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HomeMy WebLinkAbout1.0 ApplicationSPECIAL USE PERMIT APPLICATION ORCHARD UNIT COMPRESSOR STATION GARFIELD COUNTY COLORADO, USA WAGON WHEEL CONSULTING 111 E. Third St, Suite 213 Rifle, CO 81650 (970) 625-8433 • SPECIAL USE PERMIT ENCANA OIL & GAS, INC. ORCHARD UNIT COMPRESSOR STATION TABLE OF CONTENTS I. SUP Application II. Associated Permits III. Project Description IV. Impact Statement V. Area Topo Map VI. Site Plan & Drawings VII. Proof of Ownership VIII. Legal Description IX. Assessor Map X. Surface Owners XI. Mineral Owners XII. Engineering Standards XIII. Fire Control Measures XIV. Soil Features XV. Landscaping and Reclamation Plans XVI. Storm Water Management Plan GARFIELD COUNTY • Building & Planning Department 108 8th Street, Suite 201 Glenwood Springs, Colorado 81601 Telephone: 970.945.8212 Facsimile: • • RECEIVED MAY 2 3 2005 GARF-ILLD COUNTY 970.384.347UILIDIG & PLANNING www.garfield-county.com Special Use Permit GENERAL INFORMATION (To be completed by the applicant.) Street Address f General Location of Property: Approximately 200 feet south of the intersection of Garfield Ct. Rd. 300 and State Hwy 6 in Section 34. Legal Description: Located in ttig NW ' of the NW V4 of Section 34, Township 7 South, Range 96 West, .6 P.M. Existing Use & Size of Property in acres: Gravel Pit, Approximately 17.5 acres. Description of Special Use Requested: Construction and operations of a new natural gas compressor station, - Zone District -RE Name of Property Owner (Applicant): EnCana Oilas(USA)97Inc. 285-2621 Address: 2717 Ct. Rd. 215, Suite 100Telephone: City: Parachute State: CO Zip Code: 81635 FAX: (970) 625-6691 Name of Owner's Representative, if any (Attorney, Planner, etc): Wagon Wheel Consulting, Inc. Telephone: (970) 625-8433 Address: 111 E 3`d St. Suite 213 City: Rifle State: CO Zip Code: 81650 FAX: (970) 625-8435 STAFF USE ONLY Doc. No.: Date Submitted: Planner: Hearing Date: TC Date: • 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: 1. Please submit, in narrative form, the nature and character of the Special Use requested. Submit plans and supporting information (i.e. letters from responsible agencies). Include specifications for the proposed use including, but not limited to, the hours of operation, the number and type of vehicles accessing the site on a daily, weekly and/or monthly basis, and the size and location of any existing and/or proposed structures that will be used in conjunction with the proposed use, and provisions for electric power service and any other proposed utility improvements. Be specific. 2. 1f you will be using water or will be treating wastewater in conjunction with the proposed use, please detail the amount of water that would be used and the type of wastewater treatment. If well permit and you will be utilizing well water, please attach a copy of the appropriate anyraved other legal water supply information, including a water allotment contract or an app water • augmentation plan to demonstrate that you have legal and adequate water for the proposed use. 3. Submit a site plan /map drawn to scale that portrays the boundaries of the subject property, ail existing and proposed structures on the property, and the County or State roadways within one (1) mile of your property. If you are proposing a new or expanded access onto a County or State roadway, submit a driveway or highway access per r property, for which a 4. Submit a vicinity map showing slope/ topography of y U.S.G.S. 1:24,000 scale quadrangle map will suffice. 5. Submit a copy of the appropriate portion of a Garfield County Assessor's Map showing all mineral rights owners of the subject property and public and private landowners adjacent to your property (which should be delineated). In additional, submit a list of all property owners and their addresses adjacent to or within 200 ft. of the site. This information can be obtained from the Assessor's Office. 6 Submit a copy of the deed and a legal description of the subject property. 7. If you are acting as an agent for the property owner, you must attach an • acknowledgement from the property owner that you may act in his/her behalf. • 8. Submit an statement that specifically responds to each of the following criteria from Section 5.03 of the Zoning Regulations: (1) Utilities adequate to provide water b and the Board of Gouservice nty Commass�onerpst shall either engineering standards and approved y be in place or shall be constructed in conjunction with the proposed use. (2) Street improvements adequate to accommodate s tolthe use shall e'therc volume dbe inby hplace e proposed use and to provide safe, convenient acces or shall be constructed in conjunction with the proposed use; (3) Design of the proposed use is organized to minimize impact on and from adjacent uses of land through installation of screen fences or landscape materials on the periphery of the lot and by location of intensively utilized areas, access points, lighting and signs in such a manner as to protect established neighborhood character; need to respond to 9. Depending on the type of Special Use Permit requested, you may additional review standards in the Garfield County Zoning Resolution Section 5.00 [Supplementary Regulations]. This may include uses such industrial uses [section 5.03.07 & 5,03.081, Accessory Dwelling Units [section 5.03.211, Utility Zine/Utility Substations, etc. Specific sections of the Zoning Resolution which can be located on the Garfield County web site at http:lfwww.garfield-county.comlbuilding_and,planninglindex.htn; or information can be obtained from this office 10. A $400.00 Base Fee: Applicant shall sign the "Agreement for Payment" form and provide the fee with the application, 11. Submit 2 copies of this completed application form and all the required submittal materials to the Building and Planning Department. Staff will request additional copies once the Special Use Permit application has been deemed technically complete. 11. PROCEDURAL REQUIREMENTS Application review process (The following steps outline how the Special Use Permit App works in Garfield County.) supplemental 1. Submit this completed application form, base fee, and all supe information to the Garfield County Planning Department. 11 will be received and given to a Staff Planner who will review the application for technical completeness. 2, Once the application is deemed technically complete, the Staff Planner will send you a letter indicating the application is complete. In addition, Staff will also send you a "Public Notice Form(s)" indicating the time and date of your hearing before the Board of County Commissioners. Prior to the public hearing, Staff will provide you with a Staff Memorandum regarding your requested Special Use. (If Staff determines you application to be deficient, a letter will be sent to you indicating that additional information is needed to deem your application complete.) 3. It is solely the Applicant's responsibility to ensure proper noticing occurs regarding the requested Special Use and the public hearing. If proper notice has not occurred, the public hearing will not occur. Notice requirements are as follows: a. Notice by publication, including the name of the applicant, description of the subject lot, a description of the proposed special use and nature of the hearing, and the date, time and place for the hearing shall be given once in a newspaper of general circulation in that portion of the County in which the subject property is located at Least thirty (30) but not more than sixty (60) days prior to the date of such hearing, and proof of publication shall be presented at hearing by the applicant. b. Notice by mail, containing information as described under paragraph (1) above, shall be mailed to all owners of record as shown in the County Assessor's Office of Tots within two hundred feet (200') of the subject lot and to all owners of mineral interest in the subject property at least thirty (30) but not more than sixty (60) days prior to such hearing time by certified return receipt mail, and receipts shall be presented at the hearing by the applicant. c. The site shall be posted such that the notice is clearly and conspicuously visible from a public right-of-way, with notice signs provided by the Planning Department. The posting must take place at least thirty (30) but riot more than sixty (60) days prior to the hearing date and is the sole responsibility of the applicant to post the notice, and ensure that it remains posted until and during the date of the hearing. 4. The Applicant is required to appear before the Board of County Commissioners at the time and date of the public hearing at which time the Board will consider the request. In addition, the Applicant shall provide proof, at the hearing, that proper notice was provided. 5. Once the Board makes a decision regarding the Special Use request, Staff will provide the Applicant with a signed resolution memorializing the action taken by the Board. Following the Board's approval, this office will issue the Special Use Permit to the applicant. If the Board's approval includes specific conditions of approval to be met, this office will not issue the Official Special Use Permit certificate until the applicant has satisfied all conditions of approval. The Special Use Permit approval is not finalized until this office has issued the Official Special Use Permit certificate signed by the Chairman of the Board of County Commissioners. • • 1 have read the statements information whi o, L.. orrect and -r" cura above and have provided the required attached to the best of my knowledge. L/1e6.44.5-t.)/72;;v .., c• (Sign -tore of applicant/owner) Last Revised: 11/07/2002 ENCANA " • EnCana Oil & Gas (USA) Inc. June 2, 2005 Fred A. Jarman, AICP Garfield County Building & Planning Department 108 8" Street, Suite 201 Glenwood Springs, CO. 81601 RE: Agent Authorization 370 17th Street Suite 1700 Denver. w0 80202 0 1-°' let (3031623-2300 roc (303) 623-2'00 ,wnv.cncana.com Mr. Jarman,. Wheel Wagon Consulting, Inc. (Jimmy Smith) has been retained by EnCana Oil & Gas S (USA) Inc. to request a Garfield County Special Use Permit for the Orchard Unit Compressor Station Facility located west of Parachute, Colorado. I authorize Wagon Wheel Consulting, Inc. to act as agent on my behalf Please call me at (720)-876-5377 if you have any questions or concerns. Sincerely, Wes Fortik EnCana Oil & Gas (USA), Inc. ira (111-1 i0fk Of Ft>c"IP C orptxutEx•. Used, vrck-t 1iceri 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 anppl onionand land lied ied by an hourly rate for the personnel involved. The Board recognized that the s 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 d, the ztual staff time spent will be charged against the Base Fee. After the Base Fee has billinginprior expende final applicant will be billed based on actual staff hours accrued. Any shall be paid applicant has consideration of any land use permit, zoning amendment or subd vis onspwa . bef accepteded for processing previously a failed to pay application fees as required, no new or additional pp until the outstanding fees are paid. Checks, including the appropriate Base Fee set forth below, must be submitted with each land use application, and made payable to the Garfield County Treasurer. Applications will not be accepted without thm ae requiranted application fee. Base Fees are non-refundable in full, unless a written request for witsubmitted 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 e following Base Fees shall be received by the County at the time of submittal of any procedural application to hich such fees relate. Such Base Fees shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board for the consideration of any application or additional County staff time or expense not covered by the Base Fee, which have not otherwise been paid by the applicant to the County prior to final action upon the application tendered to the County. BASE FEE $400 $325 $675 + application agency review fees and outside consultant review fees, as authorized pursuant to the Regulations, such as the Colorado Geologic Survey $200 TYPE OF PROCEDURE Vacating Public Roads & Rights -of -Way Sketch Plan Preliminary Plan Final Plat $100 Amended Plat Exemption from the Definition of Subdivision (SB -35) $300 Land Use Permits (Special Use/Conditional Use Permits) • Administrative/no public hearing • Board Public Hearing only • Planning Commission and Board review & hearing Zoning Amendments Era= Zone District map amendment • Zone District text amendment • Zone District map & text amendment = PUD Zone District & Text Amendment • PUD Zone District Text Amendment Board of Adjustment • Variance • Interpretation Planning Staff Hourly Rate • Planning Director • Senior Planner • Planning Technician • Secretary County Surveyor Review Fee (includes review of Amended Plats, Final Plats, Exemption Plats) Mylar Recording Fee • Page 2 $250 $400 $525 $450 $300 $500 $500 $500 $250 $250 $50.50 $40.50 $33.75 $30 Determined by Surveyor$ $11 — 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. essin each land use 2. County staff shall keep accurate record of actual time required for the proc bilin of will occur commensurateapplication, zoning amendment, or subdivision application. ' with the additional costs incurred by the County as a result of having to take more time that that covered by the base fee. 3. Any billings shall be paid prior to final consideration of any land use permit, zoning amendment, or subdivision plan. All additional costs shall be paid to the execution of the written resolution confirming action on the application. 4. Final Plats, Amended or Corrected Plats, Exemption Plats or Permits will not be recorded or issued until all fees have been paid. 5. In the event that the Board determines that special expertise is needed to assist sibe borthne in the review of a bn the applicant and d use permit, zoning amendment, or subdivision application, such costs paid prior to the final consideration of the application. All additional costs shall be paid prior to the • execution of the written resolution confirming action on the application. 6. If an application involves multiple reviews, the Applicant shall be charged the highest Base Fee listed above. 7. Types of "Procedures" not listed in the above chart will be charged at an hourly rate based on the pertinent planning staff rate listed above. 8. The Planning Director shall establish appropriate guidelines for the collection of Additional Billings as required. 9. This fee structure shall be revised annually as part of the County budget hearing process. Page 3 GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT AGREEMENT FOR PAYMENT FORM (Shall be submitted with application) GAitF'IELD COUNTY (hereinafter COUNTY) and (hereinafter APPLICANT) agree as follows: t APPLICANT has submitted to COUNTY an application for OR 4 .moi • (hereinafter, THE PROJECT). AR 2. APPLICANT underst ands and agrees that Garfield County Resolution No. the 98-09, as amended, guidelines or the establishes a fee schedule for each type of subdivision or land use review applications, and administration of the fee structure. rheethe or of 3. APPLICANT and COUNTY agree that because °entthe ofsize, costs invalved en pt e proposedg project, it isnot possible at this time to apartment of thehe full Base Fee, established for ta RODEmake additional tod application. APPLICANT agrees to make payment thereafter permit additional costs to be billed to APPLICANT.�ry asmposts are incurred. payments upon notification by the COUNTY when they cost for publication or cost of 4. The Base Fee shall be in addition a to and dCo exclusive 1Cornmiss� Hers for the consideration of an •nsu1tiflg service determined necessary by the y the Base Fee. If actual recorded costs exceed application n additional COUNTY staff time shall or peay additional billings pense not covered lta COUNTY to reimburse the eal COUNTY paid exceed the initial Base Fee, APPLICANT p y that all bills g for the processing.. of the PROJECT mentioned above. APPLICANT and use permit, acknowledgeszoning amendment, or subdivision plan. prior to the final consideration by the COUNTY of any APP_ CANT a Signature Date: -/3 Mailing Address: Page 4 • PROJECT DESCRIPTION The Orchard Mesa Compressor Station facility will be used b formation Oil & Gas (USA), Inc. (EnCana) to provide dehydration, hydrate protection, and compression for produced natural gas. Gatheringhang Mesas in the area transport natural gas from wells to the proposed OrcCompressor Station. Once compressed, the natural gas is delivered to a higher pressure system and transported to a location where it is conditioned for sales. Producing wells require that a gathering system operate at low enough pressures that optimize well performance and deliverability. wls ould binot Without the be able to boost in pressure from a compressor station, most we produce into a high pressure system. The wells would not flow and be rendered useless. Once raw natural gas is delivered to the inlet of a compressor station, free liquids (hydrocarbon and water) are separated using conventional separation equipment. This separation is critical to prevent damage to compression equipment. The hydrocarbon liquids are measured and combined with other liquids and sold. The water is then hauled to an approved water treatment and disposal facility. Prior to compression, a small amount of methanol is injected into the gas stream. The purpose of the methanol is to prevent hydrate formation after compression. Because the vapor portion of the water has not been moved from the gas stream, hydrate formation is of great concern after compression. Hydrates can form and cause damage to equipment and create unsafe conditions for employees. Once the gas is compressed, it is then dehydrated using a triethylene glycol (TEG) dehydration system. As the gas is contacted with lean TEG, the water is absorbed by the glycol, thus removing it from the gas. The glycol and water (rich) solution is sent to a reboiler where the water is driven off as steam. The lean TEG is then sent back to a contactor for a continuous removal of water from the gas stream. Once dehydrated the gas is then delivered to a common high pressure line and sent to a facility for more conditioning. Once conditioned, the gas is then sold and delivered to markets in the area. EnCana will maintain compliance with the conditions of the County and State authorizations and the operator must be familiar with the conditions placed on operation of the facility. Also, industry standards regarding equipment, construction, and operation will be upheld. The operation and condition will be checked at least once per day. The daily check will be conducted by site personnel who spend the majority of their work shift in the immediate area of operations. At most, routine operation of the facility will require two round trips per day of a pickup or similar vehicle from Parachute, Colorado to the site. Impact Statement The location of the new facility was selected for a number of reasons. The proposed location is within an area currently utilized and zoned for industrial purposes. Located adjacent to the proposed site is an active gravel mining and rock crushing facility operated by the surface land owner. The distance to the nearest residence is approximately % miles. The construction and operation of the proposed facility was strategically located so as to afford the ability to compress natural gas produced from current and future wells from around the surrounding area. This central location eliminates the need for a greater number of small compressor sites which would cause substantial impacts to the environment and local residents. The facility will be in continuous use and operation 24 -hours per day, year-round. The facility will be manned during normal, daylight working hours; however, EnCana will install a remote monitoring and control system, which will be patched into their 24-hour, manned, Gas Control office. EnCana currently owns and operates a 24" natural gas pipeline, which lies within the Colorado Department of Transportation (CDOT) right-of-way, approximately 300 feet north of the proposed facility. The natural gas from the facility will be discharged into this existing pipeline limiting the need for an additional high pressure pipeline over a greater distance. All permits have been obtained from CDOT and UPRR for the proposed tie-in. The discharge piping will be installed by boring the right-of-way so as to minimize additional ground disturbance. During the initial phase of operations, natural gas powered compressors will be installed, equipped with muffler systems designed to minimize noise emissions to the lowest levels possible. The projected noise levels will be well below permitted levels set forth by the State. EnCana plans to convert the compressors to electric drive motors as the facility expands due to increased volumes of natural gas being produced. Negotiations and permitting of the proposed power line are currently in progress. The compressors will be installed within an enclosed building which will aid in noise dampening, visual impact, and site security. A "Building Permit" and "Grading Permit" will be obtained from Garfield County Building and Planning Department for the construction of these facilities. Traffic on. Highway 6 and Garfield County Road 300 will increase during the construction phase of the facility. The impact to County Road 300 will be limited to approximately 300 feet. Construction workers and equipment will park on the facility site and will not be allowed to block or hinder normal traffic. Certified naggers will be utilized to insure safety as part of the "Traffic Control Plan", submitted to Garfield County Road and Bridge Department for obtaining an Access Permit. Following completion of the construction phase, it is anticipated that normal traffic to and from the facility will be limited to approximately 2 light -truck trips per day. Hazardous materials such as lubricating oils, glycol, and methanol, will be contained on site and will comply with CEPA rules and regulations. A 6 foot fence will be installed around the perimeter of the facility in order to insure safety and security to the Public, wildlife, and livestock. Adequate setback from adjoining properties will be observed so as to minimize impacts caused by the facility construction and operations (refer to site plan)... • • MAY -24-60 I Ut U b4 l'Pl tNU'Hf1R U 1 Lt4lrHb kUbH/ NU. rcuaz J r ;cxrield 'aunty Application for Driveway Per;_nii Application Date:12!912004 Permit Number:84 Per rrritee: Encana Oil and Gas(USA), Inc. l Termination Date:1 9/2005 County Road Number: 30B'r Instector: Jake Haff ,Uiistrict: 3 on hereby requests permission and authority from the Board of County Comtnissic uers to construct a driveway approach (es) on the right -of --way off of County Road, 300lntersection of CR 3OQand e v .24 on CR 30Q adjacent to Applicant's property located on the W side of road for the purpose of obtaining operty• Applicant submits herewith for the consideration and approval of the Board oft ;ounty Commissioners, a sketch of the proposed installation showing all the necessary specification detail including: 1. Frontage of lot along road. line, 2. Distance from centerline of road to property 3. Number of driveways requested 4. Width of proposed driveways and angle of approach. 5. Distance from driveway to road intersection, if any. 6. Sire and shape of area separating driveways if more than one approach. • 7. Setback distance of building(s) and other structure irnpre caused to couz ty road will be repaired at subdivision 8. No unloading of equipment on county road, any damag expense, 9. Responsible for two years from the date of completion. General Provisions is to be nstructed 1) The applicant represents all parties in interest, and affirms tthat the driv foyapproach tap purpose of) do g buoin o by him for the bona fide purpose of securing access to his property d noservicing vehicles an the road right of way. 2) The applicant shall furnish all labor and materials, perform all work, ant pay all costs in c neti dateion with the construction of the driveway(s). All work shall be completed within thin ty (30) daysperm. 3) The type of construction shall be as designated and/or approved byI kthe and of County Commis ion rs or their oval of the representative and all materials used shall be of satisfactory qualityand subject to inspection and appy Board of County Commissioners or their representative. 4) The traveling public shall be protected during the installation with prop4 warning signs and signals and the Board of County Commissioners and their duly appointed agents and employee shall be held harmless against any action for personal injury or property damage sustained by any reason of the a:ercise of the Permit. 5) The Applicant shall assume responsibility for the removal or clearance of snow, ice, or sleet upon any portion of the driveway approach (es) even though deposited on the driveway(s) u: the course of the County snow removal operations. UE • CiAY-4a UUS itt lid 'ob 1'r1 t.NUHNH U1L&GHSlU5H11NU .--, fencer th+=Pot on either side of the entrance shall 6) 3n the event it becomes necessary to remove any right -of --way braced before the fence is cut to prevent any slacking of the rtixnaining fence and all posts and wire be surely Commissioners. removed shall be turned over to the District Road Supervisor of the Botsd of County revisions or additions shall be made to the driveway(s) or its appurtenance!. on the right-of-way without written 7} No permission of the Board of County Commissioners. y on all roads ut der the jurisdiction of the Board of County 8) Commissioners and sof Gat field outlined hero and the all lSpecifications, s�+t forth on the attached hereof and Commissioners of Garfield County, incorporated herein as conditions hereof. l'H1L NU. fUnn3nr`t r Ui Spec a�Cions: 1. Driveway width-100ft 2. 100RWidex2Oft long 14" thick asphalt or concrete pad required. 3. SOit of gravel portion required. 4. Certified titraffic 5. Pad.Tipp glocatiou Pad # 310 missio:t to install the driveway approach (es) In signing this application and upon receiving authorization and per provisions and conditions described herein the Applicant signifies that he has read, understands and a�cce ying As specification plan reviewed and approved and agrees to construct the driveway(s) in accordance with the aC rnms io a sF by the Board of Court}' ip Signed: Address: ncana ane Telephone Number: Permit granted 3219 04, subject to the provisions, specifications and condit ions stipulated herein. For Board of County Comm1 overs' of f arheid County, Colorado: Represent ats Garfield County Road and Br tge Signature • 1 • MAY -24 -AM TUE U2:55 111 ENUHNH W IAtab L llbhil 1 NL; i^ HIS, NU. f eU;lbbib f Slneci icativr-s r ea approach is understood to be that portion of the county roa.i right -of way between the pavement edge } . A driveway a of tn,fFrt. between the roadway and abutting and the property line that is designed and used. for the interchange property. y 2.nt from the At an intersection, a driveway shall be restricted for a sate! i sit enceentrances tk�&intersection minim mpreserve the normal and . safe movement of traffic. (it is recommended intersection clearance of 50 feet be provided and for rural commercial entrances a minimum of 100 feet be prov ided.) 3. All entrances and exits shall be so located and constructed that vehicles approaching or using thein will be able to obtain adequate sight distance in both directions along the county road in order to maneuver safely and without interfering with county road traffic. 4. The Applicant shall not be permitted to erect any sign or display mater al, either fixed or movable, on or extending over any portion of the county roadghi than lfrontage of which ist 5_ Generally, no more than one approach shall be allowed any parcel or p.-Qperty the less in excess of one hundredt 100) one hundred (100) feet. Additional entrances or exits for parcels having , a frontage feet shall be permitted only after showing of actual convenience and ne cessity. 6. AH driveways shall be so located that the flared portion adjacent to the traveled way will not encroach upon adjoiru.ng property. greater than thirty (30) fee t measured at right angles to the centerline �, of commercial driveway shallrhave a permissible radii. No noncomnn ercial driveway shall have a width greater of the driveway except as increased by p except as increased by than twenty (20) feet measured at right angles to the centerline of the driveway, permissible radii. The axis of an approach to the road may be at a right angle to the centt rline of the countydegrees. road w nd of Adjustment angle will $(60)degrees but shall not be les , than sixty (60) gr between ninety (90) debates and sixty g be made according to the type of traffic to be served and other physica , conditions. areas on the county road right-of-way is specifically prohibited. 9. The construction of parking or servicing Commercial establishments for customer vehicles should provide off -tie -road parking facilities. 10. The grade u entrance and exit shall slope downward and away from tl.e road i surf-ace f co case lesssame sharia twenty e20) normal shouldcx slope and for a distance equal to the width of the shoulder percent (10%).feet from the pavement edge. Approach grades are restricted to not mn:re than ten p 1 1 . All driveways and approaches shall be so constructed that they shall n; it interfere with the drainage system of the S ury street or county road. The Applicant will be required to provide, at his ownes at ine e s expense, drainage structur entrances and exits, which will become an integral part of tine existing g ystem. The Boardof County of all drainage Commissioners or their representative, prior to installation, must approve the dimensions and types structures. Note: This permit shall be made available at the nhee site w�lieatinn. No permit will be issued without drawing, Fe and when work is being done. A work sketch or y proposed of the prnped dtiveway(8) must blueprint, or sketch. fIAY -24-2UUb TUE 1J ; 54 t ti"V OURNii U 1 Li UV l UbW i llu r rsn 11U. I cMa❑a i 4 EfielCGIYJ A licatianDrir+ewa Per I it IJSA), Permitee: Encana Oil and Gas( USA), Ner:84 Application Date: 121912004 ,ecWr: Jake Mali Road Number: 30f Insi umb County Termination Date:Ii9/�aDS Sub-Contractor;District: 3 Cornmisse-�ners Co construct a driveway approach (es) fission and authority from the Board of CountyCR f:uers on ons 30ct adjacent to Approach's herby requests p ][ntersectio�n of CR 309and Hwy on theright-❑f--way off of County l�csad 3(1 of obtaining access to �ra�p�Y• property located on the � side of road for the purposeCommissioners, a sketch of the Applicant submits herewith for the consideration and approval of the Board off County app specification detail including: proposed installation showing all the necessary 1 1. Frontage of lot along road. line. 2. Distance from centerline of road to property 3. Number of driveways requested 4.driveways and angle of approach. 5 Distance of proposed to road interne on, if any. roach. 5. Sizeannd shag driveway ting driveways if more than one app 6. and shape of area separating at subdivision on county road, any damage caused to caul ty road will be repaired 7. Setback distance buildings) and other structure improvements. g, No unloading g. Responsible for two years from the date of completion. expense. General Provisions 1) The applicant represents all parties in interest, and affirms that the dl iv e way approach r❑ach (es) is to be constructed by securing access to his property and not for the purpose of doing business or him for the bona fide purpose of sec S servicing vehicles on the road night of way. perform all work, ant pay all costs in connection with the 2) materials,of theconnection date. The applicant shall furnish all ).lAll r work shall be completed within this ty (30) dayspermit construction of the driveway(s). roved by the 13oard of County Commissioners or their 3) The eype of construction shall be asused design ated andiar approved and subject to inspection Con and approval their f the representative and all materials offer shall be of satisfactory quality Board of County Commissioners or their representative. and sigznals and the the installation with prop warning signs less against any Boardid 4) Thefo traveling C public shall be protected during appointed agents and employe shall be held harrri issiarners and 'their duly forpersonaly Gomm damage sustained by any reason of the e;ercise of the Permit. for injury or property' n anyportion of driveway(s) fir. the w, is of the et upon snyw removal nt shall assume responsibility for the remove] or clearance � if snow, ice, or sleet upon 5) The Applicant roach (es) even though deposited on the the driveway app operations. flA-24--rdUU5 TUE 02 55 vri !<h{eAMA U1 LhUR lU ii1 1N� r BA Nu. ieUJW:O r 4 r ua fence, thyi posts on either side of the entrance shall. 6) In the event it becomes necessary to remove any right-of-way event any slack -ins of the remaining fence and all posts and wire be surely braced before the fence is cut to pr Supervisor of the Bo;xd of County Commissioners. removed shall be turned over to the District Road Supe appurtenance! on the right -o€ -way without written 7) No revisions or additions shall be made to the driveway(s) w its app permission of the Board of County Commissioners. y on all roads under the jurisdiction of the Beard of County S) Provisions and specifications outlined Co Colorado, and the hall lSpecifications, s st forth on the attached hereof and Commissioners o£ Garfield County, incorporated herein as conditions hereof. pecsi 1 Co ions: 1, DriveWaY width -100A heli or concrete pad required. 2. 1QOttwidel2Of long x4" thick asp 3. 50ft of gravel portion required. 4. Certified true control required- 5. Pad:Tipping location Pad # 3-10 ermssio:t to install the driveway approach (es) In application and upon receiving authorization and p tprovisions and conditions signing this app reviewed and approved in accordance with the accompanying specification plan described herein the Applicant signifies that he has read understands and acct its the foregoing and agrees to construct the driveway(s) by the Board of County Comnmissione s. Signed: Address: Telephone Ntsrr+ber: it anted 1219_ J subject to the provisions, specifications and coedit ions stipulated herein. Permgr For Board of County Comrn 'one`s' of larfield County, Colorado: Representat► Garfield County Road and Bril lge Signature MRY-24-2UU5 TUE. U2: b5 Vhl E_NUHNH U1 Li UH5 LU iA1 I NU • H -1N NU. rZuaOain, r r, ug Sped icatiQ lS l , A driveway approach is understood to be that portionf the county roaAl riht-of way between interchange f trs�ffiC between the roadwayeand butting pavement edge and the property line that is designed and used for property. istance from the 2. At any intersection, a driveway shall be restricted sufficient l brie en a entrances thaintersection minimumto �e the and safe movement of traffic. (it is recommended for rus'a intersection clearance of 50 feet be provided and for rural commercial 1:ntrances a minimum of 100 feet be provided.) 3. All entrances and exits shall be so located and constructed that vehicle: approaching or using them will be able to obtain adequate sight distance in both directions along the county road ,n order to maneuver safely and without interfering with county road traffic. 4. The Applicant shall not be permitted to erect any sign or display mater. al, either fixed or movable, on or extending over any portion of the county road right-of-way. 5. Generally, no more than one approachow shall be allowed any parcel or p.-operty the frontage of which is less than one hundred (100) feet. Additional entrances or exits for parcels having ; a frontage in excess of one hundred 100) feet shall be permitted only after showing of actual convenience and necessity. 6. AU driveways shall be so located that the flared portion adjacent to the traveled way will not encroach upon adjoining property. -7. No commercial driveway shall have a width greater than thirty (30) feet measured at right angles to the centerline of the driveway except as increased by Permissible radii. No nancamm ercial driveway shall have a width greater than twenty (20) feet measured at right angles to the centerline of the driveway, except as increased by permissible radii_ S. The axis of an approach to the road may be ata right angle to the cents cline of the county road and of any angle between ninety (90) deigees and sixty (60) degrees rees but shall not be les.; than sixty (60) degrees. Adjustment will be made according to the type of traffic to be served and other physics, conditions. 9. The construction of parking or servicing areas on the county road right-of-way is specifically prohibited. Comrnercial establishments for customer vehicles should provide off -tie -road parking facilities. ce at the 10. The grid® of entrance and exit shall slopedawn®�� � width of the shoulder butd away from ti.e road tinf no case less same thaiirate rwenty (20) normal shoulder slope and for a distanceequal feet from the pavement edge. Approach grades are restricted to not room than ten percent (l0%). 11. All driveways and approaches shall be so constructed that they shall n+ it interfere with the drainage system of the street or county road. The Applicant will be required to provide, at his drama expense, system. in ge structures Countyt entrances and eadts, which will become an integral part of the existing g Commissioners or their representative, prior to installation, must approve the dimensions and types of all drainage structures. work Note: This permit shall be made available at the site where c nd eno peprmit ork is b li ing done. witho s etch or drawing of the proposed driveway(n) must accompany apP blueprint, or sketch. GRADING PERMIT APPLICATION GARFIELD COUNTY GRADING PERMIT APPLICATION 108 8'h Street, Suite 201. Glenwood Springs, CO 81601 Phone: 970-9-15-8212 / Fax: 970-384-3470 / Inspection Line: 970-38.1-5003 Permit No: Parcel/Schedule No: _2409.273-00-107 Job Address: Section 34, Township 7 South, Range 96 West 1 Lot No: 107 0 Owner: EnCana Oil & Gas (USA) Inc. Contractor: Engineer: Samuels Engineering, Inc. Sq. Ft. Grading 261,361 Describe Work: Grading and leveling and ecxavation of ground for installation of new compressor station. Block No: 00 Address: 2717 Ct. Rd. 215, Suite 100 Parachute, CO 81635 Address: Address: 5775 DTC Blvd. Suite 200 Englewood, CO 80111-3227 Cu.Yd. of Grading 9860.03 Subd. ! Exemption: N/A Ph: (970) 285-2621 Ph: Wk Ph: Ph: (303) 7144840 Lic. No. THIS PERMIT BECOMES NULL AND VOID IF WORK OR CONSTRUCTION AUTHORIZED IS NOT COMMENCED WITHIN 180 DAYS, OR, IF CONSTRUCTION OR WORK I3 SUSPENDED OR ABANDONED FOR A PERIOD OF 180 DAYS AT ANY TIME AFTER WORK IS COMMENCED. I HEREBY CERTIFY THAT 1 HAVE READ AND EXAMINED 11415 APPLICATION AND KNOW THE SAME TO BE TRUE AND CORRECT. ALL PROVISIONS OF LAW GOVERNING THIS TYPE OF WORK WILL BE COMPLETED WITHIN WHEATHER SPECIFIED HEREIN OR NOT. THE GRANTING OF A PERMIT DOES NOT PRESUME TO GIVE AUTHORITY TO VIOLATE OR CANCEL THE PROVISIONS OF ANY OTHER STATE OR LOCAL LAW REGULATING CONSTRUCTION OR THE PERFORMANCE OF CONSTRUCTION. Fee: Dated Permit Issued: Gff /s h4 i/6 u f »l c . Conditions to Permit: sl A OF O � / BUILDING AND PLANNING COUNTY ENGINEER APPROV ALJDATE APPROVAL.DATE • AGREEMENT IN CONSIDERATION OF THE ISSSUANCE OF THIS PERMIT, THE SIGNER. HEREBY AGREES TO COMPLY WITH ALL CODES AND LAND USE REGULATIONS ADOPTED BY GARFIELD COUNTY' PURSUANT TO AUTHORITY GIVEN IN 30.28.201 CRS AS AMENDED. THE SIGNER FURTHER AGREES THAT 1F THE ABOVE SAID ORDINANCES ARE NOT FL:LLY COMPILED WITH IN THE LCOATION, ERECTION, CONSTRUCTIO\, AND I F. OF THE ABOVE DESCRIBED WORK THE PERMIT MAY BE REVOKED BY NOTICE FROM THE COUNTY AND THAT THEN ANI THERE IT SHALL BECOME NULL. AND VOID. THE ISSUANCE OF A PERMT BASED UPON PLANS, SPECIFICATIONS AND OTHER DATA SHALL NOT PREVENT THE BUILDING OFFICIAL FROM THEREAFTER REQUIRING THE CORRECTION OF ERRORS IN SAID PLANS, SPECIFICATIONS AND OTHER DATA OR FROM PREVENTING CONSTRUCTIONOPERATION BEING CARRIED ON THEREUNDER WHEN IN VIOLATION OF THS CODE OR ANY OTHER ORDINANCE OR REGULATION OF THIS JURISDICTION. THE REVIEW OF SUBMITTED PLANS AND SPECIFICATIONS AND INSPECTIONS CONDUCTED THEREAFTER DOES NOT CONSTITUTE AN ACCEPTANCE OF ANY RESPONSIBILITIES OR LIABLITIES BY GARFIEID COUNTY FOR ERRORS, OMISSIONS OR DISCREPENCIES. THE RESPONSIBILITY FOR THESE ITEMS AND IMPLEMENTATION DURING CONSTRUCT/ON RESTS SPECIFICIALLY WITH THE ARTICTECT, DESIGNER, BUILDER, AND OWNER. COMMENTS ARE INTENDED TO BE CONSERVATIVE AND IN SUPPORT OF THE OWNERS INTEREST. Garrom.003 I HEREBY ACKNOWLEDGE THAT I HAVE READ .AND UNDERSTAND THE AGREEMENT ABOVE (INITIAL): EnCana Oil & Gas (USA) Inc. Orchard Compressor station Air Pernik Application Garfield County, Colorado May 2005 Prepared for: EnCana Gathering Services (USA), Inc. 370 171' Street, Suite 1700 Denver, CO 80202 Prepared by: LESAIR Environmental, Inc. 10394 W. Chatfield Ave. Littleton, CO 80127 Colorado Air Permit Application EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Table of Contents 1. Application, APEN, & APEN Addendum Forms 2. Emissions Summary Sheet 3. Location Map 4. Supporting Calculations Dehydration Unit Emission Calculations GRI-GLYCaIc Aggregate and Input Reports Fugitive Emission Calculations External Combustion Source Calculations Colorado Air Permit Application EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Application APPLICATION knit CONSTRUCTION PERMIT OR PERR,1iT MODIFICATION to as EMISSION PERMIT - - SEE INSTRUCTIONS ON REVERSE SIDE. Mail completed application, APENs, and tiling fee to: Colorado Department of Public Health and Environment Air Pollution Control Division 4300 Cherry Creek Drive South, APCD-SS-B1 Denver, Colorado 80246-1530 Telephone: (303) 692-3150 I. Permit to be issued to: ErnCana Oil & Gas (USA) Inc. 2. Mailing Address: 370 17th Street, Suite 1700 Denver, CO 80202 3. Agent for Service: N/A - 4. General Nature of Business: Natural Gas Gathering (SIC 1311) 5. Air Pollution Source Description: 120.0 MMSCFD TEC Dehydration Unit and Fugitives SCC Code: Is this a Portable Unit? No Days per year source will operate: 365 6. Source Location Address (Include Location Map): Orchard Compressor Station, NW Sec. 34, T7S, R96W If portable, is this the ❑ Initial Location, or ❑ home -base 1 7. STATUS change, etc.): ; New Air Pollution Source ❑ Modification to Permitted Source (Control Equipment added, process ❑ Transfer of Ownership - Transferred from: ❑ Existing Source- not permitted (Include Date of Source Start-up): ❑ Requesting to lirnit a source's Potential to Emit for criteria or Hazardous and existing sources) ❑ Requesting to limit a source's Potential to Emit for Hazardous Air sources only) , Air Pollutants using Regulation No. 3 (for new Pollutants only using Regulation No. 8 (for existing End: June 2005 • Other: ; Projected Dates for Construction to: Begin: June 2005 9. Projected Source Startup Date: June 2005 for each emission point/permit 10. Enclose check to cover APEN FILING FEES. One APEN should be filed NOTE: Additional processing fees must also be paid prior to permit issuance. Signature Of Legally Authorized Person (NOT Vendor or Equipment Manufacturer) Date Signed Richard S. Hillier — EHS Advisor Phone: (720) 876-3752 Type or Print name and official title of person signing above I i. Check appropriate box if you want: 0 Copy of preliminary analysis conducted by Division 0 To review a draft of the permit prior to issuance 'Note: Checking ad.e iia/1 could resile in inr rased tete urdior processing time Soc Rsrasn Fax: (720) 876-4752 For Division Use Only: Permit Number: AIRS ID: - - 0 N co N 0 U U c A to 5 'C3 C0 tagX w N a � N E w 0 0 r o `er m 0 p�q�N toV7o ZQ tl� CL u4 afb vu, Q Li k.dria w 0 : 1.-.8 cios 2 rZ ]0 r'^4 0 L z ❑x [--• 0 4,a. © W 4 ea Oz 0,11: 11; CO 0F 1M... Ertl < E 0 LU a 0. 124 Z n 0 Q T4-2 a w ❑w fs. NTS FUNCTION :8 C 03 4- < r17 4 fi C, x .C.6 'r H Si. o c z 2 �' 8 m o v1 2 4 u xo [U ,c0 0 o9A o ,a x a Q O o ,t- no co 0 0 O a '�tl 6 7 .-u n c i oe '' O -KrO v... N' - a• - c .P u UT-4`"Cviu t7 U --EEo;. W as a6'4-_6 O m : `E �n lb 1-1 v u _p O u c G o N' z R a R �5�Wy 0 N- -" N u 6® U a za0FUn.cY.UUU 000 ❑❑❑* x t-, 1.4 0 0 0 p h a A Ts a4 0 '1 • O' r* Il T ,§,4 ww ! w -o 0.)iZ 0 v 0- C • 513 10. CJ L 0 1 3 0 u w 4 W G W W u — 0 0 as d u 4o 3 e -u -to 4 40.0- 44+ I.ui Va.cd W abS Eve v L fig.: L I� Q >x Fa W u G a 0; a m v 0 • z W W V 1- 0 z z 0 W u Jg fly J co 0 ✓ W ry� U i O Permit Number u EnCana Oil & Gas N co -0 0 U 0 N tb t-1 0 0 V ressor Station Orchard Com Plant Location: w (720) 876-3752 Richard S. Hillier Person to Contact: w Richard. Hlllie E -Mail Address: Data Year Actual Emissions (lbs/yr) Requested Emissions (lbs/yr) 175 � 175 r'- a Emis tort Factor Source r w w a coc W Engr. Est. Engr. Est. _ Engr. Est. Engr. Est. Emission Factor (include units) C ta 0.0 til0 g 0 Z z Z Z Z C E `C Pl CsC < O V 0 U u i Z i 6 Benzene Toluene Ethylbenzene x cuc = U_ U Y,i HE g U U 11 CO roc T.- 0 0 1— r t- 1330-20-7 110-54-3 0 R 0 to 5 u 0 0 EH&S Advisor Richard S. Hillier Name ofa Responsible Official (please print) encana.com U 0 CO w 41 Cl) 6 Ir - L.. 0 r- MAL ADDRESS IOW of Section 34 0 W V) 0 d7 m it EH&S Advisor 0 co C1a 2 0 x m .0 C.7 z 0 5 0 O z V ur L w ° 0 oc C2 0 < c4 f- 2 0 W F' U S ,) 043 z+xQ a©a z 0 U 0 0 E 0 0 •D 15 Gas Processin NTS FUNCTION GENERAL DESCRIPTION OF THIS P ADDITIONAL INFORMATION OR REMARKS: 0 0 z 0. G 0 3 0 0 0 d 3- G 4 3 N 5 u [rQ1 N 0 O m 4) 6 N C1 ln Plant ID No. for Stack a z 0 3 Q C 3 4.. c u G 0 2 4 a 3 0 3 C Lt C Requested levet 43800 MMSCF u 0 2 0 7 2 u. a 2 m 6 0 8 2 3 4. Q nEE is - Raw Materials -Annual Consumption u 4) as 0 co coco 011 C 4a C fi d H0 0. A d x a. a E .0 C -.Jr.-- 8_g w 'au IL, f w 75 d (. s 4431 aill m.i3 n,0 0.0 x R. Q 0 O_> 6 43 y T pg -1 0 0 0 W G m CO -j ro .0 C4 .3 4.0. u C U d G Off.. 3 C ' 4' 0.. R. Lu-amF d ix U?L>,c:z oC cu. yfl u II! - u•a. R. L ° Q C,C a 5: , d u u. "' u 0 u 2 " ' n. o. II c-. � O 0 bey" D 1 1-2.0 0.0 n 0 a. u .� u 0 o C. t�.. Z�UF-�-?CV.oC�UU(7:0 EIEC D DOD. 3. ,. 00 d w w GRI-GLYCafc 0 u u 5 0 c cd 4. W 2 3 G 0 3' Q N CG z Q 1- -1 �° 0 07 z Exi Z WLIE 1c7.3. ddb Q 0 ELI ,n z z E .Ca 0 C] 0 t•^ 0 M C7 CONTROLLED 0 EMISSIONS. SEE "EMISSION ESTIMATES" INSTRUCTIONS ON BACK 1 Make/Model.. z a'2 < 2 E L1G u O Z0. 0) 0 C!) O w U o p II. 0 2: z 0n u 0 7. 4. C7 w ti w 0 0 0 F 0 ui u 3- Lti 0 a a z 0 Z 1) 3- w z 0 Z 2 a. Lu z 0 Z rn Lu 2 0 2 0 U 8 w z 0 2 0 U Signature of Person Legally Authorized to S ICE FILED. Send completed forms with fees to: AIRS Number Permit Number & Gas (USA) Inc 0 ca as Company Name: CO (720) 876-4752 [V Li. L.) L ca 0 (720) 876-3752 Orchard Compressor Station Plant Location: Person to Contact: Encana.co E -Mail Address: 73 V 41 Q p 03 � .>t OS H ca w a Requested Emissions (ibslyr) 1970 ,43 6240 225 350 Emission Factor Source V c.' 0 41 CI Q U GRI Glycals. GRI Glycalc GRI Clycalc V 41 Emission Factor (include units) 1-14 V N '1 G7 a 41r1 Ct —95% 0.7388 (lblhr) --95% 0.7119 (lb/hr) ,.,95% 0.0248 (1b/hr) --95%0 0.0398 (1b/hr) --95% 0.0023 (Ib/hr) J Control Equipment/ Efficiency 04 rs am PA 4 U U U U U Chemical Name Benzene Toluene Xylene Hexane Ethylbenzene a' 0 cm 15 a cL y}" F; NI. N N Chemical Abstract Service f Number N en ". (-' 1 6 rr 6 [, erl 1- V3 ,Q. G r.e et C'0 et 3.301 and other Non -Criteria Reportable Pollutant Ozone Depleting Comp " Use this form for reporting Hazardous Air Poll Richard S. Hillier Name of a Responsible Official (please print) Colorado Department of Public Health & Environment Air Pollution Control Division NOTICE OF START -[}F THIRTY -DAY PRIOR NOTICE REQUIRED OF ALL NEW SOURCES Even with a permit you cannot legally commence operation or conduct an activity for a new source until 30 days after you have notified the Division of the start-up date (Section 25-7-114(4)(j) of the Colorado Air Pollution Prevention and Control Act). In most cases, a permit is applied for and approved before the anticipated commencement date, so the 30 day prior notice causes no problems. Note: this form is not a Relocation Notice for portable sources. If, however you plan to commence your operation or activity as soon as you receive the permit, you should estimate the date you expect to commence (assuming the permit is approved) and fill out and return this form at least thirty days prior to that date. This will avoid a 30 -day delay between receipt of the permit and commencement. Notification can be accomplished by completing the form below and returning it to: Colorado Department of Public Health & Environment APCD-SS-B 1 4300 Cherry Creek Drive South Denver, CO 80246-1530 Please contact the Division immediately (303) 692-3150 if you have any questions or problems concerning this requirement. PERMIT NUMBER: "TBD" AIRS (AFS) NUMBER: "TBD.. ADDRESS OR LOCATION: Orchard Compressor Station NW, Sec. 34, T7S, R96W Garfield County PROJECT DESCRIPTION: 1 — 120 MMSCFD TEG Dehydration Unit. Operation of the emission source(s) to which the above pet -mit number has been assigned is expected to begin on June 2005 and will be in full operation by June 2005 EnCana Oil & Gas (USA) Inc. Richard Hillier COMPANY APPLICANT'S NAME (PLEASE PRINT) Brad Ankrum PERSON TO CONTACT FOR VERIFICATION OF STARTUP DATE APPLICANT'S SIGNATURE (970) 625-6672 EH&S Advisor TELEPHONE NUMBER OF CONTACT PERSON POSITION OR TITLE DATE Colorado Air Permit Application Modification EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Emissions Summary • co 0 0 c❑ (b 4) N D an 0 0 0 SC U Orchard Unit Orchard Compressor Station E S9 Z E N � G 63 Z nZ E -20 1 'u 0 II Lc E (1) 011 E via C C0 E 0 0- w 0 0 0 Total HAPS 0 0.1 0 0 0 O 03 .G co O CO4.0 0 0 d 4l (a 0 O 0 cP 0 0 N ri 8 R U a .0 .0 0 C 0 t O 0 0 0 0 C 0 0 O 0 M w T 0 O 0 0 o c 0 0 o C? 0 0 0 O 0 Ci O 0 0 0 O a M 0 R 0 O 0 0 0 O O 0 z 0. 0 0 O 0 0 O CV O 03 N O O O 0 a 0 d O G m W N ro E rn LL D O z 0 0 0 i9 LL 0 0 w O z 0 0 0 0 0 0 z w 4 04 .0 U 4 C N L U 0 so i7 C C o • N N C E • ay fla. 01 7 E a < a3 2 ▪ c • E o ell ci 0 C Q. • w ▪ E Oa O • 0. W t3 Qy• C N C E m s as 9' E a E a o E 41 ay 'p R 7 • W = 0 ® ▪ 4y O L1 O o oo o 00 w 1— 0 z Total HAPs Q M 4¢ 40 L3) 0 40 N 443 G3 CJ :^," .0 N n C (0 O N CO 0 0 O 0) O sr 7 0 4y 1,4 a, ea "0 0 N h tO 3 4) i U 4) 41 0 i] O O 0 O CY O 0 .0 0 0 0 cx 0 T 0. .44 C, 0 0 0 Q 0 0 0 0 0 0 O O .0 O 0 O 0 0 0 0 0 0 0 G O 0 0 0 0 0 0 0 0 0 0 0 O O O L b 0 C? 0 O 0 4 co 0 Q' Q 0. 0. O 0 N 0 01 0 fl 0 3 0 0 0 0 Ci r Y A O c0 0 0 0 N iS 0 z Y. Q 0 sp d C7 04 O D O O O O O 0 cD M .0 6 rte. V O 0 3 6 0 O 0 co 0 0 c 0 a i0 A, 0 0 1s_ 0 0, 2 2 O m N C 1.0 E as LL E LU C 40 4) NO3' 0 0 r0. C m 4) 0 E w a 6 t7 -J a) 6 2 0 O 0- 0 a 0 0 LL 0 w F 0 0 0 f-' tO pl 3 O 1- z 0 CP a 0 c� 00 0 0 a O 0. m r- 0 Al 0 di ctl m 6 0. 60 03 • Of CO P Oi 40 E D D a Oy at E c w x 0 44 c0 .0 .0 I . 88 c 0 0 C C • C C -o O l0 [5 U 7 O 2 iy Q) 44 a W p O i0C 40 03 0y a E E N 0 to to a E - c u a W a E ca m E D V o m 91 m m E% N W 0 � as Es E a) < c so 03 az Cm C? C co 'xiV -a7 U no b C_ ar y co a3 CJ al a 0 [? q W c C N O N W U Q a a c c a Q O O 0 p 0 C o U ro 03 01 C w a co .0 01 0. Q .FN N l9 R M E O II N - CL C C C _ C ▪ w w Dco Q Q W N m d(C 0 S? ( C .0 V N 0 CO ct • 7 O j C C fry N W V O °=- 'W N N CO e U 4A m D C , N ® 7 D ,0 = C 7n a7 C0w 0.1. 67 0 U N N E d E6 .Q e0 Y:,EO¢Ea' co as • co c0 W C 0 W • D t1 c0 7 C Ri D ay oy ay m s g' m a e as n a1 E i m c _ _ m. m N - .3 Cco, 0 rr• ,_ Op N ,N C DC O Nu4]fl0 d NO2 '" E • '0no E ma a rn 0 m c m x v em Q r 1 7 0 °a ay r a C x0,40 C c) 4% a c'- cas 0 is 44 N N iA i y C C . dft0.0 aymLCCY © a d Q LL K O O Cs, in. v O03N O 0 0 0 0 0 0 0 CO 00000 s- 0 z • Date: 5/6/2005 d co D el co 0 ev 0 w Orchard Unit cL) E Z ai c i6 Z E i7 m 0 LL 0 av CL 0. E O 0 0 0 4 E z 0 Li 0, x 0 0 1- (24 O RC1 1` co 11) L [x} a a co 0 0 c r"7" 0 10 cei 0 0 7 0. sert 0 Lis a *t CO 0 0 0 ci eA rri A '7 ZO O Sir Ctl Cr) 0 0 O w O Particulates n O a 0 0 O 0 O a 4 O 0 0 0 O Q 0 O C) O 0 C0 CS C7 a O P CA - C 0 0 0 0 0 O 0 a a a P 0 0 a G 0 0 0 O O C7 c0 0 0 0 0 CO 0 a 0 0 e7 0 v M a a ri 0 6 0 0 1- N 0 m 04 0) 0) 0 0 0 0 0 0 0 0 O 0 d 0.7 N 0 0 M 0 O O O b 0 O c E 0. 0' w 5 LIJ i Li Q C 0 0 4, 0 LL 1.17 C7 0 0 0 E w m R3 m .0 m m 2 coQ 5 D L- O Z O 0 a 0* enen 0 0 u_ P 0 O 0 N 0 N 0 w 0 0 M 0 O 0 to 0 0 0 (0 0 0 0) 0 0 m m 4, a 77 Rs 4) C CD CO N 10 m A m 61 w w= el) .0 .0 3 3 0 61 0 0 0 C C C C lculated using the maximum pump rate of .- N y� a a e 0 0 Q 6 W Nr E • E Ira "_ en §eaE ate co W.13 m y h 4"❑�1 4 e3 ® Y E � ary nn ELw12 i m O a m Qdn, en ca e 4eL C 76 m 0 c �Oj 13,) 0) 1).0 ea 0 0 owl a e e N m oa on o a C C a o tp N V em a ¢ n l6 O.0.O E N > SR 4a ❑ m N m L L C 9 U •c U Z O D 0 0 11• f E m 3 3 c ` • cla E sa ca ❑ m 7 7 C' C!l O fA N to W En C C en tQ C 4 « tlCtl N N E U U CO 7 mE w w Zf 8 O 1L-. ers N ❑ Q iG m a y m r v v m c 3 u) m is T� m > > E m m TS m m m y 8 p > C CD 512 N 3 ,e) 0 m E n o a c 1L -`i E a m m 9 y en 0 SZ d W •— '� N - f4. L ▪ m Eca m o QE •c E .Q ,0 O 2c V .-+ 1[) ,`If 0 C 4 '7 m oa Q 4) rn w E m m •1© m 0 c c m ns (4 g �'mmcc�Em % •K 7 m-0 4m a pf 0 C 0q� .0 QQei000F:CC Ne9 v CO N 41 co O 6 6 O 0 6 O CD C] O Q c. O O N w H 0 x CL a x 0 r O ui N-0 CP 0 Li r 40 0) C.) 0 0 N V m M1 4 C. N L d CO ell 40 �' 0 Particulates 0. Csi O 0 0 0 0 0 L 4 0 0 0 O O 0 O 0 0 O 0 0 0 0 T a m co as H n -c 0) N N 0 z 0. 0 C? m OD 0)) 0 L I 0 E 0. 7 0 w CD ., oo CO O Colorado Air Permit Application EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Location Map 10r1116-57. W TOP°, map pnnLed on 82/8/05 from "Caloredo.tpo" and "Untitled. Spg" 188_10000e W 100.051333" W W0584 100.06667. W Orchard Compressor Station z 08.11 7^ W 108.10000. W 1011/0833 W WG$64 100.0666 pfeco roti 9 y lag 4004006 ?Baled Oar TORTS 477000 444.44.41.040474404w 84141:00 (40.44+4.0:0444. Orchard Compressor Staion Topographic Map Garfield County Section 34 T7S R96W Drawn by: DRK Date: February 2005 Colorado Air Permit Application EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Supporting Calculations • Company Name: Field Name: Facility Name. EnCana Oil & Gas (USA) inc. Orchard Unit Orchard Compressor Station Date: 5/8/2005 Dela drator Still Column Vent Emission Calculations GRI GLYCalc 4.0 Method UNCONTROLLED EMISSIONS At an estimated annual rate of : 120.0 MMSCFD Glycol Pump Type: Electric Pump Rate: 8 gpm Calculated: Reference Individual HAP Component Emissions Reference Total HAP VOC Xylene (Lh/Hr) (TPY) 2,2,4 - No. Benzene Toluene Ethyl -Benzene Xylene n -Hexane Trimethylpentane 0.69 (Lb/Fir) (TPY) (Lb41-lr) (TPY) (Lbil-ir) (TPY) (Lbil-tr) (TPY) (Lb0-I0 iTPY) (L91Hri (FPY') DU02 4.49 19 854 14 79 84 72 0.80 3.48 14.24' 62.36 0.50 2 17 0 05 0.20 Flash Tank 0.08 035 0.15 0.66 0.00 0.02 0 05 0.22 0.37 1 52 0.03 3.14 Total 4.67 20.02; 14.83 65.38 0.80 3.50 14.29 62.57 0.87 3.79 0.08 0.34 Calculated: Reference Aggregated Emissions No. Total HAP VOC Xylene (Lh/Hr) (TPY) (LM-ir) (TPY) DU02 , 34.84 152.59 45.93 20137 Flash Tank 0.69 3.02 17 73 77.67 Total , 35.53 155.61 63.71 279.04 CONTROLLED EMISSIONS (using a combustion device or a VRU with flash tank vapors being routed back into the systt At an estimated annual rate .)f : 120.0 MMSCFD Glycol Pump Type: Electric Pump Rate: B gpm Reference No. individual HAP Component Emissions Benzene Toluene Ethyl -Benzene Xylene rt -Hexane 2,2,4 - Trimeth !pentane (LbIW) (TPY) (Lb/Hr) (TPY) (Lb1F lr) (TPY) (t WI _ (TPY) (Lbn-1r) (TPY) (LM -Ir) (TPY) DU02 0.22 0 95 0 74 13 24 0 34 0.17 0.71 3.12 0.02 0 1 1, 000 0 31 Calculated: Reference No. Aggregated Emissions Total HAP VOC (i.bMr) ' (TPY) (Lb/11r) (TPY) DU02 1.74 7 53 2 30 1x.07 Requested: Reference No. A re.ated Emissions Total HAP VOC (Lb1F1r) (TPY) (I Wrilal DU02 1 83 13 00 Mg1131.1111Ell GRI-GLYCalc VERSION 4.0 - AGGREGATE CALCULATIONS REPORT Case Name: File Name: MMSCFD . ddf Date: Page: Orchard CS - 120 MMSCFD L:\Datafile\GlyCalc 4.0 Data Eiles\AEC\Orchard Compressor Station 120 May 06, 2005 DESCRIPTION: Description: EnCana Oil & Gas (USA), Inc. TEG Dehydration Unit Composite Electric (7.5 gpm) 1150 psig / 70F / 120 MMSCFD Annual Hours of Operation: 8760.0 hours/yr EMISSIONS REPORTS: CONTROLLED REGENERATOR EMISSIONS Component lbs/hr lbs/day tons/yr Methane Ethane Propane Isobutane n -Butane Isopentane n -Pentane n -Hexane Cyclohexane Other Hexanes Heptanes Methylcyclohexane 2,2,4-Trimethylpentane Benzene Toluene Ethylbenzene Xylenes C8+ Heavies 0.1145 0.0626 0.0701 0.0315 0.0476 0.0262 0.0266 0.0248 0.0606 0.0276 0.0775 0.1215 0.0023 0.2244 0.7388 0.0398 0.7119 0.0676 2.749 1.503 1.683 0.755 1.143 0.630 0.638 0.595 1.453 0.662 1.860 2.917 0.055 5.385 17.732 0.954 17.084 1.623 0.5017 0.2743 0.3071 0.1378 0.2086 0.1150 0.1165 0.1085 0.2652 0.1209 0.3394 0.5323 0.0101 0.9828 3.2361 0.1742 3.1179 0.2963 Total Emissions 2.4759 Total Hydrocarbon Emissions Total VOC Emissions Total HAP Emissions Total BTEX Emissions UNCONTROLLED REGENERATOR EMISSIONS 2.4759 2.2988 1.7419 1.7148 59.422 10.8446 59.422 55.170 41.806 41.156 10.8446 10.0686 7.6295 7.5109 Component lbs/hr lbs/day tons/yr Methane 2.2909 54.980 10.0339 • Page: 2 Ethane 1.2524 30.057 5.4854 Propane 1.4022 33.652 6.1415 Isobutane 0.6294 15.105 2.7567 n -Butane 0.9525 22.859 4.1718 Isopentane 0.5249 12.597 2.2990 n -Pentane 0.5321 12.770 2.3305 n -Hexane 0.4956 11.894 2.1707 Cyclohexane 1.2110 29.065 5.3043 Other Hexanes 0.5519 13.245 2.4171 Heptanes 1.5498 37.196 6.7883 Methylcyclohexane 2.4308 58.339 10.6469 2,2,4-Trimethylpentane 0.0459 1.102 0.2011 Benzene 4.4876 107.704 19.6559 Toluene 14.7766 354.639 64.7216 Ethylbenzene 0.7952 19.085 3.4830 Xylenes 14.2370 341.688 62.3582 C8+ Heavies 1.3528 32.468 5.9254 Total Emissions 49.5186 1188.445 216.8913 Total Hydrocarbon Emissions Total VOC Emissions Total HAP Emissions Total BTEX Emissions FLASH GAS EMISSIONS 49.5186 45.9753 34.8380 34.2965 1188.445 1103.408 836.112 823.116 216.8913 201.3719 152.5905 150.2187 Note: Flash Gas Emissions are zero with the Recycle/recompression control option. FLASH TANK OFF GAS Component lbs/hr lbs/day tons/yr Methane 149.6994 3592.787 655.6835 Ethane 19.4270 466.247 85.0901 Propane 8.7313 209.551 38.2430 Isobutane 2.2775 54.660 9.9754 n-8utane 2.4548 58.916 10.7521 Isopentane 1.0695 25.668 4.6844 n -Pentane 0.8298 19.915 3.6345 n -Hexane 0.3696 8.869 1.6187 Cyclohexane 0.2238 5.371 0.9802 Other Hexanes 0.5721 13.731 2.5060 Heptanes 0.4912 11.789 2.1515 Methylcyclohexane 0.3171 7.611 1.3890 2,2,4-Trimethylpentane 0.0319 0.767 0.1399 Benzene 0.0829 1.991 0.3633 Toluene 0.1517 3.641 0.6645 Ethylbenzene 0.0042 0.101 0.0184 Xylenes 0.0491 1.178 0.2150 C8+ Heavies 0.0766 1.838 0.3355 Total Emissions Total Hydrocarbon Emissions Total VOC Emissions Total HAP Emissions Total BTEX Emissions EQUIPMENT REPORTS: Page: 3 186.8596 4484.630 818.4450 186.8596 4484.630 818.4450 17.7332 425.597 77.6714 0.6895 16.547 3.0199 0.2880 6.911 1.2613 COMBUSTION DEVICE Ambient Temperature: 36.00 deg. F Excess Oxygen: 20.00 % Combustion Efficiency: 95.00 % Supplemental Fuel Requirement: 2.53e-001 MM BTU/hr Component Emitted Destroyed Methane Ethane Propane Isobutane n -Butane Isopentane n --Pentane n -Hexane Cyclohexane Other Hexanes Heptanes Methylcyclohexane 2,2,4-Trimethylpentane Benzene Toluene Ethylbenzene Xylenes C8+ Heavies ABSORBER 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% 95.00% NOTE: Because the Calculated Absorber Stages was below the allowed, GRI-GLYCalc has set the number of Absorber Stages and has calculated a revised Dry Gas Dew Point. Calculated Absorber Stages: Calculated Dry Gas Dew Point: Temperature: Pressure: Dry Gas Flow Rate: Glycol Losses with Dry Gas: minimum to 1.25 1.25 1.17 lbs. H20 SCF 70.0 deg. F 1150.0 psig 120.0000 MMSCF/day 0.9564 lb/hr Wet Gas Water Content: Calculated Wet Gas Water Content: Calculated Lean Glycol Recirc. Ratio: Component Page: 4 Saturated 21.60 lbs. H20/MMSCF 4.40 gal/lb H2O Remaining Absorbed in Dry Gas in Glycol Water Carbon Dioxide Nitrogen Methane Ethane Propane Isobutane n --Butane Isopentane n -Pentane n -Hexane Cyclohexane Other Hexanes Heptanes Methylcyclohexane 2,2,4-Trimethylpentane Benzene Toluene Ethylbenzene Xylenes C8+ Heavies FLASH TANK 5.40% 99.88% 99.99% 99.99% 99.98% 99.97% 99.95% 99. 94% 99.94% 99.93% 99.88% 99.46% 99.91% 99.80% 99.46% 99.92% 94.23% 91.71% 90.55% 86.63% 99.80% Flash Control: Flash Temperature: Flash Pressure: Component 94.60% 0.12% 0.01% 0.01% 0.02% 0.03% 0.05% 0.06% 0.06% 0.07% 0.12% 0.54% 0.09% 0.20% 0.54% 0.08% 5.77% 8.29% 9.45% 13.37% 0.20% Recycle/recompression 70.0 deg. F 150.0 psi% Left in Removed in Glycol Flash Gas Water Carbon Dioxide Nitrogen Methane Ethane Propane Isobutane n -Butane Isopentane n -Pentane n -Hexane Cyclohexane Other Hexanes Heptanes Methyl cyclohexane 2,2,4-Trimethylpentane 99.98% 21.99% 1.48% 1.51% 6.06% 13.84% 21.65% 27.95% 33.07% 39.22% 57.42% 84.84% 49.38% 76.02% 88.87% 0.02% 78.01% 98.52% 98.49% 93.94% 86.16% 78.35% 72.05% 66.93% 60.78% 42.58% 15.16% 50.62% 23.98% 11.13% 59.28% 40.72% Benzene Toluene Ethylbenzene Xylenes C8+ Heavies REGENERATOR 98.28% 99.06% 99.53% 99.70% Page: 5 1.72% 0.945 0.47% 0.30% 95.13% 9.87% No Stripping Gas used in regenerator. Remaining Component in Glycol Distilled Overhead Water Carbon Dioxide Nitrogen Methane Ethane Propane Isobutane n -Butane Isopentane n -Pentane n -hexane Cyclohexane Other Hexanes Heptanes Methylcyclohexane 2,2,4--Trimethylpentane Benzene Toluene Ethylbenzene Xylenes C8+ Heavies STREAM REPORTS: 38.22% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.00% 0.66% 0.64% 0.54% 3.34% 1.11% 0.48% 3.99% 1.30% 5.03% 7.92% 10.39% 12.91% 9.60% 61.78% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 100.00% 99.34% 99.36% 99.46% 96.66% 98.89% 99.52% 96.01% 98.70% 94.97% 92.08% 89.61% 87.09% 90.40% WET GAS STREAM Temperature: Pressure: Flow Rate: 70.00 deg. F 1164.70 psia 5.00e+006 scfh Component Conc. Loading (vol%) (1b/hr) Water 4.55e-002 1.08e+002 Carbon Dioxide 2.08e+000 1.21e+004 Nitrogen 8.38e-002 3.09e+002 Methane 8.95e+001 1.89e+005 Ethane 5.45e+000 2.16e+004 Propane 1.64e+000 9.52e+003 Isobutane 3.22e-001 2.47e+003 n -Butane 3.36e-001 2.57e+003 Isopentane 1.31e-001 1.24e+003 n -Pentane 9.82e-002 9.34e+002 n -Hexane Cyclohexane Other Hexanes Heptanes Methylcyclohexane 2,2,4-Trimethylpentane Benzene Toluene Ethylbenzene Xylenes 4.06e-002 2.12e-002 6.17e-002 5.72e-002 3.48e-002 3.50e-003 7.60e-003 1.47e-002 6..00e-004 7.60e-003 4.61e+002 2.35e+002 7.01e+002 7.55e+002 4.50e+002 5.27e+001 7.82e+001 1.79e+002 8.40e+000 1.06e+002 C8+ Heavies 2.32e-002 5.21e+002 Total Components 100.00 2.44e+005 DRY GAS STREAM Temperature: Pressure: Flow Rate: 70.00 deg. F 1164.70 psia 5.00e+006 scfh Component Page: 6 Conc. Loading (vol%) (lb/hr) Water Carbon Dioxide Nitrogen Methane Ethane Propane Isobutane n -Butane Isopentane n -Pentane n -Hexane Cyclohexane Other Hexanes Heptanes Methylcyclohexane 2, 2, 4-Trimethylpentane Benzene Toluene Ethylbenzene Xylenes 2.46e-003 2.08e+000 8.38e-002 8.96e+001 5.46e+000 1.64e+000 3.22e-001 3.36e-001 1.31e-001 9.81e-002 4.06e-002 2.11e-002 6.17e-002 5.71e-002 3.46e-002 3.50e-003 7.16e-003 1.35e-002 5.43e-004 6.58e-003 5.84e+000 1.21e+004 3.09e+002 1.89e+005 2.16e+004 9.52e+003 2.47e+003 2.57e+003 1.24e+003 9.33e+002 4.61e+002 2.34e+002 7.00e+002 7.54e+002 4.48e+002 5.27e+001 7.37e+001 1.64e+002 7.60e+000 9.21e+001 C8+ Heavies 2.32e-002 5.20e+002 Total Components 100.00 2.44e+005 1111 LEAN GLYCOL STREAM Temperature: 70.00 deg. E Flow Rate: 7.49e+000 gpm • • Component Page: 7 Conc. Loading (wt%) (lb/hr) TEG 9.84e+001 4.15e+003 Water 1.50e+000 6.33e+001 Carbon Dioxide 3.44e-011 1.45e-009 Nitrogen 6.92e-014 2.92e-012 Methane 1.17e-017 4.95e-016 Ethane 5.60e-008 2.36e-006 Propane 3.12e-009 1.31e-007 Isobutane 7.95e-010 3.35e-008 n -Butane 9.07e-010 3.82e-008 Isopentane 8.27e-005 3.49e-003 n -Pentane 8.17e-005 3.44e-003 n -Hexane 6.33e-005 2.67e-003 Cyclohexane 9.91e-004 4.18e-002 Other Hexanes 1.48e-004 6.22e-003 Heptanes 1.78e-004 7.51e-003 Methylcyclohexane 2.39e-003 1.O1e--001 2,2,4-Trimethylpentane 1.43e--005 6.04e-004 Benzene 5.64e-003 2.38e-001 Toluene 3.Ole-002 1.27e+000 Ethylbenzene 2.19e-003 9.22e-002 Xylenes 5.01e-002 2.11e+000 C8+ Heavies 3.41e-003 1.44e-001 Total Components 100.00 4.22e+003 RICH GLYCOL AND PUMP GAS STREAM Temperature: 70.00 deg. F Pressure: 1164.70 psia Flow Rate: 8.27e+000 gpm NOTE: Stream has more than one phase. Component Conc. Loading (wt%) (lblhr) TEG 9.06e+001 4.15e+003 Water 3.62e+000 1.66e+002 Carbon Dioxide 5.07e-001 2.32e+001 Nitrogen 5.54e-003 2.53e-001 Methane 3.32e+000 1.52e+002 Ethane 4.52e-001 2.07e+001 Propane 2.21e-001 1.O1e+001 Isobutane 6.35e-002 2.91e+000 n -Butane 7.44e-002 3.41e+000 Isopentane 3.49e-002 1.60e+000 n -Pentane 2.98e-002 1.37e+000 n -Hexane 1.90e-002 8.68e-001 Page: 8 Cyclohexane 3.23e-002 1.48e+000 Other Hexanes 2.47e-002 1.13e+000 Heptanes 4.48e-002 2.05e+000 Methylcyclohexane 6.22e-002 2.85e+000 2,2,4-Trimethylpentane 1.71e-003 7.85e-002 Benzene 1.05e-001 4.81e+000 Toluene 3.54e-001 1.62e+001 Ethylbenzene 1.95e-002 8.92e-001 Xylenes 3.58e-001 1.64e+0131 C8+ Heavies 3.44e-002 1.57e+000 Total Components 100.00 4.58e+003 FLASH TANK OFF GAS STREAM Temperature: Pressure: Flow Rate: 70.00 deg. F 164.70 psia 4.07e+003 scfh Component Conc. Loading (vol%) (lb/hr) Water 1.93e-002 3.72e-002 Carbon. Dioxide 3.84e+000 1.81e+001 Nitrogen 8.30e-002 2.50e-001 Methane 8.70e+001 1.50e+002 Ethane 6.02e+000 1.94e+001 Propane 1.84e+000 8.73e+000 Isobutane 3.65e-001 2.28e+000 n -Butane 3.94e-001 2.45e+000 Isopentane 1.38e-001 1.07e+000 n -Pentane 1.07e-001 8.30e-001 n --Hexane 4.00e-002 3.70e-001 Cyclohexane 2.48e-002 2.24e-001 Other Hexanes 6.19e-002 5.72e-001 Heptanes 4.57e-002 4.91e-001 Methylcyclohexane 3.O1e-002 3.17e-001 2,2,4-Trimethylpentane 2.61e-003 3.19e-002 Benzene 9.89e-003 8.29e-002 Toluene 1.53e-002 1.52e--001 Ethylbenzene 3.70e-004 4.21e-003 Xylenes 4.31e-003 4.91e-002 C8+ Heavies 4.19e-003 7.66e-002 Total Components 100.00 2.05e+002 FLASH TANK GLYCOL STREAM Temperature: 70.00 deg. F Flow Rate: 7.81e+000 gpm Component Conc. Loading (wt%) (lb/hr) • Page: 9 TEG 9.49et001 4.15e+003 Water 3.79e+000 1,66e+002 Carbon Dioxide 1.17e-001 5.11e+000 Nitrogen 8.57e-005 3.75e-003 Methane 5.24e-002 2.29e+000 Ethane 2.86e-002 1.25e+000 Propane 3.21e-002 1.40e+000 Isobutane 1.44e-002 6.29e-001 n -Butane 2.18e-002 9.52e--001 Isopentane 1.21e-002 5.28e-001 n -Pentane 1.22e-002 5.36e-001 n -Hexane 1.14e-002 4.98e-001 Cyclohexane 2.87e-002 1.25e+000 Other Hexanes 1.28e-002 5.58e-001 Heptanes 3.56e-002 1.56e+000 Methylcyclohexane 5.79e-002 2.53e+000 2,2,4-Trimethylpentane 1.06e-003 4.65e-002 Benzene 1.08e-001 4.73e+000 Toluene 3.67e-001 1.60e+001 Ethylbenzene 2.03e-002 8.87e-001 Xylenes 3.74e-001 1.63e+001 C8+ Heavies 3.42e-002 1.50e+000 Total Components 100,00 4.37e+003 FLASH GAS EMISSIONS Control Method: Recycle/recompression Control Efficiency: 100.00 Note: Flash Gas Emissions are zero with the Recycle/recompression control option. REGENERATOR OVERHEADS STREAM Temperature: Pressure: Flow Rate: 212.00 deg. F 14.70 psia 2.46e+003 scfh Component Conc. Loading (vol%) (lb/hr) Water 8.75e+001 1.02e+002 Carbon Dioxide 1.79e+000 5.11e+000 Nitrogen 2.06e-003 3.75e-003 Methane 2.20e+000 2.29e+000 Ethane 6.42e-001 1.25e+000 Propane 4.90e-001 1.40e+000 Isobutane 1.67e-001 6.29e-001 n -Butane 2.53e-001 9.52e-001 Isopentane 1.12e-001 5.25e-001 n -Pentane 1.14e-001 5.32e-001 n -Hexane 8.86e-002 4.96e-001 Cyclohexane 2.22e-001 1.21e+000 Page: 10 Other Hexanes 9.87e-002 5.52e-001 Heptanes 2.38e-001 1.55e+000 Methylcyclohexane 3.82e-001 2.43e+000 2,2,4-Trimethylpentane 6.20e-003 4.59e-002 Benzene 8.86e-001 4.49e+000 Toluene 2.47e+000 1.48e+001 Ethylbenzene 1.15e-001 7.95e-001 Xylenes 2.07e+000 1.42e+001 C8+ Heavies 1.22e-001 1.35e+000 Total Components 100.00 1.57e+002 COMBUSTION DEVICE OFF GAS STREAM Temperature: 1000.00 deg. F Pressure: 14.70 psia Flow Rate: 1.31e+001 scfh Component Conc. Loading (vol%) (lb/hr) Methane 2.06e+001 1.15e-001 Ethane 6.01e+000 6.26e-002 Propane 4.59e+000 7.O1e-002 Isobutane 1.56e+000 3.15e-002 n --Butane 2.37e+000 4.76e-002 Isopentane 1.05e+000 2.62e-002 n -Pentane 1.06e+000 2.66e-002 n -Hexane 8.30e-001 2.48e-002 Cyclohexane 2.08e+000 6.06e-002 Other Hexanes 9.25e-001 2.76e-002 Heptanes 2.23e+000 7.75e-002 Methylcyclohexane 3.57e+000 1.22e-001 2,2,4-Trimethylpentane 5.80e-002 2.30e-003 Benzene 8.29e+000 2.24e-001 Toluene 2.32e+001 7.39e-001 Ethylbenzene 1.08e+000 3.98e-002 Xylenes 1.94e+001 7.12e-001 C8+ Heavies 1.15e+000 6.76e-002 Total Components 100.00 2.48e+000 • • Page: 1 GRI-GLYCalC VERSION 4.0 - SUMMARY OF INPUT VALUES Case Name: Orchard CS - 120 MMSCFD File Name: L:1Datafile\GlyCalc 4.0 Data Eiles\AEC\Orchard Compressor Station 120 MMSCFD.ddf Date: May 06, 2005 DESCRIPTION: Description: EnCana Oil & Gas (USA), Inc. TEG Dehydration Unit Composite Electric (7.5 gpm) 1150 psig / 70F / 120 MMSCFD Annual Hours of Operation: 8760.0 hours/yr WET GAS: Temperature: Pressure: 70.00 deg. F 1150.00 psig Wet Gas Water Content: Saturated Component DRY GAS: Conc. (vol %) Carbon Dioxide 2.0805 Nitrogen 0.0838 Methane 89.5806 Ethane 5.4571 Propane 1.6388 isobutane 0.3223 n -Butane 0.3360 Isopentane 0.1307 n --Pentane 0.0982 n -Hexane 0.0406 Cyclohexane 0.0212 Other Hexanes 0.0617 Heptanes 0.0572 Methylcyclohexane 0.0348 2,2,4-Trimethylpentane 0.0035 Benzene 0.0076 Toluene 0.0147 Ethylbenzene 0.0006 Xylenes 0.0076 C8+ Heavies 0.0232 Flow Rate: 120.0 MMSCF/day Water Content: 5.0 lbs. H20/MMSCF LEAN GLYCOL: Glycol Type: TEG Water Content: Flow Rate: PUMP: 1.5 wt% H2O 7.5 gpm Page: 2 Glycol Pump Type: Gas Injection Gas Injection Pump Volume Ratio: 0.083 acfm gas/gpm glycol FLASH TANK: Flash Control: Recycle/recompression Temperature: 70.0 deg. F Pressure: 150.0 psig REGENERATOR OVERHEADS CONTROL DEVICE: Control Device: Combustion Device Destruction Efficiency: 95.0 % Excess Oxygen: 20.0 % Ambient Air Temperature: 36.0 deg. F • South Parachute 36-24 South Parachute 36-12 Composite Carbon Dioxide 3.0361 1.1248 2.0805 Hydrogen Sulfide 0.0000 0.0000 0.0000 Nitrogen 00716 0.0959 0.0838 Methane 88.8130 90.3481 89.5806 Ethane 5,4561 5.4580 5,4571 Propane 1.5803 1.6972 1.6388 Isobutane 0,3099 0.3346 0.3223 n -Butane 0.3140 0.3579 0.3360 lsopentane 0.1176 0.1438 0.1307 n -Pentane 0.0890 0.1073 0.0982 Cyclopentane 0.0000 0.0000 0.0000 n -Hexane 0.0346 0.0466 0,0406 Cyclohexane 0.0179 0,0245 0.0212 Other Hexanes 0.0526 0.0707 0.0617 Heptanes 0.0393 0.0751 0.0572 Methylcyclohexane 0.0253 0.0443 0.0348 2,2,4 Trimethylpentar 0.0025 0,0044 0.0035 Benzene 0.0072 0.0079 0.0076 Toluene 0.0127 0.0166 0.0147 Ethylbenzene 0.0004 0.0007 0.0006 Xylenes 0.0057 0.0094 0,0076 C8+ Heavies 0.0142 0.0322 0,0232 0 Subtotal 100.0000 100.0000 100.0000 Oxygen 0.0000 0.0000 0.0000 Total 100.0000 100.0000 100.0000 QUESTAR APPLIED TECHNOLOGY 1210 D. Street, Rock Springs, Wyoming 82901 (307) 352-7292 MS ID: Analysis Date/Time: Analyst Initials: Instrument ID: Data File: Date Sampled: Component N/A 5/2/2005 11:34 AST Instrument 1 QPC118.D 4/28/2005 MoI% Description: Field: ML#: GC Method: Methane Ethane Propane Isobutane n -Butane Neopentane lsopentane n -Pentane 2,2-Dimethylbutane 2,3-Dimethylbutane 2-Methylpentane 3-Methylpentane n -Hexane Heptanes Octanes Nonanes Decanes plus Nitrogen Carbon Dioxide Oxygen Total Global Properties Gross BTU/Real CF Sat.Gross BTU/Real CF Gas Compressibility (Z) Specific Gravity Avg Molecular Weight Propane GPM Butane GPM Gasoline GPM 26# Gasoline GPM Total GPM Base MoI% Sample Temperature: Sample Pressure: Hydrogen Sulfide Reviewed By: 90.3481 5.4580 1.6972 0.3346 0.3579 0.0040 0,1398 0.1073 0.0041 0.0125 0.0347 0.0194 0.0466 0.1728 0.0288 0.0135 0.0000 0.0959 1.1248 0.0000 100.0000 Units 1106.6 1088.6 0.9974 0.6334 18.301 0.466610 0.221793 0.212328 0.326922 0.902742 99.773 WL% 79.1983 8.9676 4.0892 1.0625 1.1368 0.0159 0.5510 0.4231 0.0191 0.0586 0.1636 0.0915 0.2195 0.8881 0.1807 0.0828 0.0000 0.1468 2.7049 0.0000 100.0000 South Parachute 36-12 South Parachute 5053 Quesbtex LV% 85.5590 8,1772 2.6143 0.6118 0.6309 0.0086 0.2860 0.2173 0.0095 0.0285 0.0806 0.0443 0.1072 0.3806 0.0810 0.0327 0.0000 0.0588 1.0717 0.0000 100.0000 BTU/SCF at 60°F and14.73 psia BTU/SCF at 60°F and14.73 psia air=1 gm/mole gal/MCF gal/MCF gal/MCF gal/MCF gaIIMCF %v/v 81 °F 378 psig 0.0000 Mole% Component Benzene Toluene Ethylbenzene M&P Xylene O -Xylene 2,2,4-Trimethylpentane Cyclopentane Cyclohexane Methylcyclohexane Description: GRI GlyCalc Information Component Carbon Dioxide Hydrogen Sulfide Nitrogen Methane Ethane Propane Isobutane n -Butane Isopentane n -Pentane Cyclopentane n -Hexane Cyclohexane Other Hexanes Heptanes Methylcyclohexane 2,2,4 Trimethylpentane Benzene Toluene Ethylbenzene Xylenes C8+ Heavies Subtotal Oxygen Total MOI%u 0.0079 0.0166 0.0007 0.0084 0.0010 0.0044 0.0000 0.0245 0.0443 South Parachute 36-12 Wt% 0.0336 0.0838 0.0042 0.0487 0.0059 0.0272 0.0000 0.1125 0.2379 MOI%o Wt% 1.1248 2.7049 0.0000 0.0000 0.0959 0.1468 90.3481 79.1983 5.4580 8.9676 1.6972 4.0892 0.3346 1.0625 0.3579 1.1368 0.1438 0.5669 0.1073 0.4231 0.0000 0.0000 0.0466 0.2195 0.0245 0.1125 0.0707 0.3328 0.0751 0.3931 0.0443 0.2379 0.0044 0.0272 0.0079 0.0336 0.0166 0.0838 0.0007 0.0042 0.0094 0.0546 0.0322 0.2047 100.0000 100.0000 0.0000 0.0000 100.0000 100.0000 LV% 0.0123 0.0311 0.0015 0.0182 0.0022 0.0122 0.0000 0.0465 0.0996 LV% 1.0717 0.0000 0.0588 85.5590 8.1772 2.6143 0.6118 0.6309 0.2946 0.2173 0.0000 0.1072 0.0465 0.1629 0.1789 0.0996 0.0122 0.0123 0.0311 0.0015 0.0204 0.0918 100.0000 0.0000 100.0000 QUESTAR APPLIED TECHNOLOGY 1210 D. Street, Rock. Springs, Wyoming 82901 (307) 352-7292 LIMS ID: Analysis Date/Time: Analyst initials: Instrument ID: Data File: Date Sampled: Component Methane Ethane Propane isobutane n -Butane Neopentane Isopentane n -Pentane 2,2-Dimethylbutane 2,3-Dimethylbutane 2-Methylpentane 3-Methylpentane n -Hexane Heptanes Octanes Nonanes Decanes plus Nitrogen Carbon Dioxide Oxygen Total Global Properties Gross BTU/Real CF Sat.Gross BTU/Real CF Gas Compressibility (Z) Specific Gravity Avg Molecular Weight Propane GPM Butane GPM Gasoline GPM 26# Gasoline GPM Total GPM Base Mol% Sample Temperature: Sample Pressure: Hydrogen Sulfide • Reviewed 8y_ N/A 5/2/2005 12:31 AB K Instrument 1 QPC19.D 4/28/2005 Mal% 88.8130 5.4561 1.5803 0.3099 0.3140 0.0035 0.1141 0.0890 0.0032 0.0092 0.0261 0.0141 0.0346 0.1049 0.0125 0.0078 0.0000 0.0716 3.0361 0.0000 100.0000 Units 1077.7 1060.2 0.9974 0.6455 18.649 0.434471 0.199922 0.152484 0.252263 0.787882 99.830 Description: Field: ML#: GC Method: Wt% 76.4026 8.7976 3.7369 0.9660 0.9785 0.0137 0.4413 0.3445 0.0147 0.0427 0.1207 0.0652 0.1599 0.5220 0.0749 0.0462 0.0000 0.1076 7.1650 0.0000 100.0000 South Parachute 36-24 South Parachute 5056 Quesbtex LV% 84.3830 8.2014 2.4424 0.5686 0.5552 0.0076 0.2342 0.1809 0.0075 0.0212 0.0608 0.0323 0.0798 0.2261 0.0343 0.0185 0.0000 0.0440 2.9022 0.0000 100.0000 BTU/SCF at 60°F and14.73 psia BTU/SCF at 60°F and14.73 psia air=1 gm/mole gal/MCF gaI/MCF gal/MCF gal/MCF gal/MCF %vly 54 °F 180 psig 0.0000 Mole% Component Mol% Wt% LV% Benzene 0.0072 0.0300 0.0112 Toluene 0.0127 0.0628 0.0239 Ethylbenzene 0.0004 0.0021 0.0008 M&P Xylene 0.0051 0.0293 0.0112 O -Xylene 0.0006 0.0033 0.0012 2,2,4-Trimethylpentane 0.0025 0.0151 0.0069 Cyclopentane 0.0000 0.0000 0.0000 Cyclohexane 0.0179 0.0809 0.0342 Methylcyclohexane 0.0253 0.1330 0.0569 Description: South Parachute 36-24 GRI GIyCalc Information Component MoI% Wt% LV% Carbon Dioxide 3,0361 7.1650 2.9022 Hydrogen Sulfide 0.0000 0.0000 0.0000 Nitrogen 0.0716 0,1076 0.0440 Methane 88.8130 76.4026 84.3830 Ethane 5.4661 8.7976 8.2014 Propane 1.5803 3.7369 2.4424 Isobutane 0.3099 0.9660 0.5686 n -Butane 0.3140 0.9785 0.5552 Isopentane 0.1176 0.4550 0.2418 n -Pentane 0.0890 0.3445 0.1809 Cyclopentane 0.0000 0.0000 0.0000 n -Hexane 0.0346 0.1599 0.0798 Cyclohexane 0.0179 0.0809 0.0342 Other Hexanes 0.0526 0.2433 0.1218 Heptanes 0.0393 0.2002 0.0930 Methylcyclohexane 0.0253 0.1330 0.0569 2,2,4 Trimethylpentane 0.0025 0.0151 0.0069 Benzene 0.0072 0.0300 0.0112 Toluene 0.0127 0.0628 0.0239 Ethylbenzene 0.0004 0.0021 0.0008 Xylenes 0.0057 0.0326 0.0124 C8+ Heavies 0.0142 0.0864 0.0396 Subtotal 100.0000 100.0000 100.0000 Oxygen 0.0000 0.0000 0.0000 Total 100.0000 100.0000 100.0000 • • Company Name: EnCana Oil & Gas (USA) Inc. Field Name: Facility flame: Orchard Unit Orchard Compressor Station Fu a itives Emission Calculation Date: 51612005 Equipment Leak Emission Estimates for Oil and Gas Production Operations (Emission Factors Derived From Table 2-4. EPA -453/R-95.017. 'Protocol for Equipment Leak emersion Estimates", November 1995) Component Type Equipment Service Category Gas pearhrrcempunensl Heavy 01l3 (s20 API Gravity) nwmrnriea+nparv.ra1 Light 011 (a20 API Gravity) liesihritewnpowail Water/Light O(I'f {m*h,n<o,..pnaenit Connectors 4.41E-04 1.65E-05 4.63E-14 2.43E-14 Flanges 8.80E-04 8.60E-07 2.43E-04 6.39E-06 Open-ended Lines 4.41E-03 3.09E-14 7,45E-05 3.09E-03 2.87E-42 5.51E-04 5.29E-05 Pumps 5.29E-03 Valves 9.92E-03 1.85E-05 5.51E-03 2.16E-04 Other` 1 94E-02 7.05E-05 _ 1.65E-02 3.09E-02 - Al rectors are for total Pepsin compound emission rates (includes ren-VGC's err cI as methane and alhaney. 1 - "Caner equipment type include* cornpressers, pressure relief valves, relief valves., sesperems, drains, dump arm*. hatches, instruments. meters, polished rods and vents. 2 - Watertight 00 racbrs apply** water streams in oil service with a water content greeter than 50% to le 33 NWT 99Yu. For Mains wills water Centonl greeter than 9991., Nie emission rate is considered neglpahh. 3 • The emission factor ror pumps was not derived in the actual protocol, the taller for "other' has been substituted be compteterns* INPUTS: 1. List the quantity of each type of component in each type of service at the applicant's facility Component Type Equipment Service Category Gas Heavy Oil (t20 API Gravity) Light 011 (>20 API Gravity) Water/Light Oil Connectors 190 0 127 0 Flanges 95 0 63 0 Open-ended Lines a 0 0 0 Pumps 0 0 2 0 Valves 150 _ 0 100 0 Other 15 0 10 0 Sample Calculation: TOC (TPY) = component quantity * component factor a 8,760 hr/yr • 1 ton/2,000 Ib.s VOC (TPY) TOC a VOC Fraction from gas analysis Component Type Equipment Service Category Gas (TPY of TOC) Heavy Oil (s20 API Gravity) (TPY of TOC) Light 011 (>20 API Gravity) (TPY of TOG) WaterlLight Oil (TPY of TOC) Connectors 0.366934 0.0ov100 0.256856 0 0000C Flanges 0.357763 ✓3.000000 0.067272 0.0000130 Open-ended Lines 0.000003 000-0000 0.000 00 0.000000 Pumps 0.000000 0.000000 0.251002 _ 0 000CM) Valves 5.517966 0 0^X000 2.41400:0000000 - Other 1.274646 0.000030 0.724223 0.000000 TOTAL t 8.517308 0.000000 3.713503 0.0100000 Volume % VOC Fraction 0.15 Estimated Emissions 0.00 1.00 0.00 1.28 0.00 3.71 0.00 TPY VOC 0.29 0.00 0.85 0.00 LbslHr VOC Combined Total 4.99 TPY VOC Requested Emissions LesairEnvironrnental. inc. www.{esair.coin 1.14 LbslHr VOC Combined Total 5,50 TPY VOC 1.26 LbsIHr VOC • Company Name: EnCana Oil & Gas (USA) Inc. Date: 5/6/2005 Field: Orchard Unit Facility Name: Orchard Compressor Station Emission Calculation for External Combustion Sources AP -42 Calculation Method (For Estimating Emissions, Using Emission Factors from EPA AP -42, Table 1.4-1 and Table 1.4-2) Burner Data Reference No. Bumer Rating (MMBtu/Hry ' Equipment Annual — Op Time (hours) Fuel Type Fuel Htg Value (Btuiscf) ` Fraction of VOC T 009 0.650 Reb©iler 8760 Field 1000 0.10 7.6 11.0 1.1 1 - Fraction of VOC is derive om the fuel gas analysis (MUVWQJMWToTAL Emission Factors Reference No. Burner Rating (MMBtu/Hr) Emission Factors NOx (Lbifv4MFt') CO (Lb/MMFt) SO2 (Lb/MMFI) PM (Lb/MMFI )' TOC I (Lb1MMFt°) VOC S (Lb/MMFt' , 009 0.650 100.0 84.0 0.6 7.6 11.0 1.1 EF Source AP -42 AP -42 AP -42 AP -42 AP -42 2 Estimate 2- Total Organic Compunds (TOC) 3 - VOC emission factor determined by taking TOC factor times fraction of fuel gas that was VOC. Emissions (LbfKr) = E.F. (LbIMMMMfft')' FHVf1000' Burner Rating (MNibtufHr)* 11FHV (btufscf) ` 1 MNMft311,000,000 ft3 * 1,000,000 Btu1N1Mb- Emissions (TPY) = Emissions (Lb/lir) * Annual Operating Time (lirNr)' 1 ton/2,000 Lb Source Emissions Reference No. 009 NOx (Lb/Hr) TPY) 0.07 0.28 CO (Lb/Hr) l (TPY) 0.05 0.24 Source Emissions SO2 (Lb/Hr) 1 (TPY) 000 0.00 PM (Lb/ Hr) (TPY) 0.00 0.02 voc (Lb/Hr) (TPY} 0.00 0.00 LesaitEnvironmentat, inc. www.iesair.com • N • (<1 C l6 • Date: 5/6/2005 0 4 D EnCana Oil & Gas Orchard Unit tri 0) V) 0 C? (1) a C cn u) ctx 0 E v U L L D 0) as E; Z ai c 0Z ,M E t7 N CU .0 CU NOTE: Composite Wet Gas Analysis from Orchard Wells 0 0 Ca C7 ID h coCm3 CO er) t N m C3 C3 4 C3 LO N 03 CV CO CO 0 oCO N O) r 0 o r U co C3 0 ' 0 0 0) (0 co r Lo l` N 07 0 0 C3 CO LO C3 In C N CO CO 03 d ID 0 d 0 d 0 41 0 2 C o co co co so ‘4.% C7r C7 C3 C3 CJ C4] (i7 C.3 (-4 CS - Q7 l[7 .- 0 0 C7 6 0 C7 CO d m 0 a. E 0 0 cv 2 4- _ d 2 0) _ CO X 0 2 5 CO 0 M1 SD CO Q 0 m d to G 0 0 0) co w 1, o g cd 0 e6 4-C r+ {a 0 t6 r w y C 2 O = ci ,1 > z 3 u 0 0 0 •"= fi u a G C a. U7 `47, tom? 0) E LL LL LL L7 C p 4 U C9 (i) 0 0) --3 PERMIT NO: 05GA0242 DRAFT PERMIT INITIAL APPROVAL DATE ISSUED: ISSUED TO; ENCANA OIL & GAS (USA), INC. THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS: Natural gas gathering facility, known as the Orchard Compressor Station, located in the NW `/. of Section 34, T7S R96W, in Garfield County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Glycol Dehydration system, using TEG with a total capacity of up to 120 MMSCF per day, natural gas fired reboilers, equipped with electric glycol pumps and associated still -vent. Flash tank emissions are routed to the fuel system. Still -vent emissions are muted to condensers and then either to a vapor recovery unit, or and thermal oxidizer. These emission units remove water from natural pipeline gas to 7.0 pounds of water per million scf. THIS PERMIT IS GRANTED SUBJECT TO ALL RULES AND REGULATIONS OF THE COLORADO AIR QUALITY CONTROL COMMISSION AND THE COLORADO ALR POLLUTION PREVENTION AND CONTROL ACT C.R.S. (25-7-101 et TO THOSE GENERAL TERMS AND CONDITIONS INCLUDED IN THIS DOCUMENT AND THE FOLLOWING SPECIFIC TERMS AND CONDITIONS: 1. Visible emissions shall not exceed twenty percent (20%) opacity during normal operation of the source. During periods of startup, process modification, or adjustment of control equipment visible emissions shall not exceed 30% opacity for more than six minutes in any sixty consecutive minutes. Opacity shall be measured by using EPA Method 9. (Reference: Regulation No. 1, Section ILA. 1. & 4.) 2. The permit number shall be marked on the subject equipment for ease of identification. (Reference: Regulation No. 3, Part B, 111.E.) (State only enforceable) 3. Emissions of air pollutants shall not exceed the following limitations (as calculated in the Division's preliminary analysis: (Reference: Regulation No. 3, Part 13, II.A.4). Nitrogen Oxides: «Fieldl3» tons per year and «Field14» pounds per month Volatile Organic Compounds: 11.0 tons per year and 1,868.5 pounds per month Carbon Monoxide. «Fieldl7» tons per year and «Fieldl$» pounds per month Monthly limits are based on a 31 -day month. Note: NOx and CO emissions assume the use of a thermal oxidizer. During the first twelve (12) months of operation, compliance with both the monthly and yearly emission limitations shall be required. After the first twelve (12) months of operation, compliance with only the yearly limitation shall be required. Compliance with the synthetic minor status of this facility shall be determined by recording the facility's annual permitted criteria pollutant emissions, (including all HAPs above the de-minimis reporting level) from each emission unit, on a rolling (12) month total. By the end of each month a new twelve-month total is calculated based on the previous twelve months' data The permit holder shall calculate monthly emissions and keep a compliance record on site, or at a local field office with site responsibility, for Division review. This rolling twelve-month total shall apply to all emission units, requiring an APEN, at this facility. The processing of natural gas through a glycol dehydrator reboiler indicated above will produce Hazardous Air Pollutant (HAP) emissions. This information is listed to infonn the operator of the Division's analysis of the specific compounds. These emissions are surnrnarized in the notes. 4. This source shall be limited to a maximum processing and/or consumption rate as listed below and all other activities, operational rates and numbers of equipment as stated in the application. Monthly records of the actual consumption rate shall be maintained by the applicant and made available to the Division for inspection upon request. (Reference: Regulation No. 3, Part B, II.A.4) Natural gas throughput shall not exceed 3,720.0 million scf per month and 43,800 million scf per year. AIRS ID: 045/0895/001 Page I of 4 Colorado Department of Public H int Air Poll DRAFT on PERMIT ENCANA OIL & GAS (USA), INC. Permit No. 05GA0242 INITIAL APPROVAL During the first twelve (12) calendar months of operation, compliance with both the monthly and yearly consumption limitations shall be required. After the first twelve (12) calendar months of operation, compliance with only the yearly limitation shall be required. Compliance with the yearly consumption limits shall be determined on a rolling twelve (12) calendar month total. By the end of each calendar month, a new twelve-month total shall be calculated, based on the previous. twelve calendar months' data. The permit holder shall calculate calendar monthly emissions and keep a compliance record on site or at a local field office with site responsibility, for Division review. 5. This source shall be limited to a maximum lean glycol recirculation pump rate as listed below and all other activities, operational rates and numbers of equipment as stated in the application. Annual records of the actual pump rate shall be maintained by the applicant and made available to the Division for inspection upon request. (Reference: Regulation No. 3, Part B, The maximum pumping rate of lean glycol shall not exceed 7.5 gallons per minute (a pump stroke correlation can be used). 6. Monthly emissions shall be calculated using GR1 GlyCalc Version 4.0 or newer, to demonstrate compliance with the emission limits in this permit, as outlined in Condition No. 3. The GRI GlyCalc input parameters shall include, but not be limited to the following: Actual lean glycol pump rate; Actual natural gas processing rate; and The latest available processing gas analysis data. Records of the calculated emissions shall be maintained and made available to the Division for inspection upon request. • 7. Operating Permit (OP) requirements shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit limitation. Any relaxation that increases the potential to emit above the applicable OP threshold shall require submittal of and issuance of an operating permit, under Regulation No. 3, Part C. 8. An operating and maintenance plan, including manufacturer's operating parameters, along with a proposed recordkeeping format, that outlines how the applicant will maintain compliance, on an ongoing basis with the requirements of this permit, shall be submitted for approval by the Division before final approval. Monthly records shall be maintained by the applicant and made available to the Division for inspection upon request. (Reference: Regulation No. 3, Part 8, III G.7) 9. A revised Air Pollutant Emission Notice (APEN) shall be filed. (Reference: Regulation No_ 3, Part A [LC) a. Annually whenever a significant increase in emissions occurs as follows: For any criteria pollutant: For sources emitting less than 100 tons per year, a change in actual emissions of five (5) tons per year or more, above the level reported on the last APEN; or For any non -criteria reportable pollutant: If there is an emissions increase by 50% or five (5) tons per year, whichever is less, above the level reported on the last APEN submitted to the Division. b. Whenever there is a change in the owner or operator of any facility, process, or activity; or c. Whenever new control equipment is installed, or whenever a different type of control equipment replaces an existing type of control equipment; or d. Whenever a permit limitation must be modified; or e. No later than 30 days before the existing APEN expires. 10. This source is subject to the odor requirements of Regulation No. 2. (State only enforceable) 11. The manufacturer model number and serial number of the subject equipment shall be provided to the Division every year, if they have changed. (Reference: Regulation No. 3, Part B, AIRS ID; 045/0895/001 Page 2 of 4 Colorado Department of Public H :nt Air Poll DRAFT on PERMIT ENCANA OIL & GAS (USA), INC. Permit No. 05GA0242 INITIAL APPROVAL 12. Within one hundred and eighty days (180) after commencement of operation, compliance with the conditions contained on this permit shall be demonstrated to the Division. It is the permittee's responsibility to self certifies compliance with the conditions. Failure to demonstrate compliance within 180 days may result in revocation of the permit. 13. This permit shall expire if the owner or operator of the source for which this permit was issued: (i) does not commence construction/modification or operation of this source within 18 months after either, the date of issuance of this initial approval permit or the date on which such construction or activity was scheduled to commence as set forth in the permit application associated with this permit; (ii) discontinues construction for a period of eighteen months or more; (iii) does not complete construction within a reasonable time of the estimated completion date(See General Condition No. 6., Item 1.). The Division may grant extensions of the deadline per Regulation No. 3, Part 8, f.F.4.b. (Reference: Regulation No. 3, Part B, 111.F.4) By: By: Poul E. Paulsen R K Hancock III, P.E. Permit Engineer Unit Leader Notes to Permit Holder. 1) The production or raw material processing limits and emission limits contained in this permit are based on the production/processing rates requested in the permit application. These limits may be revised upon request of the permittee providing there is no exceedance of any specific emission control regulation or any ambient air quality standard. A revised air pollution emission notice (APEN) and application form must be submitted with a request for a permit revision. 2) This source is subject to the Common Provisions Regulation Part II, Subpart E, Upset Conditions and Breakdowns. The permittee shall notify the Division of any upset condition which causes a violation of any emission limit or limits stated in this permit as soon as possible, but no later than two (2) hours after the start of the next working day, followed by written notice to the Division explaining the cause of the occurrence and that proper action has been or is being taken to correct the conditions causing said violation and to prevent such excess emission in the future. 3) The following emissions of non -criteria reportable air pollutants are estimated based upon the throughput as indicated in this permit. This information is listed to inform the operator of the Division's analysis of the specific compounds. This information is listed on the Division's emission inventory system. C.A.S. # SUBSTANCE EMISSIONS fLBJYRI 71-43-2 Benzene 1,970 108-88-3 Toluene 6,475 1330-20-7 Xylene (isomers and mixture) 6,240 4) The emission levels contained in this permit are based on information provided in the application and the GRI GlyCalc model. 5) In accordance with C.R.S. 25-7-114.1, the Air Pollutant Emission Notice (APEN) associated with this permit is valid for a term of five (5) years. The first expiration date for the five (5) year term for this APEN expires on May 10, 2010. A revised APEN shall be submitted no later than 30 days before the five (5) year term expires. 6) This application is classified as a: Synthetic minor source for operating permit applicability, and AIRS ID: 045/0895/001 Page 3 of 4 S ENCANA OIL & GAS (USA), INC. Permit No. 05GA0242 INITIAL APPROVAL • • Colorado Department of Public H Air Poll DRAFT PERMIT :nt on GENERAL TERMS AND CONDITIONS: (IMPORTANT! READ ITEMS 5.6.7 AND 8) 1. This permit is issued in reliance upon the accuracy and completeness of information supplied by the applicant and is conditioned upon conduct of the activity, or construction, installation and operation of the source, in accordance with this information and with representations made by the applicant or applicant's agents. It is valid only for the equipment and operations or activity specifically identified on the permit. 2. Unless specifically stated otherwise, the general and specific conditions contained in this permit have been determined by the APCD to be necessary to assure compliance with the provisions of Section 25-7-114.5(7Xa), C.R.S. 3. Each and every condition of this permit is a material part hereof and is not severable. Any challenge to or appeal of, a condition hereof shall constitute a rejection of the entire permit and upon such occurrence, this permit shall be deemed denied ab initio. This permit may be revoked at any time prior to final approval by the Air Pollution Control Division (APCD) on grounds set forth in the Colorado Air Quality Control Act and regulations of the Air Quality Control Commission (AQCC), including failure to meet any express term or condition of the permit. If the Division denies a permit, conditions imposed upon a permit are contested by the applicant, or the Division revokes a permit, the applicant or owner or operator of a source may request a hearing before the AQCC for review of the Division's action. 4. This permit and any required attachments must be retained and made available for inspection upon request at the location set forth herein. With respect to a portable source that is moved to a new location, a copy of the Relocation Notice (required by law to be submitted to the APCD whenever a portable source is relocated) should be attached to this permit. The permit may be reissued to a new owner by the APCD as provided in AQCC Regulation No. 3, Part B, Section 11.11 upon a request for transfer of ownership and the submittal of a revised APEN and the required fee. 5. Issuance (initial approval) of an emission permit does not provide "final" authority for this activity or operation of this source. Final approval of the permit must be secured from the APCD in writing in accordance with the provisions of 25-7-114.5(12Xa) C.R.S. and AQCC Regulation No. 3, Part 13, Section 111.G. Final approval cannot be granted until the operation or activity commences and has been verified by the APCD as conforming in all respects with the conditions of the permit. If the APCD so determines, it will provide written documentation of such final approval, which does constitute "final" authority to operate. Compliance with the permit conditions must be demonstrated within 180 days after commencement of operation. 6. THIS PERMIT AUTOMATICALLY EXPIRES IF you (1) do not commence construction or operation within 18 months after either the date of issuance of this permit or the date on which such construction or activity was scheduled to commence as set forth in the permit, whichever is later, (2) discontinue construction for a period of 18 months or more; or (3) do not complete construction within a reasonable time of the estimated completion date. Extensions of the expiration date may be granted by the APCD upon a showing of good cause by the permittee prior to the expiration date. 7. YOU MUST notify the APCD at least thirty days (fifteen days for portable sources) prior to commencement of the permitted operation or activity. Failure to do so is a violation of Section 25-7- 114.5(12Xa), C.R.S. and AQCC Regulation No. 3, Part B, Section 111.0.1., and can result in the revocation of the permit. You must demonstrate compliance with the permit conditions within 180 days after commencement of operation as stated in condition 5. 8. Section 25-7-114.7(2Xa), C.R.S. requires that all sources required to file an Air Pollution Emission Notice (APEN) must pay an annual fee 10 cover the costs of inspections and administration_ If a source or activity is to be discontinued, the owner must notify the Division in writing requesting a cancellation of the permit. Upon notification, annual fee billing will terminate_ 9. Violation of the terms of a permit or of the provisions of the Colorado Air Pollution Prevention and control Act or the regulations of the AQCC may result in administrative, civil or criminal enforcement actions under Sections 25-7-115 (enforcement), -121 (injunctions), -122 (civil penalties), -122.1 (criminal penalties), C.R.S 1. AIRS ID: 045/0895/001 Page 4 of 4 ENCNA_ May 5, 2005 MAY 1 1 2005 Air Pollution Control Division 4300 Cherry Creek Drive South, APCD-SS-B 1 Denver, Colorado 80246-1530 RE: Application 120 MIVISCFD TEG Dehydration Unit Fugitive Emissions Orchard Compressor Station, Garfield County EnCana Oil & Gas (USA) Inc. Dear Sir or Madam: EnCana Oil & Gas (USA) Inc. 370 17°1 Street Suite 1700 I}enver CO USA $0202 tel: (303) 623-2300 fax: (303) 623-2400 sew.eacatia.iu EnCana Oil & Gas (USA), Inc. (EnCana), is submitting the enclosed permit application for the above listed equipment to be located at the Orchard Compressor Station. This facility is currently in the design phase. As such the configuration of dehydration units may vary. EnCana is requesting the capability of installing any number of different size units to achieve up to 120 MMSCFD of throughput, The dehydration unit(s) will be controlled with a common control system consisting of one or more combustors. The flash tank vapors will be used as system fuel. Emissions from the dehydration unit(s) were estimated using a composite wet gas analysis from the Orchard field and GRI-GLYCa1c version 4.0. Uncontrolled emissions are estimated to be 201 TPY of VOCs and 152 TPY of total HAPS. Controlled emissions are 11.0 TPY of VOCs and 8.0 TPY of total HAPS with the control efficiency being 95%. Fugitive emission calculations are based on an estimated component count. The emissions have been modified from the original submittal to account for additional dehydration units at the facility. Enclosed with this documentation are the APEN's and the associated APEN filing fee of $239.92. Also included is a copy of the notice of start-up. The original has been submitted under a separate cover letter. • May 19, 2005 Mr. Rick Hillier EnCana Oil & Gas (USA), Inc. 370 171' Street, Suite 1 700 Denver, CO 80202 Dear Mr. Hillier: ONMENTAL, Enclosed is documentation for your files to show that the methanol storage tank located at the Orchard Compressor Station has emissions below the APEN filing threshold for the State of Colorado. Methanol is a BIN C reportable HAP and an APEN is required if the source emits more than 1,000 pounds per year of the pollutant. Based on the annual throughput of 54,750.0 gallons per year and the EPA Tanks 4.0 model this tank emits approximately 543.4 pounds per year of methanol and is therefore, APEN exempt. Please file this documentation appropriately. Sincerely, Denise R. Kohtala Lesair Environmental, Inc. Enclosures • 10394 W. Chatfield Ave., Ste. 1 00, Littleton, Colorado 801 27 TANKS 4.0 • CA L] CO ++'C CO cl) E e_)T a co LL c co CLI it E i y E " . m use 0 L N CI. 03 0 L Cc Q _a 4 L7 v J+70 " C U 1:3C sa 4 El C F- O C Q y 001 R 0 CO US Gf7 2 roti} v v ?H_oQ c ..0 ' 0 3 Vr oo�0 0 ktsCi 0 00 L:J CD %5 Ce c fl. C cV V co r- co o O O Ci 6 y 06-9 26 E Nrr CO fi E E O 0) W 03 CD U o i0 O C L) oteowava _ �� L z C7 C7 Ci L') Cl c y Emissions E C 10) -,7_-• .. co.mOf 2 H L6 C PR CO R 7 i 0 co as o C E _-- m 01 m m 0 03 Q+ c 03 C w o a y 'C = 0 ,c O ••C 0 H e 0 Y o �: _� r 3(41..0., g r I m e= C .ob r '.' PO-0sv rn m u a c`s u m co D t 3 46 - `m2 crya+Q- l6 es .0000 >ECD 0 +A ._ A� 0> m O L it 7 D m +' . O O w m +r.. ro c0Ocn0i-O cuuo�47F- Z °� rf1U99Cc o -ICl !>Q ar iri1- a CC m 2 5/17/2005 9:03:01 AM TANKS 4.0 • g -g .04 Option 2: R a a ALL cr .171 d Molhyi alcohol 5/17/2005 9:03:01 AM • Q aa ca ca 44-0 F X0 re rs u a) a) as E li 0 l c C '0 0 E —• Z t ce To c -c9 Q • `a ▪ c E w Annual Emissions Report 4.7 0 J 0 a ,N E W 0 w CA 0 to 5/17/2005 9:03:01 AM 111 & Gas (145:4) Inc. - s rynit Compressor Site l ZTl Sect on 27 R967i; P li: • Covnty, Colorado -2uuMh.wese Come Seclin 27 Iv1�ct2 .a�um.:c;c) 1„..e. HORIZONTAL SCALE %n b 11 Al SCALE CERTIFICATE THS IS TO CERTIFY THAT THE = , IIMICNIN04911d, RREPARED FRc4 FIELD NOTES 5 d SYY 1.1E CP. UNDER MY DIRECT SLIE`,.ild.r3 .14 SAME ARE TRUE ANC CORRECT if W+F IEST •OF ATIA.O «c4V_=CCE AND BELIEF • la f 30125 . Y Prupursu 0.34 W,U pal i S. Y. T St &e L and Suri y .,, nsr. Ina \ (435:.'x; - 250I 10O ',4 ORM VERNAL AVE yERN.AL, uTAtl 34073 caroREsKr A 1 B 1 = b • NORThI COLLECTOR PIR ORAN ROOK IXi115F11N GNARL PERLEM OF %EH SIZE aY NOBHf INTERMETJMTE ROOT DYENSIT)IS {TN. 0R 4EHy 150 1.5- 00-100 .75' (25 .2.5' >15 24 LESM <15 150 4191 0-5 200 KV „•' CTOR PIPE KO( [RADOM r 1145 SHEET) 1,12 PIPE - .,.)RATED N 132800 14 1324E0 5590.5 1Y PROVIO'x BY TRI-STATE StiRVEIING. SHOWN ARE TO TOP OF flNIS4450 SURFACING. NO FILL SLOPES ARE 2:1 UNLESS NOTE) CT1ERWISt 1R TO ENSURE ACCf55 R0040 INTERCEPTS SURFACE CFAJMAGE 114 4N0 DIRECTS IT AWAY FRO4 PROCESS AREA. NR TO PROVIDE UTIIJTY LOCATES PRR3R TO COMMENCING TpN ACTIVITIES. GER 2445 SHALL15 LOCBEATE INLET Mb OUTLET GAS ONES NCH. NG SC10O FOR ACTWL LOCATIO ARE S:I4INAR! T1E5 ARE 02V£NPE7 PARALLEA. 112 THE EAST WO *EST UNES 0 20 60 AR 120 SCA_F-: 1•=40 TITLE OL&CAS INC. . COMPRESSOR STATION SITE GRADING PLAN REFERENCEURA4VINOS A 11E4 2 B H 92'-9 C7N1R CTCR- 54•-0" a6' -a" 2 N1 TITLE PROJECT NO , aL & GAS INC. 5023.01 ZD COMPRESSOR STATION DRAWING NUMBER { IL ARRANGEMENT Sa 1. xa G-100 �' a REFERENCE DRAWINGS RE+ J1 I te.,7",Rr OS/S .._ 7S+. ti ir • • if 00°' Via I 6005 M ,.9G .5 „801- 'N „6 ,6e M96 'SL 'LZ MS/9S a uotlels iossaaduaaj plegoi r t ,5 0 i ie 0 0 tL1 ----._`: 1 1 \;." \fr \'''' 111 icy fd . --9-7 // I Ko r- • • • • LEGAL DESCRIPTION 1A parcel of land located in the ' W `/4 of Section 2 Township 7 South. Range 96 West of the 6th Principal Meridian, Garfield County, Colorado. The said parcel of land being more particularly described as follows and shown on Exhibit "A" attached hereto TOWNSHIP 7 SOUTH, RANGE 96 WEST, 6TH P.M. Section =?: Beginning at a point in the!_'/4ti W'/4 of said Section 2- which bears 77°40'08" West, a distance of 922.46 feet from the South 1/4 Corner of said Section 27, (being a 1982 aluminum cap); Thence South 88°40'01" West, a distance of 400.00 feet; Thence North 01°19'27" West, a distance of 653.41 feet; Thence North 88°40'01" East, a distance of 400.00 feet; Thence South 01°19'27" East, a distance of 653.41 feet to the Point of Beginning. Basis of bearings is the South line of the SW'/4 of said Section 27 which is taken from global positioning satellite observations to bear North 89°28'22" East, a measured distance of 2,595.40 feet, (the Southwest Corner of said Section 27, being a 1982 aluminum cap). Containing 6.00 acres, more or less. SURFACE LEASE AGREEMENT FOR AND IN CONSIDERATION OF TEN DOLLARS ($10.00) and other good and valuable 1 consideration, the receipt and sufficiency is hereby acknowledged, this day of May, 2005, WILLIAM IL PATTERSON, RODNEY C. POWER, RONALD E. TIPPING and MARIE I E. TIPPING, ("Lessor") hereby lease, unto ENCANA OIL & GAS (USA) INC. ("Lessee"), its successors and assigns, a certain tract of land or parcel of land located in the County of Garfield, State of Colorado ("Premises"), more particularly described as follows: A parcel of land located in the SF'14S;W'/ of Section 27r Township 7 South, Range 96 West of$he 611` Principal Meridian, Garfield County, Colorado. The said parcel of land being more ,particularly described as follows and shown on Exhibit "A" attached hereto TOWNSHIP 7 SOUTH. RANGE 96 WEST. 6TH P.M. Section g: Beginning at a point in the SE,V, W`/a of said Section 27, which bears North, 77°40'08" West, a distance of 922.46 feet from the South 1/4 Corner of said Section 27, (being a 1982 aluminum cap); Thence South 88°40'01" West, a distance of 400.00 feet; Thence North 01°19'27" West, a distance of 653.41 feet; Thence North 88°40'01" East, a distance of 400.00 feet; Thence South 01°19'27" East, a distance of 653.41 feet to the Point of Beginning. Basis of bearings is the South line of the SW'l of said Section 27 which is taken from global positioning satellite observations to bear North 89°28'22" East, a measured distance of 2,595.40 feet, (the Southwest Corner of said Section 27, being a 1982 aluminum cap). Containing 6.00 acres, more or less. l , Roadway: included with the lease of the Premises, Lessee shall be entitled to the use of an existing access road Sixteen (16) feet in width Shat extends from the county road (Uno Road alkla County Road #300) now located westerly of the Premises, to the Premises. During the term of this Lease, jhe surface of said existing road will be maintained at the sole cost and expense of the Lessee. 2. Use of Premises: Lessee shall have the right to use the Premises primarily for the - construction and placement of one or more compressors with related storage tanks, valves, metering house, and related equipment necessary for the operation of the compressors and compression of natural gas for the operations of Lessee._Lessee shall also have the right to use the Premises for a conditioning facility plant with related dehydration equipment, storage tanks, valves, separators and the equipment necessary for the operation of the treatment of natural gas. Lessee agrees to keep equipment and materials stored on the land of Lessor in neat and orderly condition. l Deleted: rich Deleted: s l Deleted: N Delete: 34 Deleted: - Deleted:. . 34 [feted: NW Kreleted: Deleted: 34 i Deleted: south Deleted: ....together with the right of ingress and egress to and from the Premises for the uses and term hereinafter set forth. Formatted: Indent: Left. 0', Hanging: 0.5", Tabs: 0.5", List tab + Not at 0.25" Deleted: extending Deleted: T Fonnatte: Indent: Left: 0', Hanging: 0.5", Tabs: 0.5", List tab + Not at 0.25" 1 3. • 1 • Term.: This lease shall commence on the above date and shall continue so long as the - Premises are used by Lessee, its successors and assigns, for the purposes herein stated. Lessee may terminate this lease at any time by providing Lessor with (90) ninety days' prior written notice, and in such event, Lessee shall have no further obligations hereunder except the obligation to remove the equipment and restore the surface. 4. Rental: Lessee shall pay or tender to Lessor an annual rental of twelve thousand five hundred dollars ($12,500.00)An,or before,each anniversary date of this lease. It is agreed that any payment hereunder may be made ,to ,Rodney C. Power, for the benefit of all Lessors, at the address listed below, and Lessee shall have no liability_ to the other Lessors for such payment. 5. Title Transfer. No change in ownership of the Premises shall be binding on Lessee unless and until it shall have first been furnished a copy of the recorded conveyance effecting such transfer of title. 6. Full Use and Enjoyment: Lessee shall have the full use and enjoyment of said lands for the purposes described herein. 7. Inspection: Lessor reserves and shall at all times have the right to enter the premises to inspect the same.[ 8. Indemnity of Lessee: Except for any claims arising out of or due to acts or omissions of Lessor, Lessee shall indemnify and hold Lessor harmless against and from all claims arising from Lessee's use of the,fremises. 9. Termination of Lease: Upon termination of this Lease, Lessee shall remove all compressors, structures, pipes, tanks and other equipment, materials and supplies placed upon the premises. 10. Notices: All notices and demands, which may or are to be required or permitted to be given by either party to the other hereunder, shall be in writing. All Lessors hereby appoint Rodney C. Power, as their agent for receipt of notices and receipt of rental payments. All notices and demands shall be sent by United States mail, certified, return receipt requested, postage prepaid, addressed as follows: Lessor: Mr. Rodney C. Power P. O. Box 1329 Grand Junction, CO 81502 Lessee: EnCana Oil & Gas (USA) Inc. 370 17th Street Suite 1700 Denver, CO 80202 Attention: Land Department Formatted: Indent: Left: 0", Hanging: 0.5-, Tabs: 0.5", List tab + Not at 0.25" Deleted: commencing Deleted: the date of execution hereof and Deleted; en Deleted directly D eleted: Lessor D eleted: Tipping Comment Idil: I would have taken this out. This provision is usually for inspection of a building that is under lease. [Deleted; p - - ( Deleted: Tipping 1 Deleted: Tipping • • • All notices and demands given hereunder shall be considered to be given and delivered upon deposit in the United States mail as herein provided. 11. Memo of Lease Recorded: A Memorandum of this Lease may be recorded by the parties, and, if recorded, Lessee covenants and agrees to record a release within thirty (30) days following the termination of the Lease. 12. Governing Law: This Lease shall be governed by the laws of the State of Colorado. IN WITNESS WHEREOF, the parties have set their hands on the day and year first written above. By: LESSEE: ENCANA OIL & GAS (USA) INC. Joel S. Fox, Attorney -in -Fact LESSOR: William R. Patterson Rodney C. Power Ronald E. Tipping Marie E. Tipping ACKNOWLEDGEMENTS STATE OF COLORADO ) )§ CITY AND COUNTY OF DENVER) On this day of May, 2005, before me personally appeared Joel S. Fox, known to me to be the Attorney -in -Fact of ENCANA Oil & Gas (USA) Inc. and he acknowledge that he executed the within and foregoing instrument, and acknowledged the said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein set forth. IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the day and year first above written My Commission Expires: Notary Public: 4 Formatted: Font: 18 pt Deleted: rch STATE OF COLORADO SCOUNTY OF MESA The foregoing instrument was acknowledged before me this day of Max, 2005, by [Deleted; rth William R. Patterson, an individual IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the day and year first above written. My Commission Expires: Notary Public: STATE OF COLORADO 41) COUNTY OF MESA ) )§ The foregoing instrument was acknowledged before me this day of Max, 2005, by Rodney C. Power, an individual IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the day and year first above written. My Commission Expires: Notary Public: ( Deleted: rch • STATE OF COLORADO COUNTY OF MESA The foregoing instrument was acknowledged before me this day of May, 2005, by Ronald E. Tipping and Marie E. Tipping, individually and as husband and wife. IN WITNESS WHEREOF, I have hereunto set my hand and affixed my official seal the day and year first above written. My Commission Expires: Notary Public: 6 [Deleted: rcb 1 Page 1 of 1 Subj: Mineral Owners Date: 5/20/2005 7:29:34 AM Mountain Standard Time From: dennishansen@bresnan.net To: Jwsmith1951@aol.com Sent from the Internet (Details) Jimmy, upon reviewing the drilling title opinion. The Mineral Ownership is the same as the Surface Ownership on county parcel 108, ( the 6 acre site). It is as follows: William R. Patterson--- 60% 668 26 Road Grand Junction, CO 8150E Rodney C. Power 20% P. 0. Box 1329 Grand Junction, CO 81502 Ronald E. Tipping and Marie E. Tipping 20% 1967 Broadway Grand Junction, CO 81503 /'l Mere&/ cv.ve, e L%S/`r/p I will fax you over this part of the title opinion for your files. If you should need anything else, please don't hesitate to call me. 40 Dennis • Friday, May 20, 2005 America Online: Jwsmith1951 MAY -20-05 07:32 AM DENNIS D. HANSEN 970 245 4357 I To. ice. f pool. Fal N. EnCana Oil & Gas (USA) inc. TO264 3 February 8,, 2005 5-z e I olpha-derlr i * `;it, 141.0e-835-00135 Fro - _. Phone a Fax MINERALS Parcel 108 - A!t c+f thc_sthii c41_ld,_enccut Paled J7 anglnt my 1 o:1 jQ Owjrer Interest L William R. Patterson 60% 1 Rodney C. Power 20% 1 Ronald E. Tipping and Maric E. Tipping, joint tenants 20% 1 ParceliOppreXintate.ly041Leresi» nottlwestsorner of N'W'/NWA,.,krcejjon 34 Owner Interest Lou William R. Patterson 40% 1 Heirs or devisees of William E. Foster 20% None Warren E. Gardner 2O% None Ronald P. Tipping and Maric E. Tipping, joint tenants 20"/� 1 jw.ounty Road 300 • Part lying in jziL1 Section D. and 1,94 4 S ctinn 34 Owner Garfield County, Colorado Interest Leak 100% None OIL AND GAS LEASEHOLD parcel ! QB - All aft 5;I,)7,]ecl lolls except Parcel 107 and County RQi4300 Working Net Revenue Interest Interest Lease I:ncana Oil & Gas (USA) Inc. 100.000000% 15.000000% WI IWt; 100% WI x i00%MI) (NRI: 100% WI x IQO%MI x 85% NRI -W1) William R. Patterson 9.000000% ROY 1 INItI: 60% Mix 15'/ ROY] Rodney C. Power 3.000000% ROY 1 [NRI; 20% MI x 13% ROY} Ronald E. Tipping and Marie E. Tipping, joint tenants 3.000000% ROY 1 INRI: 20% MI x 15% ROY] Totals 100.000000% 100.000000% 5 P_01 SURFACE OWNERS 1. William R. Patterson 668 26 Road Grand Junction, CO 81506 2. Rodney C. Power P.O. Box 1329 Grand Junction, CO 81502 3. Ronald E. Tipping and Marie E. Tipping 1967 Broadway Grand Junction, CO 81503 4. Bud Strong Family, LLC P.O. Box 264 Carbondale, CO 81623 5. Union Pacific Railroad Company 1800 Farmam Street Omaha, NE 68102 MINERAL OWNERS 1. William R. Patterson 668 26 Road Grand Junction, CO 81506 2. Rodney C. Power P.O. Box 1329 Grand Junction, CO 81502 3. Ronald E. Tipping and Marie E. Tipping 1967 Broadway Grand Junction, CO 81503 EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES CIVIL/STRUCTURAL ASTM D1238 ACI 117 ACI 301 ACI 302 ACI 304 ACI 305 ACI 306 ACI 308 ACI 309 ACI 318 ACI 347 ACI 530 ACI SP -66 AISC 316 AISC 326 ANSIIASTM A184 ANSI/ASTM A185 ANSI/ASTM A496 ANSI/ASTM A497 ANSIIASTM A82 ANSIIASTM D1751 ANSI/ASTM D1752 ANSIIASTM D994 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer. Standard Specification for Tolerances for Concrete Construction and Materials Specifications for Structural Concrete Guide for Concrete Floor and Slab Construction Guide for Measuring, Mixing, Transporting and Placing Concrete Hot Weather Concreting Cold Weather Concreting Standard Practice for Curing Concrete Guide for Consolidation of Concrete Building Code Requirements for Reinforced Concrete Guide to Formwork for Concrete Building Code Requirements for Masonry Structures American Concrete Institute — Detailing Manual Manual of Steel Construction Detailing for Steel Construction Welded Deformed Steel Bar Mats for Concrete Reinforcement Steel Welded Wire Reinforcement, Plain, for Concrete Steel Deformed, Wire for Concrete Reinforcement Steel Welded Wire Reinforcement, Deformed, for Concrete Steel Wire, Plain, for Concrete Reinforcement Preformed Expansion Joint Filler for Concrete Paving and Structural Construction (Nonextruding and Resilient Bituminous Types) Preformed Sponge Rubber, Cork and Recycled PVC Expansion Joint Fillers for Concrete Paving and Structural Construction Preformed Expansion Joint Filler for Concrete (Bituminous Type) 1:Orchard Una Compressor Ssation\C I OORE V$1REFCODES.dne Page 1 EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES ANSIIAWS D1.4 Structural Welding Code - Reinforcing Steel ASTM 108 Steel Bar, Carbon and Alloy, Cold -Finished ASTM A1008 Steel, Sheet and Strip, Cold -Rolled, Carbon, Structural, High - Strength Low -Alloy and High -Strength Low -Alloy with Improved Formability ASTM A1011 Steel, Sheet and Strip, Hot -Rolled, Carbon, Structural, High - Strength Low -Alloy and High -Strength Low -Alloy with Improved Formability ASTM A123 Zinc (Hot -Dipped Galvanized) Coatings on Iron and Steel Products ASTM A153 Zinc Coating (Hot -Dip) on Iron and Steel Hardware ASTM A242 High -Strength Low -Alloy Structural Steel ASTM A283 Low and Intermediate Tensile Strength Carbon Steel Plates ASTM A307 Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength ASTM A325 Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength ASTM A36 Carbon Structural Steel ASTM A490 Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength ASTM A500 Cold -Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes ASTM A501 Hot -Formed Welded and Seamless Carbon Steel Structural Tubing ASTM A53 Pipe, Steel, Black and Hot -Dipped, Zinc -Coated, Welded and Seamless ASTM A563 Carbon and Alloy Steel Nuts ASTM A568 Steel, Sheet, Carbon, Structural and High -Strength, Low -Alloy, Hot -Rolled and Cold -Rolled General Requirements ASTM A572 High -Strength, Low -Alloy, Columbium -Vanadium Structural Steel ASTM A588 High Strength Low Alloy Structural Steel with 50 ksi Minimum Yield Point to 4 in. Thick ASTM A6 General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling [:10tchud Unit Comte Stauon\CIOOREVB\REFCODES.doc Page 2 • • • EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES ASTM A615 Deformed and Plain Carbon Steel Bars for Concrete Reinforcement ASTM A704 Welded Steel Plain Bar or Rod Mats for Concrete Reinforcement ASTM A706 Low -Alloy Steel Deformed and Plain Bars for Concrete Reinforcement ASTM A780 Repair of Damaged and Uncoated Areas of Hot -Dip Galvanized Coatings ASTM A82 Steel Wire, Plain, for Concrete Reinforcement ASTM A992 Structural Steel Shapes ASTM A996 Rail -Steel and Axle -Steel Deformed Bars for Concrete Reinforcement ASTM C109 Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2 in. or SOmm Cube Specimens) ASTM C136 Test Method for Sieve Analysis for Fine and Coarse Aggregates ASTM C144 Aggregate for Masonry Mortar. ASTM C150 Portland Cement ASTM 0171 Sheet Materials for Curing Concrete ASTM C172 Standard Practice for Sampling Freshly Mixed Concrete ASTM C207 Hydrated lime for Masonry Purposes. ASTM C260 Air -Entraining Admixtures for Concrete ASTM C270 Mortar for Unit Masonry. ASTM C31 Mixing and Curing Concrete Test Specimens in the Field ASTM C33 Concrete Aggregates ASTM C330 Lightweight Aggregates for Structural Concrete ASTM C39 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens ASTM C404 Aggregates for Masonry Grout ASTM C476 Grout for Masonry ASTM C494 Chemicals Admixtures for Concrete ASTM C5 Quicklime for Structural Purposes. ASTM C618 Coal Fly Ash and Raw or Calcinated Natural Pozzolan for Use in Concrete I:IOrchard Unit Compressor Station\C1Q RE\B\REFCDDES.doc Page 3 • EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES ASTM C684 Standard Test Method for Making, Accelerated Curing, and Testing Concrete Compression Test Specimens ASTM C90 Loadbearing Concrete Masonry Units. ASTM C94 Ready -Mixed Concrete ASTM D1004 Test Method for Tear Resistance (Graves Tear) of Plastic Film and Sheeting. ASTM D1149 Test Method for Rubber Deterioration - Surface Ozone Cracking in a Chamber. ASTM D 1204 Test Method for Linear Dimensional Changes of Nonrigid Thermoplastic Sheeting or Film at Elevated Temperature. ASTM D1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer. ASTM D1505 Test Method for Density of Plastics by the Density -Gradient Technique. ASTM D1556 Test Method for Density and Unit Weight of Soil in Place by the Sand -Cone Method • ASTM D1557 Test Methods for Laboratory compaction Characteristics of Soil Using Modified Effort (56,000 ft-lbflft3) ASTM D1593 Nonrigid Vinyl Chloride Plastic Film and Sheeting. ASTM D1603 Test Method for Carbon Black in Olefin Plastics. ASTM D1693 Test Method for Environmental Stress -Cracking of Ethylene Plastics, ASTM D 1822 Test Method for Tensile -Impact Energy to Break Plastics and Electrical Insulating Materials. ASTM D2922 Test Methods for Density of Soil and Soil -Aggregate in Place by Nuclear Methods (Shallow Depth) ASTM D3370 Practices for Sampling Water from Closed Conduits. ASTM D3895 Test Method for Oxidative -Induction Time of Polyolefins by Differential Scanning Calorimetry. ASTM D413 Test Methods for Rubber Property - Adhesion to Flexible Substrate. ASTM 134218 Test Method for Determination of Carbon Black Content in Polyethylene Compounds by the Muffle -Furnace Technique. ASTM D4254 Test Methods for Minimum Index Density and Unit Weight of • Soils and Calculation of Relative Density 1. K rthard Unit Compressor StetionT I DoE VBIREFCODES.doe Page 4 EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES ASTM D4354 Practice for Sampling of Geosynthetics for Testing. ASTM D4437 Practice for Determining the Integrity of Field Seams Used in Joining Flexible Polymeric Sheet Geomembranes. ASTM D4491 Test Method for Water Permeability of Geotextiles by Permittivity. ASTM D4533 Test Method for Index Trapezoidal Tearing Strength of Geotextiles. ASTM D4632 Test Method for Grab Breaking Load and Elongation of Geotextiles. ASTM D4716 Test Method for Determining the (In -Plane) Flow Rate per Unit Width and Hydraulic Transmissivity of a Geosynthetic Using a Constant Head. ASTM D4751 Standard Test Method for Determining Apparent Opening Size of a Geotextile. ASTM D4759 Test Method for Determining the Specifications Conformance of Geosynthetics. ASTM D4833 Test Method for Index Puncture Resistance of Geotextiles, Geomembranes, and Related Products. ASTM D4885 Test Method for Determining Performance Strength of Geomembranes by the Wide Strip Tensile Method. ASTM D5035 Standard Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method). ASTM D5199 Test Method for Measuring Nominal Thickness of Geosynthetics. ASTM D5261 Test Method for Measuring Mass per Unit Area of Geotextiles. ASTM D5323 Practice for Determination of 2% Secant Modulus for Polyethylene Geomembranes ASTM D5397 Test Method for Evaluation of Stress Crack Resistance of Polyolefin Geomembranes Using Notched Constant Tensile Load Test. ASTM D5596 Test Method For Microscopic Evaluation of the Dispersion of Carbon Black in Polyolefin Geosynthetics. ASTM D5617 Test Method for Multi -Axial Tension Test for Geosynthetics. ASTM D570 Method for Water Absorption of Plastics. ASTM D5721 Practice for Air -Oven Aging of Polyolefin Geomembranes. 1.19rchard Unit Compressor Static i C I WREVB1REFC©DES.doc Page 5 EnCana Oil & Gas (USA) Inc. SE Project 4107-01 • SPECIFICATION REFERENCE APPLICATIONS AND CODES ASTM D5741 Practice for Geomembrane Seam Evaluation by Vacuum Chamber. ASTM D5820 Practice for Pressurized Air Channel Evaluation of Dual Seamed Geomembranes. ASTM D5885 Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High -Pressure Differential Scanning Calorimetry. ASTM D6365 Practice for the Nondestructive Testing of Geomembrane Seams Using the Spark Test. ASTM D638 Test Method for Tensile Properties of Plastic ASTM D6392 Test Method for Determining the Integrity of Nonreinforced Geomembrane Seams Produced Using Thermo -Fusion Methods. ASTM D6693 Test Method for Determining Tensile Properties of Nonreinforced Polyethylene and Nonreinforced Flexible Polypropylene Geomembranes. ASTM D696 Test Method for Coefficient of Linear Thermal Expansion of • Plastics Between -30°C and 30°C with a Vitreous Silica Dilatometer. ASTM D698 Test Methods for Laboratory Compaction Characteristics of Soils Using Standard Effort (12,400 ft-lbf/ft3) ASTM D746 Test Method for Brittleness Temperature of Plastics and Elastomers by Impact. ASTM D751 Test Methods for Coated Fabrics. ASTM D792 Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement. ASTM D882 Test Method for Tensile Properties of Thin Plastic Sheeting. ASTM F436 Hardened Steel Washers ASTM F959 Compressible, Washer -Type Direct Tension Indicators for Use with Structural Fasteners AWS A2.4 Standard Welding Symbols AWS D1.1 Structural Welding Code CRSI Concrete Reinforcing Steel Institute Manual of Practice GRI GM 10 Specification for Stress Crack Resistance of HDPE Geomembrane Sheet. • l:\Orchard Unit Compressor Station\C 144REVBIREFCODES.doc Page 6 EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES GRI GM 13 GRI GM 14 GRI GM 6 GRIGM9 IMIAC SSPC MECHANICAL SSPC SSPC NACE ELECTRICAL ANSI ANSI B31.8 ANSI Z55.1 ANSI/IEEE 24 ANSI/IEEE 37.20 ANSIIIEEE C57,12.00 ANSI/IEEE C57.12.10 ANSI/IEEE C57.12.13 ANSIIIEEE C57.12.90 API Test Properties, Testing Frequency and Recommended Warranty for High Density Polyethylene (HDPE) Smooth and Textured Geomembranes, Test Frequencies for Destructive SeamTesting. Pressurized Air Channel Test for Dual Seamed Geomembranes. Cold Weather Seaming of Geomembranes. International Masonry Industry All -Weather Council: Recommended Practices and Guide Specification for Cold Weather Masonry Construction. Steel Structures Painting Council Steel Structures Painting Council Manual -Volumes 1 and 2. Visual Standard for Abrasive Blast Cleaned Steel - VIS 1-89. National Association of Corrosion Engineer TPC Publication No, 2. (SERIES C) American National Standards Institute Piping Design and Testing Gray Finishes for Industrial Apparatus and Equipment Performance Characteristics and Dimensions for Outdoor Apparatus Bushings. Switchgear assemblies, including Metal Enclosed Bus Standard General Requirements for Liquid -Immersed Distribution, Power, and Regulating Transformers Safety Requirements 230 kV and Below, 833/958 through 8333/10,417 kVA, Single Phase, and 750/862 through 60,000/80,000/100,000 kVA, Three Phase Conformance Standard for Liquid -Filled Transformers used in Unit Installations including Unit Substations Standard Test Code for Liquid -Immersed Distribution, Power, and Regulating Transformers; and Guide for Short -Circuit Testing of Distribution and Power Transformers American Petroleum Institute, RP 540 ['Orchard Unit Compressor Station \CIOOREVB\REFCDDES.doc Page 7 EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES API American Petroleum Institute — Specification 11P ASME Section IX Welding and Brazing Qualifications ASME Section VIII, American Society of Mechanical Engineers Boiler and Pressure Div. 1 Vessel Code Boiler and Pressure Vessel Code (hereafter referred to as the Code) ASTM American Society for Testing and Materials AWS DI.1 American Welding Society Structural Welding Code — Steel B16.11 Forged Steel Fittings, Socket -Welding and Threaded B16.5 Steel Pipe Flanges and Flanged Fittings FAA Federal Aviation Administration, U.S. Department of Transportation FM Factory Mutual ICEA Insulated Cable Engineer's Association IEEE Institute of Electrical and Electronic Engineers IEEE 48 Test Procedures and Requirements for High -Voltage AC Cable • Terminations IEEE C37.13 LV AC PCB Used in Enclosures IES Illuminating Engineering Society IGCI Industrial Gas Cleaning Institute IPCEA Insulated Power Cable Engineers Assoc. ISA Instrument Society of America NACE National Association of Corrosion Engineers NBFU National Board of Fire Underwriters NEC National Electrical Code, NFPA 70 NEMA National Electrical Manufacturers Association NEMA 250 Type 2 Enclosures for Electrical Equipment NEMA ABI Molded Case Circuit Breakers NEMA MGI Induction Motors NESC National Electrical Safety Code NFPA 70 National Fire Protection Association OSHA Occupational Safety and health Act 29 CFR 1900 through 1910 SSPC Steel Structures Painting Council 14h -chard Unit compressor Station \CI REVB3.EFCODES doe Page 8 • EnCana Oil & Gas (USA) Inc. SE Project 4107-01 SPECIFICATION REFERENCE APPLICATIONS AND CODES UBC Uniform Building Code UL Underwriters Laboratories UL 845 Safety for Motor Control Centers PIPING ANSI American National Standards Institute API American Petroleum Institute ASME B31.3 Chemical Plant and Petroleum Refinery Piping ASME B31.8 Gas Transmission and Distribution Piping Systems ASTM American Society for Testing and Materials AWWA American Water Works Association FM Factory Mutual NACE National Association of Corrosion Engineer, TPC Publication. No. 2 SSPC Steel Structures Painting Council Manual, Volumes 1 and 2 4111 SSPC Visual Standards for Abrasive Blast Cleaned Steel, VIS 1-89 • I:\Orchard Unit Compressor 5tationlCIOOREVBIREFCODES.dot Page 9 Samuel Engineering, Inc. We Provide Salluriorrs 5775 DTC Boulevard, Suite 200 Englewood, Colorado 80111-3227 CONSTRUCTION SPECIFICATION SPECIFICATION 01055 SITE SURVEY FOR EnCana 011 & Gas (USA) Inc. Orchard Compressor Project Project No.: 5023-01 Orig./Lead Eng.: f Date Project Engineer Approval: Date Project Manager Approval: Date Client Approval: Date Tel: 303-714-4840 Fax: 720-482-8327 Rev. No. 0 By Revisions Issued for Construction Approval Date Engineering • Project Controls • Estimating • Construction Management ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 01055 SITE SURVEY REV. DATE: MARCH 15, 2005, PAGE 1 PART 1 - GENERAL 1.1 SECTION INCLUDES A. Requirements for a survey meeting current accuracy standards jointly adopted by ALTA, ACSM and NSPS. 1.2 LOCATION A. A. The the area to be surveyed located in the NW `/a of Section 34. T 7 S. R 96 W, 6tn P.M., Garfield County, Colorado. B. The area to be surveyed is bounded by the dimensions shown on Drawing C-001 1.2 REFERENCE STANDARDS A. ALTA American Land Title Association B. ACSM American Congress on Surveying & Mapping C. NSPS National Society of Professional Surveyors 1.3 QUALITY ASSURANCE A. Qualifications 1. Employ a Land Surveyor licensed in the State of Colorado. 1.4 SUBMITTALS A. Submit name, address, telephone number and license number of Surveyor before commencing work. B. On request, submit documentation verifying accuracy of survey work. PART 2 - EXECUTION 2.1 PROJECT RECORD DOCUMENTS A. Maintain a complete and accurate log of control and survey work as it progresses. B. Prepare a certified survey illustrating dimensions, locations, angles and elevations of existing topographic features, utilities and construction. 2.2 EXAMINATION I.lQrcnard Unit Compressor Station\CtOOREV5\O1O55SiteSurvey doe REVISION 0 SE Samuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 01055 SITE SURVEY REV. DATE: MARCH 15, 2005, PAGE 2 A. Verify locations of survey control points prior to commencing work. B. Promptly notify the Engineer of any discrepancies discovered. 23 SURVEY REFERENCE POINTS A. Contractor to locate and protect survey control and reference points. B. Control datum for survey is from local survey datum previously established by Tri State Surveying. 2.4 SURVEY REQUIREMENTS A. Provide field surveying services and utilize recognized survey practices. B. Establish adequate localized control points to be used for construction staking on site, referenced to existing control points. Record locations, with horizontal and vertical data, on the Project Record Documents. C. Identify and obtain the locations and elevations of all existing topographic features, structures and facilities within the area to be surveyed including, but not limited to, the checked items shown in Table A. D. Accuracy shall be in accordance with "Accuracy Standards for ALTA -AGSM Land Title Surveys." E. Provide staked locations of the soil borings shown on Drawing C-001 2.5 SURVEY SUBMITTALS A. Provide a 3-dimensional, AutoCAD file of the survey information for the area shown on Drawing C-001. Topography shall be provided with 1 -foot contour interval and 5 -foot index contour intervals. I lOrchard Unit Compressor Station\C1OOREVD O1O55SiteSurvey.doc REVISION 0 0 Samuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 01055 SITE SURVEY REV. DATE: MARCH 15, 2005, PAGE 3 TABLE A OPTIONAL SURVEY RESPONSIBILITIES AND SPECIFICATIONS NOTE: The items of Table A must be negotiated between the surveyor and client. It may be necessary for the surveyor to qualify or expand upon the description of these items, e.g. in reference to Item 6, there may be a need for an interpretation of a restriction. The surveyor cannot make a certification on the basis of an interpretation. If checked, the following optional items are to be included in the survey: 1. Monuments placed (or a reference monument or witness to the corner) at all major corners of the boundary of the property, unless already marked or referenced by an existing monument or witness to the comer. 2. ❑ Vicinity map showing the property surveyed in reference to nearby highway(s) or major street intersection(s). 3. Flood zone designation (with proper annotation based on Federal Flood Insurance Rate Maps or the state or local equivalent, by scaled map location and graphic plotting only). 6. ❑ Land area as specified by the client. Contours and the datum of the elevations. Identify and show if possible, setback, height, and floor space area restrictions of record or disclosed by applicable zoning or building codes (in addition to those recorded in subdivision maps). If none, so state. 7. ❑ (a) Exterior dimensions of all buildings at ground level. (b) Square footage of: ❑ (1) exterior footprint of all buildings at ground level. ❑ (2) gross floor area of all buildings; or (3) other areas to be defined by the client (C) Measured height of all buildings above grade at a defined location. If no defined location is provided, the point of measurement shall be shown. 8. ❑ Substantial, visible improvements (in addition to buildings) such as signs, parking areas or structures, swimming pools, etc. 9. Parking areas and, if striped, the striping and the type (e.g. handicapped. 1i3Orcriard Unit Compressor Station1C1OCREVB161055SiteSurvey do7c REVISION 0 Samuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 01056 SITE SURVEY REV. DATE: MARCH 15, 2005, PAGE 4 10. 11. Farl ►1 motorcycle, regular, etc.) and number of parking spaces. Indication of access to a public way such as curb cuts and driveways. Location of utilities (representative examples of which are shown below) existing on or serving the surveyed property as deterrnined by: (a) Observed evidence (b) Observed evidence together with plans and markings provided by client, utility companies, and other appropriate sources (with reference as to the source of information) • railroad tracks and sidings; • manholes, catch basins, valve vaults or other surface indications of subterranean uses; • wires and cables (including their function) crossing the surveyed premises, all poles on or within ten feet of the surveyed premises, and the dimensions of all crosswires or overhangs affecting the surveyed premises; and • utility company installations on the surveyed premises. 12. ❑ Governmental Agency survey -related requirements as specified by the client. 13. [] Names of adjoining owners of platted lands. 14. 11 Observable evidence of earth moving work, building construction or building additions within recent months. 1. 1 1 Any changes in street right of way lines either completed or proposed, and available from the controlling jurisdiction. Observable evidence of recent street or sidewalk construction or repairs. 16. ❑ Observable evidence of site use as a solid waste dump, sump or sanitary landfill. END 1:1OrchardUri CornpressorSta[ion1C100REVB101055StteSurvey.doc REVISION 0 SE) Samuel Engineering, Inc. Samuel Engineering, inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Englewood, Colorado 80111-3227 Orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 02010 SUBSURFACE SOILS INVESTIGATION FOR EnCana Oil & Gas (USA) Inc. Orchard Compressor Project Project No.: 5023-01 Date Date Date Date Tel: 303.714.4840 Fax: 720.482.8327 Rev. No. 0 By Revisions Issued for Construction Approval Date Engineering • Project Controls • Estimating • Construction Management ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 02010 SUBSURFACE SOIL INVESTIGATION REV. DATE: MARCH 15, 2005, PAGE 1 PART 1 - GENERAL A. As herein stated the term "Contractor" shall mean the Geotechnical/Soils consultant; the term "Engineer" shall mean Samuel Engineering, Inc. and the term "Owner" shall mean EnCana Oil & Gas (USA) Inc. B. The Contractor shall furnish all labor, equipment, materials and supplies required to drill borings, dig test pits, and obtain soil samples in order to supply the subsurface information required as specified herein, per attached Drawing No. C-001. C. In regard to technical aspects of the work, the Engineer will be the Owner's representative and will have the sole authorization to make changes to the Scope of Work. D. Information relating to the accessibility of boring and pit locations, the nature of the terrain, availability and terms for obtaining water, and all other conditions affecting the work shall be obtained by the Contractor prior to commencement of the work. E. Right of Entry to each required boring or pit location shall be coordinated with the Engineer on behalf of the Owner prior to commencement of boring at that location. F. The Contractor shall fill or otherwise plug the upper part of each boring upon completion of work in each area except when specifically instrueted to leave a boring open. In addition, each work area shall be cleaned and left in a safe condition. PART 2 - PROJECT DESCRIPTION A. The plant site is located in the NW '/d of Section 34, T 7 S. R 96 W, 6th P.M., Garfield County, Colorado. B. The project consists of the addition of a new compressor station. The gas compressor packages are skidded, weigh approximately 563 kips and have an approximate overall footprint of 36 feet by 60 feet. They will be housed in an approximate 85 foot by 200 foot long pre-engineered building. Other equipment includes tanks, transformers, generators, scrubbers and pumps. PART 3 - EXECUTION A. The purpose of this investigation is to obtain samples, test and evaluate the geotechnical conditions in the proposed project area. The Scope of Work shall include but not necessarily be limited to the following: l:lOrchard Unit Compressor StatiorACIOOREV8102O1OSubsurfaceSoilsInvestigation doc REVISION 0 SE Samuel Engineering, Inc. We Provide .Sof ,UionS ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 02010 SUBSURFACE SOIL INVESTIGATION REV. DATE: MARCH 15, 2005, PAGE 2 1. Test borings are required in the locations shown on the accompanying Drawing No. C-001. The actual location and ground surface elevation of each borehole shall be determined and recorded by the Contractor. In order to obtain a more thorough investigation of the site soil conditions, additional borings may be drilled, or test pits excavated, upon recommendation by the Contractor and approval by the Engineer. 2. All borings shall be drilled to a minimum depth of 30 feet or 2.5 feet into bedrock, whichever occurs first. The right is reserved by the Engineer to increase the depth of drilling in overburden to 35 feet without an increase of unit costs. Overburden shall refer to any unconsolidated materials lying above bedrock and shall include natural soil formations and fill, all rubble, stones, or material that can be broken or displaced by driving or light blasting. Rock shall refer to bedrock and large sections of rock or boulders in which core boring is necessary. 3. Soil samples shall be obtained by dry sampling methods at intervals not to exceed 3 feet for the first 10 feet and a maximum of 5 feet intervals thereafter. The Contractor as part of this contract shall provide penetration resistance records and ground water observations in overburden. The Contractor in accordance with generally accepted standards practiced within the Geotechnical Engineering Profession shall perform the borings and sample service. 4. The testing program shall utilize the standard methods for the soils encountered to evaluate the strength, resistivity, classify the soils and verify any expansive properties. 5. In addition to the above, a reconnaissance of the project site shall be performed by the Contractor to determine possible sources of gravel for road base aggregate, concrete aggregates, rock for erosion control, and suitability of existing soils for use as fill material and beneath foundations. 6. Upon completion of the test work, the Contractor shall provide the Engineer with three copies of the soils report for the project site. As a minimum the report shall include, but not be limited to the following: a Provide recommendations for type of foundation system to be utilized for the various structures and provide the relevant soils properties for use in design of those systems. When several foundation systems are equally suited for the proposed structures, relevant soils properties for use in design for each of the suitable systems shall be provided. b A site plan providing locations of soil borings and test pits along with surface elevations. i:lOrchard Unit Compressor Slation1C1O0REVB102010SubsurtaceSoilslnvestigatian.doc REVISION Samuel Engineering, Inc. We Prnvide Solutions ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 02010 SUBSURFACE SOIL INVESTIGATION REV. DATE: MARCH 15, 2005, PAGE 3 c Logs of all soil borings. d Conclusions of the testing program for soils or rock encountered, regarding soil properties and groundwater conditions. e An evaluation of site seismology to include the risk of future rupture and recommendations of earthquake design parameters. f An evaluation of dewatering methods (techniques) that may be useful/required during excavation, construction and for permanent installation. Backfill material shall meet the following corrosion requirements: a. Resistivity: 1,000 OHM centimeters (minimum) (CALIF. DOT 643) pH 4.5 to 9.5 (CALIF. DOT 643) Chlorides 200 ppm (maximum) (CALIF. DOT 422) Sulfates 1,000 ppm (maximum) (CALIF. DOT 417) b. Materials not conforming to these specifications shall not be used without the consent of the Engineer. c. If no suitable backfill material exists on the site following a visual inspection, the Engineer shall be notified by the Contractor prior to demobilization from the site, and other suitable areas delineated after consultation between the Engineer and the Contractor. 8. The report shall provide the following parameters for design as a minimum: a. Allowable soils bearing pressure - qa (ksf) for both soils and bedrock. The report shall clearly state whether the allowable bearing pressure is gross or net. b. Local frost depth and ground water table if encountered. c. Predicted water level rise in the future. d. Suggested foundation depth from finished grade. e. Ground water aggressiveness toward concrete and steel. Suggestions for concrete and steel protection. k:1Orchard Unit Compressor Station1C400itEV13t42050Su4surfaoeSoilsfravestwgetion.doc REVISION 0 SE Samuel Engineering, inc. We Provrde Solutions ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR PROJECT PROJECT NO.: 5023-01 f. g• CONSTRUCTION SPECIFICATION 02010 SUBSURFACE SOIL INVESTIGATION REV. DATE: MARCH 15, 2005, PAGE 4 Coefficients of passive pressure - Kp, and of active pressure — Ka. Soils unit weight - (pounds per cubic foot). h. Angle of internal friction. i. Compaction requirements and expected density for any fills. j. Soil cohesion - c (pounds per square foot). k. Modulus of subgrade reaction - Ks (pounds per cubic foot). 1. Estimated settlement of proposed foundations - h (inches). m. Allowable velocity of run-off flows on site surface soils. n. Soil properties for dynamic analysis - for example, dynamic shear modulus and Poisons ratio. END 1.10rchar0 Unit Compressor Station1C100REVB1020105ubsurfaceSoil$Investlgation.doc REVISION 0 SE Samuel Engineering, Inc. We Provide Soiarians Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Tel: 303--7144840 Englewood, Colorado 80111-3227 Fax: 720-482-8327 orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 02221 EXCAVATION FOR EncCana Oil & Gas (USA) Inc. Orchard Compressor Station Project No.: 5023-01 Date Date Date Date Rev. No. By Revisions Approval Date 0 DJB Issued for Construction Engineering t Project Controls ♦ Estimating • Construction Management ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02221 ORCHARD COMPRESSOR STATION EXCAVATION PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 1 • PART 1 - GENERAL 1.1 SECTION INCLUDES A. Excavation for site grading. B. Excavation for roads and drainage. C. Excavation for building foundations. D. Excavation for equipment foundations. E. Excavation to underside of pier caps. F. Removal from site, stockpiling, or placing excavated material in fill areas. G. Removal of top soil. 1.2 RELATED SECTIONS A. Specification 02223 — Backfilling. PART 2 - PRODUCTS • 2.1 MATERIAL • A. Top Soil: Soil containing organic material and debris, Unless otherwise directed by the Engineer, the top soil is classified as the top 6 inches of soil. PART 3 - EXECUTION 3.1 PREPARATION A. The Contractor is responsible for laying out and staking all work from base lines and survey reference points established by the Engineer. B. The Contractor is responsible for staking known existing underground utilities. C. Protect above and below grade utilities which are to remain. D. Protect plant life and other features remaining as a portion of the final landscaping. E. Protect bench marks, structures, fencing, paving, and curbs from damage during the excavation process. (:\Orchard Unit Corepressor SIation1C100REVB102221Excavation.doc REVISION 0 SE Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02221 ORCHARD COMPRESSOR STATION EXCAVATION PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 2 F Prior to commencing excavation, the Engineer shall specify whether the material to be excavated will be removed from site, stockpiled, or placed in fill sections. G. Top soil shall be removed from the area prior to the commencement of excavation. H. The accuracy of all work, other than control established by the Engineer, shall be the responsibility of the Contractor. The Contractor shall employ a qualified surveyor acceptable to the Engineer, plus survey crew members to lay out the work and establish all lines, levels and grades as may be required. Complete records of all field work shall be kept by the Contractor in accordance with good survey practice, and in standard field books. Field books shall be available to the Engineer upon completion of the work. Application for permission to bring explosives onto the site or any part of the Owner's property shall be submitted to the Owner in writing by the Contractor and shall provide the following information: 1. Details and location of work where explosives are proposed to be used. 2. The location of proposed explosives, magazines and the maximum quantity and types of explosives to be stored. 3. Copies of current licenses and permits required by Government and other authorities. 4. Security during transport to site as directed by local Government. J. The Contractor shall store explosives in an approved magazine, within a curbed area as directed by the Owner. 3.2 TOP SOIL REMOVAL A. Top soils shall be removed from all areas designated on the drawings and all other areas being subsequently excavated, filled, paved or concreted. B. Top soil shall be stockpiled in a designated area on site, or removed from site as designated by the Engineer. 3.3 TOLERANCES A. Finish surfaces under gravel and bedding material shall be within 0.1 foot. B. Finish surfaces directly under aggregate base shall be finished to a tolerance of minus 1 -inch to plus zero -inch. I.IOrchard Unit Compressor StatiorilC100REVB102221Escavation:doc REVISION 0 Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02221 ORCHARD COMPRESSOR STATION EXCAVATION PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 3 C. Other areas shall be within 0.3 feet of the specified level and slopes shall be maintained such that ponding cannot occur. 3.4 EXCAVATION A. Underpin adjacent structures which may be damaged by excavation work, including utilities and pipe chases. B. Excavate subsoil required to accommodate building foundations, slabs -on -grade, roadways, and site structures. C. Excavate to working elevations for piling work. ID. Machine slope banks. E. Excavation cut not to interfere with normal 45 degree bearing splay of foundation. F. Grade top perimeter of excavation to prevent surface water from draining into excavation. Irrespective of the source of water all excavations shall be kept dry by appropriate dewatering techniques during the excavation and any subsequent backfilling process. All damage caused by disposal of water shall be repaired at the Contractor's expense. G. Remove lumped subsoil, boulders, and rock up to 1/2 cubic yard measured by volume. Larger material will be removed under Paragraph M. H. Notify the Engineer of unexpected subsurface conditions and discontinue affected work in area until notified by the Engineer to resume work. I. Correct unauthorized excavation at no extra cost to Owner. J. Backfill areas over -excavated by error of the Contractor in accordance with Specification 02223 at the Contractor's expense. K. Excavated material not used in fill sections shall either be stockpiled in areas designated on site or removed from the site as directed by the Engineer. L. Rock (defined in Section M) encountered during excavation shall be measured by the Contractor and quantities shall be agreed upon by the Contractor and the Engineer at the time of excavation. Measurement shall be to neat lines of necessary excavation in accordance with the drawings. Additional excavation and backfilling which results from over -blasting shall be performed at the Contractor's expense and to the satisfaction of the Engineer. I %Orchard Unit Compressor Station1ClOOREVB462221Excava(ion.doc REVISION 0 SE Samuel Engineering, lnc. ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02221 ORCHARD COMPRESSOR STATION EXCAVATION PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 4 M. For bulk excavation, rock shall be defined as either ground which cannot be broken using a minimum 300 HP track -type tractor (Cat. D9L or equivalent) fitted with a single tyne ripper, or material that cannot be removed with a 3/4 cubic yard excavator when the equipment is operated and maintained by qualified and experienced personnel in accordance with the equipment Manufacturer's specifications and recommendations. N. The sides of all excavations steeper than the natural angle of repose of the material, when dry, shall be adequately supported by bracing or shoring, as necessary, to prevent slides, slips, cave-ins, or danger to persons or structures. O. Trenches for pipelines and services shall be excavated 3.5 FIELD QUALITY CONTROL A. All finish surfaces that are underneath structures or pavement shall be proof rolled with a loaded, 20 ton capacity truck or equivalent equipment approved by the Engineer. Any region which, in the opinion of the Engineer, exhibits unsatisfactory behaviour shall be removed as directed by the Engineer. 3.6 PROTECTION A. Protect excavations by methods required to prevent cave-in or loose soil from falling into excavation. B. Protect bottom of excavations and soil adjacent to and beneath foundation from freezing. END I:VOrchard Urid Compressor StatlonICWOREV902224Excavation.doc REVISION 0 SE Samuel Engineering. Inc. Samuel Engineering, inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Englewood, Colorado 80111-3227 Orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 03100 CONCRETE FORMWORK FOR EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Project No.: 5023-01 Date Date Date Date Tel: 303-714-4840 Fax: 720-482-8327 Rev. No. By Revisions Approval Date 0 DJB Issued for Construction Engineering Project Controls Estimating • Construction Management ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03100 CONCRETE FORMWORK REV. DATE: MAY 18, 2005, PAGE 1 PART 1 - GENERAL 1.1 SECTION INCLUDES A. Formwork for cast -in-place concrete, with shoring, bracing and anchorage B. Openings for other work C. Form accessories D. Form stripping 1.2 REFERENCE SPECIFICATIONS A. Specification 03200 Concrete Reinforcement B. Specification 03300 Cast -in -Place Concrete 1.3 REFERENCE STANDARDS A. ACI 117 Standard Specification for Tolerances for Concrete Construction and Materials B. ACI 347 Guide to Formwork for Concrete C. ACI 301 Specifications for Structural Concrete D. ASTM A36 Structural Quality Steel 1.4 QUALITY ASSURANCE A. Qualifications 1. Employ personnel skilled and experienced in the construction of formwork in relation to the surface finish requirements and the safety aspects. B. Design 1. Design the formwork to support loads and maintain the required shape, lines and dimensions of the concrete within specified tolerances. 2. Design, engineer and construct formwork, shoring and bracing to conform to code requirements; resultant concrete to conform to required shape, line and dimension. 3. Design in accordance with ACI 347. is\Orchard Unit Compressor Station1C100REV9403100ConcreteFormw<uk.doc REVISION 0 SE] Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03100 CONCRETE FORMWORK REV. DATE: MAY 18, 2005, PAGE 2 C. Allowable Tolerances As shown on the Drawings, and where not shown on the Drawings, as in ACI 347, Clause 33. The tolerances apply to the completed concrete. 1.5 PRODUCT, DELIVERY, STORAGE AND HANDLING A. Store forming materials in neat piles supported and protected to prevent warping, twisting and other damage. PART 2 - PRODUCTS 2.1 MATERIALS A. Plywood 1. Exterior grade fir plywood made with waterproof adhesive and having smooth finish on face for contact with concrete. B. Lumber 1. Grade marked spruce, pine or fir in accordance with ACI special publication No. 4 grading rules. Ensure Lumber is grade marked. 2. Grades suitable for the superimposed loads and size of members and in accordance with revised design and shop drawings. C. Form Screws 1. Sizes to suit formwork design and shop drawings. D. Fibre Forms 1. Water resistant tubes of wall thickness and construction to contain the plastic concrete without buckling or breaking: a. Sonotube by Sonoco Inc. b. Preform Tube by Richmond Screw Anchor Co. E. Structural Steel Shapes, Plate and Bar 1. In accordance with ASTM A36. F. Form Releasing Agent 1. Non -staining compound, not injurious to the concrete, effective in preventing adhesion of concrete to forms and providing clean, oil and grease free concrete surfaces suitable for proper bonding of coatings to concrete: I:lOrchard Unit Compressor StationiClOOREVBl03100CancreteForet ork.:doc REVISION 0 SE Samuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03100 CONCRETE FORMWORK REV. DATE: MAY 18, 2005, PAGE 3 a. Sealtight-Duogard by W.R. Meadows b. Rich -Cote by Richmond Screw Anchor Co. 2. If concrete is to remain exposed, use the same form releasing agent for all applications. 2.2 FORMWORK ACCESSORIES A. Chamfer strips shall be lumber, polyvinyl chloride or neoprene of the size shown on the drawings. B. Nailing strips shall be pressure treated wood. C. Form ties shall be combination tie -and -spreader type with minimum capacity of 3000 pounds designed so that no metal will be within 1 inch of any surface when forms are removed and free of devices which will leave a depression large than 7/8 inch diameter in the concrete surface. Wire ties shall not be permitted. D. For treated formwork surfaces materials used as a parting agent shall be non- staining rust preventive mineral oil. The amount of material used shall be kept to a minimum and any that adheres to reinforcing steel shall be removed. When the concrete surface is to receive a permanent finish coating, the parting agent shall be compatible with the coating. E. Waterstops shall be PVC center bulb type. Width to be 4 inch for slabs and walls 8 inch tick or less and 9 inch for slabs and walls 9 inch thick or more. PART 3 - EXECUTION 3.1 EXAMINATION A. Verify lines, levels and centers before proceeding with formwork. Ensure that dimensions agree with Drawings. B. Prior to commencing installation, thoroughly examine other work upon which this Work is dependent. Report deficiencies discovered and propose adjustments to the Engineer and obtain written authorization before proceeding. 3.2 EARTH FORMS A. Earth cuts shall not be used as forms for vertical surfaces unless approved by Engineer. If approved, hand trim sides and bottom of earth forms. Remove loose soil prior to placing concrete. 3.3 INSTALLATION A. Construct formwork and falsework in accordance with ACI 347 and the following: • B. Use plywood or steel formwork in contact with concrete, unless the Drawings require board forms. l:IOrchard Unit Compressor StationlCIOOREVBl031O0ConcreteForrnwork.doc REVISION 0 5E Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03100 CONCRETE FORMWORK REV. DATE: MAY 18, 2005, PAGE 4 C. In areas where coating of concrete is shown on Drawings, use clean, oil and grease -free forms and forming accessories to provide concrete surfaces suitable for proper bonding of coatings to concrete. D. Construct connections to permit easy removal of the form- work. Nail, screw, bolt, clamp or otherwise secure to retain the correct shape until the concrete sets. E. Ensure deflection and deformation under load are minimal but allowed for so that the completed concrete is within the specified tolerances. F. Make formwork for beams and slabs so that the forms for the sides of the beams and for the soffits of slabs can be removed without disturbing the forms for the beam bottoms or the props under the beam bottoms. Either support vertical props on wedges, or employ other measures whereby the props can be gently lowered vertically when commencing to remove the formwork. G. Form openings as necessary for cleaning and for inspection within the formwork. Close the openings before concrete placing. H. Tighten forms to close all joints. Align and secure joints to avoid offsets. I. Form 1 in. by 1 in. chamfers on the external corners of all concrete except where the Drawings require otherwise. 3.4 WOOD FORMWORK A. Use plywood or other approved panel for formwork throughout except where "boardmarked concrete" as required on the Drawings. 3.5 APPLICATION — FORM RELEASE AGENT A. Apply form release agent on formwork in accordance with manufacturer's recommendations. B. Apply prior to placement of reinforcing steel, anchoring devices, and embedded items. C. Do not apply form release agent where concrete surfaces will receive special finishes or applied coatings which are affected by agent. Soak inside surfaces of untreated forms with clean water. Keep surfaces coated prior to placement of concrete. D. Apply form releasing agent to faces of formwork in contact with concrete. E. If concrete is to remain exposed, use the same form releasing agent for all applications. I:lorchard Unit Compressor Station\C100REV81031OOConcreteForruwor1 doc REVISION 0 5E Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC.. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-09 CONSTRUCTION SPECIFICATION 03100 CONCRETE FORMWORK REV. DATE: MAY 18, 2005, PAGE 5 3.6 INSERTS, EMBEDDED PARTS, AND OPENINGS A. Provide formed openings where required for items to be embedded in or passing through concrete work. B. Locate and set in place items which will be cast directly into concrete. C. Install waterstops continuous without displacing reinforcement. D. Provide temporary ports or openings in formwork where required to facilitate cleaning and inspection. Locate openings at bottom of forms to allow flushing water to drain. E. Close temporary openings with tight fitting panels, flush with inside face of forms, and neatly fitted so joints will not be apparent in exposed concrete surfaces. 3.7 FORM CLEANING A. Clean and remove foreign matter within forms as erection proceeds. B. Clean formed cavities of debris prior to placing concrete. C. Flush with water or use compressed air to remove remaining foreign matter. Ensure that water and debris drain to exterior through clean-out ports. D. During cold weather, remove ice and snow from within forms. Do not use de- icing salts or water to clean out forms unless formwork and concrete construction proceed within a heated enclosure. Use compressed air or other means to remove foreign matter. 3.8 FORMWORK TOLERANCES A. Construct formwork to maintain tolerances required by ACI 117. 3.9 FIELD QUALITY CONTROL A. Inspect erected formwork, shoring, and bracing to ensure that work is in accordance with formwork design, and that supports, fastenings, wedges, ties, and embedded items are secure. B. Reuse of wood formwork is not permitted unless prior approval has been obtained from the Engineer. 3.10 FORM REMOVAL • A. Do not remove forms or bracing until concrete has gained sufficient strength to carry its own weight and imposed loads. i.iOrcherd Unit Compressor Station1C1OOREV[il[]3100ConcreteForrnw rk.doc REVISStON 0 SI= Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 END CONSTRUCTION SPECIFICATION 03100 CONCRETE FORMWORK REV. DATE: MAY 18, 2005, PAGE 6 B. Loosen forms carefully. Do not wedge pry bars, hammers, or tools against finished concrete surfaces scheduled for exposure to view. C. Store removed forms in manner that surfaces to be in contact with fresh concrete will not be damaged. Discard damaged forms. D. Minimum Strip time (Days) Beams sides, walls and unloaded columns Slabs with props left underneath Beam soffits with props left underneath Removal of props under slabs Removal of props under beams 2 3 7 7 14 E. Reshoring for the purpose of early form removal shall be performed so that at no time will large areas of new construction be required to support their own weight. F. In cold weather (ambient less than 40°F); minimum stripping times are to be increased by 100% unless otherwise approved by the Engineer. 1:10rchard Unit Compressor StationtC100REVB10310OConcreteFormwork,doc REVISION 0 0 Samuel Engineering. Inc. Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Tel: 303-714-4840 Englewood, Colorado 80111-3227 Fax: 720-482-8327 Orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 03200 CONCRETE REINFORCEMENT FOR EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Project No.: 5023-01 Date Dat: Date Date Rev. No. By Revisions Approval Date 0 DJB Issued for Construction Engineering • Project Controls • Estimating • Construction Management ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03200 CONCRETE REINFORCEMENT REV. DATE: MAY 18, 2005, PAGE 1 PART 1 - GENERAL 1.1 SECTION INCLUDES A. Reinforcing steel bars, wire fabric and accessories for cast -in-place concrete. 1.2 RELATED SECTIONS A. B. Specification 03100 — Concrete Formwork Specification 03300 — Cast -in -Place Concrete 1.3 REFERENCES A. ACI 301 B. ACI318 C. ACI SP -66 D. ANSI/ASTM A82 E. ANSIIASTM A184 F. ANSIIASTM A185 G. ANSIIASTM A496 H. ANSI/ASTM A497 I. ANSI/AWS D1.4 J. ASTM A615 K. ASTM A704 L. ASTM A706 M. ASTM A996 N. CRSI Structural Concrete for buildings Building Code Requirements for Reinforced Concrete American Concrete Institute — Detailing Manual Steel Wire, Plain, for Concrete Reinforcement Welded Deformed Steel Bar Mats for Concrete Reinforcement Steel Welded Wire Reinforcement, Plain, for Concrete Steel Deformed, Wire for Concrete Reinforcement Steel Welded Wire Reinforcement, Deformed, for Concrete Structural Welding Code - Reinforcing Steel Deformed and Plain Carbon Steel Bars for Concrete Reinforcement Welded Steel Plain Bar or Rod Mats for Concrete Reinforcement Low -Alloy Steel Deformed and Plain Bars for Concrete Reinforcement Rail -Steel and Axle -Steel Deformed Bars for Concrete Reinforcement Concrete Reinforcing Steel Institute Manual of Practice [:%Orchard Urnf Compressor Station%C1OOREVB403200ConcreteReinforcemen.doc REVISION 0 SE Samuel Engineering, Inc, W, amu;de sorirmn.s ENCANA OIL & GAS (USA) INC, ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03200 CONCRETE REINFORCEMENT REV. DATE: MAY 18, 2005, PAGE 2 1.4 SUBMITTALS A. Submit to Engineer two (2) copies of all erection and shop drawings indicating bar sizes, spacings, locations, and quantities of reinforcing steel. In addition, bending and cutting schedules and details of supporting and spacing devices shall be sent for review. B. All shop drawings submitted unchecked or without erection drawings shall be rejected. C. All final, as fabricated, erection and shop drawings, stamped "Certified for Construction", shall be sent to both the Engineer and to the site as follows: 1. Engineer — Two (2) copies each, of all erection and shop drawings. 2. Site — One (1) CD, AutoCAD 2002, or newer, format, containing all erection drawings and two (2) copies each of all erection and shop drawings. D. Submit Manufacturer's mill certificate showing that the materials delivered to the job site meet or exceed specified requirements. 1.5 QUALITY ASSURANCE A. Perform work in accordance with ACI 301 and ACI 318. B. Reinforcement shall be detailed, fabricated and placed in accordance with the latest edition of ACI Detailing Manual, SP -66. C. Maintain one copy of each contract document including applicable codes on site. D. Provide Engineer with access to fabrication plant to facilitate inspection of reinforcement, Provide notification of commencement and duration of shop fabrication in sufficient time to allow for inspection. 16 COORDINATION A. Coordinate scheduling, submittals and work of the various sections of specifications to assure efficient and orderly sequence of installation of interdependent construction elements. B. Coordinate space requirements and installation of mechanical or electrical work which are indicated diagrammatically on drawings. C. Coordinate with placement of formwork, formed openings and other work. t',Orchard Unit Compressor StatlontC1OOREV8103200ConcreteReinforcement.doc REVISION 0 ESamuel Engineering, Inc. We Pro,rda Sarutry+is ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03200 CONCRETE REINFORCEMENT REV. DATE: MAY 18, 2005, PAGE 3 PART 2 - PRODUCTS 2.1 REINFORCEMENT A. Reinforcement Steel: ASTM A615, Grade 60, deformed, for #4 or larger bars. Plain reinforcement may be used for stirrups. B. Reinforcement Steel: ASTM A615, Grade 40, for # 3 or smaller. C. Welded Steel Wire Fabric: ASTM A185, Plain type. 2.2 ACCESSORY MATERIALS A. Chairs, bolsters, bar supports, spacers, etc., sized and shaped for strength and support of reinforcement during concrete placement conditions. B. Special chairs, bolsters, bar supports, spacers adjacent to weather exposed concrete surfaces: use plastic coated steel, size and shape as required. PART 3 - EXECUTION 3.1 FABRICATION A. Fabricate concrete reinforcing in accordance with CRSI Manual of Practice and ACI 318. B. Reinforcement shall not be welded without Engineer's written approval. If approved, weld reinforcement in accordance with AWS DI.4. C. Locate reinforcing splices not indicated on drawings at point of minimum stress. Review location of splices with the Engineer. D All bars shall be bent cold to conform accurately with the approved placing drawings and shall be suitably tagged for field identification. E. Once bars have been bent cold to conform with placement drawings they shall not be straightened, re-bent or heated without the approval of the Engineer. 3.2 MARKINGS A. Each bundle of reinforcement shall be tagged with a mark number which shall be shown on the erection drawings. B. The full mark as given on the drawings shall be hardstamped on tags, with tags securely wired to reinforcement. C. A lot system, by structure/area shall be established by the fabricator. This lot system shall be incorporated into the member mark, and will designate to which structure/area each member goes. D. The fabricator shall submit for review his proposed lot and marking system prior to commencement of detailing. IHlOrchard Unit Compressor Station\C1lOREV®L0320OCancreleReinforcement.doc REVISION 0 $E Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03200 CONCRETE REINFORCEMENT REV, DATE: MAY 18, 2005, PAGE 4 DELIVERY AND STORAGE A. All reinforcement shall be delivered from the Manufacturer or bending yard to site with clear weatherproof identification as to grade, size and mark in accordance with the bending schedules and drawings. B. The Contractor shall pay particular regard to the handling of reinforcement and the use of damaged reinforcing bars shall not be permitted. C. Reinforcement shall be stored clear of the ground. D. Bars, when delivered to the site, shall be as formed and free of twists and from dirt, scale, loose rust, and other coatings. 3.4 PLACEMENT A. Reinforcement (including welded wire fabric) shall be accurately placed in accordance with the approved placement drawings and securely held in place during placement of concrete by wiring, spacers, chairs or other approved accessories. B. Reinforcement for slabs (including welded wire fabric) shall be securely supported on chairs or bolsters in the correct position as shown on the drawings before the concrete is placed. C. Welded wire fabric shall be lapped 2 full meshes and the laps shall be parallel to the direction of span of the slab. D. Bars in 2 way mats including wall steel shall be wired together at not less than 50% of the intersections. E. When placing reinforcement, the Contractor shall provide, at his own expense, all necessary tying wire, chairs and hanger bars to maintain the reinforcing bars and fabric in the correct position. F. Bar supports shall be in conformance with the CRSI Manual of Standard Practice. G. Plastic protected bar supports shall be used on all concrete surfaces which are exposed to view. H. Unprotected wire bar supports or precast concrete blocks shall be used for concrete at grade. The ends of all binding wire shall be turned into the concrete and on no account shall they be left in contact with the formwork. J. Reinforcement splices shall be Class B splices in accordance with the requirements of ACI 318, and with the details shown on the drawings. In splices, the bars shall be in contact and tied together. IkOrchard Unit Compressor StationVC.10t7REVEA03200ConcreteRe nforeemenl.doe REVISION 0 5E Samuel Engineering, Inc. e wmwdc SOOur,o0rs ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03200 CONCRETE REINFORCEMENT REV. DATE: MAY i8, 2005, PAGE 5 L. Splices shall only be made where indicted on the drawings, or as approved by the Engineer. M. Welding of reinforcement shall not be permitted, except with the approval of the Engineer and shall be strictly in accordance with the requirements of Structural Welding Code — Reinforcing Steel (AWS D1.4) of the American Welding Society. N. Immediately prior to concrete placement, all loose rust, oil, paint, dried mortar, form oil and other foreign substances affecting bond shall be cleaned off reinforcement. 3.5 REINFORCEMENT COVER A. Maintain concrete cover around reinforcing as follows unless noted otherwise on drawings: Item Cover Placed against and permanently exposed to earth 3 inch Exposed to earth or weather: #6 Bars and Larger 2 inch #5 Bars and Smaller 1-1/2 inch Not exposed to weather or in contact with the ground Slab, walls and joists #14 and #18 Bars #11 Bars and Smaller Beams, Girders, and Columns (primary reinforcement, ties, stirrups, spirals) 3.6 TOLERANCES A. Maintain tolerances required by ACI 117. END hOrchard Unii Compressor StarianlC1OQREV8103200ConcreteReinfarcemen1.dOC REVISION 0 1-1/2 inch 3/4 inch 1-1/2 inch 0 Samuel Engineering, Inc. Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Tel: 303-714-4840 Englewood, Colorado 80111-3227 Fax 720-482-8327 Orig./Lead Eng.- Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE FOR EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Project No.: 5023-01 Date Date Date Date Rev. No. 13y Revisions Approval Date 0 DJB Issued for Construction Engineering • Project Controls • Estimating • Construction Management ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 1 • PART 1 - GENERAL • • 1.1 SECTION INCLUDES A. The furnishing and installation of concrete and related work for all structures shown on the drawings issued by the Engineer. All work shall be in accordance with the drawings and this section. Any conflict between this section and supporting documents shall be resolved by the Engineer in writing. 1.2 RELATED SECTIONS A. Specification 03100 — Concrete Formwork B. Specification 03200 — Concrete Reinforcement 1.3 REFERENCES A. ACI 301 Structural Concrete for Buildings B. ACI 302 Guide for Concrete Floor and Slab Construction C. ACI 304 Guide for Measuring, Mixing, Transporting and Placing Concrete ©. ACI 305 Hot Weather Concreting E. ACI 306 Cold Weather Concreting F. ACI 308 Standard Practice for Curing Concrete G. ACI 309 Guide for Consolidation of Concrete H. ACI 318 Building Code Requirements for Reinforced Concrete I. ANSIIASTM D994 Preformed Expansion Joint Filler for Concrete (Bituminous Type) J. ANSIIASTM Preformed Expansion Joint Filler for Concrete Paving and D1751 Structural Construction (Nonextruding and Resilient Bituminous Types) K. ANSIIASTM Preformed Sponge Rubber, Cork and Recycled PVC D1752 Expansion Joint Fillers for Concrete Paving and Structural Construction L. ASTM C31 Mixing and Curing Concrete Test Specimens in the Field M. ASTM C33 Concrete Aggregates I:1Orcteard Unit Compresso StationlCtOOREVe103300Cast-in-PNaceCancrete dao REVISION 0 $ Samuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 2 N. ASTM C39 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens 0. ASTM C94 Ready -Mixed Concrete P. ASTM C 109 Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2 in. or 50mm Cube Specimens) Q. ASTM C150 Portland Cement R. ASTM C171 Sheet Materials for Curing Concrete 5. ASTM C172 Standard Practice for Sampling Freshly Mixed Concrete T. ASTM C260 Air -Entraining Admixtures for Concrete U. ASTM C330 Lightweight Aggregates for Structural Concrete V. ASTM C494 Chemicals Admixtures for Concrete W. ASTM C618 Coal Fly Ash and Raw or Calcinated Natural Pozzolan for Use in Concrete X. ASTM C684 Standard Test Method for Making, Accelerated Curing, Testing Concrete Compression Test Specimens 1.4 SUBMITTALS A. Submit under provision of Specification 03200, Concrete Reinforcement. 1.5 PROJECT RECORD DOCUMENTS A. Keep accurate, up-to-date records of the concrete work (See items 1, 2, 3, 4, and 5 below). 1. Show details of each concrete pour on prints of general plan drawings marked up with construction joints, pour date and relevant specimen numbers. 2. Note the quantities and class of concrete for each section poured. 3. Keep available to the Engineer a record of concrete test results obtained in accordance with subsection 3.9 including compressive strength at 7 days and 28 days and slump measurement. 4. Submit copies of all test certificates to the Engineer within 7 days of the test being completed. 5. Accurately record actual locations of embedded utilities and components which are concealed from view. I -Orchard Unit Compressor StationCC1OOREVB103309Cast-m-PlsoeCancrete d o REVISION 0 SE Samuel Engine eying. I r#. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 3 1.6 QUALITY ASSURANCE A. Perform Work in accordance with ACI 301. B. Maintain one copy of contract documents including applicable codes, on site. C. Acquire cement and aggregate from same source for all work. D. Conform to ACI 305 when concreting during hot weather. E. Conform to AC1 306 when concreting during cold weather. 1.7 COORDINATION A. Coordinate scheduling, submittals, and work of the various sections of specifications to assure efficient and orderly sequence of concreting of interdependent construction elements. PART 2 - PRODUCTS 2.1 CONCRETE MATERIALS A. Cement: ASTM C 150, Type II. Blended cement shall not be used. B. Fine and Coarse Aggregates: ASTM C33. C. Water: Clean and not detrimental to concrete. 2.2 ADMIXTURES A. Air Entraining Admixture: ASTM C260. B. The use of plasticizers or other additives/admixtures shall be at the discretion of the Engineer and only with his written approval. 2.3 ACCESSORIES A. Bonding Agent: The use shall be at the discretion of the Engineer and only with his written approval. 2.4 JOINT DEVICES AND FILLER MATERIALS A. Joint Filler: Premolded type of the thickness indicated, rigid cane fibreboard or cellular in nature and compatible with the joint sealant to be used. Asphalt impregnated or tar based joint fillers are not to be used. 13. Joint Sealant: Shall be non -shrinking polysulfide or polyurethane, self -levelling for slabs, and non -sag for walls. I. \Orchard Unit Compressor StatioMCICgREV6103300Cest-m-PladeConerele.doc REVISION 0 SE Samuel Engineering, tnc sob Nrnuidc ST, rirrr. , ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 4 2.5 CONCRETE MIX A. Mix concrete in accordance with ACI 304. B. Deliver concrete in accordance with ASTM C94. C. Delivery of concrete from distant batch plants shall be done on an advisory basis. Any ready -mixed concrete not placed within 60 minutes of the initial addition of water may be rejected by the Engineer. Concrete delivery shall be constant during a scheduled pour. Any interruptions to delivery may result in rejection by the Engineer of any part of the concrete and its removal carried out at the Contractor's expense. D. Provide concrete with the following properties: Min. 28 Day Compressive Strength 4000 psi Usage Reinforced and Plain Footings, Pedestals Walls, Columns and Beams 4000 psi Thin Structural slabs Slabs on Grade Lean Mix Concrete* 4000 psi 4000 psi 1500 psi Maximum Size Slumt� Aggregate 2 - 4 inches 3/4 inch 2 - 4 inches 314 inch 1 -- 3 inches 1 - 4 inches 1 - 4 inches 3/4 inch 1 inch 1 inch * Lean mix concrete as approved by the Engineer may be structural backfill and around buried pipework. E. Use accelerating admixtures in cold weather only when approved by the Engineer. Use of admixtures will not relax cold weather placement requirements. F. Use calcium chloride only when approved by the Engineer. G. Use set retarding admixtures during hot weather only when approved by the Engineer. H. Add air entraining agent to normal weight concrete mix for work exposed to exterior as approved by the Engineer. PART 3 - EXECUTION Air Ent. 3-5% 3-5%a 3-5%0 5-7% 3 - 5% used for 3.1 EXAMINATION A. Verify site conditions - all excavation for foundations shall be true to line and level and shall conform to the dimensions as shown on the drawings. I:IOrChafo lino Compressor SlationkelDDRE'J6103300Cast-m-RlaceConcrete.Poo REVISION 0 SE Samuel Engineering. Inc. µ•r• vrr! de Soartrow ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 5 B. Verify requirements for concrete cover over reinforcement. C. Verify that anchors, seats, plates, reinforcement and other items to be cast into concrete are accurately placed, positioned securely, and will not cause hardship in placing concrete. 3.2 PREPARATION A. Prepare previously placed concrete by cleaning with steel brush and applying pre - approved bonding agent in accordance with manufacturer's instructions. B. In locations where new concrete is dowelled to existing work, drill holes in existing concrete, insert steel dowels and pack solid with non -shrink grout. 3.3 JOINTING OF CONCRETE A. A control joint plan shall be prepared by the Contractor for each area and shall be approved by the Engineer prior to the commencement of work in that area. B. The spacing of control joints in walls and slabs shall not exceed 25 feet maximum spacing. C. Recesses for control joint sealants shall be accurately formed and filled with the sealant nominated on the drawings in strict accordance with the manufacturer's recommendations. If curing compounds have been used on concrete any compound film on concrete faces where a sealant bond is required shall be cleaned off and removed to the satisfaction of the Engineer to provide clean fresh concrete surfaces for contact with sealant compounds. D. Where a construction joint is required by the Contractor, the Contractor shall obtain approval for the proposed location from the Engineer prior to pouring that portion of the work, and all costs for the approved joints shall be borne by the Contractor. E. Construction joints in slabs shall be positioned at the discretion of the Engineer, such that the maximum area poured at any one time is less than 600 ft2, rectangular in plan where possible and with no side greater than 3 times the other. F. Construction joints shall be formed by inserting a temporary vertical stopping board against which concrete can be properly consolidated, and at the discretion of the Engineer, an arised edge shall be formed along the exposed edge to ensure a straight line joint on the finished surface. G. Exposed faces of all construction joints to be connected to new concrete shall be properly cleaned of all loose or deleterious material and roughened by air or water or wire brushing or mechanical abrading or chipping to show the tips of the coarse aggregate. If this is not possible, the previous work shall be bush hammered and cleaned to present a suitable surface to cast new work against. Reinforcement shall continue through construction joints. I:VOrrhard Unit Compressor Stab©MC100REV8103300Casbkrti-PlaceConcrete..ckn REVISION 0 SE Samuel Engineering, Inc. YY. Fh.L ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -!N -PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 6 11. Immediately prior to casting new concrete, the exposed face of existing concrete shall be saturated with water, and left in a damp condition with no free water on the surface. Where a bonding agent is used, surface treatment shall be recommended by the manufacturer. Expansion joints in all concrete members in non-acid areas as specified on the drawings are to be constructed as indicated or approved. Expansion joint filler is to be of the premolded type of the thickness indicated, rigid cane fibreboard or cellular in nature and compatible with the joint sealant to be used. J. Expansion joints in all concrete members in acid areas as specified on the drawings are to be constructed as indicated or approved. After chemical resistant sealing system has been applied to the concrete and the sides of the joints, joints are to be sealed to a depth of 3/4 inch for joints 1/2 inch in width, and to a minimum depth of 1 inch for joints greater than 1/2 inch in width. The joint sealer is to be Protex Polyseal 9028 series or approved equivalent. The joint sealing compound is to be mixed and installed in strict accordance with the manufacturer's recommendations. 3.4 PLACING CONCRETE A. Place concrete in accordance with ACI 304. B. No concrete placement shall commence until all necessary equipment and manpower for placement, compaction, and finishing are at the location of the pour and in good condition; C. All work, stages of work, materials and processes, shall be made available for, and be subject to, the inspection and approval of the Engineer. D. The Contractor shall give a minimum of 24 hours notice to the Engineer and obtain his written consent before placing any concrete. E. Approval by the Engineer shall not relieve the Contractor of responsibility for the work. F. Ensure reinforcement, inserts, embedded parts, formed joint fillers are not disturbed during concrete placement. G. Moisten subgrade prior to placing concrete directly on subgrade. H. Consolidate concrete in accordance with ACI 309. 1. Separate slabs on grade from vertical surfaces with 1/2 inch thick joint filler as specified on the drawings. J. Extend joint filler from bottom of slab to within 3/4 inch below finished slab surface. K. Place floors in a checkerboard pattern. L. Screed floors and slabs on grade level, maintaining surface flatness of maximum 1/4 inch in 10 feet. !:\Orchard Unit Compressor $tationlCiPOREV610.330(,Cast-in-PiereConcrete.dac REVISION 0 SE Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 7 M. No concrete shall be placed on frozen ground. 3.5 HOT AND COLD WEATHER CONCRETING A. Hot weather concreting practices shall be in accordance with ACI 305. Cold weather concreting practices shall be in accordance with ACI 306. B. The Contractor shall submit, for the Engineer's approval, details or proposed arrangements for the placing of all concrete where the temperature of the air surrounding concrete pours is in excess of 90°F or below 41°F. C. The temperature of the concrete at the time of delivery at the point of placement shall be kept within the range of 50°F to 90°F, unless otherwise approved by the Engineer. D. Concrete temperatures shall be recorded at the time of placing, as directed by the Engineer. E. For placement of concrete in ambient temperatures below 41 °F, adequate protection of the concrete after placement shall be provided by covering, insulating and/or heating to maintain a minimum concrete temperature of 50°F for 72 hours after placing. F. For placement of concrete in ambient temperatures above 90°F, the Contractor shall ensure that the holding time in the transit mixer is kept to a minimum and the concrete is adequately cured, initially by fog sprays, and then water cured for 14 days. Incipient plastic shrinkage cracks shall be removed by revibration or reworking of the surface up to the time of initial set. 3.6 CONSOLIDATION OF CONCRETE A. All structural concrete shall be consolidated by vibration to a plan and in a manner approved by the Engineer. B. For work excluding slabs of thickness less than 6 inches, internal or external vibrators of appropriate size and of adequate number and power shall be used wherever practical for consolidating the concrete, having regard to the size and spacing of reinforcement in the form. t:. Internal or external vibrators may be supplemented by external forth vibrators or vibrating screeds. D. Internal vibrators shall conform to the requirements in the Internal Vibrators for Various Applications Table. 1'VOr hard Unit Compressor 3tatioreC100REVBNI3300Cast-in-PlaceConerete.doc REVISION 0 0 Sarnuel Engineering, Inc. ..dn $�,il+morn ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 8 Internal Vibrators for Various Applications Table Minimum Frequency Vibrations Per Minute * Diameter Rate of Placing Per Vibrator 10,000 314 --1-1/2 inch 1 — 5 yd3/hr 9,000 1-1/4 — 2 1/2 inch 3 —10 yd3/hr 8,000 2 — 3-1/2 inch 6 — 20 yd3/hr 7,000 ** 3 — 6 inch 15 — 40 yd3/hr 6,000 * * 5 — 7 inch 25 — 50 yd3/hr ** While immersed in concrete. These vibrators are recommended for use with low slump concrete containing maximum size aggregate of more than 1 -1/2 inches. E. Slabs of thickness less than 6 inches may be consolidated by means of approved vibrating screeds. F. Equipment used for vibration consolidation shall be kept in good working order at all times and there shall be adequate standby units available. 3.7 CONCRETE FINISHING A. General 1. The classes of finish and the requirements for finishing of concrete surfaces shall be as specified in this subsection or as indicated on the drawings. 2. Surface irregularities are classified as "abrupt" or "gradual." Offsets caused by displaced or misplaced form sheathing or lining or form sections, or by loose knots in forms or otherwise defective form lumber will be considered as abrupt irregularities, and will be tested by direct measurements. 3. All other irregularities will be considered as gradual irregularities, and will be tested by use of a template, consisting of a straightedge or the equivalent thereof for curved surfaces. 4. The length of the template will be 5 feet for testing of formed surfaces and 10 feet for testing of unformed surfaces. B. Formed Surfaces 1. The classes of finish for formed concrete surfaces are designated by use of Symbols FI, F2, F3 and F4 for standard finishes and BFT for the special finish. 1:1Qrchard Unit Compressor Station1C100REV8103300Cast-in-PlaceConcrete doc REVISION 0 $Ir Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 9 2. No sack rubbing or sandblasting will be required on formed surfaces. 3. No grinding will be required on formed surfaces, other than that necessary for repair of surface imperfections. 4. The repair of defective concrete and filling of holes left by the removal of fasteners from the ends of tie rods and the specified curing shall be required for all classes of finish. C. Classes of Formed Surface Finishes 1. Finish F1 applies to formed surfaces upon or against which fill material or concrete is to be placed. The surfaces require no treatment after form removal except for repair of defective concrete and filling of holes left by the removal of fasteners from the ends of tie rods and the specified curing. Correction of surface irregularities shall be required for depressions only and only for those which exceed 1 inch. 2. Finish F2 applies to all formed surfaces not permanently concealed by fill material or concrete, or not designated in the interior finish schedule, on the drawings, or in these specifications to receive Finishes F1, F3 or F4, or Special Finish BFT. Surface irregularities shall not exceed 1/4 inch for abrupt irregularities and 1/2 inch for gradual irregularities. 3 Finish F3 applies to formed surfaces, the appearance of which is considered by the Engineer to be of special importance, such as surfaces of structures prominently exposed to public inspection. Surface irregularities shall not exceed 1/4 inch for gradual irregularities and 1/8 inch for abrupt irregularities, except that abrupt irregularities will not be permitted at construction joints. 4. Finish F4 applies to formed surfaces for which accurate alignment and evenness of surface are of paramount importance from the standpoint of setting equipment and maintenance of specified clearances. Abrupt irregularities shall not exceed 1/4 inch for irregularities parallel to the direction of flow, and 1/8 inch for irregularities not parallel to the direction of the flow. Gradual irregularities shall not exceed 1/4 inch. 5. Special Finish BFT applies to the formed surfaces designated on the architectural drawings or in the interior finish schedule to receive a board form texture finish. Except for the formed grooves, cone holes and the V- shaped fins, surface irregularities shall not exceed 1/4 inch for gradual irregularities and 1/8 inch for abrupt irregularities. Abrupt irregularities will not be permitted at construction joints. D. Upper Surface Finishes 1. Screeded finish is for surfaces of roads or of foundation beds, slabs and structural members to be covered by backfill, subsequent stages of construction, bonded concrete topping or cement mortar beds to receive pavings, and on exposed surfaces of paving where a superior finish is not required. The finished operations shall consist of levelling and screeding the concrete to produce a uniform, plain or ridged surface, with surplus (:\Orchard Unit Compressor&alien1C100RA•=+JBV03300Cast-in-F'IaceConcrele.00c REVISION 0 Samuel Engineering, Inc ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 10 • concrete being struck off by a straight edge immediately after consolidation. 2. Wood floated finish for surfaces of beds and slabs to receive mastic pavings or block or the pavings bedded in mastic and for exposed surfaces or pavings where a hard smooth steel trowelled surface is not required. Floating shall be carried out after the concrete has hardened sufficiently and may be by hand or machine. Care shall be taken that the concrete is worked no more than necessary to produce a uniform surface free from screed marks. 3. Steel trowel finish is a hard smooth steel trowelled finish for surfaces of concrete pavings, tops of walls, coping and other members exposed to weathering, surfaces of beds and slabs to receive thin flexible sheet, and tile paving bedded in adhesive, and seatings for bearing plates and the like where the metal is in direct contact with the concrete. Trowelling shall not commence until the moisture film has disappeared and the concrete has hardened sufficiently to prevent excess laitance from being worked to the surface. The surfaces shall be troweled under firm pressure and left free from trowel marks. 4. Broomed finish is a brushed finish for surfaces of pavings and slabs where specified. It shall be finished as specified for smooth steel trowelled finish, except that the hard steel trowelling shall be omitted. After the machine trowelling is completed, the surface shall be brushed with a fibre bristle brush or broom across the direction of traffic. E. Surface Hardeners 1. Hardeners, when required, shall be as specified on the drawings and applied to surfaces where indicated in the drawings, in accordance with the manufacturer's instructions. 3.8 CURING AND PROTECTION A. Immediately after placement, protect concrete from premature drying, excessively hot or cold temperatures, and mechanical injury. B. Maintain concrete with minimal moisture loss at relatively constant temperature for a period necessary for hydration of cement and hardening of concrete. C. Cure floor surfaces in accordance with ACI 308. D. Ponding: Maintain 100 percent coverage of water over floor slab areas continuously for 4 days. E. Spraying: Spray water over floor slab areas and maintain wet for 7 days. F. Provided no additional concrete or fmishes have to be applied to the cured surface, curing may be by spraying all surfaces with curing compound directly after screeding. tl Orchard Dolt Compressor Statron9C10UREV13103300Crit-in-PYaceConcrete.doc REVISION 0 Samuel Engineering. Inc. W•P. -m=., ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV, DATE: MAY 18, 2005 PAGE 11 G. Only curing compounds approved by the Engineer may be used. Slabs must be covered with a membrane after finishing. H. Where additional concrete or non -compatible finish is required to be applied to the cured surface, water curing shall be used, or surfaces shall be wrapped with impervious plastic membrane. However, in the latter case, the enclosure must be completely sealed, on all sides, by plastic welding or clamping along edges. 1. Waterproof paper and plastic film shall conform to ASTM C171. J. When the ambient temperature exceeds 90°F, the Contractor shall carry out curing after initial set by fog sprays, commence water curing as soon as it is practicable, and continue for 14 days. K. No curing compound shall be used in hot weather placement. L. Vertical surfaces shall be protected by impermeable shutter or membranes and shaded from the direct heat of the sun. 3.9 FIELD QUALITY CONTROL A. Field inspection and testing will be performed in accordance with ACI 301. B. Provide free access to work and cooperate with appointed firm. C. Submit proposed mix design of each class of concrete to the Engineer for review prior to commencement of Work. D. Tests of cement and aggregates may be performed to ensure conformance with specified requirements. E. The Contractor shall be responsible for taking samples of the concrete and the testing of samples in accordance with ASTM C 172 at the frequencies specified in the table below. Each sample shall consist of four (4) test cylinders which shall be tested by a registered laboratory. — 1 at 7 days after placing of the concrete. — 2 at 28 days after placing of the concrete. — 1 spare Table of Concrete Sampling Frequencies Pour Size 1 cu. yd. to 10 cu. yd. 10 cu. yd. to 50 cu. yd. 50 cu. yd. to 100 cu. yd. Number of Samples 1 2 (1St batch and 1 other) 3 (1" batch and 2 others at random) For each additional 50 cu. yd. of pour, 1 additional sample shall be taken. lDrchardUnit CompressorStation\C100REVB\03300Cast-in-PI eC©nerete.doc REVISION 0 SE Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 03300 CAST -IN-PLACE CONCRETE REV. DATE: MAY 18, 2005 PAGE 12 F. One additional test cylinder shall be taken during cold weather concreting, cured on job site under same conditions as the concrete it represents. G. One slump test shall be taken for each sample taken. 3.10 PATCHING A. Allow Engineer to inspect concrete surfaces immediately upon removal of forms. B. Excessive honeycomb or embedded debris in concrete is not acceptable. Notify Engineer upon discovery. C. Patch imperfections as directed in accordance with AC1301. 3.11 TOLERANCES A. Tolerances for concrete work as built shall conform to ACI 117. 3.12 PAINTING AND PROTECTIVE COATINGS A. Painting, protective coating and surface preparation shall be carried out in accordance with Technical Specification Section 09900, Painting. 3.13 DEFECTIVE CONCRETE A. Defective Concrete: Concrete not conforming to required lines, details, dimensions, tolerances or specified requirements. B. Repair or replacement of defective concrete will be determined by the Engineer. C. Do not patch, fill, touch-up, repair, or replace exposed concrete except upon express direction of Engineer for each individual area. END 1.4Qrchard Unit Compressor Stat{onIC100REVBV03300Cast-in-PlaoeConcrete.dnc REVISION 0 0 Sarin (lel Engineering, Inc. Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Tel: 303-714-4840 Englewood, Colorado 80111-3227 Fax: 720-482-8327 Orig./Lead Eng: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 02370 CAISSONS FOR Eneana Oil & Gas (USA) Orchard Compressor Station Project No.: 5023-01 Date Date Date Date Rev. No. By Revisions Approval Date 0 DIB Issued for Construction Engineering • Project Controls • Estimating • Construction Management ENCANAOIL&GAS(USA) ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 02370 CAISSONS REV. DATE: MAY 18, 2005, PAGE 1 PART 1 - GENERAL 1.1 SECTION INCLUDES This section specifies excavation and concrete required for construction of foundation caissons. 1.2 DEFINITIONS Satisfactory Bearing Material: Piers should extend 20 foot minimum into the ground from finished grade elevation. 1.3 RELATED WORK A. Specification 03300 — Cast -In -Place Concrete 1,4 REFERENCES ASTM A615 ASTM A996 • 1.5 SUBMITTALS Deformed and Plain Carbon Steel Bars for Concrete Reinforcement Rail -Steel and Axle -Steel Deformed Bars for Concrete Reinforcement A. Caisson record: Data as specified. B. Rock excavation: Data as specified. 1.6 CONTRACT BASIS A. Contract price for caissons will be based upon length of each diameter of caissons shown. Length of caissons will be measured from bottom elevation to top elevation of caisson. 1. Adjustment of contract price shall be based upon total length of each diameter caisson placed. When total length of each diameter of completed caissons is greater or less than length shown, contract price adjustment will be made. 2. Contract price and time will be adjusted when artificial materials that are not shown are encountered. I.IOrchardUhl Compressor Stallor C100REVBV02370Ca.ssonsdoc REVISION 0 5E Samuel Engineering, Inc. vVe Prewc, S01,W,00s ENCANA OIL & GAS (USA) CONSTRUCTION SPECIFICATION 02370 ORCHARD COMPRESSOR STATION CAISSONS PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 2 1.7 CLASSIFICATION OF EXCAVATION A. Soil/Weathered Rock Excavation: Soil or weathered rock that can be reasonably excavated with the rock auger, i.e. rock auger advancement is greater than 6 inches per 15 minutes. B. Sloping Weathered Rock Excavation: Excavation of soil/weathered rock that can typically be excavated with the rock auger, except the steeply sloping orientation of the stratum causes the rock auger to run askew. C. Rock Excavation: 1. Excavation of material that meets the rock auger refusal criteria and requires the rock core barrel or other hard rock excavation techniques for removal. 2. Rock auger refusal is defined as a penetration rate of less than 6 inches in 15 minutes, while operating a caisson drilling rig, rated with a torque capacity of at least one million inch -pounds, applying a continuous down pressure of at least 50,000 pounds, equipped with a rock auger that contains conical carbide -tipped ("Kennemetal") teeth. D. Nominal Soil or Weathered Rock Seams Nominal soil or weathered rock seams below rock auger refusal will be excavated and considered as rock for rock excavation quantities. A nominal soil or weathered rock seam is one which is less than 2 feet thick. Where soil or weathered rock seams or voids of 2 feet or greater are excavated within a mixed rock/soil or rock/weathered rock profile, excavation is classified as soil/weathered rock excavation until rock auger refusal is again established. 1.8 MEASUREMENT AND PAYMENT FOR ROCK EXCAVATION A. Measurement: Excavation type in units of length shall be considered to change at the upper contact with a different excavation type as defined by Section 1.7. B. Payment: Contract unit rates per length of each diameter caisson shall be provided for each excavation condition type noted above in Section 1.7. Contract price and time will be adjusted for overruns or underruns. C . Payment for Differing Site Conditions: No payment will be made for any rock excavation beyond caisson limits. When rock excavation, as classified, is encountered, contract price and time will be adjusted. 1:10rchard Unit Corepressor Stalioni CIDQREVBu7T37OGaissans.dac REVISION 0 SE Samuel Engineering, Inc. rv•P u•Sour ENCANA OIL & GAS (USA) CONSTRUCTION SPECIFICATION 02370 ORCHARD COMPRESSOR STATION CAISSONS PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 3 L9 TOLERANCES Install caissons with a maximum variation of 3 -inches of the center of any caisson from the location shown. Caissons shall not be out of plumb more than 1 percent. PART 2 - PRODUCTS 2.1 MATERIALS A. Concrete: Type II, slump shall be 5 inches plus or minus 1 inch. B. Reinforcing Steel: ASTM A615 or ASTM A996, deformed. C. Steel Casings: Inside diameter not less than nominal size of shaft as scheduled. PART 3 - EXECUTION 3.1 GENERAL A. Size: Minimum sizes and types of caissons are as shown on the drawings. Proposal to use caissons of sizes and types different from those shown may be accepted if submitted in writing to the Engineer for approval and provided the following conditions are met: 1. Least dimension of caisson is equal to or greater than least dimension shown. 2. Enlargement at base of caisson is in bell -form with dimensions equal to or greater than minimum shown. 3. Entire caisson receives full lateral support from surrounding material. B. Changes: Requests for change in size or type of caisson from those shown shall be accompanied by calculations and other documentation necessary to show that proposed changes will meet load requirements. Do not proceed with changes before receiving written approval from the Engineer. C. Temporary Steel Casings: Install casings for protection of personnel, for prevention of cave-ins or displacement of earth walls, and for retention of ground water. D. Defective Casings: Do not install buckled, distorted or otherwise damaged casings. Replace casings damaged or disturbed during construction, casings that are not mud -tight or otherwise not in accordance with drawings or specifications, at no additional cost to the Owner. horchard Unit Compressor Station%C1ODREVB\42374Caissons.doc REVISION 0 SE Samuel Engineering, Inc. We F[oV!{IC. tipiynuirs ENCANA OIL & GAS (USA) CONSTRUCTION SPECIFICATION 02370 ORCHARD COMPRESSOR STATION CAISSONS PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 4 E. Survey: Registered Professional Land Surveyor or Registered Civil Engineer shall establish lines and levels and stake caisson locations. 3.2 EXCAVATION J.3 A. Excavation and construction methods shall result in minimum disturbance of surrounding material and full lateral support of caissons by surrounding material. B. Remove boulders and rock in caissons such as rock seams underlaid with soil seams, sloping rock or rock otherwise unsatisfactory for bearing. C. If materials with satisfactory bearing strength occur at elevations higher or lower than those shown, place bottom of caissons at higher or lower elevations, subject to approval of the Engineer. PLACING CONCRETE A. Before placing concrete, caissons shall be inspected, cleared of mud, water, loose material and debris, and approved by the Geotechnical Engineer. B. Place concrete using a down pipe to direct flow of concrete. Except in presence of water, concrete may fall freely up to a maximum height of 30 feet. Use tremie pipe or pump if distance is greater than 30 feet. C. Withdraw casings, as concrete is deposited, maintaining top surface of concrete constantly at least 6 feet above lower end of casings. Place concrete to form a monolithic cylindrical shaft having full lateral support from surrounding undisturbed materials. Strike finished top surface of concrete to true plane at required elevation. D. Concrete placement in each caisson shall be one continuous operation. If placing operation has to be stopped, leave surface approximately level. If concrete has hardened, clean surface and slush with a 1 to 1 cement -sand grout before placing operation is resumed. E. When water is present, control water level to within 2 inches of bottom of caisson by pumping. If impossible or impractical to control water, secure written permission from the Geotechnical Engineer to place concrete through water by means of a watertight tremie. 1. When placing concrete under water, discharge end of tremie shall be submerged in fresh concrete and shaft of tremie maintained full of concrete to point above water Ievel. 2. Increase cement content of concrete required to be placed in water by one sack per cubic yard of concrete. 1:10rcirardUnit Compressor St.ationYClO REVB102370CSissorisdoe REVISION 0 SE Samuel Engineering, Inc. we Frcvrdv Snrutwfs ENCANA OIL & GAS (USA) CONSTRUCTION SPECIFICATION 02370 ORCHARD COMPRESSOR STATION CAISSONS PROJECT NO.: 5023-01 REV. DATE: MAY 18, 2005, PAGE 5 3.4 CAISSON RECORD A. For each caisson placed and before superstructure framing is placed, submit to Engineer for approval a certified report recording the following information prepared by Registered Professional Land Surveyor or Registered Civil Engineer. 1. Caisson number. 2. Location. 3. Plumbness. 4. Dates: Excavation completed. Concrete placed. 5. Diameters: Top of shaft. Bottom of shaft. Bell. 6. Elevations: Top of ground. Top of concrete. Top of rock. Bottom of caisson. END I:iOrsiiard Unit Compressor Station%ClOOREVB\0237OCaissons.doc REVISION 0 SE] Samuel Engineering, Inc. Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Tel: 303-714-4840 Englewood, Colorado 80111-3227 Fax: 720-482-8327 Orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 02223 BACKFILLING FOR EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Project No,: 5023-01 Date Date Date Date Rev. No. By Revisions Approval Date 0 DJB Issued for Construction Engineering • Project Controls • Estimating • Construction Management ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02223 ORCHARD COMPRESSOR STATION BACKFILLING PROJECT NO.: 5023-01 REV. DATE: May 18, 2005, PAGE 1 PART 1 - GENERAL 1.1 SECTION INCLUDES A. Filling to subgrade lines and elevations shown on the drawings. B. Backfilling areas of over excavation. C. Backfilling of underground services and drainage structures. D. Compaction of all filling materials. 12 RELATED SECTIONS A. Specification 02221-- Excavation. B. Specification 03300 — Cast -In -Place Concrete 1.3 REFERENCES A. ASTM 0136 Test Method for Sieve Analysis for Fine and Coarse Aggregates B. ASTM D698 Test Methods for Laboratory Compaction Characteristics of Soils Using Standard Effort (12,400 ft-Ibflft3) C. ASTM D1556 Test Method for Density and Unit Weight of Soil in Place by the Sand -Cone Method D. ASTM D1557 Test Methods for Laboratory compaction Characteristics of Sail Using Modified Effort (56,000 ft-lbfift3) E. ASTM D2922 Test Methods for Density of Soil and Soil -Aggregate in Place by Nuclear Methods (Shallow Depth) F. ASTM D4254 Test Methods for Minimum Index Density and Unit Weight of Soils and Calculation of Relative Density I:YOrchard Unit Compressor StationlCl OOREVB1U2223BaCiIling.doC REVISION 4 SE Samuel Engineering, inc. ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02223 ORCHARD COMPRESSOR STATION BACKFILLING PROJECT NO.: 5023-01 REV. DATE: May 18, 2005, PAGE 2 PART 2 — PRODUCTS 2.1 FILL MATERIALS A. Pipe Bedding — Bedding material aggregates shall be well graded, rounded crushed stone or crushed gravel, graded with the following limits: Sieve Size Percent Passing 112 inch 100 3/8 inch 85 to 100 Number 4 10 to 30 Number 8 Oto 10 Number 16 Oto 5 B. Filler Materials: The aggregates for drain filters shall consist of coarse grained free draining gravel, slag, or crushed stone with rounded or angular particle shape, grade within the following limits: Sieve Size Percent Passing 1-112 inch 100 1 inch 95 to 100 112 inch 25 to 60 Number 4 Oto 10 Number 8 Oto 5 1:10r -chard Unit Compressor SlationlC1OOREV6142223Baeldillifg.doe REVISION 0 Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 02223 BACKFILLING REV. DATE: May 18, 2005, PAGE 3 C. Aggregate Base and Facility Surfacing Material: The aggregates for base course shall be crushed stone, crushed slag, crushed gravel or natural gravel, with angular particle shapes being preferred, graded within the following limits: Sieve Size Percent Passing 1 inch 100 3/4 inch 50 to 90 Number 4 30 to 60 Number 40 7 to 30 Number 200 0 to 5 D. Common Fill: Characteristics to be determined by testing laboratory and approved by the Engineer. PART 3 - EXECUTION 3.1 PREPARATION A. The Contractor is responsible for laying out and staking all work from base lines and survey reference points established by the Engineer. B. All areas receiving fill shall be proof rolled prior to placing fill. Proof rolling equipment shall be approved by the Engineer. Any regions which in the opinion of the Engineer exhibit unsatisfactory behaviour shall be removed as directed by the Engineer. C. The Contractor is responsible for locating, and protecting as required all underground services and structures from damage prior to commencing backfilling operations. D. The Contractor shall obtain authorization to commence backfilling from the Engineer prior to the placement of any material. Material placed without the authorization of the Engineer shall be removed as directed by the Engineer at the Contractor's expense. 3.2 FILLING A. Areas shall be filled to the lines and grades shown on the drawings with material specified on the drawings. Where material is not specified on the drawings, common fill shall be used. B. Filling operations shall not continue over wet, frozen or spongy surfaces. The Contractor is responsible for maintaining all necessary drainage. IlOrcnard Unl Compressor StationIC1OOREVB\O2223®ackflhng.doc REVISION 0 sE Samuel Engineering, Inc. WW P1,.,df Sf(rrr,nns ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02223 ORCHARD COMPRESSOR STATION BACKFILLING PROJECT NO.: 5023-01 REV. DATE: May 18, 2005, PAGE 4 C. Maximum lifts of fill shall not exceed 6 -inches of loose material. D. Fill material shall be placed such that ponding of water is not possible. Any backfill material damaged by the weather or ground water seepage shall be removed and replaced at the Contractor's expense. E. Fill materials shall be watered or dried, as required, to obtain the specified compaction requirements. F. Filling against concrete work or masonry walls shall not commence until the structures have reached sufficient strength to withstand the pressure of the backfill as placed and compacted. In no case shall filling commence prior to concrete and masonry having cured a minimum of 28 days unless approved by the Engineer. Lateral support shall be provided for walls during backfilling and care should be taken so as not to over -compact causing excessive stress on the walls. Compacting equipment shall be sized such that damage or displacement of the structure does not occur. The Contractor shall be responsible for repairing any damage to structures resulting from the compaction of the fill. All repairs shall be made at the Contractor's expense. 3.3 TOLERANCES A. Top surface of filling under roadways or bedding material shall be within 0.1 foot of the specified level. 13. Finish surfaces directly under concrete shall be finished to a tolerance of minus 1 - inch to plus zero -inch. C. Other areas shall be within 0.3 feet of the specified level and slopes shall be maintained such that ponding does not occur. 3.4 COMPACTION REQUIREMENTS A. Unless specified otherwise on the drawings the following minimum density requirements apply. General Fill: 95 percent of maximurn unit dry density obtained in accordance with ASTM D698. 3.5 FIELD QUALITY CONTROL A. Field inspection tests will be performed by the Engineer. Placement of fill over an area tested by the Engineer shall be at the Contractor's risk prior to notification by the Engineer that the test results are acceptable. l \Orchard Urrit Compressor StationtCttUREVB O2223Backfillirg.doc REVISION 0 $E Samuel Engineering, Inc. gid. ENCANA OIL & GAS (USA) INC. CONSTRUCTION SPECIFICATION 02223 ORCHARD COMPRESSOR STATION BACKFILLING PROJECT NO.: 5023-01 REV. DATE: May 18, 2005, PAGE 5 B. If tests indicate work does not meet specified requirements, the Contractor shall rework the area. Reworking the area and retesting shall be at the Contractor's expense. END kOrcpe'i Unit Compressor Station1C11XtREVB102223Backfilling.doc REVISION 0 SE Samuel Engineering. Inc. Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Tel: 303-714-4840 Englewood, Colorado 80111-3227 Fax: 720-482-8327 Orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM FOR EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Project No.: 5023-01 / Date Date Date Date Rev. No. By Revisions Approval I ]ale 0 DJB Issued for Construction Engineering • Project Controls • Estimating • Construction Management ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM REV. DATE: MAY 18, 2005, PAGE 1 PART 1 - GENERAL 1.1 SECTION INCLUDES A. Design, supply and install the concrete masonry units as shown on the drawings, B. Furnishing grout, mortar and equipment necessary to construct the masonry walls. C. Reinforcement, anchorage and accessories. 1.2 REFERENCE SPECIFICATIONS A. Specification 03200 Concrete Reinforcement 1.3 REFERENCE STANDARDS A. B. C. D. E. F. G. H. J. K. L. ACI 530 ASTM A82 ASTM A615 ASTM C5 ASTM C90 ASTM C144 ASTM C150 ASTM C207 ASTM C270 ASTM C404 ASTM C476 IMIAC Building Code Requirements for Masonry Structures Steel Wire, Plain, for Concrete Reinforcement Deformed and Plain Carbon Steel Bars for Concrete Reinforcement Quicklime for Structural Purposes. Loadbearing Concrete Masonry Units, Aggregate for Masonry Mortar. Portland Cement. Hydrated lime for Masonry Purposes. Mortar for Unit Masonry. Aggregates for Masonry Grout Grout for Masonry International Masonry Industry All -Weather Council: Recommended Practices and Guide Specification for Cold Weather Masonry Construction. 1.4 QUALITY ASSURANCE A. Installer Qualifications 1. Company specializing in performing the work of this Section with minimum 5 years documented experience. I.1Orchard Urns Compressor StahonlC100REVal04340Reiniorced.UmtMasonrySyslem docREVISION 0 5E Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM REV. DATE: MAY 18, 2005, PAGE 2 13. Manufacturer 1. Selection of appropriate manufacturer at the discretion of the Contractor. However, the units shall conform to the requirements in Part 2. C. The work of this specification shall be completed in accordance with the requirements of ACI 530. 1.5 PRODUCT, DELIVERY, STORAGE AND HANDLING A. Deliver, store, and handle all materials such that the inclusion of foreign materials and the damage of materials by water or breakage is prevented. B. All masonry units shall be stored on the job so that they are kept off the ground and protected from the elements. Wetting of units shall not be permitted. C. Packaged materials shall be delivered and stored in original packages until ready for use. D. Packages of materials showing evidence of water or other damage shall be rejected. PART 2 - PRODUCTS 2.1 MATERIALS A. Concrete Masonry Units 1. Hollow Load Bearing Block Units: ASTM C90, Grade N, Type 1 - Moisture Controlled, minimum average compressive strength of 1500 psi. 2. All masonry units shall be sound, free of cracks or other defects that would interfere with the proper placing of the unit or impair the strength of construction. Minor cracks incidental to the usual method of manufacture, or minor chipping resulting from customary methods of handling, shipping and delivery shall not be deemed grounds for rejection. 3. Proper masonry units shall be used to provide for all windows, doors, bond beams, lintels, pilasters, etc., with a minimum unit cutting. B. Mortar 1. Mortar shall conform to ASTM C270, Type N. 2. All mortar shall be freshly prepared and uniformly mixed and be of spreadable, workable consistency. 3. Mortar shall be retempered with water as required to maintain high plasticity. Reternpering on mortar boards shall be done only by adding water within a basin formed with the mortar and the mortar worked into the water. Any mortar which is unused after one and one-half hours from the initial mixing time shall not be used. MCI -chard Unit Corepressor Stetioi*C1DOREVBVO4340Reir fcedUnitMesonrySystem.docREVISION 0 $E Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM REV. DATE: MAY 18, 2005, PAGE 3 4. After all ingredients are in the batch mixer they shall be mechanically mixed for not less than three minutes. 5. If mortar is to be colored, inert coloring pigments may be used, but not to exceed six percent by weight of cement. 6. The use of fire clay, rock dust, dirt and other deleterious materials is prohibited in mortar. C. Grout 1. Grout shall conform to ASTM C476 and shall have a minimum strength of 2,000 psi. D. Cement 1. Cement shall be Type 1 Portland Cement conforming to ASTM 0150 E. Lime 1. Hydrated lime shall conform to ASTM C207. 2. Quicklime shall conform to ASTM C5. F. Aggregate 1. Aggregate shall be sharp, clean, and well graded and free of injurious amounts of dust, lumps, shale, alkali, surface coatings and organic matter. 2. Aggregate for mortar shall conform to ASTM C144. 3. Aggregate for grout shall conform to ASTM C404. G. Admixture 1. The use of admixtures shall not be permitted in mortar or grout unless approved by the Engineer. H. Water 1. Water shall be free of deleterious quantities of acids, alkalis and organic materials and shall come from a supply approved by the Engineer. I. Reinforcing Steel 1. Steel reinforcing shall conform to ASTM A615, Grade 60. 2. Wire reinforcement shall conform to ASTM A82. 3. Reinforcement shall be clean and free from loose rust, scale and dirt and any coatings that reduce bond. P.\Orchard Unit Compressor StauoreCt00REV8104340ReinforcedUniIMasonrySystem.do4REVISION 0 CE Samuel Engineering, Inc. ENCANA OIL 8 GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM REV. DATE: MAY 18, 2005, PAGE 4 PART 3 - EXECUTION 3.1 EXAMINATION A. Verify that field conditions are acceptable and are ready to receive work. B. Verify items provided by other sections of work are properly sized and located. C. Verify that built-in items are in proper location and ready for roughing into the masonry work. D. Beginning of installation means installer accepts existing conditions. 3.2 PREPARATION A. Provide temporary bracing during installation of masonry work and maintain it in place until building structure provides permanent bracing. 3.3 COURSING A. Establish lines, levels, and coursing. Protect form displacement. B. Maintain masonry courses to uniform dimension. Form vertical and horizontal joints of uniform thickness. 3.4 PLACING AND BONDING A. Lay hollow masonry units with face shell bedding on head and bed joints. B. Masonry shall not be started when the horizontal and vertical alignment of the foundation is out of plumb or line 1 inch or more. C. Buttering corners of joints or excessive furrowing of mortar .joints is not permitted. D. Remove excess mortar as work progresses. E. Interlock intersections and external corners. F. Isolate masonry partitions from vertical structural framing members with a control joint. G. Isolate top joint of masonry partitions from horizontal structural framing members and slabs or decks with compressible joint filler. H. The starting joint on foundations shall be laid with full mortar coverage on the bed joints, except that the area where the grout occurs shall be free from mortar so that the grout will be in contact with the foundation. I:lOrchard Unit Compressor Ststun\C10DREVS10434DReinforcedUni4MesonrySystern docREVIS ION 0 SE Samuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM REV. DATE: MAY 18, 2045, PAGE 5 Mortar joints shall be straight, clean and uniform in thickness and shall be tooled. Unless otherwise specified, in hollow unit masonry, the horizontal and vertical mortar joints shall be 3/8 inch thick. J. Vertical head joints shall be butted for a thickness equal to the face shell of the unit and these joints shall be shoved tightly so that the mortar bonds well with both units. If it is necessary to remove a unit after it has been set in place, the unit shall be removed from the wall, cleaned and set in fresh mortar. L. Concrete building units shall be laid with full head and bed joints. M. Unless otherwise specified, all walls shall have struck flush points. N. Care shall be taken to prevent grout and mortar stains. Keep wall continuously clean; if grout does run over, clean immediately. C7. All masonry shall be laid true, level and plumb in accordance with the drawings. P. The masonry units shall be cut accurately to fit all plumbing, ducts, openings, electrical work, etc., and all holes are to be neatly patched. Q. No construction support shall be attached to the wall except where specifically permitted by the Engineer. R. The top surface of the concrete foundation shall be clean and free of laitance and the aggregate exposed before starting masonry construction. S. Where no bond pattern is shown, the wall shall be laid up in straight, uniform courses with regular half or running bond. T Protect all sills, ledges and offsets from mortar droppings or other damage during construction. U. Where masonry unit cutting is necessary, all cuts shall be neat and true and made with a masonry saw. 3.5 REINFORCING A. When a foundation dowel does not line up with a vertical core, it shall be sloped at not more than one horizontal to six vertical. Dowels shall be grouted into a core in vertical alignment even though it is in an adjacent cell to the vertical wall reinforcing. B. Reinforcing bars shall be straight except for bends around comers and where bends or hooks are detailed on the plans. I :\Orchard Unit Compressor at,onlCIOOREV61{44340ReinforeedUnithlasanrySystem.doc EE1i SSION 0 $E Samuel Engineering, Inc. wo F, , # is sowhons ENCANA ®IL & GAS (USA) INC, ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM REV. DATE: MAY 18, 2005, PAGE 6 G. When full length vertical bars are used, they shall be held in position at top and bottom at intervals not exceeding 192 bar diameters of the reinforcement. D. Reinforce horizontal joints every second course in the walls or partitions of masonry units above grade, unless otherwise noted, for the full length of the joints above and below openings. E. Horizontal reinforcing shall be laid on the webs of bond beam units and shall be solidly grouted in place. Reinforcing in channel units shall be spaced off the bottom of the unit. F. Vertical reinforcing shall have a minimum clearance of/4 inch frons the masonry. G. Wire reinforcement shall be completely embedded in mortar or grout. Mortar joints with wire reinforcement shall be at least twice the thickness of the wire. H. Wire reinforcement shall be lapped at least 8 inches at splices and shall contain at least one cross wire of each piece of reinforcement in the lap distance. 3.6 GROUTING A. Reinforcement shall be in place before grouting starts. B. Mortar droppings shall be kept out of grout space. C. All grout shall be puddle or vibrated in place to insure full penetration into mortar joints and around steel. D. Vertical cells to be filled shall have vertical alignment to maintain a continuous unobstructed cell area not less than 2 inches by 3 inches. E. Cells containing reinforcement shall be solidly filled with grout and pours shall be stopped 1 inch below the top of a course to form a key for joints. Grouting of beams over openings shall be done in one continuous operation. F. The tops of ungrouted cells under a horizontal masonry beam shall be covered with metal lath or other approved materials to confine the grout fill to the beam section. G. All cells containing reinforcement, anchor bolts and inserts shall be grouted solid. Walls that are to be fully grouted shall be indicated on the drawings. H. Spaces around metal door frames and other built-in items shall be filled solid with grout or mortar. I. Grout shall be poured in not more than 4 foot depths. Wait approximately one- half hour after a pour then pour another 4 foot depth. The full height of each section of a wall shall be poured in one day. rlOrchard Und Compressor SlationlC100REVBl04340Re+nforcedUni(MasonrySystem.docREViSION 4 SE Samuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 04340 REINFORCED UNIT MASONRY SYSTEM REV. DATE: MAY 18, 2005, PAGE 7 3.7 WALL CLEANING AND PROTECTION A. Concrete scum and grout stains on the walls shall be removed immediately. B. After walls are constructed, they shall not be saturated with water for curing or for any other purposes. C. At the conclusion of the masonry work, the mason contractor shall clean all masonry, remove scaffolding equipment used in the work, and all debris, refuse and surplus masonry material shall be removed from the premises. ID. Without damaging completed work, provide boards at exposed external corners that may be damaged by construction activities. 3.8 TOLERANCES A. Maximum Variation From Alignment of Columns: 1/4 inch. B. Maximum Variation From Unit to Adjacent Unit: 1/32 inch. C. Maximum Variation From Plane of Wall: '/4 inch in 10 feet and %z inch in 20 feet or more. D. Maximum Variation From Plumb: 1/4 inch per story non -cumulative; Yz inch two stories or more. E. Maximum Variation From Level Coursing: 1/8 inch in 3 ft.; '/4 inch in 10 ft.; '/2 inch in 30 ft. F. Maximum Variation of Joint Thickness: 1/8 inch in 3 feet. G. Maximum Variation From Cross Sectional Thickness of Walls: /4 inch. PART 4 — TESTS, INSPECTIONS AND REPORTS 4.1 INSPECTIONS A. All work, stages of work, materials and processes, shall be made available for, and be subject to, the inspection and approval of the Engineer. B. Approval by the Engineer shall not relieve the Contractor of responsibility for the work. C. Special inspection shall be provided during construction where noted on the drawings. END I. Orchard Unit Comp inforcedUnitMasSE Samuel Engineering, Inc. StationlC1OOREVB464340Re anrYSystem ddcREVI$I�i+i 0 w., nrvr.nn-; Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Tel: 303-714-4840 Englewood, Colorado 80111-3227 Fax: 720-482-8327 Orig /Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 05140 STRUCTURAL STEEL ERECTION FOR EnCana Oil & Gas (USA) Inc. Orchard Compressor Station Project No.: 5023-01 Date Date Date Date Rev. No. By Revisions Approval Date 0 DJB Issued for Construction Engineering • Project Controls • Estimating • Construction Management ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05140 STRUCTURAL STEEL ERECTION REV. DATE: MAY 18, 2005, PAGE 1 PART 1 - GENERAL 1.1 SECTION INCLUDES A. Site erection of structural steelwork and the performance of all operations necessary to complete this work, including remedial work. 1.2 RELATED SECTIONS A. Specification 05130 - Structural Steel Fabrication 1.3 REFERENCES A. AISC 316 Manual of Steel Construction B. AWS D1.1 Structural Welding Code 1.4 SUBMITTALS A. Prior to commencing work on site, submit the proposed steelwork erection procedure and program, including all relevant drawings, charts and schedules for the Owner's approval. 1.5 QUALITY ASSURANCE A. Erect structural steel members in accordance with AISC — Code of Standard Practice for Steel Buildings and Bridges. B. Maintain one copy of the contract documents including applicable codes on site. 1.6 QUALIFICATIONS A. Erector: Company specializing in performing the work of this Specification with minimum 5 years documented experience. PART 2 PRODUCTS Not Used PART 3 EXECUTION 3.1 EQUIPMENT A. The Contractor shall be responsible for ensuring that all equipment is positioned and used in such a way that loads taken are at all times within the safe limits of the equipment itself and of the ground or supports on which the equipment rests. I:1OrchardUnit Compressor Station \C1OOREV6 5144SteelErection.doc REVISION 0 SE} Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION • PROJECT NO.: 5023-01 • • CONSTRUCTION SPECIFICATION 05140 STRUCTURAL STEEL ERECTION REV. DATE: MAY 18, 2005, PAGE 1 3.2 FIELD MEASUREMENTS AND CHECKS A. Verify that field measurements are as shown on the drawings. B. Check structural members, and their related parts to be erected, against the Engineer's approved detail and arrangement drawings. C. Inspect the structural steel before commencing with erection. This inspection shall be for damaged members or those which appear by visual inspection to be twisted or distorted. The Contractor shall report immediately to the Engineer if any of the above is discovered. D. Check the layout with respect to location and level of all anchor bolts or prepared foundations. E. Check that all foreign matter is removed from the anchor bolt pockets. F. Check that bolts are undamaged and their threads are adequately greased and are complete with all necessary nuts and washers. G. Verify that field conditions are acceptable and are ready to receive work. H. Where new structural steel is required to be attached to existing structural steel, it shall be verified that existing conditions as shown on the design drawings are correct. Any discrepancy between the design drawings and existing conditions shall be brought to the attention of the Engineer. I. Commencement of erection indicates Contractor accepts existing conditions 3.3 TEMPORARY WORKS A. The Contractor shall be responsible for the stability of partially erected structures and shall ensure that temporary works do not cause adverse stress conditions in any structural members. If it is required that any part of the structural steel be temporarily omitted to allow for the installation of equipment or other work, the structural steel so affected shall be installed in accordance with erection procedures and sequences to be outlined by the Engineer for erection of that portion of steel. B. All steel shall be erected in accordance with the appropriate AISC specifications. Temporary shores and braces shall be used during progress of the work. Unless otherwise specified, the permanent stability of steelwork is dependent on other parts of the building, such as walls and roofs. The temporary shores and braces shall be maintained in place until these other parts of the building are complete, able to withstand imposed loads as a composite structure and safe to remove such shores and braces. 110rchard Unit Compressor Stalion1C1OOREVB145140SteelErection.doc REVISION 0 Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION 0 PROJECT NO,: 5023-01 C. Approval shall be obtained from the Engineer before any welding, drilling or oth modification is made to the structural steelwork to accommodate temporary wort CONSTRUCTION SPECIFICATION 05140 STRUCTURAL STEEL ERECTION REV. DATE: MAY 18, 2005, PAGE 1 3.4 TOLERANCES A. Steelwork shall be erected to the lines and levels shown on the approved drawing and the tolerances shall not exceed those given in the "Code of Standard Practice or Steel Buildings and Bridges" of the AISC Manual of Steel Construction. 3.5 PACKERS A. Packers and shims shall be of mild steel flat bar plate and shall be clean, flat and free from burrs or other imperfections. B. The number of shim packs shall be kept to a minimum. C. Packers shall be of such size as to cover as much of the area of the packed joint as is practicable. Packers may be notched to facilitate assembly. D. Where packers and shims are supplied with the structural steelwork, they shall be assembled in accordance with the approved shop drawings. E. Packers and shims shall not be used in joints using High -Strength Structural bolts unless they are so shown on the Engineer's drawings and supplied with the steelwork. 3.6 PERMANENT FIXING A. No permanent bolting, welding or grouting shall be carried out until the part of the structure that will be stiffened thereby has been properly aligned, levelled and plumbed. 3.7 BOLTING A. High-strength bolts shall be installed in accordance with the AISC Specification for Structural Joints Using ASTM A325 or ASTM A490 Bolts with bolts being tightened to the correct tension by the turn -of -nut method or by use of load indicator washers. The amount of nut rotation required from the snug tight condition is shown in Table 5 of the above mentioned Specification. Snug tight is defined as the tightness attained by a few impacts of an impact wrench or the full effort of a man using an ordinary spud wrench. The outer face of the nut and the protruding part of the bolt shall be marked by paint or crayon in the snug tight position so that the actual final nut rotation can be determined by inspection. B. High-strength bolts shall only be used once. Any bolt which has been tightened and subsequently removed shall not be reused. t i3Orcti rd unit Compressor Ststion1C100REVAI[75160SteetErectaon.00c REVISION 0 $� Samuel Engineering, Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION • PROJECT NO.: 5023-01 C. Bolts and nuts which, on visual inspection, show any evidence of physical defects shall be removed and replaced. • • CONSTRUCTION SPECIFICATION 05140 STRUCTURAL STEEL ERECTION REV. DATE: MAY 18, 2005, PAGE 1 D. Final inspection of bolt tightness by the use of an "Inspection Wrench" is left to the discretion of the Engineer. 3.8 WELDING A. Welded surfaces shall be cleaned as outlined in AWS D1.1 and joint surfaces shall be free of fins and burrs. Finished members shall be true to line and free from twists, bends and open joints. Where a structural member joins a gusset plate, the weld shall go all around the member. B. Where specialized welding is required that does not conform to the above codes, the necessary procedure and instructions shall be indicated on the Engineer's drawings. C. To enable complete assemblies to be erected, site welding of individual members attached to main shop fabricated pieces shall be permitted as indicated on the Engineer's and fabrication drawings. The individual members shall be welded to their main components at ground level. 11 Adequate mobile welding facilities shall be provided for field operations. E. When the occasion arises due to discrepancy, inaccuracy, or other reasons, field welding may be used. All relevant details and procedures must be approved by the Engineer before site welding may commence. Field welding shall be done by certified welders who are required to submit copies of current certificates to the Owner. Field welding shall conform to AWS D1.1. 3.9 GROUTING A. Grout for base plates shall be of two types, the flowable non -shrink type, which shall be used only in the locations shown on the drawings, (e.g. machinery base plates) and dry pack mortar in all other locations. B. Flowable Non -Shrink Grout: "Embeco" 885 grout or approved equivalent flowable non -shrink grout shall be mixed and placed in accordance with the manufacturer's instructions. C. Dry Pack Mortar Grout: "Five Star" grout or approved equivalent cementitious non - sag (trowelable) grout shall be mixed and placed in accordance with the manufacturer's instructions. I:lOrcharr>i Unit Compressor Station1C1UOREVg145140SteelEre dion.doc REVISION 0 SE Sarnuel Engineering. Inc. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05140 STRUCTURAL STEEL ERECTION REV. DATE: MAY 18, 2005, PAGE 1 D. The mortar shall be rammed under the full area of the baseplate, whether by ramming from opposite sides simultaneously or ramming against a fixed form. The edges of the mortar shall be neatly tapered at 45 degrees from the underside of the base plate edge to the concrete. E. Anchor Sleeves: All anchor bolt sleeves shall be filled with fluid "Five Star" grout or approved equivalent cementitious grout mixed, placed in accordance with the manufacturer's instructions and allowed to set prior to grouting of baseplates. 3.10 SITE MODIFICATIONS OF STRUCTURAL STEELWORK A. No modification that is liable to affect the strength of a structural member, the efficiency of a joint, or the integrity of the structure shall be made without the prior approval of the Engineer. Such field fabrication and sub -assembly as may be necessary shall conform to the requirements of Section 05130, Structural Steel Fabrication. B. The procedures and methods proposed for modification work shall be submitted in writing to the Engineer. The Engineer's approval shall also be in writing, C. Site cutting shall be, wherever possible, by a mechanical process. Where flame cutting is necessary, an allowance shall be left for grinding of ragged edges to ensure a smooth finish. D. Holes for bolts shall be drilled. Flame cutting of holes will not be permitted. Correction of misaligned holes may be achieved by reaming or, subject to approval by the Engineer, by filling badly misaligned holes with weld metal, grinding flush and re - drilling in the correct position. E. Where welded fitments need repositioning, the existing weld shall be removed, where possible, by chipping, grinding or gouging. When the fitment has been removed any undercut areas shall be built up with weld metal and the affected area shall be ground smooth. Fitments damaged during removal shall be renewed. Fitments shall be replaced using the same attachment method and detail as specified on the approved detail drawings. F. Wherever remedial work has been carried out, the affected area shall be cleaned. Burrs, slag and weld splatter shall be removed and the paintwork made good. 3.11 STORAGE AND HANDLING A. The steelwork shall be stored and handled so that members are not subjected to possible damage or excessive stresses. Care shall be taken to minimize ponding of water and the collection of grease and foreign matter on the steelwork. Store all steel above ground on platforms, skids or similar supports. 1:10rchard Unit Compressor SlationtC1OOREVBI0514DSteelErection.doc REVISION 0 SE Samuel Engineering, Inc. • • ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05140 STRUCTURAL STEEL ERECTION REV. DATE: MAY 18, 2005, PAGE 1 B. The Contractor shall ensure that, wherever possible, steelwork for each plant section is stored in one particular area and laid out for ease of erection. C. Bolts, nuts, washers and other miscellaneous items shall be checked and stored under cover until required for use. D. Contractor shall use care in handling structural steel during unloading, storage and erection. If, in the opinion of the Engineer, the structural steel has been damaged or its serviceability has been impaired, it shall be removed and replaced at the Contractor's expense. 3.12 PAINTING A. After erection is complete, touch-up paint, for all structural steel damaged during erection, all welds, nuts and bolts, shall be applied using the same paint as used in the shop. B. Remove all paint in the area affected by means of power tools if possible, or if not, hand tools to achieve a clean metal surface. Feather the edges of the affected area and wet sand painted areas which are to be repainted. C. Within 4 hours of completion of surface preparation paint shall be applied in accordance with the requirements in Specification 05130. D. Touch-up of galvanized steel shall be done in accordance with Technical Specification 05130. 3.13 TESTS AND INSPECTION A. Every facility shall be provided for inspection of the work by the Engineer. B. Inspection of welding and welders as required by the Engineer shall be in accordance with the American Welding Society Codes and Specifications. The Contractor shall provide the Engineer with adequate equipment and labor to test high-strength bolted connections. 3.14 SAFETY A. All possible precautions to protect the Owner's and Engineer's personnel, as well as their own personnel, shall be observed by the Contractor. END I:IOrchard Unit Compressor Station\C 100REVB105140SteelErection.doc REVISION 0 SE Samuel Engineering. Inc. Samuel Engineering, Inc. We Provide Solutions 5775 DTC Boulevard, Suite 200 Englewood, Colorado 80111-3227 Orig./Lead Eng.: Project Engineer Approval: Project Manager Approval: Client Approval: CONSTRUCTION SPECIFICATION SPECIFICATION 05I30 STRUCTURAL STEEL FABRICATION FOR EnCana Oil & Gas (USA) Inc, Orchard Compressor Station Project No.: 5023-01 Rev. No. By Revisions Date Date Date Date Approval Tel: 303-714-4840 Fax: 720-482-8327 Date 0 DJB Issued for Construction Engineering ♦ Project Controls • Estimating Construction Management • ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 PART 1 - GENERAL 1.1 SECTION INCLUDES CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 1 A. Fabrication and supply of ail structural steelwork and the performance of all operations to complete the work. 1.2 RELATED SECTIONS A. Specification 05140 — Structural Steel Erection 1.3 REFERENCES A. ASTM A6 B. ASTM A36 C. ASTM A53 D. ASTM 108 E. ASTM A123 F. ASTM A153 G. ASTM A242 H. ASTM A283 I. ASTM A307 J. ASTM A325 K. ASTM A490 L. ASTM A500 M. ASTM A50I N. ASTM A563 0. ASTM A568 General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling Carbon Structural Steel Pipe, Steel, Black and Hot -Dipped, Zinc -Coated, Welded and Seamless Steel Bar, Carbon and Alloy, Cold -Finished Zinc (Hot -Dipped Galvanized) Coatings on Iron and Steel Products Zinc Coating (Hot -Dip) on Iron and Steel Hardware High -Strength Low -Alloy Structural Steel Low and Intermediate Tensile Strength Carbon Steel Plates Carbon Steel Bolts and Studs, 60.000 psi Tensile Strength Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength Structural Bolts, Alloy Steel, Heat Treated, 150 ksi Minimum Tensile Strength Cold -Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes Hot -Formed Welded and Seamless Carbon Steel Structural Tubing Carbon and Alloy Steel Nuts Steel, Sheet, Carbon, Structural and High -Strength, Low- Alloy, Hot -Rolled and Cold -Rolled General Requirements 1:40rchard Unit Compressor Stetior C1QOREVB#05130SteeWFabricatiOn.doc REVISION 0 SE Samuel Engineering. Me ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 P. ASTM A572 Q. ASTM A588 R. ASTM A780 S. ASTM A992 T. ASTM A1008 U. ASTM A1011 V. ASTM F436 W. ASTM F959 X. AWS A2.4 Y. AWS D1.1 Z. AISC 316 AA. AISC 326 BB. SSPC 1.4 SUBMITTALS CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 2 High -Strength, Low -Alloy, Columbium -Vanadium Structural Steel High Strength Low Alloy Structural Steel with 50 ksi Minimum Yield Point to 4 in. Thick Repair of Damaged and Uncoated Areas of Hot -Dip Galvanized Coatings Structural Steel Shapes Steel, Sheet and Strip, Cold -Rolled, Carbon, Structural, High -Strength Low -Alloy and High -Strength Low -Alloy with Improved Formability Steel, Sheet and Strip, Hot -Rolled, Carbon, Structural, High -Strength Low -Alloy and High -Strength Low -Alloy with Improved Formability Hardened Steel Washers Compressible, Washer -Type Direct Tension Indicators for Use with Structural Fasteners Standard Welding Symbols Structural Welding Code Manual of Steel Construction Detailing for Steel Construction Steel Structures Painting Council A. Submit to the Engineer two (2) copies of all erection and shop drawings pertaining to all shop fabrication and field erection for review before fabrication. 13. All final, as fabricated, erection and shop drawings, stamped "Certified for Construction" shall be sent to both the Engineer and to the Site prior to or concurrent with shipment of the fabricated steel. Drawing submittal shall be as follows: 1. Engineer — Two (2) copies each of all erection and shop drawings. 2. Site — One (1) CD, AutoCAD 2002 format, or newer, containing all erection drawings and two (2) copies each of all erection and shop drawings. SE Samuel Engineering. Inc. 1 (Orchard Unit Compressor Station\ C'IaOREVSLU5130Steelfabrication do REVISION ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABR1CATON REV. DATE: MAY 18, 2005, PAGE 3 C. Submit Manufacturer's Mill Certificate or Mill test reports showing that the materials delivered to the jobsite meet or exceed specified requirements or, in lieu of submitting Manufacturer's Mill Certificate or Mill test reports, submit an affidavit stating that the materials and products which have been used in fabrication conform to the applicable material or product standards called for by the design drawings or specifications. D. Submit welders certificates certifying welders employed on the work, verifying qualifications within the previous 12 months. E. Submit a schedule for detailing and fabricating the steelwork prior to commencement of detailing work. 1.5 QUALITY ASSURANCE A. Fabricate structural steel members in accordance with AISC — Specification for Structural Steel Buildings. 1.6 QUALIFICATIONS A. Fabricator: Company specializing in performing the work of this Specification with minimum five (5) years documented experience. B. Prepare "Erection Diagrams" and Shop details under direct supervision of a Professional Engineer experienced in design and detailing procedures for this work. PART 2 - PRODUCTS 2.1 MATERIALS A. Wide Flange and Structural Tee Shapes: ASTM A992, 50 ksi minimum yield strength. B. Other Structural Shapes: ASTM A36. C. Steel Bars and Plate: ASTM A36 or ASTM A572, 50 ksi minimum yield strength where noted on the drawings. 13. Structural Tubing: ASTM A500, Grade B or ASTM A501, Grade B. E. Structural Pipe: ASTM A53, Grade B. F. Handrails: ASTM A53, Grade B, Schedule 40. G. Shear Stud Connectors: ASTM A108, Grade 1015. H. Bolts, Nuts and Washers 1. High Strength Bolts: ASTM A325, Type I Heavy Hex Bolts with ASTM A563 Hex Nuts and ASTM F436 Washers, galvanized per ASTM A153. 5€ Samuel Engineering. Inc. 1Orchard Unit Compressor Station1C100REVB105530SteelFabricat on doe REVISION 0 ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 4 Common Bolts: ASTM A307, Grade B Bolts with ASTM A563, Grade DH Heavy Hex Nuts and ASTM F436 Washers, galvanized per ASTM A153. L Load. Indicating Washers: ASTM F959, galvanized per ASTM A153. J. Grating and Stair Treads: ASTM A1011, galvanized per ASTM A123. K. Welding Materials: AWS DI.1, type required for materials being welded. Tensile strength range of 70 ksi minimum. L. Metal Decking: ASTM A653, Grade A. M. Cold -Formed Sections: ASTM A1008, 55 ksi minimum yield strength. 2.2 BOLTS A. Bolt heads and nuts shall be hexagonal except for temporary erection bolts which shall be provided with square heads. Threads and machined surfaces shall be greased. Nuts shall be capable of being turned though the full thread length by hand. B. After tightening the bolt, at least one (1) thread and not more than six (6) threads shall project beyond the nut. C. Where a bolt head or nut bears on a tapered flange, it shall be provided with a tapered washer. D. ASTM A307 bolts shall be provided with self-locking nuts. E. All bolts, nuts, hardened washers, and load indicating washers shall be galvanized in accordance with ASTM A153. All galvanized bolts shall be supplied with a thread lubricant such as beeswax. F. A 5% overage shall be provided for all bolts, nuts, hardened washers, and load indicating washers used in field bolted connections. All field bolts shall be ordered and shipped so as not to delay erection of steel. 2.3 HANDRAIL A. Handrail and posts shall be as detailed on the drawings and shall be made without fittings. Bends shall be smooth without kinks or collapsed wall sections and all welds shall be ground where necessary to provide a smooth handrail surface. B. Railings and toe boards shall be provided on all open sides of platforms and walkways. C. Railings and posts shall have a smooth finish with rough edges and sharp corners removed. All miters shall be ground smooth and free of weld spatter. 1). All supplementary base plates, straps, bolts and pins for attachment of railing shall be provided. SE Samuel Engineering, Inc. I:iOrchard Unit Compressor Station\ClOOREVBIO513OSlee1Fabricatian.dac REVISION 0 ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 5 E. All handrail and toeboards shall be galvanized. 2.4 GRATING AND STAIR TREADS A. Grating and stair treads shall be of welded construction and of the size noted on the drawings. B. Grating shall be furnished in reasonable size pieces, avoiding patchwork, and with due regard for neat overall appearance. Sections shall be fabricated so that longitudinal and cross bars in adjacent sections shall, when erected end to end, be in line. C. Shop cuts shall be provided to make the grating fit around structural members, equipment, and piping. All pieces cut for piping and equipment or abutting building siding shall be banded. Banding strips shall project 4 in. above the top of the grating to form a curb and shall be a minimum of 3/16 in. thick. Grating shall be split around all holes into easily removable sections. D. No. 14 gauge stainless steel saddle -type clips shall be provided for attachment of grating to structural steel. A minimum of four (4) clips shall be provided for each panel except where the grating spans over one or more intermediate beams in which case two (2) additional clips shall be provided for each beam that supports the panel. Grating shown as removable on the drawings shall be fastened by a minimum of four (4) clips per panel. E. Provide 'Id in. diameter self -tapping stainless steel screws for attachment of clips to structural steel. A 5% overage shall be provided for the self -tapping screws. All screws shall be ordered and shipped so as not to delay erection of steel. F. Open ends of grating at head of stairs shall have checkered plate nosing. G. Cast, abrasive, non -slip nosings shall be provided on all stair treads and shall extend approximately the full width of the tread, 2.5 LADDERS A. Ladders shall be fabricated from ASTM A36 bar rails and as shown on the drawings. B. All exterior ladders shall be galvanized. PART 3 - EXECUTION 11 CONNECTIONS A. Connections shall be developed from the AISC Manual of Steel Construction and the Specification for Structural Joints Using ASTM A325 and ASTM A490 Bolts. Wherever possible, standard connections, as shown in Tables II through IV of Part 4 of the AISC Manual of Steel Construction, shall be used. 1'1Orchard Unit Compressor S9ationlC100REVB1051a0SteeiFabncation doc REVIS4ON 0 SE Samuel Engineering, Inc. , -..oda ,Olurror, ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 6 B. Connections for joints which resist reversible loads, such as those for vertical and horizontal bracing, girder to column connections, and other members where axial loads are indicated on the drawings, shall be designed as slip critical. Such connections shall consider a minimum +/- 20 kip axial load unless a higher load is indicated on the drawings. Connections shall be designed using AISC Allowable Stress Design for the loads shown on the drawings with no allowable increases for wind or seismic. C. Connections for joints which do not resist reversible loads, such as minor beam connections, shall be designed as bearing type connections with the bolt threads excluded from the shear plane. D. Where beam design reactions are not indicated on the drawings, connections shall be designed to support one-half the total uniform load capacity shown in the Allowable Uniform Load Tables, Part 2 of the AISC Manual of Steel Construction. E. The minimum number of bolts to be used in beam end connections shall be as follows: Beam Depth (in.) Rows of Bolts in Outstanding Legs of Connection Angles 36 9 33 8 30 7 27 6 24 5 21,18arid 16 4 14and 12 3 10and8 2 7 and under 1 The minimum number of bolts to be used in connections for channel members shall be the same as that for a beam of the same depth. F. Single -sided clip angle connections shall not be used. G. All primary bracing shall be made using a minimum of two (2) bolts in double shear or four (4) bolts in single shear. Connections for single angle stability bracing shall be made using two (2) bolts in single shear. $E Samuel Engineering. Inc. 1 \Orchard ural CompressorStatron1C1COREV6405130SteelFebricatic,n.doz REVISION 0 ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 7 H. Members composed of two or more rolled shapes separated by intermittent fillers shall be connected at these fillers in accordance to the AISC Specification for Structural Steel Buildings. 1. Connections for secondary members, such as stair stringers, ladders and handrails, may be made using % inch diameter ASTM A307 bolts. J. The minimum thickness for gusset plates and clip angles shall be 3/8 inch. K. Washers shall be provided per the requirements of AISC "Specification for Structural Joints Using ASTM A325 or A490 Bolts." L. Load indicating washers shall be provided for all high-strength bolts used in slip critical connections. M. Welded surfaces shall be cleaned, as outlined in AWS DI.1, and joint surfaces shall be free from fins and burrs. Finished members shall be true to line and free of twists, bends and open joints. All welded joints shall be fully seal welded. N. End plates, brackets, cleats, etc. on beams shall be true and square to their connecting elements. O. Shop connections shall be either welded or bolted using minimum % inch diameter A325 bolts with welded connections being the preferred type. P. Members with shop bolted connections shall be assembled to the same tolerances as shop welded members and all bolts shall be fully tightened before shipping. Q. High-strength bolts shall be installed in accordance with AISC "Specification for Structural Joints Using ASTM A325 or A490 Bolts," with bolts being fully pre- tensioned to the values identified in Table 4 of the same Specification. R. High-strength bolts shall only be used once. Any bolt which has been tightened and subsequently removed shall not be reused. S. All field connections shall be bolted using minimum % inch diameter A325 bolts. T. Clip angles used in field connections shall be shop welded or bolted to the greatest extent possible to minimize bolting in the field. 3.2 DETAILING A. Shop drawings shall indicate profiles, sizes, spacing and locations of structural members, openings, attachments, fasteners, and connections. Indicate welded connections with AWS A2.4 welding symbols and show net weld lengths. Indicate site welding details. B. Shop drawings shall include bills of material, weight lists, field bolt lists, erection diagrams and erection sequence. C. All shop drawings submitted unchecked or without erection drawings will be rejected. l lOrcharo Unit Compressor StatiortlC106REVB105130SteelFabrication.poc REVISION 0 5E Samuel Englneering. Inc :.• Y.or �n vnf •i �• � ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 8 3.3 SHOP DRAWING REVIEW A. Shop drawings will be reviewed only for general compliance with the contract documents. The "review" does not relieve the fabricator of the responsibility for the adequacy of connection design and details, the accuracy of the detailed dimensions or shop details nor the fit up of parts to be assembled. It does not relieve the Contractor of the responsibility for errors made in the design or details or for changes made from the Owner's drawings or specifications not covered by the Contractor' s written notification (or submitted sketches/drawings) to the Engineer and the Engineer's written acceptance (for revised construction drawings of such change). 3.4 MARKINGS A. Each piece of steelwork and metal items, including grating and checkered floor platework, shall be given a mark number which shall be shown on the erection drawings. B. All structural steel shall be prominently marked for identification with piece marks applied right side up on the end corresponding to the left end of the members detailed in the horizontal, or inclined position, and at the lower end for members that are detailed in the vertical position. This mark shall be used on all related schedules and documents. C. The full mark, as given on the drawing shall be handstamped in letters of 5/8 inch size. Small items where the above is impractical, such as shims, must be securely wired together and tagged with the tag bearing all the required information. 3.3 STRAIGHTNESS A. Any straightening of material, or bending to produce curvilinear forms shown on the drawings shall be done by methods that shall not injure the material, and be in accordance with approved procedures. Straightening of heavy structural rolled sections by flange heating and quenching is not acceptable. B. Any natural camber in beam members shall be turned up. 3.4 CUTTING A. Methods of cutting shall be by sawing, shear or gas flame cut provided that: 1. Hot sawing or gas cutting shall apply to members not required exact to length. 2. Ends of sections or edges of plates required to transmit direct bearing shall be accurately cold sawn or milled. 3. Plates thicker than `/4 inch whose edges are to be welded shall not be shear cut. 4. Shearing and punching shall produce clean, true lines and surface. 5. Miters shall be dressed smooth, neatly fitted and free of weld spatter. 1.10rcherd Unil Compressor Slation1C100REVBL0513OSteelFabncalion.doc REVISION 0 0 Samuel Engineering, Inc. !Vf 1.,. air So%eirnn ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 9 6. All re-entrant corners, including beam blocks shall be notch -free and radiused to a minimum of 3/8 inch. 3.5 DRILLING AND BORING BOLT HOLES A, The component parts for composite members shall be securely fastened together by tack welding or clipping before drilling and the holes drilled by one pass of the drill at each hole through the number of thicknesses. The parts shall then be separated and burrs removed. B. Finished holes shall not be more than 1/16 inch in diameter larger than the bolt passing through them, unless otherwise indicated on the drawings. All burrs shall be removed. C. Holes for tapping shall be first drilled to the tapping size. D. Holes through tubular members shall be lined with sleeves. The internal diameter of the sleeve shall be specified on the drawings. The sleeve shall project beyond the sides of the tubular members and an external fillet weld run around the perimeter of the sleeve to seal the gap between the sleeve and the wall of the tubular member. The projecting ends of the sleeve shall then be ground flush and tangential to the outside of the tubular members and at right angles to the longitudinal axis of the bolt passing through the sleeve. E. Holes for bolts shall not be made by a gas cutting process. 3.6 WELDING A. Welding shall use E70XX electrodes for manual shielded metal arc welding and class F7X-EXXX series electrodes for submerged arc welding and shall be in accordance with AWS D1.1, which covers the necessary requirements of details, workmanship, qualification of personnel and procedures and inspection. B. Where specialized welding is required that does not conform to the above code, the necessary procedures and instructions will be indicated on the Engineer's drawings. C. Welds performed by the Fabricator shall be inspected by non-destructive methods as follows: (These requirements are intended as minimum requirements and may be supplemented by notes on design drawings.) Non-destructive examination procedures, techniques and acceptance standards (i.e., ultrasonic, magnetic particle, dye penetrant and visual) as noted below shall be in accordance with Sections 6 and 8, AWS D1.1. Material to be welded (plates and shapes) shall be visually inspected for inclusions and defects prior to welding. 1. All full penetration welds shall be 100% ultrasonically inspected. Where I:tgrchard Unit Compressor Station1C1OCREVB1051303teeIFabfCatian.dac REVISION 0 $E Samuel Engineering, Inc ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 10 ultrasonic inspection is impossible, i.e., due to construction configuration or inaccessibility, magnetic particle inspection or dye penetrant inspection may be used in lieu of ultrasonic inspection with prior written approval of the Engineer. 2. All other welds, including fillet and partial penetration welds, shall be 100% visually inspected. In addition to visual inspection, a minimum of 10% of the welds shall be magnetic particle inspected. Selection of the samples to be tested shall be at the discretion of the Engineer. When there are several pieces of the same type of member, a representative sampling of a minimum of 10% of those welds shall be inspected. Where magnetic particle inspection is impossible, i.e., due to construction configuration or inaccessibility, dye penetrant inspection may be used with prior written approval of the Engineer. If weld defects are detected during the initial random sampling, additional samples may be required at the discretion of the Engineer. 3. All welds on handrail and ladders shall be 100% visually inspected. 4. When magnetic particle inspection is used, the root pass and final layer shall be inspected. 3.7 BUTT JOINTING A. Structural sections shall be cut from full lengths of stock material unless permission is sought and obtained from the Engineer to include butt joints in particular instances. Such joints shall be full penetration welds and may be subject to non-destructive testing at the Fabricator's expense. 3.8 TOLERANCES A. Allowable tolerances shall comply with requirements of the "Code of Standard Practice for Steel Buildings and Bridges" of the AISC Manual of Steel Construction. 3.9 PAINTING A. All carbon steel material furnished under this Specification, excluding fasteners and materials to be galvanized, shall be cleaned and coated as specified herein. Coatings shall be shop applied with field touch-up as required. 13. Shop drawings shall identify the shop applied coating systems. Data to be provided shall include the coating system manufacturer's name and product designation, the degree of surface preparation, dry film thickness and color. C. Prior to general solvent cleaning and abrasive blasting, heavy deposits of sludge or grease shall be removed by scraping or dry wiping. Residual grease and oil shall be removed in accordance with Steel Structures Painting Council (SSPC) Standard SP1, Solvent Cleaning, prior to abrasive blast cleaning. D. All surfaces shall be abrasive blast cleaned to the requirements of SSPC-SP6, Commercial Blast Cleaning. Blast cleaning shall achieve a surface profile from 2.0 to 3.5 mils. IAD -chard Unit Compressor Station\C 100REVB105130SteelFabricalion.doe REVISION 0 SE Samuel Engineering. Inc. se 5.0 «ria. ENCANA OIL & GAS (USA) INC. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 11 E. Coating shall be applied by spray application in a single coat in accordance with SSPC-PA1 as supplemented by the Coating Manufacturer's written instructions. Dry film thickness shall be as follows: 1. Weldable Primer 0.8 mils DFT 2. Prime Coat: 4.0 mils DFT 3. Finish Coat 6.0 mils DFT F. Coating application shall be started prior to the formation of any rust bloom and in no case more than six (6) hours after completion of abrasive blast cleaning. Surfaces to be coated shall be protected from the weather continuously through the cleaning, painting and drying periods. G. Coating shall be applied to dry, frost -free surfaces with a surface temperature of not less than 50 degrees F and not more than 100 degrees F. Application of coating materials shall not commence nor continue when the surface temperature is less than 5 degrees F above the dew point. H. The finish coat shall be withheld from the faying surfaces of all slip critical connections. I. Surfaces adjacent to field welded edges shall be kept free of paint within 2 inches of the edge. The weld area shall be coated with one coat of weld -through primer. J. Painted members shall not be laid directly on the ground or floor but shall be placed on skids or trestles and shall be handled so as to avoid injury to the paint. K. Where paint finish is missing or damaged, the finished steel surface shall be prepared in the affected areas in accordance with the requirements of this specification. Surfaces for which blast cleaning is specified, but because of their location cannot be treated, shall be power tool cleaned in accordance with SSPC- SP3 I.. Prior to paint application, coating edges at the boundary between coating and bare metal surface shall be feathered by mechanical methods to aid blending of repair work with the original coating. M. Paint application for areas to be repaired shall conform to the requirements of this specification. 3.10 GALV ANIZING A. Steelwork shall be pre -cleaned utilizing a caustic bath, acid pickle and flux. Alternatively, the steel shall be blast cleaned in accordance with SSPC-SP5 and fluxed. The application of the zinc coating to the steel shall conform to the criteria established in ASTM A123. $E Samuel Engineering, Inc I Orchard Unit Compressor Statbon1ClOOREV6145134SteelFabrication doc REVISION 0 ENCANA OIL & GAS (USA) INC.. ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 12 C. Where either member to be bolted is galvanized, erection and structural bolts shall be galvanized in accordance with ASTM A153. D. Galvanized surfaces damaged in the shop after galvanizing shall be repaired with one of the materials listed below or in accordance with mutual agreement between the galvanizer and the fabricator. The repair shall be performed in accordance with ASTM A780. 1. Zinc -Rich Spray The area to be repaired shall be thoroughly cleaned by blast cleaning or vigorous wire brushing to expose bare steel. A zinc -rich galvanizing repair compound which meets ASTM A780 shall be applied by brushing or spraying the affected area. The minimum thickness shall be 8 mils DFT. 2. Sprayed Zinc The area to be repaired shall be suitably pre -heated to ensure freedom from moisture, oil, grease and other foreign matter. The zinc layer shall be applied by metalizing spray to the clean and dry surface using the manufacturer's recommendations. The minimum thickness shall be 4 mils DFT. 3. Zinc -Based Solders and Wire After contamination removal by vigorous wire brushing, the surface being repaired shall be heated to approximately 600 degrees F. The zinc alloy repair compound shall then be spread over the heated surface in accordance with the manufacturer's instructions. Repair compound residues should be removed with a damp cloth or by rinsing with water. The minimum thickness shall by 2 mils DFT. 111 ABRASIVE BLAST CLEANED SURFACES A. All abrasive blast cleaned surfaces shall be verified to meet the requirements of this Specification by performing the following: 1. Visually inspect the surfaces for cleanliness by comparing the surface to the appropriate visual standard in SSPC-Visl, Pictorial Surface Preparation Standards for Painting Steel Structures. 2. Verify the anchor pattern and profile of the surface by visual comparison with a Keane-Tator Profile Comparator. Alternately, Testex Press -O -Film Replic Tape may be used. Micrometers used shall be calibrated. 3.12 COATED SURFACES A. For film thickness measurements, the requirements of SSPC-PA2 shall be followed. B. Readings should be taken on smooth, regular surfaces, not at flanges, edges, pockets, fillets, etc. Representative "sample areas" should be established on the surface prior to taking film thickness readings. SE] Samuel Engineering. Inc I lOrctrera Lind Compressor SlationlCiMOREVB105130StselFatxication.doc REVISION 0 ENCANA OIL & GAS (USA) INC, ORCHARD COMPRESSOR STATION PROJECT NO.: 5023-01 CONSTRUCTION SPECIFICATION 05130 STRUCTURAL STEEL FABRICATON REV. DATE: MAY 18, 2005, PAGE 13 C. A minimum of three spot readings shall be taken for every fifth member coated. D. If more than one-third of the readings taken in a given sample area indicate a film thickness outside the established limits, corrective action shall be taken. 3.13 STORAGE AND TRANSPORTATION A. Steel members shall not be subjected to excessive stresses or adverse weather conditions. Ends of open pipe sections shall be covered to prevent moisture from accumulating within the pipe. 13. All of the steelwork crates, cases, bundles and loose pieces shall carry shipping marks as specified in the order. C. Individual pieces of weight in excess of 3 tons shall be marked with their gross weight. D. The Contractor shall arrange for the packaging, loading and transportation of all completed work to site. Unloading will be by others. E. During shipment, sufficient dunnage shall be used to prevent any rubbing of steel against steel. F. The Contractor will provide the Owner with details of each load of steel on its departure from the fabrication shop. END 1 Orchard Unit Compressor StatioricC1001REVB05130StealFabrication do;: REVISION 0 Samuel Engineering, Inc, Part V Fire Control Measures • General • All facility or operations personnel are instructed as to: Be aware of local area fire danger for each day Location of fire control equipment Proper operation of fire control equipment Emergency procedures and how to call for additional resources Welding & Hot Work Operations • A minimum of one person is dedicated to act as a fire watch during welding or hot work operations with a fire extinguisher at hand. • Welding shields are used during grinding operations to prevent sparks frorn leaving work areas and igniting vegetation. • Water trucks are used to wet down ground and nearby vegetation, as conditions dictate. • At the close of each day, personnel inspect the area of welding or hot work activities for any smoldering debris and any conditions conducive to fires. Communications • EnCana or Contractor vehicles are typically equipped with cellular communications on board. In the event of a fire • In the event of a fire, all personnel and appropriate equipment on site will be committed to fire containment and control. • The BLM and appropriate fire authorities will be notified immediately. • Direction of fire control efforts will be transferred to appropriate fire fighting agency personnel upon their arrival on site • • KLE1NFELDER May 20, 2005 File: 56972 Mr. Kevin Mahoney Samuel Engineering, Inc. 5775 DTC Boulevard, Suite 200 Englewood, Colorado 80111 Subject: Preliminary Results for Geotechnical Investigation Orchard Compressor Station Parachute, Colorado Dear Mr. Mahoney: As requested, Kleinfelder has initiated a geotechnical investigation for the proposed Orchard Compressor Station near Parachute, Colorado. At this time, we have completed the site investigation and laboratory work and are p performing an nengineering eepart t analysis and preparing the final report. We will provideafinal geotechnical and • summarizing the results of our subsurface exploration, laboratory 9 engineering analyses and presenting our conclusions and recommendations in the near future. This report provides our preliminary findings for site subsurface conditions. The information presented herein is preliminary and subject to modification based on our review of the laboratory testing results. Project Description We understand the compressor station will include three corepressors housed within a pre-engineered building, two substations, and various tanks, transformers, generators, scrubbers, pumps, and pipe racks. The compressors will be skid -mounted with an overall footprint of 36 feet by 60 feet and weight of 563 kips. Field Exploration A field exploration performed on April 25 and 26, 2005, included drilling 11 exploratory borings to depths of 12 to 31 feet. The borings were drilled at or near the locations staked in the field and indicated on the site plan provided. The borings were advanced using a truck -mounted drilling rig equipped with 4 -inch continuous -flight, solid -stem auger. Drive samples were obtained during exploration using a modified California Page 1 of 3 May 20, 2005 569721DEN5R063 Copyright 2005 Kleinfelder, inc. sampler (2.5 -inch 1.D.) driven into the strata, with blows from a 140 -pound hammer 1110 falling through a 30 -inch drop in accordance with locally recognized practices. The blows required to drive the sampler for 6 inches are recorded. This blow count is an indication of the relative density or consistency of the strata. Attached to this report are the preliminary boring logs describing the subsurface conditions encountered. These logs are subject to change based on the results of our review of the laboratory testing. The lines defining boundaries between soil and bedrock types on the logs are based on drill behavior and interpolation between samples, and are therefore approximate. Transition between soil and bedrock types may be abrupt or may be gradual. Subsurface Conditions The subsurface conditions encountered in our borings generally consisted of 7 to 15 feet of a sandy clay overlying 1/2 to 6 feet of sand with varying amounts of silt underlain by '/2 to 16 feet of gravel. The subsurface soils were underlain by claystone bedrock in two of the borings. Due to the presence of large gravels and cobbles, auger refusal these materials was encountered in the remaining borings. Groundwater was • encountered at the time of drilling in most of the borings at depths of about 11 to 15 feet. The clay was sandy and stiff to hard in consistency based on penetration resistance tests. The clays had a low to moderate expansive potential based on laboratory results. The sands had varying amounts of silt and were loose to dense in relative density based on penetration resistance tests. The claystone bedrock encountered underlying the subsurface soils in two borings was hard in hardness. Preliminary laboratory test results are also attached to this report. Based on the results of our investigation, we believe the structures can be supported on a shallow foundation system. Engineering recommendations for structural design of the foundations and floor slabs will be provided in our forthcoming report. 569721r1EN5R063 Page 2 of 3 May 20, 2005 Copyright 2005 Kleinfeider, Inc. 1 The information in this report is preliminary and subject to modification based on our • review. We appreciate this opportunity to be of service to you, and look forward to future endeavors. if you have any questions regarding this report or need additional information or services, please feel free to contact the undersigned in our Denver office. Respectfully submitted, KL 1I ELDER INC. D RE°r8r. Jere A. Strickland, P. Senior Engineer JAS/vr Enclosure 569721DEN5R063 Page 3 of 3 May 20, 2005 Copyright 2005 K!einlelder, inc. Golden, (. €1 ti{) 411 I ,u s 1 LEGEND OF SYMBOLS USED ON BORING LOGS LOG SYMBOLS BULK / GRAB SAMPLE IMODIFIED CALIFORNIA SAMPLER (2.5 inch inside diameter) J STANDARD PENETRATION SPLIT SPOON SAMPLER (2.0 -inch O.D. X 1.4 -inch I.D.) SHELBY TUBE (3 inch outside diameter) BDBGM SIZE CORE BARREL (1.65 -inch 1.D.) BW44 SIZE CORE BARREL (L875 -inch 1.D.) HQ -3 SIZE CORE BARREL (2.4 -inch 1.D.) WATER LEVEL (level where first encountered) WATER LEVEL (level after completion) GENERAL NOTES 1. Lines separating strata on the fogs represent approximate boundaries only. Actual transitions may be gradual. 2. No warranty is provided as to the continuity of soil or rock conditions between individual sample locations. 3. Logs represent general soil or rock conditions observed at the point of exploration on the date indicated. 4. In general, Unified Soil Classification designations presented on the logs were based on visual classification in the field and were modified where appropriate by visual classifications in the office, and/or laboratory gradation and index property testing. 5. NV = No Value; NA = Not Analyzed; NP = No Plasticity 6. Exp = percent expansion under defined surcharge pressure. 7. Com = Percent compression under defined surcharge pressure. S. 50/X indicates number of blows required to drive the indentif ed sampler X inches with a 140 ib hammer falling 30 inches. USCS SYMBOL GW p® GP GM GC SW SP SOIL DESCRIPTIONS WELL -GRADED GRAVELS, GRAVEL -SAND MIXTURES WITH LITTLE OR NO FINES POORLY -GRADED GRAVELS, GRAVEL -SAND MXIT3RES WITH LITTLE OR NO FINES SILTY GRAVELS, GRAVEL -SILT -SAND MD.'TLiRES CLAYEY GRAVELS, GRAVEL -SAND -CLAY 'MLXTURES WELL -GRADED SANDS, SAND -GRAVEL MIXTURES WITH LITTLE OR NO FINES POORLY -GRADED SANDS, SAND -GRAVEL MIXTURES WITH LITTLE OR NO FINES SM SILTY SANDS, SAND -GRAVEL -SILT MIXTURES SC c, I{I I ML OL MH CH CLAYEY SANDS, SAND -GRAVEL -CLAY MIXTURES INORGANIC SILTS & VERY FINE SANDS, SILTY OR CLAYEY FINE SANDS, CLAYEY SILTS WITH SLIGHT PLASTICITY INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELLY CLAYS, SANDY CLAYS, SILTY CLAYS, LEAN CLAYS ORGANIC SILTS & ORGANIC SILTY CLAYS OF LOW PLASTICITY INORGANIC SILTS, MICACEOUS OR DIATOMACEOUS FINE SAND OR SILT INORGANIC CLAYS OF HIGH PLASTICITY, FAT CLAYS CLAYSTONE INTERBEDDED SANOSTONE/CLAYSTONE SANDSTONE SILTSTONE FILL Note: Fine grained soils that plot within the hatched area on the Plasticity Chart, and coarse grained soils with between 5% and 12% passing the No, 200 sieve require dual USCS symbols, s, ie. , GW-GMSSC, P-GM, SP-SCSC GC, GP -GC, GC -GM, KLEINFELDER Drafted By: R. Reyes Date: 5/9/2005 Project Number: 56972 BORING LOG LEGEND Orchard Compressor Station Copyright tgeinte[der, Inc. 2005 Location: Groundwater (ft): Drilling Company: Hole Diameter (in): Hammer Type: See boring location plan Initial g): 12.5 feet while drilling. Final (Y): 14.6 feet 4/26 after drilling. Spectrum Exploration Equipment: CME -55 4 Drilling Method: Solid Flight Auger Automatic Date Started: 412512005 Date Completed: 4/2512005 Logged By: A. Becker Total Depth (ft): 31.0 N OR STATION 0 t ?0 FIELD LABORATORY DESCRIPTION 0 G - 0 0. r N 0 CZ ave O c • E3 (xi Tif; N O °3 0 ra0_CC 0. c 0 E J 0 J c 0 0 4 CLAY (CL): sandy, stiff to very stiff, moist, dark reddish brown �T SAND (SM): silty, loose, moist, dark reddish brown, �° GRAVEL (GP): sandy, medium dense to ° very dense, wet o b'V 00- ° a� ac oQ ob(-' 0� 00 c> L •� a 5 °CY' l3� 0 J 4 CLAYSTONE: sandy, very stiff, wet, grey k9 KLEINFELDER Drafted By: Date: R. Reyes 51912005 Copyright Kleinfelyder, Inc. 2005 Project Number: 56972 108 16.0 96 121 21.1 6.4 100 30 Exp = 3.5% BORING LOG Orchard Compressor Station BORING TB Page 1 of 1 Location: See boring location pian Groundwater (ft): Final (?): 14.0 feet 4126 after drilling. Drilling Company: Spectrum Exploration Equipment: CME -55 Hole Diameter (in): 4 Drilling Method: Solid Flight Auger Rammer Type: Automatic Date Started: 4125/2005 Date Completed: 4/25/2005 Logged By: A. Becker Total Depth (ft): 20.0 a a] IJ! Cib 0 0 J N w U r 0. (t W 0 0 0 m C7 z 0 p4 C: va ARD COMPRE 0 m 0 0. 0. DESCRIPTION FIELD LABORATORY E N in 0_ E fi 3 0 0 O C • m � VA o cs 0 0- C 0- (-13 N Q 0 N 0 CLAY (CL): sandy. medium stiff to stiff, dry to moist, reddish brown SAND (SM): silty, medium dense, moist, reddish brown 10_ SAND (SP): medium dense to dense, moist, light red GRAVEL (GP): sandy, medium dense to very dense, wet o 15�oOe bC G -') 0 =0 ° 25 - 30 - 35 - Refusal at 20 ft 10 16 10 50 MGM_ MCAL 010 MCAL 99 111 8.8 7.6 Wss = 0.578 % - pH = 8.0 units — Res = 168 ohm.cm 40 KLEINFELDER Drafted By: R. Reyes IProject Number: Date: 5/9/2005 56972 Copyright Kfeinfel1er, Inc. 2005 BORING LOG Orchard Corepressor Station BORING TB2 Page 1 or 1 Location: See boring location plan Groundwater (ft): Drilling Company: Spectrum Exploration Equipment: GME -55 Hole Diameter (in): 4 Drilling Method: Solid Flight Auger Hammer Type: Automatic Final (j'): 11.0 feet 4/26 after drilling. w 0 • 0 r 0 ID 0 w 0 0 t7 0 R❑ COMPRESSOR 0 EO 56972 ORCI 10 DESCRIPTION FIELD Date Started: 4/25/2005 Date Completed: 4/25/2005 Logged By: A. Becker Total Depth (ft): 12.0 E cn To 5 CJ 0 m 0 0. 0 0 2U 0 LABORATORY 1 i a1al _i 7 73 my Dnp co NI- 03 Ey 11 CI- 71t n- 4k. CLAY (CL): sandy, stiff to very stiff, moist, reddish brown SAND (SM): silty, stiff, moist, reddish brown 20 2 0 12 MCA 19 MCAL 36 103 19.3 GRAVEL_ (GP): sandy, medium dense, wet j Refusal at 12 ft Exp = 3.7% kg KLEINFELDER in z Drafted By: R. Reyes Project plumber: n Date: 5/9/2005 56972 CJ Capynght KleinfeIder, Inc 2005 BORING LOG Orchard Compressor Station BORING TB 3 Page 1 or 1 Location: Groundwater (ft): Drilling Company: Hole Diameter (in): Hammer Type: aD 0 v uJ a) J See boring location plan No Free Groundwater Encountered Spectrum Exploration Equipment: CME -55 4 Drilling Method: Solid Flight Auger Automatic DESCRIPTION 0 0 0 Z RD COMPRESSOR E CLAY (CL): sandy, stiff, moist, reddish brown i5 20 25 30 35 GRAVEL (GP): sandy, medium dense, moist FIELD Q 0. E 0) MCAL Date Started: 4/25/2005 Date Completed: 4/25/2005 Logged By A. Becker Total Depth (ft): 12.5 N C 0> O 0 o`er c C N mi 0 C 0 in O a) a) 0 - 100 8,9 LABORATORY D S 0) 0 0 - 24 6Aj c 0_ 1 ' I { E0) 0) • csi • 4t 52 'El le Refusal at 12.5 ft KLEINFELDER Drafted By: Date: R. Reyes Project Number: 5/9/2005 55972 C9pynght Kleinfelder, Inc. 2005 BORING LOG Orchard Compressor Station BORING TB4 Page 1 of 1 Location: Groundwater (ft): No Free Groundwater Encountered Drilling Company: Spectrum Exploration Equipment: CM E-55 Hole Diameter (in): Solid Flight Auger 4 Drilling Method: Hammer Type: Automatic See boring location plan w y O w J U 0 DESCRIPTION ON GPJ 5/2012005 1{ 25 - 30 - 3 4 FIELD Date Started: 412512005 Date Completed: 4/25/2005 Logged By: A. Becker Total Depth (ft): 12.5 LABORATORY CLAY (CL): sandy, very stiff, moist, reddish brown SAND (SM): silty, medium dense to dense, moist, light red to redish brown GRAVEL (GP): sandy, medium dense, moist, various rock types Refusal at 12.5 ft 67 10 1— 0. t cu N 9 14 50111 MCAL MCAL 10B 98 17.3 4.5 E NV x C 0 713 NP 10 k9 KLEINFELDER Drafted By: R. Reyes Date: 51912005 Copyright Kleinfetder. irtc. 2605 Project Number: 56972 BORING LOG Orchard Compressor Station BORING TB5 Page 1 of 1 Location: Groundwater (ft): Drilling Company: Hole Diameter (in): Hammer Type: TION.GPJ 5120 w 0. 0 0 See goring location plan Final ()' 13.5 feet 4/26 after drilling. Spectrum Exploration Equipment: CME -55 4 Drilling Method: Solid Flight Auger Automatic DESCRIPTION E CLAY (CL): sandy, stiff to hard, moist, reddish brown SAND (SP): medium dense, moist, reddish Jicy brown n �( GRAVEL (GP): sandy, medium dense, 0 a moist to wet, various rock type � 30 0 n 20 25 30 - 35 Recusal at 16 ft FIELD w v F 0) 9 MCAL 15 Date Started: 4/2512005 Date Completed: 4/25/2005 Logged By: A. Becker Total Depth (ft) 16.0 103 16.1 LABORATORY E J 0 J Plasticity Index N y r A' 50110 MCAL 111 15.5 Exp = 0.0% KLEINFELDER Drafted By: R. Reyes Date: 5/9/2005 Copyright Kleinfelder, inc. 2045 Project Number: 56972 BORING LOG Orchard Compressor Station BORING TB 6 Page 1 of 1 Location: See boring location plan Groundwater (ft): Drilling Company: Spectrum Exploration Equipment: Hole Diameter (in): 4 Drilling Method: Hammer Type: Automatic Final (?): 15.0 feet 4/26 after drilling. Date Started: 4/25/2005 Date Completed: 412512005 CME -55 Logged By: A. Becker Solid Flight Auger Total Depth (ft): 31.0 c m W ARO COMPR O M O z o_ c� 0 a 10 FIELD DESCRIPTION 0 U (15 �j 61 75. E <o F 0 E O Q7 N � 2U E 7 70 Cr LABORATORY c n3 e - CLAY (CL): sandy, stiff to very stiff, moist, reddish brown 15— � L QaoC C 20—Da be ado ha° 25-1. CoQ aod'" CS 307.30 0 35 SAND (SP): loose, wet, dark brown GRAVEL (GP): sandy, medium dense, wet, various rock type 10 14 9 10 MCAL MCAL 2 MCAL 11 107 100 83 14.0 21. 36.6 Refusal at 31 ft 40 Exp =1.9% Exp = 2.4% KLEINFELDER Drafted By: R. Reyes Date: 5/912005 Copy- right KYeinfelder, Inc. 2J05 Project Number: 56972 BORING LOG Orchard Compressor Station BORING TB7 Page 1 of 1 Location: Groundwater (ft): Drilling Company: Spectrum Exploration Equipment: CME -55 Hole Diameter (in): 4 Drilling Method: Solid Flight Auger Hammer Type: Automatic See boring location plan Final (Q): 15.2 feet 4126 after drilling. Date Started: 4/25/2005 Date Completed: 4/25/2005 Logged By: A. Becker Total Depth (ft): 23.0 w 4 N uJ 72 ORCHARD COMPRESSOR STATION GP DESCRIPTION CLAY (CL): sandy, very stiff, moist, reddish brown FIELD w rys N m 0 0 C 0 FO ar H a) E as 9 MCAL 10 9 MCAL 13 SAND (SP): loose, wet, reddish brown GRAVEL (GP): sandy, medium dense, wet, various rock types Refusal at 23 ft MCAL 109 100 LABORATORY • C • CD © 0 16.0 22.7 E J 0 J N 0 a V! Ca 0 0 0 0.1 Exp = 2.6°A Wss = 0.184 % pH= 8.0 units Res = 148 ohm.cm KLEINFELDER Drafted By: R. Reyes Date: 5/9/2005 Copyright Kieirlf tder, iac. 2005 Project Number: 56972 BORING LOG Orchard Compressor Station BORING TB S Page 1 of 1 Date Started: 4/25%2005 Location: See boring location plan Date Completed: 4/25/2005 Groundwater (ft): Final (Y): 13.0 feet 4125 after drilling. Drilling Company: Spectrum Exploration Equipment: CME -55 Logged By: A. Becker Hole Diameter (in): 4 Drilling Method: Solid Flight Auger Hammer Type: Automatic Total Depth (ft): 14.0 DESCRIPTION FIELD D COMPRE5 x U 0 0 0 W z a (ID 10—. ❑ CLAY (CL): sandy, stiff to very stiff, moist, reddish brown ,S7 15- 20 - 25 - 30 - 35 - 40 SAND (SM): silty, medium dense, moist, reddish brown w aY m E cEa V 0. 0 O LABORATORY a C r a 17i j C H 05 N as 0- # 4. O 10 12. MCAL GRAVEL (GP): sandy, medium dense, wet various rock .es Refusal at 14 ft 8 MCAL 11 102 101 16.8 10.8 24 1 4 66 KLEINFELDER Drafted By: R. Reyes Date: 5/9/2005 Project Number: 55972 BORING LOG Orchard Compressor Station BORING TB 9 Page 1 of 1 v Copyright Kfeinfelder, Inc. 2005 Location: Groundwater (ft): _ Drilling Company: Spectrum Exploration Equipment: Hole Diameter (in): _4 Drilling Method. See boring location plan Final P): 14.5 feet 4125 after drilling. Hammer Type: Automatic CME -55 Solid Flight Auger Date Started: 4125/2005 Date Completed: 4/25/2005 Lagged By: A. Becker Total Depth (ft): 30.5 Elevation (feet) • '2 ORCHARD COMP 0 u tI 1) z 0 c1 S 0 J V cb (0 DESCRIPTION CLAY (CL): sandy, stiff to very stiff, moist, reddish brown SAND (SP): loose, wet, dark reddish brown GRAVEL (GP): sandy, medium dense, wet, various rock types CLAYSTONE: bedrock, hard, slightly moist, grey FIELD co 71 w Q — = 2 F N O C y . U_ o d E m N O io W U] d co 9 MCAL 15 11 MCAL 15 MCAL 107 102 15.2 23.5 E J J LABORATORY x C 0 Exp = 3.7% KLEINFELDER Drafted By: R. Reyes Project Number: Date: 5/912005 56972 Copyright Kleinfeltler. Inc. 2005 BORING LOG Orchard Compressor Station BORING TB10 Page 1 of 1 Location: See boring Vocation plan Groundwater (ft): Final ff.): 14.0 feet 4/26 after drilling. Drilling Company: Spectrum Exploration Equipment: CME -55 Hole Diameter (in)4 Drilling Method: Solid Flight Auger Hammer Type: Automatic w 10 15 CLAY (CL): sandy, stiff to hard, moist. reddish brown Date Started: 4125/2005 Date Completed: 4/25/2005 Logged By: A. Becker Total Depth (ft): 15.0 LABORATORY SAND (SM): silty, medium dense, moist, reddish brown 30 35 GRAVEL (GP): sandy, dense, wet, various rock types 0 - Exp = 4.4% L KLEINFELDER BORING LOG Drafted By: R. Reyes ` Project Number: Date: 5/9/2005 I 56972 v Orchard Compressor Station Capynght Kteinfelder, inc. 2005 • • ❑ COMPRFSSOR $ a SWELLJSETTLEMENT (%) -5 0 SOURCE: TB1 At a depth of approximately 4.0 feet qKLEINFELDER 5 Drafted By: R. Reyes x N Date: May, 2005 Copynghl Kteinfetder, Inc. 20.D5 Project Number: 56972 STRESS (ksf) Before Total Unit Weight (pct) = 125.5 Moisture Content (%) = 16.0 Dry Unit Weight (pef) = 108.1 10 After SWELL/SETTLEMENT TEST Orchard Compressor Station Figure C-1 SWELLISETTLEMENT (% 0.1 SOURCE: TB 3 At a depth of approximately 4.0 feet STRESS (ksf) Total Unit Weight (pct) Moisture Content (%) = Dry Unit Weight (pcf) = Before 122.3 19.3 102.5 10 After $9KLEINFELDER Pr Drafted By: z a Date: Copyright Klenielder, Inc. NOS R. Reyes May, 2005 roject Number: 56972 SWELL/SETTLEMENT TEST Orchard Compressor Station Figure C-2 11111 III -1 wom ,41,11 STRESS (ksf) -5 0.l a 0 SOURCE: TB B a C • K Q' 0 Drafted By: R. Reyes Project Number:. Date: May, 200555972 Copyright Klemfelder, Inc. 2005 At a depth of approximately 9.0 feet KLEINFELDER Before Total Unit Weight (pcf) = 128.7 Moisture Content (%) = 15.5 Dry Unit Weight (pcf) = 111.5 SWELL/SETTLEMENT TEST Orchard Compressor Station After Figure C-3 1 • SWELL/SETTLEMENT (°I%) NI 111111 11111 111111 NM ME 11111 III '110 ION NI -5 0.t SOURCE: TB 7 At a depth of approximately 4.0 feet IJKLEINFELiJER Drafted By: Date: ocvngh[ KseinfeIder, Inc. X)05 R. Reyes May, 2005 Project Number: 56972 STRESS (ksf) Before Total Unit Weight (pct) = 121.6 Moisture Content (°/v) = 14.0 Dry Unit Weight (pcf) = 106.7 10 After SWELL/SETTLEMENT TEST Orchard Compressor Station Figure C-4 J • SWELL/SETTLEMENT (%) 4 3 2 0 1111111 MI Ell NEIN NM MN NI MIEN NI NMI NI NI NM 111111 1111111 -3 -4 _5 0.1 SOURCE: TS 7 At a depth of approximately 9.0 feet STRESS (ksf) Before Total Unit Weight (pcf) = 121.7 Moisture Content (%) = 21.1 Dry Unit Weight (pcf) = 100.5 I9KLEINFELDER Drafted By: R. Reyes Date: May, 2005 KLmnIelder, Inc. 2005 Project Number: 56972 SWELL/SETTLEMENT TEST Orchard Compressor Station RE SOR STAT9(lk G c •E c SWELUSETTLEMENT(% r -5 0.l SOURCE: TB 8 At a depth of approximately 4.0 feet ILIKLEINFELDER uc Drafted By: R. Reyes z 5 Date: May, 2005 Capynght K4emteider, Inc. 2005^ Project Number: 56972 STRESS (ksf) Before Total Unit Weight (pct) = 126.1 Moisture Content CM = 16.0 Dry Unit Weight (pCf) = 108.8 SWELL/SETTLEMENT TEST Orchard Compressor Station 10 After Figure 0-6 5 4 3 sdP SWELL/SETTLEMENT (%) 1 0 11111 NMI Mira INN NI 11111111111 1111111111111111111111 NM ME ME NM MIN 1111 0 0.1 SOURCE- TS 10 At a depth of approximately 9.0 feet gJ1KLENFELDER not Klel R. Reyes May, 2005 'elder Int 2175 Project Number. 56972 STRESS (ksf) Before Total Unit Weight (pcf) = 125.7 Moisture Content (%) = 23.5 Dry Unit Weight (pcf) = 101.8 SWELL/SETTLEMENT TEST Orchard Compressor Station After Figure C-7 ELL/SE 5 4 2 1 0 -3 -4 -5 0.1 IN= NI SOURCE: TB 11 At a depth of approximately 4.0 feet IUKLEINFELDER Drafted By: Date: nur�oh[ Kleinfelder, Inc. 2+0 R. Reyes May, 2005 Project Number: 56972 l STRESS (ksf) Total Unit Weight (pct) Moisture Content (%) Dry Unit Weight (pcf) Before 126.0 19.3 105.6 SWELL/SETTLEMENT TEST Orchard Compressor Station After Figure C-8 • 100 90 80 70 Z60 50 40 111111 IMO IMO IMO 1111 8 0 0 w w 0- 2 ~2 U U 0 0� 0 a 20 10 Coarse GRAVEL SIEVE SIZE 11111 111111111111 11011111 1111111111111111111 Elm 11111111111111mo 111111 IIIIIIII 111111111 1111111 Milli 111 11111117 Nil fin 111 111 0 #200 10 PARTICLE SIZE IN MILLIMETERS SAND Fine Coarse LEGEND SOURCE DEPT H GRAVEL SAND �D FI{NES LL • TBI 9.0 0 70 30 w J KLE1NFELDER Drafted By: R. Reyes Project Number: Date: May, 2005 56972 Copyright Kleintelder. Inc 2065 Medium DESCRIPTION SIEVE ANALYSIS Orchard Compressor Station Fine Figure 0-9 3f8" SIEVE SIZE *4 48 410 416 I s 80 70 Z60 = 50 —40 30 ATION.GPJ 5116/2005 0 a w ORCHARD COM 20 10 10 Mai 111111111111 MEI a ounlim iiimmomm NNE 1411 #100 4200 PARTICLE SIZE IN MILLIMETERS 0.1 LEGEND w w GRAVEL Coarse SOURCE TB 5 9.0 0 90 10 NV NP POORLY GRADED SAND with SILT(SP-SM) • Fine Coarse Medium DEPTH GRAVEL SAND FINES ( ) {P1 SAND DESCRIPTION Fine II KLEINFELDER Drafted By: R. Reyes Date: May, 2005 Project Number: 56972 SIEVE ANALYSIS Orchard Compressor Station Figure C-10 Capyngnl Klein`elder, Inc. 2005 3" 1-1/2" 3/4" I I 100 90 80 70 C7 z 60 ;r. _ 50 LJ "N40 30 20 SIEVE SIZE 318' #4 #8 #10 i I 10 #16 #30 #40 #50 I I I #100 #200 10 PARTICLE SIZE IN MILLIMETERS GRAVEL 0.1 SAND Coarse Fine Coarse Medium Fine LEGEND SOURCE DEPTH GRAVEL SAND FINES LL PI (ft) (%) (%) (%) (%) (%) • TB 11 9.0 0 53 47 DESCRIPTION w 5 KLEINFELDER Drafted By: R. Reyes Date: May, 2005 Copyright Kleinlelder, Ino. 2005 Project Number: 56972 SIEVE ANALYSIS Orchard Compressor Station Figure C-11 Landscaping and Reclamation Plans Landscaping Due to the location of the facility, within sight distance of residences and public roads and highways, measures such as painting and fencing of the facility will be taken to lessen the visual impact. Any areas disturbed by construction or operation activities that are not covered by equipment will be resurfaced with sand and gravel and graded flat or vegetated, as necessary. Reclamation The expected life of the Orchard Unit Compressor Facility is approximately 20 years. Reclamation will consist of the following: • Removal of all surface equipment • Restoration and re -contouring of grade to approximate original conditions • Replacement of stockpiled topsoil • Compliance with all prevailing Colorado Oil and Gas Conservation Commission and Garfield County regulations and conditions governing final reclamation • ENCANA OIL & GAS (USA) Inc. ORCHARD COMPRESSOR STATION • STORM WATER MANAGEMENT PLAN • MAY 20, 2005 Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storm Water Management Plan • SECTION 1 • • INSTRUCTIONS FOR COMPLETING THE SWPPP The generic Storm Water Management Plan (SWMP)meetsspecifically request d by adregulator, the eral requirements as well as the State of Colorado.Unless SWMP does not need to be sent in to any agency. You are required to have this plan stored at the office which is closet to the oondsr ruction and During drilling and competition activities, the SWMP should be kept on-site with ROW permits. 1. Section 3 should be reviewed to see if the iif additional BMP controls need controls listed in Section 3 are polbe added to cable to your site. Edit as needed. Also determine this section. 2. An appropriate reseeding mixture should be added to Section 10, e., 1. 3. The inspection form should be read and understood. An inspection form is included in Section 4. 4. The plan should be signed and dated by the local person responsible for the project. Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storm Water Management Plan SECTION 2 Encana has previously applied for a SWMP for this overall site and the CDPHE has assigned General Permit Number COR -030000. • SECTION 3 • • ENCANA OIL & GAS (USA) Inc. ORCHARD COMPRESSOR STATION STORM WATER MANAGEMENT PLAN 1. INTRODUCTION The stormwater permit requires the use of self -designed aSWMPs. These BMPs:s those that are based on the use of BMPs. For construction sites, theretypes prevent erosion, those which prevent pollutants from ets on o htr ey can nbdischarged. .om mixing with stormwater and those which trap pot Sediment controls typically include: • minimizing the amount of disturbed soil • preventing runoff from off-site areas from flowing across disturbed areas • stowing down the runoff flowing across the site • removing sediment from on-ste runoff before it leave the site The goal of Stormwater Management Plan (SWMP) is to improve water quality by reducing pollutants in stormwater discharges. 2. PROJECT DESCRIPTION Encana Oil & Gas (USA) plans to construct a compressor station on 6 acres that are 4 miles south of Parachute, CO. The current land use is range land. The entirety of the surface area is fee land. The Orchard Compressor Station is located in Garfield County and can be accessed from 1-70 by driving SW from Parachute 4.3 miles and exiting and then driving south onto the location. The approximate center of project area is N 39° 24' 9.44T, W 108' 5' 56.417". 3, DISTURBANCE ESTIMATE The total area of the project is 6 acres. The area of this project ted o beat 1.5-2 will moths. disturbance is 6 acres. The construction period is esti RUNOFF COEFFICIENT The soil type in the immediate area consists of clays and silty loams. Based on the soil types, and the amount and type of vegetation cover we calculate that the runoff coefficient is 0.16 after construction. Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storm Water Management Plan 5. EXISTING VEGETATION This project is located in rangeland near the ston-ten andColorado River. greasewoodThere are also in the immediate area is sagebrush, cheatgrass, p various grasses, forbs, and weeds. S. OTHER POTENTIAL POLLUTION SOURCES All activities will occur on the facility location. There will be no off location storage or staging areas. 7. NAME OF RECEIVING WATER The receiving water for the project area is the Colorado River. 8. AREA OF CONSTRUCTION ACTTVITY The area of construction activity that this Stormwater Management Plan vers i sisIocated 4 miles south of Parachute, Colorado in Garfield County, C undertaken to develop the oil Section natural 2t r7l gas resources in this field. The compressor station is located in SE/SW 9. SITE DESCRIPTION Encana Oil & Gas (USA) plans to construct The station t land use is rangeon 6 acres of an�dd hat are located 4.3 miles south of Parachute, Colorado. current In most cases, specific requirements for each site are contained in the agreement negotiated with the surface owner or land manager. a. Construction of the roads: APPLICABLE 1. Disturbance of new should avoided whenever possible. Whenever possible, e�tingroads will be utilizedor expanded to minimize the amount of surface disturbance. 2. The top soil will be removed and stored along the ROW. 3. The road will be builtusing t gand crown arescommonly h in roadways Water bars, wing ditches, drainage dips and ROW to minimize surface erosion, 4. After the road is built, the topsoil will be spread on the road outslopes and seeded. b. Construction of the well and compressor pads: APPLICABLE 1. The well pad will be constructed as small as possible to minimize soil and surface disturbance. 2. The topsoil will be removed from the site in lifts and placed at the edge of the location for reuse. 3. The pad will be excavated and/or filled to grade. The spoil material will Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storm Water Management Plan be stockpiled.ll be sred on the 4. The pit willbe excavated and itde spoil rga ed by theiSurfacs Managingedge of the site. The pit will be Agency. c. Construction of pipelines: APPLICABLE 1. The pipeline will be constructed in the road bed ROW and the top soil will have already been removed during road construction. 2. A trench about 18 inches wide will be excavated to a depthof 3 4 feet. 3. A rock shielldd,,where backfilled.needed, will be placed around the pip 4. The trench will be 5. The pipeline working appropriately an eight hour period, oressure tested, with has specified by r or nitrogen, at wo g p DOT requirements. 6. Final "tie-ins" will be completed. 7. The tie-in areas will be backfilled. 8. Recontouringt willtakeprescribed by tace on the he BLMht of aThe re-seeding willementing occur rosion and sediment controls p as soon as practical. 9. Water bars, wing ditches and drainage dips are commonly used in ROW to minimize surface erosion. d. The estimated area of disturbance will cover approximately 18 acres. e. A topographic map is attached. f. The construction area is located in what river basin? Colorado River Runoff may eventually drain into what river? Colorado River Are there any perennial streams that flow through the project area. N. If yes, what is it called? Are there any intermittent reams in the area?If yes, what are they g. Are there any wetlands in the immediate construction area? NO If yes, is there any anticipated work in the wetlands areas? NQ 10. CONTROLS - GENERAL BEST MANAGEMENT PRACTICES The following is a list of common Best tM Managemes ent which Encana employs during construction activities. Elri ccntrol implementation will be in ion conducted under the guidance of person whatexperienced BMPsare suitableCtand pro Beal forLeach ocal factors will be evaluated to determine construction project. a. Erosion Control 1. The size of the construction area will be minimized to the extent practical to prevent unnecessary disturbance of local soils. 2. Significant grade changes will be minimized when practical. 3. Water diversion structures will be constructed if deemed appropriate. These structures include water bars, drainage dips, culverts and wing Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storm Water Management Plan ditches. 4. Roads and well pads will be stabilized as soon as practical after construction. b. Road Construction 1. Existing roads will be used whenever possible. 2. Typically, roads will follow olloo h ridge linesn oto minimizeer a.rot grades whenever possible, in accordance 3. Stream crossings are avoided when possible. Existing crossings or bridges will be used. 4. Vehicles are confined to authorized traffic routes. c. Well Pads 1. Slopes are minimized to lessen erosion rates. 2. Wetlands, shallow ground water and flood plains are avoided whenever possible. 3. Fuels that are stored on-site are diked to prevent potential run-off in the event of a spill. 4. Trenches are dug around the various rigs to collect spills and wash water. 5. Absorbents, drop liners and catch pans are used to collect spills and drips. d. Spacing for Erosion Control 1. Waterbar and drainage dip spacing on the location will be as follows: e. Re -seeding 1. All disturbed areas will be re -seeded as recommended by the Surface Management Agency or the Soil Conservation Service. Seed will be planted using a drill, and in areas not suitable for drilling, the seed will be Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storm Water Management Plan • broadcasted and raked, or chained to cover the seed. Re -seeding will begin as soon as practical. TYPICAL SEED MIXTURE ( Agency Formula) Stormwater Management wing 1. To prevent or control potential erosion, water bars, drainage dips structures divert the waterdrunoff ditches are cut across ROW'S. These from the disturbed areas into the vegetated areas, dissipate the velocity and reduce the sediment loading. Other Controls 1. All equipment and vehicular access is confined to existing roads and the established right of way corridor. ll be 2. No construction or routine maintenance de activities uately suzpport construction to periods when the soil is too wetq equipment. If such equipment creates uts in excess of 12 inches t to adequately deep, it will be deemed that the soil condi� one sare t o we support construction equipment. Construction activities will not continue until soil conditions improve. 3. Construction sites shall be maintained in sanitary conditions at all times; waste materials at these sites shall be disposed of promptly and at appropriate waste disposal sites. 4. A contractor will be used to provide and maintain portable toilets. 11. MAINTENANCE The new construction areas will be routinely patrolled and inspected by vehicle to check ment on the for problems such as; erosion, right of way condition, unauthorized environmental al hazard, right of way and any other situations that could cauSe a safety or require preventive maintenance on these areas. Encana Oil & Gas (IDSA) Inc. Orchard Compressor Station Storm Water Management Flan • 12. INSPECTIONS • a. Inspection of the construction areas will be performed by the field supervisor and field personnel. 1. During construction, the disturbed areas, structural control measures and locations where vehicles enter the site shall be inspected at least once every seven (7) calendar days and within 24 hours of any precipitation and/or snow melt event which exceeds 0.5 inches. 2. After completion of the construction, but prior to returning the disturbed areas to approximate preconstruction conditions, the disturbed areas shall be inspected at least once a quarter. 3. An inspection report shall be immediately prepared and signed by the individual conducting the inspection. If the report describes deficiencies in pollution control structures or procedures, such deficiencies shall be corrected immediately. 4. Copies of the inspection form and an example are attached to the end of this document. b. Retention of Reports 1. Copies of the inspection reports shall be retained at the construction site except when the project is shut down for the season. If necessary, during seasonal shutdown, copies of the inspection reports shall be retained at the perrnittee's off-site office . 2, Copies of the reports shall be provided to the Administrator upon request and such reports shall be retained by the permittee for a minimum of three years. c. Collection and Submission of Self Monitoring Information 1. Upon written notification from the Administrator, the permittee shall collect and report storm water effluent or ambient water quality data of the type and at the frequency specified by the Administrator, 13. TERMINATION a. Notice of Termination 1. When a site has been finally stabilized so that the slopes and vegetation approximate preconstruction conditions, the permittee no longer requires coverage under this permit. At that time, the permittee shall submit to the Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storm Water Management Plan • • • Administrator the Termination Notice included as Appendix A of this permit. Upon receipt of the notice, the Administrator will provide the permittee with written confirmation that coverage under this permit has been terminated. 14. PLAN RETENTION During construction, the pollution prevention plan shall be retained at the construction site whenever practical. During seasonal shut downs, the plan shall be retained at the permittee's off-site office. A copy of the plan shall be made available to the Administrator upon request. 15. CERTIFICATION To the best of my knowledge, this plan is accurate and representative of the conditions at this site and includes the control procedures that will be employed during construction. NAME TITLE DATE Encana Oil & Gas (USA) Inc. Orchard Compressor Station Storrn Water Management Plan 1 SECTION 4 • • • en N a 0 0 O a i m 0, �_ 0 •0 0 e ed vn 0.i . w .0N to C4-. a, w 75 7C O Z cl a 3 0 P o, 04 g o 4 s 6, 0 Q 'a 0 W kr ; rp ogt4 7:1 '�cl) 4 0W tZ a 0 0 cd In v o PLI a a) 7:10 o �`*" .- s- o c. "' 7, a .0 E = it 5 U 0 trl o N cd O d Id0 .c.,_ U �-- `V B WI rte•. U •S '.0 '"' t•ntQ = A - p O y el *.. a 0 4 3 `n C'' C C4 el.)-. °� O 'd Cts a B Qto .> i' Q.j.5 o Q '. a3 O 0 ca, a a! Q+ N = l 0 U CV M • SECTION 5 • • APPENDIX A TEItM1NATION NOTICE Name, address, and telephone number of the company; individual, or org authorization to discharge under the attached general permit: Name: Address: Telephone, Identification number assigned to this project: __— Address ______—Address or legal description of the location of the construction project f (NOt) was filed: tion which received Address: Quarter: Section: Certification: certif; Linder penalty of law that the above vegetation approximate preconstruction o terrninatit'g coverage under General Per it is determined that the site was inadequat permit. ite has b derstand th Ott activity be lab zed so that the slopes and ubnitting this notice, I am also understand that if. at a later date, e for discharging pollutants withouta.; Printer fle {fit ectiofl "Any p t wh any appli for no. mo Date Title Tclephon Statutes provides that: towingly makes any false statement, representation, or certification in ... shall, upon conviction, be fined not more than $ 10.000 or imprisoned an one year or both" port completion, ren ve this notice from the permit and snail to the same office tliat processed • APPENDIX A • • 1 1 1' 9 •-,-1 i '^.---, A , t ---- A —..",Z1j1\ • --,-„. ./-, --) •.'----.-,-e':,1 N-, -'- r ---i \ .---,..„ .. 4--. '1\ l'• i ii : ..,"".:, ',......, c--*----/ ) i .") k. ) it • - 1/ ---, :•1 (:;, it kt 23 /•:- . I . '1.i , i • }. ..' '-'''':ii ' \\ ..j• •. -r--''''-"-t-i .•\ , - -.II ) /1- I ,'_- , ,•- i • f•-:!-•. ) -1)\ \ ....,-/ .1. • /I ii I . . / \ ' ' ' ) ..2" 17 ,7 ,.7 / (1..: - ----: - : , &:::,...... 5044 ----c---- _ 4, "`" ......• .--. ,f). .. • . /I i ) • --(:-,•:-T-.7 • ,..--.75;:-'-' ) : ./ 1 . , ----,,, ,./>c '->:,,... - • -----' • L. L, .,..... , ,...../ 5 / 14 ,, . .0.,_, • f:::„..-z-_-=--••4--,..•-•,-----ri",, - 1 • ,,, , C''..-•\ . ' \ - . ., ,, __"•----....—•:-.:,.-.•••••• (- . , ,•••• \ ksk 0 s4 o 11 , 1 1 ' i° ( .'-il:`,',.,'•-t'''- 1 ----„ —%----\- 520 i'" \ A I\ • /9" - • • :, 5009 Orchard Compressor Station o SE/SW 27, 7S, 96W 39° 24 9" 1'4, 108' 5 56" 1 Una 7 , i , , , ',. l'-- - - z()' 'T c ..-.„/". 11.07' }.1`c ...,..,,,r- ,r,v .. , _ ,•,‘,,...._.-- 1 5(7 ( 1/ 0 1 dsc02735 (2560x1020x24b • APPENDIX B • • BEST MANAGEMENT PRACTICES (BMPs) In order to address the requirements of pollution at construction sites, ava variety conof techniques should be employed to reduce soil erosion, site sediment loss, generated waste. This manual provides design criteria for arvariety of and permanent out ons techniques to address these issues. These techniques, or BMPs, consist of both temporary to reduce pollution from a construction site. The majorityof BMPs address onsite soil losses. For construct sites, soil the loss. In the form f of erosion and sedimentation sresults site. rm BMPsnw'haicnh address erosion and sediment pollution generated from a construction control are much more site specific than waste management techniques. Erosion and sediment control BMPs are dependent upon site slopes, drainage patternsand quant atitles, is and oIlii r it are e specific conditions. Waste management consists of "good housekeeping" dependent upon the type of construction and the quantity and type of building materials The following provides a method of selecting BMPs applicable to construction sites along with design criteria for each BMP. There may also be state or local manuals which list common BMPs for your region. In the SWPPP, the designer must first use the bine selects nguide u guide detail determine the design Bpreparing and antenan le too theusite. limitations sheets and purpose the each design and the techniques. and maintenance requirements, g . BMPs and locate them onsite These provide the tools for the designer to select the appropriate to effectively reduce sediment loss and erosion. Information is also provided on maintenance of the control devices as well as what should be checked during required inspections. • • • BMP SELECTION GUIDE Erosion Control These BMPs protect the soil before erosion occurs. They are primarilye e on usine eaars ound sdribu ares of but construction to either limit the flows across the site or lint tk► not active. Route flows around areas of disturbance Route flows around areas of disturbance Route overland flow on a slope into a pipe to protect the slope Provide natural soil protection through seeding, hydromulch or phasing Protect disturbed soil with a layer of hay Protect disturbed soil or slopes with geotextile and biodegradable fabrics SEDIMENT LOSS PREVENTION Construction activities normally result in disturbance on the site due to grading operations, clearingand other operations. Erosion will occur in these disturbed followingtechniquesareas an MP must be reduce soil used to contain the sedirnennfrom tine soil through sedimentatse disturbed areas. Toneor filtration of the runoff. loss from the site by retaining Slow and filter runoff to retain sediment Slow and filter runoff to retain sediment • • • Sediment Basin Temporary Sediment Tank Stabilized Construction Entrance Sandbag Berm Large pond with controlled outflow which allow sediment to settle out of runoff Provide sedimentation for sediment laden runoff from trenches and depressed areas Reduces offsite sediment tracking from trucks and construction from equipment Provide sedimentation and filtration for runoff under concentrated conditions in creeks, channels and drainage swales Very Effective and strongly recommended for sites larger than 10 acres Effective for specialized application Moderate Effectiveness but required to address offsite tracking Effective for severe applications WASTE MANAGEMENT These techniques will be used on the majority of construction projects the bas se to tgheir r general topic of reducing waste from construction activities. They form l housekeeping procedures which should be followed during construction. BMP Name Solid Waste Mange Hazardous Waste Management Concrete Waste Management Primary Purpose Techniques for management of paper, packaging, general building materials, etc. Management of paints, chemicals, fertilizer, oil and grease, etc. Disposal of concrete washout, demolished concrete, etc. Rating Very Effective Very Effective • Interceptor Swale Description An interceptor swale is a small v -shaped or parabolic channel which collects runoff and directs it to a desired location. It can either have a natural grass lining or depending on slope and design velocity, a protective lining of erosion matting, stone or concrete. Primary Use The interceptor can either be used to direct sediment laden flow from the disturbed areas into a controlled outlet or to direct `clean' runoff around disturbed areas. Since the swale is easy to install during early grading operations, it can serve as the first line of deucing runoff across fense sturbedin ucing runoff across disturbed areas. As a method of of � ructural measures to capture sediment from construction area, it reduces the runoff downstream of the disturbed area, runoff can be directed into a sediment basin or protect inlet for sedimentation as opposed to long runs of silt fence, hay bales or other filtration method. Based on site topography, swales can be effectively used in combination with diversion dikes. • Applications Common applications for interceptor swales include roadway projects, site development projects with substantial offsite flow impacting the site and sites with large parea of hisorary swalesban be e. It can be used in conjunction with diversion dikes to intercept eab areas, and fueling areas used throughout the project to direct flows from staggering along with specific areas of construction. Note that runoff whip shich c osseh ossa sediment disturbed rea n or is directed in unstable swales must be routed into a treatment Grass lined swales are an effective permanent stabilization technique. The grass effectively filters both sediment and other pollutants while reducing velocity. Design Criteria ▪ Maximum depth of flow in the swale shall be 1.5 foot based on 2 year design storm peak flow. Positive overflow must be provided to accommodate larger storms. • Side slopes of the swale shall be 3:1 or flatter. ▪ The minimum required channel stabilization for grades less than 2 percent and velocities less than 6 feet per second shall be grass. For grades in excess of 2 percent or velocities exceeding 5 feet per second, stabilization in the form of high velocity erosion control mats, 3" layer of crushed stone or rip rap is required. Velocities greater than 12 feet per second will require approval by the local jurisdiction and is discouraged. • ▪ Check dams can be used to reduce velocities in steep swales. See check dam BMP for design criteria. � Interceptor swales must be designed for flow capacity sections based may be on sed when properly ing's Equation to insure a proper channel section. Alternate ch designed and accepted. Consideration must be given to the possible outlet. ▪ Swales must maintain positive grade to an acceptable outlet. Limitations Interceptor swales must be stabilized quickly upon excavation so as not to contribute to the erosion problem they are addressing. Swales may be unsuitable to the site conditions (too flat or steep) . Limited flow capacity for temporary swales. For permanent, foot maximum depth can be increased as long as long provisions for public safety are implemented. Maintenance Requirements locate and Inspection must be made after each significant (0.5" or greater) so as notaM event oto diminish flawir any damage to the channel or to clear debris or other ob capacity. Damages from normal construction activities or storms such as tire ruts or disturbance of stabilization of the swale shall be repaired as soon as practical. Diversion Dike Description A diversion dike is a compacted soil mound which redirects runoff or wroth sdene or esirederoscation cont of e dike is typically stabilized with natural grass for low velocities mats for higher velocities. Primary Use The diversion dike is normally used to intercept offsite flowupstr a of stream of the constructBion area and direct the flow around the disturbed soils. It can also be construction area to direct flow into a sediment reductiodevicecuch as sed onsediment the assn or protected inlet. The diversion dike serves the same purpose the site, can be used in combination with an interceptor swale. • Applications By intercepting runoff before it has a chance to cause erosion, diversion dikes are very effective in reducing erosion at a reasonable cost. They areapplicable aroto and large pi variety of pprojects including site developments and linear project construction. Diversion dikes are normally used as perimetercontrols Used in comb not on with with large amounts of offsite flow from neighboring properties. swales, the diversion dike can be quickly installed with a minimum of equipment and cost, using the swale excavation as the dike. No sediment removal technique is required prior to crossing disturbed areas. Significant savings in structural controls can be realized by using diversion dikes the runoff to direst flow to central area such as a sediment basin or other sediment reduction structure crosses disturbed areas. Design Criteria • The maximum contributing drainage area should be 10 acres or less depending on site conditions. ■ Maximum depth of flow at the dikes shall be 1 foot. a The maximum width of the flow at the dikes shall be 20 feet. • • Side slopes of the diversion dike shall be 3:1 or flatter, a Minimum width of the embarkment at the top shall be 2 feet. II Minimum embarkment height shall be 18 inches as measured from the toe of slope on the upgrade side of the berm. • For velocities of less than 6 feet per second, the minimum stabilization for the dike and adjacent flow areas is grass or erosion control mats. For velocities greater than 6 feet per second, stone stabilization or high velocity erosion control mats slahol should e used. th Velocities greater than 12 feet per second must be approved by J • The dikes shall remain in place until all disturbed areas which are protected by the dike are permanently stabilized unless other controls are put into place to protect the site. Limitations Compacted earth dikes require stabilization immediately upon placement so as not to contribute to the problem they are addressing. The diversion dike can be a hindrance to construction equipment moving on the site, therefore their locations must be carefully planned prior to installation. Maintenance Requirements Dikes must be inspected on a regular basis to determine if silt s buiildi gn upa bin ehindy the di e If or if erosion is occurring on the face of the dike. Silt shall be • erosion is occurring on the face of the dike, the slopes of the face shall either be stabilized through mulch or seeding or the slopes of the face shall be reduced. Pipe Slope Drain Description A pipe slope d rain is a temporary pipe line typically utilizing flexible pipee headwall to run hof f down unstable slopes. They are anchored on each end with some form erosion and secure the pipe. Primary Use A pipeo slope drain is used on sites with a long, unstable slope area wahic isssubject to erosion from overland flow crossing unstable aPoe poorlydikes lized to direct dthe flow into the pipe area. combination with interceptor swalesIt The pipi e slope drain can provide service for a relatively large area. h a cono snot treat twill be runoff, therefore if the runoff contains sediment, treatment g required before the flow is released offsite. Applications Sites with large berms or grade changes such as roadway embankments are candidates for a ow into pipe slo e drain. Since provisions must be made to direct a n fllnstall dip vperly,pipe rslopesome grading is normally required upstream of the pipe slope r erosion can be greatly reduced (but not entirely eliminated) through the use of the drain. the c Pipe slope drains also require a stabilized outlet. This is critical since ete elo rap are typically ties at the outfall are normally high• Velocity dissipaters as well as stone required to reduce the velocity and spread the flow, reducing erosion. Flo mon dikes pipe slope r drain should be routed to a controlled outlet through interceptor other suitable methods. Design Criteria d ▪ The entrance to the pipe slope drain shall be a standard pre-fabricated the bottomareof the end end section with an integral toe plate extending a minimum of 6 inches section. The grade of the entrancedashall be corxnect d using watertight collars or � All sections of the pipe slope gasketed watertight fittings. ▪ All sediment -laden runoff conveyed by the pipe slope drain shall be directed to sediment trapping facility. ▪ Temporary pipe slope drains are to be sized to accommodate runoff flows equivalent to p 1 a 10y ear storm as calculated using the Rational Method and Manning's equation, but in no caseshall r i•es be sized d smaller than is shown in the followin: table: Maximum Contributing Drainage Area • Maximum drainage area for individual pipe slope drains shall be 5 acres. For areas larger than 5 acres, additional dr the shall s e added. should be properly stabilized. U Both the entrance and out fall ofpipe stabilization such as stone Grass can normally be used at the entrance, but armor type or concrete rip rap is normally used to address the high velocities of the outfall. Limitations II/ ■ Drains must be located away from the construction areas since the drain can easily be damaged by construction traffic. * Securing the pipe to the slope can be difficult and require significant maintenance during the life of the system. i es can become U In situations where pipe slope drains nn watsediment-laden r tt � overtop the drioversian dike thereby clogged during large rain events causing creating a serious erosion condition. U Grading is normally required upstrearn of the pipe slope drain in order to direct flow into the system. This can erosion bause ltional cost and ot does not prevent t or maintenance. the amount of ▪ A pipe slope dram reduc sediment runoff. Additional measures should be used in conjunction with the pipe slope drain to treat the flow. Maintenance Requirements Inspection must be made of the pipe after each sufficient (>0.5 inch) rdiversion dike has event to locate and the repair repair any damage to joints or clogging of the pipe. In cases where deteriorated from around the entrance of the pipe, it may be ne e e Sar of f eros to reinforce on aroundthe with sandbags or to install a concrete collar to prevent failur g ie drain should be addressed in a timely manner by stabilizing the area with erosion control Pp mats, crushed stone, concrete or other acceptable methods. • e etation Description Vegetation, as a Best Management Practice, is the sowing of annual grasses, small grains or legumes to provide interim vegetation stabilization for disturbed areas. Primary Use Vegetation is used as a temporary or permanent stabilization technique for areas disturbed by other structures. As a temporary control, vegetation is used to stabilize stock piles and barren areas which are inactive for long periods of time. As a permanent control, grass and other vegetation provide for good protection for the soil along with some filtering for overland runoff. Subjected to acceptable runoff velocities, vegetation tanto providehe a good method of permanent storm water management as well as a Y Vegetation can be used in conjunction with other techniques in order to assist in establishment of the vegetation. These other techniques include erosion control matting, swales and dikes to direct flow around newly seeded areas and proper grading to limit runoff velocities during construction. Applications Vegetative techniques can and should apply to every construction project with few exceptions. Vegetation effectively reduces erosion in swales, stock piles, berms, mild to medium slopes and along roadways. Vegetative strips can provide some protection used as a perimeter control for utility and site development construction. In many cases, the initial cost of temporary seeding may be prohibitive for stockpiles or other barren areas subject to erosion yet inactive. This initial cost should be weighed with the amount of time the area is to remain inactive, since maintenance cost for vegetated areas is much less than most structural controls. Design Criteria Surface Preparation # Interim or final grading must be completed prior to seeding, minimizing all steep slopes. • Install all necessary erosion structures such as dikes, swales, diversions, etc.,prior to seeding. • Groove or furrow slopes steeper than 3:1 on the contour line before seeding. • Seed -bed should be well pulverized, loose and uniform. • Plant Selection, Fertilization and Seeding t Use only high, USDA certified seed. ■ Use an appropriate species or species mixture adapted tolo�� clivi local office iocondditi U.S. and season according to the following table. Consult with Soil Conservation Service (SCS) or Engineering Extension ery nservice as necessary for the is selection of proper species and application technique in a. ■ Seeding rate should be in accordance with the following table or as recommended by the SCS or engineering extension service. 8 Fertilizer shall be applied according to the manufacturer's re mme dat oIIts with prope spreader equipment. Typical application rate for 10-10-10 grade lb/acre. DO NOT OVER APPLY FERTILIZER. i If hydro -seeding is used, do not mix seed and fertilizer more than 30 minutes before application. 8 Evenly apply seed using cyclone seeder, seed drill, or hydro seeder. • Provide adequate water to add in establishment of vegetation. ■ Use of appropriate mulching techniques. • Limitations Vegetation is not appropriate for areas subjected to heavy pedestrian or vehicular traffic, As a temporary technique, vegetation may be costly when ograined redsto o other techniques. iq applied. d Vegetation is not appropriate for rock, gravel or course Maintenance Requirements Protect newly seeded areas from excessive runoff and traffic until estan bilithe hed.estaAhmeet waterinof fertilizing schedule will be required as part of the SWPPP to assist vegetation. Mulching Description r barren to Mulching is a layer of straw or other material which i�sP spread Jude organic ema erialsastraw, reduce the effects of erosion from rainfall. Types of wood chips, bark or other fibers, decomposed granite, and gravel. Primary Use Mulch is used to temporarily and/or permanently stabilize clear or freshly f seed waeter areas. t pprotects the soil from erosion and moisture loss by leasing the sunlight. It also decreases the velocity of sheet flow, thereby reducing the volume of sediment - g • • laden water flow leaving the mulched area. Applications Mulch may be used on any construction -related disturbed area for surface protection including: Freshly seeded or planted areas, Areas at risk due to the time period being unsuitable for growing vegetation, Areas that are not conductive to seeding or planting. Design Criteria Mulch may be used by itself or in combination with netting or other anchors to promote soil stabilization. Several manufactures provide organic mulch with an attached netting o simplify anpplifyrequinstall a ion. Installation requirements should adhere to manufactures specifications Choice of mulch depends largely on slope, climate, and soil type in additionto ieir tao a tlaavai la ilityanf different materials. Straw and hay are the recommended choice biodegradability. Mulch should be applied in an even and uniform manner where concentrated water flow is negligible. In the North Central Texas area, the application of mulch should be approximately 2 tons dry per acre spread uniformly across the disturbed area. For areas using straw mulch and the slope is greater than 3-5%, anchoring of the mulch with a 'Crimper Tool is required. Limitations Mulches are subject to removal by wind or water under severeclimatic dons. Mulches lower the soil temperature which may result in longer seed gconditions. Maintenance Requirements Mulched areas must be inspected on a weekly basis, and a ter related significant events.gnnt rainfall, high thin n or bare spots caused by natural decomposition or weather areas should be replaced on a regular basis to maintain uniform protection. • Erosion Control Mats Description An Erosion Control Mat (ECM) is a geotextile or biodegradable fabricoss placedbover ven dost urbed areas to limit the effects on erosion due to rainfall impact and Erosion control mats are manufactured by a wide variety ofovendorrs d rsenng wide n variety flow. Typ of conditions such as vegetation establishment and high velocity include organic (jute, straw) and synthetic (excelsior and fiber glass) materials. Primary Use sturbed Mats can be provided both temporary and/or permanent asuch aslization for steep slopes, temporary temporary soilar r barren areas. It is used for difficult to stabilized areas. Some mats are permanent drainage swales, embankments or high traffic (pedestrian) reusable, reducing the initial cost of the instillation. Applications r Mats can be used on any construction -related disturbed area, but are pas icularl benksarly ffective wheoe erosion control of fine grained soils, and on short, steepslopes np erosion is high and growth of vegetation is slow. Design Criteria A mat may be used by itself or in combination with netting then anchors soil to prod moto soility. soil stabilization. Choice of matting depends largely on slop Mats are usually installed to the manufacturer's riifo m contactcommended gw �hlthessoiA secuppYo°f t}�tee instillation, the matting should be checked for: u lap joints; and flushness of the staples with the ground. Manufacturers information will verify acceptable applications for a particular product. Limitations n Although matting is highly effective in controlling erosion.,tixiateinstallatctive �an other BMPs for erosion control and it requires a contractor with considerable experience for installation. Maintenance Requirements Matted areas mustbe inspected on a weekly basis, and after significant rainfall, for bare spots caused by weather related events. Missing or loosened matting rriust be replaced or re- • • anchored Silt Fence Description sts A silt fence consists of geotextile fabric stretched between eitherded in the soil. e wooden s typically loo aced with the lower edge of the fabric securely b�runoff in the form of sheet flow. Silt fence downstream of disturbed areas provides both filtration and time for sedimentation to reduce se sinceent ndit it reducesan relocated the velocity of the runoff. Properly designed silt fence is economical during construction and reused on other projects. Primary Use Silt fence is normally used as a perimeter control for downstream of construction sites. It is only feasible for non -concreted, sheet flow conditions. Applications Silt fence is an economical means to treat overland, non -concentrated flows for all types of rojects. Silt fences are used as perimeter control devices for both arse to site develoth colty sop metent sand linearr (roadway) type Pro]to p projects. They are most effective the potential of clogging, silt fence should not be used with clay soil types. In order to reduce the length of the silt fence, it can be placed adjacent to the downstream side of the construction activities. Design Criteria * Fences are to be constructed along a line of constant elevation (along a contour lime). • Maximum slope adjacent to the fence is 1:1. 4 Maximum distance of flow to the silt fence shall be 150 feet. • Maximum concentrated flow to silt fence h thesall be 1 Standard sieve No. 200, Select ▪ If 50% or less of the soil, by weight, passes the Equivalent Opening Size (E.O.S.) to retain 85% of the soil. • Maximum EOS shall be 70 (#70 sieve). • Minimum EOS shall be 100 (#100 sieve) . ■ If 85% or more of soil, by weight, passes the U.S. Standard sieve No. 200, silt fences shall not be used due to clogging. • Sufficient room for the operation of sediment removal t alequipment erly shall be maintain the ided e. between the silt fence and other obstructions in order bypass of storm water. • The ends of the fence shall be turned upstream to prevent yP Limitations Minor ponding will occur at the upstream side of the silt fence resulting in minor localized flooding. Fences which are not constructed on a level contour will be overtopped by concentrated flow resulting in failure of the filter fence. Silt fences subject to areas of concentrated flow (waterways with flows > 1 cfs) are not acceptable. Silt fence can interfere with construction operations, therefore planning of access routes onto the site is critical. Silt fence can fail structurally under heavy storm flows, creating maintenance problems and reducing the effectiveness of the system. Maintenance Requirements Inspections should be made on a regular basis, especially after a large storm events. If the fabric becomes clogged, it should be cleaned or if necessary, replaced. Sediment should be removed when it reaches approximately one-half the height of the fence. • Straw Bale Dike Description A straw bale dike is a temporary barrier constructed of straw bales anchored with wood or steel posts, which is used to intercept sediment -laden runoff generated by small disturbed areas. The hay bales can serve as both a filtration device and a dam/dike device to treat and redirect flow. Primary Use A straw bale dike is used to trap sediment -laden storm runoff from a small drainage o s talwith relatively level grades, to allow for reduction of velocity thereby causing sediment out. Applications Straw bale dikes are used to treat flow after it leaves a disturbed cstfective for small area on a v rpelatively ofcts a (< acre) site. Due to the limited life of the hay bale, it short duration. The limited weight and strength of the hay bales makes it suitable for small, flat (< 2 percent slope) contributing drainage areas. Due to the problems with the straw • • degradation and The lack of uniform quality in hay bales, their use is discouraged except for small residential application. Straw bales can also be used as check dams for small watercourses such as interceptor swales and borrow ditches. Due to the problems insecurelydaanchoring the bales, only small watercourses can effectively use hay bale check Design Criteria • Straw bale dikes are to be constructed along aline of constant elevation (along a contour line) . • Straw bale dikes are suitable only for treating sheet flows across grades of 2% or flatter. • Maximum contributing drainage area shall be 0.25 acre per 100 linear feet of dike. • Maximum distance of flow to dike shall be 100 feet. • Dimensions for individual bales shall be 30 inches minimum length, 18 inches minimum height, 24 inches minimum width and shall weigh no less than 50 pounds when dry. • Each straw bale shall be placed into an excavated trench having a depth of 4 inches and a width just wide enough to accommodate the bales themselves. • Straw bales shall be installed in such a way that there is no space between bales to allow for any kind of seepage. • Individual bales should be held in place by no less than two wood or steel stakes driven a minimum distance of 6 inches into undisturbed ground, with the first stake driven at an angle toward the previously installed bale. • The ends of the dike shall be turned upgrade to prevent bypass of storm water. Limitations Due to a short effective life caused by biological decomposition, however, d after a period of no more than 3 months. During the wetand warm seasons, however must be replaced more frequently as is determined by frequent inspections. Straw bale dikes are not recommended for use with concentrated flows of any kind except for small flows in which they can serve as a check dam. The effectiveness of straw bales in reducing sediment is very limited. Improperly maintained, straw bales can be a negative impact on the water quality of the runoff. Maintenance Requirements Straw bales shall be replaced if there are signs of degradation such as straw located down stream from the bales, structural deficiencies due to rotting straw in the bale or other signs of • deterioration. Sediment approximately 6 inches. Sediment Basin should be removed from behind the bales when it reaches a depth of If the bales become clogged they should be replaced immediately. Description A sediment basin is a pond area with a controlled outlein hehich runoffalment-laden runoff is It provides treatment for directed to allow settling of the suspended sediment from acs the runoff as well as detention and controlled release of runoff, minimizing flood irnp downstream. Primary Use the basin. Sediment basins should be used for all sites with adequateen drainage pace to � nage a eaesed sediment basans are r sites with disturbed areas of 10 acres and larger in a common required as either temporary or permanent controls unless specific site conditions limit their use. Applications • Sediment basins serve as treatment devices which can be sed on a variety of e areas of land are roject types the is normally used in site development projects in which gfor basin, a stream or drainage way crosses the site, or a specific Bond feature is pla oe educe e site. Sediment basins are highly effective for the design storm maintenance requirements due to the central location of the sediment and minimal structural requirements of the basin. Design Criteria ▪ Maximum drainage area contributing to the basin shall be 100 acres. ▪ Minimum drainage of the basin shall be 3600 cubic feet per acre of contributing ▪ Deposited sediment shall be removed when the storage capacity of the basin has drainage area. been depleted by one-half. • Minimum width of the embankment at the top shall be 8 feet. ▪ Minimum embankment slope shall be 3:1. • Maximum embankment height shall be 6 feet measured from the toe of slope on the downstream side. ■ The basin outlet shall be designed to accommodate a 10 year design storm without causing damage to the containment structure. • Minimum outlet capacity shall be 0.CFS F ffective flow length of per acre of contributing hedbas�n agsh uld be at ▪ The basin must be laid out such that • least twice the effective flow width. A design worksheet is provided in Appendix A based on U.S. Soil Conservation Service TR -55 for proper design of sediment basin. Limitations Sediment basins can be rather large depending on site conditions, requiring the use of expensive development area and comprehensive planning for construction phasing prior to implantation. Storm events which exceed the design storm event can cause damage to the spillway structure of the basin. Maintenance Requirements Sediment shall be removed and the basin shall be regarded to its original dimensions at such point where the capacity of the impoundment has been reduced to one-half of its original storage capacity. The removed sediment shall be stockpiled or redistributed in areas which are protected from erosion. The basin outlet structure and emergency spillway (if present) should be checked frequently and after each major rain event to check for damage and to insure that obstructions are not diminishing the effectiveness of the structures. Sand Bag Berm Description Sandbag berms consist of stacked sandbags installed across a watercourse to direct flow downstream of disturbed areas. There are overflow pipes has occurred. Primary the top of the berm to allow controlled outflow of water after sedum Primary Use A sandbag berm is a temporary sediment control method that address the problem of construction in creeks, channels and other watercourses which carry a constant flow and is subjected to high, concentrated flows. A sandbag berm can also be used to create a small sedimentation pond prior to the completion of a permanent detention basin. Sandbag berms can be used as check dams in temporary swales or borrow ditches. Sandbag berms are not suitable for typical perimeter controls where sheet flow is prevalent. • Applications During utility or any type of construction in channelretearn bedsberms an be used a, sandbag s cheek dams can be used as check dams across channels or stream beds, sandbag across channels, serve as a barrier for utility trenches ore provide ovietemporay el crossing for construction equipment without seriously affecting sdrSandbag berms can also be installed parallel to the road providing acorridor dorat a sand bag dike ticsimilar to that provided by a silt fence or hay bales with the exception of controlling much higher flows and is much more temporary sediment basin with the added berms can be used to divert or direct flow or createa P dimension of being able to be moved to accommodate changes in construction much more easily than compacted earth berms. • • Design Criteria ■ Dikes are to be constructed along >� Maximum flow through rate shall ▪ Minimum height shall be 18 inche ■ Minimum width of the berm shall bottom. i Maximum side berms shall be 2:1. • Sandbags shall consist of polypropylene, polyethylene or polyamide woven fabric with a minimum unit weight of 4 ounces per square yard, a mullen burst strength of 300 psi minimum and ultraviolet stability exceeding 70 percent, and shall be filled with coarse sand or pea gravel. ■ 4" diameter SDR -35 or greater PVC pipe segments approximately 24 inches in length shall be used immediately below the top layer of sandbags to allow for overflow of the For severe velocities or high flows, woven mesh wire can be used to maintain berm. e integrity of the berm. i Sufficient room for the operation of sediment removal equipment shall be provided between the berm and other obstructions in order to properly remove sediment. • The ends of the berm shall be turned upgrade or shall tie into natural grades to prevent bypass of stormwater. level contours for use as perimeter control devices. be 0.1 CFS per square foot of berm surface. s. be 18 inches at the top and 48 inches measured at the Limitations Sandbag berms are a costly, labor intensive technique which issuies iaablet o ybfor o for low flow areas ted to high concentrated flows. The permeability of the berms perimeter conditions. Ponding will occur directly upstream from the berm creating the possibility of a flooding concern which should be considered prior to its placement. For sandbag berms located in high flow areas such as a creeks, the potential for berm damage during high flow increases the requirement for maintenance. Maintenance Requirements Inspections should be made on a daily basis and after each rain event. The sandbags shall be reshaped or replaced as needed during the inspection. Silt should be removed when it reaches a depth of six (6) inches. In addition, regular inspections should be made on the PVC pipe segments to assure clear flow. • • • INSPECTION REPORT Area Inspected Date Name of Inspector Title Observat • SECTION C • BMP DIAGRAMS BMP »W RANTS EROSION CONTROL MATS MULCHING SAND BAG BERM HAY BALE DIKE SILT FENCE SEDIMENT BASIN WATERBREAK CONSTRUCTION BROAD BASED DRAINAGE DT CULVERT CONSTRUCTION LOW WATER CROSSING DRAINAGE DIP i EROSION CONTRC•L MATS 1177, STURB DI1C� ED soil =-, flLE: BUNS E-6 4RAFSFD HY: 00G DAME: 2/14/07 FLOWUNE OF CHANNEL OR SWALE FILL BUYS\S-6, OWAFTED %ft DOC DAM 2/47/97 MOTTO WAS FLOW FLOW I : 1 : 1 `k : 1 : 1 11 1:1:1:1:1:1:1:1:1 I:i!1 1 fy`1:1' j y.1:I:11i1:1:1 i i :1:1:1:1 : - VERTICAL FACE EMBEDDING DETAIL TWO STAKES PER BALE (STAKES 6" MIN. IN GROUND) ANGLE FIRST STAKE TOWARD PREVIOUSLY LAID BALE ..1:01. :14:1:1;x:1:1 :1:Y:I:C:1:1:1:1:1:1: I:1wi:1:Iv1:1:1�4 y 1 i11: 1 :141+1:1' :1 r�f:I:4yl:i;�►+I:1 ;1:1:1:1:1:1:1:1:1'} :114x,1;1 '1:1:1:1:1: 1:1: ANCHORING DETAIL • FILE BUYS\S-5 CRAFTED FM: OW pkTE: 2/14/Q7 HOT TO SCa1LS WIRE OR NYLON BOUND BALES PLACED ON THE CONTOUR Hay Bale Dike DISTURBED AREA SILT FENCE DRAINAGE AREA UMITS STABILIZED AREA SUPPORTS 6' 0/C Silt Fence rut:: BuYS\S--s DRAFTED ax: rsoc wrE: 2/14/117 • CROSS SECTION HIGH FLOW SPILLWAY DESIGN HIGH WATER 1 MAX DESIGN CAPACITY r Max 1' MIN SEDIMECATION BASIN Vol.= Drainage Area (Ac.)* 134 CY 011 f1LE EILYS\S-3 DRUTE3 VP DDG DATir 1/14/47 L EMERGENCY SPILLWAY 3 EARTH OR q STONE BERM OUTFALL DEWATERING OUTLET MAX. Sediment Basin • SLOPE DIRECTION .002 IN CHANNEL GRADE arggraffajg- Space water breaks 50 to 200 ft. apart depending on grade, soil and preciait ticr.. nuE BUYS\S-2 DRAFTED 9Y: 6OC f1ATE: 2/14/97 Waterbreak ConstrUcfTon for Pipeline and Buried Cables • 400 SPACING = SLOPE % 100 20' 3% OR GREATER OUTSLOPE 1.2 x SLOPE % WALL DRAJN, 3% MIN, SLOPE NOTE: USE WHEN ROADS WILL BE OPEN TO NE PUBLIC. RLE SUYS\S-2 DRAFTED WI DD 4 DATE 2/17/27 NOT TO SCALE Profile View of Broad Based Drainage Dip Use for Permanent Roads Where Road Gradient Does Not Exceed 1 0% • • ROUNDED SLOPE 7,11 Tf- �O %1' Ir1fN. " CROWN `'a C.M.P. CULVERT –00— 2" FROM END OF PPE OR 1PIPE DIA. (whichever is greater) C.M,P. CULVERT INSTALLATION MIN1MUM 2:1 DOWNGRADE SIDE ROADBED —' 1 :1 SLOPE COMMON Y7 :1 SLOPE ROCK DITCH CONSTRUCTION AT SIDE HILL C.M.P. CULVERT INSTALLATION MIN. C.M.P. CULVERT " CROWN C.M.P. CULVERT INSTALLATION EMBANKMENT SECTION MINIMUM 2:1 t GENERAL NOTES: 1. IN BEDDING OF C.M.P. CULVERTS, IF THE FOUNDATION IS ROCK, EXCAVATE TO DEPTH OF 8 INCHES BELOW CULVERT GRADE AND REPLACE WITH EARTH CUSHION. 2. MINIMUM COVER OVER CULVERT IS ONE FOOT (1 `}. 3. MINIMUM CULVERT DIAMETER IS 18". 4, MINIMUM CULVERT SPACING: 1-2% GRADE – 1000 FEET MINIMUM b 2--4% GRADE – 800 FEET MINIMUM 4-6% GRADE – 600 FEET MINIMUM d 6-8% GRADE – 400 FEET MINIMUM B -1C% GRADE – 250 FEET MINIMUM FILE: 9WS\S-10 DRAFTED BY: DOG GATE: 2/17/97 NOT TO SCALE RIPRAP RIPRAP Typical Culvert Construction I I I I I I I I I I I I I 111,-- /40 • ACCEPTABLE STOCKPILES FOR REHABILITATION NOT ACCEPTABLE FILE: BUYS\s-7 DRAFfm BY: 00C DATE; 2/17/47 NCT TO SCALE FILL NOT ACCEPTABLE Low--Wafer/Dry Creek drainage Crossing SPACING OF DRAJNAGE DIPS SHALL NOT EXCEED 1000' SPACING DEPENDS UPON GRADE, SOIL AND PRECIPITATION GF�pOE FLO `° RIPRAP 9rryU etsL RIPRAP NOTE: ALL WATERBREAK MATERIAL SHALL BE TAKEN FROM THE WATERBREAK DIP OR FROM THE DITCH UNE. H—MIN. OF 5 FT. CROSS --SECTION OF WATERT BEAK ROAD GRADIENT 0 H A B 2% 0.6' 0.4' 10' 10' 4% 1.0° 0.8' 14' 14' BX 1.2' 1.4' 16' 18' 8% 2.0° 2.2' 22' 24' RLE: BUYS \S-9 DRAFTED 9Y': DOC ❑AT'E 2/20/97 NOT TO SCALE Drainage Dip Illustratior for Slight to Moderate Slope for Access Roads