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HomeMy WebLinkAbout1.0 ApplicationGARFIELD COUNTY Building & Planning Department 108 8th Street, Suite 401 Glenwood Springs, Colorado 81601 Telephone: 970.945.8212 Facsimile: 970.384.3470 www.garrield-county.com Special Use Permit GENERAL INFORMATION (To be completed by the applicant.) % Street Address / General Location of Property: Located approximately six miles Northeast of Rifle, off of County Road 233 % Legal Description: Located in the NW 1/4 of SE'/, Section 32, Township 5 South Range 93 West of the 6`" P.M. %4 Existing Use & Size of Property in acres: Farm and Grass Lands/ Oil & Gas Production % Description of Special Use Requested: To obtain permission to continue utilizing an existing Frac/ Flowback Water pit for storage of water to be recycled for continued frac and drilling operations of Natural gas. % Zone District: ARRD % Name of Property Owner (Applicant): Mr. & Mrs. Gene Mulvihill % Address: 355 Madison #3 Telephone: (973) 267-5450 % City: Morristown State: NJ Zip Code: 07960-6910 FAX: 209-4764 % Name of Owner's Representative, if any (Attorney, Planner, etc): Wagon Wheel Consulting, Inc. % Address: 111 E. 3`d Street, Suite 213 Telephone: (970) 625-8433 % City: Rifle State: CO Zip Code: 81650 FAX: 625-8435 % Doc. No.: % Planner: STAFF USE ONLY Date Submitted: Hearing Date: TC Date: 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 not 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. I have read the statements above and have provided the required attached information which is correct and accurate to the best of my knowledge. (Sig ureofapplicant/owner) Last Revised: 02/2006 GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT AGREEMENT FOR PAYMENT FORM (Shall be submitted with application) GARFIELD COUNTY (hereinafter COUNTY) and Antero Resources Piceance Corporation (hereinafter APPLICANT) agree as follows: 1. APPLICANT has submitted to COUNTY an application for Lundgren Frac/Flowback Water Pit (hereinafter, THE PROJECT). 2. APPLICANT understands and agrees that Garfield County Resolution No. 98-09, as amended, establishes a fee schedule for each type of subdivision or land use review applications, and the guidelines for the administration of the fee structure. 3. APPLICANT and COUNTY agree that because of the size, nature or scope of the proposed project, it is not possible at this time to ascertain the full extent of the costs involved in processing the application. APPLICANT agrees to make payment of the Base Fee, established for the PROJECT, and to thereafter permit additional costs to be billed to APPLICANT. APPLICANT agrees to make additional payments upon notification by the COUNTY when they are necessary as costs are incurred. 4. The Base Fee shall be in addition to and exclusive of any cost for publication or cost of insulting service determined necessary by the Board of County Commissioners for the consideration of an application or additional COUNTY staff time or expense not covered by the Base Fee. If actual recorded costs exceed the initial Base Fee, APPLICANT shall pay additional billings to COUNTY to reimburse the COUNTY for the processing of the PROJECT mentioned above. APPLICANT acknowledges that all billing shall be paid prior to the final consideration by the COUNTY of any land use permit, zoning amendment, or subdivision plan. APPLICANT Date: R1 200,) Cody W. Smith Print Name Mailing Address: Wagon Wheel Consulting, Inc 111 E. 3`d Street, Suite 213 Rifle, CO 81650 _J/2004 Page 4 11111161 ANTERO RESOL RCES SPECIAL USE PERMIT APPLICATION LUNDGREN FRAC/FLOWBACK PIT GARFIELD COUNTY COLORADO, USA WAGON WHEEL CONSULTING 111 E. Third St, Suite 213 Rifle, CO 81650 (970) 625-8433 SPECIAL USE PERMIT ANTERO RESOURCES PICEANCE CORPORATION LUNDGREN FRAC/FLOWBACK PIT TABLE OF CONTENTS Part I Part II Part III Part IV Part V Part VI SUP Application Associated Permits Project Description Impact Statement Site Plan Surface Topo Map Part VII Area Parcel Map / Adjacent Landowners Part VIII Proof of Ownership / Land Agreements Part IX Part X Part XI Part XII Part XIII Part XIV Legal Description Emergency Response Plan Landscaping & Reclamation Plan Stormwater Management Plan RECEIVED Dk ` 1 5 2006 U� DING COUNTY PLANNING Spill Prevention Control & Countermeasure Plan (SPCC Plan) Weed Control Plan WAGON WHEEL CONSULTING CODY W. SMITH 111 E. 3RD STREET, SUITE 213 RIFLE, CO 81650 OFFICE: (970) 625-8433 FAX: (970) 625-8435 CELL: (303) 902-1532 November 30, 2006 Garfield County Building & Planning Department 108 8th Street, Suite 201 Glenwood Springs, CO 81601 RE: Agent Authorization To Whom It May Concern: Wagon Wheel Consulting, Inc. (Cody W. Smith) has been retained by Mr. & Mrs. Gene Mulvihill to request a Garfield County Special Use Permit for a Frac/ Flowback Water Storage Pit to be utilized solely by Antero Resources Piceance Corporation on the Lundgren Property located Northeast of Rifle, CO. I authorize Wagon Wheel Consulting, Inc. (Cody W. Smith) to act as agent on my behalf. Please contact me at (973) 267-5450 if you have any questions or concerns. Sincerely, Gene Mu vihill WAGON WHEEL CONSULTING CODY W. SMITH 111 E. 3R) STREET, SUITE 213 RIFLE, CO 81650 OFFICE: (970) 625-8433 FAX: (970) 625-8435 CELL: (303) 902-1532 November 29, 2006 Garfield County Building & Planning Department 108 814 Street, Suite 201 Glenwood Springs, CO 81601 RE: Agent Authorization To Whom It May Concern: Wagon Wheel Consulting, Inca (Cody W. Smith) has been retained by Antero Resources Corporation (Antero) to request a Garfield County Special Use Permit: for a Frac/ Flowback Water Storage Pit to be utilized solely by Antero on the Lundgren Property located Northeast of Rifle, CO. I authorize Wagon Wheel Consulting, Inc. (Cody W. Smith) to act as agent on my behalf. Please contact me at (970) 625-9922 if you have any questions or concerns. ncerely, i *Amok S w ,- Antero Resources Corporation State of Colorado.' Oil and Gas Conservation Commission 1120 Lincoln Street, Suite 801 Denver, Colorado 802031303) 894.2100 Fax 1303) 894-2109 BONDth NO: LPM8756615 . This bond is a perpetual instrument which shall remain in force and effect until all obligations have been met and / surety Provider No: e bond is released by the Colorado Oil and Gas Conservation Commission. J OGCC Oper. No: I FATS No: PERFORMANCE BOND FOR OGCC USE ONLY KNOW ALL PERSONS BY THESE PRESENTS, That we, Antero Resources II Corporation of the County of Denver In the State of Colorado as principals, and Fidelity and Deposit Company of Marylapes surety, authorized to do business in the State of Colorado, are held hereby and firmly bound unto the State of Colorado, In the penal sum of ($30,000.00 ) Thirty Thousand & No/100 Dollars, lawful money of the United States, for the faithful payment of which we hereby bind ourselves, our heirs, executors, administrators and assigns. The condition of this obligation Is that whereas the above bounden principals propose the following oil and gas operation(s) on lands situated in the State of Colorado. Type of Bond Lit n n n Plugging Surface Seismic E&P Waste Facilty Downstream Gas Facilities X Coverage Blanket n Individual 0 Plugging 1 well 0 Surface for 1 well 0 Irrigated 0 Non -irrigated Excess Inactive Wells Location Complete for Individual Bonds Wel Name and Number. Owner of fends where off-site land -treatment facility Is located: OVOV, sec, Twp, Rnp, Meridian: County: NOW, THEREFORE, If the above bounden principals shall comply with all of the provisions of the laws of the State of Colorado and the rules, regulations and requirements of the Oil and Gas Conservation Commission of the State of Colorado, with reference to properly plugging of said well or wells; with reference to land damages and the restoration of the land, as nearly as possible, to its condition at the beginning of the lease; with reference to seismic operations the proper surface restoration and plugging of any shot holes, then this obligation is void; otherwise, the same shall be and remain in full force and effect. Witness our hands, Principal: Antero Resources II Corporation Address: 1625 17th Street. 3rd Floor City: Denver State; CO Phone: (303) 357-7310 Fax: Zip: 80202 thisl3th day of September 2004 Signed: Name Printed: Witness our hands th Surety: Fir9o1ity and nopncit r`nmpnny of Meryl Address: 1400 American Lane, Tower I City: Schaumburg State: IL Zip:60196-1056 Phone:(800) 382-2150 • Fax: and Signed: 3th day of Sepxember, 2004 Name Printed: Sandra J. Shryack Approved: Dated: Director, OII and Gas Conservation Commission Bond Release Approved: Release Date: Director, 011 and Gas Conservation Commission i 0 • CBOND NO: LFM8756616 . This bond is a perpetual instrument which shall remain in force and effect until all obligations have been met and the bond is released by the Colorado 011 and Gas Conservation Commission. °tflorado yr itt Oil and -Gas Conserve tion Commission 1120 Lincoln Street, Suite 801, Denver, Colorado 8020313031894.2100 Fax 13031 1303(8942199 PERFORMANCE BOND oR oecc USE oat surety Provider No: OGCC Oper. No: I FATS No: KNOW ALL PERSONS BY THESE PRESENTS, That we Antero Resources II Corporation of the County of Denver in the State of Colorado as principals, and Fidelity and Deposit Company of Merylands surety, authorized to do business in the State of Colorado, are held hereby and firmly bound unto the State of Colorado, in the penal sum of ($ 25, 000.00 ) Twenty -Five Thousand & no/100 Dollars, lawful money of the United States, for the faithful payment of which we hereby bind ourselves, our heirs, executors, administrators and assigns. The condition of this obligation Is that whereas the above bounden principals propose the following oil and gas operation(s) on lands situated In the State of Colorado. x Type of Bond Plugging Surface ❑ Seismic C E&P Waste Facilty Downstream Gas Facilities Coverage Fl Blanket ri Individual ❑ Plugging 1 well ❑ Surface for 1 well ❑ Irrigated ID Non -irrigated IHI Excess Inactive Wells Location Complete for Individual Bonds Well Name and Number. Owner of lands where off-site land -treatment facility Is located: OtrCttr, Sec, Twp, Rng, Meridian: County. NOW, THEREFORE, If the above bounden principals shall comply with all of the provisions of the laws of the State of Colorado and the rules, regulations and requirements of the Oil and Gas Conservation Commission of the Slate of Colorado, with reference to properly plugging of said well or wells; with reference to land damages and the restoration of the land, as nearly as possible, to its condition at the beginning of the lease; with reference to seismic operations the proper . sulfaterestoration and plugging -of -any shot holes, then thisobligaflon is Vold; othenviSe, the -Sine shall be arid ibrfitin fn force and effect. Witness our hands, thisl3th day of September 2004 Principal: Antero Resources II Corporation Address: 1625 17th Street, 3rd Floor city: Denver State: CO Phone: (303) 357-7310 Fax: Zip: 80202 Signed: Name Printed: Witness our hands, thi d Signed:'` Surety: Fidelity and napneift rnmpany nf Maryla Address: 1400 American Lane, Tower I City: Schaumburg State: IL Zip:60196-1056 Phone:(800) 382-2150 Fat: Name Printed: 3th day of Spptemb r, 2004 , // 47,7) �x J Sa ra J. S ryack Approved: Dated: 1 Director, 011 and Gas Conservation Commission Bond Release Approved: Release Date: Director, Offend Gas Conservation Commission 0 • FORM Pagel I 4 State of Colorado (..Ret r.^>, 011 and Gas Conservation Commission 112014,lx 3uroI Se la 031, Denver. Colorado 6Jm3Phone ymo)994. 2104 .2 SUNDRY NOTICE saved angina, prpy Tres Ione to be usedr general. Iech I and onywonmenlal....E& informarion. For proposed or completed operations.describe rn full on r cn - al Information Page (Page 2 of Iles r ) denlily )III well or Met facerty by API Number by OGCC Facility ID. Operator shall send an inlormelional copy of all andry conces for wells !Geared in MplDensity Aeas 10 1h0 Local Gmotel DeIg (Rule 60301 iI Li I. OGCC Operator Number: 100/94 Contact Name 2. Name of 0lxraloc Anlere Resources Corporation Steve Fonlenot 3 Address. 1625 1715 Street Suite 300 Phone: (910) 274-64 City: Denver Slate. CO Zip: 80202 Fax. (970)625-99 Complete the Arracnmenl priapism OP Oce,;; 5. API Number 05- 045-11276 CGCG Facility ID Number 6 WeltiFacility Name. Lundgren 7 We16Facility Number A-1 811they Plat 8 Localbn (090(r, Sec, Twp, Rng. Meridian): Otr.OIr.: NWSE. Sec. 32, Twp: 55. Rng:92W, Meridian. -6111. Directional Survey Surface Egpml Diagram 9. County. Garfield 10. Field Name: Wildcat 11. Federal, Indian or Slate Lease Number. Technical Info Page Other Map x X General Notice ❑CHANGE OF LOCATION: Attach New Survey Plat Chage of Surface Footage From Exterior Section Linux: Change el Surface Footage to Exterior Section Lines: Change of BoItomhole Footage from Exl&KK Seclgn Linea: Change of Bottomhole Footage to Exterior Section Lines' Boaonhole locabon O9IOU. Sec. Twp. Rng, Mer (a change of surface 1r111)691. gtrlgfr I'1 I is substantive an requires a new peanut) GIAH u I I acorn direstlonel survey public rd, utility or RR ____, f 1 r J 1 I bldg, Density Latitude Distance to nearest lropery line Distance to nearest Is location in a High Surface w.mer consultation Longitude Distance lo nearest lease line Area (rube 6035)7 vnrame[' Grand Elevation Distance to nearest well wine formation dale'. GPS DATA: Date of Measurement PDOP Reading Instrument Operala'o Nave QCHANGE SPACING UNIT Formation Formation Spacing order number Unit Acreage Ural wnuguralwn Remove from surface bond Signed surface use agreementauacned lI]CHANGE OF OPERATOR (prior to drilling): EeectNe Dale: ❑CHANGE WELL NAME NUMBER From: Plugging Bond: O Blanket • Individual To: EBeclive Dale: !]ABANDONED LOCATION: IJNOTICE OF CONTINUED SHUT IN Dale well shut in or lemporariry abandoned: Has Production Equipment been removed from MIT required 8 shut in longer than Mn years STATUS Was location ever built? 111 Yes No is si0 ready for Inspection? fl Yes No Date Ready for Inspection: site? Yes .No Dalo of last MIT !]SPUD DATE: !]REQUEST FOR CONFIDENTIAL STATUS t6 nwsewa dale ram:g w0 i■ SUBSEQUENT REPORT OF STAGE, SQUEEZE OR REMEDIAL CEMENT WORK •subnilcbl andcemenijob summaries ecu volume Cement top Cement bottom Oate Method used Cementing fool sedingiped depth Gen L L L J RECLAMATION: Vlach technical page describing final reclamation procedures per Rule 1004. Final reclamation will commerce on approximabuly Final reclamation is completed and site is ready for inspection. Technical Engineering/Environmental Notice ENolke at Intent ApproximaLe Slarl Dale. ❑Reporlol Work Done Dale Work Completed'. Details of work must be described to lull on Technical Information Page (Page 2 must be submitted.) [DIntenl to Recompiele (submllfarm 2) QRequesf to Vena or Hare ❑EBP Waste Disposal ❑Change Drilling Plans CRepair Well ❑Beneficial Reuse of ESP Waste ❑Gross Interval Changed? CRule 502 variance requested DSlalus UpdaleiChange of Remediation Plans Ecasing;cemenfng Program champ EjONer: Special Use Pit perm la Spills and Releases I hereby ce�ity that the statements made In This form are, to the best olmy knowledge, true. correct and complete. Signed. jsT` .45kAn Date: 12i20,65 Email sfonle anantero _-a_com Print Nanre. Slee Fonlenot Tite. Operations Superintendent 00000 Approved: TNe CONDITIONS OF APPROVAL. IF ANY: Date'. FORM 4 Rev 12/05 Page 2 TECHNICAL INFORMATION PAGE 1. OGCC Operator Number: 10079 API Number: 05-045-11276 2. Name of Operator: Antero Resources Corporation OGCC Facility ID # 3. Well/Facility Name: Lundgren Well/Facility Number: A 4. Location (QtrQtr, Sec, Twp, Rng, Meridian): NWSE, Sec. 32, T5S, R92W, 6 PM This form is to be completed whenever a Sundry Notice is submitted requiring detailed report of work to be performed or competed. This form shall be transmitted within 30 days of work completed as a "subsequent' report and must accompany Form 4. page 1. 5. DESCRIBE PROPOSED OR COMPLETED OPFRATIONS FOR (GCC USE ONLY Install 175' X 225' X 8' lined special use pit for flowback water and frac fluids. Pit will be installed next to constructed pad site. Antero has property owner authorization for construction of hte pit. OFFICE OF THE STATE ENGINEER DIVISION OF WATER RESOURCES 303-866-3581 FOR OFFICE USE ONLY \AM NAME NO. WATER DIV: DIST: NOTICE OF INTENT TO CONSTRUCT A NON -JURISDICTIONAL WATER IMPOUNDMENT STRUCTURE.' This notice is required per Section 37-87-125, C.R.S. (1998). This notice must be submitted to the Division Engineer's Office a minimum of 10 days prior to construction. OWNER INFORMATION (PLEASE PRINT OR TYPE NOTICE) Name: Antero Resources Pieceance Corporation Telephone: ( 970 ) 625-9922 Address: 1625 17th Street, Suite 300 Street/P.O. Box/ Rural Route Responsible Person: Steve Fontenot Denver CO City State 81650 Zip Code Telephone: ( 970 ) 274-6454 Address: 792 Buckhorn Drive Rifle CO Street/P.O. Box/ Rural Route City State Contractor: Wagon Wheel Consulting, Inc. STRUCTURE INFORMATION Name of Dam: .ocation: Option 1 OR Option 2 Lundgren Frac/ Flowback Pit 81650 Zip Code Telephone: ( 970 ) 625-8433 Water Division: Water District: '/JASect: NW Qtr Sect: SE :. Sect:- 32 Township: •5S Range: 93W P.M. 6th Distance of dam from Section lines 2 2055 ft from DN N, S, 1990 ft from XE DW Utilizing GPS: Set to UTM Datum:, Measure on crest of dam at streamline/outlet. Northing m. Easting m. Note: GPS settings must be NAD27 CONUS Dam Dimensions: Vertical Height: 8 ft. Length: 225 ft. Slopes: U/S: 1.5 H:1V, D/S 2 H:1V Reservoir: Surface Area: 1 acres, Capacity: 3.44 acre feet, Drainage Area: 0 acres Emergency Spillway: Width: 175 ft. Side Slopes: 1,5 H:1V, Freeboard: 2 ft.' Outlet Drain: Type: N/A Size: inches, Location Stream Name / or Water Source:4 Frac/ Flowback Water from Natural Gas Production activities. Proposed Water Use: Stora a and Rec clip Water C urt Case No. (If applicable) V-rok 1)111s Signature of Owner Date DIVISION ENGINEER'S REQUIREMENTS: DWR (12/98) Signature of Division Engineer Date Vertical height is 10 feet or less at longitudinal centerline of dam from lowest point of ground surface to flowline crest of spillway, and reservoir is 20 surface acres or less at high water line, and impounds 100 acre-feet or less of water. 2.See Example on reverse side of form Vertical distance from bottom of spillway to crest of dam. 4 If construction in reservoir intercepts groundwater (note stream name that groundwater is tributary to), a well permit is required. • 0 FORS 28 Rev sap State of Colorado Oil and Gas Conservation Commission 1120 Lincoln Street, Suite 801, Denver, Colorado 80203 (303) 8942100 Fax:1303) 894-2109 CENTRALIZED E&P WASTE MANAGEMENT FACILITY PERMIT Submit this Form and accompanying documents for each facility per Rule 908. Financial Assurance in the amount of $50,000 is required to operate each facility. i OGCC Operator Number- 10079 Name of Operator: Antero Resource Piceance Corporation Address: 1625 17th Street, Suite 300 Cky: Denver State: CO Z4: 80202 Contact Name and Telephone: Steve Fontenot No: (970) 274-6454 FOR OGCC USE ONLY Surety ID: Complete the Attachment Checklist op.r OGCC Fax. (970) 625-9929 Surface Owner (if different than above): Gene Mulvihill Address: 355 Madison Ave. #3 Cm,: Morristown Stab, NJ Zp: 07960 phone: (973) 2675450 Facility Name: Lundgren Frac/ Flowback Pit Address: City: Rifle Phone: State: C° Zip: 81650 Fax: Location (OtrQtr, Sec, Twp. Rng, Mer): NWSE, Sec. 32, TSS, R93W, 6th P.M. Sri. deeapa, hood, pool hydro A4arra land dominion Topeprapnc map Sda &snaps map Wel pnf sun J Scaled &."lava savoy rrsp.__ ✓ Fa ny deign & angn.arTg r/ / r Operatnp Ilan ✓ Wats analyse rapnxt Latitude: 39 deg. 34' 12.64" N Fnwohol aa&t Clears plan Local owl ?snap Lowe poll pwna and neo ✓ ✓ ✓ Longitude: 107 deg. 44' 22.92" W 1. Is the site In a sensitive area? 14 Y ❑ N 2. What ere the average annual precipitation and evaporation rates for the site? Precipitation: .7 ineheshrear Evaporation: 30 inches/year 3. Has a description of the sae's general topography, geology and hydrology been attached? p Y • N 4. Hass description of the adjacent land use been attached? 0 Y • N 5. Has a 1:24.000 topographic map been attached? Q Y showing ■ the site location N 6. Has a site plan show. g drainage pattems, diversion or containment structures, roads, fencing, tanks, pits, buildings and any other pertinent construction details been attached? 0 Y 0 N 7. 11 site is not owned by the operator, Is written authorisation of the surface owner attached? ❑✓ Y 0 N 8. Hes a scaled drawing and survey showing the entire section(s) containing the proposed facility been attached? 0 Y • N 9. What measures have been implemented to limit access to the facility by wildlife, domestic animals or by members of the public? Briefly explain. Antern Recnurra hae.conctr rtori a I'vectnrk fences arni inrt_fhe permitter nf the evicting farility fn mitigate fhn rick nf livectork and wildlife onter'nnthe cite nq wetLas to mitigates the risk nf unauthnri7ad percnnnel frnm entering the cite 10. Is there a planned Aralen of at least 10 feet in width treatment areas and within the perimeter fence? around 0 the active Y 0 N 11. Is there an additional buffer perimeter firelane? zone 0 of Y at least ■ 10 feet within the N 12. Have surface water diversion structures s 100 -year, 24-hour event? 0 been constructed to accommodate Y 0 N 13. Has a waste profile been calculated 0 according to Rule 808.b.6? Y 0 N 14. Has fealty design and engineering Rub 9g6.b.7? been S provided Y as required by • N 15. Has an operating plan been completed 0 Y • as required by Rule 908.1113? N 16. Has ground water monitoring for the ate ❑ been provided? Y ❑ N ^Mach Water Analysis Report, Form 25. for each monitoring well installed."' 17. Has financial assurance been provided Ely as required by Rule 704? ❑ N 18. Has a closure plan been provided? Q Y ■ N 19. Have local government requirements complied with? for 0 zoning Y and construction been • N 20. Have permits and notifications required by local other agencies been provided? [3] Y governments • and N Print Na: Steve niktrits ntenot Signed:-71.)a-kdiC Title: nkitAV OI S S kTC ek Date: td-'t3tete OGCC Approved: Title: Date: CONDITIONS OF APPROVAL., IF ANY: Facility Number: ANTERO RESOURCES PICEANCE CORPORATION LUNDGREN FRAC/ FLOWBACK WATER PIT PART III. PROJECT DESCRIPTION Antero Resources Piceance Corporation is planning to utilize an existing pit to temporarily store and recycle water from their natural gas frac and well completion operations. The existing pond is located within the NW '/4 of SW '' 4 of Section 32, Township 5 South, Range 92 West on Mr. and Mrs. Gene Mulvihill's property. Antero plans to utilize the existing pit as an emergency back up and temporary water storage pit. Water will only be stored in pit on a temporary basis until needed for completion operations associated with natural gas production. Antero is currently recycling and reusing all flowback and frac water for additional fracs. Occasionally the volume of water that is available is higher that what is needed to complete operations. During this period of over stock will be when the Lundgren pit will be utilized for temporary storage until demand for additional water is needed. The existing pond was constructed as a single pond with a capacity of approximately 42,715 barrels (BBL) of water. The flowback and frac water will be transported to and from the location by water tanker trucks. No pipelines will be constructed for the transportation of the water. No additional equipment such as tanks or pumps will be located at the facility. Water will be pumped to and from the trucks utilizing the existing pumps located on the trucks. The existing pond was constructed with a geosynthetic liner, which was installed and designed to protect ground water and to eliminate the risk of leakage. No additional leak detection systems were installed during the initial construction of the pond. The Lundgren Frac/ Flowback Pit will be permitted concurrently under the authority of the Colorado Oil and Gas Conservation Commission (COGCC). The process for obtaining a Centralized E&P Waste Facility Permit is currently in process. Antero will maintain compliance with the conditions of the County and State authorizations, and the operator must be familiar with the conditions placed o aerations of the facility. ANTERO RESOURCES PICEANCE CORPORATION LUNDGREN FRAC/ FLOWBACK PIT PART IV. IMPACT STATEMENT A. SECTION 5.03 REVIEW STANDARDS: 1) Utilities adequate to provide water and sanitation service based on accepted engineering standards and approved by the Board of County Commissioners shall either be in place or shall be constructed in conjunction with the proposed use. No additional utilities or services will be required or applicable to the operations of the existing facility. The existing facility will be utilized as an emergency back up pit to store flowback/ frac water temporarily until needed for natural gas production and completion operations. 2) Street improvements adequate to accommodate traffic volume generated by the proposed use and to provide safe, convenient access to the use shall either be in place or shall be constructed with the proposed use. Access routes to and from the site consist of State Hwy 13, and Garfield County Road 296, 291, 233. All roads have been upgraded and paved to provide safe access for all traffic. Antero is currently working with Garfield County Road and Bridge department to pay for half of the improvements to County Road 291 (Stevens Hill). Antero will insure that all subcontracted trucking companies are in compliance with all Local and State regulations. 3) Design of the proposed used is organized to minimize impact on and from adjacent used 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 to protect established neighborhood character. The Lundgren Frac/Flowback Pit will be inside a soil embankment. The external embankment slopes will be preserved and kept weed free for the life of the pond until reclamation occurs. The existing pond is located approximately 1.1 miles northeast from the nearest publicly accessible location (Ty Bar Ranch Enterance). The pond is located in a secluded area surrounded on three sides with trees and vegetation. Current land use in the area is primarily farming, livestock grazing, and natural gas development. The existing facility is not expected to change the established neighborhood character. B. SECTION 5.03.07 INDUSTRIAL OPERATIONS: 1) Existing lawful use of water through depletion or pollution of surface run- off stream flow or ground water. The Lundgren pit will store only water associated with completion and production development of natural gas wells on a temporary basis. No fresh water will be stored in the pit. The existing facility was designed as a no discharge facility. Two (2) foot of freeboard will be maintained within the pond, therefore, no discharge to surface water should occur. The pit is lined with a geosynthetic liner to mitigate the risk of discharge to ground water. 2) Impacts on adjacent land from the generation of vapor, dust, smoke, noise, glare, or vibrations, or other emanations. The operations of the pit are not expected to generate any levels of vapors, dust, smoke, noise, glare or vibrations that would impact adjacent land. The location of the pit is in a fairly secluded area protected by a large area of trees. The closest residence to the pit which sets at a lower elevation is approximately 900 feet to the northeast. The closest residence that is at the same elevation as the facility is approximately 1 mile to the west. The facility will not have any mechanical equipment for operations which will eliminate any risk of noise, vibrations, dust or smoke. Access roads into site will be watered as required for dust suppression during use of the pit. 3) Impacts on wildlife and domestic animals through the creation of hazardous attractions, alteration of existing native vegetation, blockade of migration routes, use patterns or other disruptions. The existing pit is not expected to have any major impacts to wildlife or domestic animals. A livestock fence has been constructed around the facility to eliminate the risk of animals contacting the water. Currently no migratory or water fowl deterrent system is in place. Antero has and will continue to monitor the existing pit for evidence of water fowl or migratory bird activity within the pond, which at that time will work with the U.S. Fish and Game Department to install a system that is acceptable to all parties. The existing facility occupies approximately one acre of land and is located within an area that very little vegetation for wildlife and livestock grazing is present. It is not anticipated that the location of the pit will impact any migration routes. 4) Affirmatively show the impacts of truck and automobile traffic to and from such used and their impacts to areas in the County. For normal operations, it is anticipated that one (1) round trip of a pickup will occur along State Hwy 13, County Roads 296, 291, 233. Given the current traffic volumes on Hwy 13 heading in and out of Rifle per day will result in no noticeable change to the total traffic volumes. The one (1) round trip per day is expected to have very minimal impacts along County roads and to this area of Garfield County. In worst case scenario which will not occur very often if at all, traffic volumes are expected to be as high as 31 roundtrips. This traffic volume will not be the norm but will be the maximum amount. Due to current operations by Antero and their reuse of all water, there will be days of no traffic at all. The Lundgren Pit will be utilized for emergency water storage backup, which water will be stored temporarily. 5) That sufficient distance shall separate such use from abutting property which might be otherwise damaged by operations of the proposed use(s). The nearest residence to the site is approximately 900 feet southeast of the Lundgren Pit, and is situated at a significantly lower elevation than the pit. Operations of the existing pit are not expected to produce noticeable impacts at this property. 6) Mitigation measures proposed for all of the foregoing impacts identified and for the standards identified in Section 5.03.08 of this Resolution. Antero Resources is currently implementing numerous plans and actions to insure compliance with all Federal, State and Local regulations. Antero will continue to implement these programs and will update these plans as needed to maintain mitigation measures to reduce and eliminate impacts. C. Section 5.03.08 [Industrial Performance Standards]: Pursuant to section 5.03.08 of the Zoning Resolution, all Industrial Operations in the County shall comply with applicable County, State, and Federal regulations regulating water, air and noise pollution and shall not be conducted in a manner constituting a public nuisance of hazard. Operations shall be conducted in such a manner as to minimize heat, dust, smoke, vibration, glare and odor and all other undesirable environmental effects beyond the boundaries of the property in which such uses are located, in accord with the following standards: 1) Volume of sound generated shall comply with the standards set forth in the Colorado Revised Statues at the time any new application is made. The existing Lundgren pit currently does not have any equipment or mechanical devices on location. Antero Resources has no intentions of adding any additional equipment to the site for operations. Trucks will utilize pumps located on the trucks to pump water to and from the pit. The sound level of noise emanating from the facility will be significantly less and will not exceed the 75 decibel maximum set forth by the Colorado Oil (% Gas Conservation Commission (COGCC) Rule 802 for Industrial. 2) Vibrations generated.: every use shall be so operated that the ground vibration is inherently and recurrently generated is not perceptible, without instruments, at any point of any boundary line of the property on which the use is located Vibrations if any at all will be associated with trucks and pumps located on the trucks. No vibrations are anticipated at the nearest adjoining property (approximately 900 feet southeast of the Lundgren Pit). 3) Emissions of smoke and particulate matter: every use shall be operated so as to comply with all Federal, State and County air quality laws, regulations, and standards. Operations of the Lundgren pit is expected to result in no emission of smoke or particulate matter. 4) Emission of heat, glare, radiation and fumes: every use shall be so operated that it does not emit, heat glare, radiation or fumes which substantially interfere with the existing use of adjoining property or which constitutes a public nuisance or hazard. Flaring of gases, aircraft warning signals, reflective painting of storage tanks, or other such operations which may be required by laws as safety or air pollution control measures shall be exempted from this provision. No emissions of heat, radiation, or fumes are expected to result from operations of the water storage pond. The pond will be contained within an earthen embankment and any glare from sunlight off the water surface is expected to reflect in an upward direction and should not be noticeable by adjacent properties which are primarily located at significantly lower elevations. 5) Storage are, salvage yard, sanitary landfill and mineral disposal areas: A) Storage of flammable or explosive solids or gases shall be in accordance with accepted standards and laws and shall comply with the National, State and Local Fire codes and written recommendations/ comments from the appropriate local protection district regarding compliance with the appropriate codes; No storage of flammable or explosive solids or gases will occur in association with the proposed special use. The Lundgren Pit will be used only for temporary storage of Frac and Flowback water that will be reused for continued completion operations associated with natural gas production. B) At the discretion of the County Commissioners, all outdoor storage facilities may be required to be enclosed by fence, landscaping or wall adequate to conceal such facilities from adjacent properties. The existing pit is located in an area that is separated from adjacent properties by numerous trees. A four strand livestock fence has been constructed around the pit to protect livestock and wildlife, and to mitigate public safety risks. C) No materials or waste shall be deposited upon a property in such form or manner that they may be transferred off the property by any reasonable foreseeable natural causes or forces; The existing pit was designed as a no discharge facility and will be operated to maintain a minimum of 2 feet of freeboard. No uncontrolled release of stored water from the pit is foreseeable. D) Storage of Heavy Equipment will only be allowed subject to (A) and (C) above and the following standards: 1) The minimum lot size is five (5) acres and is not a platted subdivision. 2) The equipment storage area is not placed any closer than 300 ft. from any existing residential dwelling. 3) All equipment storage will be enclosed in an area with screening at least eight (8) feet in height and obscured from view at the same elevation or lower. Screening my include berming, landscaping, sight obscuring fencing or a combination of any of these methods 4) Any repair and maintenance activity requiring the use of equipment that will generate noise, odors or glare beyond the property boundaries will be conducted within a building or outdoors during the hours of 8 a.m. to 6 p.m. Mon. — Fri. 5) Loading and unloading of vehicles shall be conducted on private property and may not be conducted on any public right-of-way. No heavy equipment will occur in association with the operations of the Lundgren Frac/ Flowback Water Pit. E) Any storage area for uses not associated with natural resources, shall not exceed ten (10) acres in size. The Lundgren Pit will be utilized as a temporary and emergency back up storage pit to store water associated with the production of natural gas, a natural resource. The area of the pit is approximately one (1) acre. F) Any lighting of storage areas shall be pointed downward and inward to the property center and shaded to prevent direct reflection on adjacent property. No lighting of the pit is anticipated for normal and routine operations. Portable lighting may be used if need to provide a safe work environment, during times of maximum operations. 6) Water Pollution: in a case in which potential hazards exist, it shall be necessary to install safeguards designed to comply with Regulation of the Environmental Protection Agency before operation of the facilities may begin all percolation test or ground water resource tests as may be required by Local or State Health Officers must be met before operation of the facility may begin. The water to be stored within the pit is classified as "Frac/Flowback Water." This is water that has come from operations associated with natural gas well completions and has been in contact with the well. This water is classified as and Exploration and Production (E&P) waste material and as such is subject to the regulatory authority of the Colorado Oil and Gas Conservation Commission (COGCC). The existing pit is being permitted concurrently through the Garfield County Special Use and the COGCC Centralized E&P Waste Management Facility processes. ANTERO RESOURCES PICEANCE CORPORATION LUNDGREN FRAC/ FLOWBACK WATER PIT ADJACENT LANDOWNERS 1. Bureau of Land Management Glenwood Springs Field Office 50629 Hwy 6 Glenwood Springs, CO 81602 Parcel #: 2127-153-00-955 2. ORD Financial 2304 West Shaw Ave, No. 102 Fresno, CA 93711-3410 Parcel #: 2127-301-00-220 3. Danciger, David Kendall, Trust % Weaver & Tidwill Attn: Robert Barnett 1221 Merrit Dr, Suite 1400 Dallas, TX 75251-2252 Parcel #: 2127-322-00-219 4. Danciger, David Kendall, Trust % Weaver & Tidwill Attn: Robert Barnett 1221 Merrit Dr, Suite 1400 Dallas, TX 75251-2252 Parcel #: 2127-323-00-146 5. Mulvihill Rifle Ranch LLC. 355 Madison Ave #3 Morristown, NJ 07960-6910 Parcel #: 2127-324-00-145 6. Mayland Properties, Inc. c/o The Abby 355 Madison Ave #3 Morristown, NJ 07960-6910 2127-324-00-292 7. George O. & Michelle D. Kuck 3143 County Road 233 Rifle, CO 81650 Parcel #: 2127-324-00-291 8. Troy E. & Lynetta Trevathan (J.T) 2900 County Road 233 Rifle, CO 81650-8737 Parcel #: 2127-324-00-301 9. Jeffery D & Tricia R. Wold 2899 County Road 233 Rifle, CO 81650-8716 Parcel#: 2127-321-00-060 10. Michael L. & Kaycee L. Manuppella 428 Midaland Ave. New Castle, CO 81647 Parcel #: 2127-321-00-300 11. Gregory G. & Patricia G. Gimbel 2910 County Road 233 Rifle, CO 81650-8737 Parcel #: 2127-321-00-299 12. Mayland Properties, Inc. c/o The Abby 355 Madison Ave #3 Morristown, NJ 07960-6910 Parcel #: 2127-321-00-354 13. Jeffrey S. & Lisa M. Kehr 2601 County Road 233 Rifle, CO 81650-8738 Parcel #: 2127-321-00-268 14. Gene Mulvihill (Trust for Andrew) 355 Madison Ave #3 Morristown, NJ 07960-6910 Parcel #: 2127-281-00-168 J�1-4, ,01 0 14 0�Wlc' 1 .rI gkto'. 1.' to -I4410 W. v w V vV 415 4•444,V a 343,-�, vwo 0 3 E -$ 0-toNQ 0 44 4 44'V 0 so )44 o.1 -1 to /4.77 *[i 0 t4i ,-i I 4,4 t0- " _ 0 V. m$ m to w W t'fl _ . 4. A M 1 0 iC 9J 210 -rl - Al 'O N a1.A. Gl, ai O 0 :N ..ai„LJs.DA�y'., �D r7 ,,. A. 0 V r n D $' + _ .' b #+.14-.4,� c A. n4 Z. 0 00`" in N G1 • -i4 ci fl ,0 .L' • s r.. D 'a ,._ '� � .DI Li t0 id .4-4 U d 0 IDD;"'nl4 I. O `ACL• ."'t g 8� D, .• �`t 0:10t0044 113 0. 00 10 a ye - o 41 i��0 114/is- -! c.1t3;at X-10`10 Diu. 4443X -1d ,KO m10 43 4143 _ 46_43. ill - 'is l z �' -? • -2- t 43 71 is -43 .i,:._r:_._ 'ham D sVaa:3s E'.- 10 C(13:43 m ,• n -0 10 34 44 Fs t 44 44 ' /31 . to +m- m � mTS m c JI4x 16 a6 'ia - 11 3'i D - _ 10-44 0 43.tr5 to 34 4.1 ID 10 itt,I3s1131D O 41aU U �A 3i .44 - 2-'- -- ,.ST=43;:r, ƒV 43 24»+ ±/t/ƒf22! &y$f®J»43 Tff{ W -CD ,V §�C / • •/0 f/ )\j\ ƒƒ\/£// m 0 /4-1y+«,t=f CD ) »�f 72$ +gym+ 7 g 43)44 /d Ex j :yam, -43 ID 4 iD-4.1 3U S D 44 .YA 'U :1:44 41.41 D TO 4 43 44 •...mss-` _fl--;y-`Dl .. - - ,.7?1_. - - Cpl '44 34 iu ANTERO RESOURCES PICEANCE CORPORATION LUNDGREN FRAC/ FLOWBACK WATER PIT LEGAL DESCRIPTION Township 5 South, Range 92 West of the 6th P.M. Section 32: NW/4SE/4 Garfield County, Colorado ANTERO RESOURCES EMERGENCY RESPONSE PLAN TABLE OF CONTENTS 1.0 PURPOSE 2.0 INTRODUCTION 3.0 POTENTIAL HAZARDS 4.0 EMERGENCY RESPONSE ACTIONS 5.0 INCIDENT NOTIFICATION PROCEDURES 6.0 COMMUNICATION 7.0 CONTACT NUMBERS 8.0 ACCIDENT/INCIDENT REPORTING PROCEDURES 1.0 PURPOSE Antero Resources Corporation (Antero) is committed to taking all practical steps to safeguard personnel, the public, and the environment from incidents related to its operations. Emergency preparedness is an essential part of this commitment. The purpose of this document is to identify the resources and procedures Antero has established to respond to expected emergencies. It is recognized that support from outside agencies (such as police, fire service, and emergency medical response) will be essential for certain emergencies. This document is intended to provide Antero employees, contractors, and these outside agencies with the background and contact information necessary to facilitate a response to an emergency relating to Antero's facilities and/or operations. The Antero "Emergency Response Plan" will be reviewed on an annual basis and will be revised and updated to reflect significant changes in operations. In addition to Company personnel, copies of this plan will be distributed to appropriate personnel with external response organizations. Questions or comments regarding this plan should be referred to: Terrell A. Dobkins, Vice -President Production 1625 17th Street, Suite 300 Denver, Colorado 80202 Office Telephone: 303.357.7318 Cellular Telephone: 303.808.6222 2.0 INTRODUCTION Antero focuses its resources on lease acquisition activities, well drilling, well completion, and gas production. These activities include: - identification of mineral interest owner(s) and negotiation for and acquisition of an oil and gas lease; - initial surveying and staking of location; -well site construction; - well drilling; - well completion (preparing the well to produce); - construction of facilities (flow -lines, gas/condensate/water separation facilities, condensate tanks, water tanks, gas and condensate measurement facilities, and gas sales lines); - reclamation of disturbed acreage not needed for gas production or re -working operations; - gas and condensate production operations including gas sales and waste disposal; -well abandonment and well site reclamation. Fluid production from the well is flowed to a "separator" which separates the gas from the condensate and water. Water is considered a waste product and, following separation, is piped to an above ground tank where it is contained until trucked to an approved, off site disposal facility. The natural gas is separated from the water and flows through gas measurement facilities prior to delivery to a compressor station for compression and shipment off the lease via an underground pipeline. Antero utilizes third party companies to gather, compress, and transport the gas from its wells. The condensate is separated from the gas and water and is stored in tanks awaiting pick up for sales. The condensate vapors are contained in a closed system to reduce vapor emissions. 3.0 POTENTIAL HAZARDS Construction Construction activities involve the use of heavy equipment and include trenching/excavation activities. In addition to the potential workplace hazards associated with working in/around heavy equipment, potential hazards include inadvertent damage to existing buried service lines. Construction operations are conducted on behalf of Antero by specialized contractors. To minimize the risks associated with construction operations, each contractor has established programs, procedures and equipment for personnel safety. In addition, to minimize the likelihood of problems during trenching and excavation, these operations are conducted in accordance with applicable regulatory requirements and include use of the 'one -call" notification system to ensure that existing service lines are identified and marked before excavation operations are commenced. To facilitate outside agency response in the event of an emergency, personnel (including Antero contractors) are provided with telephone contact numbers for the sheriff, police, highway patrol, fire service, and poison control. In all cases, 911 is the first call to be made to notify local services of the emergency situation. Measures to recognize and prevent the above described hazards include training, installation of equipment to prevent trench cave-in, and implementation of safe construction work practices and techniques. Drilling, Re -Working & Well Service Operations During drilling, re -working or well service operations, potential hazards include fires, explosions, or gas releases either due to a well control problem or gas migration via the well -bore to the surface. Other potential hazards include workplace safety hazards associated with working in/around drilling equipment and pressurized lines. Drilling operations are conducted on behalf of Antero by specialized contractors. To minimize the risks associated with drilling re -working and well service operations, each contractor has established programs, procedures and equipment for personnel safety. In addition, to minimize the likelihood of well control problems, operations are conducted in accordance with applicable regulatory rules and requirements of the Colorado Oil and Gas Conservation Commission. To facilitate outside agency response in the event of an emergency, personnel (including Antero contractors) are provided with telephone contact numbers for the Colorado Oil and Gas Conservation Commission, sheriff, police, highway patrol, fire service, and poison control. In all cases, 911 is the first call to be made to notify local services of the emergency situation. Production The most significant hazard associated with Antero's production operations is a gas leak. If the leaking gas flows into the air, it most likely will dissipate quickly and pose little to no danger. However, if the gas is confined in the presence of an ignition source, it can flash ignite and result in a fire. In addition, gas can displace oxygen which may lead to a localized oxygen deficient environment and result in asphyxiation to exposed individuals. Antero wells are monitored by personnel on a regular basis. Antero personnel responsible for monitoring well operations are provided with cellular communications and are trained to detect potentially hazardous situations associated with the production of natural gas. In addition, for those Antero wells located near public facilities the wells are provided with a locked fence to prevent unauthorized access. To facilitate outside agency response in the event of an emergency, personnel (including Antero contractors) are provided with telephone contact numbers for the Colorado Oil and Gas Conservation Commission, sheriff, police, highway patrol, fire service, and poison control. In all cases, 911 is the first call to be made to notify local services of the emergency situation. Each Antero -operated well is marked with a sign which indicates the company name, well number, lease name, legal description of the location of the well, and county. In addition, the sign includes a telephone phone number which can be utilized to contact Antero in the event of an emergency. Antero's Field Office Activities conducted in Antero's field office do not present any significant potential hazards. Events which may result in emergency response situations include fire and tornado. Preventive measures include safety procedures, the provision of fire extinguishers and training. To facilitate outside agency response in the event of an emergency, telephone contact numbers for the sheriff, police, highway patrol, fire service, and poison control are posted at the drilling site and in Antero's office. 4.0 EMERGENCY RESPONSE ACTIONS FIRE/EXPLOSION EMERGENCY FLOWCHART MINOR (Fire/explosion immediately extinguished) REPORT INCIDENT (Refer to Antero Resources Accident/Incident Reporting Procedures) SIGNIFICANT (Fire/explosion not immediately extinguished) TAKE ACTIONS TO PROTECT YOURSELF AND OTHERS 1 EVACUATE PERSONNEL TO SAFE AREA/SECURE FIRE SITE 1 INITIATE NCIDENT NOTIFICATION PROCEDURES CALL 911 CALL ANTERO SUPERINTENDENT EVALUATE SITUATION IS IT S FE FOR ONSITE P RSONNEL No REMAIN IN SAFE TO INITIATE ACTIONS —'LOCATION/MAINTAIN TO CONTROL INCIDENT? SECURITY OF AREA/ AWAIT EXTERNAL Yes RESPONSE IS FIRE BEING FED BY FUEL SOURCE? IS THE FIRE BEYOND No INCIPIENT STAGE? Yes CAN FUEL SOURCE BE SAFELY ISOLATED? Fire is within Fire is beyond employee No Yes employee ability/training 1 » ability/training to extinguish to extinguish EXT! GUISH FIRE 1 Yes FUEL SOURCE ISOLATED - FIRE EX—INGUISHED? LET FIRE BURN LET FIRE No BU CONTROLLED GAS RELEASE SUCH AS WELL TESTING Notify Dispatch at Rifle Fire Protection District and Silt Fire Protection District prior to gas flaring and testing GAS RELEASE EMERGENCY FLOWCHART MINOR (Gas release stopped) • ASSESS SEVERITY SIGNIFICANT (Gas release not stopped ) REPORT INCIDENT TAKE ACTIONS TO PROTECT (Refer to Antero Resources YOURSELF AND OTHERS Accident/Incident Reporting Procedures) EVACUATE PERSONNEL TO SAFE AREA/SECURE LEAK SITE/ ELIMINATE POTENTIAL IGNITION SOURCES INITIATE NCIDENT NOTIFICATION PROCEDURES CAL 911. CALL ANTERO S PERINTENDFNT EVALUATE SITUATION IS IT SAFE FOR ONSITE PERSONNEL No REMAIN IN SAFE TO INITIATE ACTIONS --►LOCATION/MAINTAIN 1 TO CONTROL INCIDENT? SECURITY OF AREA/ AWAIT EXTERNAL RESPONSE Yes CAN FUEL SOURCE BE No SAFELY ISOLATED? INJURY EMERGENCY FLOWCHART MINOR 1 (First aid only) REPORT INCIDENT (Refer to Antero Resources Accident/Incident Reporting Procedures) • ASSESS SEVERITY SIGNIFICANT (Medical treatment required ) ADMINISTER FIRST AID 1 EVALUATE SITUATION 1 DOES THE INJURED PERSON REQUIRE IMMEDIATE HOSPITAL EMERGENCY MEDICAL TREAIMENT Yes No TRANSPORT INJURED TO MEDICAL FACILITY CALL 911 - REQUEST EMERGENCY MEDICAL ASSISTANCE 1 4 INITIATE NCIDENT NOTIFICATION PROCEDURES In addition to the above described procedures, the person at scene will establish the following based on the site conditions: • Safe distances and places of refuge, • Site security and control, and • Evacuation routes and procedures. Emergency medical treatment will be provided by outside medical response agencies. First aid will be provided by Antero or contractor employees trained and equipped to render such service. Personal protective equipment and emergency equipment such as fire extinguishers are provided to all appropriate field personnel and will be accessible for immediate use. Following an emergency incident a formal critique of the response will be conducted to include recommendations and follow up actions. 5.0 INCIDENT NOTIFICATION PROCEDURES 1. Person at scene — Call: Antero Resources Corporation Operations Superintendent STEVE FONTENOT (970) 274-6454 and the appropriate Antero contact in 7.0 below or the appropriate emergency response organization based on incident circumstances • identify yourself • state the nature of the incident • give your exact location • describe the extent of the incident • state the extent of any injuries or casualties • advise of assistance required • provide your call back number 2. If incident involves contractor employee, Incident Commander* to contact the affected contractor and advise them of the situation 3. If incident requires additional Antero response actions, Incident Commander shall mobilize additional resources, coordinate the response and notify Denver Management**. *Incident Commander is either the Antero Operations Superintendent, Well -site Supervisor, Construction Supervisor, or their designee. **Denver Management is Terrell A. Dobkins, or his designee. 6.0 COMMUNICATIONS Communications during an emergency incident will be accomplished using portable cellular telephones, land line telephones and/or two-way radio, if available. Other forms of communication may include e-mail, for example, to record communications to agencies or corporate personnel. For areas where cell phone coverage is not available, emergency personnel will locate and travel to nearest cell service area. 7.0 CONTACT NUMBERS State of Colorado Emergency Non -Emergency (303) 894-2100 (877) 518-5608 (800) 886-7689 Colorado O&G Conservation Commission Department of Public Health and Environment , CEPC UNCC (Line Locates) PUC (Colorado Utilities) Toll Free Transmission ROW Services Highway Patrol Poison Control 911 (800) 222-1222 Town of Silt — Garfield County Fire Department, Silt 911 Dispatch Rifle Fire Protection District 911 Dispatch 911 Grand Valley Fire Protection District 911 Ambulance 911 Silt 911 Parachute 911 Sheriff (Garfield County) 911 Police — Silt (Office) 911 Rifle (Dispatch) 911 Hospital (level 4 trauma center) 911 Water Department Emergency Management Cellular Jim Sears (800) 922-1987 (303) 894-2000 (800) 888-0170 (303) 894-2908 (303) 239-4501 (970) 876-5738 (970) 625-1899 (970) 625-1243 (970) 625-8095 (970) 285-7711 (970) 876-0510 (970) 285-7711 (970) 945-0453 (970) 876-2735 (970) 625-8095 (970) 625-1510 (970) 625-6221 (970) 945-0453 (970) 379-4202 Antero Resources 24-hour emergency number Rifle Office Glenwood Springs Office 970-274-6454 Telephone: (970) 625-9922 Fax: (970) 625-9929 792 Buckhorn Drive Rifle, CO 81650 Telephone: (970)928-7350 or (866) 928-7350 Fax: (970)928-7354 Physical: 802 Grand Ave, Ste 304 Glenwood Springs, CO 81601 Mailing: PO Box 1214 81602 Antero Resources Operation Superintendents Contact Telephone Numbers Name Position Office Home Mobile Steve Fontenot Operations Super. 970-625-9922 970-625-5442 970-274-6454 John Kawcak Operations Super. 817-820-0035 817-368-1553 Denver Office 1625 — 17th Street Suite 300 Denver, CO. 80202 Telephone: (303) 357-7310 Fax: (303) 357-7315 Antero Resources Corporation Contact Telephone Numbers Name Position Office Home Mobile Terry Dobkins VP — Production (303) 357-7318 (303) 808-6222 Robert Mueller VP - Geology (303) 357-7317 (720) 273-7436 Brian Kuhn VP — Land (303) 357-7316 (303) 520-5551 Steve Woodward VP — Bus. Devel. (303) 357-7312 (303) 956-7289 PRIMARY RESPONSE CONTRACTORS Cudd Energy Services 303-571-1734 307-382-6650 Kip Costanzo 970-379-2777 Kip Costanzo 970-379-2777 Emergency Well Control Well Control Engineer Guy Shafer, Denver Jim Price, Rock Springs, WY Waste Disposal 24-hour Emergency Number Roustabout Crews/Dirt Work 24-hour Emergency Number 8.0 ACCIDENT/INCIDENT REPORTING PROCEDURES ALL ACCIDENTS ARE TO BE REPORTED. Antero and Contractor employees shall immediately report any accident, injury, or illness to his or her immediate Supervisor or designee. ■ The Antero Supervisor shall ensure that work-related injuries/illnesses involving Antero employees and Contractor personnel are formally reported, recorded, and investigated. • For compensable work-related injuries/illnesses involving Antero employees, ensure that any required reports are filed with the appropriate State agency within 10 days. • The driver of any Antero -owned or leased vehicle involved in an accident shall immediately report the incident to their Supervisor. The Supervisor shall ensure the vehicle accident is formally reported, recorded and investigated. • If the accident occurs on a public road or highway, the driver shall also report the incident to the appropriate authorities, such as the highway patrol or local police. The Antero Operations Superintendent shall ensure that accidents which result in significant property damage, a fire, and/or potentially serious incident are formally reported, recorded and investigated. ■ Where appropriate, Antero Management will direct that an additional formal investigation of an accident or incident be conducted. Local Management is responsible for responding to emergencies that impact their facilities and operations. If the emergency is a major emergency, or if the emergency has the potential of developing into a MAJOR EMERGENCY, LOCAL MANAGEMENT MUST NOTIFY DENVER MANAGEMENT IMMEDIATELY AFTER ACTIVATING THE LOCAL RESPONSE PLAN. Antero Resources Lundgren Frac Pit Re -vegetation Plan Garfield County, CO Photo 1. Antero Lundgren Frac Pit. December 12, 2006. December, 2006 Prepared by: WestWater Engineering 2516 Foresight Circle #1 Grand Junction, CO 81505 970-241-7076 In Coordination with: Wagon Wheel Consulting Rifle, CO WestWater Engineering Antero Lundgren Frac Pit Re-veg. Plan Page 1 of 6 I Antero Resources Lundgren Frac Pit Re -vegetation Plan December 2006 Introduction This plan is for compliance with Garfield County Zoning Regulation 9.07.04 (12) (Board of County Commissioners, 2006). On December 12, 2006, a field inspection of the site was conducted by WestWater Engineering (WWE) biologists at the request of Wagon Wheel Consulting on behalf of Antero Resources. The inspection identified appropriate topics for inclusion in a re -vegetation plan. Factors considered include soil type and texture, existing land management, absence or presence of listed noxious weeds and likely potential natural vegetation community. Conditions were poor to conduct the inspection with approximately 2 inches of compacted snow (Photo 1, page 1) covering most of the site and surrounding terrain. Some disturbed areas had ice under snow. Most native grasses present were senescent and could not be identified with certainty except to genus, e.g. Hesperostipa, Sporobolus, and Elymus (NRCS, 2006a). Snow cover precluded a thorough survey for rosettes of weeds potentially troublesome to re -vegetation success. Landscape Setting The site is located on a high, gently sloping terrace above and east of Rifle Creek near the edge of large, irrigated hay meadows. The northwest corner of the existing pit is located at point NWCOR on Figure 1. The terrace drops sharply in a near vertical manner to Cactus Valley a few meters east of the existing pit. Russian knapweed (Acroptilon repens) and salt cedar (Tamarix ramosissima) were found within 100 meters of the perimeter. The knapweed is in adjacent disturbed soils and the salt cedar is on the bank of an otherwise well vegetated ditch. Photo 2. Russian knapweed. Photo 3. Salt cedar. WestWater Engineering Antero Lundgren Frac Pit Re-veg. Plan Page 2 of 6 According to the US Dept. of Agriculture, soil is Potts rolling loam composed of 7 to 27 percent clay, 28 to 50 percent silt, and less than 52 percent sand (NRCS, 2006b). From a texture test conducted on site, soil on site is more clay and silt and less sand, i.e. at least 27 percent clay, 50 percent silt with little to no noticeable sand. Natural vegetation observed in undisturbed soils around the site was sparse. Evidence of grazing by horses was plentiful including the presence of two horses at the time of inspection. No evidence or recent cattle grazing was observed. A perimeter fence precludes grazing of cattle or horses immediately on the banks of the pond. Native species present and observed immediately outside the existing perimeter fence includes basin big sagebrush (Artemesia tridentata tridentata), rabbitbrush (Chrysothamnus spp.), and winterfat (Krascheninnikovia lanata). Characteristic species expected and their percent composition is shown in Table 1 (NRCS, 2006b). Examination of undisturbed land adjacent to the pit on December 12 confirmed the presence of a native vegetation plant community stressed by grazing, and invasion of regulated and unregulated invasive, weedy species. Table 1. Characteristic vegetation and composition Potts rolling loam. Common Name Scientific Name Percent Comp. western wheatgrass Pascopyrum smithii 25 needle and thread Hesperostipa conrata comata 15 basin big sagebrush Artemesia tridentata tridentata 10 bluebunch wheatgrass Pseudoroegneria spicatum spicatum 10 indian ricegrass Achnatherum hymenoides 10 bottlebrush squirreltail Elynrus elymoides 5 yellow rabbitbrush Chrysothanmus viscidiforus 5 Recommended Seed Mix The following seed mix (Table 2) contains only grasses. The reason for not including shrubs and forbs is the presence of russian knapweed and the likelihood herbicides will be needed to control the existing infestation and suppress and eliminate new infestations. Species included have been shown to perform well after treatment of russian knapweed with herbicides in Nevada (Graham and Johnson, 2005). Only native species are included with several sod -forming perennial grasses, which help prevent reinvasion more effectively than bunch grasses (Beck, 2006). WestWater Engineering Antero Lundgren Frac Pit Re-veg. Plan Page 3 of 6 Table 2. Recommended Seed Mix and rate for drill or hydro -seed for Antero Lundgren Frac Pit. Scientific Name/Seeds per Pound Common Name/Preferred Cultivar No. PLS/Ft2 % of Mix by PLS Wt. Application Rate Lbs PLS/acre Achnatherum hymenoides 140,000 Indian ricegrass/ Paloma* 4 11 1.25 lfesperostipa comma comata 115,000 Needleandthread 4 14 1.5 Pascopyrum smithii 140,000 western wheatgrass/ Arriba* 8 23 2,5 Pseudoroegneria spicata spicata 140,000 bluebunch wheatgrass/ P7 4 11 1.25 Elymus lancolatus lanceolus 154,000 thickspike wheatgrass 8 21 2.3 Elymus lanceolatus psammophilus 156, 000 streambank wheatgrass 8 20 2.25 Total 36 PLS/FT2 100 11.05 Lbs. PLS/AC *WWE recommends accepting no other cultivar for this site. (NRCS, 2006a), Colorado Natural Heritage Program, 1998. Seeding rate should be doubled for broadcast application. Preferred seeding method for this site is hydro -seeding. Harrowing, followed by seed application, then re -harrowing is another good method where slope allows. Next best method is broadcast seeding followed by mulching with clean, certified weed -free straw. Mulch should be crimped into the soil where possible. Photo 4. Steep pit berm at northwest corner. Photo 5. Livestock observed during inspection. Drilling seed is possible on top of pit berm but, presumably, that surface will be maintained vegetation -free when the pit is active. The basis of these recommendations is the berms are too steep for machinery to drill. However, it is not to steep to crimp mulch or imprint the soil with dozer tracks or other imprinting implements which leave cross -slope imprinting or furrowing. WestWater Engineering Antero Lundgren Frac Pit Re-veg. Plan Page 4 of 6 Timing Planting should occur in spring as soon as soil conditions permit. Hydro -seeding or broadcast seeding with blown mulch could be done earlier in spring while drilling, harrowing, and imprinting would require drier soil conditions, which are generally present in late spring. Alternative Methods The application of arbuscular mycorrhizal fungi (AMF) has been found to be helpful in re - vegetation. These fungi, mostly of the genus Glomus are symbiotic with about 80% of all vegetation. In symbiosis, the fungi may significantly increase water and nutrient transfer capacity of the host root system (Barrow and McCaslin, 1995). Over-the-counter commercial products, which are better adapted to coating seeds when reseeding and treating roots of live seedling trees and shrubs at time of planting come in powder form and are available from many different sources including Granite Seed, Pawnee Buttes Seed and other vendors. Some applicators, including a New Castle company, collect and grow local accessions of AMF. The latter are applied to weed patches and are reputed to greatly increase competition of native plants with noxious weeds. References Barrow, J.R., and Bobby D. McCaslin, 1995. Role of microbes in resource management in arid ecosystems. In: Barrrow, J.R., E.D. McArthur, R.E. Sosebee, and Tausch, Robin J., comps. 1996. Proceedings: shrubland ecosystem dynamics in a changing environment. Gen. Tech. Rep. INT -GTR -338. Ogden, UT: USDA, For. Serv., Intermountain Res. Sta., 275 pp. Board of County Commisssioners, 2006. Garfield County zoning resolution of 1978, amended October, 2006. Building and Planning Department, Glenwood Springs, CO, 78 pp. Beck, K.G. 2006. Russian knapweed. Colo. St. Univ., COOP. Ext. Service. New Media. http://www.ext.colostate.edu/pubs/natres/03111.html. Colorado Natural Areas Program. 1998. Native Plant Re -vegetation Guide for Colorado. Caring for the Land Series, Vol. III, State of Colo., Div. Parks and Outdoor Rec., Dept. Nat. Res., Denver, 258 pp. Graham, Jessica and Wayne S. Johnson, 2005. Managing Russian knapweed. Fact Sheet 04-07. Univ. NV. Coop. Ext. Service, Reno. 4 pp. Natural Resource Conservation Service (NRCS), 2006a. Web Soil Survey, US Dept. of Agriculture. URL: http://websoilsurvey.nrcs.usda.gov NRCS, 2006b. The PLANTS Database (http://plants.usda.gov, 7 September 2006). National Plant Data Center, US Department of Agriculture, Baton Rouge, LA 70874-4490 USA. State of Colorado, 2005. Rules pertaining to the administration and enforcement of the Colorado Noxious Weed Act, 35-5-1-119, C.R.S. 2003. Department of Agriculture, Plant Industry Division, Denver, 78 pp. WestWater Engineering Antero Lundgren Frac Pit Re-veg. Plan Page 5 of 6 Antero Lundgren Frac Pit, 12/14/06, 264450mE 4382993mN Zone 13S WGS84 262000mE. 263000mE. 264coo.E. 265000mE, WG584 Zone 13S 267000mE, e r \ end ' ••i' '`Y���lR L -•fir,: ); , EJ `` r_� may=':' o `", it. uv ;°.) • o� m 5 r, ,.... Rifle Cm* Community: ub i ;, 5����_: (i.40 4 f v. �- - l•/• •���.,-••/ 29_ •' • J . �� �� I .. � . + • .fie' ♦� ,. r fes., .� , .... n. Jii• - li , *t, . h' i •• 111 tC\ 17.4:. r 4 r.. 1. Y..'id'-.4 . • . 2 W M Gey cwr 1 / i' SOU r. L'.. y -ii*„ Z -X. cam, `Y� Q.. Q r0✓k G .. vRcS.t.Y • • � d V A I �• . )i ,1.1'� t F t j i: :,. \ > i:1 / .. 1 , -'aur 68ADO . v0° .�,�' 'E*nailer, kms' et y ` F u.,. \ +,. •l -- \ ��1.�I//-.:�.��i , 9x iAla #'4�/�!~ \ 1 ( kl s/ 262000mE, 263000mE, 2641:100mE, 26SO60nE, WGS84 Zone 13S=67O00mE, N L 5 tM ITN IE �11l1° LaynrcanJ0001Etr 9 ., —. P)t' (a3 — Map untied with 70P01062003 National Geographic (mow .neiiomlgeop phir.romrtoj ) rigure 1. Antero Lundgren Frac Pit. Northwest corner of pit is at point NWCOR in Section 32. TARA indicates locations of observed tamarisk. WestWater Engineering Antero Lundgren Frac Pit Re-veg. Plan Page 6 of 6 ANTERO RESOURCES PICEANCE CORPORATION LUNDGREN FRAC/ FLOWBACK WATER PIT LANDSCAPING AND RECLAMATION PLAN Antero Resources Piceance Corporation and is currently in the process of preparing a landscaping and reclamation plan for the Lundgren Frac/ Flowback Pit. Due to weather conditions this plan is taking longer than expected to be completed. Antero and Wagon Wheel Consulting, Inc. insures that this plan will be completed and submitted prior to final review of the Special Use Permit application and before any public hearings. The plan is expected to be completed by Dec. 18, 2006 with weather permitting site surveys. STORM WATER MANAGEMENT PLAN ANTERO RESOURCES CORP LUNDGREN PROJECT—LUNDGREN & JEWELL, MULVIHILL LEASE PROPERTIES Garfield County, Colorado Prepared for: Antero Resources Corporation September 2005 TABLE OF CONTENTS 1.0 INTRODUCTION 1 2.0 SITE DESCRIPTION 1 2.1 Site Characteristics 1 2.2 Construction Sequence 2 Clearing and Grading 2 Backfilling 3 Wetlands and Waterbodies 3 General Best Management Practices 4 Restoration of Topography 4 Revegetation 5 3.0 CONTROLS 5 3.1 Erosion and Sediment Controls 6 Stabilization Practices 7 Structural Practices 8 3.2 Storm Water Management 9 3.3 Other Controls 9 4.0 MAINTENANCE 11 5.0 INSPECTIONS 11 6.0 TRAINING 11 CERTIFICATION STATEMENT 13 CONTRACTOR CERTIFICATION STATEMENT 14 EXHIBIT A MAPS 15 EXHIBIT B WETLAND AND WATERBODY CROSSING MITIGATION MEASURES16 STORM WATER MANAGEMENT PLAN ANTERO RESOURCES PICEANCE BASIN PROJECT 1.0 INTRODUCTION This Storm Water Management Plan (SWMP) is prepared to identify Best Management Practices (BMPs) that will be implemented to meet the terms and conditions of the Water Quality Control Division, Colorado Department of Public Health and Environment (CDPHE), General Permit COR -030000 for storm water discharges associated with construction activities, authorized under the National Pollutant Discharge Elimination System (NPDES) as required by the U.S. Environmental Protection Agency (EPA). It is prepared in accordance with appropriate engineering, hydrologic, and pollution control practices, and is designed to constitute compliance with Best Available Technology and Best Conventional Technology, as mandated under the Federal Clean Water Act and the Federal Water Pollution Control Act. 2.0 SITE DESCRIPTION 2.1 Site Characteristics Antero Resources Corporation (Antero) proposes to develop a conventional gas field east of Rifle, Garfield County, Colorado. The project is referred to as the Antero Resources Lundgren Project and will involve construction of a test drill pad (which would accommodate multiple wells), an access road, and associated facilities. The well pad will require approximately 1.38 acres in surface disturbance. The total project surface disturbance associated with the Lundgren Project will be approximately 3.94 acres including the well pad and the access road. If the project is successful, a SWMP will be generated to cover pipeline activities. Construction activities associated the well pad and future pipeline would be minor and temporary. Further development of the project area may involve a compressor station, associated gathering and transmission pipeline, and access roads. Approximate surface disturbance associated with the additional project activities has not been determined but would follow existing access roads and right-of-way corridors where possible. The runoff coefficient is expected to vary between 0.25 and 0.35 and is not expected to change significantly following construction. The local soils consist of Ildefonso-Lazear soil complexes. Ildefonso soils make up about 50% of the unit and are deep and well drained. The surface layer consists of stony loam overlying a white, very calcareous stony loam to a depth of 60 inches. The Lazear soil contributes about 30% to the complex and consists of a thin, well drained soil over shale bedrock. These soils typically 191-03 Storm Water Management Plan 1 Storm Water Management Plan - Antero Resources Piceance Basin contain a grayish brown gravelly loam overlying a light brown gray cobbly loam to a depth of about 16 inches. These soil complexes form on slopes ranging form 6 to 65 %. The proposed disturbed areas will not cross any defined wetlands. Site inspections were conducted on September 15, 16, and 20, 2005 and identified active and inactive irrigation and drainage ditches at the pad locations or in association with the access roads. The proposed project area lies entirely outside of the Colorado River floodplain. A topographic map showing the proposed well pad and access road, and any surface water are included in Exhibit A. Construction activities associated with the test well is anticipated to commence in October 2005. 2.2 Construction Sequence The general construction sequence of the project is as follows: Clearing and Grading The project area has been surveyed and staked. Clearing of the project area will be limited to the smallest area possible to provide safe and efficient work areas for all phases of construction. Clearing of the project area will be accomplished by mowing and/or grading as necessary. Where possible, trees will be avoided or trimmed. Grading may be required at some access roads and at all drill pads in upland areas and in areas of irregular topography. This will be done to create a level workspace and to provide adequate access and safe working conditions for workers and for equipment and vehicle operation. Typically, dozers or maintainers are used to perform grading operations. Topsoil will be segregated on agricultural land or as required by the landowner. Generally, in areas of relatively level terrain, topsoil will be removed to a maximum depth of 12 inches and stockpiled in a windrow. In areas of irregular topography, topsoil will be stripped the width of the disturbed area and stockpiled similarly. Topsoil salvage will not be necessary in areas where poor soils are developed (indicated by barren soils), at rock outcrops, or on steep slopes that may pose potential safety hazards to equipment operators and other workers. Spoils (subsoil) from grading operations will be stockpiled adjacent to the segregated topsoil, where possible. In some cases, additional storage space may be necessary for excessive amounts of spoils. In areas of excessively steep slopes, grading will be minimized by detouring non- essential equipment around these areas using a temporary access road or bypass. Two -toning may also be implemented to minimize grading for steep cuts. Two -toning involves grading two small cuts where the working side is higher than the spoil side. Downslope perimeter erosion and sediment control measures will be installed prior to commencement of grading operations. Gravel/stone ramps will be installed at access points to public roadways, as needed, to prevent or minimize the tracking of mud, dirt, sediment, or 191-03 Storm Water Management Plan 2 Storm Water Management Plan - Antero Resources Piceance Basin similar materials onto the roadway. Deposits that have been tracked by vehicles or have been transported off the project area by wind or storm water will be promptly cleaned up. Airborne dust resulting from construction activities will be minimized by spraying the project area with fresh water, as needed. All underground pipelines and utility lines crossed by the proposed pipeline and new access roads will be identified and clearly flagged or marked. Prior to commencing ditching operations in these areas, utility and pipeline owners will be notified of the impending construction and will be requested to locate and uncover their own lines or to be present during construction activities. The exact location of these utilities will be determined by hand excavation. Appropriate sediment and erosion control measures will be implemented to minimize erosion and sediment transport. Backfilling Backfilling procedures will incorporate techniques to protect and salvage valuable topsoil, and to prevent erosion of backfill material. Wetlands and Waterbodies It should be noted that there are no wetlands present in or adjacent to the Lundgren project area. In general though, wetlands and water bodies will be avoided, where practicable. Wetlands that cannot be avoided will be constructed using BMPs, including the use of relocating the wells or use of hay bale and silt fence structures. Antero or its contractor may also consider open cutting these crossings so long as they implement the below mitigation measures. Route the well pads, access roads, and gathering pipeline to avoid wetland areas to the maximum extent possible. If a wetland or waterbody cannot be avoided, route the new facilities in a manner that minimizes disturbance to wetlands or waterbody and follow the general wetland mitigation and crossing procedures outline in Exhibit B. General Wetland and Waterbody mitigation measures and best management practices include: General Wetland and Waterbody Mitigation 1. Reduce width or disturbance as much as possible for the crossing. 2. Where possible, plan crossing under the "One -Pass" procedure where each piece of necessary equipment makes only one crossing through the wetland. Work should be planned so as to minimize work time in the wetland. 3. Cut vegetation, leaving root structure in place over only the area required to safely install pipe. 4. Prepare pipe segment on upland ground prior to trenching. 191-03 Storm Water Management Plan 3 Storni Water Management Plan - Antero Resources Piceance Basin 5. Use double ditching technique. That is, reserve the top 6 to 12 inches of topsoil with roots from the trenchline. Complete trenching operation keeping topsoil segregated from subsoil. 6. Pull pipe segment(s) into place and make tie-ins. 7. Install trench plugs at least on each end of the wetland trench to prevent drainage. 8. Backfill the trench with subsoil followed by reserved topsoil. 9. Re -contour as necessary. 10. Reseed, if required. General Best Management Practices 1. Construction crews are informed of wetland procedures and boundaries. 2. No refueling of equipment in wetlands or within 100 feet of the wetland boundary. 3. Equipment is checked for cleanliness and Leaks prior to entering service in a wetland. 4. Sorbent materials and cleanup kits are to be available at each wetland crossing. 5. Any spills or leaks are immediately contained and cleaned up. Restoration of Topography Following the completion of backfilling, all graded areas will be restored to as near the natural grade as feasible. However, in areas of unstable slopes, steep cuts may be restored to a stable position and protected by appropriate erosion control measures. These locations may not be known until on-site inspections are made during construction. Some excess spoils will remain after backfilling and regrading is completed. Small amounts of excess spoils may be spread evenly across the graded areas of the project area. Otherwise, excess spoils will be removed from the project area and disposed in an area acceptable to the landowner and in accordance with applicable laws, rules, and regulations. Permanent interceptor channels (waterbars) or diversion terraces will be constructed to stabilize upstream or up slope areas and to divert surface waters away from the backfilled area and into natural drainages. This will prevent channeling on hillsides or sloping ground. Once recontouring has been completed, subsoil compaction of work areas will be relieved by ripping, disking, or chisel plowing, unless otherwise directed by the landowner. This procedure will be completed prior to replacement of topsoil across the disturbed surface. In some locations, thin topsoils overlay rocky subsoils. Where this occurs, this procedure will not be performed. Prior to topsoil replacement, excess rock on the surface will be removed and disposed of at an approved location or as directed by the landowner. Topsoil will only be replaced across the graded areas of the construction area. If necessary, topsoil compaction may be alleviated by disking or by using a similar implement. Disking or other means of tilling should parallel the contours of slopes. Topsoil will be Left in a roughened condition to minimize the erosive effects of water and wind. 191-03 Storm Water Management Plan 4 Storm Water Management Plan - Antero Resources Piceance Basin Agricultural lands (cropland and hay meadows), if encountered, will be restored to as near pre - construction conditions as feasible, which will allow a return to previous land use. As negotiated, individual landowners will be compensated for crop losses resulting from construction activities. Revegetation The principal objective of revegetation is to provide sediment and erosion control by establishing a permanent vegetative cover over disturbed areas. Re-establishment of vegetation will also reduce the visual impacts of the pipeline corridor. A vegetative cover that is composed of compatible native species similar in composition to pre -construction conditions will be re- established on non-agricultural lands. Seed mixtures will include species present prior to construction activities. Mixtures will also include some species that will establish quickly to provide soil stabilization. A seed mixture recommended by the landowner or local office of the Natural Resource Conservation Service (NRCS) will be applied to restoration areas. Special requests from landowners for specific seed mixtures will be evaluated on a case-by-case basis. Seed will be obtained within the general geographical area of the project, based on availability. Fertilizers may be applied at the request of landowners. Seed planting will begin promptly following completion of reclamation activities. However, planting may be delayed because of variations in seasonal climatic conditions, delays in construction scheduling, or construction shutdowns. It is anticipated that planting will occur during the summer/fall season, as long as seasonal conditions allow. Should spring seeding be required, planting will occur as early in the season as soil conditions and weather variations will permit. Where needed, seed will be applied by the appropriate methods for soil and topographic conditions encountered. Employment of mulching aids, tackifying agents, and other erosion control materials will aid in soil moisture retention and minimize topsoil erosion by wind and water. Mulching or tackifying may be employed in areas of extreme exposure to wind, unstable slopes, or highly erodible soils. Certified noxious weed -free straw will be used as mulch, or as directed by landowner. Mulch will be anchored to the ground using a crimper or disk. In some cases, an erosion control blanket may be used on unstable slopes. In general, most disturbed areas on the project area will be reclaimed in one to two years following reseeding. Other surface disturbances that remain after reclamation and reseeding should generally be limited to areas associated with surface facilities. 3.0 CONTROLS The potential for erosion and sediment transport is greatest in areas where ground surfaces have been disturbed and soil is exposed to physical agents such as wind and water. In an effort to 191-03 Storm Water Management Plan 5 Storni Water Management Plan - Antero Resources Piceance Basin protect existing water quality, both temporary and permanent BMPs and other erosion control measures have been designed to minimize the affects erosion due to storm water runoff. In most cases, a combination of vegetative, structural and storm water management practices are used to control erosion and sediment transport. Temporary measures to control sedimentation and erosion will be used and maintained during all phases of construction. When possible, sediment retention controls will be installed prior to the initiation of clearing and grading activities, and erosion controls will be implemented concurrent with the initiation of construction activities. Selection of appropriate erosion control materials will be based on soil properties, steepness of the slope, anticipated surface flow, or runoff. In general, straw bale barriers, silt fences, and interceptor channels (waterbars) will be appropriate control measures to be used for sediment and erosion control during construction. As conditions require, other control measures such as sediment traps or basins may be considered. All necessary control measures will be maintained until termination of the NPDES permit. Permanent control structures will be installed to minimize sediment transport off the project area, to reduce surface flow velocities, to direct runoff across the project area with minimal surface erosion, and to redirect surface runoff away from the project area and into natural drainages or stable vegetated areas. Erosion and sediment control will be accomplished through a combination of construction techniques, vegetation, and structural features. 3.1 Erosion and Sediment Controls The objective of this plan is to minimize erosion of disturbed areas during construction and post - construction phases of the proposed pipeline project. The effects of construction activities can be minimized by: • Limiting the disturbance to the smallest area possible to accomplish the project objectives; • Avoiding areas of sensitive habitats, if possible; • Keeping the amount of cut and fill to a minimum; • Diverting up slope runoff to more stable locations; • Using the appropriate BMPs and other control measures to remove or reduce pollutants from storm water prior to discharge from the construction site; and • Stabilizing slopes and revegetating disturbed areas as soon as practicable. 191-03 Storm Water Management Plan 6 Storni Water Management Plan - Antero Resources Piceance Basin Throughout all phases of construction activities, various BMPs and erosion control measures will be implemented to minimize the contact of storm water with materials or reduce pollutants in storm water. Appropriate BMPs and erosion control measures will be used as temporary measures during construction to control erosion and as permanent measures following construction to stabilize disturbed areas. Application of erosion and sediment control measures will be based on site-specific characteristics. Stabilization Practices The following practices will be employed to stabilize disturbed areas. • Existing cover will be removed only where necessary for the operation of equipment. In general, vegetation will be cut off near ground level, leaving the root systems intact. Cuttings will be distributed over the project area during reclamation or disposed as directed by the landowner/agency representative. • Trees and large shrubs that are not cleared from the project area will be protected from damage during construction by avoiding them with equipment. For example bulldozers will maintain their blades in a raised position except for areas designated for clearing or to smooth out sharp breaks in relief. • Trees will be cut or trimmed only to facilitate clearing, grading, and safe installation. • Trees that must be removed will be cut. Trees outside the area of disturbance will not be cut, but will only have overhanging limbs removed by cutting, with the tree to remain. The bulldozers will maintain their blade in a raised position in these sensitive visual resource areas, where practical. • Unless otherwise directed by the landowner or the jurisdictional authority, rocks, cut vegetation, and other surface material temporarily stockpiled for construction will be redistributed back across the disturbed project area following construction. • Disturbed areas will be seeded using seed mixes appropriate to the location. A seed mix recommended by the NRCS will be applied to the project area. • On terrain where drilling seed is appropriate, seed will be planted using a drill equipped with a depth regulator to ensure proper depth of planting. The seed mix will be evenly and uniformly planted over the disturbed area. Drilling will be used where topography and soil conditions allow operation of equipment to meet the seeding requirements of the species being planted. • Broadcast seeding will occur on steep terrain and on areas that are impracticable for drilling. Where broadcast seeding occurs, the rate of seeding will be doubled. Broadcast seed will be harrowed or raked following application. 191-03 Storm Water Management Plan 7 Storm Water Management Plan - Antero Resources Piceavice Basin • Seeding will be done when seasonal or weather conditions are most favorable according to schedules identified by the jurisdictional authority or landowner. Whenever possible, seeding will be timed to take advantage of moisture, such as early spring or late fall to benefit fully from winter precipitation. • Seed mixes will be planted in the amount specified in pounds of pure live seed per acre, where necessary. There will be no primary or secondary noxious weeds in the seed mix. Commercial seed will be either certified or registered seed. • The re-establishment of vegetative cover as well as watershed stabilization measures will be scheduled during the working season and before the succeeding winter. In any case, revegetation treatments will be accomplished as quickly as possible after installing the pipeline. • The need for fertilizers will be determined in conjunction with the individual landowners or the jurisdictional authority. If fertilization is necessary, the rates of application will be based on site-specific samples of soil. Structural Practices • Side hill cuts will be kept to a minimum to protect local resources while providing a safe and stable plane for the efficient and safe use of equipment. • Where required, erosion control structures such as waterbars, diversion channels, and terraces will be constructed to divert water away from the project area and reduce soil erosion in the construction area and other adjoining areas disturbed during construction (Table I). Table 1 Spacing for Erosion Control Structures Slope (Percent) Diversion Spacing (Feet) 0 - 5 300 5 - 10 200 10+ 100 • Preliminary planning has not identified a requirement for sedimentation ponds. In the event field conditions develop where they are appropriate, the ponds will be reclaimed to near natural landscape and revegetated after successful reclamation of the areas disturbed by trenching. • Silt fences, straw bale dikes or equivalent sediment controls installed to protect adjacent downslope surface waters, wetlands, and roads from sediment flow due to runoff from a storm event. 191-03 Storni Water Management Plan 8 Storm Water Management Plan - Antero Resources Piceance Basin • For non-linear construction sites in drainage locations serving five or less acres, silt fences, straw bale dikes or equivalent sediment controls are required for all sideslope and downslope boundaries of the construction area, or a detention basin providing storage for runoff from a ten-year, 24-hour storm event. • All graded surfaces, walls, dams and structures, vegetation, erosion and sediment control measures, and other protective devices identified in the site plan will be maintained, repaired, or restored as necessary. • Grading will be done only when necessary for the safe operation of equipment and for fire protection. • Excavation in especially sensitive areas may be conducted according to special techniques as specified by the landowner/agency representative. • All cuts made in steep or rolling terrain during construction will be regraded and contoured to blend into the adjoining landscape and to reestablish the natural drainage patterns. • Materials that are unsuitable for use as backfill or excess backfill material will be disposed at approved locations. 3.2 Storm Water Management Detention and flow attenuation controls may include the following: • During construction near streams, lakes or wetlands, sedimentation (detention) basins, straw bales or fabric filters will be constructed to prevent suspended sediments from reaching downstream watercourses or lakes. • Where necessary, waterbars or sediment filters, such as staked straw bales or silt fences, will be constructed adjacent to the crossings to reduce potential sedimentation in streams or wetlands. • No discharge will occur to watercourses. Velocity dissipation devices will be placed at discharge locations and along the length of any outfall channel as necessary to provide a non-erosive velocity flow from the structure to a surface discharge area so that the natural physical and biological characteristics and functions are maintained and protected. 3.3 Other Controls The following control measures and good housekeeping practices will be implemented to prevent or minimize potentially polluting construction materials from contact with storm water: 191-03 Storm Water Management Plan 9 Storm Water Management Plan - Antero Resources Piceance Basin • Water sprinkling will be implemented for airborne dust control on unpaved haul roads and other graded traffic routes. Topsoil and spoil storage piles will be sprayed, as needed, to minimize the effects of wind erosion and reduce fugitive dust. Conditions will be monitored throughout construction and the construction area will be resprayed, as needed. • Regular garbage, rubbish, construction wastes, and sanitary waste disposal will be maintained at all times during construction activities. Sanitary sewage facilities (portable chemical toilets) will be provided at all work locations. Sanitary waste will be collected and removed for disposal at an appropriate licensed sewage disposal facility. No sewage will be buried, dumped, or discharged to waters of the state. • Storage areas, protected from storm water runoff, will be provided for chemicals, paints, solvents, fuel, lubricating oils, and other potentially toxic or hazardous materials. • All hazardous materials or products will be properly contained and disposed of in accordance with applicable laws, rules, and regulations. No wastes of imported materials will be buried, dumped, or discharged to waters of the state. • Refueling and lubrication of equipment will not be conducted within 100 feet of any waterway or wetland. Chemicals, paints, solvents, fuel, lubricating oils, and other potentially toxic or hazardous materials will not be stored within 100 feet of waterways or wetlands. • Any spills of liquid or dry materials that have occurred will be promptly cleaned up. Spills of toxic or hazardous material will be reported to the appropriate state or local government agency. • If any measurable quantity of sediment is discharged from the project area as a result of structural failure or lack of designed capacity of temporary erosion control measures, the sediment will be cleaned up as soon a practicable and placed back on the project area or properly disposed of in a manner approved by the NPDES general permit. • Gravel/stone ramps will be installed at access points to public roadways, as needed, to prevent or minimize the tracking of mud, dirt, sediment, or similar materials onto the roadway. Deposits that have been tracked by vehicles or have been transported off the project area by wind or storm water will be promptly cleaned up. • Construction equipment and vehicles will be inspected for leaks, and necessary repairs will be made before placing the equipment back in service. All equipment will be cleaned and inspected prior to entering a stream, and no leaking equipment will be allowed within the waterway. • Wash -down areas protected from storm water runoff will be provided for construction equipment and vehicle cleanup. 191-03 Storm Water Management Plan 10 Storm Water Management Pia,, - Antero Resources Piceance Basin 4.0 MAINTENANCE The construction subcontractor will be responsible for the implementation and maintenance of this plan. Antero's designated inspector will be responsible for insuring that the construction subcontractor is in compliance with this plan. Maintenance will be performed on an as -needed basis based upon the results of inspections conducted at the site. 5.0 INSPECTIONS During construction, qualified personnel from Antero will inspect disturbed areas, structural control measures, and locations where vehicles access the project area at least once each month and within 24 hours of any precipitation event that exceeds 0.5 inch. During stormy periods, all erosion control facilities will be inspected by or under the direction of Antero daily. Storm water runoff discharges will be visually monitored at the above frequency to evaluate the effectiveness of the pollution control facilities or practices. If any measurable quantities of sediment are leaving the property, corrective action to minimize the discharge of sediments will be taken within 24 hours of discovery or as soon as weather and/or ground surface conditions will allow. An inspection report will be immediately prepared and signed by the inspector following each inspection. The report will include, at a minimum, the inspectors name, date of inspection, identify areas of noncompliance, identify corrective actions taken, and when the corrective actions were implemented. This record will be available for regulatory review upon request. Copies of the inspection reports will be retained at the construction site and at Antero's off-site office. Following final stabilization of this construction project, all records and information resulting from monitoring activities required by this permit will be retained by Antero's for a minimum of three years or longer, if requested by the regulatory agency. Copies of all records will be provided to the regulatory agency upon request. A copy of this plan will be maintained at the construction site except when the project may be shut down. 6.0 TRAINING All construction and site personnel will be properly trained in accordance with permit guidelines. Training will address selection, maintenance and installation of pollution controls, spill response, good housekeeping, and material management. Contractors and inspectors will be informed of 191-03 Storni Water Management Plan 11 Storer Water Management Plan - Antero Resources Piceance Basin the project requirements prior to the start of construction activities and updated periodically throughout the construction activities. Training records will be maintained for a minimum of three years from construction start. 191-03 Storm Water Management Plan 12 Storm Water Management Plan - Anlero Resources Piceance Basin CERTIFICATION STATEMENT I certify under penalty of the law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Facility Operator: Antero Resources Corporation Date 191-03 Storni Water Management Plan 13 Storm Water Management Plan - Antero Resources Piceance Basin CONTRACTOR CERTIFICATION STATEMENT I certify under penalty of law that I understand the terms and conditions of the general National Pollutant Discharge Elimination System (NPDES) permit that authorizes the storm water discharges associated with construction activity from the construction site identified as part of this certification. Further, by my signature, I understand that I am becoming a co- permittee, along with the owner(s) and other contractors and subcontractors signing such certifications, to the general NPDES permit for the storm water discharges associated with construction activity from the identified site. As a co -permittee, I understand that I and my company are legally required under the Clean Water Act to ensure compliance with the terms and conditions of the storm water erosion control plan developed under the NPDES permit and the terms of the NPDES permit. Contractor (Name, Title, and Company): Subcontractor (Name, Title, and Company): Subcontractor (Name, Title, and Company): Subcontractor (Name, Title, and Company): 191-03 Storm Water Management Plan 14 Date Date Date Date Storm Water Management Plan - Antero Resources Piceance Basin 191-03 Stonn Water Management Plan EXHIBIT A MAPS 15 Storm Water Management Plan - Antero Resources Piceance Basin EXHIBIT B WETLAND and WATER BODY CROSSING MITIGATION MEASURES Project activities will be accomplished under U.S. Army Corps of Engineers, Nationwide Permit No. 12 (NWP 12) provided there are no changes in preconstruction contours and the below stipulations are followed: • Material resulting from trench excavation may be temporarily sidecast into waters of the U.S. provided that the material is not place in such a manner that it is dispersed by currents or other forces. • In wetlands, the top 6 -inches to 12 -inches of the trench should normally be backfilled with topsoil form the trench. Furthermore, the trench cannot be constructed in such a manner as to drain waters of the U.S. (install trench plugs). • Any exposed slopes and stream banks must be stabilized immediately upon completion of the crossing of each waterbody. • Antero shall comply wit all of NWP 12's General Conditions including, but not limited to (see NWP 12 for complete list of General Conditions): o Soil Erosion and Sediment Controls: Appropriate soil and sediment controls must be used and maintained in effective operating condition during construction, and all exposed soil and other fills must be permanently stabilized at the earliest practicable dated. o Equipment: Heavy equipment working in wetlands must be placed on mats, or other measures must be taken to minimize soil disturbance. o Management of Water Flows: To the maximum extent practicable, the activity must be designed to maintain preconstruction downstream flow conditions. o Use of unsuitable material is prohibited. Organic debris, building waste, asphalt, car bodies, and junk materials are not suitable material • Regional Conditions for Nationwide Permits: For all activities using any existing and proposed nationwide permits, mitigation that is required by special condition must be completed before or concurrent with the project construction. o Removal of Temporary Fills: When temporary fills are placed in wetlands in Colorado, a horizontal marker (i.e. fabric, certified weed -free straw, etc.) must be used to delineate the existing ground elevation of wetlands that will be temporarily filled during construction. Section 401 Water Quality Certification. NWP No. 12 in Colorado has 401 water quality certification and assures that the covered discharges will comply with state water quality standards, by requiring certain practices and discharge standards. Compliance with Section 401 will be accomplished through implementing NWP 12's mitigation measures (listed above) and the CDPHE Stormwater Discharge Permit (to be obtained prior to construction activities). O&G is providing the following mitigation measures for Waters of the U.S. crossings including wetlands. These mitigation measures were obtained from Nationwide Permit No. 12 (NWP 12) 191-03 Storm Water Management Plan 16 Storm Water Management Plan -Antero Resources Piceance Basin and the Federal Energy Regulatory Commission (FERC) Upland Erosion Control, Revegetation, and Maintenance Plan (Plan) and Wetland and Waterbody Construction and Mitigation Procedures (Procedures). This is not a FERC jurisdictional project; therefore, these mitigation measures are only recommendations for the contractor to maintain compliance with NWP No. 12 during each of these crossings. The FERC Plan and Procedures are designed to assist the contractor with identifying baseline mitigation measures for minimizing the extent and duration of project -related disturbance on wetlands and waterbodies. Preconstruction Mitigation Measures The following preconstruction mitigation measures shall occur prior to any surface disturbance activities. Preconstruction Planning • A copy of the Stormwater Management Plan (SWMP) prepared in compliance with the Colorado Department of Health and Environment (CDPHE) shall be available in the field. The SWMP is part with the Storm Water Discharge Notices of Intent (NOIs) obtained from each state. • Antero and its contractors shall structure their operations in a manner that reduces the risk of spills or the accidental exposure of fuels or hazardous materials to waterbodies or wetlands and at a minimum, ensure that: o All equipment is in good operating order and inspected on a regular basis. o All equipment is parked overnight and/or fueled at lest 100 feet from a waterbody or in a upland area at least 100 feet from a wetland boundary. o Hazardous materials are not to be stored within 100 feet of a wetland or waterbody. o Concrete coating activities are not performed within 100 feet of a wetland or waterbody boundary. • Antero and its contractor must structure their operations in a manner that provides for the prompt and effective cleanup of spills of fuel and other hazardous materials. • Antero and its contractor shall implement project activities associated with each crossing in compliance with NWP No. 12 (see Summary Section above). Extra Work Areas • Locate all extra work areas (such as staging areas and additional spoil storage areas) at least 50 feet away from water's edge, except where the adjacent upland consists of actively cultivated or rotated cropland or other disturbed land. • Limit clearing of vegetation between extra work areas and the edge of the waterbody to the certificated construction right-of-way. • Limit the size of extra work areas to the minimum needed to construct the waterbody crossing. 191-03 Storm Water Management Plan 17 Storm Water Management Plan - Antero Resources Piceance Basin Refer to the FERC Procedures for a complete list of preconstruction recommendations (Section IV, attached). Construction Mitigation Measures The following construction mitigation measures shall be implemented during construction. General Crossing Procedures • Comply with the NWP No. 12, or its delegated agency, permit terms and conditions (see Summary Section above). • Construct crossings as close to perpendicular to the axis of the waterbody channel as engineering and routing conditions permit. • If the pipeline parallels a waterbody, attempt to maintain at least 15 feet of undisturbed vegetation between the waterbody (and any adjacent wetland) and the construction right- of-way. • Where waterbodies meander or have multiple channels, route the pipeline to minimize the number of waterbody crossings. • Maintain adequate flow rates to protect aquatic life, and prevent the interruption of existing downstream uses. • Waterbody buffers (extra work area setbacks, refueling restrictions, etc.) must be clearly marked in the field with signs and/or highly visible flagging until construction -related ground disturbing activities are complete. Spoil Pile Placement and Control • All spoil from minor and intermediate waterbody crossings, and upland spoil from major waterbody crossings, must be placed in the construction right-of-way at least 10 feet from the water's edge or in additional extra work areas. • Use sediment barriers to prevent the flow of spoil or heavily silt -laden water into any waterbody. Equipment Bridges • Only clearing equipment and equipment necessary for installation of equipment bridges may cross waterbodies prior to bridge installation Limit the number of such crossings of each waterbody to one per piece of clearing equipment. • Construct equipment bridges to maintain unrestricted flow and to prevent soil from entering the waterbody. Examples of such bridges include: 1. equipment pads and culvert(s); 2. equipment pads or railroad car bridges without culverts; 3. clean rock fill and culvert(s); and 4. flexi-float or portable bridges. 191-03 Storm Water Management Plan 18 Storm Water Management Plan - Anlero Resources Piceance Basin Additional options for equipment bridges may be utilized that achieve the performance objectives noted above. Do not use soil to construct or stabilize equipment bridges. • Design and maintain each equipment bridge to withstand and pass the highest flow expected to occur while the bridge is in place. Align culverts to prevent bank erosion or streambed scour. If necessary, install energy dissipating devices downstream of the culverts. • Design and maintain equipment bridges to prevent soil from entering the waterbody. • Remove equipment bridges as soon as possible after permanent seeding unless the COE, or its delegated agency, authorizes it as a permanent bridge. • If there will be more than 1 month between final cleanup and the beginning of permanent seeding and reasonable alternative access to the right-of-way is available, remove equipment bridges as soon as possible after final cleanup. Horizontal Directional Drill (HDD) • For each waterbody or wetland that would be crossed using the HDD method, provide a plan that includes: (1) site-specific construction diagrams that show the location of mud pits, pipe assembly areas, and all areas to be disturbed or cleared for construction; (2) a description of how an inadvertent release of drilling mud would be contained and cleaned up; and (3) a contingency plan for crossing the waterbody or wetland in the event the directional drill is unsuccessful and how the abandoned drill hole would be sealed, if necessary. Crossings of Minor Waterbodies Where a dry -ditch crossing is not required, minor waterbodies may be crossed using the open -cut crossing method, with the following restrictions: • except for blasting and other rock breaking measures, complete instream construction activities (including trenching, pipe installation, backfill, and restoration of the streambed contours) within 24 hours. Streambanks and unconsolidated streambeds may require additional restoration after this period; • limit use of equipment operating in the waterbody to that needed to construct the crossing; and • equipment bridges are not required at minor waterbodies that do not have a state - designated fishery classification (e.g., agricultural or intermittent drainage ditches). However, if an equipment bridge is used it must be constructed as described in section V.B.5 (Procedures). Crossings of Major Waterbodies No major waterbody crossings are anticipated. 191-03 Storm Water Management Plan 19 Storm Water Management Plan - Antero Resources Piceance Basin Temporary Erosion and Sediment Control Install sediment barriers (as defined in section IV.F.2.a. of the Plan, attached) immediately after initial disturbance of the waterbody or adjacent upland. Sediment barriers must be properly maintained throughout construction and reinstalled as necessary (such as after backfilling of the trench) until replaced by permanent erosion controls or restoration of adjacent upland areas is complete. Temporary erosion and sediment control measures are addressed in more detail in the Plan; however, the following specific measures must be implemented at stream crossings (this applies if jurisdictional crossings that are wet (flowing water) at the time of the crossing): • install sediment barriers across the entire construction right-of-way at all waterbody crossings, where necessary to prevent the flow of sediments in the waterbody. In the travel lane, these may consist of removable sediment barriers or driveable berms. Removable sediment barriers can be removed during the construction day, but must be re -installed after construction has stopped for the day and/or when heavy precipitation is imminent; • where waterbodies are adjacent to the construction right-of-way, install sediment barriers along the edge of the construction right-of-way as necessary to contain spoil and sediment within the construction right-of-way; and • use trench plugs at all waterbody crossings, as necessary, to prevent diversion of water into upland portions of the pipeline trench and to keep any accumulated trench water out of the waterbody (install trench pugs, at each open -cut crossing, regardless of the presence or absence of flow). Trench Dewatering Dewater the trench (either on or off the construction right-of-way) in a manner that does not cause erosion and does not result in heavily silt -laden water flowing into any wetland. Remove the dewatering structures as soon as possible after the completion of dewatering activities. Post Construction Mitigation Measures The following post construction mitigation measures shall be implemented after construction. Restoration • For open -cut crossings, stabilize waterbody banks and install temporary sediment barriers within 24 hours of completing instream construction activities. For dry -ditch crossings, complete streambed and bank stabilization before returning flow to the waterbody channel. • Return all waterbody banks to preconstruction contours or to a stable angle of repose as approved by the Environmental Inspector. • Application of riprap for bank stabilization must comply with NWP No. 12, or its delegated agency, permit terms and conditions. 191-03 Storm Water Management Plan 20 Storni Water Management Plan -Antero Resources Piceance Basin • Unless otherwise specified by state permit, limit the use of riprap to areas where flow conditions preclude effective vegetative stabilization techniques such as seeding and erosion control fabric. • Revegetate disturbed riparian areas with conservation grasses and legumes or native plant species, preferably woody species. • Install a permanent slope breaker across the construction right-of-way at the base of slopes greater than 5 percent that are less than 50 feet from the waterbody, or as needed to prevent sediment transport into the waterbody. In addition, install sediment barriers as outlined in the Plan. In some areas, with the approval of the Environmental Inspector, an earthen berm may be suitable as a sediment barrier adjacent to the waterbody, • Sections V.C.3. through V.C.6. above also apply to those perennial or intermittent streams not flowing at the time of construction. Post Construction Maintenance • Limit vegetation maintenance adjacent to waterbodies to allow a riparian strip at least 25 feet wide, as measured from the waterbody's mean high water mark, to permanently revegetate with native plant species across the entire construction right-of-way. However, to facilitate periodic pipeline corrosion/leak surveys, a corridor centered on the pipeline and up to 10 feet wide may be maintained in a herbaceous state. In addition, trees that are located within 15 feet of the pipeline that are greater than 15 feet in height may be cut and removed from the permanent right-of-way. • Do not use herbicides or pesticides in or within 100 feet of a waterbody except as allowed by the appropriate land management or state agency. Wetland Crossings Route the pipeline to avoid wetland areas to the maximum extent possible. If a wetland cannot be avoided or crossed by following an existing right-of-way, route the new pipeline in a manner that minimizes disturbance to wetlands. General Wetland Mitigation • Limit the width of the construction right-of-way to 75 feet or less. • Wetland boundaries and buffers must be clearly marked in the field with signs and/or highly visible flagging until construction -related ground disturbing activities are complete. • Implement the measures of sections V. and VI, (Procedures) in the event a waterbody crossing is located within or adjacent to a wetland crossing. • Do not locate aboveground facilities in any wetland, except where the location of such facilities outside of wetlands would prohibit compliance with U.S. Department of Transportation regulations. 191-03 Storm Water Management Plan 21 Storni Water Management Plan - Antero Resources Piceance Basin Extra Work Areas and Access Roads Associated with Wetlands • Locate all extra work areas (such as staging areas and additional spoil storage areas) at least 50 feet away from water's edge, except where the adjacent upland consists of actively cultivated or rotated cropland or other disturbed land. • Limit clearing of vegetation between extra work areas and the edge of the waterbody to the certificated construction right-of-way. • The Construction right-of-way may be used for access when the wetland soil is firm enough to avoid rutting or the construction right-of-way has been appropriately stabilized to avoid rutting (e.g., with timber riprap, prefabricated equipment mats, or terra mats). In wetlands that cannot be appropriately stabilized, all construction equipment other than that needed to install the wetland crossing shall use access roads located in upland areas. Where access roads in upland areas do not provide reasonable access, limit all other construction equipment to one pass through the wetland using the construction right-of- way. Wetland Crossing Procedures • Comply with NWP No. 12. • Assemble the pipeline in an upland area unless the wetland is dry enough to adequately support skids and pipe. • Use "push-pull" or "float" techniques to place the pipe in the trench where water and other site conditions allow. • Minimize the length of time that topsoil is segregated and the trench is open. • Limit construction equipment operating in wetland areas to that needed to clear the construction right-of-way, dig the trench, fabricate and install the pipeline, backfill the trench, and restore the construction right-of-way. • Cut vegetation just aboveground level, leaving existing root systems in place, and remove it from the wetland for disposal. • Limit pulling of tree stumps and grading activities to directly over the trenchline. Do not grade or remove stumps or root systems from the rest of the construction right-of-way in wetlands. Safety-related construction constraints allow for grading or the removal of tree stumps from under the working side of the construction right-of-way within a wetland. • Segregate the top 1 foot of topsoil from the area disturbed by trenching, except in areas where standing water is present or soils are saturated or frozen. Immediately after backfilling is complete, restore the segregated topsoil to its original location. • Do not use rock, soil imported from outside the wetland, tree stumps, or brush riprap to support equipment on the construction right-of-way. • If standing water or saturated soils are present, or if construction equipment causes ruts or mixing of the topsoil and subsoil in wetlands, use low -ground weight construction equipment, or operate normal equipment on timber riprap, prefabricated equipment mats, or terra mats. • Do not cut tress outside of the approved construction work area to obtain timber for riprap or equipment mats. • Attempt to use no more than two layers of timber riprap to support equipment on the construction right-of-way. 191-03 Storm Water Management Plan 22 Storm Water Management Plan - Antero Resources Piceance Basin • Remove all project -related material used to support equipment on the construction right- of-way upon completion of construction. Temporary Sediment Control in Wetlands Install sediment barriers (as defined in section IV.F.2.a. of the Plan, attached) immediately after initial disturbance of the wetland or adjacent upland. Sediment barriers must be properly maintained throughout construction and reinstalled as necessary (such as after backfilling of the trench). Except a noted below in section VI.B.3.c., maintain sediment barriers until replaced by permanent erosion controls or restoration of adjacent upland areas is complete. Temporary erosion and sediment control measures are addressed in more detail in the Plan. • Install sediment barriers across the entire construction right-of-way at all wetland crossings where necessary to prevent sediment flow into the wetland. In the travel lane, these may consist of removable sediment barriers or driveable berms. Removable sediment barriers can be removed during the construction day, but must be re -installed after construction has stopped for the day and/or when heavy precipitation is imminent. • Where wetlands are adjacent to the construction right-of-way and the right-of-way slopes toward the wetland, install sediment barriers along the edge of the construction right-of- way as necessary to prevent sediment flow into the wetland. • Install sediment barriers along the edge of the construction right-of-way as necessary to contain spoil and sediment within the construction right-of-way through wetlands. Remove these sediment barriers during right-of-way cleanup. Wetland Restoration • Where the pipeline trench may drain a wetland, construct trench breakers and/or seal the trench bottom as necessary to maintain the original wetland hydrology. • For each wetland crossed, install a trench breaker at the base of slopes near the boundary between the wetland and adjacent upland areas. Install a permanent slope breaker across the construction right-of-way at the base of a slope greater than 5 percent where the base of the slope is less than 50 feet from the wetland, or as needed to prevent sediment transport into the wetland. In addition, install sediment barriers as outlined in the Plan (attached). In some areas, an earthen berm may be suitable as a sediment barrier adjacent to the wetland. • Do not use fertilizer, lime, or mulch unless required in writing by the appropriate land management or state agency. • Consult with the appropriate land management or state agency to develop a project - specific wetland restoration plan. The restoration plan should include measures for re- establishing herbaceous and/or woody species, controlling the invasion and spread of undesirable exotic species (e.g., purple loosestrife and phragmites), and monitoring the success of the revegetation and weed control efforts. • Until a project -specific wetland restoration plan is developed and/or implemented, temporarily revegetate the construction right-of-way with annual ryegrass at a rate of 40 pounds/acre (unless standing water is present). 191-03 Storm Water Management Plan 23 Storm Water Management Plan - Antero Resources Piceance Basin • Ensure that all disturbed areas successfully revegetate with wetland herbaceous and/or woody plant species. • Remove temporary sediment barriers located at the boundary between wetland and adjacent upland areas after upland revegetation and stabilization of adjacent upland areas are judged to be successful as specified in section VII.A.5. of the Plan. Post Construction Maintenance in Wetlands • Do not conduct vegetation maintenance over the full width of the permanent right-of-way in wetlands. However, to facilitate periodic pipeline corrosion/leak surveys, a corridor centered on the pipeline and up to 10 feet wide may be maintained in a herbaceous state. In addition, trees within 15 feet of the pipeline that are greater than 15 feet in height may be selectively cut and removed from the permanent right-of-way. • Do not use herbicides or pesticides in or within 100 feet of a wetland, except as allowed by the appropriate land management agency or state agency. • Monitor and record the success of wetland revegetation annually for the first 3 years after construction or until wetland revegetation is successful. At the end of 3 years after construction, file a report with the Secretary identifying the status of the wetland revegetation efforts. Include the percent cover achieved and problem areas (weed invasion issues, poor revegetation, etc.). Continue to file a report annually until wetland revegetation is successful. • Wetland revegetation shall be considered successful if the cover of herbaceous and/or woody species is at least 80 percent of the type, density, and distribution of the vegetation in adjacent wetland areas that were not disturbed by construction. If revegetation is not successful at the end of 3 years, develop and implement (in consultation with a professional wetland ecologist) a remedial revegetation plan to actively revegetate the wetland. Continue revegetation efforts until wetland revegetation is successful. 191-03 Storm Water Management Plan 24 ANTERO RESOURCES II CORPORATION SPILL PREVENTION CONTROL & COUNTERMEASURE PLAN Lundgren Project Prepared for: Antero Resources Corporation 1625 17th Street — Suite 300 Denver, Colorado 80202 October 2005 2 Table of Contents Project Information 3 1.0 General Information 4 1.1 Management Approval and Review 4 1.2a Professional Engineer Certification (Drilling) 4 1.2b Professional Engineer Certification (Operations) 5 1.3 Substantial Harm Certification (excerpt from 40 CFR Part 112 - Attachment CIII) 6 1.4 Contact List and Phone Numbers 7 1.5 Notification Data Sheet 7 1.6 Personnel, Training, and Discharge Prevention Procedures 7 1.7 Facility Layout and Diagram 7 1.71 Facility Layout 7 1.8 Prevention, Response and Cleanup 8 1.9 Impracticability (as applicable) 8 2A Onshore Oil Drilling and Workover Facilities 9 2A.1 Facility Containers 9 2A.2 Positioning of Equipment 10 2A.3 Containment 10 2A.4 Blowout Prevention (BOP) Assembly 10 A.5 Inspections, Tests and Records 10 2B Onshore Oil Production 11 2B.1 Container and Potential Spills Table 11 2B.2 Bulk Storage Containers 12 2B.3 Facility Drainage 12 2B.4 Facility Transfer 13 2B.4.1 Saltwater Disposal Facilities 13 2B.4.2 Flowline Maintenance Program 13 2B.5 Facility Tank Car & Tank Truck Loading/Unloading Rack 13 2B.5.1 Tank Car & Tank Truck Containment Systems 13 2B.5.2 Prevention of Premature Vehicular Departure 13 2B.5.3 Drain and Outlet Inspection 14 2B.6 Inspections, Tests and Records 14 Appendix A 16 Appendix B 19 Appendix C 21 Facility: Date: 3 Project Information 1. Name of Facility: Lundgren Project 2. Type of Facility: Onshore Exploratory Gas Well Drilling 3. Location of Facility: Sections 32, TSS, R92W Garfield County, Colorado 4. Name and Address of Owner or Operator: Antero Resources Corporation 1625 17th Street — Suite 300 Denver, Colorado 80202 Facility: Date: 1.0 General Information 1,1 Management Approval and Review 4 Management Approval Owner/Operator responsible for Facility: Antero Resources II Corporation Facility Name and Location: Lundgren Project Sections 32, T5S, R92W, Garfield County, Colorado. See attached topographic map. • This SPCC Plan will be implemented as herein described. Signature: Name: Terrell A. Dobkins Date: Title: Vice President -Production Designated person accountable for oil spill Prevention at the Facility: Name: Gene Byars Title: Drilling Supervisor 1.2a Professional Engineer Certification (Drilling) Professional Engineer Certification By means of this Professional Engineer Certification, I hereby attest to the following: • I am familiar with the requirements of 40 CFR Part 112 and have verified that this Plan has been prepared in accordance with the requirements of this Part. • I or my agent have visited and examined the Facility(s). • I have verified that this Plan has been prepared in accordance with good engineering practice, including consideration of applicable industry standards. • I have verified that the required inspection and testing procedures have been established as described in Section 2. • I have verified that the Plan is adequate for the Facility. Printed Name of Registered Professional Engineer (Seal) Signature of Registered Professional Engineer Date Registration No. State Facility: Date: 1.2b Professional Engineer Certification (Operations) Drilling Certification By means of this Drilling Certification, I hereby attest to the following: • I am familiar with the requirements of 40 CFR Part 112 and have verified that this Plan has been prepared in accordance with the requirements of this Part. • I or my agent have visited and examined the Facility(s). • I have verified that this Plan has been prepared in accordance with good engineering practice, including consideration of applicable industry standards. • I have verified that the required inspection and testing procedures have been established as described in Section 2. • I have verified that the Plan is adequate for the Facility. Printed Name of Registered Driller (Seal) Signature of Registered Driller Date Registration No. State 1.3 Substantial Harm Certification (excerpt from 40 CFR Part 112 - Attachment CIII) 6 CERTIFICATION OF THE APPLICABILITY OF THE SUBSTANTIAL HARM CRITERIA FACILITY NAME: Piceance Basin Project FACILITY ADDRESS: Private Road off north Frontage Road, approximately 0.7 miles east of I-70, Exit 94 (near Rifle, Colorado). See topographic map. 1. Does the facility transfer oil over water to or from vessels and does the facility have a total oil storage capacity greater than or equal to 42,000 gallons? YES NO X 2. Does the facility have a total oil storage capacity greater than or equal to 1 million gallons and does the facility lack secondary containment that is sufficiently large to contain the capacity of the largest aboveground oil storage tank plus sufficient freeboard to allow for precipitation within any aboveground oil storage tank area? YES NO X 3. Does the facility have a total oil storage capacity greater than or equal to 1 million gallons and is the facility located at a distance (as calculated using the appropriate formula in Attachment C -III to this appendix or a comparable formula') such that a discharge from the facility could cause injury to fish and wildlife and sensitive environments? For further description of fish and wildlife and sensitive environments, see Appendices I, II, and III to DOC/NOAA's "Guidance for Facility and Vessel Response Plans: Fish and Wildlife and Sensitive Environments" (59 FR 14713, March 29, 1994) and the applicable Area Contingency Plan. YES NO X 4. Does the facility have a total oil storage capacity greater than or equal to 1 million gallons and is the facility located at a distance (as calculated using the appropriate formula in Attachment C -III to this appendix or a comparable formula') such that a discharge from the facility would shut down a public drinking water intake2? YES NO X 5. Does the facility have a total oil storage capacity greater than or equal to 1 million gallons and has the facility experienced a reportable oil spill in an amount greater than or equal to 10,000 gallons within the last 5 years? YES NO X CERTIFICATION I certify under penalty of law that I have personally examined and am familiar with the information submitted in this document, and that based on my inquiry of those individuals responsible for obtaining this information, I believe that the submitted information is true, accurate, and complete. Vice President - Production Signature Title Terrell A. Dobkins Name (please type or print) Date If a comparable formula is used, documentation of the reliability and analytical soundness of the comparable formula must be attached to this form. — For the purposes of 40 CFR part 112, public drinking water intakes are analogous to public water systems as described at 40 CFR 143.2(c). Facility: Date: Spill Prevention, Control, and Countermeasure Plan 7 1.4 Contact List and Phone Numbers The contact list and phone number reference for the Facility is provided as follows: ❑ Contact List and Phone Number reference provided in Appendix A. 1.5 Notification Data Sheet A Notification Data Sheet is provided as follows: ❑ Notification Data Sheet provided in Appendix A. 1.6 Personnel, Training, and Discharge Prevention J --" diires Training • The Facility provides the following minimum 1 • Operation and maintenance of equipment 1 • Oil discharge procedure protocols; • Applicable oil spill prevention (State & F ) tions; • General facility operations; and, /7V0/ / a • The contents of the facility SPCC Plan ar �d U. laws, rules, and regulations. /d Briefings /1'a CC/71 of - The Facility conducts prevention briefings ' :00a.:5:937(8 800.543,9378 �, �,( adequate understanding of the SPCC Plar potential discharges or component failures Your HUD/FHA Answer To Homeownership mel: Documentation least once a year to assure ;fings include discussion of • Documentation of the annual SPCC briefing is maintained for a minimum period of three (3) years. The SPCC briefing logs are provided in Appendix B. 1.7 Facility Layout and Diagram 1.7.1 Facility Layout • The physical layout of the Piceance Basin Project is described as follows: The proposed development of a gas field south of Silt, Garfield County, Colorado will include 1 drill pad, access roads, gathering pipeline, and associated facilities. Each well pad will require approximately 1.38 acres in surface disturbance. An additional 1.18 acres in surface disturbance would occur as a result of developing or improving access roads and gathering pipelines. A typical facility layout is included in Appendix C. No North arrow is shown on the drawing. The orientation may vary from each site depending on topography. Each location will have the same equipment. The location of the equipment may vary slightly at each site. Facility: Date: Spill Prevention, Control, and Countermeasure Plan 8 .8 Prevention, Response and Cleanup Prevention Personnel are properly instructed in the following: 1. Procedures �-� • `maintenance of equipment to prevent oil discharges. 2. Applicable 95 81e6-eb5.008-1 'd regulations. 3. Spill Repo' r)up 8Ca 6120d Countermeasures Company personnel /'") b .nowledgeable in facility operations, including spill control procedures, 1 � (-1The operations areY ell. Therefore a spill resulting from drilling operations is unlikely. id 1,A1 Other equipment dIysjauMoa ti 01 s: bH anH a'nu y ano,� • Fuel tank A.1) • Drilling fluids tanks, vv.,. .1 Section 2A.1 ) The site is manned 24 -hours per day, 7 -days per week until completion of the well. Therefore any spills will be noticed immediately, stopped and cleaned up. Refueling — gage tank to insure it will contain requisite volume. Antero will ensure that responsible personnel are on site to monitor refueling. • A two sided earthen berm will be constructed on the low end of the well pad with trenching to the bermed area. A two sided berm (75 ft x 75 ft x 2 ft high) will contain the release of the largest tank (800 bbls) plus a 1.92 inch precipitation event. 1.9 Impracticability (as applicable) The containment and/or diversionary structures or equipment to prevent a discharge ®are O are not practicable. Reserve pits will not be utilized as the operation is a closed loop system. Facility: Date: Spill Prevention, Control, and Countermeasure Plan 9 2A Onshore Oil Drilling and Workover Facilities 2A.1 Facility Containers Container and Potential Spills Table • The potential spills sources at each well pad location is summarized in the following table: Container ID Substance Stored torp Shell Capacity (sats) Potential Failure Rate of Flow (saWhr) Direction of Flow (Provided on topo map in Appendix C) Containment Systems Bulk Storage Containers Tank 1 Fuel 191 Secondary containment - earthen berm Tank 2 Drilling Mud 800 Secondary containment -- earthen berm - See Appendix C for facility layout Operational Equipment Other Potential Spill Sources Fuel delivery truck • All mobile drilling or workover equipment ❑ are ❑O are not provided with appropriate secondary containment. If not describe the "impracticability" under Section 1.9. Facility: Date: Spill Prevention, Control, and Countermeasure Plan 10 2A.2 Positioning of Equipment • Mobile drilling and workover equipment ® is 0 is not positioned to prevent a discharge. If not, describe alternate protective measures: 2A.3 Containment • Describe the containment systems or other diversion structures utilized to intercept and contain discharges of oil (including fuel, crude oil, oily drilling fluids, etc.): A two-sided earthen berm will be constructed on the low end of the well pad with trenching to the bermed area. A two- sided berm (75 ft. x 75 ft x 2 ft high) will contain the release of the largest tank (800 bbls) plus a 1.92 inch precipitation event. 2A.4 Blowout Prevention (BOP) Assembly • A blowout preventer (BOP) assembly and well control system ® is 0 is not installed before drilling below any casing string or during workover operations. If not describe alternate protective measures: Depending on anticipated conditions a 3000 psi or 5000 psi BOP will be installed. 2A.5 Inspections, Tests and Records • Records of all inspections and tests (including those maintained under usual and customary business practices), signed by the appropriate supervisor or inspector are retained on file for a minimum period of three years. • The Facility has the following inspection and test procedures in place (describe the procedure, forms, location of records, etc.): All drilling companies and service companies already have their own inspection and test procedures in place. Spill Prevention, Control, and Countermeasure Plan 11 2B Onshore Oil/Gas Production 2B.1 Container and Potential Spills Table • The potential spills sources at each well production site are summarized in the following table: Container ID Substance Stored Shell Capacity (acts) Potential Failure Rate of Flow (MOO Direction of Flow (Provided on topo map in Appendix C) Containment System(s) Bulk Storage Containers Tank 1 Oil 300 Secondary containment — plastic lined earthen berm Tank2 Produced Water 300 Secondary containment — plastiac lined earthen berm Separator Antifreeze 1.80 Secondary containment — plastic lined earthen berm See Appendix C for facility layout Operational Equipment Three phase separator • See above "Separator" Truck Loading/Unloading Rack Tank unloading into trucks Refer to Sections 2B.5.1, 5.2, and 5.3 Other Potential Spill Sources Facility: Date: Spill Prevention, Control, and Countermeasure Plan 12 • The material and construction of bulk storage containers ® are compatible with the material stored and conditions of storage such as pressure and temperature. • All bulk storage container installations ® are ❑ are not constructed so that a means of secondary containment is provided for the entire capacity of the largest single container plus sufficient freeboard to contain precipitation. If not, describe the "impracticability" under Section 1.9. • Diked areas ® are sufficiently impervious to contain discharged products. 2.B.2 Bulk Storage Containers • The tank battery installation is provided with at least one of the following (Check all that apply): O Container capacity is adequate to assure that a container will not overfill if a pumper/gauger is delayed in making regularly scheduled rounds. ® Overflow equalizing lines exist between containers so that a full container can overflow to an adjacent container. O Vacuum protection is adequate to prevent container collapse during a pipeline run or other transfer of oil from the container. O High level sensors generate and transmit an alarm signal to the computer where the facility is subject to a computer production control system. U If none of the above is in place, describe alternate protective measures: 2B.3 Facility Drainage • Describe the measures that are employed to ensure contaminated rainwater is not discharged from the containment areas (include description of (a) inspection for pollutants and (b) method of valving security): (a) In the normal course of hauling produced fluids, Antero willl systematically remove all accumulated fluids in containment area when hauling salt water. (b) Antero will incorporate a procedure to seal all valves in the facility. • If oil is detected in containment areas or in field drainage systems, describe the removal procedures and the disposition of the recovered product. Spill will be cleaned up and properly disposed of in accordance with all EPA and Oil & Gas Commission requirements. • Drainage from undiked areas ® is 0 is not confined in a catchment basin or holding pond. If drainage of these undiked areas is not practicable, describe a contingency plan and document a written commitment of manpower. The production units are not in a diked area but the vessels are totally contained with piping to volume pots where hydrocarbons may be present at minimal levels (10 gallons maximum). Drainage from the volume pots are piped directly to Polution ControllContainers (PCC). Facility: Date: Spill Prevention, Control, and Countermeasure Plan 13 13.4 Facility Transfer Operations 2B.4.1 Saltwater Disposal Facilities • The Facility ❑ does lel does not have a saltwater disposal facility. If so, details of inspection are provided in Section 2B.6: 2B.4.2 Flowline Maintenance Program Describe the Facility flowline maintenance program: Flowline design to ensure all flowline is wrapped and coated, ensure adequate measures to prevent electrolysis and corrosion will be incorporated, Daily inspection of surface equipment is required by Antero. Measures to be described after completion of construction and production has commenced, (field verification required daily). 2B.5 Facility Tank Car & Tank Truck Loading/Unloading Rack • Tank truck loading/unloading 1$1 does ❑ does not occur at the Facility. • Tank car (rail) loading/unloading O does ® does not occur at the Facility. If yes to either, proceed with the following sub sections. If not, the remainder of Section 2B.5 does not apply. 2B.5.1 Tank Car & Tank Truck Containment Systems • Loadink/unloading area drainage ® does 0 does not flow into a catchment basin, treatment facility, or a quick drainage system designed to handle discharges. • The containment system 0 does ® does not hold the maximum capacity of any single compartment of a tank car or tank truck loaded or unloaded at the Facility. Describe containment system design, construction materials, and volume: Each load line for both production water and oil/condensate will utilize a PVC Pollution Control Container (8 gallon PCC to hold any leakage from transfer lines). • Refer to the Container and Potential Spills Table in Section 2B. 1 for additional details. 2B.5.2 Prevention of Premature Vehicular Departure • The methods, procedures, and/or equipment used to prevent premature vehicular departure include (Check all that apply): ❑ Interlocked warning lights, O Warning signs, ® Vehicle brake interlock systems, driver prior to departure. ❑ Physical barrier systems, 1$1 Wheel chocks, O Company personnel inspection with truck Facility: Date: Spill Prevention, Control, and Countermeasure Plan 14 Describe any other premature vehicular prevention measures: Before exiting the vehicle, emergency apparatus should be set in the 'ON" position. Immediately upon exiting the vehicle, wheel chocks should be set to prevent vehicle from moving forward or backward (placing one wheel chock in front of the front tire and one wheel chock behind the rear tire), thus immobilizing the vehicle. 2B.5.3 Drain And Outlet Inspection • Drains and outlets on tank trucks and tank cars ® are ❑ are not checked for leakage before loading/ unloading or departure and, if necessary, are tightened, adjusted or replaced. If not, describe alternate protective measures. [Additional pages may be attached as necessary for multiple truck and rail loading/unloading rack operations). 2B.6 Inspections, Tests and Records • Records of the inspections and tests (including those maintained under usual and customary business practices), signed by the appropriate supervisor or inspector, are retained on file for a minimum period of three (3) years. • Each container of oil ® is visually inspected for deterioration and maintenance needs, including the foundation and support of each container located on or above the surface of the ground. • In the event that a field -constructed aboveground container undergoes a repair, alteration, reconstruction, or a change in service, the container ® will O will not be evaluated for the risk of discharge or failure due to brittle fracture or other catastrophe. Facility: Date: Spill Prevention, Control, and Countermeasure Plan 15 • The Facility ❑ conducts an inspection of the following aboveground facility transfer operation appurtenances (check all that apply): ® Transfer operation piping and valves IKI Drip pans ❑ Pumping well polish rod stuffing boxes ❑ Other: ❑ Valve glands and bodies ❑ Pipe supports 0 Bleeder and gauge valves • The Facility 0 does 0 does not ID N/A conduct an inspection of saltwater disposal facilities. • The Facility has the following inspection and test procedures in place (describe the procedure, forms, location of records, etc.): Facility: Date: Spill Prevention, Control, and Countermeasure Plan 16 APPENDIX A NOTIFICATION • Contact List and Phone Numbers • Notification Data Sheet Facility: Date: Spill Prevention, Control, and Countermeasure Plan 17 Contact List and Phone Numbers The following is a contact list and phone number reference for the Facility: Contact Primary Alternate Designated Person Accountable For Oil Spill Prevention and/or Facility Response Coordinator Name/Title: John Kawcak / Operations Superintendent John Kawcak Wk: (817) 820-0035 Hm: (817) 503-7646 Cell: (817) 368-1553 Steve Fontenot Wk: (303) 357-7310 Hm: (719) 481-9493 Cell: (817) 308-2189 Name/Title: Steve Fontenot / Operations Superintendent National Response Center (800) 424-8802 (202) 267-2675 Cleanup Contractors (as necessary): Mathis and Associates, Nick Mathis (303) 913-0098 (303).300-6634 CGRS, Inc., Randy Kenyan (800) 288-2657 (24 hr) Other Federal, State and local agencies (as necessary) Colorado Deparhnent of Labor and Employment (Division of Oil and Public Safety) (303) 318-8547 (business hours) (877) 518-5608 (after hours) Colorado Department of Public Health and Environment (877) 518-5608 (24 hour reporting) Oil and Gas Conservation Commission (303) 894-2100 extension 121 EPA Region VIII (800) 227-8917 (303) 312-6312 City of Rifle — Department of Public Works Bill Sappington (970) 625-2122 Garfield County Health Department (970) 625-5200 Wildlife Company contacts: Gene Byars, Drilling Supervisor (on-site) (940) 300.3934 John Kawcak (817) 820-0035 (817) 368-1553 Steve Fontenot (303) 357-7310 (817) 308-2189 Terry Dobkins (303) 357-7318 (303) 808-6222 Facility: Date: Spill Prevention, Control, and Countermeasure Plan Notification Data Sheet 18 The Facility will utilize the following form to relate information in the event of a discharge: Date: Time: INCIDENT DESCRIPTION Reporter's Full Name: Position: Day Phone Number: Evening Phone Number: Company: Organization Type: Facility Address qtr, qtr, etc.: Owner's Address: Facility Latitude: Facility Longitude: Spill Location: (if not at Facility) Responsible Party's Name: Phone Number:_ Responsible Party's Address: Source and/or cause of discharge: Nearest City: County: State: Zip code: Section: Township: Distance from City: Direction from City: Container Type: Container Storage Capacity: Facility Oil Storage Capacity: Material: Range: Borough: Total Quantity Released Water Impact (YES or NO) Quantity into Water RESPONSE ACTION(S) Action(s) taken to Correct, Control, or Mitigate Incident: Number of Injuries. Evacnation(s): Damage Estimate: Number of Deaths: Number Evacuated: More information about impacted medium: CAI ISIt NO'IIFICA I IONS National Response Center (NRC): 1-800-424-8802 Additional Notifications (Circle all applicable): USCG EPA State Other ADD 1IIONA!, INFORMATION Any information about the incident not recorded elsewhere in this report: NOTE: DO NOT DELAY NOTIFICATION PENDING COLLECTION OF ALL INFORMATION. Facility: Date: Spill Prevention, Control, and Countermeasure Pian 19 APPENDIX B LOGS • Personal Training/Discharge Prevention Briefing Log Facility: Date: Spill Prevention, Control, and Countermeasure Pian 20 Personnel Training/Discharge Prevention Briefing Log TOPIC(S): (Note: Required topics must include SPCC Plan.) SIGN IN SHEET NAME (PLEASE PRINT) COMPANY/POSITION TELEPHONE 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Instructor: Date: Subject/Issue Identified Required Action Implementation Date: Facility: Date: Spill Prevention, Control, and Countermeasure Plan 21 APPENDIX C Facility Diagrams Topographic Map Facility: Date: Page 1 of 1 Cody Smith From: Steve Anthony [santhony@garfield-county.com] Sent: Monday, December 11, 2006 2:54 PM To: Cody Smith Subject: RE: Antero's Weed Control Plan Attachments: _AVG certification .txt Hi Cody The submitted plan is acceptable for now unitil the growing season at which time Antero may update the plan based on a growing season weed inventory. Thanks Steve From: Cody Smith[mailto:cody@wagonwheelconsulting.comj Sent: Thursday, December 07, 2006 3:19 PM To: Steve Anthony Cc: sfontenot©anteroresources.com Subject: Antero's Weed Control Plan Steve, Please find attachment of the weed control plan for Antero Resources Piceance Corporation that we had discussed earlier. Please let me know if this will be applicable for the SUP keeping in mind that a site specific weed control plan will be prepared to update the existing one in the spring, if made a condition of the permit. If you should have additional questions or comments please do not hesitate to contact me. Sincerely, Cody W. Smith Wagon Wheel Consulting 111 East 3rd St, Suite 213 Rifle, CO 81650 Office: 970-625-8433 Fax: 970-625-8435 Cell: 303-902-1532 12/11/2006 NOXIOUS WEED MANAGEMENT PLAN Piceance Basin Project Garfield County, Colorado Prepared for: Antero Resources Piceance Corporation June 2005 TABLE OF CONTENTS INTRODUCTION 1 NOXIOUS WEED SPECIES OF CONCERN 1 MANAGEMENT METHODS 2 Prevention 2 Eradication 3 Physical Control 3 Competitive Vegetation 4 Herbicides 4 Tables Table 1 Garfield County Designated Noxious Weed List 3 Appendices Appendix A Weed Management Strategies NOXIOUS WEED MANAGEMENT PLAN PICEANCE BASIN PROJECT GARFIELD COUNTY, COLORADO INTRODUCTION Antero Resources Piceance Corporation (Antero) proposes to develop a conventional gas field east of Rifle, Garfield County, Colorado. The project is referred to as the Antero Resources Piceance Basin Project and will involve the construction of a test drill pad, access roads, and associated facilities. Approximately twelve (12) additional well pads may be added. The development of the well pads will be constructed in Garfield County, on private land and in public road rights-of-way (ROW). Each well pad will require approximately 1.38 acres in new surface disturbance; if all thirteen (13) well pads are developed, the total surface disturbance would be approximately 17.94 acres. An additional 5 acres in surface disturbance would occur as a result of developing or improving access roads and installing gathering pipelines. The total project surface disturbance associated with the Antero wells is approximately 22.94 acres including well pads, access roads, and gathering pipeline rights-of-way. The well pads will be accessed from existing public roadways and constructed access roads. The project will involve ground disturbance of the entire project area or minor upgrades to access roads. Construction activities associated the well pad(s) and future pipeline(s) would be minor and temporary. Further development of the project area would include a compressor station, associated gathering and transmission pipeline, and access roads. Approximate surface disturbance associated with the additional project activities has not been determined but would follow existing access roads and right-of-way corridors where possible. The Garfield county weed advisory board identified numerous species of noxious weeds or other invasive plants that are known to occur in Garfield County. This noxious weed management plan provides methods Antero and its contractors will follow to prevent the spread of noxious weeds during construction and for the management of the disturbed areas of the project after construction. NOXIOUS WEED SPECIES OF CONCERN Noxious weed and invasive plant species are those that spread into areas where they are not native and typically displace native vegetation or bring about changes in species composition, community structure, and/or ecosystem function. A list of noxious weed species of concern in Garfield County is provided in Table 1. Some specific weeds of concern are; leafy spurge, Canada thistle, spotted knapweed, and Russian knapweed. 1 Antero's Piceance Basin Project, Noxious Weed Management Plan Appendix A provides a description of each of the weeds of concern in Garfield County, with specific management objectives regarding their containment or eradication. Antero is committed to the prevention of the spread of noxious weeds associated with construction. Upon agency request, a noxious weed survey, identifying the location and type of existing weed infestations on or immediately adjacent to the well pads, and proposed access roads will be conducted prior to construction, where access is granted. Approved management procedures will be followed during construction to prevent the spread or re-establishment of weed populations on any areas disturbed during construction. The results of the survey will be made available to the Garfield County weed advisory board, upon request. After the well pad(s) is constructed, Antero is committed to containment of existing stands of noxious weeds, and eradication of new stands occurring within disturbed project areas. MANAGEMENT METHODS Several weed management methods are described in this section including prevention of the spread of weeds, eradication of new infestations, physical control methods such as pulling and mowing, seeding with competitive vegetation, and the use of herbicides for weed control. In general, the use of herbicides has been found to be the most effective and feasible method of weed control, and will be used everywhere except in isolated locations where other methods are necessary. Prevention Prevention is the most effective, efficient, and long-term strategy in the management of noxious and invasive species. Preventing invasions by new plant species and quickly detecting invasions that occur allows for immediate eradication measures to be implemented. Other preventative measures include reestablishing vegetation as quickly as possible in disturbed areas, ensuring that seed supplies are obtained from suppliers who can provide weed -free certified seed mixes, and pressure -washing vehicles and equipment at a sanitary location before they are brought into a work area or in-between work sites if necessary. Contractors may be required to wash all equipment or show proof of equipment washing before entering any of the project states. The inspector will make the decision if pressure -washing is required after passing through an area of noxious or invasive weeds. If areas of noxious weeds are nearly contiguous as might be found along some ROW's, pressure washing each time may not be necessary. Follow up long-term monitoring is also an important preventative measure. Noxious weed monitoring on foot, will be conducted annually for at least three years following construction activities to ensure that noxious and invasive species do not get a foothold along the ROW. Landowner concerns will also be addressed as they arise. 2 Aniero's Piceance Basin Project, Noxious Weed Management Plan Eradication Complete eradication of large areas where infestations are already established may not be possible, as the area is likely to be re -invaded from adjacent lands, unless there are physical barriers that isolate the area. Eradication is most likely possible when the species has just begun to invade and establish itself in a new area, which highlights the importance of early detection and the post -construction monitoring program. Antero will coordinate and cooperate with the landowner and county weed agencies on weed eradication. Table 1 Garfield County Designated Noxious Weed List Scientific Name Common Name Garfield County, CO Cirsium arvense Canada thistle X Cichorium intybus Chicory X Arctium minus Common burdock X Linaria dalmatica Dalmatian toadflax X Centaurea dfusa Diffuse knapweed X Cardaria draba Hoary cress X Cynoglossum ofcinale Houndstongue X Aegilops cylindrica Jointed goatgrass X Euphorbia esula Leafy spurge X Carduus spp. Musk thistle X Crysanthemum leucanthemum Oxeye daisy X Carduus acanthoides Plumeless thistle X Lythrum salicaria Purple Ioosestrife X Centaurea repens Russian knapweed X Elaeagnus angustifolia Russian olive X Tamarix ramosissima Salt cedar X Tamarix parviflora Salt cedar X Onopordum acanthium Scotch thistle X Centaurea maculosa Spotted knapweed X Centaurea solstitialis Yellow starthistle X Linaria vulgaris Yellow toadflax X Source: Garfield County Weed Advisory Board 2005. Physical Control Physical control methods range from manual pulling of individual plants to the use of hand and power tools to uproot, girdle, or cut plants. Hand removal by pulling is appropriate when the plants are large enough that they will not break and leave the roots, which may re -sprout. Mowing or cutting of most weed species is seldom successful as this may stimulate lateral growth below the cut portion. This method can he effective in 3 Antero's Piceance Basin Project, Noxious Weed Management Plan localized or sensitive areas. To be effective, this method must generally be combined with hand application of an herbicide. Competitive Vegetation The use of native plants species to out -compete noxious and invasive species is an effective, long-term weed control method. Noxious weeds will usually grow in disturbed areas reseeded with native vegetation; however, after a few years, these weeds cannot compete and die off. In areas where noxious weeds have been allowed to flourish, the weeds may likely out -compete the native grasses. In these areas, a more vigorous approach will be needed to rid the area of the noxious weeds. The use of native Pure Live Seed (PLS) mixes will help ensure a healthy and strong revegetated site. Herbicides The use of herbicides on noxious and invasive plants can be an effective means of control. If herbicides are used, it will be on a plant by plant basis by hand application with backpack sprayers to avoid overspray to non -target species in adjacent plant communities. Broadcast spraying will not be conducted, and spraying will only take place when wind speeds are less than 8 miles per hour. This limits the use of herbicides to isolated stands of plants when individual plants are relatively small is size. Appropriate herbicides would be target -specific and have a short residue time in the environment. Application of all herbicides would be performed by a licensed and certified applicator. Herbicides would not be used within 100 feet of any wetland area or waterbody. Use of herbicides within 100 feet of a wetland or waterbody would be restricted to limited spot treatments. Herbicide options for each noxious weed of concern are listed in Appendix A. 4 APPENDIX A WEED MANAGEMENT STRATEGIES Appendix A Weed Management Strategies Canada Thistle (Cirsium arvense): An introduced aggressive perennial with highly developed creeping horizontal roots. Produces from both seed and roots. Flower heads are approximately 0.5 inches in diameter and purple to white in color. Typical plant grows from 1 to 3 feet tall. It is one of the most widespread and economically damaging noxious weeds in Colorado. Infestations are found in cultivated fields, riparian areas, pastures, rangeland, forests, lawns and gardens, roadsides, and in waste areas. Management Objective: Containment Integrated Treatment: Chemical: 2,4-D@ 2 lbs A.E./acre prior to bud; Dicamba @ 2 lbs A.E./acre in rapid growth stage; Curtail plus 2,4-D @. 2 lbs- .25 A.E./acre plus 1.0-1.5 A.E./acre, respectively, prior to bud or late fall; Glyphosate @ .5 to 1.0 A.E./acre. Biological: Three insects currently available, (Canada thistle stem weevil; Canada thistle bud weevil; Thistle stem gall fly). It is best to release a complex of insects. Cultural: Maintain soil fertility and moisture at optimum levels to favor grass growth. Physical/Mechanical: Hand pulling is not effective. Cultivation will reduce density if done repeatedly every three to four weeks. Tillage generally ineffective. Chicory (Cichorium intybus): A simple perennial, reproduces only by seed. The plant has a deep fleshy root and tufted basal leaves that resemble those of a dandelion. The stem is multi- branched and can reach over five feet tall. The flowers are bright blue, purple, or occasionally white, and occur along the stems of plants. Chicory is scattered throughout western Garfield County. Management objective: Containment Integrated treatment: Chemical: Contact Garfield County Vegetation Management or a licensed applicator for specific recommendations. Biological: Close grazing by sheep will control the chicory in pastures. Cultural: Re -seed disturbed areas adjacent to chicory infestations with appropriate perennial grasses. Physical/Mechanical: None available. Common Burdock (Arctium minus): An invasive biennial introduced from Europe. Upon germination it produces a rosette which winters over. The following spring it bolts and produces a tall erect stem with large basil, cordate, hairy leaves. The flowers are purple in color and approximately 1/2 to 3/4 inch in diameter. The flower head is covered with many slender hooked spines, which readily attach to clothing or passing animals. Management Objective: Containment Integrated Treatment: Chemical: Best results usually obtained in rosette stage. 2,4-D @ .75 to 1 oz. water or 1 quart/acre. Roundup Ultra @ 1.5 oz/gal or 1 quart/acre; Curtail @ 1.5 oz/ gal of A-1 Appendix A, Weed Management Strategies water or 2 quarts/acre; Crossbow @ 1.5 oz/gal of water or 2 quarts/acre. Use nonionic surfactant @ 1 quart/acre. Biological: No effective biological agent known. Cultural: Minimize soil disturbances, encourage desirable plant growth. Livestock grazing usually spreads plant distribution. Physical/Mechanical: Top growth removal through mowing or cutting is effective as is pulling or digging out the plant at flowering or early seed formation. Dalmatian toadflax (Linaria dalmatica): A member of the Figwort family, it was introduced as an ornamental from Europe. It is a creeping perennial with stems from 2 to 4 feet tall. This plant is especially adapted to arid sites and can spread rapidly once established. Because of its beep, extensive root system and heavy seed production, this plant is difficult to manage. Management objective: Containment Integrated Treatment: Chemical: Contact Garfield County Vegetation Management or a licensed applicator for specific recommendations. Biological: The defoliating moth, Calophasia lunula, has been release on Dalmatian and yellow toadflax. It may defoliate up to 20% of the leaves of the plant. Cultural: Reseed disturbed areas adjacent to toadflax infestations with appropriate perennial grasses. Physical/Mechanical: Repeated mowing 2-3 times per year will slow spread and reduce seed production. Education: The key to Dalmatian toadflax management is to create an awareness among homeowners, nurseries, landscapers, and landscape architects that Dalmatian toadflax is a noxious weed and therefore should not be specified in planting, sold in nurseries or planted in home gardens or large-scale landscape projects. Diffuse Knapweed (Centaurea diffusa): An invasive biennial, annual, or short Lived perennial. The plant grows from 1-3 feet in height with a deep tap root. Urn -shaped flower heads are 3/16 to 1/4 inches in diameter. Flowers are generally white, with distinctive spiny bracts. Leaves are filiform and deeply divided. Seed viability extends 10 years plus, adding complexity to control. Management Objective: Eradicate Integrated Treatment: Chemical: Picloram @ .25 to .5 A.E./acre; Clopyralid @ .25 to .5 A.E./acre. Chemical control is considered the most cost effective means of control. Biological: Two seed head flies, Urophora affinis and U quadrifasciata, are available. They reduce seed production. A root -boring moth, Agapeta zoegana, causes considerable damage to roots. Cultural: Reseeding of disturbed sites with fasts growing grasses helps prevent diffuse knapweed establishment. Physical/Mechanical: Small infestations can be controlled with hand pulling, if done at least three times a year for several years. Any ground disturbance causes increased plant density. Mowing, while reducing some seed production, is not a viable alternative. A-2 Appendix A, Weed Management Strategies Hoary Cress (Cardaria draba): This plant also known as whitetop, is a creeping perennial, which reproduces by seed and creeping roots. The extensive root system spreads vertically and horizontally, with frequent shoots arising from the rootstock. Hoary cress is one of the earliest perennial weeds to emerge in the spring, producing flowers in May or June. It grows in waste places, cultivated fields, and pastures, and is capable of vigorous growth. Management Objective: Containment Integrated Treatment: Chemical: Metsulfuron @ .12 to .45 oz A.E./acre, applied in spring before flower or in late fall after sufficient moisture has fallen to stimulate over -wintering growth. Picloram is not effective on this plant. Biological: No known biological control is known. Cultural: Mowing or cultivation effectiveness will be increased if other plants like perennial native grasses or alfalfa are seeded in the hoary cress stand as competitors. Maintain range and pasture in good condition. Promote healthy grass growth through proper irrigation and fertilization. Do not overgraze. Physical/Mechanical: Removal of top growth is somewhat effective. Repeated treatments may reduce seed production and spread. Houndstongue (Cynoglossum offincinale): An introduced biennial which grows 1-4 feet in height. Leaves are alternate, up to 12 inches long and 3 inches wide. Leaves are entire, not lobed or toothed. Flowers are a deep reddish purple, small and exist on tenninal stems. The fruit is a nutlet approximately 1/3 of an inch long, with many small curved spines, which readily attach to animals or clothing. The plant contains lethal levels of alkaloids, which cause delayed liver disease in animals that consume sufficient amounts. Management Objective: Containment Integrated Treatment: Chemical: Tordon 22K @ 1 oz/gallon of water or 1 quart/acre; or Clarity at the same rate. Need to add a nonionic surfactant @ 1 quart/acre, or .32 oz/gallon of water. Biological: None know to be effective. Cultural: Re -seed disturbed sites with fast growing native grasses. Maintain range and pasture in good condition. Promote healthy grass growth through proper irrigation and fertilization. Do not over graze. Physical/Mechanical: Houndstongue is a prolific seed producer, and the seeds are readily spread by their ability to stick to wildlife and domestic animals. Physical removal of the plan at flowering or in early seed formation, by pulling or digging, will break the cycle of the plant. Jointed Goatgrass (Aegilops cylindrical): A non-native grass introduced from Turkey in the late 1800s. It is a winter annual, reproducing by seed and grows 15 to 30 inches tall in erect stems which branch at the base to give the plant a tufted appearance. The leaf blades are 1/8 to 1/4 inch wide (usually smooth) with small auricles at the base. The root system is shallow and fibrous. The most distinguishing characteristic is the 2 to 4 inch jointed, cylindrical, balanced A-3 Appendix A, Weed Management Strategies seed head. Jointed goatgrass is becoming an increasing problem in the wheat land areas of eastern Colorado. Management objective: Containment Integrated treatment: Chemical: Roundup @ 4-6 oz. per acre applied in late fall or early spring, where desirable perennials are to be retained. If desirable perennials are not present, treat with Roundup @ 1 pint per acre applied while plant is green and growing and prior to seed development. Biological: None known. Cultural: Early livestock grazing can reduce seed production. Physical/Mechanical: Repeated tillage, prior to seed development, will reduce plant density. Fire is also effective in removing seeds. Mowing is not effective, as plants will produce below the severed stem. Mowing in the fall or after seed maturity is a primary factor in spreading contaminated seed. Leafy Spurge (Euphorbia esula): An invasive perennial, difficult to control, and requires long term commitment to achieve control. The plant grows 16 to 22 inches in height. The flowers are small, inconspicuous and surrounded by a pair of yellow -green heart shaped bracts. Seeds are small capsules, which float on water, and are viable for 8- 10 years. The root system when established will be 26-30 feet deep, with numerous laterals. Management Objective: Eradicate Integrated Treatment: Chemical: Piclorarn @ 1 pint/acre combined with 2 quarts of 2,4-D, applied at flowering time (Research indicates that this treatment should result in 85 % success after 4 years of successive treatment.) Picloram @ 1 quart/acre plus 1 quart of 2,4-D gives good fall treatment results. Plateau @ 10- 12 oz/acre plus crop oil (See label). Biological: Sheep or goats will graze leafy spurge. If livestock graze leafy spurge after seed formation, gold the animals in a corral for at least seven days before removing them to an uninfested are to avoid seed spread. Several flea beetles (Aphthona spp.) are available from the Colorado Department of Agriculture Insectary in Palisade. These insects are available upon request at no charge to the public. Also available from the Insectary are the root boring beetle (Oberea erythrocephala), a stem and root crown mining long -horned beetle, and Spurgia esulae, a shoot tip gall midge. Cultural: Any activity that encourages vigorous grass growth is very important. Overgrazing stresses grasses that makes them less competitive to leafy spurge. Physical/Mechanical: Mowing leafy spurge at 14 to 21 day intervals may cause higher susceptibility to fall applied herbicides. Musk Thistle (Carduus nutans): A non-native biennial. Leaves are dark green with a light green mid -rib and white margins. Flowers are solitary, 1.5 to 3 inches in diameter, purple with a distinctive flat top appearance. A-4 Appendix A, Weed Management Strategies Management Objective: Containment Integrated Treatment: Chemical: Contact Garfield County Vegetation Management or a licensed applicator for specific recommendations. Biological: Seedhead weevil (Rhinocyllus conicus); larvae destroy developing seed but are not 100 percent effective by themselves. Herbicides can be combined with weevils if the insects area allowed to complete their life cycles. Another weevil, Trichosirocalus hooridus, attacks the crown area of musk thistle rosettes and weakens the plant before it bolts. This weevil has reduced stand density in areas where it has become well established. A leaf feeding beetle, Cassidia rubiiginosa, causes considerable damage by skeletonizing leaves. It is recommended to release more than one type of insect on a weed since each type may work on different part of the plant. Cultural: Musk thistle, like other biennial thistles, thrives on disturbance. The best management is to minimize disturbance. If it does occur, be certain to revegetate with competitive perennial grasses. Physical/Mechanical: The most effective mechanical control is to hand pull this plant prior to flowering. This can be unrealistic on large acreages or when the ground is very dry. Another option is to use a shovel to cut the root below the surface of the soil, taking care not to disturb the soil more than necessary. If this is done prior to flowering the plan can be left in place after it is cut. If it has already flowered the plant should be removed and placed in a bag and disposed of. Mowing is not effective on this species unless repeated numerous times throughout the growing season since musk thistle will flower and produce seed even after one or two mowings. Oxeye Daisy (Chrysanthemum leucanthemum): An introduced perennial ornamental that is an aggressive competitor. It forms dense patches in meadows, especially in areas grazed by cattle. Flowers are white with a bright yellow center. Leaves are spiral, sessile, and narrow lanceolate. They decrease in size from the ground to the flower head, as contrasted to "Shasta Daisy" which maintains leaf size up and down the stem. Roots are shallow with numerous branched rhizomes and strong adventitious roots. Management Objective: Contain Integrated Treatment: Chemical: The plant is resistant to 2,4-D based herbicides, unless used at or above the 5 lbs A.E./acre. Picloram @ 1.5 pint with 1 quart of 2,4-D/acre has been effective in some research trials. Studies also indicate that application of nitrogen fertilizers at rates of 80 -plus pounds/acre is as effective as chemical herbicide treatments. Biological: None currently available. Cultural: None available. Physical/Mechanical: No information available. Education: the key to oxeeye daisy management is to create an awareness among homeowners, nurseries, landscapers, and landscape architects that oxeeye daisy is A-5 Appendix A. Weed Management Strategies a noxious weed and therefore should not be specified in planting, sold in nurseries or planted in home gardens or large-scale landscape projects. Plumeless Thistle (Carduus acanthoides): An invasive winter annual or biennial, which closely resembles Musk Thistle. Stems grow from 1-4 feet in height. Stem leaves are alternate and blend into the stem. Flower heads are a purplish pink, about 1-2 inches in diameter. Under the flower heads exist multiple rows of narrow, sharp spines, which support the pappus. The flower lacks the distinctive flat-topped appearance of Musk Thistle. Management Objective: Containment Integrated Treatment: Chemical: Contact Garfield County Vegetation Management or a specific recommendations. Biological: Seedhead weevil (Rhinocyllus conicus) Cultural: The best management is to minimize disturbance competitive perennial species. Physical/Mechanical: Mowing is generally not effective on plumeless due to the plant's capacity for rapid re -growth. Hand cutting is not effective unless there are repeated follow-up treatments. Hand cutting should only be conducted if there is a commitment to follow-up efforts. Plumeless tends to branch out where it is cut and then it re -flowers. Pulling plumeless can be very effective, especially if done after a light rain. Hand pulling, with a good set of gloves, is preferable to shoveling. Shoveling disturbs the ground this creating a potential seedbed for future infestations. licensed applicator for and revegetate with Purple Loosestrife (Lythrum salicaria): Also known as European wand loosestrife (Lythrum virgatum). An introduced perennial ornamental, commonly associated with waterways. The flower is attractive, with purple flowers vertically arranged on a tall spike. Leaves are lance shaped and notched at the base. They are attached to the stalk without stems in an alternate, opposite, or whorled pattern. A single plant may produce up to 120,000 seeds per stem, which forms a seed bank that is viable for 5-10 years. Control is difficult to achieve, due to association with water. Management Objective: Eradicate Integrated Treatment: Chemical: Glyphosate @ 4 pints/acre applied early to late bloom; 2,4-D @ 1-2 quarts/acre, applied early bud to early bloom; Triclopyr @ .5 to 2 Gal/acre, bud to mid -bloom. Biological: Biological control may eventually bring weed populations under control, but it will not eliminate or prevent the spread of noxious weeds. Cultural: None available, Physical/Mechanical: Methods include hand pulling, mowing, and flooding. Hand pulling is effective when infestations are detected early. The root system must be completely removed, since the root sections can sprout and form new plants. Education: the key to purple loosestrife management is to create an awareness among homeowners, nurseries, landscapers, and landscape architects that purple A-6 Appendix A, Weed Management Strategies loosestrife is a noxious weed and therefore should not be specified in planting, sold in nurseries or planted in home gardens or large-scale landscape projects. Russian Knapweed (Centaurs ripens): A competitive invasive perennial that rapidly establishes dense monocultures. It is allelopathic in nature and detrimental to the health or horses. It has a deep and complex root system which extends vertically 15 to 30 feet with many horizontal rhizomes. The roots have a characteristic black sheath, which is most evident immediately below the ground surface. Stems are erect and open, standing 1-3 feet in height. Flowers are pink to lavender approximately 1/4 to 1/2 inch in diameter. Management Objective: Contain Integrated Treatment: Chemical: Curtail @ 3 quarts/acre or Redeem @ 3 pints/acre applied bud to early flower; Picloram @ .38 lb A.E./acre, pre flower and fall treatment. Biological: No effective biological agent known. Cultural: Russian knapweed tends to from monocultures by eliminating other plants. Therefore, sowing desirable plant species is necessary after the weed is controlled. Research indicates that the native grasses, streambank wheatgrass and thickspike wheatgrass will establish in an area after Russian knapweed is suppressed with herbicides. If the Russian knapweed stand is not too old, and grasses are still present, stimulating grass growth by irrigation (where possible) should increase grass competition with knapweed and keep it under continual stress. Physical/Mechanical: Repeated mowing combined with herbicide application will gradually stress the plant. Russian Olive (Elaeagnus angustifolia): A hardy, fast-growing tree from Europe, Russian Olive has been promoted from windrow and ornamental plantings. This tree may reach heights from 10 to 25 feet. Trunks and branches are armed with 1 to 2 inch woody thorns. The leaves are covered with small scales which give the foliage a distinctive silvery appearance. Very common in Western Garfield County, especially along the Colorado River between Silt and Rifle. Chemical: Contact Garfield County Vegetation Management or a licensed applicator for specific recommendations. Biological: None available. Cultural: Plant native trees or less aggressive introduced trees. In riparian areas establish native riparian vegetation. Physical/Mechanical: Small trees may be controlled mechanically by using an appropriate tool or shovel. Salt Cedar (Tamarix ramosissima and T. parviflora): A deciduous or evergreen shrub or small tree, 5 to 25 feet tall. It has a. wide range of tolerance to saline and alkaline soil and water. It copes with high concentrations of dissolved solids by absorbing them through its roots and excreting salts through glands in its stem and leaves. The excreted salts eventually from a saline crust on the soil. A single plant of salt cedar will use about 200 gallons of water per day while it A-7 Appendix A, Weed Management Strategies is actively growing. Introduced from Eurasia, tamarisk is widespread in Garfield County, along the Colorado River from Glenwood Canyon to the Mesa County Line. Chemical: Contact Garfield County Vegetation Management or a licensed applicator for specific recommendations. Biological: There are experimental projects being conducted in a few areas in the West involving the release of mealybugs and leafbeetles. These are not cleared for general release. The recent listing of the Southwestern Willow Flycatcher (a native species that nests in salt cedar) under the Endangered Species Act has challenged efforts to move forward with release of insects for biocontrol. Cultural: Establish native riparian vegetation. Physical/Mechanical: Historical saltcedar management projects have included root plowing and raking, dozing, mowing, and prescribed burning. These methods provide only short-term benefits and are labor intensive. Scotch Thistle (Onopordum acanthium): Non-native biennial. Leaves and stems have a silvery, gray -green color. The flower is purple, 1-2 inches in diameter. Plant grows in dense stands and will attain heights of 6-8 feet tall. Management Objective: Eradicate Integrated Treatment: Chemical: Contact Garfield County Vegetation Management or a licensed applicator for specific recommendations. Biological: None currently available. Cultural: Reseed disturbed areas with appropriate perennial grasses. Physical/Mechanical: Digging the plant at the rosette stage is effective. Spotted Knapweed (Centaurea maculosa): A biennial or short-lived perennial that has been introduced. It is an aggressive invader, which seriously degrades wildlife habitat, reduces density of desirable plants, and degrades water quality. The flower is purple to pink and is characterized by distinctive spotted bracts below the flower head. Plants grow from 8 inches to 4 feet in height. Difficult to control because of seed longevity and viability. Will germinate throughout the growing season. Management Objective: Eradicate Integrated Treatment: Chemical: Clopyralid @ 3 quarts/acre in the bud to bolt stage; Picloram @ .25 Ib A.E./acre while the plant is green; Dicamba @ 1 lb A.E./acre combined with 2,4- D @ 2 lbs A.E./acre, applied at bud to bolt stage. Biological: Two seed head flies (Urophora affinis and U guadrifasciata) are capable of reducing seed production by 50%. Root mining insects as well as fungal and bacterial pathogens have shown some promise, but overall it recommended that any biological control be combined with other integrated methods for best results. Cultural: If desirable grass competition is evident in spotted knapweed stands, judicious herbicide application that dos not injure grasses may release them to compete effectively with the weeds. Irrigation may help stimulate grass competition in A-8 Appendix A, Weed Management Strategies these cases. Seeding suitable perennial grasses necessary to prevent weed re - invasion. Physical/Mechanical: None available. Yellow Starthistle: (Centaurea solstitialis): An introduced winter annual that is a member of the knapweed family. Flowers are bright yellow and made up of many individual flowers and bracts. Each flower is armed with a ring of stout 1-2 inch spines, which radiates around the flower head. Individual plants can produce up to 150,000 seeds per plant, with 95% seed viability. Germination begins in the late fall and continues through late summer making control efforts difficult. The leaves are largely linear, growing along the stem. The leaves and stems are covered with a silky pubescent, which gives them a silver-gray colored appearance. Management Objective: Eradicate Integrated Treatment: Chemical: Picloram @ .25 A.E./acre prior to flower; Clopyralid @ .5 to .375 Ib A.I./acre prior to flower. (It is noted that applications of Curtail @ 3 quarts/acre or Redeem give adequate control through the flowering stage). Biological: Some success has been achieved with seed weevils and seed flies. In Garfield County, hope is to detect and eradicate any infestations of starthistle before biocontrols are necessary. Cultural: Vigorous competitive grass is essential to maintain a plant community's resistance to starthistle invasion, Physical/Mechanical: Mowing or cutting starthistle is rarely effective. Yellow Toadflax (Linaria vulgaris): An introduced perennial ornamental that is highly competitive. Flowers are bright yellow with orange centers, resembling the physical appearance of Snap Dragons. Leaves are narrow, linear, and pointed on both ends. One plant can produce up to 500,000 seeds. Seed viability is + 10 years. Management Objective: Eradicate Integrated Treatment: Chemical: Herbicide success highly variable due plant genetics and soil variation. Treatment of choice involves the application of Picloram @ 1 lb A.E./acre in the fall; Dicamba @ 4 lbs A.E./acre. Use of a surfactant improves success. Biological: One insect species Calophasia lunula a defoliating moth has been release on yellow toadflax. It may defoliate up to 20 percent of the leaves. Cultural: Attempt to maintain competitive communities of desirable species. Re -seed any open ground with perennial grasses to prevent invasion by other weed species. Physical/Mechanical: Digging and pulling where feasible, can provide effective control of toadflax if conducted annually for 10 to 15 years. Education: the key to yellow toadflax management and other escaped ornamentals is to create an awareness among homeowners, nurseries, landscapers, and landscape architects that Yellow toadflax is a noxious weed and therefore should not be specified in planting, sold in nurseries or planted in home gardens or large-scale landscape projects. A-9