wide Stream Shallow Stilling E rth Basin Siphon Dika 1/4 . Figure 0-3. Boom Deployment in Fast -Flowing Stream - Alternate Method. 9 Straw or Tied Togethe Hay Bales Straw Bele Boom Wire Mesh Fence Broadcast Sorbent Material Filter Fence Figure 0-4. Expedient Boom and Fitter Fence. 10 Earthen Dam 4. Retained 0l Inverted Siphon Earthen Dam v T Siphon Figure 0-5. Earthen Dam Construction. 11 VII. Removal of Oil From Water A. Ideally, oil removal will be a two-stage operation. The first step is to consolidate the oil slick as much as possible. The greater oil thickness allows more efficient use of skimming equipment. Oil recovered by this process can often be placed back into the production system and thus recovered. The second stage is to remove the remaining skim of oil. This is done by covering the slick with floating sorbent materials and retrieving the saturated materials by hand labor. B. Practically, oil is diverted to the most suitable or accessible point where removal equipment can be located. Wind and water currents can be used to help float the oil into pockets for removal. However, wind and water currents can also hinder the operation. Always be aware of these two factors. VIII. Treating Agents A. Oil spill treating agents are generally classified as dispersants, collecting agents, sinking agents, burning agents, or gelling agents. B. Chemical agents are not allowed to be used without prior approval of the EPA C. EnCana does not keep these chemical agents on hand and does not intend for them to be used on any oil spill unless approval is received from the appropriate regulatory agency, and even then only with prior management approval. IX. Final Cleanup A. The final cleanup phase is to remove the oil stains on banks and vegetation bordering the spill area. The remaining contamination can be picked up by heavy equipment and removed to a disposal site. B. In order to protect the shoreline it may be necessary to strip the oil from vegetation by hand or flush with water into a holding pond. X. Disposal of Oil and Sorbent Materials A. The EnCana President or Operations Manager will determine what samples need to be taken and will evaluate what disposal options are best for the particular site. 12 Notification Call List EnCana Oil & Gas (USA) Inc. Brad Ankrum/Field Operations Coordinator Work: 970-285-2630 Cell: 435-260-1673 Home: Rocky Erb/Plant Coordinator Work: 970-285-2639 Cell: 970-210-8571 Home: 970-285-7114 Steve Robison/Pipelines Work: 970-285-2694 Cell: 970- 989-0029 Home: Jess Wood/Team Leader Work: 303-389-5064 Cell: 303-885-5559 Home: 303-621-2433 Brant Gimmeson/EHS Advisor Work: 720-876-5030 Cell: 303-819-7323 Home: 303-680-1568 Emergency Response Contractors Sterling Construction: 970-522-1063, 307-389-2370 Backhoe/Dirt Work/Emergency Response TD Productions: 970-625-2275,970-230-0704 Vacuum Truck HB Lee (Baggs, WY): 307-383-6365 Backhoe/Dirt Work/Emergency Response Chris Well Trucking (Baggs, WY): 307-383-6915 Vacuum Truck 13 SPCC NOTIFICATION LIST FEDERAL, STATE AND LOCAL AGENCY CALL LIST If any oil contacts surface water, whether flowing or not, or an intermittent drainage, and results in a "visible sheen" on the water, the following phone contacts must be made as soon as possible following the discovery of the spill. The contacts must be made irregardless of the quantity discharged. 1) National Response Center (The NRC should automatically contact the EPA) 2) The Regional office of the EPA 3) State Water Quality Control Division 4) State Oil and Gas Regulatory Agency 5) Any other state agencies with responsibility for oil pollution control 6) Affected land owners FOLLOW COMPANY REPORTING PROCEDURES SHOULD IT BECOME NECESSARY TO CONTACT ANY OF THE ABOVE AGENCIES. USE THE RELEASE NOTIFICATION FORM ON THE FOLLOWING PAGE TO ORGANIZE AND COMMUNICATE INFORMATION CONCERNING THE SPILL. FEDERAL AGENCIES National Response Center: (800) 424-8802 EPA Region VIII Spill Line: (303) 293-1788 EPA Region VIII: (303) 312-6312 (Working Hours) BLM Grand Junction Field Office: 970-244-3050 BLM Little Snake Field Office: 970-826-5000 STATE AGENCIES 1-800-227-8914 (24 -Hour) Colorado Oil & Gas Conservation Commission: 303-894-2100 State of Colorado Water Quality Office: 303-692-3500 LOCAL EMERGENCY RESPONSE AGENCIES Emergency Central Dispatch (Where Available - Local Calls Only) : 911 Emergency Response: 911 Sheriff/Police: 970-945-0453 Hospital: 970-625-1510 Sheriff/Hospital/Police: 307-324-2776 (Baggs, WY) 14 Release Notification Form Should it become necessary to inform any federal or state agency concerning an accidental release, be prepared to provide the following information. Reporter's Full Name: Title: Primary Phone Number: Secondary Phone Number Company: Office Address Spill Location: Sec. Twp. Rge. Nearest City: County: State: Directions From Nearest City to Spill Location: Date and Time of Release: Type of Material Released: Source of the Material Release: Total Quantity Released: Quantity Released Into Water Container Type: Container Material: Container Storage Capacity: Facility Storage Capacity: Actions undertaken to Correct, Control and Mitigate the Incident: Description of Damages: Number of Injuries: Number of Deaths: Evacuation(s) Conducted: Number of Evacuated: NOTIFICATION LOG Agency Contacted Contact Person Date and Time of Contact National Response Center (NRC) EPA Regional Office State Water Quality Division State Oil & Gas Commission BLM Field Office Forest Service Other: Other: 15 RIDER NO. 1 To be attached to and fond a part of: Bond No.105073441 Type of Bond: License/Permit Executed by EnCana Oil 8 Gas (USA) Inc. of America as Surety, in favor of Garfield County, Colorado Travelers Casualty and Surety Company of America One Tower Square, Hartford, CT 06183 , as Principal, and by Travelers Casualty and Surety Company and dated March 7. 2009 In consideration of the premium charged for the attached bond, it is hereby agreed to change: Description of Permit is amended to read as follows: Special Use Permit covering approximately 29.66 acres at East Dry Hollow Loop Pipeline Phase 1, Garfield Co., CO. Township 7 South, Range 92 West: Secticn 4: S1/2 SE1/4, SE1/4 SW114, N1/2 SW1/4; Secticn 5: NW1/4 SE1/4, NW1(4 SE1/4, SW1/4; Section 6: SE1/4, part of the E1/2 SW1/4, part of Lot 3; Section 9, W1/2, NE1/4. This rider is effective March 7, 2008 This rider is executed upon the express condition that the surety's liability under said bond shall not be cumulative and shall in no event exceed the amount specifically set forth in said bond or any existing certificate changing the amount of said bond. The referenced bond shall be subject to all its agreements, limitations and conditions except as herein expressly modified. SIGNED, SEALED AND DATED this 191h day of March 2008 By: EiCana Oil & Gas (USA) Inc. Principal , c 6. [Jceiti j nitatnlett —14— FG.c.f Trate lers Casualty and Surety Con 'pony of America By \ QA- `: k_ ( (.3_ ; .A. Attorney -in -Fact Teresa D. Kelly 5-123= ;01-,y) WARNING:THIS POWER OF ATTORNEY IS INVALID WITHOUT THE RED BORDER FR TRAVELERS POWER OF ATTORNEY Farmington Casualty Company Fidelity and Guaranty Insurance Company Fidelity and Guaranty Insurance Underwriters, Inc. Seaboard Surety Company St. Paul Fire and Marine Insurance Company SI. Pau! Guardia]] Insurance Company SI. Paul Mercury Insurance Company Travelers Casually and Surety Company Travelers Casualty and Surety Company of Anteriea United States Fidelity and Guaranty Company AttorneyIn Fact No. 215217 Certificate No. 001685214 KNOW ALL MEN 1)Y THESE PRESENTS: That Seaboard Surety Company is a corporation duly organized under the laws of the State of New York, that St. Paul Fire and Marine insurance Company, Si Pawl Guardian Insurance Company and St. Paul Mercury Insurance Company are corporations duly organized under the law; of the State of Minnesota, that Farmington Casualty Company, Travelers Casually and Surety Catnprny, and Travelers Casualty and Surety Company of America are corporations duly organized under the laws of the State of Connecticut, that United States Fidelity and Guaranty Company is a corporation duly organized under the laws of the State of Maryland, that Fidelity and Guaranty Insurance Company is a corporation duly oraanizcd under the Taws of the State of Iowa. and that Fidelity and Guaranty Insurance Underwriters. Inc. is a corporation duly organized under the laws of the State of Wisconsin (herein collectively celled the "Companies"), and that the Companies do hereby make, constitute and appoint Teresa D. Kelly, Dan W. Burton, Benjamin D. Wilcox, and Angola M. Tindal of the City of Houston , State of Texas their true and lawful Attorncy(s)•in-Fact, each in their separate capacity if more than one is named above, to sign, execute, seal and acknowledge any and all bonds, recognizances, conditional undertakings and other writings obligatory in the nature thereof on behalf of the Companies in their business of guaranteeing the fide:ity of persons, guaranteeing the performance of contracts and executing or guaranteeing bonds and undertakings required or permitted in any actions er proceedings allowed by law. 11th IN WITNES IRREOF. the Compani j� a,ve cause) this instrument to be signed and their corporate scats to be hereto affixed, this day of - Farmington Casually Company Fidelity and Guaranty Insurance Company Fidelity and Guaranty Insurance Underwriters, Inc. Seaboard Surety Company St. Paul Fire and Marine Insurance Company SI. Paul Guardian Insurance Company SI. Paul Mercury Insurance Company Travelers Casualty and Surety Company Travelers Casualty and Surety Company of America United States Fidelity and Guaranty Company ;.vi areb Z ammo. Coxx Stale of Connecticut City of Hartford ss. Ely; Georg g Tlwwpson, ^u.nr ice President 11th June 2007 On t:tis the day of , before mc personally appeared George W. Thompson, who acknowledged himself to be the Senior Vice President of Farmington Casualty Company. Fidelity and Guaranty Insurance Company, Fidelity and Guaranty Insurance Underwriters, Inc., Seaboard Surety Company, St. Paul Fire and Marine Insurance Company, St. Paul Guardian Insurance Company, St. Paul Mercury Insurance Company, Traveler Casualty and Surety Company, Travelers Casualty art' Surety Company of America, and United Stases Fidelity and Guaranty Company, and that he. as such, being authorized so to do, executed the foregoing instrument for the purposes therein contained by signing on behalf of the corporations by lihnscif as a duly authorized officer, In Witness Whereof,1 hereunto set my hand and official seal. My Commission expires the 30th day of June, 201 I . 5840.8.06 Printed in U.S.A. `cnark:o a . d.t,featAS-A- Marie C.'lUreaoh, Notary I'r�tlic WARNING:THIS POWER OF ATTORNEY 15 INVALID WITHCUT THE RED BORDER WARNING: THIS POWER OF ATTORNEY IS INVALID WITHOUT THE RED BORDER 'Ellis Power ofAttorney is granted under and by the authority oldie following resolutions adopted by the Boards of Directors of Farmington Casualty Company, Fidelity and Guaranty Insurance Company, Fidelity and Guaranty. insurance Underwriters, hr., Seaboard Surety Company, St. Paul Fire and Marine Insurance Company. S. Paul Guardian Insurance Company. St. Paul Mercury Insurance Company, Travelers Casualty and Surety Company, Travelers Casualty and Surety Company of America. and United States Fidelity and Guaranty Company, which resolutions are now in full force and effect, reading as follows: RESOLVEID, that the Chairman. the President, any Vice Chairman, any Executive Vice President, any Senior Vice President, any Vice President, any Second Vice President, the Treasurer, any Assistant Treasurer, the Corporate Secretary or any Assistant Secretary may appoint Attorneys•in-Fact and Agents to get for and an behalf of the Company and may give such appointee such authority as his or her certificate of authority may prescribe to sign with the Company's name and seal with the Company's seal bonds. recognizanccs, contracts of indemnity. and other writings obligatory ill the nature of a bond, recognizance, or conditional undertaking, aol any of said officers or the Board of Directors at any time may remove any such appointee and revoke the power given him or her: and it is FURTHER RESOLVED, that the Chairman. the President, any Vice Chairman, any Executive Vice President, any Senior Vice President or any Vice President may delegate all or any part of the foregoing authority to one or more officers or employees of this Company, provided that each such delegation is in writing and a copy thereof is tiled in the office of the Secretary; and it is FURTHER RESOLVED, that any bond, recognininee, contract of indemnity, or writing obligatory in the nature of a bond, recognizance, or conditional undertaking shall he valid and binding upon tits: Company when (a) signed by the President, any Vice Chairman, any Executive Vice President, any Senior Vice President or any Vice President. any Second Vice President, the Treasurer, any Assistant Treasurer, the Corporate Secretary or any Assistant Secretary and duly attested and sealed with the Company's seal by a Secretary or Assiautt Secretary; or (b) duly executed (under seal, if required) by one or mare Attorneys -in -Fact and Agents pursuant to the power pmeribcd in his or her certificate or their certificates of authority or by one or more Company officers pursuant 10 a written delegation of authority; and it is FURTHER RESOLVED. that the signature of each of the following officers: President, any Executive Vice Presider, any Senior Vicc President, any Vice President, . tiny Assistant Vice President, any Secretary, may Assistant Secretary, and the seal of the Company may be affixed by facsimile to any power of attomey or to any certificate relating thereto appointing Resident Vic Presidents, Resident Assistant Secretaries or Aitorneys-in-Fact for purposes only of executing and attesting bonds and undertakings and other writings obligatory in the nature thereof, and any such power of attorney : r certificate bearing such facsimile signature or facsimile seal shall he valid and binding upon the Company and any such power so executed and certified by such facsimile signature and facsimile seal shall be valid and binding on tate Company in the future with respect to any bond or understanding to which it is attached. I. Kori M. Johanson, the undersigned, Assistant Secretary, of Farmington Casualty Company, Fidelity and Guaranty Insurance Company, Fidelity and Guaranty Insurance Underwriters, Inc., Seaboard Surely Company, Si. Paul Fire and Marine Insurance Company, Si. Paul Guardian Insurance Company, St. Paul Mercury Insurance Conipany','l'ra+tilers Casualty and Surety Company, Travelers Casualty and Surety Company of America, and United States Fidelity and Guaranty Company do hereby certify that the shove mind foregoing is a true and correct copy of the Power of Attorney executed by said Companies, which is in full forte and effect and has not been re •ilked. IN TES'I'1i41ONY IYIIEREQF, 1 haw. hereunto set my hand and affixed the seals of said Companies thisrolL day of �CA rC) 2U� Kori M. Johann Assistant 'Secretary Te verify the authenticity of this Power of Attorney, call 1-8011.421-35K0 or Contact us at www.stpaultravelersbond.com. Please refer to the Attorney -In -Fact number, the almvc-maned individuals and the derails of the bond to which the power is attached. WARNING:THIS POWER OF ATTORNEY iS INVALID WITHOUTTHE RED BORDER ENCANA.. EnCana Oil & Gas (USA) Inc. EnCana 011 & Gas (USA) 970-285-2825 direct Inc. 970-319-8890 cell 2717 CR 215, Suite 100 970-285-2691 fax Parachute, CO 81535 May 30, 2008 Fred Jarman Garfield County Building and Planning Department, Director 108 8th Street, Suite 401 Glenwood Springs, CO 81601 Re: East Dry Hollow Lope Phase 1 Pipeline Dear Fred: 1 am in receipt of your letter dated May 16, 2008, regarding the County's second review of the above mentioned pipeline. In response to the conditions, therein, I am submitting this letter as confirmation that all of the performance standards listed will be agreed to and that EnCana Oil & Gas (USA) Inc. (EnCana) will comply and that all conditions, pre and post construction, will be met. I appreciate your call back regarding this matter and look forward to the issuance of the Pipeline Development Permit for this pipeline. Please do not hesitate to contact me if you need additional information or have any questions. EnCana Oil & Gas (USA) Inc. Permit and ROW Coordinator Cc: Brenda Linster, Land and Regulatory Advisor -Midstream Services May 16, 2008 Renata Busch Encana Oil & Gas (USA) Inc. 2717 CR 215, Suite 100 Parachute, CO 81635 BUILDING & PLANNING DEPARTMENT RE: Encana East Dry Hollow Loop Phase I Pipeline Dear Renata, Upon a second review, the Application was deemed technically complete on April 23, 2008 and has been reviewed against the submittal requirements required in Resolution 2005 — 53 and required in Section 9.07 of the Zoning Resolution of 1978, as amended. This letter shall constitute Garfield County's review of the project. `�. Proposed Eas7 Dry Harrow B7. Leap Phase 1 Pipeline +/-17222' or+/- 3.3 Mks I. GENERAL STAFF COMMENTS This project generally consists of the construction of 3.27 miles of a 20 -inch low pressure natural gas gathering pipeline which gathers gas from existing Encana pads in the Hunter Mesa / Mamm Creek area approximately 3 miles south of the Rifle Airport in Section 4, T 7 S, R 92 W northwesterly to Section 9, T 7 S, R 92 W, southwesterly thru Section 4 T 7 S, R 92 W and ends at Hunter Mesa Compressor Station. The pipeline delivers the gas to the Hunter Mesa Water Treatment / Compressor Facility. This proposed pipeline will be constructed within an existing disturbed Encana pipeline corridor and is entirely located on fee lands crossing 4 private properties of Dunn, Couey, BJM, and KRK, Ltd. and includes the crossing of County Road 315. All surface use 108 Eighth Street, Suite 401 • Glenwood Springs, CO 81601 (970) 945-8212 • (970) 285-7972 • Fax: (970) 384-3470 agreements and easement contracts are signed and in place for those property owners which agree to the construction of this pipeline. No new land disturbance will occur with this pipeline. Total land disturbance which includes the 75 -foot temporary construction easement will result in 29.66 acres for which a reclamation bond has been supplied. The proposed right-of-way required for this project includes a 75 -foot construction ROW which will be reduced to a 30 -foot permanent ROW once construction is complete and the line is operational. The 20" low-pressure natural gas line will be located in its own trench while maintaining a 15 -foot off set from Encana's existing 6 -inch and 8 -inch lines in the same easement. There are no appurtenant compressors associated with this line. II. REFERRAL COMMENTS Staff referred the Application to the following Agencies / Departments whose comments are included here for review and attached to this letter which is required by Resolution 2005 — 53: A. Burning Mountain Fire Protection District: Burning Mountain Fire Protection District has no issues or questions on the proposed pipeline. We do however reserve the right to monitor the pipeline and the operations in the future. B. City of Rifle Fire Protection District: No comments received. C. Garfield County Road and Bridge Department: A road bore permit for crossing CR 215 (Mamm Creek Road) has already been issued for this project with standard conditions for road bores under County roads. All vehicles hauling equipment and materials for this project shall abide by Garfield County's oversize/overweight system. All vehicles requiring oversize/overweight permits shall have a letter on file with Garfield County Road & Bridge Department from Encana Oil & Gas USA Inc. stating these vehicles can obtain oversize/overweight permits to operate under their road bond on file with Garfield County. Garfield County Road & Bridge Department shall be notified 24 hours prior to the start of the road bore on CR 215. D. County Vegetation Management: • The submitted vegetation and weed management plan is acceptable. • Staff requests that the applicant treat all inventoried noxious weeds in the project area prior to construction activities. Please forward a copy of the application records to: Garfield County Vegetation Management POB 426 Rifle CO 81650 • During construction, before leaving the site, all off road major construction equipment (graders, dozers, etc) working in areas of mapped noxious weeds 2 should be power washed to remove seeds, soil, and vegetative matter. Again, this is only in areas of mapped county listed noxious weeds. Cheatgrass is not a county listed noxious weed. We are primarily concerned about spreading tamarisk, chicory, and Russian knapweed seeds. Washing stations located in areas of mapped noxious weeds will help prevent the spread of noxious weeds. The applicant alludes to the spread of noxious weeds via construction equipment on page two of attachment 5. • The applicant has quantified the surface area to be disturbed and provided a revegetation security. • The applicant shall provide the Vegetation Management Department with the original tags from each seed bag. The seed mix in the Plan shall match the seed mix used in the field. Do not use a seed mix containing yellow sweet clover (Meliiotus offcinalis) or annual yellow sweetclover (M. indicus). • The security shall be held by Garfield County until vegetation has been successfully reestablished according to the Reclamation Standards in the Garfield County Weed Management Plan. It is the responsibility of the applicant to contact the County, upon successful revegetation establishment, to request an inspection for security release consideration. • Any straw or hay bales used in erosion control shall be certified weed free. E. County Oil & Gas Liaison: No comments were received. F. Resource Engineering (on behalf of Garfield County): Indicated that the application has met the required standards in Section 9.07.06 of the County's Zoning Regulations. III. SUMMARY OF REVIEW The 3.29 mile pipeline corridor will be entirely located within an existing pipeline easement and will not result in any new cuts / land disturbance and has met all the zoning requirements for this pipeline. Therefore, upon substantive review of the documents submitted against the required standards and criteria in Section 9.07.06, Staff has made a determination of Approval with Conditions for the "Encana East Dry Hollow Loop Phase I Pipeline" for Encana Oil & Gas (USA) Inc.. The specific conditions include the following: 1. Any equipment used in construction or operation of a pipeline must comply with the Colorado Oil and Gas Conservation Commission Rules and Regulations, Section 802, Noise Abatement. Additionally, all power sources used in pipeline operations shall have electric motors or muffled intemal combustion engines. 2. Pipeline operations shall be located in a manner to minimize their visual impact and disturbance of the land surface. Facilities shall be painted in a uniform, non - contrasting, non -reflective color, to blend with the adjacent landscape. Right-of-way 3 shall be located in existing disturbed areas unless safety or visual concems or other adverse surface impacts clearly dictate otherwise. 3. All access and oversize or overweight vehicle permits shall be obtained from the County Road & Bridge Department prior to beginning operation. Any new roads or intensified driveway accesses created as a result of the pipeline construction, intended to be permanent for maintenance and repair operations shall be placed behind a locked gate or other barriers preventing use by recreational vehicles. Any gates or barriers need to be consistent with the surface owner's preferences. 4. All vehicles working within Garfield County Right of Ways will be licensed and registered in the State of Colorado. All vehicles hauling equipment and materials for the pipeline construction will abide by Garfield County Road & Bridge Departments oversize/overweight regulations. All vehicles requiring an oversize/overweight permit will send a letter showing proof that they can operate under a known bond holder on file with Garfield County Road & Bridge Department before a permit will be issued. 5. The Applicant shall provide the County with a digital alignment of the pipeline once constructed in a format readable to the County Geographic Information System (GIS) analyst. 6. In no case shall an operator engage in activities which impact Federal or State threatened and endangered species. 7. Air contaminant emissions shall be in compliance with the applicable permit and control provisions of the Colorado Air Quality Control Program, Title 25, Resolution 7, C.R.S. 8. All operations shall comply with all applicable Federal and State Public Health and Environment, Noise, and Air and Water Quality Control standards. 9. Any proposed waste disposal or treatment facilities shall comply with all requirements of the County Individual Sewage Disposal System Regulations. 10. Should an abandoned pipeline be removed, it will be subject to the original revegetation and weed management requirements in the original application. 11. There will be no entrances to any County roads for the project and the only impact to the County road system will be during the construction of the pipeline project. 12. That the Applicant satisfy the comments from the County Vegetation Director as follows: 13. Staff requests that the applicant treat all inventoried noxious weeds in the project area prior to construction activities. Please forward a copy of the application records to: Garfield County Vegetation Management, PO Box 426, Rifle CO 81650 4 14. During construction, before leaving the site, all off road major construction equipment (graders, dozers, etc) working in areas of mapped noxious weeds should be power washed to remove seeds, soil, and vegetative matter. Again, this is only in areas of mapped county listed noxious weeds. Cheatgrass is not a county listed noxious weed. We are primarily concemed about spreading tamarisk, chicory, and Russian knapweed seeds. Washing stations located in areas of mapped noxious weeds will help prevent the spread of noxious weeds. The applicant alludes to the spread of noxious weeds via construction equipment on page two of attachment 5. 15. The applicant shall provide the Vegetation Management Department with the original tags from each seed bag. The seed mix in the Plan shall match the seed mix used in the field. Do not use a seed mix containing yellow sweet clover (Melilotus offcinalis) or annual yellow sweetclover (M. indicus). 16. The security shall be held by Garfield County until vegetation has been successfully reestablished according to the Reclamation Standards in the Garfield County Weed Management Plan. It is the responsibility of the applicant to contact the County, upon successful revegetation establishment, to request an inspection for security release consideration. 17. Any straw or hay bales used in erosion control shall be certified weed free. This determination has been sent to the Board of County Commissioners to determine if they wish to call up the matter. Staff will let you know if this matter is called up by May 30, 2008. (Note, the permit cannot issue and no work can be commenced until all conditions have been met.) Do not hesitate to contact this office if you have any questions. Very truly yours, Fred A. Jarman, AI P Director, Building & Pla Department 970.945.8212 5 Please Send Application to the Following Referral _ gencies DT(( Application Name: L f1COtjl0. Q; f 6A-5 (ASA) , _ eckS fit tID it, c,) 4./: -Jur Date Application Sent: Mt. Sopris Soil Conservation District Bookcliff Soil Conservation District Town of DeBeoue City of Rifle Town of Basalt Town of Carbondale City of Glenwood Springs Town of New Castle Town of Silt Town of Parachute Eagle County Planning,Deparment Rio Blanco County Planning Department Pitkin. County Planning Deparunent Mesa County Planning Department X Burning Mtn. Fire District ./ Town of Silt Fire Department x Rifle Fire Protection District ✓ Grand Valley Fire Protection District Carbondale Fire Protection District Glenwood Springs & Rural Fire RE -1 School District RE -2 School District School District 16 Carbondale Sanitation District Battlement Mesa Water & Sanitation Spring Valley Sanitation District West Glenwood Sanitation District Vlid valley Metropoiitan Sanitation District Roaring- Fork Water and Sanitation District Holy Cross Electric (Roaring Fork, S. of Co. River west) Public Service Company (N of Cu. River west) KN Energy (S. of Co. River, Roaring Fork ) Western Slope Gas Company US West Communications (G.S. & C'dale area) l TS West Communications (N.C., Silt. Rifle) US West Communications (Rifle, B,M., Parachute) AT&T Cable Service Colorado State Forest Service Colorado Department of Transportation Colorado Division of Wildlife (GWS Office) Colorado Division of Wildlife (GJ office) Colorado Dept. of Public Health & Environment Colorado Division of Water Resources Corrado Geological Survey Colorado Water Conservancy Board Colorado Mined Land Reclamation Board. Bureau of Land Management Department of Energy Western Area Power Bureau of Reclamation — Western Colorado Art17, Office, US Corps of Engineers Northwest Options of Long Term Care. Roaring Fork Transportation Authority Garfield County Road & Bridge ✓ X Garfield County Vegetation (Steve Anthony) Garfield County Housing Authority Garfield County Engineer (de€€ 1 err} - x Garfield County Oil and Gas Auditor.( Garfield County Sheriff Department REFERRAL FORM Garfield County Building and Planning Department 108 8th Street, Suite 401, Glenwood Springs, CO 81601 (970)945-8212/Fax:(970)384-3470 Date Sent: April 25, 2008 Return Requested: May 12, 2008 File Name(s) Project Name(s) Type of Application(s) Encana Oil & Gas (USA) Inc. East Dry Hollow Loop Ph 1 Pipeline Pipeline Development Plan Application Staff Planner: Fred Jarman (fredjarman@garfield-county.com) Phone: (970) 945-8212 Applicant: Encana Oil & Gas (USA) Inc. Phone: (970) 285-2825 Contact Person: Renata Busch, Pert & Right -of -Way Coordinator Phone: (970) 285-2825 Location: Begins just south of the P&E Pad in Section 4, Township 7S, Range 92W; southwesterly to Section 9, T 7S, R 92W; northwesterly thru Section 4, T 7S, R92W and ends at the inlet to Hunter Mesa Compressor Station. Summary of Request: Request is for approximately 3.27 miles of 20" diameter, 0.281" wall X52/60 FBE buried, steel, natural gas pipeline. The Garfield County Planning Department has received a land use request as referenced above. Your comments are an important part of the evaluation process. In order to review all appropriate agency comments and incorporate them into the Staff Report, we request your response by Monday Mav 12, 2008. GARFIELD COUNTY School District Engineering Review Road & Bridge County Attorney Vegetation Manager County Sheriff's Dept. COLORADO STATE Water Resources Geological Survey (Fee) Health Department Forest Service (Fee) Wildlife Division SERVICE DISTRICT U S West Public Service Holy Cross Electric G.S./Carbondale Fire District Silt/New Castle/Rifle Fire District Soil Conservation District Planning Commission BOCC ""'RESDURCE .I.II.I.. ..... ■■.■■ E N G I N E E R I N G INC Mr. Fred Jarman Garfield County Building and Planning Dept 108 8th Street, Suite 201 Glenwood Springs CO 81601 RE: EnCana East Dry Hollow Loop Phase I Pipeline Dear Fred: May 13, 2008 At the request of Garfield County, Resource Engineering, Inc. (RESOURCE) has reviewed the Pipeline Development Application by EnCana Oil and Gas (USA), Inc. for the East Dry Hollow Loop Phase I Pipeline. The submittal must meet the criteria in Section 9.07 of the GARCO Zoning Resolution. Based on our review, we believe the application meets the technical standards and criteria of Section 9.07.06 of the GARCO Zoning Resolution. Please call if you have any questions or need additional information. Sincerely, RESOURCE ENGINEERING, INC, Michael J. Erion, P.E. Water Resources Engineer MJE/mmm 885-61.0 K:ICrients1885 GARC0161.0 ENCANA EAST DRY HOLLOW lfred Jarman phase 1 pipeline.doc RC: tI`iiD MAY 1 4 2008 GARt;LLQ, BOUNTY BUILDING & PLANNING Consulting Engineers and Hydrologists 909 Colorado Avenue • Glenwood Springs, CO 81 801 • (970) 945-8777 • Fax (970) 945-1137 ENCANA.M EnCana Oil & Gas (USA) Inc. EnCana Oil & Gas (USA) Inc. 2717 County Road 215 Suite 100 Parachute, CO 81635 April 22, 2008 Fred Jarman Garfield County Building and Planning Department 108 8th Street, Suite 401 Glenwood Springs, CO 81601 tel: (970) 285-2825 fax: (970) 285-2691 renata.busch@encana.com www.encana.com Re: Administrative Pipeline Permit for East Dry Hollow Loop Phase 1 Pipeline Dear Fred: This letter is in response to your request for additional information in order for you to proceed with the review of our Application. Section 9.07.04(10)... requires that all applications contain a "Sensitive Area Survey"... there was no information regarding cultural, archeological, or paleontological resources along the proposed corridor. Please provide a study conducted by a qualified professional that addresses these areas of concern. Attached is a study conducted by a Grand River Institute, which addresses cultural and archeological resources along the proposed corridor. No resources have been recorded within 300 meters of the proposed corridor. If you have any additional questions or concerns, please do not hesitate to contact me. Sincerely,___ Renata Bus h Permit and Right -of -Way Coordinator South Piceance 4./t177 Z -Lf -c2 Cc: Brenda Linster-Land and Regulatory Advisor -Midstream Services Encl RECEIVED APR 2 3 2008 GARFIELD COUNTY BUILDING & PLANNING Report on the Class I Cultural Resource Inventory for a Sensitive Area Study on Private Lands for the Proposed East Dry Hollow Loop Phase I in Garfield County, Colorado, for EnCana Oil and Gas (USA) Inc. GRI Project No. 2824 17 April 2008 Prepared by Carl E. Conner (Principal Investigator) and Barbara Davenport Grand River Institute P.O. Box 3543 Grand Junction, Colorado 81502 State of Colorado Antiquities Permit No. 2008-63 Submitted to Board of County Commissioners Garfield County, Colorado Abstract At the request of EnCana Oil and Gas (USA) Inc., Grand River Institute conducted a Class I cultural resources inventory for a Sensitive Area Study in relation to an anticipated Special Use Permit Application with Garfield County for the proposed East Dry Hollow Loop Phase I pipeline project. The study is for a linear route of 3.3 miles and is located in the East Mamm Creek area about 5.0 miles south of Silt, Colorado. The Class I inventory was undertaken to ensure the project's compliance with county, state, and federal laws and regulations governing the identification and protection of cultural resources on privately owned lands that will be affected by a government action. This work was performed under State of Colorado Antiquities Permit No. 2008-63. The purpose of the cultural resources investigation was to identify previously recorded resources within or near the project area that may be adversely affected by the proposed action and to evaluate the potential of additional such resources in the project area. The Class I files search and report preparation were performed during the first two weeks of April 2008. Although sites occur near the project area, none have been recorded within 300 meters of the proposed pipeline. Accordingly, a determination of "no effect" for the project is recommended pursuant to Section 106 of the National Historic Preservation Act (36 CFR 800). ii Table of Contents Introduction 1 Location of the Project Area 1 Environment 1 Paleoclimate 3 Files Search Results 4 Archaeological Assessment of Cultural Resources 6 Relevant Historical Background post -1880 8 Summary and Recommendations 9 References 11 List of Figures and Tables Figure 1. Project location map 2 Table 1. List of projects previously conducted near the study area 4 Table 2. List of previously recorded cultural resources near the study area 5 iii Introduction At the request of EnCana Oil and Gas (USA) Inc., Grand River Institute conducted a Class I cultural resources inventory for a Sensitive Area Study in relation to an anticipated Special Use Permit Application with Garfield County for the proposed East Dry Hollow Loop Phase I pipeline project. The linear route of 3.3 miles is located in the East Mamm Creek area. This work was performed under State of Colorado Antiquities Permit No. 2008-62. Carl E. Conner, Principal Investigator, was assisted by archaeologist Barbara J. Davenport. The Class I files search and report preparation were performed during the first two weeks of April 2008. The Class I inventory was undertaken to ensure the project's compliance with state and federal legislation governing the identification and protection of cultural resources on privately owned lands that will be affected by a government action. It was done to meet requirements of the National Historic Preservation Act (as amended in 1992), the National Environmental Policy Act of 1969 (42 U.S.C. 4321), the Federal Land Policy and Management Act of 1976 (43 U.S.C. 1701), and the Archaeological Resources Protection Act of 1979 (16 U.S.C. 470aa et seq., as amended), and Article 80.1, Colorado Revised Statutes. These laws are concerned with the identification, evaluation, and protection of fragile, non-renewable evidence of human activity, occupation, and endeavor reflected in districts, sites, structures, artifacts, objects, ruins, works of art, architecture, and natural features that were of importance in human events. Such resources tend to be localized and highly sensitive to disturbance. All work was performed according to guidelines set forth by the Office of Archaeology and Historic Preservation (OAHP) of the Colorado Historical Society. Location of the Project Area The study area is located approximately and. about 5.0 miles south of Silt, Colorado. It lies in T. 7 S., R. 92 W., Sections 4, 5, 6, 7, and 9; 6'h P.M. (Figure 1) Environment The project area is within the Piceance Creek Basin, one of the major geologic subdivisions of Colorado. The Piceance Creek Basin is an elongate structural downwarp of the Colorado Plateau province that apparently began its subsidence approximately 70 million years ago during the Laramide Orogeny. Sediments from surrounding highlands were deposited in the basin, accumulating to a thickness of as much as 9000 feet by the lower Eocene epoch, when subsidence ceased. Regional uplift occurred in the Late Tertiary, and erosion of the area has continued since (Young and Young 1977:43-46). The Wasatch formation underlies the study area. It consists of a series of interbedded variegated mudstones, sandstones, and siltstones of varying colors --brick red, tan, white, and purple. Forming after a period of erosion, the Wasatch is the first extensive continental deposit following those of the Cretaceous -age Mesaverde Group. Sediments are stream, floodplain, and swamp deposits. In the west 1.0 mile portion of the study area, Quaternary gravel deposits overlay the Wasatch formation. 1 The project area rests on the benchland south of the Colorado River in the broad alluvial valley that borders East Mamm Creek. Elevations average about 5900 feet on that portion of the valley floor. This relatively low elevation is host to a cool semiarid climate where temperatures can drop to -10 degrees F during the winter and summer temperatures may reach 100 degrees F; there is a maximum of 120 frost free days and the annual precipitation is about 12 inches. The surrounding higher elevations are characterized as cooler and moister. Annually, the high mountain temperatures could average 5 degrees cooler and the precipitation as much as 14 inches greater that the surrounding low elevations (USDA 1978:244). There are several generalized vegetation communities in the area including riparian along the creek, big sage and saltbush shrubland in the valley bottom, and juniper/oak woodland on the surrounding mountain slopes. However, the prehistoric streamflow and habitats along East Mamm Creek have been significantly altered by historic EuroAmerican water diversions, reservoirs, and irrigation of agricultural fields. The valley bottom has also changed due to infringement by pipelines, gravel operations, roadways and bridges. Ranchers currently use the valley primarily for livestock grazing. Ground visibility ranges from 20% in the relatively recently undisturbed areas to about 90% in the cultivated fields and along the roads. These communities support a variety of wildlife species. Mule deer, elk, coyote, and black bear are common, as are cottontail rabbits, and various rodents. Mountain lion, bobcat, fox, skunk, badger, and weasel are also likely inhabitants. Bird species observed in the area include the wild turkey, jay, raven, red -shafted flicker, long-eared owl, and various raptors. Although the present day land use of the project area (including energy development, grazing, ranching and farming) has pushed some of the large mammals into the surrounding mountains, deer and wild turkeys make heavy use of the cultivated fields during the months of colder temperatures. Also, the creek contains several beaver ponds and wetlands that are supported primarily from snowmelt, groundwater, springs, and irrigation runoff. Paleoclimate Relatively small changes in past climatic conditions altered the exploitative potential of an area and put stress upon aboriginal cultures by requiring adjustments in their subsistence patterns. Therefore, reconstruction of paleoenvironmental conditions is essential to the understanding of population movement and cultural change in prehistoric times (Euler et al. 1979). To interpret whatever changes are seen in the archaeological record, an account of fluctuations in past climatic conditions must be available or inferences must be made from studies done in surrounding area. Generally, only gross climatic trends have been established for western North America prior to 2000 BP (Antevs 1955; Berry and Berry 1986; Mehringer 1967; Madsen 1982; Wendlund and Bryson 1974; Peterson 1981). Scientific data derived from investigations of prehistoric cultures and geoclimatic and bioclimatic conditions on the southern Colorado Plateau over the past two millennia have achieved a much greater degree of resolution (Dean et al. 1985). 3 Files Search Results Cultural resource investigations in the region have yielded surface diagnostic artifacts and excavated cultural materials consistent with the regional cultural history. Evidence provided by chronometric diagnostic artifacts and radiocarbon analyses indicate regional occupation during the Paleoindian Era, Archaic Era, Formative Era, and Protohistoric Era. Historic records suggest occupation or use of the region by EuroAmerican trappers, settlers, miners, and ranchers as well. Overviews of the prehistory and history of the region are provided in documents published by the Colorado Council of Professional Archaeologists' entitled Colorado Prehistory: A Context for the Northern Colorado Plateau (Reed and Metcalf 1999), and by the Colorado Historical Society entitled Colorado Plateau Country Historic Context (Husband 1984). A file search for known cultural resources within the project area was made through the Colorado Historical Society's Office of Archaeology and Historic Preservation. This review identified nine reports that have been done in the general area, which are listed in Table I. Table 1. List of projects previously conducted within about 1.0 mile of the study area. Survey ID Project/author/date GF.LM.NR823 Title: Class III Cultural Resource Inventory for a Short Segment (500 Feet) of a Proposed Surface Water Pipeline in Garfield County, Colorado the Bill Barrett Corporation (GRI No. 2658)(BLM GSFO# 1106-13) Author: Davenport, Barbara Date: 06/05/2006 Contractor: Grand River Institute GF.LM.R262 Title: Class III Cultural Resource Inventory for the Calpine Natural Gas Company's Gibson Gulch Prospect 2-d Seismic Line in Garfield County, Colorado Author: Brogan, John M. Date: 10/01/2003 Contractor: Metcalf Archaeological Consultants GF.LM.R100 Title: Snyder Oil Company HMU Federal 8-1 Well Location & Access: Class III Cultural Resource Inventory, Garfield County, Colorado (S#5497-4) Author: McKibbin, Anne Date: 04/17/1997 Contractor: Metcalf Archaeological Consultants GF.LM.R110 Title: Intensive Cultural Resource Survey of Vessels Oil & Gas Co. Mamm Creek Federal 14-33-6-92/11-33-6-92 Well Relocation & Access Road/pipeline, Garfield County, Colorado (S#8297-2) Author: Brechtel, James M. Date: 01/16/1997 Contractor: James M. Brechtel 4 Survey ID Project/author/date GF.LM.NR451 Title: Snyder Federal Hmu 5-16 Well Project, Garfield County, Colorado, Cass III Cultural Resource Inventory Author: Metcalf, Sally J. Date: 09/16/1996 Contractor: Metcalf Archaeological Consultants, Inc. GF.LM.NR448 Title: Cultural Resource Survey of Vessels Oil & Gas Co. 13-33-6-92 & 14-33-6-92/11-33-6-92 Wells & Associated Access Road & Pipeline, Garfield Co., Co Author: Brechtel, James M. Date: 07/23/1996 Contractor: Consulting Archaeologist GF.LM.R94 Title: Intensive Cultural Resource Survey of Porter Federal 14-28-6-92 and Mamm Creek Federal 12-33-6-92 Well Locations, Access Roads & Pipelines Garfield County, Colorado (And Addendum)(S#8296-la & S#8296 -2b) Author: Brechtel, James M. Date: 03/20/1996 Contractor: James M. Brechtel Consulting Archaeologist for Vessels Oil and Gas Co. GF.LM.NR171 Title: Rifle Land Sale Parcel 39 (S#863) Author: High, Mary K. Date: 05/15/1984 Contractor: Bureau of Land Management GF.LM.NR144 Title: Cultural Resource Inventory of Northwest Pipeline Corporations Rifle Boulton #1 Trunk a Extension Garfield County, Colorado (S#575) Author: Alexander, Robert K. Date: 01/02/1980 Contractor: Grand River Consultants, Inc. The files search identified seven sites that occur within about one mile of the study area (Table 2). None occur within 300 meters of the proposed pipeline. Table 2. List of previously recorded sites within about 1.0 mile of the project area. Site ID Site Type Assessment 5GF260 Open Camp Not Eligible - Field 5 Site ID Site Type Assessment 5GF355 Historic Structure Not Eligible - Field 5GF366 Mamm Creek School Not Eligible - Field 5GF2309.1 Historic Ditch Not Eligible - Officially 5GF2381 Open Camp Not Eligible - Field 5GF2382 Open Camp Not Eligible - Officially 5GF2429 Isolated Find Not Eligible - Field Archaeological Assessment of Cultural Resources along the North Edge of Grand Mesa Previous archaeological studies in the general vicinity have suggested regional occupation for as long as 8000 years, although recently an inventory of block units east of this study area within the Doghead GAP (Conner et al. 2006) provided direct evidence of the presence of Foothill -Mountain Paleoindian occupation at 5GF1323, which pushes the regional prehistoric occupation dates back to about 10,000 yr BP. Historic records also indicate a permanent Euro - American presence in the region began as early as the late 1880's. Notably, the prehistoric sites in the river corridor have been impacted by the 130 year occupation and use of the area by EuroAmericans. Notably, many of the newly and previously recorded resources in the general area indicate it was intensively occupied during the Protohistoric Era. Unfortunately for many of the sites where wickiups were present, post -cutting and wood collection by the Historic EuroAmerican settlers and ranchers over the past 125 years has nearly wiped out evidence of their presence. Also, surface collection of diagnostic artifacts has impacted the sites and affected the assignment of cultural/temporal associations. In general, although the study area was probably not continuously occupied prehistorically, it seems to have offered an attractive environment for gathering, floral processing, hunting, as well as lithic procurement and processing. Site density in the surrounding mesa areas is high, probably due to two factors: good access to permanent water, and strategic topographical positioning on the ridge tops and open benches. Such camp placement provided a good view of the surrounding lower elevations for purposes of hunting and protection. The heavily vegetated canyon bottoms were accessed for reasons of acquiring water and for the procurement of floral and faunal resources. The apparent differences in the characteristics of the upland and lowland sites may be due to factors other than cultural selection. The lowland sites are subjected to more artifact collecting than the uplands, and the areas along the Colorado River have been subject to few cultural resource surveys. The upland area exhibits a very thick vegetation cover that may be limiting discovery of features and additional artifacts. 6 Lowland sites exhibit greater variability in site types. While the uplands are limited to isolated finds, open camps, and lithic scatters; the lowlands contain these site types and open architectural sites, sheltered sites, and a single tool stone procurement area. The lowland sites contain higher frequencies of cultural features or evidence of features. These features include fire -cracked rock scatters, charcoal stains, hearths, stone structures, and wickiups. All of the prehistoric sites contain low numbers of artifacts, including very limited numbers of debitage, bifacial tools and expedient tools. This suggests conservation, curation, and reuse of flaked stone tools in an area where tool material sources are limited. Lowland sites tend to be situated in the pinyon -juniper vegetation community in greater frequencies than is suggested by the relative proportion of the pinyon -juniper to other vegetation communities. The sites in the uplands are distributed proportionally to the size of the vegetation communities, with the mountain shrub and sagebrush communities exhibiting the highest site density. Too little is known of the age of the sites to make any definitive statements. The distribution of site ages based on projectile points and ceramics is generally the same as portrayed in Reed and Metcalf (1999), but the lack of absolute dating precludes any conclusions in this area. Lithic scatters exhibit a smaller site size than open camps in both the lowland and upland settings. Isolated finds are distributed across a wider range of slopes than lithic scatters or open camps. The differences in the type and distribution of historic sites are: Sites in the uplands are limited to sheep and cattle raising activities and are primarily post -1889. Sites in the uplands are distributed proportionally to the size of the vegetation communities, with the mountain shrub and sagebrush communities exhibiting the highest site density. Sites in the lowlands display a greater diversity in types and are found mainly in the pinyon -juniper and sagebrush zones. The historic sites in the lowlands are concentrated near transportation corridors and near permanent water sources, particularly the habitation sites. Sites indicative of particular economic activities are spread across the landscape. During 1980, the BLM 's Glenwood Springs Resource Area was subject to an archaeological survey that randomly sampled three percent of its managed lands. A total of 17,400 acres was surveyed for cultural resources. As a result, 58 prehistoric sites and 2 historic sites were recorded, an average of about 2 sites per section (.0034/acre). Three types of prehistoric sites were distinguished by the study; limited activity areas, short-term camps, and large habitation sites. These were classified on the basis of site size and the diversity of artifacts/activities represented. Notably, the sites were unevenly distributed and varied by vegetation community. The highest site density, about 5.0 sites/section (.0078/acre), occurred in pinyon/juniper and sagebrush communities. Concurrently, the greatest number of sites located during the survey tended to occur in or near the pinyon/juniper community. Other environmental factors found to be important during the statistical analysis of the settlement patterns included 1) vertical distance between the site and the primary water source is a greater controlling factor that the horizontal distance, 2) sites tend to be near or on points of vantage, 3) sites tend to be located 7 in forested areas, preferably with a southern exposure and, 4) sites tend to occur on flat ground (less than 40% grade) in areas of relatively low surface relief (Burgess et al. 1980:108-120, 138- 139). In general, the region exhibits a relatively low site density and sites tend to cluster near permanent water sources. Relevant Historical Background post -1880 The Ute people occupied large areas of Westem Colorado until about 1881. Due to the White River Ute's discontent that lead to the "Meeker Massacre," as the incident became know, a congressional investigation lead to the Treaty of 1880 that stipulated the removal of the White River bands to the Uintah Reservation in northeastern Utah. The Uncompahgre band was to be given a small reservation in the vicinity of the confluence of the Colorado and Gunnison Rivers. Aware of the value of these agricultural lands, however, the commission charged with enforcing the terms of the treaty, under the direction of Otto Mears, manipulated the location process using a loophole in the treaty language, and the Uncompahgres were given lands in Utah near the Uintah Reservation. The Southern Ute bands were left on the small reservation in southwestern Colorado that had been given them by the Treaty of 1873. On 1 September 1881, the last of the Utes were moved to their new reservations in Utah, and western Colorado was completely opened to the whites. Interest in the potential agricultural lands of westem Colorado (namely the Uncompahgre, Gunnison, Colorado, Dolores, San Miguel, White, and La Plata River valleys) had been growing for some time prior to the Utes' banishment, and by the spring of 1881 frontier towns closest to the Ute lands were "crowded with people, anxious to enter the Reservation and take possession of the most desirable locations (Haskell 1886:2)." Only days after the last of the Utes had been expelled, settlers began rushing onto the reservation lands. Settlement activity spread quickly -- during the autumn months of 1881 land claims were staked, townsites were chosen, and railroad routes were surveyed (Haskell 1886, Borland 1952, Rait 1932). However, because the former reservation lands were not officially declared public lands until August 1882, the first year of settlement activity was marked by a degree of uncertainty regarding the legality of land claims. When finally announced, the 1882 declaration did not allow home -stead entries on the newly opened lands, but only pre-emptions, or cash entries, at the rate of $1.25 per acre for agricultural land, $5.00 per acre for mineral land (Borland 1952:75). By 1895, the major portion of the land along Mamm Creek had been claimed, mostly under Cash Entry patents. The settlers raised their own food and availed themselves of the plentiful game in the area. Gardens, hay fields, and orchards were planted, and irrigation ditches were dug to divert the creek's water to cultivated fields. Large herds of cattle and sheep were accumulating, grazing the valley floor and the vast open range above, driven to the uplands via trails leading up the various gulches. 8 Because the area was still fairly remote, competition for lands had not yet begun. Travel in and out of the Rifle area was restricted to horse and/or wagon. There were several well-developed Ute trails, and in the early 1880s, the federal government had built the aforementioned road between the White and Grand Valleys. In 1885 a toll road opened along the Grand River between Rifle and Grand Junction; prior to the building of this road through DeBeque Canyon, the route to Grand Junction had been a two-week journey "through the Cedar Hills, up Kimball Creek...down the "Sawtooth Range to Fruita and then back to Grand Junction" (Murray 1973:5). But, despite this network of trails and roads, Parachute remained pretty much isolated. With the corning of the D&RG railroad in 1890, however, new pressures were brought to the area. More and more settlers arrived, competing not only for arable land but also for grazing privileges on the unpatented public domain of the surrounding uplands. Increasing numbers of cattle and sheep were imported, some being run as commission cattle for outside investors (ibid:84). Open warfare between cattle and sheep ranchers ensued, resulting in the slaughter of thousands of animals. Four thousand sheep belonging to Messrs. Starkey and Charlie Brown were killed by masked men who tried to drive the animals over cliffs at the head of a Clear Creek tributary and above the Grantee Schoolhouse (LaPoint et al. 1981:3-51). Another 4000 sheep belonging to J.B. Hurlburt were driven to their deaths above Ben Good Creek, a tributary of East Fork. The animosity between cattlemen and sheepmen continued into the 1900s. Finally, Congress passed the Taylor Grazing Act in 1934, bringing to an end to the free range by providing for regulated grazing and an end to the Sheep -Cattle Wars. Cash Entry, Desert Land, and Homestead patents continued to be granted into the 1920s and 30s. Ranching and farming were still the most important economic activities in the Parachute area and remained so until the 1960s and 1970s when many of the farms and ranches of the region were bought up by large companies interested in the large-scale extraction of oil shale and natural gas. Summary and Recommendations The National Historic Preservation Act of 1966 (NHPA) directs that federal agencies protect cultural resources that possess significant values. Significance is a quality of cultural resource properties that qualifies thein for inclusion in the NRNP. The statements of significance included in this report are field assessments that support management recommendations to the State Historic Preservation Officer (SHPO). The final determination of site significance is made by the controlling agency in consultation with the SHPO. The Code of Federal Regulations was used as a guide for site evaluations. Titles 36 CFR 50, 36 CFR 800, and 36 CFR 64 are concerned with the concepts of significance and (possible) historic value of cultural resources. Titles 36 CFR 65 and 36 CFR 66 provide standards for the conduct of significant and scientific data recovery activities. Finally, Title 36 CFR 60.6 9 establishes the measure of significance that is critical to the determination of a site's NRHP eligibility, which is used to assess a site's research potential: The quality of significance in American history, architecture, archaeology, and culture is present in districts, sites, buildings, structures, and objects of State and local importance that possess integrity of location, design, setting, materials, workmanship, feeling, and association, and a) that are associated with events that have made a significant contribution to the broad patterns of history; or b) that are associated with the lives of persons significant in our past; or c) that embody the distinctive characteristics of a type, period, or method of construction, or that represent the work of a master, or that possess high artistic values, or that represent a significant and distinguishable entity whose components may lack individual distinction; or d) that have yielded, or may be likely to yield, information important in the prehistory or history. The eligibility determination and consultation process is guided by Section 106 of the NHPA (36 CFR 60, 63, and 800). Final determinations of National Register eligibility and effect are made by the controlling agencies in consultation with the State Historic Preservation Officer. The Class I files search and report preparation were performed during the first two weeks of April 2008. Although sites occur near the project area, none have been recorded within 300 meters of the proposed pipeline. Accordingly, a determination of "no effect" for the project is recommended pursuant to Section 106 of the National Historic Preservation Act (36 CFR 800). 10 References Antevs, E. 1955 Geologic -climate dating in the west. American Antiquity 20:317-355. Borland, Lois 1952 Ho for the reservation; settlement of the Western Slope. Colorado Magazine 29(1):56-75. Berry, Claudia F. and Michael S. Berry 1986 Chronological and Conceptual Models of the Southwestern Archaic. In: Anthropology of the Desert West, ed. by Carol J. Condie and Don D. Fowler, pp. 253-327. University of Utah Anthropological Papers No. 110. Salt Lake City. Burgess, Robert J.; Kenneth L. Kvamme; Paul R. Nickens, Alan D. Reed; and Gordon C. Tucker 1980 Class II cultural resource inventory report of the Glenwood Springs Resource Area, Grand Junction District, Colorado. Ms on file, Bureau of Land Management, Grand Junction. Conner, Carl E., James C. Miller and Nicole Darnell 2006 Class III (intensive) cultural resource inventory of three block acreages within the South Parachute Geographic Area Plan (GAP) domain in Garfield County, Colorado, for Williams Production RMT. Ms on file, Bureau of Land Management, Glenwood Springs Field Office. Dean, Jeffery S.; R. C. Euler; G. J. Gumerman; F. Plog; R. H. Hevly; and T. N.V. Karlstrom 1985 Human behavior, demography and paleoenvironment on the Colorado Plateau. American Antiquity 50(3):537-554. Euler, Robert C.; G. J. Gumerman; Thor N.V. Karlstrom; J, S. Dean; and Richard H. Hevly 1979 The Colorado Plateaus: Cultural dynamics and paleoenvironment. Science 205(4411):1089-1101. Haskell, Charles W. 1886 History and Description of Mesa County, Colorado. Edited and published by the Mesa County Democrat, Grand Junction. Husband, Michael B. 1984 Colorado Plateau Country Historic Context. Colorado Historical Society, Denver. 11 LaPoint, Halcyon, Brian Aivazian, and Sherry Smith 1981 Cultural resources inventory baseline report for the Clear Creek Property, Garfield County, Colorado, Volume I. Laboratory of Public Archaeology, Colorado State University, Fort Collins. Madsen, David B. 1982 Great Basin paleoenvironments: summary and integration. In:Mand and Environment in the Great Basin, D.B. Madsen and J.F. O'Connell, editors. Society of American Archaeology Papers No. 2, pp.102-104. Washington, D.C. Mehringer, Peter J. 1967 Pollen analysis and the alluvial chronology. The Kiva 32:96-101. Murray, Erlene D. 1973 Lest We Forget—A Short History of Early Grand Valley, Colorado, Originally called Parachute, Colorado. Quahada, Inc., Grand Junction. Peterson, Kenneth P. 1981 10,000 years of change reconstructed from fossil pollen, La Plata Mountains, southwestern Colorado. Unpublished Ph.D. dissertation, Department of Anthropology, Washington State University, Seattle. Rait, Mary 1932 History of the Grand Valley. M.A. thesis, University of Colorado, Boulder. Reed, Alan D. and Michael D. Metcalf 1999 Colorado Prehistory: A Context for the Northem Colorado River Basin. Colorado Historical Society, Denver. USDA Soil Conservation Service 1978 Technical Guide IIE: Range Site Descriptions. Wendlund, Wayne M. and Reid A. Bryson 1974 Dating climatic episodes of the Holocene. Quaternary Research 4:9-24. Young, Robert G. and Joann W. 1977 Colorado West, Land of Geology and Wildflowers. Wheelwright Press, Ltd. 12 0 0 O 40M 0 O 0 0 0 0 R M 0 0 0 M 0 0 O 267000 268000 269000 270000 IP �ti'c 1 •I 'r' r' b� j ; I; ` • Hunter Mesa (1963/1987) Quadrangle Map �; moi- 1. _� ff _- / ' •}•// ,lel. 11 ,1 k /, ,' , _` .. ,1 is/ �! 'A / .r il / 1' Garfield County - Colorado U.S.G.S. 7.5' Series (topographic) Scale 1:24000 1 ` �/���{` ly1l-I f l t /�- " yl �'`. / ; ' 1� ' , (( 4 I I �I /'� �% /} , co Contour Interval 40 Feet T. 7 S., R. 92 W., 6th P.M. Zone 13 NAIL 1983 Nk'l • i n J ` ",'r(!� ~� J/tel ! r 1 1 LIL1 r t/ 4 . 1 , 1 f 1; 1 mo\ y 59 +1a° i ) rt._..- � R + L nil r 5- j � f ' J• 1',F �; ,, t n� \ r.; ' v te'Land y,Nl' 1.\,,k."` 1'' ,) ' ; t, 1/- East Dry Hollow Loop ` ./ hase 1 Pipeline _, •. , \1'. 1.;,./.: M [ i I70 II � :(...< I`¢ 1 I �/ `r 1 '�- t�j; ' �', fes. 0 r:r;_�' A '_-�y ` � 1. � • i _ 7:::::: ' 1 \ Pt! 1^� f / •� ( 8axJ4 �. . � I ." i y/ +;JCA f .. i r', ti ` , '� T.-- /////�> 61/J / ./'/ ✓ /1 =.*f2r5 ..RR— . I,- } ' \ --�'�—`1 \ f -•f ---‘"-,.."11` :;�`q`��_� • .. a 267000 268000 269000 270000 Class 1 files search for the proposed Easy Dry Holow Loop Phase 1 pipeline route in Garfield County for EnCana Oil and Gas (USA). The proposed route is indicated. [GRI #2824, 4/17/08] 2 0 — 0 0 1) 0 0 0 0 0 0 O 0 M April 23, 2008 Renata Busch Encana Oil & Gas (USA) Inc. 2717 CR 215, Suite 100 Parachute, CO 81635 BUILDING & PLANNING DEPARTMENT RE: Encana East Dry Hollow Loop Phase 1 Pipeline Dear Renata, Thank you for the supplemental information requested regarding the archeological and paleontological study for the East Dry Hollow Loop Phase I Pipeline. As a result of our review, Staff found the Application to be technically complete. As such, the application will need to be sent to referral agencies. Please deliver 8 copies of the revised application to this office so that we can meet the required timelines for referral agencies. Once substantively reviewed, the Planning Director shall provide a letter approving or conditionally approving the development plan to the applicant no later than 28 days after the date on which the application was deemed technically complete which would be no later than May 21, 2008. Finally, once a decision has been made, it is referred to the Board of County Commissioners in order that they have an opportunity to "call up" the application. This requires a 14 day time frame for their decision. If approved without a call up, I expect to tender a permit to you no later than June 4, 2008. Do not hesitate to contact me in the event you have any questions. Very truly yours, . Jarman, Director, Building and Planning Department 970.945.8212 108 Eighth Street, Suite 401 • Glenwood Springs, CO 81601 (970) 945-8212 • (970) 285-7972 • Fax: (970) 384-3470 April 10, 2008 Brenda Linster Herndon Encana Oil & Gas (USA) Inc. 2717 CR 215, Suite 100 Parachute, CO 81635 BUILDING & PLANNING DEPARTMENT RE: Encana East Dry Hollow Loop Phase 1 Pipeline Dear Brenda, This office is in receipt of the Administrative Pipeline Permit Application for the "East Dry Hollow Loop Phase I Pipeline" for Encana. Staff has determined the application to be deemed technically incomplete and requests additional information in order to continue with the review of this application. Please address the following points below: 1) Section 9.07.04(10) of the Zoning Resolution of 1978, as amended requires that all applications contain a "Sensitive Area Survey" that addresses the types and areas of concern along the pipeline right-of-way, such as: sensitive plant populations, cultural, archeological, paleontological resources and wetlands identified during pre - construction environmental surveys, if applicable. The submittal includes a wildlife .noxious weed analysis performed by Westwater Engineering; however there ,; o`information regarding cultural, archeological, or paleontological resources along the proposed corridor. Please provide a study conducted by a qualified professional that addresses these areas of concern. As soon as I receive that information from you, I will proceed with the review of the Application. Do not hesitate to contact this office in the event you have any questions. Very truly yours, Fred A. Jarman, AICP Building and Planning Department, Director 970.945.8212 108 Eighth Street, Suite 401 • Glenwood Springs, CO 81601 (970) 945-8212 • (970) 285-7972 • Fax: (970) 384-3470 C.7-1 00 0 w m)24 m § \ S en\ 0 - :1602 007'! E 0: .11 b tH 832:Insvaal urvno3 GialANdo / w L \ k 13BWf1N )#33H3 ■ ) 0 0 0 AIIOV)(3 ) Vd CO C) (4 8