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Home My WebLink About1.0 ApplicationGarfield County Development Plan Phase II of the CoP Pipeline Project February 2008 GARFIELD COUNTY Building & Planning Department 108 81h Street, Suite 401 Glenwood Springs, Colorado 81601 Telephone: 970 .945.8212 Facsimile : 970 .384.3470 www.garfield-county.com FEB 1 5 2008 C:'\ rv DUil ,, ... ' L \I\ 1NG Pipeline Development Plan Permit GENERAL INFORMATION ~ General Location of the Pipeline (Right-of-Way): Township 4 south , Range 96 wes t - Township 5 South, Range 96 West -Township 4 South, Range 97 West ~ Diameter and Distance the pipeline: 15. 9 mi. up to 20 " dia. gas and up to 6" dia. produced water, 18.3 mi. up to 12" 3-phase unprocessed gas a n d 25.8 mi. up to 1 2 " water supply pipeline ~ Existing Use & Size of Property in acres: Rangeland and 179. 6 acres ~ Description of Proposed Pipeline : Gathering pipeline system and water supply pipelines for proposed 3rd party wells »-Zone District(s): Resource Lands . EnCana Oil & Gas (USA), Inc. ~ Name of Owner of Right-of-Way: _________________ _ ~ Address: 2717 County Road 215, Suite 100 Telephone : _9_7_0 _-2_0_5 _-2_6_5_6 __ _ ~ City: ___ P_ar_a_c_hu_t_e ____ State: _c_o __ 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 USE ONLY o+.D ~{'!'('\ i ~ Doc. No.: f'..VCQ\k)V Date Submitted : ____ TC Date : ______ _ ~ Planner: ___________ Hearing Date: ___________ _ I. APPLICATION SUBMITIAL 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 Submission: 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) A vicinity map indicating the section, township, and range of the site, and its relation to surrounding public roads and municipal boundaries. (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. (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 included in the development area. ( 4) Evidence of surface owner notification and of surface agreements where the surface owner is not a party to the mineral lease. (5) Need for Proposed Action: a statement of the reason for the pipeline (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. (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 (8) Project Facilities: Identify any permanent project facilities such as permanent right-of-way, widths, meter stations, valve sets, etc. Also indicate any temporary right-of-way, width during construction, construction facilities, etc. (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. (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. (11) Land Grant/Permits/Authorizations and Stipulations: attach a copy of any land grant, permits, and authorizations including stipulations. (12) Revegetation Plan: 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 area (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 releas\) of the security. (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. (14) Emergency Response Plan: include a fire protection and hazardous materials spills plan, which specifies planned actions for possible emergency events, a listing of persons 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 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. (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 road. (16) Staging Areas: indicate the general location of the staging areas required for pipeline construction. (17) Hydrotest Water: indicate the quantity of water required, source of water and the disposition of the water after testing. II. Referral and Review by 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 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. (3) 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. Ill. 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 motor or engine; (ii) screening of the site or noise emitting equipment by fence or landscaping; (iii) a noise management plan specifying the hours of maximum noise and the type, frequency, and level of noise to be emitted; and (iv) any other noise mitigation measures required by the OGCC. 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. 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, noncontrasting, nonreflective color, to blend with the adjacent landscape. Right-of-way shall be located in existing disturbed areas unless safety or visual concerns or other adverse surface impacts clearly dictate otherwise. (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 owner's 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 Sewage 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 postdisturbance 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 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. (3) 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 9.07.08 and 9.07.09 of the Pipeline 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. J?v,:t:_ /}t '---- (Signature of applicanUowner) Last Revised: 2/2006 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 reqllired, 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 Countv Treasurer. Applications will not be accepted without the reqllired 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 adclitional 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 Roads & Rights-of-Way Sketch Plan Preliminary Plan Final Plat Amended Plat Exemption from the Definition of Subdivision (SB-3 5) 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 Tell.1 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 BASE FEE $400 $325 $67 5 + 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 -l~ 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 applicatioIL 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 applicatioIL 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. GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT AGREEMENT FOR PAYMENT FORM (Shall be submitted with application) GARFIELD COUNTY (hereinafter COUNTY) and E "( "" ,, 8' I <lr ht, 1 lVl'>A) TAL. (hereinafter APPLICANT) agree as follows: 1. APPLICANT has submitted to COUNTY an application for _Y~_; ~o c~\_·,_.,_,_ _______ _ D1 u<-1" ""'"' \: 3'\ ~" (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 land 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 APPLICA.NT. APPLICANT agrees to make additional payments upon notification by 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: 2./ 1s=1 z..o" i I i Print Name Mailing Address: ,:.7 I I ( IL '-I c;- ' ~~,; -c 0 10/2004 i /• ) 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 I. (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. Project Overview EnCana Oil & Gas (USA) Inc. (EnCana) has entered into a third party Farm-out agreement with the ConocoPhillips Company (CoP) to develop gas reserves on EnCana's North Parachute Ranch (NPR), Double Willow and Story Gulch lease units. The agreement involves CoP developing the road infrastructure and well drilling and EnCana will be constructing the gathering system and metering facilities. Future drilling operations are being proposed at 18 new locations on the NPR, Double Willow and Story Gulch lease units. Phase II of the CoP Pipeline Project involves the construction, operation, and maintenance of 19 well connect pipelines; that will include one up to 12- inch diameter, three phase pipeline and one up to 12-inch diameter, water supply pipeline installed within the same trench line along the 19 individual routes. Phase II of the CoP Pipeline Project will also involve the construction, operation, and maintenance of eight up to 20-inch diameter, natural gas trunk pipelines, eight up to 6-inch diameter, produced water pipelines, and eight up to 12-inch water supply pipelines constructed along eight individual pipeline routes, and 11 new Central Delivery Point (CDP) metering and separation facilities at I 0 locations. The eight trunk pipeline routes will have one up to 20-inch diameter, natural gas pipeline, one up to 6-inch produced water pipeline, and one up to 12-inch water supply pipeline installed within the same trench line along each individual pipeline route. The pipelines and related above-ground facilities will be entirely located in Garfield County, Colorado. The gathering system for the NPR will consist of a three-phase gathering process. The three-phase gathering process will involve collecting the unprocessed natural gas at the well heads and transporting the unprocessed natural gas to a CDP facility. The CDP's will be located at a site lower in elevation from proposed well pads to allow gravity to efficiently transport the unprocessed natural gas from the well pads to the CDP facilities. I The CoP Pipeline Project will gather unprocessed natural gas from the well pad sites and transport the natural gas and produced water through one common pipeline to the proposed CDP facilities. The pipelines leaving the CDP's to the proposed tie-in points will include one natural gas and one produced water pipeline. An additional up to 12-inch diameter water supply pipeline will also be constructed along all of the well connect and trunk pipeline routes to support drilling and completion activities at the well pads. Separation of the natural gas and produced water will occur at the CDP facilities. The CDP facilities will be constructed on a graded pads ranging in size from 100-feet by 125- feet to 150-feet by 400-feet. The unprocessed natural gas will enter into a vessel at the CDP site and the natural gas will dissipate off the water/condensate mixture and the natural gas will enter into the natural gas skid building, which will be located on the downstream side of the vessel. The water will settle to the bottom of the vessel and the water will be piped into the liquid skid building. The natural gas and liquid skid buildings will be used to meter the natural gas; and at the discharge point of the CDP skid buildings the natural gas will be transported through one pipeline and the produced water/condensate mixture will be transported through a second, separate pipeline. The proposed natural gas and produced water/condensate trunk pipelines leaving the CDP's will connect into existing EnCana pipeline systems for delivery of the natural gas and produced water to the Middle Fork Compressor Station and the Middle Fork Water Storage Recycling Facility located in Section 30, Township 5 South, Range 96 West. The proposed pipelines will consist of approximately 15.9 miles of gas pipelines, approximately 25.8 miles of water supply pipelines, approximately 15.9 miles of produced water pipelines and approximately 18.3 miles of three-phase pipelines. (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. The project maps provided in Attachment 1 indicate property ownership along the right- of-way. No structures or facilities are located within 350 feet of the project. ( 4) Evidence of surface owner notification and of surface agreements where the surface owner is not a party to the mineral lease. The Oldland property is the only fee-owner that is not also a party of the mineral rights. EnCana has existing surface use agreements with Oldland and EnCana has notified the fee-owner about the construction of the proposed pipelines. A copy of the fee-owner notification and surface use agreement is included in Attachment 6. 2 (5) Need for Proposed Action: a statement of the reason for the pipeline. EnCana plans to increase production in the Piceance Basin by approximately 100 to 200 million standard cubic feet per day (MMscfd), each year, for the next several years. Phase II of the CoP Pipeline Project will provide a natural gas gathering system that will transport the projected future volumes of natural gas from the NPR, Double Willow and Story Gulch lease units to major interconnections with other interstate pipelines. The proposed pipelines will transport approximately 50 MMscfd of natural gas from the Piceance Basin of western Colorado to existing inter-and intrastate pipelines. (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. The following table lists permits required to construct the project: Required Permits-Pipelines Agency Permit or Consultation Annlicabilitv Federal Department of Interior Bureau of Land Management BLM 299 Right-of-Way Installation of pipelines within Grant a federal unit on BLM administered lands. Army Corps of Engineers Colorado/Gunnison Basin Regulatory Office Nationwide General Construction within waters of Permit# 12 the United States. State of Colorado Department of Public Health and Environment Water Quality Control Division Construction Storm water Discharge of stormwater from Permit a construction site. Local-Colorado Garfield County Development Plan Installation of pipelines; individual lines greater than 12-inch diameter and 2 miles in length or any diameter 5 miles in length. 3 A copy of the BLM 299 application is provided in Attachment 2 and a copy of the Construction Stormwater Permit is included 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. ro1ec ar 1c1van s P . tP f. t Name Title Address I Telephone/Cell EnCana Mike Construction 2717 CR 215, Suite (970) 285-2666 100, Parachute, CO Herndon Coordinator 81635 office Jason 2717 CR 215, Suite (970) 285-2656 Eckman Permit Coordinator 100, Parachute, CO office 81635 (970) 361-2555 cell 2717 CR 215, Suite Rex Allen Construction Tech 100, Parachute, CO (970) 574-8532 cell 81635 Agency Contacts Bureau of Land Management -White River Field Office Penny Brown Realty Specialist 73544 Hwy 64 (970) 878-3800 Meeker, CO 81641 office Army Corps of Engineers -Colorado/Gunnison Basin Regulatory Office Environmental 402 Rood Ave, (970) 243-1199 Susan Nall Room 142 Engineer Grand Jct., CO 81501 office CDPHE WCQD -Stormwater Nathan Environmental 4300 Cherry Creek (303) 692-3555 Moore Engineer South, Denver, CO office 80202 Garfield Coun v Plannin2 Department I 08 8'" Street, Suite (970) 945-8212 Fred Jarman Director 401 Glenwood Springs, CO 81601 office (8) Project Facilities: Identify any permanent project facilities such as permanent right-of-ways, widths, meter stations, valve sets, etc. The construction right-of-way will normally consist of 55 feet of work area for the construction of the well connect pipelines and after the completion of the project the right-of-way will revert back to a 30 foot permanent easement for operation of the 4 pipeline. The trunk pipelines will require a right-of-way of 70-feet in width, and a right- of-way width of 70-feet will also be used on the BLM parcels. The proposed pipelines will mostly be constructed at the edge of the adjacent road right- of-ways or existing pipeline corridors. The off-set will vary depending on the number of existing pipelines within the corridor, terrain and/or environmental features. In some areas however the right of way will be constructed through undisturbed land. Aboveground facilities include vessels, block valves, side block valves, launcher/receivers, cathodic protection devices, and CDP buildings. After completion of reclamation activities, aboveground pipeline markers will be installed over the center of the pipeline. (9) Construction Schedule: indicate the estimated start and end dates for construction, days of the week in which construction will occur, honrs of day during which construction will occur. Construction activities are tentatively scheduled for April 2008 and will continue through the summer of 2009 as drilling operations continue. Working hours will normally range from 7:00 a.m. to 5:00 p.m. Monday through Saturday. Construction activities will take approximately 50 to 65 weeks and will begin upon approval from the Garfield County Planning Director. The duration of construction may vary depending on drilling operations. (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 NPR from 2004 to the present. The Phase II of ConocoPhillips Gathering Pipeline Project was surveyed for sensitive resources during the fall of 2007. The Sensitive Resource Report for the Phase II of ConocoPhillips Gathering Pipeline Project is provided in Attachment 7. The following areas of potential environmental impact were identified while the biological surveys were completed: • Identified active and inactive raptor nest locations, establishment of buffers around the active raptor nest, and recommended avoidance timeframes. • Mapped active and inactive Greater sage-grouse leks, nesting habitat, and overall sage grouse range. Avoidance and buffers were established around the active leks and adjacent nesting habitat. • Completed surveys for federally listed threatened and endangered plants and BLM sensitive species plants along the project right-of-way. 5 WestWater identified one sens1tive plant species, the Piceance Bladderpod, where expected due to soil conditions, slope and exposure. These populations were along the north slope of the West Fork of Parachute Creek. The proposed pipeline project will not impact these plants because the pipeline route will be on the opposite side of the creek. (11) Land Grant/Permits/Authorizations and Stipulations: attach a copy of any land grants, permits, and authorizations including stipulations. A copy of the BLM 299 Application is provided in Attachment 2. (12) Revegetation Plan: 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. Seeding and reclamation activities will begin after final clean-up activities have been completed on each pipeline. Disturbed areas will be reseeded with the NPR Upper Zone Seed Mix; unless the BLM Authorized Officer, fee landowner, or Garfield County requests other seed mixtures. EnCana will only use seed that is certified weed-free. Seed bag tags will be collected and submitted to the BLM within 30 days of seeding. Seeding rate will be listed as pounds per acre of pure live seed (PLS). R ecommen e ee IX or JDner d d S dM' f U z one o· t b IS ur ances Species (Common) Species (Scientific) Seeding Rate (PLS*/Ac) Grasses Slender Wheatgrass Elymus trachvcaulus 3.0 lbs. Mountain Brome Bromus marginatus 2.0 lbs. Nodding Brome Bromus anomalus 2.0 lbs. Idaho F escue Festuca idahoensis 1.0 lbs. 6 Species (Common) Species (Scientific) Seedin2 Rate (PLS *I Ac) Forbs Rocky Mtn. Pestemon Penstemon strictus 1.0 lbs. Cicer Milkvetch Astra£a/us cicer 0.9 lbs. Utah Sweetvetch Hedysarum borea/e 1.3 lbs. Western Yarrow Achil/ea millefolium 0.5 lbs. American Vetch Vicia americana 1.3 lbs. Shrubs Mountain Big Sagebrush Artemisia tridentata 0.25 lbs. *Pure Live Seed Total 13.25 lbs/pls/ac The right-of-way will be scarified, tilled, harrowed, or roughened to a depth of 3 to 4 inches prior to seeding, where needed, to prepare the seedbed and improve revegetation potential. Seed will be placed in direct contact with the soil at an average depth of 0.5- inches, covered with soil, and firmed to eliminate air pockets around the seeds. Seed will be applied using a rangeland seed drill with a seed release and agitation mechanism sufficient to allow seeds of various sizes and densities to be planted at the proper seeding depth. Broadcast seeding will be employed only in areas where drill seeding is unsafe or physically impossible. Broadcast application rates will be double the drill rate. Immediately after broadcasting, the seed will be uniformly raked, chained, or dragged to incorporate seed to a sufficient seeding depth. Upon completion of seeding activities timber slash and larger shrubs that were previously cleared from the work area will be scattered along the reclaimed right-of-way to aid in soil stabilization and to minimize OHV traffic. The NPR Reclamation Plan is provided in Attachment 8. The NPR Reclamation Plan describes in greater detail the restoration guide for disturbed lands on the NPR from the result of constructing well pads, roads, and pipelines. EnCana will provide a revegetation security to Garfield County for the amount of $306,000 or $2,500 per acre of disturbance for the Phase II of the CoP Pipeline Project. The security deposit certificate is provided in Attachment 9. (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. Noxious weed surveys were completed by WestWater for Phase II of the Conoco/Phillips Gathering Pipeline Project. Several populations isolated populations of houndstongue (Cynoglossum ofjicinale), Canada thistle (Cirsium arvense), Musk thistle (Carduus nutans), Bull thistle (Cirsium vulgare) and spotted knapweed (Centaurea macu/osa) were identified within the general area of the West Fork of Parachute Creek riparian zone and to a lesser extent its tributaries. The East Fok of Stewart Creek had isolated populations of houndstongue (Cynoglossum ofjicinale), Canada thistle (Cirsium arvense), Musk 7 thistle (Carduus nutans), Bull thistle (Cirsium vulgare) and spotted knapweed (Centaurea maculosa). The unnamed tributary of Davis Gulch, near the K35 496 CDP had isolated populations of houndstongue ( Cynoglossum ofjicinale ). Most of these drainages also had isolated locals of common mullein (Verbascum thapsis). Common mullein is not a listed noxious weed in Garfield County but is listed in nearby Rio Blanco County. The following measures identify how EnCana will use Best Management Practices to 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. Cleaning will be completed using either high-pressure water or compressed air to remove potential weed seeds. • 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. • Temporary disturbances will be kept to a minimum. • Establish native grasses and forbs. The NPR Reclamation Plan included in Attachment 8 has identified 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. The Weed Management Plan is provided in Attachment 10. (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 an 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 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 11. The following table lists contact information for Emergency Services Personnel: Emergency Phone Numbers Utility Notification Center of CO (800) 922-1987 Garfield County Sheriff (970) 625-8095 Parachute Fire Department 911 or (970) 285-7711 Parachute Police Department 911 or (970) 285-7630 8 (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. EnCana will use existing private and BLM access roads to gain access to the right-of-way during construction. These access roads are primarily gravel and/or dirt roads utilized by the oil and gas industry. No county roads will be used in Garfield County for construction of the project. (16) Staging Areas: indicate the general location of the staging areas required for pipeline construction. EnCana is proposing to construct a 3.3 acre construction/contractor yard. It is located on EnCana property along the Middle Fork of Parachute Creek. This yard will be used to store equipment and various construction items that will be used for Phase II of the CoP Pipeline Project. This contractor yard was added into the project after all other areas had been surveyed for wildlife and sensitive resources. Due to heavy snow, WestWater could not perform these surveys prior to submittal of this Pipeline Development Plan. This location will be surveyed in the spring when weather conditions allow. 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. (17) Hydrotest Water: indicate the quantity of water required, source of water and the disposition of the water after testing. The Phase II of the CoP Pipeline and CDP discharge pipelines will be pneumatically tested with natural gas prior to being placed into service. 9 EnCana Oil & Gas (USA) Inc. Phase II of the Conoco/Phillips Gathering Pipeline Project Garfield County Pipeline Development Plan February 2008 Applicant: EnCana Oil & Gas (USA) Inc. 2717 Garfield 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 ...................................................................................................... 2 1.3 Location ...................................................................................................................... 2 1.3.1 Well Connects ......................................................................................................... 2 1.3.2 Trunk Pipelines ....................................................................................................... .4 1.3.3 Central Delivery Point Facilities ............................................................................... 5 1.4 Facilities ...................................................................................................................... 5 1.4.1 Project Design ......................................................................................................... 5 1.5 Land Requirements ..................................................................................................... 6 1.5.1 Right-of-Way ........................................................................................................... 6 1.5.2 Corridor ................................................................................................................... 6 1.5.3 Disturbance ............................................................................................................. 6 1.5.4 Contractor/Pipe Storage/Offloading Yards ............................................................... 7 1.5.5 Access Roads ......................................................................................................... 7 1.5.6 Aboveground Appurtenances .................................................................................. 7 2.0 Development Plan Requirements .................................................................................... 7 2.1 Attachments ................................................................................................................ 7 2.1.1 Attachments ............................................................................................................ 7 2.2 Construction Schedule ................................................................................................ 8 2.3 Construction Methods .................................................................................................. 8 2.3.1 Plan of Development ............................................................................................... 8 2.3.2 Construction Sequence ........................................................................................... 8 2.3.2.1 Engineering Surveys .................................................................................... 8 2.3.2.2 Clearing, Grading, and Topsoiling ................................................................ 8 2.3.2.3 Trenching ..................................................................................................... 9 2.3.2.4 Pipe lnstallation ............................................................................................ 9 2.3.2.5 Backfilling ................................................................................................... 1 O 2.3.2.6 Cleanup ..................................................................................................... 10 2.3.3 Road Crossings/Installation ................................................................................... 10 2.3.4 Drainage and Stream Crossings/Installation .......................................................... 11 2.4 Required Permits ....................................................................................................... 12 2.5 Ownership and Fee-Landowner Documentation ........................................................ 13 2.5.1 Ownership ............................................................................................................. 13 2.5.2 Agreements ........................................................................................................... 13 2.5.3 Notifications ........................................................................................................... 13 2.5.4 Buildings ................................................................................................................ 13 2.6 Project Participants ................................................................................................... 13 2.7 Sensitive Area Surveys ............................................................................................. 14 2. 8 Revegetation ............................................................................................................. 15 2.9 Weed Management Plan ........................................................................................... 16 2.1 O Emergency Response ............................................................................................... 16 2.11 Traffic Impact ............................................................................................................ 17 2.12 Staging Areas/Construction Yards ............................................................................. 17 2.13 Hydrotest Water ........................................................................................................ 17 3.0 Post-Construction Activities ........................................................................................... 17 3.1 Maintenance and Operation ...................................................................................... 17 4.0 Mitigation Measures ...................................................................................................... 18 4.1 Noxious Weeds ......................................................................................................... 18 4.2 Erosion and Stormwater ............................................................................................ 19 4.3 Threatened, Endangered, and Sensitive species ....................................................... 19 4.4 Cultural Resources .................................................................................................... 20 4.5 Air Quality .................................................................................................................. 20 4.6 Solid Waste Management ......................................................................................... 20 4. 7 Hazardous Materials Management ............................................................................ 20 1.0 INTRODUCTION 1.1 PROJECT DESCRIPTION EnCana Oil & Gas (USA) Inc. (EnCana) has entered into a third party Farm-out agreement with the ConocoPhillips Company (CoP) to develop gas reserves on EnCana's North Parachute Ranch (NPR), Double Willow and Story Gulch lease units. The agreement involves CoP developing the road infrastructure and well drilling and EnCana will be constructing the gathering system and metering facilities. Future drilling operations are being proposed at 18 new locations on the NPR, Double Willow and Story Gulch lease units. Phase II of the CoP Pipeline Project involves the construction, operation, and maintenance of 19 well connect pipelines; that will include one up to 12-inch diameter, three phase (unprocessed natural gas) pipeline and one up to 12-inch diameter, water supply pipeline installed within the same trench line along the 19 individual routes. Phase II of the CoP Pipeline Project will also involve the construction, operation, and maintenance of eight up to 20-inch diameter, natural gas trunk pipelines, eight up to 6-inch diameter, produced water pipelines, and eight up to 12-inch water supply pipelines constructed along eight individual pipeline routes, and 11 new Central Delivery Point (CDP) metering and separation facilities at 10 locations. The eight trunk pipeline routes will have one up to 20-inch diameter, natural gas pipeline, one up to 6-inch produced water pipeline, and one up to 12-inch water supply pipeline installed within the same trench line along each individual pipeline route. The pipelines and related above-ground facilities will be entirely located in Garfield County, Colorado. A project area map is included in Attachment 1. The gathering system for the NPR will consist of a three-phase gathering process. The three- phase gathering process will involve collecting the unprocessed natural gas at the well heads and transporting the unprocessed natural gas to a CDP facility. The CDP's will be located at a site lower in elevation from the proposed well pads to allow gravity to efficiently transport the unprocessed natural gas from the well pads to the CDP facilities. The CoP Pipeline Project will gather unprocessed natural gas from the well pad sites and transport the natural gas and produced water through one common pipeline to the proposed CDP facilities. The pipelines leaving the CDP's to the proposed tie-in points will include one natural gas and one produced water pipeline. An additional up to 12-inch diameter water supply pipeline will also be constructed along all of the well connect and trunk pipeline routes to support drilling and completion activities at the well pads. Separation of the natural gas and produced water will occur at the CDP facilities. The CDP facilities will be constructed on a graded pads ranging in size from 100-feet by 125-feet to 150- feet by 400-feet. The unprocessed natural gas will enter into a vessel at the CDP site and the natural gas will dissipate off the water/condensate mixture and the natural gas will enter into the natural gas skid building, which will be located on the downstream side of the vessel. The water will settle to the bottom of the vessel and the water will be piped into the liquid skid building. The natural gas and liquid skid buildings will be used to meter the natural gas; and at the discharge point of the CDP skid buildings the natural gas will be transported through one pipeline and the produced water/condensate mixture will be transported through a second, separate pipeline. The proposed natural gas and produced water/condensate trunk pipelines leaving the CD P's will connect into existing EnCana pipeline systems for delivery of the natural gas and produced water to the Middle Fork Compressor Station and the Middle Fork Water Storage Recycling Facility located in Section 30, Township 5 South, Range 96 West. The proposed pipelines will consist of approximately 15. 9 miles of gas pipelines, approximately 25.8 miles of water supply pipelines, approximately 15.9 miles of produced water pipelines and approximately 18.3 miles of three-phase pipelines. 1.2 PURPOSE AND NEED EnCana plans to increase production in the Piceance Basin by approximately 100 to 200 million standard cubic feet per day (MMscfd), each year, for the next several years. Phase II of the CoP Pipeline Project will provide a natural gas gathering system that will transport the projected future volumes of natural gas from the NPR, Double Willow and Story Gulch lease units to major interconnections with other interstate pipelines. The proposed pipelines will transport approximately 50 MMscfd of natural gas from the Piceance Basin of western Colorado to existing inter-and intrastate pipelines. 1.3 LOCATION 1.3.1 Well Connects There is a total of 19 new well connects that will be constructed for Phase II of the CoP Pipeline Project; which are the 018 596, Kl7 596, Bl6 (1) 596, Bl6 (2) 596, G21 596, H04 596, E06 596, N07 596, G35 496, L22 496, E34 496, M33 496, L27 496, M34 496, M21 496, C30 496, C29 496, G32 496 and the M32 496. The well connects will generally be up to 12-diameter, steel pipelines and will be constructed within a 55-foot right-of-way. The proposed well connects will consist of approximately 25.8 miles of up to 12-inch diameter, water supply pipeline and approximately 18.3 miles of up to 12-inch diameter, three-phase, steel pipeline. Composite pipe may be used if a smaller diameter pipeline is needed. Individual alignment sheets are provided in Attachment 13 Specifications. The 018 596, Kl7 596, Bl6(1) 596, Bl6(2) 596 and G21 596 well connects will be located on Jackrabbit Ridge and the well connects will transport unprocessed natural gas to the G2 l 596, F09(B) 596, Gl7(A) 596, and the Gl7(B) 596 CDP facilities. The 018 596 well connect will be located in the S Yz SE V. of Section 18, and the SW V., NWSE Y. and SWNE Y. of Section 17, Township 5 South, Range 96 West, 6th P.M and the 018 596 well connect will tie-into the proposed G 17(B) 596 CDP site. The Kl 7 596 well connect will be located in the NESW Y,, of Section 17, Township 5 South, Range 96 West, 6th P.M. The Kl 7 well connect will tie into the 018 596 well connect and both lines will transport natural gas to the Gl7 (B) 596 CDP. The Bl6(1) 596 will be located in the NWNE V. of Section 16, and the E Yz SW V., SWNE Y,,, and the SENW V. of Section 9, Township 5 South, Range 96 West, 6th P.M., and the Bl6(1) 596 well connect will tie-into the F09(B) 596 CDP. The B16(2) 596 will be located in the NWNE V. and the NW t;, of Section 16 and the S Y2 NE V. of Section 17, Township 5 South, Range 96 West, 6th P.M. and will tie-into the Gl7(A) 596 CDP. The G21 596 well connect will be located in the SWNE V. and the SENW V. of Section 21, Township 5 South, Range 96 West, 6th P.M. The G21 596 well connect will tie-into the G21 596 CDP facility. The H04 596, E06 596, and N07 596 well connects will be located in the West Fork of Parachute Creek drainage. The H04 596 well connect will transport natural gas to the F09(B) 596 CDP, and 2 the H04 596 well connect will be located in the SENE V. and the E Y2 SE V. of Section 4 and the NE V. and the SENW 11. of Section 9, Township 5 South, Range 96 West, 6th P.M. A separate water supply pipeline will be constructed to the H04 596 well pad from the existing Divide Ridge Trunk across the SWSW V. of Section 34, Township 4 South, Range 96 West, 6th P.M. and the W Yz, NW V. of Section 3 and the SENE V. of Section 4, Township 5 South, Range 96 West, 6th P.M. The E06 596 well connect will be located in the S Y2 NW V., and the W Y2 SW V. of Section 6 and the W Yz NW V., SENW V. and S Yz NEV. of Section 7, Township 5 South, Range 96 West, 6th P.M. The N07 596 well connect will be located SESW V. and the E Yz SEV. of Section 7 and the NENW V. and NWNE V. of Section 18, Township 5 South, Range 96 West, 6th P.M. The E06 596 and N07 596 well connects will tie-into the 107 596 CDP. The G35 496 well connect will be located in the SWNE V., the NWSE 11. and the NESW V. of Section 35, Township 4 South, Range 96 West, 6th P.M., and the G35 496 will transport natural gas to the K35 496 CDP. The L22 496, M33 496, M34 496, E34 496, and L27 496 well connects will be located in the Dry Fork of Stewart Gulch drainage. The M34 496, E34 496, L27 496, and L22 496 will transport unprocessed natural gas into the K22 496 CDP facility. The L22 496 well connect will be located in the N Yi SW V. of Section 22, Township 4 South, Range 96 West, 6th P.M. The M34 496 well connect will be constructed mostly along the same route as the trunk line from the L22 496 CDP to Divide Ridge Trunk. It is located in the W Yz SW V. and the W Yz NW V. of Section 34, the W Yz SW V. and W Y2 NW V. of Section 27 and the SW V. of Section 22, Township 4 South, Range 96 West, 6th P.M. The E34 496 and L27 496 well connects will tie- into the M34 496 well connect, which will continue to flow to the K22 496 CDP. The E34 496 well connect will be located in the SWNW V. of Section 34, Township 4 South, Range 96 West, 6th P.M. The L27 496 well connect will be located in the NWSW V. of Section 27, Township 4 South, Range 96 West, 6th P.M. The M33 496 well connect will be located SWSW V. of Section 33, Township 4 South, Range 96 West, 6th P.M. and the NWNW V. of Section 4, Township 5 South, Range 96 West, 6'h P.M. The M33 496 well connect will tie into the D04 596 CDP site. The M21 496 well connect will be located in the East Fork of Stewart Gulch drainage. The M21 496 well connect will be located in the SWSW V. of Section 21, Township 4 South, Range 96 West, 6th P.M., and the M21 will tie-into the M21 CDP site located near the well pad. The C30 496 well connect will be located on Porcupine Ridge. The C30 496 well connect will be located in the N Yz NW V. of Section 30, Township 4 South, Range 96 West, 6th P.M., and the C30 496 well connect will tie-into the D30 496 CDP. The M32 496 well connect will tie into the M21 496 CDP. This will be constructed mostly along the same route as the trunk line from the M21 496 CDP to Divide Ridge Trunk. The M32 496 well connect is located in the SW V., SENW V. and W Yz NE V. of Section 32, the SE V. of Section 29, and the SWSW V. of Section 21, Township 4 South, Range 96 West, 6th P.M. The G32 496 well connect will tie into the M32 496 well connect. The G32 496 well connect is in the SWNE V. and SENW 11. of Section 32, Township 4 South, Range 96 West, 6th P.M. 3 The C29 496 is located in Cutoff Gulch and will flow to the N20 496 CDP. It is located in the NENW Y. of Section 29 and the SESW 11. of Section 20, Township 4 South, Range 96 West, 6th P.M. The well connects described above will also have an up to 8-inch diameter water supply pipeline installed within the same trench line as the natural gas pipelines. The water supply pipeline will provide water to complete drilling and completion activities at the well pads. This will eliminate the need for numerous water trucks making multiple trips in and out of the locations to provide water. 1.3.2 Trunk Pipelines A total of eight new trunk pipeline routes will be constructed for the project; this includes the K35 496, K22 496, M21 496, D30 496, 107 596, G21 596, N20 496 and the Divide Ridge trunk pipelines. The trunk pipelines will be up to 20-inch diameter, natural gas and one up to 6-inch produced water pipeline. Both pipelines will be installed within the same trench leaving the CDP facilities; for a total of 16 new trunk pipelines installed within eight new pipelines routes. The trunk pipelines will require a right-of-way of 70-feet in width. The trunk pipelines will involve the construction of approximately 15.9 miles of up to 20-inch diameter, natural gas, steel pipeline and 15.9 miles of up to 6-inch diameter, produced water, steel pipeline. The trunk pipelines described below will also have an up to 12-inch diameter water supply pipeline installed within the same trench line as the natural gas pipelines. The water supply pipeline will provide water to complete drilling and completion activities at the well pads. Individual alignment sheets are provided in Attachment 13 Specifications. The K35 496 trunk pipeline will be located in the SW Y. of Section 35, Township 4 South, Range 96 West, 6th P.M., and in the NWNW V. of Section 2, and in the NENE Y. of Section 3, Township 5 South, Range 96 West, 6th P.M. The K35 496 trunk pipeline will connect into the existing 12-inch Davis Point pipeline in the NE Y. of Section 3, Township 5 South, Range 96 West, 6th P.M. The K22 496 trunk pipeline will be located SW Y. of Section 22, the W \12 NW Y. and the W \12 SW 1!. of Section 27 and the NW Y. and the W \12 SW Y. of Section 34, Township 4 South, Range 96 West, 6th P.M. The K22 trunk pipeline will connect into the existing North Trunk # 1 pipeline. The M21 496 trunk pipeline will be located in the SWSW V. of Section 21, the NW Y. of Section 28, the SENE 1!. and the SE Y. of Section 29, the NE Y. and the SENW V. and the SW Y. of Section 32 and the SESE V. of Section 31, Township 4 South, Range 96 West, 6th P.M. and in the NENE V. of Section 6, Township 5 South, Range 96 West, 6th P.M. The M21 496 trunk pipeline will connect into the proposed Divide Ridge Trunk, which will be located in the NENE Y. of Section 6, Township 5 South, Range 96 West, 6th P.M. The D30 496 trunk pipeline will be located in the W Yi NW V. and the W 1h SW V. of Section 30, Township 4 South, Range 96 West, 6th P.M. and the SENEY. and E \12 SE Y. of Section 25, the E 1h NE Y. of Section 36, Township 4 South, Range 97 West, 6th P.M. and the NWSW Y. of Section 31, Township 4 South, Range 96 West, 6th P.M. The D30 496 trunk pipeline will connect into the proposed Divide Ridge trunk pipeline. The 107 596 trunk pipeline will be located in the SENE Y,, of Section 7, the S 1h NW 1!. and the S 1h NEY. of Section 8, Township 5 South, Range 96 West, 6th P.M., and the S \12 NW Y. of Section 9, Township 5 South, Range 96 West, 6th P.M. The 107 596 trunk pipeline will connect into the existing F09(A) 596 CDP facility. The G21 596 trunk 4 pipeline will tie into the G l 7(A) 596 CDP site. It is located in the SWNE Yi and E Y, NW Yi of Section 21, Township 5 South, Range 96 West, 6'h P.M. and in the SESW Yi and WY, SW Yi and SWNW Yi of Section 16 and in the S Y, NE Yi of Section 17, Township 5 South Range 96 West, 61h P.M. The Divide Ridge trunk pipeline will be located in the SW Yi of Section 31, Township 4 South, Range 96 West, 61h P.M., and in the NENW Yi and NE Yi of Section 6, Township 5 South, Range 96 West, 6'h P.M. The Divide Ridge trunk pipeline will connect into the existing North Trunk# 1 in the NW Yi of Section 5, Township 5 South, Range 96 West, 61h P.M. The N20 496 Trunk will tie into the M21 496 to Divide Trunk pipeline in the East Fork of Stewart Creek drainage. The proposed pipeline will begin at the N20 496 CDP site in the SESW Yi of Section 20, Township 4 South, Range 96 West, 6'h P.M. and continue into the E Y, NW Yi and S Y, NE Yi of Section 29, Township 4 South, Range 96 West, 6th P .M. 1.3.3 Central Delivery Point Facilities The project will also involve the construction, operation, and maintenance of 11 new CDP facilities at 10 locations. These CDP's are the Gl7(A) 596, Gl7(B) 596, G21 596, K35 496, K22 496, M21 496, D30 496, N20 496, D04 596 and !07 596. The Gl7(A) 596 and Gl7(B) 596 CDP facilities will be on one larger pad located in the SWNE Yi of Section 17, Township 5 South, Range 96 West, 61h P.M. The G21 596 is located in the SWNE Yi of Section 21, Township 5 South, Range 96 West, 61h P.M. The K35 496 CDP will be located in the NESW Yi of Section 35, Township 4 South, Range 96 West, 6'h P.M. The K22 496 CDP will be located in the NESW 1/. of Section 22, Township 4 South, Range 96 West, 61h P.M. The M21 496 CDP will be located in the SWSW Yi of Section 21, Township 4 South, Range 96 West, 61h P.M. The D30 496 CDP will be located in the NWNW Yi of Section 30, Township 4 South, Range 96 West, 6'h P.M. The N20 496 will be located in the SESW Yi of Section 20, Township 4 South, Range 96 West, 6'h P.M. The !07 596 CDP will be located in the SENE 1/. of Section 7, Township 5 South, Range 96 West, 61h P.M. The D04 596 will be located in the NWNW Yi of Section 4, Township 5 South, Range 96 West, 6th P.M. The F09(B) 596 CDP will be located adjacent to the existing F09 (A) 596 CDP in the NWNE Yi of Section 9, Township 5 South, Range 96 West, 61h P.M. The CDP facilities will be constructed on a graded pad ranging in size from 100-feet by 125-feet to 150-feet by 400-feet. Individual CDP Layout maps are provided in Attachment 1 and a typical mechanical drawing is provided in Attachment 13. 1.4 FACILITIES 1.4.1 Project Design The proposed project is approximately 18.3 miles of up to 12-inch diameter, buried, three-phase, steel pipeline, approximately 15.9 miles of up to 20-inch diameter, buried, natural gas, steel pipeline, approximately 15.9 miles of up to 6-inch diameter, buried, produced water, steel pipeline and approximately 25.8 miles of up to 12-inch diameter, buried, water supply, steel pipeline, and aboveground facilities. Aboveground facilities include multiple block valves, side block valves, launcher/receivers, and cathodic protection devices installed along the right-of-way as necessary. EnCana will design and the construct the pipelines 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", and Part 195, Transportation of Hazardous Material by Pipeline". 5 1.5 LAND REQUIREMENTS 1.5.1 Right-of-Way The construction right-of-way will normally consist of 55 feet of work area for the construction of the well connect pipelines and after the completion of the project the right-of-way will revert back to a 30 foot permanent easement for operation of the pipeline. The trunk pipelines will require a right-of-way of70-feet in width. Approximately 179.6 acres will be impacted for Phase II of the CoP Pipeline Project; of which 44.3 acres will be disturbed on BLM administrated lands, 41 acres will be disturbed on fee lands, and 94.3 acres will be disturbed on EnCana property. The proposed pipelines will mostly be constructed at the edge of the adjacent road right-of-way. The off-set will vary depending on the number of existing pipelines within the corridor, terrain and/or environmental features. In some areas however the right of way will be constructed through undisturbed land. The 10 proposed CDP locations will each require a graded pad of various sizes depending on topography and the number of wells that will be feeding the CDP. Pad sizes will vary and will encompass 0.4 acres to 2.2 acres, for a total of 12.1 acres. Six of the proposed CDP locations are on EnCana property totaling 6.8 acres; two are on fee land totaling 2.3 acres and two locations are proposed on BLM lands totaling 3 acres. Garfield County grading permits will be attained ~ after the Pipeline Development Plan is approved. 1.5.2 Corridor EnCana has selected routes that will primarily parallel existing road right-of-ways, two-track roads, or existing utility corridors. In areas where no access roads have been constructed CoP/EnCana will construct new access roads into the future drill pad locations and the trunk pipelines will also parallel the new access road. EnCana will route the pipeline to avoid areas of potential visual impact in cross-country sections of the pipeline right-of-way. 1.5.3 Disturbance Phase II of the CoP Pipeline Project will disturb approximately 179.6 acres in Garfield County. Pipeline Land Requirements in Garfield Countv Landowner Total Construction Disturbance (acres) BLM 44.3 Oldland 41 EnCana 94.3 Total 179.6 6 1.5.4 Contractor/Pipe Storage/Offloading Yards EnCana's contractor will use an undisturbed parcel near existing well pads as a contractor yard to store equipment and construction materials. The proposed contractor yard is located on EnCana owned property near the confluence of the Middle Fork of Parachute Creek and the East Middle Fork of Parachute Creek. The contractor yard will be located in the NWNW Y. of Section 19, Township 5 South, Range 95 West, 61h P.M. An individual location map is provided in Attachment 1. 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 Access Roads EnCana will use existing access roads to gain access to right-of-way during construction. These access roads are primarily gravel and/or dirt roads utilized by the oil and gas industry. 1.5.6 Aboveground Appurtenances Aboveground facilities include vessels, block valves, side block valves, launcher/receivers, cathodic protection devices, and CDP buildings. After completion of reclamation activities, aboveground pipeline markers will be installed over the center of each pipeline. 2.0 DEVELOPMENT PLAN REQUIREMENTS 2.1 ATTACHMENTS 2.1.1 Attachments This Development Plan includes the following attachments: Attachment 1 -Maps Attachment 2 -BLM 299 Right-of-Way Application Attachment 3 -Stormwater Management Plan Attachment 4 -Line List Attachment 5 -NPR Deed Attachment 6-Fee-owner Notification and Surface Use Agreement Attachment 7 -Sensitive Area Survey Attachment 8 -NPR Reclamation Plan Attachment 9 -Revegetation Security Certificate Attachment 10 -Weed Management Plan Attachment 11 -Emergency Response Plan Attachment 12 -Spill Prevention Containment and Countermeasure Plan Attachment 13 -Specifications 7 2.2 CONSTRUCTION SCHEDULE Construction activities are tentatively scheduled for April 2008 and will continue into the summer of 2009 as drilling operations continue. Working hours will normally range from 7:00 AM to 5:00 PM Monday through Saturday. Construction activities will take approximately 50 to 65 weeks and will begin upon approval from the Garfield County Planning Director. The duration of construction may vary depending on drilling operations. 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 measures that were identified in the Sensitive Resource Survey, Weed Management Plan, NPR Reclamation Plan, and Environmental Assessment. 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 in a construction spread. 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. Clearing will be performed only to the extent necessary to allow for construction activities. Every effort will be made to salvage root systems. The majority of the current vegetation along the proposed right-of-way consists of oakbrush-sagebrush-grassland species. EnCana's contractors will use a mower to cut and mulch the existing vegetation to ground level. Every effort will be made to salvage root systems. Along sections of the right-of- way where oakbrush or other larger trees are present the larger vegetation will be hand-cut and stacked along the edge of work area for later use in reclamation activities. Available topsoil, up to a depth of six inches on BLM lands and EnCana's NPR, will be segregated from the trenchline only. On any lands requiring grading, topsoil will be stripped from the entire portion of the right-of-way that requires grading. 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. At the fee-landowners request, up to 10 inches of 8 topsoil may be segregated from the trench and spoil sides of the right-of-way and the entire portion of the right-of-way may be stripped of available topsoil if grading is required. 2.3.2.3 Trenching The ditch will be excavated and sloped in accordance with OSHA specifications. Typical trench profiles are included in Attachment 13 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 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 AP! 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 9 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 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 mirco-climates for plant development and collection of stormwater runoff. All existing improvements, such as fences, gates, irrigation ditches, and cattle guards, will be maintained and repaired to as good as or better than pre-construction conditions and to the satisfaction of the BLM Authorized Officer and/or fee-landowner. OHV barriers may be required by the BLM and suitable sites will be determined in conjunction with the BLM Authorized Officer. 2.3.3 Road Crossings/Installation The proposed pipeline will not cross any Garfield County or BLM roads along the project route. The project will be installed across numerous two track roads and industrial roads on the NPR and fee land. The pipeline will be buried at least 60-inches underneath the road surface to ensure proper protection of the pipeline. IO 2.3.4 Drainage and Stream Crossings/Installation Phase II of the CoP pipeline project will involve crossing several intermittent drainages along the proposed routes. The drainage crossings are expected to be dry at the time of construction, but if the stream channel has water flow, dry-trench crossing methods will be utilized. EnCana has hired Cordilleran Compliance Services to conduct preconstruction documentation of all drainage crossings that will be affected by the proposed project to comply with the ACOE requirements. They will also conduct post construction documentation once construction and reclamation is completed. The proposed pipeline route from the D30 496 CDP to the Divide Trunk will cross Porcupine Gulch in the NWNW Y. of Section 30, Township 4 South, Range 96 West, 6'h P.M. The proposed E06 596 to 107 596 CDP pipeline crosses two intermittent tributaries to the West Fork of Parachute Creek as well as one crossing of the West Fork of Parachute Creek in the SWNE Y. of Section 7, Township 5 South, Range 96 West, 61h P.M. This creek crossing will be directionally drilled and the creek and associated riparian areas will not be impacted. The N07 596 well connect will have two crossings of an unnamed intermittent tributary to the West Fork of Parachute Creek in the NWNE Y. of Section 18 and the SWSW Y. of Section 7, Township 5 South, Range 96 West, 61h P.M. The 107 596 CDP to F09 596 CDP pipeline crosses four unnamed intermittent tributaries of the West Fork of Parachute Creek. There will be an access road constructed across an unnamed intermittent draina~e to the 107 596 CDP site in the SWNW Y. of Section 8, Township 5 South, Range 96 West, 61 P.M. This road will be in the disturbed pipeline right-of-way and will be used for the life of the CDP. The M32 496 well connect crosses the East Fork of Stewart Creek in the SWSW Y. of Section 32, Township 4 South, Range 96 West, 61h P.M. The G32 well connect also crosses the East Fork of Stewart Creek in the SENW Y. of Section 32, Township 4 South, Range 96 West, 61h P.M. The route from the M34 496 to the K22 496 CDP will cross the Dry Fork of Stewart Creek in the NWSW Y. of Section 27, Township 4 South, Range 96 West, 61h P.M. From the N20 496 CDP to the M2 l 496 Trunk, the pipeline will cross Cutoff Gulch in the NENW Y. of Section 29, Township 4 South, Range 96 West, 61h P.M. The discharge line for the K35 496 CDP site crosses a tributary to Davis Gulch in the NWSW Y. of Section 35, Township 4 South, Range 96 West, 61h P.M. The H04 596 well connect crosses the West Fork of Parachute Creek in the SWNE Y. of Section 9, Township 5 South, Range 96 West, 6111 P.M. The crossing will be installed using the dry- trench method. II The Bl6 596 well connect crosses an unnamed intermittent tributary to the West Fork of Parachute Creek in the SESW Yi of Section 9, Township 5 South, Range 96 West, 61h P.M. 2.4 REQUIRED PERMITS The following table lists permits required to construct the project: Required Permits-Pipelines Aeency Permit or Consultation Annlicability Federal Department of Interior Bureau of Land Management BLM Right-of-Way Installation of pipelines within Grant a federal unit on BLM administered lands. Army Corps of Engineers Colorado/Gunnison Basin Regulatory Office Nationwide General Construction within waters of Permit# 12 the United States. State of Colorado Department of Public Health and Environment Water Quality Control Division Construction Stormwater Discharge of stormwater from Permit a construction site. Local-Colorado Garfield County Development Plan Installation of pipelines; individual lines greater than 12-inch diameter and 2 miles in length or any diameter 5 miles in length. A copy of the 299 BLM Right-of-Way application is provided in Attachment 2 and a copy of the Construction Stormwater Permit is included in Attachment 3. 12 2.5 OWNERSHIP AND FEE-LANDOWNER DOCUMENTATION 2.5.1 Ownership Approximately 52 percent of the project is located on EnCana property, 25 percent is located on land administered by the Bureau of Land Management White River Field Office, and approximately 23 percent is located on fee-owned land. Landowners and affected acreages are provided below. Contact information for the fee-owner is provided in the Line List in Attachment 4. The NPR Deed is included in Attachment 5. Affected Landowners Owner Total Amount of Percent of Ownership Disturbance BLM 44.3 acres 25 Oldland 41 acres 23 EnCana 94.3 acres 52 Total 179.6 acres 100 2.5.2 Agreements The Oldland property is the only fee-owner that is not also a party of the mineral rights. EnCana has existing surface use agreements with Oldland and EnCana has notified the fee-owner about the construction of the proposed pipeline. A copy of the fee-owner notification and surface use agreement is included in Attachment 6. 2.5.3 Notifications All surface owners within 200 feet of the proposed project are also affected surface owners with existing agreements with EnCana. 2.5.4 Buildings No buildings are located within 350 feet of the proposed project. 2.6 PROJECT PARTICIPANTS Project participants and contact information are provided in the following table. P . tP f. t ro1ec ar 1c1pan s Name Title Address I Telephone/Cell EnCana Construction 2717 CR 215, Suite (970) 285-2666 Mike Herndon Coordinator 100, Parachute, co office 81635 13 Name Title Address I Telephone/Cell EnCana 2717 CR 215, Suite (970) 285-2656 Jason Eckman Permit Coordinator 100, Parachute, co office 81635 (970) 361-2555 cell 2717 CR 215, Suite Rex Allen Construction Tech 100, Parachute, co (970) 574-8532 cell 81635 Agency Contacts Bureau of Land Management -White River Field Office Penny Brown Realty Specialist 73544 Hwy 64 (970) 878-3800 Meeker, CO 81641 office Army Corps of Engineers -Colorado/Gunnison Basin Regulatory Office Environmental 402 Rood Ave, (970) 243-1199 Susan Nall Room 142 Engineer Grand Jct., CO 81501 office CDPHE WCQD -Stormwater Environmental 4300 Cherry Creek (303) 692-3555 Nathan Moore Engineer South, Denver, co office 80202 Garfield County Plannine; Deoartment 108 81n Street, Suite (970) 945-8212 Fred Jarman Director 401 Glenwood Springs, CO 81601 office 2.7 SENSITIVE AREA SURVEYS West Water Engineering Inc. (Westwater) has completed the biological assessments of the NPR from 2004 to the present. The Phase II of ConocoPhillips Gathering Pipeline Project was surveyed for sensitive resources during the fall of 2007. The Sensitive Resource Report for the Phase II of ConocoPhillips Gathering Pipeline Project is provided in Attachment 7. The following areas of potential environmental impact were identified while the biological surveys were completed: • Identified active and inactive raptor nest locations, establishment of buffers around the active raptor nest, and recommended avoidance timeframes. • Mapped active and inactive Greater sage-grouse leks, nesting habitat, and overall sage grouse range. Avoidance and buffers were established around the active leks and adjacent nesting habitat. • Completed surveys for federally listed threatened and endangered plants and BLM sensitive species plants along the project right-of-way. 14 WestWater identified one sensitive plant species, the Piceance Bladderpod, where expected due to soil conditions, slope and exposure. These populations were along the north slope of the West Fork of Parachute Creek. The proposed pipeline project will not impact these plants because the pipeline route will be on the opposite side of the creek. 2.8 REVEGETATION Seeding and reclamation activities will begin after final clean-up activities have been completed on each portion of the project or during the next seeding window in the spring or fall of 2008. Disturbed areas will be reseeded with the NPR Upper Zone Seed Mix; unless the BLM Authorized Officer, fee landowner, or Garfield County requests other seed mixtures. EnCana will only use seed that is certified weed-free. Seed bag tags will be collected and submitted to the BLM within 30 days of seeding. Seeding rate will be listed as pounds per acre of pure live seed (PLS). R d d S dM' ~ U ecommen e ee 1x or mner z one o· t b 1s ur ances Soecies (Common) Soecies (Scientific) Seeding Rate (PLS*/Ac) Grasses Slender Wheatgrass Elymus trachycaulus 3.0 lbs. Mountain Brome Bromus marzinatus 2.0 lbs. Nodding Brome Bromus anomalus 2.0 lbs. Idaho F escue Festuca idahoensis 1.0 lbs. Forbs Rocky Mtn. Pestemon Penstemon strictus 1.0 lbs. Cicer Milkvetch Astragalus cicer 0.9 lbs. Utah Sweetvetch Hedysarum boreale 1.3 lbs. Western Yarrow Achillea millefolium 0.5 lbs. American Vetch Vicia americana 1.3 lbs. Shrubs Mountain Big Sagebrush Artemisia tridentata 0.25 lbs. *Pure Live Seed Total 13.25 lbs/pls/ac The right-of-way will be scarified, tilled, harrowed, or roughened to a depth of 3 to 4 inches prior to seeding, where needed, to prepare the seedbed and improve revegetation potential. Seed will be placed in direct contact with the soil at an average depth of 0.5-inches, covered with soil, and firmed to eliminate air pockets around the seeds. Seed will be applied using a rangeland seed drill with a seed release and agitation mechanism sufficient to allow seeds of various sizes and densities to be planted at the proper seeding depth. Broadcast seeding will be employed only in areas where drill seeding is unsafe or physically impossible. Broadcast application rates will be double the drill rate. Immediately after broadcasting, the seed will be uniformly raked, chained, or dragged to incorporate seed to a sufficient seeding depth. Upon completion of seeding activities timber slash and larger shrubs that were previously cleared from the work area will be scattered along the reclaimed right-of-way to aid in soil stabilization and to minimize OHV traffic. 15 The NPR Reclamation Plan is provided in Attachment 8. The NPR Reclamation Plan describes in greater detail the restoration guide for disturbed lands on the NPR from the result of constructing well pads, roads, and pipelines. EnCana will provide a revegetation security to Garfield County for the amount of $306,000 or $2,500 per acre of disturbance on fee surface for the Phase II of the CoP Gathering Pipeline Project. The security deposit certificate is provided in Attachment 9. 2.9 WEED MANAGEMENT PLAN Noxious weed surveys were completed by WestWater for Phase II of the Conoco/Phillips Gathering Pipeline Project. Several populations isolated populations of houndstongue (Cynoglossum officinale), Canada thistle (Cirsium arvense), Musk thistle (Carduus nutans), Bull thistle (Cirsium vulgare) and spotted knapweed (Centaurea maculosa) were identified within the general area of the West Fork of Parachute Creek riparian zone and to a lesser extent its tributaries. The East Fork of Stewart Creek had isolated populations of houndstongue (Cynoglossum officinale), Canada thistle (Cirsium arvense), Musk thistle (Carduus nutans), Bull thistle (Cirsium vulgare) and spotted knapweed (Centaurea maculosa). The unnamed tributary of Davis Gulch, near the K35 496 CDP had isolated populations of houndstongue ( Cynoglossum officinale). Most of these drainages also had isolated locals of common mullein (Verbascum thapsis). Common mullein is not a listed noxious weed in Garfield County but is listed in nearby Rio Blanco County. The following measures identify how EnCana will use Best Management Practices to 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. Cleaning will be completed using either high-pressure water or compressed air to remove potential weed seeds. • 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. • Temporary disturbances will be kept to a minimum. • Establish native grasses and forbs. The NPR Reclamation Plan included in Attachment 8 has identified 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. The Weed Management Plan is provided in Attachment 10. 2.10 EMERGENCY RESPONSE The EnCana Emergency Response Plan is provided in Attachment 11. 16 The following table lists contact information for Emergency Services Personnel: Emere:encv Phone Numbers Utility Notification Center of CO (800) 922-1987 Garfield County Sheriff (970) 625-8095 Parachute Fire Department 911 or (970) 285-7711 Parachute Police Department 911 or (970) 285-7630 2.11 TRAFFIC IMPACT EnCana will use existing private access roads to gain access to the right-of-way during construction. These access roads are primarily gravel and/or dirt roads utilized by the oil and gas industry. No county roads will be used in Garfield County for construction of the project. 2.12 STAGING AREAS/CONSTRUCTION YARDS EnCana is proposing to construct a 3.3 acre construction/contractor yard. It is located on EnCana property along the Middle Fork of Parachute Creek. This yard will be used to store equipment and various construction items that will be used for Phase II of CoP Gathering Pipeline Project. This contractor yard was added into the project after all other areas had been surveyed for wildlife and sensitive resources. Due to heavy snow, WestWater could not perform these surveys prior to submittal of this Pipeline Development Plan. This location will be surveyed in the spring when weather conditions allow. EnCana's contractors will haul the pipe used for the project from a pipe wholesale distributor ocated in Garfield County and no pipe yards will be necessary for the construction of the roject. 2.13 HYDROTESTWATER The Phase II of ConocoPhillips Gathering Pipeline Project and the CDP discharge pipelines will be pneumatically tested with natural gas prior to being placed into service. 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 BLM Authorized Officer, fee-owner, and 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. 17 EnCana will monitor the right-of-way for noxious weed infestations and shall control noxious weeds as requested by the BLM Authorized Officer and Garfield County Vegetation Management personnel. Herbicide use shall be approved by the BLM Authorized Officer prior to use. 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. Additional mitigation measures may be attached as stipulations to the BLM Sundry Notice approval. 4.1 NOXIOUS WEEDS All construction equipment and vehicles will be clean and free of soil and weed seed prior to moving equipment and vehicles onto public lands, fee-owner property, and the EnCana NPR at the start of construction. Cleaning shall be accomplished by high-pressure washing with water or compressed air. EnCana will monitor the right-of-way for noxious weed infestations and shall control noxious weeds as requested by the BLM Authorized Officer, fee-owner, and Garfield County Vegetation Management personnel. Herbicide use shall be approved by the BLM Authorized Officer prior to use. The Weed Management Plan is provided in Attachment 10. 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. Cleaning will be completed using either high-pressure water or compressed air to remove potential weed seeds. • 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. • Temporary disturbances will be kept to a minimum. • Establish native grasses and forbs. The NPR Reclamation Plan included in Attachment 8 has identified 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. 18 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 patterns 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. 4.3 THREATENED, ENDANGERED, AND SENSITIVE SPECIES WestWater biologists completed extensive field surveys for the Greater sage-grouse and other sensitive avifauna listed by the U.S. Fish and Wildlife Service in the Birds of Conservation Concern within the area of the proposed Phase II of the CoP Pipeline Project in September 2007. Of the proposed pipeline routes, one is located within 500 feet of an active Greater sage-grouse lek. The majority of the proposed pipeline routes along the ridge tops are located within occupied sage-grouse habitat. Surface disturbance will not occur until after July I 51h within the occupied habitat to prevent the potential taking of sage grouse, and/or eggs. Since 2005 EnCana has treated areas on their property, within Greater sage-grouse habitat, to improve habitat by removing thick stands of serviceberry and oakbrush. This habitat improvement will continue in the future. WestWater has completed surveys for active and inactive raptor nests during the summers of 2005, 2006, 2007 and again in September 2007 for Phase II of the CoP Pipeline Project. At the time of the September 2007 surveys, many raptors had begun migration. Many unknown nests were found and could belong to a number of species. Earlier in the season four active red-tail hawk nests have been identified within 0.33 miles of the proposed pipelines. Additionally, five active Cooper's Hawk nests were located within 0.25 miles of the proposed pipelines and a single Peregrine Falcon nest was observed within 0.5 miles of one of the proposed pipelines. WestWater biologists will perform additional spring surveys in early 2008 to identify active raptor nests. If the raptors are observed nesting at the previously identified sites or new nesting locations, then timing limitation restrictions would be considered to minimize impact to the raptors. Biological surveys were completed for federally listed threatened and endangered plants and BLM sensitive species plants along the proposed pipeline routes in September 2007. WestWater biologists have concluded that no suitable habitat exists along the proposed routes for threatened and endangered or sensitive species plants. The Sensitive Resource Report for Phase II of the CoP Pipeline Project 1s included m Attachment 7. 19 4.4 CULTURAL RESOURCES A Class III Cultural Resource Inventory was conducted by Grand River Institute for the BLM portions of Phase II of the CoP Gathering Pipeline Project. No cultural resources were identified during the inventory. The following mitigation measures will be followed during construction and operation of the project: • All persons in the area who are associated with this project must be informed that if anyone is found knowingly disturbing historic, archaeological, or scientific resources, including collecting artifacts, the person or persons will be subject to prosecution and dismissal from the project. • The BLM Authorized Officer will be notified, by telephone, with written confirmation, immediately upon the discovery of human remains, funerary items, sacred objects, or objects of cultural patrimony. Activities must stop in the vicinity of the discovery and the discovery must be protected for 30 days or until notified to proceed by the Authorized Officer. If in connection with operations under this contract the project proponent, his contractors, subcontractors, or the employees of any of them, discovers, encounters or becomes aware of any objects or sites of cultural or paleontological value or scientific interest such as historic or prehistoric ruins, graves or grave markers, fossils, or artifacts, the proponent shall immediately suspend all operations in the vicinity of the cultural or paleontological resource and shall notify the BLM authorized officer of the findings. Operations may resume at the discovery site upon receipt of written instructions and authorization by the Authorized Officer. 4.5 AIR QUALITY Dust shall be controlled by the use of water or an approved dust suppressant, as directed by the BLM Authorized Officer and/or 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 Hazardous materials (substances) used during project construction may include solvents and other substances. In addition, petroleum products such as gasoline, diesel fuel, lubricating oils, and hydraulic fluid will be used. To prevent the accidental release of hazardous materials and petroleum products, activities shall comply with EnCana's Spill Prevention, Containment, and 20 Countermeasure (Spill) Plan, which is summarized below and provided in Attachment 12. The Spill Plan: • Identifies emergency notification and state agency names and phone numbers that shall be contacted in the event of a spill; • Requires sufficient supplies of absorbent and barrier materials on hand to allow for rapid containment and recovery of spills; and • Includes instructions for the collection and disposal of waste, soil, and other materials generated during, and cleanup of, a spill. The following precautions shall be taken to ensure that a release of petroleum and hazardous materials is prevented or contained: The project area will be inspected frequently to ensure proper use, storage, and disposal of material. • Equipment and vehicles shall be inspected daily for leaks and receive regular preventative maintenance to reduce the potential for leakage. All materials will be stored in a neat, orderly manner. Containers larger than 55-gallons will be stored in secondary containment structures that allow for 110 percent capacity plus potential precipitation. 21 8 !} -"' . -0 ~ i I ~ < " I ~ !; ~I a. 0 ~ ~ c ~ ._ ...I 0 5 c i1i m I I I ~ = ~ ~ w ~ z ~ E I c: 0. i ~ ;,; ~ ~ I .. li ~ ~ ~ 11 ! J ~ II i <a.a..o:o><...J I I- V> ~ w z 0 7-5 ., :; !;! "' u ::J n z J :J J \'J LI ~ \'J u ••I I Shale ------------------------------------~__,,, ~ (') " § I I I I I ~ I I eo 111~co cowrt cotllC'?T -• .. ! REV/SIC». 'Oldlsnd "' ("') 0 c ::: -< ;; ~ .... r- 11:: " ~.,,, "'M to -< <::: > M ; ii)~ 1~ F a-Jl! u~ ~H i:e I gi (') !U :, !U l CD ~ gi g ~ 2 Ro C) ll> "' ~ ~ S-r> I~ I 8 n-~~ j ~~!l~ §. !"q l ~ i 3 ~ ~ G) ~~ (I) :::t 0:: ~ Q cl' t: Cl :::: (") ~ ::r -t: CJ~ §-~ 01 ::s 0... ("') 0 ~ ; i ... ~:z. ~ .. .t • ., 8lM -~- .. ' ... ... ... l ~ t :!f zt 23 ~ 7 ,.. ... I- JU..M &itma En& t .... ... ... . T 1 ' - " EnCana A Reuben Gefa!d & v Stephanie o. ()ld18nd ) ' 1t17-Z7-HlCHl12 ' 2t ' 1::-(' ® I_,.-. . 7 Rellbcn Gerald & Sicpr.anieD. Ofdland ~ rm; = " I~ §> • l..M. OT ... • EnCena • ... ( ·~ ,. - ' " I, " • EnCana II I EnCana / _,, •• u .. 1-t ... to.~ t .... ..... •• 1~),w.. ~ ... .... ... • EnCana ' I 'n EnCana Ol . ... £nCa, r ' EnCana ~ .~ .... I "iT 41" ' ... ~ ... zo ~na ~ J' . -. . -v I- " ' "" EnCana ~ ~ • ,.. . b .&. ~..,. z ... @) EnCana ZS A T t' EnCana @> Exxon i'" el Mobil I a l iT 1915 T.4S. -R.96W • ... .... Exxon Mobil ' - - - " 1--~~~~~1 ::ilJ Exxon Mobil ~ m m ~ m > m I • , -i • • ,, 1\) I~ 1 ... " I ~ O/d1aflc. _, ~ eu. II. -·--- ' ' Etclna EnCana to ChevronUSA Inc. 29 ChevronUSA lr.c. ' ® @) = Berry Pet. Comp. ' ' ~ ' """ ' ~ 7-~ EnCDna ~ .. ,~ EnC;)f18 21 EnCana :z. ....... '~ 10 EnCana •• EnCana . l'/. ll.1..lll (§)' == 1 I\ E:sna /~ ~' ~~ u.w._ 7 .. EnCana ® ® Z7 EnCana ' ~ . /' - BLM ® 8.UI. SJ.JI. ~-~ A " EnCana II ExxtX'I ~ .. EnCana ZS EnCano II EnCana. ' EnCana Chevron USA Inc. ~ ' ·-- ' " ' 7 A Chevron u~~t<'-. A 12 Eio<on IAob# .. Exxon Mobil ll4 EnCana r EnCana ... ' ' ~~ § + ' § 1 ~ ' ~" IL- II- ' ~J lo 't: 1.l I- ~· I I-: ft SEE SH:kr ~ ====:;:::=======::;::::====:=:=:==:::==::::=-; WW WCAii Go\llPm.D COO!>'Tr l ··---··------- 1 i J REVISl()(I. .., ~ ffifffH i> " () :;;;: ~I I I I I I I I I ~ ' 1t " mt ~n:~i ( , f "/ ')( ~ I H I rn :::s I It ~ (") m ::;, I~ ' ~ { m 31 "'O EnCana a '"O 11~1 CD " ~ I I ~ 20 EnClna .. EnCar.a 32 EnCana ,. TheOil 1 Shale I Cc 22 l~ :,,J -~ EnCana ~I ~na~ n 1 I ~ ® i XI EnCana J ,-~ I ® .1 I'~~ -! BlM EnCana ~ ... ·; i . !""""I , ·~ =. rV", ... j .._.._ ...... .._~L ..... I • ; ·~ ~ ~ na I IS EnCana ll 81.M ,,. ,,. (<.. I = I ~ 8lM mm r-=-= ""'""' h 8lM@ IU..M. ~ ~ §Ji a fJ F !!~ gl~ ~~I :!iE I ~ ~ ~ 11 ~ ~ "' ~ Q 61 2 Ro ~ "' ~ ~ ~~ (I) =<. c: ::;- Q ;;? c: iil :::i (") ~ :r -c n~ 0 ::0 olll Cl :::i ~ g.. 0 .~ i :. 2 ~ g r r / r /; "" ~ ,r .st- r ;- di- #" ;- r ,,_ E;-.- * a ,; ii- SEESHEET3 ' I 77 I Exxon Mobil .. " I Tta &>!on MotXJ ~ ~ I ~· I EnCana " ~ I T30 EnCana " I ';"' EnCana rR t Mobil '-) 20 EnCana EnCana ..... -z 32 &:Cana 213$-zn-GO-Ol.5 I ® Ml)o.""' 2133 • E>=n Mobil 2l &:Cana XI EnCana I 10 EJo<on Mobil IS EnCana 22 EnC= so EnCana I I~ :UC. I j i II f "l> 1l 81.M .. Naval Oil Shale Res. 'I ... 23 Nava/Oil Shale Res. IM Nava!OiY Shale Res. ,._ \,~ " ... @> ~ -.-z t. ~ ~ .. ....+-- () ,.. ~ 0 ~ '"'( ;;E: s~ ~~ " . "' v REVIS/Div a: '"'( §: ;=> ~ ~ I gi (') Q) ::i Q) ""'O a "O CD ~ t'Tl ::i ~; Q ~ ~ ;:: l.Q u§ ~~~ ~1 ~ ts' h " ~ ~ ~ g; ~ ~ :x IT IT .... <.: c .,., (.) ~ C') :» "' 5i ~ 5" fl ~ a,~ (I)~ 0:: ::r (') cl' g i:i1 :::: n -c: ::r -r:: (") ~ 9.. ::u 0 ti/ ~ :::: c.. g. 0 ~ lsEESHEt f: 'j! ~ f ' I \ ' @c~,i@t JO EnCar.a ,.. EnCIJna. .~ ,.. EnCana r ; J ;- ~L t+ ~ ... ~lf. .. ii .. r ; ; I ~· I l!nCana "' -.~r fl 1 ->O Enear.a i ~ to EnCan:J Z1 EnCan;i Ill EnCana ' ~ I En Cana . Er.Cana I k::.. ·==--+----+---· ---t------+------"N I W1 .... ; ti; !'\ ,. ' Chevron USA Inc. ( Chevron US:,~~1--ooz . ., -.. 1 £nr..,ana ( ~ OI ¥..n.-1••-l/ J-,; R. ,.,.,,. ... ; 'I 1 AdJOlnl"C Zl 71 ~ I I .21 ' •I u ' ii • ,. ··11r""t R. 95 W'. ... I 7 ® T.5S. - R 811'. . I-.... .. + ,.+-~ Chevron USA Inc. i I .. ~ l rJ ~ II( I ' ... ,;; - 1--. I-t" ;l .. .. I-+ ""f. I.. 1 ... .., a "' '" i .; ,.+ ,.+ ...... "aJ..:Ai[--.- ~ ®u .. ..~ .1 ~ -·-,f-ar • Chevron USA lr.c. + .+k l :. I A l 11 r ,,,. I Tl?- 1 - ~ Chevron USA /ffc. .. ,,. . ;- .F .r ' + "" OU -4 -., "/ft I ~~ ~ I .+ I ... t" I (I"•-' EnCana ,.+ . " ;- # I -18 - EnCDno • ; .; l. En<jF' I-t" 'i'. I-,fr ~ lo I-,; .. + .. I-" I .. ... ? " #-1 I-'4 .. + • I-~ .. - I -:ll 7 l Er.Cana "' .. ; .. ;f .... ,,.+ 1/!nCana _,,_ ~ 10 EnCana u Er.Cana . ; l .~ .~ ---z 32 EnCana t:l~OO-OS5 .. ~ .&dJolDlll& 2171 2135-~ ; .,; ; as+- EnCar.a --2 - II Mobil Oil Ccrp. u Mobil Oil Corp. ; ,; .... ~ Ad~ 21:!3 \ ~· ;f ' • t .; SS EnCana t" EnCan.J ,; ' R. "W'. ; ti .,; a I - \ Mobil Oil Corp. r=... v 1t Mobil Oil Corp. .!' <§) 13 Mobil Oil Corp. , .!' "'" itt I ,; ~ ,--------... v 11 .... -. t@ ~ sol r .. .. 1 .. 1 1 , 1 .. a -< /!' R. 915 , ~ • ~ &>Cana Chevron USA Inc. 1,.- EnCana " i I i ~·' I-SIM .. • '• BW I to - I .. ~ "~--~ USA Inc. 'I ~ ,. t;" "11t!A <§) ~ , ~ r I Ill • r® I I EnCana ' 1 .. .!' r ~ "ll ' .. . ' ; ; .. Mobil Oil Corp. rmz"'I ir27-.; .. .!' + "" Mobil Oil Corp. @) --SLM ,.. ~ NA V A L 1' ~ ' ' :aJ.JL Mobil Oil Corp. .. ~ 211 BLM SLM @> I ''~ ~ at I( 9.UL~ ~. "'~~ I- BU• JobiJ Oil Corp. ~·· 0 IL • +~ Clu pi!hi ! j 7 1-, SLM ~ .. .~ ~ • 'I I . I " V/11/iams Production JRMT Co r 32 ... Pucke// ' Mcbif Oil Corp. t @v SLM I WHJiams Production RJ#Co * ta')L.__0;';,:'--. . .. • NavaJ5a!J A L E r Shale Res. t" -.. @) •• -.. Naval Oil ® I .... ... Shale Res. ,g R E S itfl VE ,; ~ • I ~ ; lelorJ ... """""f-- Land Co i _, d .:_ -1=# ·1 .. B<M n 8 Ut @) :-,:.!'. BLM ' ® Batre" Jlescurccsr Corporatlci1 • I ., d J LEGEND: -----EXIS TING PIPELINE ---------PROPOS ED PIPELI NE ----EXISTING ROAD Ill Uintah Engineering & Land Surveying 8~ South 200 E nst ,·en1n l . U t nh 84078 (4 .~~) 7 89-1 0 17 ·•FAX (43~) 789 -1813 N EnC ana OIL & GAS (USA) INC. TAYLOR YARD SECTION 19, T5S, R95W, 6th P.M . T 0 P 0 G RAP H I C l 28 08 m M A p MOtml DAY YBAR • ) EnCana Oil & Gas (USA) Inc. ) D-04 CDP SITE NW1/4 NW1/4, SECTION 4, T 5 S, R 96 W, 6th P.M. I SEC. JJ, 745, R96W "'---------------~ l============~~sr:c~4:.~~=s~.:R9~6:w ___ _!2~~o~s•!d£Di~·~d~e~C~M~~~ffu~n~k ---------u i ~ ~ " ~ t: ~ ,---~:t:!...!.-::e:!. .,..__--~--~ 60 60 0 30 Cut a nd Fill Slopes (SCAL E IN FEET) Are 1.5: 1 Unless Noted ~a.Ten ... M•'" ..... W!'!vEYING Evanston, Wyoming82930 Phone No. (307) 789-4545 Design Layout Proj ec t No. 07-04-09 Date Drawn : 1215107 &. j GRAVEL HYDROSEED Scale : 1" = 60' SHEET 1 OF1 atest Revs/on Date : ) I 60 0 30 (SCALE IN FEET) 60 EnCana Oil & Gas (USA) Inc. 030 CDP SITE Cut and Fill Sl opes Are 1. 5: 1 Unless Noted \ ~ \ l I I I / \ \ Ol ' ) I I f I i i I I I / I I I I j l /*? I i I f I I i I ' ) // I 1 GRAVEL Cl c) ~ " I !!? I I I I I I !/) / I I i HYDROSEED ~ !.TCll 906 Main.,,.,. Design Layout Scale: 1" = 60' SHEET 1 OF1 W~J!VEYI NG Evanston, Wyoming 82930 Phone No. (307) 789-4545 Project No. 07-04-09 Date Drawn: 11128107 ate Surve ed: a les! Re vis on Date: ) EnCana Oil & Gas (USA) Inc. F-09(8) CDP SITE SE1/4 NW1/4, SECTION 9, T 5 S, R 96 W, 6th P .M. ---;550----~o ~ -----75 60-----... 1~· _.--7560-----------'-.....___ / _.,,---_.. ------------ rlf'"o' l _.-"' ,,,..,---------15 70 60 --- \)/ ~" EXIS TING PAD Elev.= 7593. J' ----\. --------<...::: ___ >-.,;;; -- '-- 0 30 60 (SC ALE IN FEET) / !.TClt 906 Main street SURVEY I NG Evanston, Wyoming 82930 Phone No. (307) 789-4545 Design Layout Project No. 07-04-09 Date Drawn: 1111108 ---------- -----.... ~-----· ----- -----· GRAVEL HYDROSEED Scale: 1" = 60' SHEET 1 OF1 EnCana Oil & Gas (USA) Inc. G-17 (1) & G-17 (2) CDP SITES SW1/4 NE1/4, SECTION 17, T 5 S, R 96 W, 6th P.M. Bu~d;,{] -----------/~----~ / . t'/ £•i•lln9 Roo<I \ : ·-~ ~ ' -·-i p ---'-------""' N1. ----~~~~~~:;~:1r..;-~~r_-~~~· ~~~q.~~~~~~~~~?(;~~:i:~~:2{~· ,,:~:;~~;;~~}~~~!~~~+}~~ ~,. ·.•·.·. ' ./'. r . / v~ ' . V ' A ''-" ·.•.•:• ., '-.... . ,\'.:;;· . , x . I o -x<; / ~··, ". ~ ' '-, . ,<_>;;:: '~'··"'"''·· om,, I .~" ., v "V . .. y A #' v -:;.•:::\ ,,c;,:7.': • . ., • / • ' , ""'''' . • . , . "' v , .;v , .. '.-~''· . , ~ '·· ,,( "\,x. · ''>A>E'-/' ·, .>.;.; ,,!-, ;,O v-·'·"' ''" ;.:_~··};._·~ TU '1 /" ~ x /.' _;< • '-< '.< "' . • • A,, X /. . , ./ "·':; '·'''~·' · '• ,, ' __,-~I • . _, ' .· ' C<>• ··<; t. .. :·t~~,.,,;...: ~ ' , Gl7 1 2} CDP . ---I .. ~--Gl7(1} CDP ...._ / '. ·,_... y >' . .:··,· 1 /:•., -• '"'.;. -" ----------.__ ' '-/ . ·<C J:.·;~~-;~.·:•0;; ·, COMBlNEDPADGRADING / . ··-.....,.. • ·~i / ... ;~;;-·.,·-:.~ "' ..,,. . _,--QU.'"""""~ I ,.,,,,. x ,, ,... ........ , /' . ?-~"' ' ·:'·:· ··'·"~-:~.. . • , ' > 225' ,,... ... <= bt" 225' ,. ~ ::::----...... /. ; \ ,-,,·--:i_,,, .. ,. ·:,,· --"~ ~ ---,,..........-:. ~ - --eut 15353 ----- -:cr"t---_r_ ---- - - - -"',_ --~ .1 \ rz:-..·;·"':_,-.~·,1,.,, .. :,:. · , v ';/'.:' ,. .( 1 ·-.... • cv. ,. I / x." ' ~-, , "--1 ., "---· \ /'°·''"'' .... =~~·" \ / v / ' '' . F'ilI-1"'":" cy / ' • -. ,, "' . ........... , ..... , . /' /'" . , . I ""°"' . ,,... ,..-~ ,. ...... / \l:e'.-<"J.'ic~ \ · ,_,., '< ·.' , .c · <:>< Spoil.,.,.,,. I / ' / · '-.... ·•. / •. , ~ f. t':"''-::' =-~.-::-~;: C-20 O " ''-.. ~'r /-" ii' <[ • F'lllisheci .Elevation-8241.4' · .,..., ,/ ·, ·-. V F-~21 1 .:'--._ ·'· • ;.•.-' ,., ,-' .-' • _;( ~ I '<.. >, ~ x.. It) ,-(\• ' ...._ ,; ' • • 'i'*''''·"·D . ; ; ' y I .~ ,. x . • . ....-. ,~-. ' ,. sF' ~-, "'· ., .....___ zLC ,.,:., .• , .. ·.::"·' I .~ , v,. •,.. . T---2.2-I / __..., .... .,, / "' ·B . '·".q., .. ,., ... ,,, I # • I .!/' r "· _.-_... ,..-V • ,.., , ·'·> 1-~ ·"~t;;~ . ..,,-.~::,, . • .. . ' e· ./' ..-j ,.....-. -,...._ r ~' /. :_> .. y«:~.~.:~ ;,.,.,';< •• ' •-,o • j ,r" /' •. / -/ ' " "A / / 'J' "' •v <,I i.'S:::;b:~;:.;,\ .. I I ">.'.< .· < ,...~-• ,' I / 4t'' . ' ' ,-·.::: / "-:.:: ;:~i \ \ (>(-'.':::'.1.~.~.'.:.:_~.':<-=:~1;,~ , I -.// .....-··..,..-0·Y . ../\ ~0/ "' '°(:/ .. ~.:;:¥~~~::~·:.~~>~t/''.c ·... C-10.8 " ,. 225' F-12.9 v . / ·../ /' /'V' / ./VF-23.9 ,-.,.;: , ... .:_,~·-.. --,~ ... _.,, __ ,,., ·iK'fi:.Jr::;·:;.::~-.,,,- \ \ Cll N CQ 0 \ i ~ ,.., I ,,,. _,...,-v- GRAVEL II ~/ I ,/ '-8210-.. r"-:-,,:~::-:::-·/~.::1 HYDROSEED 11 !O<V / // ..... ~ ... ,. • / '\,'0 II , I I !O'J, I H~~ ~~~~~ • •• / ~ S£1)1;1£NT TRAP ---i / o.."\J 6 " STCN£ -·--. . ,. ,v ---- 906 Main Street Evanston. Wyoming 82930 Phone No. (307) 789-4545 60 0 30 60 f I _I I (SCALE IN FEET) Cut and Fill Slopes Are 1.5: 1 Unless Noted Design layout Project 07-04-09 No. Date 11127107 Drawn: Scale: 1" = 60' Date surveyed: Latest ReviSion Date: SHEET 1 OF 1 ....... .. ~··· 60 0 30 (SCALE IN FEET) EnCana Oil & Gas (USA) Inc. G-21 CDP SITE SW1/4 SE1/4, SECTION 21, T 5 S, R 96 W, 6th P.M . 60 .. ..._/, .9.Jo...._ ., .......... ·--.......... .... -~ '""'····-.... ...... .. -..... ·-·--·-· ... ·-····· Cut and Fill Slopes Are 1.5: 1 Unless Noted GRAVEL HYDROSEED Design Layout Scale: 1" = 60' SHEET 1 OF1 906 Main Stree t Evanston, Wyom ing 82930 Phone No. (307) 789-4545 Project No. 07-04-09 Date Drawn : 1215107 ate Surve ed: ates! Revis on Date: \~\\\\ I \ \ \ I \ \ i ) \ \ I J i I ~1·/i ! I i I I I I I I J ! I I I ~ a I t ~ ") o I I /~ r ~ I I · J f I I , . I I I I I f I ; i I I I ;1 I i I i I I ! I . I : i I i ;' I I i : ). / 11 I I I I I I / i I i / I I ~ ro"' "\ 60 0 30 (SCALE IN FEET) EnCana Oil & Gas (USA) Inc. K-22 CDP SITE NE1/4 SW1/4, SECTION 22, T 4 S , R 96 W, 6th P .M. 60 I / I I I I i I ti ... /f2 // I _/ Cu t and Fill Slop es Are 1.5: 1 Unless Not ed Design layout Project No. 07-04-09 Date 12114107 Drawn: I I I I ~ /!2 i I I I i i I I I I I I /1 I i I I I I I I / /; I ) I I /!; f i / & I J i i /' ! ., i i I / j i I , / I I / I / I / / I / I I I I I I II I I I I I I ,!' I I GRAVEL HYDROSEED Scale: 1" = 60' SHEET 1 OF1 ate SUNS ed: ates ! Revision Date: I ... __, EnCana Oil & Gas (USA) Inc. K-35 CDP SITE NE1/4 SW1/4, SECTION 35, T 4 S, R 96 W, 6th P.M. ,.,------------// ··-.......... "'.. ' .,.-· ,.. '-..., ............ ....... ....... .-:.:r::::;:~------------............. ......... ........ l:~;.f~~'f(:>::.?-.:-.-..,,_ _,....---·--',, ~ '-.,-----····-·---~--::-aaft~tJt~~---~~~:, --·------··---------····--~~:;~:;;~~ ~~-C-14 .l 265 C.11.S '\ ""--:~;}:i -~ ~- ~-~._,!·-,X ' TH p 7'..,!'-~'-, -::~I . .....______ ' ----""'3' I'-. ~ x ~ 0 \( 0''<' ~t-Q :;.;1 ~ -------'t'-' ' " ' • . " .....______ ---------~ ,_ '\ •• ~ ":>() C5.~, .. , . ' ,. / , . . . <' , / I -------------'-. --rt ~ ----~ ... ....,.._"""-). ~ ,1 ,,,,...,.. ........._ .,,,_ ,. ···---------------_ ........ !>lope :L?.; to ~;; -,« '< • '.., • -'°~ ··--... · --------'·" /y ' "" /' ' /' ,( )<. ·' ' v ' ___ __-\; , PAD GRADING ~ , • >< )< ... .....__ /---.'\.. '( ~ ~ ' TU 12 QUANIITES ~ ,,. , • ., ~--~ """ ------'~ 0 Cut-5074 cy. .-------.-~ ___ ' -' FJl-4966 cy. ,..,..,....-----; ('/ 1 i I ---------: ~ ... \"' '·.._ Spoil-108 cy. Fm . Bev. = 7867.3' f'llid Surfare Area-0.9 Aaes Area of Disturbance-1.3 Aaes ,..----~~ / ---,,,,__ ' "' ------·-------.,, ·. /" --/,- / r .. ofFiir - ----·-·. -,,---··--.,. ~-------'>C•OS-'7~ / ~ ~---!.-.../ ··----------~- '/',...~."'..Q<':<. GRAVEL "'-_4.,; f(::'::°:::/-,~-J HYDROSEED ,/~--.,.PT-----··-, \ //// @.!~£¥ 906 Main Street Evanston , Wyoming 82930 Phone No. (307) 789-4545 60 h ---0 30 60 (SCALE IN FEET> Cut and Fill Slopes Design Layout Project 07-04-09 No. Date Drawn: 1215107 Scale: 1" = 60' Date Surveved: latest Revision Date: SHEET 1 OF 1 Are 1.5: 1 Unless Noted ) EnCana Oil & Gas (USA) Inc. I / i I ~ \ \ M-21 CDP SITE 60 0 30 60 Cut and Fill Slo pes Are 1.5 : 1 Unles s Noted (SCALE IN FEET) ~ .!TClt 906M•m•m1 wr!VEYI NG Evanston, Wyoming 82930 Phone No. (307) 7894545 Design Layout Project No. 07-04-09 Date Drawn: 11112107 '.··".': ... \" •-', ::• I.... . . ... . J :. _.,., ·:·-.. ::··: ;·_ GRAVEL HYDROS EEO Scale: 1" = 60' SHEET 1 OF1 ate Surve ed: atest Revis on Date : ) I /i I I i ) EnCana Oil & Gas (USA) Inc. N-20 CDP SITE / 1·1 /,I 1!1 I I / I / /;/ I I I I I / : I I / ~I /I /' ":!!;. ) / //' -o.,rS/ !/_//~",i I / ,/ cf I / / t¥ I I I // /\ \ \ I r .. / \ \ \ \ / I '\ \ I / I I I I ) \\ I ./ I 1>) II I f' I I I / / I I / 1.1 I / 1roio / I I I I J ; /I/ I I I/ \ l ! I i ' I / I/ I / I I I J I j /// ~=========~ ~ ; I I\ <;) I (!'I i 'k!c5 I I I t¥ I I I I\ I I I I I I I 1 GRAVEL HYDROSEED Cut ond F ill Sl opes (SCALE IN FEET) Are 1. 5: 1 Unless Noted ~a.Ten ... M.,, ..... W~t!VEYING Evanston, Wyoming82930 Phone No . (307) 789-4545 Design Layout Project No . 07-04-09 Date 11127107 Drawn : Scale: 1" = 60' ate SuNe ed: ates t Revision Date: SHEET 1 OF1 ) 60 EnCana Oil & Gas (USA) Inc. 1-07 CDP SITE NE1/4 SE1/4, SECT/ON 7, T 5 S, R 96 W, 6th P.M. GRAVEL .. ---·-.. ..... '"'-. HYDROSEED -~ "'·,, I 0 30 60 Cut and Fill Slopes Are 1. 5: 1 Unless Noted (S CALE IN F EET) 906 Main Street Evanston, Wyom ing 82930 Phone No. (307) 7894545 Design Layout Proj ect No . 07-04-09 Date Drawn : 11119107 I Scale: 1" = 60' ates! ReVls on Date: \ \ \ \ ) i j j I I I I I / I i I j I I SHEET 1 OF1 ·n · ... ·. STANDARD FORM 299 (2/2003) Prescribed by DOJfUSOA/DOT P.L. 96-487 and Federal Register Notice 5-22-95 APPLICATION FOR TRANSPORTATION AND UTILITY SYSTEMS AND FACILITIES ON FEDERAL LANDS NOTEo Before completing and filing the application, the applicant should comple1c!y rc\'icw this p::ickagc and sched~1!e a preapplication meeting with representatives of the agency responsible-for processing the applkation. Each agency may h:lve specific and unique require1ncnts to be lllCI in preparing and processing the application. f\.1any nmc:-s, with lht:> help of lhe agency representative, the applic<ition can be completed at the prcapplic.ition meeting. I. Nan1e ::md a<ldre~s of applicant (include zip code) Pre:>tl)ll NelSQll EnCana Oil & Gas (USA) Inc. 2717 CR 215, Suite 100 Parachute, CO 81635 4. /\s Applicant arc you? (check one) .. D Individual b. IZI Corporntion* c. D Parlnersh ip/ Association* d. D State Govemn'!Cnt/Slatc Agency c. D Local Govcrmnent r. D Federal Agency •If chccke<I, comp/ele s11pplcm('lfta/ poge 2. Narnc. title, and address of authorized agent if different from item I (include zip code) 5. Specify \Vhat application is 10r: (check one) a. 1Z1 b. D c. D d. D c. D r. D New Authorization Kcncw1ng existing authorization No Amend existing au1horization No. Assign existing authorization No. Existing use for which no authorizalion has been received. Other* *if checked. pro1'ide details under item 7 (1. !fan individual. or partnership are you a citizen(s) of the United States? 0 Yes 0 No FORM APPROVED OMB No. 1004-0189 Expires: October 31, 2005 FOR AGENCY USE ONLY Application Number Date Filed ], TELEPHONE (area code) Applic~nt 970-285-2667 /\ uthorized Agent: 7. Project description (describe in detail): (:1) Type of sy~tcm or foeility,(c.g., c:inal, pipeline, rC>ad); tb) reloted structures and fodlitics; (c) physicnl spccifientions (length, width, grading, etc-); (d) tern1 of years needed; ( c) tinie of year of use or openiti<111: (I) Volume or arnount of product to be transported; {g) dur.ttion and timing of _ construction; and {h) te1nporary work areas needed for construction (Allach additional sheets, if additional space is needed.) a) The proposed project is lhree up to 20-inch diameter, steel natural gas gathering pipelines, three up lo 12-inch dian1cter, liquids gathering pipelines, six up to l 2~inch diameter, 3-phase stet!! natural gas pipelines, and s.ix up to 12-inch diameter, steel water supply pipelines. Total lengths of the pipeline routes are 48,348+/-feet, of which 24,338+/-feet is located on BL"t-.1 lands. The project is loc:ited in Sections 20, 21, 28, 29, JO, 31, and 32, T4S, R96\V, Sections 25 & 36, T4S, H.97\V. and in Sections 5 & 6, T5S, R96\V, 6't. P.lvl. b) ll1rec central delivery point (CDP) metering and separation facilities will be necessary for the operation of the project. The N20 496 and 030 496 CDP facilities would be located on BLM hmds, and the M2 I 496 CDP would be located on 1ee surface. The N20 496 CDP would require a work5'pace of JOO-feet by 125-feet and the 030 496 CDP Wl1llld require a workspace of 300-feet by 95-feet. Additionally, valves, pigging facilities. cathodic protection equipment, and relaled aboveground appurtenances could be necessary along the project route. e) ll1c six 3-phasc pipelines will collect unprocessed natural gas from the proposed ConocoPhillips F25 497, CJO 496, M32 496, C29 496, K3 I 496, an<l M21 496 well pads and lransporl the unprocessed natur~l gas to thi:: planned CDP facilities. 111e remaining proposed pipelinc11: will gather natural gas and produced water (liquids:) from the proposed 030 496, C29 496, and M2 I 496 Central Dclivcl)' Point ivletering Facilities and transport ihe natural gas and produced water lo the Divide Ridge Trunk Pi1>elincs, which will com1cc1 into existing EnCana Oil & Gas (USA) Inc. llpcratcd pipeline systems. The water supply pipeline will provide water to future drilling activities in the Double \\'illow lease unit. The pipelines will be installed in the same trench within a 70-feet width right·of-way. d) A JO-year tcrrn is requested fot lhc pipelines. e) The pipelines \\'ill be used year-round for transporting natural gas and water. I) I-'.stimatc\l \'Olume is 40.0 MMscfd. g) Construction would begin after August 15•1< upon receipt or the 1ighl·of-way ,grant Construction activities would last approximately 12-20 weeks. h) ,, temporary work area of 70 feet in width will be used during consln1ction of the project After construction is complete, the right-of-way \Viii rcvcrl toil pernumcnt t:ot)\:t11c11l uf 30 fi;:i;:L Total lcwµun.uy \li::;tmliarn.:1: un DLM hmd) i) 39.1 a1;11;::;. 8. Attach a map C<l\•cring area and show local ion of project propojaL Ph.•2se see l\tt:u:hment. 9. State or Local govcnnncnt approval: D Allachc<l (8J Applied for 0 Not require<! 10, Non-rctumahlc application fee: D Attached D Not required To be dt<termiuctl after call..'gory determination. IL Docs project cross inten1ational boundary or affeci intcmalional w;itenvays? 0 Y cs 13) No (If "yes," indicate on map) ! 2. (iive statement of your tcdmical and financial capability to conslruct, 01)erate, maintain, and terminate syskn1 for wliich authori7ation is heing requt.'stcd. EnCana Oil anti Gas (USA) Inc. (EnCana) is 11w largl'st indcpcndenl natural g:is 1)rotl11c{'r in Norlh Am{'rica and is a linnndnlly Sl'CUrl', intt'rnational comr>:u1y, which owns and operat<'S numerous well. pipl'lines, and facilitks across North America. EnCana has conducted O(ll'ralions, including construction and operation of pipelines, on public lands for more than 20 yt>nrs. £nCana has tl1e technic=-il and finaucial cap.abililit's lo conl>truct, opcralc, maintain, and trrminatl' IHI llJl>l't.I 1i 1t•li11t'.') and fodlili~·:,. (Continued on Page 2) This form is authorit:cd for local n:productio1L \Ja. Deso ihc e>!h..::1 lt<JsunaUk. aht1n;ili\1; route~ a11d rr1u1.k~ 1:u11sldcrcU. Thl.' 1>roposed pipdines tare p1u·ullding c.\:isting access roads for ap1>ro1dmatdy 76•Y., or the route on BL!\I hrnds to a Yo id new 1Jistu.-ba11cl'S and cross-counh-y routr:s. EnCana prf\'io11sly sel€!ctcd n routl' along Porcupine Ridge, but due lo potential wildlire issues EJJCana d<'ddcd to route th~ proposed pipt•linfS along the Porrn 1i11P f~11kh drain~ t:-- b. \Vhy wi;orc these alternatives not selected'? Alternalin.• routes would create more disturbances and rtquirc additional access and work areas. Pon:11pinc Hitlgc is better quality sage grouse habitat a!'l rornpared t~_!_he ~~~rent proposed Porcu inc Gulch route. c. Give l'xplanation as 10 wily it is necessary to cross Federal Lands. The ''clls arc Jol,'ated on BL~1 land. 14. List authorizations and pending applications filed tOr similar projects which may provide infom1ation to !he authorizing agency. (SpN·ifr 1111ml!er. dnli!, code, or 11(11111:) 15. Provide sltt\cment ofrH.'Cli for project, inchiding the. economic feasibility and items ~uch us: (a) co;:;t ofpropo!!al (C'Om1n1c·1io11, op~rario11, n>td 11mi111t!11(111<'1!}; (b) c~timated cost of next best alternative~ and (c) cxpcctct] public benefits. EnCana anticipates gas volu1nes to incr"ase by ap11roximat<'I)' 200 ~'liHsc[d each yl'ar for the next se\'l'ral years in the Piceance Ba:sin. The proposed projects is rC(Jllircd to 2athcr projected future \'Olun1cs of gas. a) Construrtion costs: ha\'e 1101 been finatiu•d. b) The cost of lhe next brsl alternative would be higher than the prrferrcd route brrause of the 11ip('linc length would inrrl'asc substantially. 'l'he propOSil'd route Is the shortest route with the least lmpart 10 the en,_.ironnwnt. I.') The public will benefit fro1n incr('ased p1'oduction of dtuncslic natural gas for industrial, commercial and rrsidl'nlial U§es. The well connects will benefit the royaltv O\\'ncrs whill' pro\o'ftling a fl'asible route wit11 minimal impact to lht surrounding arra. 16. Describe probable effects on the population in the area, including the social and !XOnomic aspects, and the rural \itCstylcs. No effects are a11tici1u1t('d. Ir advcrst' impacts are identified d11ring the Environrncntal Asse"nienl pro('ess, mitigation n1eas11rl's will be developed to redul.'e im acts to 1u·cc hi.hie Jc\'cls. 17. Describe likely environmental effects that the prop-0sed project will have on: {a) air quality; (b) visual impact; (c) surfoce and ground water quality and quan1ity; (ti) the control or structural change on any stre::ini or o-ther body of water; (c) existing noise le\lds; and (I) the surfoce of the land, inclu<ling vegctntion, pcm1nfrost. soil, and soil stability. No substantial effects are anticipated. If advl'rsc i1t1pnds arr identified during the l'.nvironmental Assessment process, mitigation measures will be de,·elopcd to reduce impacts to acceptable le\•cls. a) lmpact-s to air quality will be minimized through the use of dust suppressants. b) \risual impatl will bl' minimiT..ed since the projecl routes parnlll'I existing road corridors for approximately 18,494 +/-rel't on BL:\1 land. c) The r1roposcd route will cro5s Porcupine Guh:h in Sl'ction 30 and Cutof'f Gulch in Section 29, T4S, R96\V, 6'h l>.l\-1. Bft1P's will bl' usl'd to a\.·oid any potential impact lo the regulated drainage. Ground water quality and quantil}' should not be impacted. d) No lncrl'ase 10 noise levels wlll oH·ur. c) The proposed route will hwolve clearing approximately 39.1 acres on BLi\-1 land, in which short-tern1 disturbance will result rrom clearing acth·itics. No other Impact will reJult frotn this proj<"ct. 18. Describe the probable effects tha.t the proposrd project will h:n·e on (3) populations offish, plant life, wildlife, nnd m11rine life, including threatened and endangered species; and (b)marine mammals, including hunting, capturing, collecting, or killing these animals. No substantial cffrds art anticipated. Ir adverse impacts arc ilkntilied during the Environmental Asscssml'nl process, mitigation mrasures \Viii be developed lo r«:duce impacts to arceptable le\·els. 19. State whether any hazardous malerial. as denned in this paragraph. will be used, produced, hansportcd or stored on or within the right-of.way or any of th~ rigfu·of-way fadli!ic~. or used in the con.<;1ruc1ion. operation, nuiucenanrc or tctmirl.:llion of the right·oJ~way or any of its for ilities. °'H3iardous material" o~ans any substam;e, pollutant or contaminant that is listed ai haz:irdous wider tl>ll Con1p~l1Cn$h"e Elwironmcntnl R.cspom1:, C'orrip~nsalion. and Liability Act of J ')80, a) am;nded. 42 U-S.C, 9&01 et ~.;q., <1nd il5 regul~tions. The definition of h.:azarifous sul;~tar"cs under CERCLA if)Chidcs any ··haurdolLi waste" as defined in the Resource Consen·acior1 and Reco\ef)' Act or 1976 (RCRA). as amcndl'<l 42 U.S.C. 9601 et seq., and its regulations. The lerrn hazardo~ malerials also inclildes any nuclear or b)'pflXluet material as defined by the Atomic Energy Act of 1954, as auicnd~'<i. 42 lJ.S.C. 2011 -cl seq. ·111e tcnn docs not include petrolcun\ including crude oil or any fraction thNeofthat is 11ot otherwise specilkally listed or designated a.s a hai>arrlous. substance underCERCLA Scc1ion 101(1-*), 42 U.S.C. 9601(14), nor docs the 1em1 include natural gas. Thtre llill be no h:.11.1.1rdo1n mllleri als 111ed, producrtl, lr:tn~portttl, or 5loreil 11ilhln the p!J)tline righ!s+1)r·11·:1y~, 20. Name all the Departnient(s) /Agcncy(ics) where this application is being filed. Bureau of Land l\1anagcmcnt \Vhite River Field Ofliec 220 F.ast :\larkrt Slrl'('t 1'1l'eke-r. CO 81641 Attn.: l'enny Brown l llFR FBY lP:RTIFY. ·niar I :sm of lf'('fll !1£1'! :ind m1thl)ri:>('(l to (lo hu~in<"s~ in the St:it<" ::ind that I have pe1sonally examined the infoTm:stio11 cont:ained in the application and belie\le that the infonnation st1brnitted is coJTc<:t Lo the bcsl ofm~' knowkdge. Signature of Applicant~ tvb...-_ /J·L Date 02!05/2008 Title 18, U.S.C. Section 1001, makes it a crime for any person knowingly and willfully to make lo any department or agency of the United Slates any false. fictitious, or fraudulent statements or representations as to any matter within its juris9i.c~ion. SUPPLEMENTAL NOTE: The responsible agency(ios) Wiii providO add1t1ona! instructions I· PRIVATE CORPORATIONS a. Articles of Incorporation b Corporation Bylaws c. A certification from the State showing the corporation is in good standing and Is entitled to operate within the Slate. d Copy of re~olution £iulhorizing filing a. The name and address of each shareholder owning 3 percent or mom of the shares. together with the number and pP.rcentaoe of any class or voting shares of the entity which such sharoholder is authorized lo vote and lhe name and address of each affiliate of the entity together with, in the case of an affitiale conlrolled by the entity, the number of shares and the percentage of any dass of voling stock of that affiliate uw11etl, Uirectly or indirectly, by thal entlly, and In ltm -1;ase of an affiliate wtJIC11 controls that entity, the number ot shares and the percentage of any class of voling stock of that entity owned, directly or indirectly. by the affiliate, f, If applica!lon is for an oil or gas pipeline, describe any related righ1 ·of-way or temporary use permit applications, and identify previous applications. g, If applicalion Is for an oil and gas pipeline, identify all Federal lands by agency impacted by proposal. II • PUBLIC CORPORATIONS a. Copy of law forming corporation b, Proof of organization c. Copy Qf Bylaws d, CopyQf resolution aulhorizlng filing e. If application i:o; for an oil and gas pipeline, provide information required by item "J-rand ~Ht above. i Ill -PARTNERSHIP OR OTHER UNINCORPORATED ENTITY a. Arlicles of associaijon, if any b, If one partner is authorized to sign. reoo!ution aulhorizing action is c. Name and address of each participant. partner, assodalion, or other d lf application is for an oil and gas pipeline, provide informatk>n required by itern ··1.r and •J.g" above. CHECK APPROPRIATE BLOCK ATTACHED FILED" 0 0 0 0 LJ u 0 0 0 0 0 0 0 0 0 [8J 0 [8J 0 [8J 0 [8J 0 [8J 0 D 0 0 0 0 0 0 • If the required 1nformat1on 1s already flied with !he agency processmg this apphcatton and 1s current, check block entitled "Filed." Provide the file identification information (e.g., number, date, code, name). If not on file or current. attach the reQuested information. STATE OF COLORl\DO Bill Rilter, Jr., Governor James !:3. Marlin, Executive Director Dedicated to protecting and improving the health and environment of the people of Colorado 4300 Cherry Creek Or. S. Denver, Colorado 80246-1530 Phone (303) 692-2000 TDD Une (303) 691-7700 lace.led 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 Gosney, Reg Env Coard EnCana Oil & Gas (USA) Inc., 2717 County Road 215 Ste. 100 Parachute, CO 81635 970/285-2687 RE: Final Pennit, Colorado Discharge Pennit System -Stormwater Certification No: COR-037689 Local Contact: Dear Sir or Madam: North Parachute Ranch Garfield County Terry Gosney, Reg Env Coard 970/285-2687 Colorado Department of Public Health 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 pennit 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/wg/permitsunit/stormwater or contact Matt Czahor at (303) 692-3517. Sincerely, .~1/ r• /' . '/' .. , ', v.i w..:O ~'~-~--~ Kathryn Dolan Stormwater Program Coordinator Pem1its Unit WATER QUALITY CONTROL DIVISION xc: Regional Council of Governments Local County Health Department District Engineer, Technical Services, WQCD Permit File · STATE OF COLOMDO -· - COLORADO DEPARTMENT OF PUBLIC IlEALTll AND ENVIRONMf:NT WATER QUALITY CONTROL DIVISION TELEPHONE: (303) 692-3500 CERTIFICATION TO DISCHARGE 'UNDER CDPS GENERAL PERMIT COR-030000 STORMW ATER DISCHARGES ASSOCIATED WITH CONSTRUCTION Certification Number COR037689 This Certification to Discharge specifically authorizes: EnCana Oil & Gas (USA) Inc. LEGAL CONTACT: Terry Gos;11:;y, Reg Etzv Coord EnCana Oil & Gas (USA) Inc. 2717 County Road 215 Ste. 100 Parachute, CO 81635 Phone # 9701285-2687 Terry.gosney@encana.com LOCAL CONTACT: Terry Gosney, Reg Env Coord, Phone# 9701285-2687 terry.gosney@encana.com Dming the Construction Activity: Gas/Oil Field Exploration and/or Development to discharge stormwater from the facility identified as North Parachute Ranch which is located at: ·~ 10652 Garfield County Road 215. Parachute, Co 81635 Latitude 39.5731, Longitude 108.1093 In Garfield County to: --Parachute Creek Anticipated Activity begins 09/0112004 continuing through 06/30/2010 On 27,000 acres (400 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 of22 Prepared for: EnCana Oil & Gas (USA) Inc. Parachute, Colorado Volume 1 Master Stormwater Management Plan North Parachute Ranch COR-037689 The RETEC Group, Inc. January 2008 Document No.: 10331005-200 Contents 1.0 lntroduction ............................................................................................................................................. 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 2.1.4 Man Camps and Helicopter Pads ..................................................................................... 2-6 2.2 Area Estimates ................................................................................................................................ 2-7 2.3 Description of Existing Topography and Soils ............................................................................... 2-7 2.4 Description of Existing Vegetation .................................................................................................. 2-7 2.5 Identification of Potential Pollution Sources ................................................................................... 2-9 2.6 Allowable Sources of Non-Stormwater Discharge ........................................................................ 2-10 2. 7 Receiving Water ............................................................................................................................ 2-11 2.8 Master SWMP Permit Area Map and Individual Stormwater Site Plans ...................................... 2-11 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 ......... ... ... . . . . .. . . ......................................................... 3-2 3.2.5 Dewatering ........................................................................................................................ 3-3 3.3 Stormwater Manual of BMPs .............................................................. . . ............................. 3-4 3.4 Phased BMP Implementation ......................................................................................................... 3-4 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 atTemporarily Idle Sites ................................................... 5-1 5.1.3 Completed Sites....................................................................... . .................................. 5-1 5.1.4 Winter Conditions Inspections Exclusion ..... . . .......................................................... 5-2 C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc February 2008 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 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. C:,DA T A\2008 SWMP\2 .NorthParachuteRanchSWM P .doc 1-1 February 2008 2.0 Narrative Description of Master SWMP Permit Coverage Area Name of Permit Coverage Area: North Parachute Ranch Permit Number: COR-037689 Location of the Permit Coverage Area: • County: Garfield County • City: Located in Colorado approximately 1 O miles West/ North West of Parachute. (See Site Maps for distance to the waters of the state.) • Township/Section/Range: Township 5S, Range 95W, Sections 5-36. Township 6S, Range 96W, Sections 1-28. • Latitude/Longitude: Latitude 39.5731, Longitude 108.1093. Activities at the Permit Coverage Area will likely involve the construction of: • Well pads • Access roads • Pipelines • Compressor stations 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: Pre construction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. 2. Temporary BM P'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: 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. C:IDATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-1 February 2008 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 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 C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-3 February 2008 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 BM P'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 mix will be applied. This may occur after termination of this permit and under the coverage of a new construction permit. C:\OATA\2008 SWMP\2.NorthParachuleRanchSWMP.doc 2-5 February 2008 2.2 Area Estimates The total Permit Coverage Area is estimated to be approximately 27,000 Acres. The area that will undergo clearing, excavation, and/or grading is estimated to be approximately 400 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 Topography and Soils The Permit Coverage Area consists of three climatic zones and are referred to as the Upper, Middle and Lower Zones. The Upper Zone exists at elevations between 7,500 to 8,500 feet ASL; excluding southern facing slopes greater than 20%. Annual precipitation within this zone ranges from 16 to 25 inches annually. The soils within the Upper Zone are primarily loam textured soils within the Parachute-Rhone-lrigul series. These soils are mostly well drained, cool soils with dark-colored organic-rich surface layers derived from shale and sandstone. Soil textures above the rim are generally loam with loam to clay loam sub-soils and range in depth from <20" on ridges to >60" in swales. All of the upland soils above the rim are in low to medium erosion classes. The Middle Zone exists at elevations between 7,500 to 6,000 feet ASL; including southern facing slopes greater than 20%. Annual precipitation within this zone ranges from 13 to 14 inches annually. The area below the rim encompassing the cliffs, talus and steep colluvial slope at the base of the cliffs are derived from the Green River shale. Below the cliffs and talus is a zone of soils formed from colluvium and Wasatch Formations. Soils are shallow, poorly developed and there are many rock outcrops and badlands. Badlands are steep, nearly barren areas dissected by many ephemeral drainages. Soils on the upper slopes of this zone have a thin, organic-rich surface layer and little development of soil horizons. Soils on lower slopes are shallow to moderately deep and are well-drained. Surface texture is loam, clay loam, or silty clay loam with variable amounts of gravel, cobbles and boulders, talus slopes and colluvial slopes below rock outcrops. Soils are moderate to highly alkaline. Sub-soils usually have higher clay content and are calcareous. Erosion hazard is usually severe. The Lower Zone exists at elevations below 6,000 feet ASL and consists of lower terraces and floodplains along the valley bottoms of major drainages. Annual precipitation within this zone ranges from 10 to 13 inches annually. Soils in the Lower Zone are calcareous, moderate to strongly alkaline, some highly saline, loams and silty clay loams on benches, terraces and alluvial fans. Floodplain soils are sandy loam or loam stratified with sand, gravel or cobbles derived from shale or sandstone. Soils formed in the alluvium are derived from sandstones, shale's and marls and appear on benches, terraces, alluvial fans and floodplains in the Lower Zone. Surface texture ranges from loam and sandy loam to clay loam with sub-soils of sandy loam to clay. A map and table summarizing the existing soils within the Permit Coverage Area (including permeability, available water capacity, surface runoff, and erosion hazard of those soils) are provided in Appendix C. 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). A map indicating the existing ecosystem types within the Permit Coverage Area is provided in Appendix C. A description of the existing vegetation within each ecosystem (Mutel, 1992) is as follows: Mountain Grasslands and Meadows. Natural wet meadows and fens are dominated by moisture- loving species, primarily members of the sedge and rush families. Spike-rush (E/eocharis palustris). sedges, Canadian reedgrass (Ca/amagrostis canadensis), and tufted hairgrass (Deschampsia cespitosa) are common. Natural dry meadows are filled with members of the grass family. Bunchgrasses dominate at low elevations. Needle-and-thread, mountain muhly (Muh/enbergia C:\DAT A\2008 SWMP\2.NorthParachuteRanchSWM P.doc 2-7 February 2008 Montane Forests a. Ponderosa Pine Forests. These forests are dominated by the ponderosa pine (Pi nus ponderosa) and the Rocky Mountain juniper (Savina scopulorum). Common shrubs and herbaceous plants include the wax currant (Ribes cereum}, blue grama, side-oats grama, Junegrass, needle-and-thread, spike fescue (Leucopoa kingi1), and sulphur flower (Eriogonum umbellatum). b. Douglas Fir Forests. These forests are dominated by the Douglas fir (Pseudotsuga menziesi1). Common shrubs and herbaceous plants include common juniper (Juniperus communis), kinnikinnik (Arctostaphy/os}, mountain maple (Acer g/abrum), mountain lover (Paxistima myrsinites}, heart-leaved arnica (Amica cordifo/ia), and false Solomon's seal (Maianthemurn spp.) c. Aspen forests. Quaking aspen generally occur on north-facing slopes, and along drainage swales. The aspen forest generally has an understory of Wood's rose (Rosa woodsi1), Colorado blue columbine (Aquilegia caeru/ea), showy daisy, Thurberfescue, white geranium (Geranium richardsonil), common lupine (Lupinus argenteus), Fendler meadowrue (Thalictrum fend/en), and American vetch (Vicia americana). d. Lodgepole Pine Forests. These forests are dominated by the lodgepile pine (Pinus contorta). Common shrubs and herbaceous plants include broom huckleberry (Vaccinium scoparium), common juniper, kinnikinnik, sticky-laurel (Ceanothus velutinus), and heart-leaved arnica. Urban Areas. Urban areas contain an increased density of human-created structures in comparison to the areas surrounding it. Depending on the area, vegetation may account for anywhere between 20 and 70 percent of the total land cover, with the remaining portion being constructed materials. Types of vegetation within urban areas may be any combination of the above ecosystems, and may include areas of blue grass yards and parks. Cropland. Cropland vegetation may consist of wheat, corn, soybeans, or a variety of many other crops. Cropland may either lie fallow (bare of any crops) or contain crops at any stage of growth from seedlings to mature plants. 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, 20078) shall be evaluated: • The frequency of the activity (i.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). C :\DAT A\2008 SWMP\2.NorthParachuteRanchSWMP .doc 2-9 February 2008 • 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. In general, runoff from the Permit Coverage Area comes from springs and tributaries that lead to three different forks. West Fork will flow east to south east; Middle Fork will flow south to south east and East Fork will fiow west to south east. All tributaries will fiow to Parachute Creek and then in to the Colorado River. 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; and • 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, and distances to streams, wetlands, irrigation ditches, canals, and other surface waters; and • 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). C:IDA T A\2008 SWMP\2.NorthParachuteRanchSWMP .doc 2-11 February 2008 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 sill 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. C :\DAT A\2008 SWMP\2. NorthParachu!eRanchSWMP. doc 3-1 February 2008 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. 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): 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; C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 3-3 February 2008 • 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP_doc 3-5 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 stormwater management system (which includes all utilized BMPs) must be 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 be fully vegetated, erosion in these areas still occurs which requires maintenance activities such as regrading C:\DA T A\2008 SWMP\2.NorthParachuteRanchSWMP .doc 5-1 February 2008 • 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 noted 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 listed above). 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 5-3 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 conditions, except for 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. C:\DA T A\2008 SWMP\2.NorthParachuteRanchSWMP .doc 6-1 February 2008 8.0 Signature "I certify under penalty of law that this document and all attachments were prepared under my direction or supe1Vision 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." Printed name Title Signature Date Printed name Title Signature Date C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 8-1 February 2008 Prepared for: EnCana Oil & Gas (USA) Inc. Parachute, Colorado Volume 1 Master Stormwater Management Plan North Parachute Ranch COR-037689 The RETEC Group, Inc. January 2008 Document No.: 10331005-200 Prepared for: EnCana Oil & Gas (USA) Inc. Parachute, Colorado Volume 1 Master Stormwater Management Plan North Parachute Ranch COR-037689 Prepared By Emily Schneider Reviewed By Thomas M. Kreutz, P. E. The RETEC Group, Inc. January 2008 Document No.: 10331005-200 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 2.1.4 Man Camps and Helicopter Pads ..................................................................................... 2-6 2.2 Area Estimates .............................................................. . . ..... 2-7 2.3 Description of Existing Topography and Soils .......................................................................... 2-7 2.4 Description of Existing Vegetation .................................................................................................. 2-7 2.5 Identification of Potential Pollution Sources .................................................................................... 2-9 2.6 Allowable Sources of Non-Stormwater Discharge ....................................................................... 2-10 2.7 Receiving Water .......................................................................................................................... 2-11 2.8 Master SWMP Permit Area Map and Individual Stormwater Site Plans ...................................... 2-11 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 3.2.3 3.2.4 3.2.5 Material Handling and Spill Prevention ......................................................................... 3-2 Vehicle Cleaning, Fueling, Maintenance, and Tracking Controls .................................. 3-2 Waste Management and Disposal .................................................................................. 3-2 Dewatering ............................................. . . .......... 3-3 3.3 Stormwater Manual of BMPs ......................................................................................................... 3-4 3.4 Phased BMP Implementation ......................................................................................................... 3-4 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 C :\DAT A \2008 SWMP\2.NorthParachu\eRanchSWMP .doc February 2008 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 .............................................................................................................................................. 9-1 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 C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc ii February 2008 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 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. C:,DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 1-1 February 2008 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 (970)285-2600 • Midstream Services: Brad Ankrum 2717 County Road 215, Suite 100, Parachute, CO 81635 (970)285-2600 C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 1-2 February 2008 2.0 Narrative Description of Master SWMP Permit Coverage Area Name of Permit Coverage Area: North Parachute Ranch Permit Number: COR-037689 Location of the Permit Coverage Area: • County: Garfield County • City: Located in Colorado approximately 1 O miles WesU North West of Parachute. (See Site Maps for distance to the waters of the state.) • Township/Section/Range: Township 5S, Range 95W, Sections 5-36. Township 6S, Range 96W, Sections 1-28. • Latitude/Longitude: Latitude 39.5731, Longitude 108.1093. Activities at the Permit Coverage Area will likely involve the construction of: • Well pads • Access roads • Pipelines • Compressor stations 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 BM P'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: 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 depend·1ng on landowner requirements. C:\OAT A\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-1 February 2008 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. 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. C :\DAT A \2008 SWMP\2. NorthParachuteRanchSWMP .doc 2-2 February 2008 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 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 C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-3 February 2008 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 within the BMP Manual (discussed in Section 3.3). 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 Reclamation: 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 SLM/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 BM P'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, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-4 February 2008 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 BM P'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 BM P'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 mix will be applied. This may occur after termination of this permit and under the coverage of a new construction permit. C:\DA T A\2008 SWMP\2 .NorthParachuteRanchSWMP .doc 2-5 February 2008 2.1.4 Man Camps and Helicopter Pads Construction activities for man camps, helicopter pads, and other small areas are generally completed in the following sequence: Preconstruction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. 2. Temporary BMPs. 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, 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, diversions may be placed for 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 may 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 may 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, trailers, etc. and may be graded to establish surface drainage patterns, such as berms or roadside ditches as necessary. 7. Facility Construction. Trailers, buildings, or other structures will be installed or constructed. Interim Reclamation: 8. Gravel Surfacing. Areas used for access, parking, or materials staging will typically be gravel surfaced. 9. 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. 10. 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: 11. Reclamation of Post-Operation Areas. When operation of man camp or helicopter pad is no longer necessary, the area may 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-6 February 2008 2.2 Area Estimates The total Permit Coverage Area is estimated to be approximately 27,000 Acres. The area that will undergo clearing, excavation, and/or grading is estimated to be approximately 400 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 Topography and Soils The Permit Coverage Area consists of three climatic zones and are referred to as the Upper, Middle and Lower Zones. The Upper Zone exists at elevations between 7,500 to 8,500 feet ASL; excluding southern facing slopes greater than 20%. Annual precipitation within this zone ranges from 16 to 25 inches annually. The soils within the Upper Zone are primarily loam textured soils within the Parachute-Rhone-lrigul series. These soils are mostly well drained, cool soils with dark-colored organic-rich surface layers derived from shale and sandstone. Soil textures above the rim are generally loam with loam to clay loam sub-soils and range in depth from <20" on ridges to >60" in swales. All of the upland soils above the rim are in low to medium erosion classes. The Middle Zone exists at elevations between 7,500 to 6,000 feet ASL; including southern facing slopes greater than 20%. Annual precipitation within this zone ranges from 13 to 14 inches annually. The area below the rim encompassing the cliffs, talus and steep colluvial slope at the base of the cliffs are derived from the Green River shale. Below the cliffs and talus is a zone of soils formed from colluvium and Wasatch Formations. Soils are shallow, poorly developed and there are many rock outcrops and badlands. Badlands are steep, nearly barren areas dissected by many ephemeral drainages. Soils on the upper slopes of this zone have a thin, organic-rich surface layer and little development of soil horizons. Soils on lower slopes are shallow to moderately deep and are well-drained. Surface texture is loam, clay loam, or silty clay loam with variable amounts of gravel, cobbles and boulders, talus slopes and colluvial slopes below rock outcrops. Soils are moderate to highly alkaline. Sub-soils usually have higher clay content and are calcareous. Erosion hazard is usually severe. The Lower Zone exists at elevations below 6,000 feet ASL and consists of lower terraces and floodplains along the valley bottoms of major drainages. Annual precipitation within this zone ranges from 10 to 13 inches annually. Soils in the Lower Zone are calcareous, moderate to strongly alkaline, some highly saline, loams and silty clay loams on benches, terraces and alluvial fans. Floodplain soils are sandy loam or loam stratified with sand, gravel or cobbles derived from shale or sandstone. Soils formed in the alluvium are derived from sandstones, shale's and marls and appear on benches, terraces, alluvial fans and fioodplains in the Lower Zone. Surface texture ranges from loam and sandy loam to clay loam with sub-soils of sandy learn to clay. A map and table summarizing the existing soils within the Permit Coverage Area (including permeability, available water capacity, surface runoff, and erosion hazard of those soils) are provided in Appendix C. 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). A map indicating the existing ecosystem types within the Permit Coverage Area is provided in Appendix C. A description of the existing vegetation within each ecosystem (Mutel, 1992) is as follows: Mountain Grasslands and Meadows. Natural wet meadows and fens are dominated by moisture- loving species, primarily members of the sedge and rush families. Spike-rush (Eleocharis pa/ustris), sedges, Canadian reedgrass (Ca/amagrostis canadensis}, and tufted hairgrass (Deschampsia cespitosa) are common. Natural dry meadows are filled with members of the grass family. Bunchgrasses dominate at low elevations. Needle-and-thread, mountain muhly (Muhlenbergia C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-7 February 2008 montana), Junegrass, blue grama, and species of wheatgrass and bluegrass are common. Successional meadows contain a combination of weedy, introduced plants and plants typical of dry, rocky slopes, such as common dandelion (Taraxacum officina/e), golden banner (Thermopsis divaricarpa), Colorado locoweed (Oxytropic sericea), mountain pussytoes (Antennaria parvifolia), showy daisies (Erigeron speciosus), stonecrop (Sedum lanceolatum), and some sedges (Carex ssp.). Mountain grasslands, where Thurber fescue (Festuca thurberi) and mountain muhly were once the dominant grasses, are now largely dominated by blue grama, Canada bluegrass (Poa compressa), foxtail barley (Critesion jubatum), and other species as a result of grazing. Riparian Ecosystems a. Lowland Riparian Ecosystems. The lowland riparian ecosystem is dominated by the plains cottonwood (Populus deltoidea ssp. occidentalis), the valley cottonwood (Popu/us deltoidea ssp. wislizenii) and the peach-leaved willow (Salix amygdaloides). Common shrubs and herbaceous plants include snowberry (Symphoricarpos occidentalis), sandbar willow (Salix exigua), bulrush (Schoenoplectus /acustris), broad-leaved cat-tail (Typha lat1folia), prairie cord-grass (Spart1na pectinata), and western wheatgrass. b. Mountain Riparian Ecosystems. The mountain riparian ecosystem is dominated by quaking aspen (Popu/us tremuloides), lanceleaf cottonwood (Populus X acuminata), narrowleaf cottonwood (Populus angustifolia), and Colorado blue spruce (Picea pungens). Common shrubs include alder (A/nus incana), river birch (Betula fontinalis), chokecherry (Padus virginiana), common gooseberry (Ribes inerme), bush honeysuckle (Distegia involucrata), and mountain maple (Acer g/abrum). The lush riparian herbaceous understory includes forbs, grasses, sedges, rushes, climbing vines, mosses, lichens, and liverworts. Weedy invaders are also common. Shrublands. Shrub communities include semidesert shrublands found in dry lowlands, sagebrush shrublands that occupy a wide range of elevation from the Colorado Plateau to high mountain valleys, and montane shrublands other than sagebrush, characteristic of foothills and mountain regions. a. Semidesert Shrublands. Common shrubs include Great Basin big sagebrush ( Seriphidium tridentatum), greasewood (Sarcobatus vermiculatus), rabbitbrush (Chrysothamnus), four-winged saltbush (Atriplex canescens), and shadscale (Atriplex confertifolia). Common grasses and forbs include galletagrass (Hilaria jamesil), blue grama, alkali sacaton ( Sporobolus airoides). nodding eriogonum (Eriogonum cernuum), copper mallow (Sphaeralcea coccinea), and prince's plume (Stan/eya pinnata). b. Sagebrush Shrublands. Common shrubs include Great Basin big sagebrush, mountain big sagebrush (Seriphidium vaseyanum), rabbitbrush, and serviceberry (Amelanchier alnifolia). Common grasses and forbs include nodding eriogonum, copper mallow, and Indian Paintbrush (Castilleja spp. ). c. Montane Shrublands. Common shrubs include mountain mahogany (Cercocarpus), Gamble oak (Quercus gambeli1), rabbitbrush, serviceberry, and skunkbrush (Rhus aromatica). Common grasses and forbs include needle-and-thread, western wheatgrass, copper mallow, and Indian Paintbrush. Pinyan-Juniper Woodlands. Pinyon-juniper woodlands consist of scattered Utah juniper interspersed with big sagebrush. Pinyon pine is a minor component. Several other shrub species also occur in this community, including snowberry, bitterbrush (Purshia tridentata), snakeweed (Gutierrezia sarothrae), and serviceberry. In general, the sparse herbaceous layer consists of graminoids such as cheatgrass (Anisantha tectorum), Kentucky bluegrass (Paa pratensis), western wheatgrass, Indian ricegrass (Oryzopsis hymenoides), and squirreltail (Elymus e/ymoides). Forbs include Tracy's thistle (Cirsium tracyi), mariposa lily (Calochortus nuttallii), western wallflower (Erysimum capitatum), tapertip onion (Al/ium acuminatum), yarrow (Achil/ea /anulosa), stemless four-nerve daisy (Tetraneuris acaulis), and sharpleaf twinpod (Physaria acutifo/ia). All of these are native species, except for cheatgrass (an invasive, non-native annual species) and Kentucky bluegrass (a widely naturalized non-native perennial species). C:IDATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-8 February 2008 Montane Forests a. Ponderosa Pine Forests. These forests are dominated by the ponderosa pine (Pinus ponderosa) and the Rocky Mountain juniper (Savina scopulorum). Common shrubs and herbaceous plants include the wax currant (Ribes cereum), blue grama, side-oats grama, Junegrass, needle-and-thread, spike fescue (Leucopoa kingi1), and sulphur flower (Eriogonum umbel/alum). b. Douglas Fir Forests. These forests are dominated by the Douglas fir (Pseudotsuga menziesil). Common shrubs and herbaceous plants include common juniper (Juniperus communis), kinnikinnik (Arctostaphylos), mountain maple (Acer g/abrum), mountain lover (Paxislima myrsinites), heart-leaved arnica (Amica cordifolia), and false Solomon's seal (Maianlhemum spp.) c. Aspen forests. Quaking aspen generally occur on north-facing slopes, and along drainage swales. The aspen forest generally has an understory of Wood's rose (Rosa woodsi1), Colorado blue columbine (Aquilegia caerulea), showy daisy, Thurber fescue, white geranium (Geranium richardsoni1), common lupine (Lupinus argenteus), Fendler meadowrue (Thalictrum fend/en), and American vetch (Vicia americana). d. Lodgepole Pine Forests. These forests are dominated by the /odgepile pine (Pinus contorta). Common shrubs and herbaceous plants include broom huckleberry (Vaccinium scoparium), common juniper, kinnikinnik, sticky-laurel (Ceanothus velutinus), and heart-leaved arnica. Urban Areas. Urban areas contain an increased density of human-created structures in comparison to the areas surrounding it. Depending on the area, vegetation may account for anywhere between 20 and 70 percent of the total land cover, with the remaining portion being constructed materials. Types of vegetation within urban areas may be any combination of the above ecosystems, and may include areas of blue grass yards and parks. Cropland. Cropland vegetation may consist of wheat, corn, soybeans, or a variety of many other crops. Cropland may either lie fallow (bare of any crops) or contain crops at any stage of growth from seedlings to mature plants. 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 cul/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, 20078) shall be evaluated: • The frequency of the activity (i.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). C:\OATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-9 February 2008 The following items are potential sources of pollutants at the North Parachute Ranch. 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. • 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 Area, 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 in the Site Specific Records. (Volume 2) • Landscape Irrigation Return Flow. There are several locations in the Lower Zone where pipelines are within 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-10 February 2008 • 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. In general, runoff from the Permit Coverage Area comes from springs and tributaries that lead to three different forks. West Fork will fiow east to south east; Middle Fork will fiow south to south east and East Fork will flow west to south east. All tributaries will fiow to Parachute Creek and then in to the Colorado River. 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; and • 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, and distances to streams, wetlands, irrigation ditches, canals, and other surface waters; and • 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). C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-11 February 2008 Figures showing typical BMP locations along roadways and pipelines are provided as part of the BMP Manual (discussed in Section 3.3). C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 2-12 February 2008 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. C:\DATA\2008 SWMP\2.NorthParachuleRanchSWMP.doc 3-1 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 completed where necessary 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. 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 C:IDATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 3-2 February 2008 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. 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): 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- 41and42; 2. The source is identified in the SWMP; C:\DA TA \2008 SWMP\2.NorthParachuteRanchSWMP .doc 3-3 February 2008 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 stream flow. 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. 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: C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 3-4 February 2008 • 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. Jn 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. C:\DA T A\2008 SWMP\2.NorthParachuteRanchSWMP. doc 3-5 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 4-1 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 stormwater management system (which includes all utilized BMPs) must be 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 be fully vegetated, erosion in these areas still occurs which requires maintenance activities such as regrading C :\DAT A\2008 SWMP\2.NorthParachuteRanchSWMP .doc 5-1 February 2008 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) must document the following information when this exclusion is used: dates when snow cover occurred, date when construction activities ceased, and date melting conditions began. 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 repaired or replaced (according to the following section) 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. • Reseeding of any bare spots where vegetation has failed to establish. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 5-2 February 2008 • 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 noted 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 listed above). 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 5-3 February 2008 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). C :\DAT A\2008 SWMP\2 .NorthParachuteRanchSWM P .doc 5-4 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 conditions, except for 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 6-1 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 Hof 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. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 7-1 February 2008 8.0 Signature "I 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 affine and imprisonment or knowing violations." Printed name Title Signature Date Printed name Title Signature Date C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 8-1 February 2008 9.0 References CDPHE, 2007a. COPS 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.cdphe.state.co.us/wq/PermitsUnit/stormwaterlSWConstructionPermit.pdf CDP HE, 2007b. General Permit Application and Stormwater Management Plan Preparation Gwdance. Colorado Department of Public Health and Environment. Water Quality Control Division. Revised July, 2007. http://www.cdphe.state.co. us/wqlPermitsUnit/stormwater/SWConstructionApplication. pdf CDPHE, 2007c. Rationale. Colorado Department of Public Health and Environment. Water Quality Control Division. 2007. http://www.cdphe.state.co.us/wq/PermitsUnit/stormwaterlSWConstructionRationale.pdf CDP HE, 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/wqlPermitsU nit/stormwater/OGfactsheet. pdf EnCana. 2005. Orchard Unit Geographic Area Plan. EnCana Oil & Gas (USA) Inc. EnCana. 2007. Environmental Assessment of the Rulison Geographic Area Plan for Oil and Gas Development. EnCana Oil & Gas (USA) Inc. Mutel, C.F., and Emerick, J.C., 1992. From Grassland to Glacier -The Natural History of Colorado and the Surrounding Region. US EPA, 1990. NPDES Stormwater Regulations, 40 CFR Parts 122.26. U.S. Environmental Protection Agency. C:\DATA\2008 SWMP\2.NorthParachuteRanchSWMP.doc 9-1 February 2008