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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.garfield-county.com X LIMITED IMPACT REVIEW 0 LIMITED IMPACT REVIEW [AMENDMENT] GENERAL INFORMATION (Please print legibly) D Name of Property Owner: EnCana Oil & Gas (USA) Inc. D Mailing Address: 2717 County Road 215, Suite 100 Telephone: (970) 285-2825 D City: Parachute State: CO Zip Code: 81635 Cell: (970) 319-8890 D E-mail address: renata.buschRencana.com FAX: (970) 285-2691 D Name of Owner's Representative, if any, (Attorney, Planner, Consultant, etc): D Mailing Address: Telephone: ( ) D City: State: Zip Code: Cell: ( ) D E-mail address: FAX: ( ) D Requested Use from Table 3-501 or 3-502: Storage: Supplies, Machinery, Equipment or Products D Street Address / General Location of Property: Northeast of the City of Rifle, CO South of 1-70, off CR 331 D Legal Description: Section 11, Township 7 South, Range 92W D Assessor's Parcel Number: 2 4 0 1— 1 1 2— 0 0— 2 1 9 D Existing Use: residence, agricultural production, existing well pad site; F11 E D Property Size (in acres) 3.12 Zone District: Rural Last Revised 12/29/08 I. GENERAL SUBMITTAL REQUIREMENTS [The following general application materials are required for all Limited Impact Review Applications in Garfield County. Application materials and review standards that are specific to an individual use (Community Facility, Parking Lot, Library, etc,) are detailed in Sections 3-301 of Article III and Article VII of the Unified Land Use Resolution (ULUR) of 2008.] A. Submit a completed and signed Application Form, an application fee, and a signed Agreement for Payment form. The signed Application Form, and signed Agreement for Payment form, is provided in Attachment 1. The application fee will be paid upon submittal of this application. B. A narrative explaining the purpose of the application and supporting materials that address the standards and criteria found in Articles III and VII of the Unified Land Use Resolution of 2008. A detailed narrative for this project is provided in Attachment 2. Regulatory provisions 7-810 and 7-821 required via the Pre -Application Conference Summary, along with supporting materials that address the standards and criteria can be found throughout the binder in their respective attachment tabs. C. Copy of the deed showing ownership. Additionally, submit a letter from the property owner(s) if the owner is being represented by another party other than the owner. If the property is owned by a corporate entity (such as an LLC, LLLP, etc.) Please submit a copy of recorded "Statement of Authority" demonstrating that the person signing the application has the authority to act in that capacity for the entity. A copy of the deed showing ownership is provided in Attachment 4. The copy of recorded "Statement of Authority" is provided in Attachment 1, directly behind the Payment Agreement Form D. Submit a copy of the appropriate portion of a Garfield County Assessor's Map showing the subject property and all public and private landowners adjacent to your property (which should be delineated). In addition, submit a list of all property owners, private and public, and their addresses adjacent to or within. 200 ft. of the site. This information can be obtained from the County Assessor's Office. You will also need the names (if applicable) of all mineral interest owners of the subject property, identified in the County Clerk and Recorder's records in accordance with §24-65.5-101, et seq. (That information may be found in your title policy under Exceptions to Title). A Garfield County Assessor's Map showing the subject property, a list of adjacent property owners and their addresses, as well as a list of names indicating mineral interest owners is provided in Attachment 4. E. Vicinity map: An 8'/z x 11 vicinity map locating the parcel in the County. The vicinity map shall clearly show the boundaries of the subject property and all property within a 3 -mile radius of the subject property. The map shall be at a minimum scale of 1"=2000' showing the general topographic and geographic relation of the proposed land use change to the surrounding area for which a copy of U.S.G.S. quadrangle map may be used. The Vicinity map is provided in Attachment 1. F. A copy of the Pre -Application Conference form from the original Pre - Application Conference. A copy of the Pre -application Conference form is provided at the end of the Application Tab. G. Submit 3 copies of this completed application and all the required submittal materials to the Building and Planning Department. Staff will request additional copies once the application has been deemed technically complete. Three copies of completed application and all the required submittal materials will be provided to the Building and Planning Department. Additional copies will be delivered once the application has been deemed technically complete. I. Limited Impact Review Process The following section outlines and describes the Limited Impact Review process for the variety of uses that are governed by the Board of County Commissioners by the Unified Land Use Resolution of 2008 (ULUR). Please refer to Articles III and VII in the regulations themselves for a higher level of detail. [The following process is required for applications for land use changes that are subject to Limited Impact Review as defined in Table 3-501 or 3-502 in Article III.] A. Outline of Process. The Limited Impact Review process shall consist of the following procedures: 1. Pre -Application Conference (4-103 (A)) 2. Application (4-103 (B)) 3. Determination of Completeness (4-103 (C)) 4. Evaluation by the Director/Staff Review (4-103 (E)) 5. Public Hearing and Decision by the Board of County Commissioners (4-103 (G)) B. Submittal Materials: The following materials shall be submitted with a Limited Impact Review application and are more fully defined in Section 4-502 of Article IV of the ULUR. The Director may waive or alter any of these requirements if they are determined to be inappropriate or unnecessary to determining if the application satisfies applicable standards. 1. Application Form and Fees 2. Site Plan (4-502(C)(3)) 3. Land Suitability Analysis (4-502(D)) 4. Impact Analysis (4-502(E)) 11. Limited Impact Review Amendment Process Any proposal to change conditions of approval or a site plan approved under these Regulations as a Limited Impact Review permit shall require application to the Director for Amendment of a Limited Impact Permit Approval. The Director shall review the application to determine whether the proposed change constitutes a substantial change to the Limited Impact Permit approval pursuant to Section 4-107 of Article IV. A. Outline of Process. The review process- for a proposed Amendment of an Approved Limited Impact Review shall consist of the following procedures. 1. Pre -Application Conference (4-103 (A)) 2. Application (4-103 (B)) 3. Determination of Completeness (4-103 (C)) 4. Evaluation by the Director/Staff Review (4-103 (E)) 5. Decision by Director (4-104(6)(5)) 6. Public Hearing and Decision by the Board of County Commissioners (4-103 (G)) B. Submittal Materials: The following materials shall be submitted with a Limited Impact Review Amendment application and are more fully defined in Section 4-502 of Article IV of the ULUR. The Director may waive or alter any of these requirements if they are determined to be inappropriate or unnecessary to determining if the application satisfies applicable standards. 1. Application Form 2. Supporting documents necessary to evaluate the proposed revision(s) 3. Written Statement of proposed amendrnent(s) which includes how the requested amendment does not result in a substantial change defined here: Substantial Change. A change to and existing approved land use resulting in one or more of the following: 1. A change in land use category. 2. A change in site design which increases a. The number of dwelling units. b. The maximum square footage of structures less than 10,000 sq. ft. over 100% and structures over 10,000 sq. ft. by 10%, if a maximum has been specified in a permit or approval. c. Projected traffic such that a highway access permit or an amendment to a highway access permit is required as a result of the change. d. The size of the land which is the subject of the permit or approval 3. A change in land use which creates or increases the incompatibility of the use. I have read the statements above and have provided the required attached information which is • - t and accura to -the -b - - ..f my knowledge. (Signature of operty Owner Date GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT FEE SCHEDULE Garfield County, pursuant to Board of County Commissioners ("Board") Resolution No. 98-09, has established a fee structure ("Base Fee") for the processing of each type of subdivision and land use applications. The Base Fee is an estimate of the average number of hours of staff time devoted to an application, multiplied by an hourly rate for the personnel involved. The Board recognized that the subdivision and land use application processing time will vary and that an applicant should pay for the total cost of the review which may require additional billing. Hourly rates based on the hourly salary, and fringe benefits costs of the respective positions combined with an hourly overhead cost for the office will be used to establish the actual cost of County staff time devoted to the review of a particular project. Actual staff time spent will be charged against the Base Fee. After the Base Fee has been expended, the applicant will be billed based on actual staff hours accrued. Any billing shall be paid in full prior to final consideration of any land use permit, zoning amendment or subdivision plan. If an applicant has previously failed to pay application fees as required, no new or additional applications will be accepted for processing until the outstanding fees are paid. Checks, including the appropriate Base Fee set forth below, must be submitted with each land use application, and made payable to the Garfield County Treasurer. Applications will not be accepted without the required application fee. Base Fees are non-refundable in full, unless a written request for withdraw from the applicant is submitted prior the initial review of the application materials. Applications must include a Payment Agreement Form ("Agreement") set forth below. The Agreement establishes the applicant as being responsible for payment of all costs associated with processing the application. The Agreement must be signed by the party responsible for payment and submitted with the application in order for it to be accepted. The following Base Fees shall be received by the County at the time of submittal of any procedural application to which such fees relate. Such Base Fees shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board for the consideration of any application or additional County staff time or expense not covered by the Base Fee, which have not otherwise been paid by the applicant to the County prior to final action upon the application tendered to the County. 6 GARFIED COUNTY BUILDING AND PLANNING DEPARTMENT BASE FEES TYPE OF LAND USE ACTION Vacating Public Roads & Rights -of -Way Sketch Plan Preliminary Plan / Conservation Subdivision Preliminary Plan Amendment Final Plat Final Plat Amendment / Correction Plat Combined Preliminary Plan and Final Plat Minor Exemption / Amendment Major Exemption /Amendment Rural Land Development Option Exemption / Amendment General Administrative Permit Floodplain Development Permit Pipeline Development Plan / Amendment Small Temporary Employee Housing Minor Temporary Employee Housing Limited Impact Review / Amendment Major Impact Review / Amendment Rezoning: Text Amendment Rezoning: Zone District Amendment Planned Unit Development (PUD) / Amendment Comprehensive Plan Amendment Variance Interpretation Takings Determination Planning Staff Hourly Rate • Planning Director • Senior Planner • Planning Technician • Secretary County Surveyor Review Fee (includes review of Amended Plats, Final Plats, Exemption Plats) Mylar Recording Fee BASE FEE $400 $325 $675 + application agency review fees and outside consultant review fees, as authorized pursuant to the Regulations, such as the Colorado Geologic Survey $325 $200 $100 $1,075 $300/$300 $400 / $300 $400/$300 $250 $400 $400 / $300 $50 $250 $400/$300 $525 / $400 $300 $450 $500 / $300 $450 $250 $250 $250 $50.50 $40.50 $33.75 $30.00 Determined by Surveyor$ $11 — 1St page $10 each additional page 7 The following guidelines shall be used for the administration of the fee structure set forth above: 1. All applications shall be submitted with a signed Agreement for Payment form set forth below. 2. County staff shall keep accurate record of actual time required for the processing of each land use application, zoning amendment, or subdivision application. Any additional billing will occur commensurate with the additional costs incurred by the County as a result of having to take more time that that covered by the base fee. 3. Any billings shall be paid prior to final consideration of any land use permit, zoning amendment, or subdivision plan. All additional costs shall be paid to the execution of the written resolution confirming action on the application. 4. Final Plats, Amended or Corrected Plats, Exemption Plats or Permits will not be recorded or issued until all fees have been paid. 5. In the event that the Board determines that special expertise is needed to assist them in the review of a land use permit, zoning amendment, or subdivision application, such costs will be borne by the applicant and paid prior to the final consideration of the application. All additional costs shall be paid prior to the execution of the written resolution confirming action on the application. 6. If an application involves multiple reviews, the Applicant shall be charged the highest Base Fee listed above. 7. Types of 'Procedures" not listed in the above chart will be charged at an hourly rate based on the pertinent planning staff rate listed above. 8. The Planning Director shall establish appropriate guidelines for the collection of Additional Billings as required. 8 GARFIELD COUNTY BUILDING AND PLANNING DEPARTMENT PAYMENT AGREEMENT FORM (Shall be submitted with application) GARFIELD COUNTY (hereinafter COUNTY) and EnCana Oil & Gas (USA Inc. (EnCana) Property Owner (hereinafter OWNER) agree as follows: 1. OWNER has submitted to COUNTY an application for F11E Tank Storage Yard (Limited Impact Review) (hereinafter, THE PROJECT). 2. OWNER 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. OWNER 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. OWNER agrees to make payment of the Base Fee, established for the PROJECT, and to thereafter permit additional costs to be billed to OWNER. OWNER agrees to make additional payments upon notification by the COUNTY when they are necessary as costs are incurred. 4. The Base Fee shall be in addition to and exclusive of any cost for publication or cost of consulting service determined necessary by the Board of County Commissioners for the consideration of an application or additional COUNTY staff time or expense not covered by the Base Fee. If actual recorded costs exceed the initial Base Fee, OWNER shall pay additional billings to COUNTY to reimburse the COUNTY for the processing of the PROJECT mentioned above. OWNER 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. PROPERTY OWNER (OR AUTHORIZED REPRESENTATIVE) C ,JtdA/�G25 Signatu Renata Busch Print Name OV -02.52-07 Date Mailing Address: 2717 County Road 215, Suite 100 Parachute, CO 81635 9 -11IIIl(fidti,lt14:4r411LI1#1,.NERO.111III ReceptlonD: 760312 1211812008 03:14:00 PM Jean Rlberico 1 of 2 Rao Faa:$11.00 Doc Fee:0.00 GARFIELD COUNTY CO STATEMENT OF AUTHORITY Pursuant to C.R.S. §3U -3O-172, the undersigned executes this Statement of Authority on behalf of EnCana Oil & Gas (USA) Inc., a corporation (corporation, limited liability company, general partnership, registered limited liability partnership, registered limited liability limited partnership, limited partnership association, government agency, trust or other), an entity other than an individual, capable of holding title to real property (the "Entity"), and states as follows: The name of the Entity is EnCana Oil & Gas (USA) Inc, and .is formed under the laws of the State of Delaware. The mailing address for the Entity is 370 17" Street, Suite 1700; Denver, CO 80202. The nacre and/or position of the person(s) authorized to execute instruments conveying, encumbering, or otherwise affecting title to real property on behalf of the Entity is/are Brenda Linster, Kent Lindberg, Renata Busch, Brett Crabb, Jason Eckman, Chris Putnam and Khem Suthiwan. The limitations upon the authority of the person named above or holding the position described above to bind the Entity are as fol lows: sign Garfield County permits including, but not limited to Special Use Permits; Pipeline Development Plan Administrative Permits; Major and Minor Permits and small Facility Checklists for Temporary Employee Housing; grading permits; building permits; ISDS permits; utility installation permits; driveway permits; major Impact Permits; Limited Impact Permits; amd Administrative Permits. (if no limitations, insert "None") Other matters concerning the manner in which the Entity deals with any interest in real property are: (if no other matter, leave this section blank) 1111 Ka 112 h gr5A30,6,51.111 Kitt III 11 1 Recept.iont$: 760312 12,10/2000 03.14,00 PM Ju.r, Albwrico 2 of 2 Rec Feer$11.00 Doc Fee:0 00 GARFIELD COUNTY CO Page 2 of Statement of Authority EXECUTED this • day of Ei16)(1 200, STATE OF Signature: Name(typed or printed: Title (if any): 0)1(41.6L_ )SS. COUNTY OF JYr rr) Theinstrument .foreooing was acklowledoed before mc this day of . , 2008 by . on behalf of a Witness my hand and official seal. , . ... .. _ (1 6.7L-1- ... V12 ' V.:t (ti My rommOEV11121 itill/mcapires: ,i-,.. 1 . --- sT,,,e...0.°••". 9.1-1, , (Notary tsub lc!) is 40 • cc: /p,FtY°. lf. 11/38 d : %.,‘ 0 . . • a 7,..- :. puiltv-‘.V4. s...tp • tlp s1:4 4 •• ... .cie GARFIELD COUNTY Building & Planning Department 108 8th Street, Suite 201 Glenwood Springs, Colorado 81601 Telephone: 970.945.8212 Facsimile: 970.384.3470 www.darfield-county.com PRE -APPLICATION CONFERENCE SUMMARY PLANNER: D. Dunbar DATE: 3/30/2009 PROJECT: EnCana F11E Storage Yard (Storage> Industrial Use or Activity: Storage) OWNER: EnCana Oil & Gas USA REPRESENTATIVE: Renata Busch PRACTICAL LOCATION: Sec 11, T7S, R92w, OFF CR 331 TYPE OF APPLICATION: Limited Impact Review Parcel: 2401-112-00-219 I. GENERAL PROJECT DESCRIPTION The applicant seeks to install a storage yard adjacent to a COGCC wellpad site. A site has been identified for the installation of a storage yard for industrial activities. This is classified as `Storage' Supplies, Machinery, Equipment or products in the RURAL zone district, requiring a Limited Impact Review. The current location Parcel # 2401-112-00-219 a 44.61 -acre parcel owned by EnCana Oil & Gas USA, Inc. The parcel is south of the Interstate, with the following uses: residence, agricultural production, well pad site F 11 , existing well pad. The parcel is presently zoned Rural (R ). No floodplain or access issues involving R & B or CDOT. II. REGULATORY PROVISIONS APPLICANT IS REQUIRED TO ADDRESS (DEVELOPMENT CODE / COMPREHENSIVE PLAN, STATE STATUTES, ETC.) Garfield County Unified Land Use Resolution: 7-821, 7-810, III. PROCESS In summary, the process will be the following: a. Pre -application mtg 1. Submittal, Review by Staff for `technical completeness' 2. Notice (TC) to applicant, schedule, Applicant submits referral copies 3. Hearing (BOCC) scheduled, materials sent to referral agencies 4. Staff prepares report, sends report and referral comments to Applicant 5. BOCC hearing IV. APPLICATION REVIEW a. Review by: Staff for Am1OLEN APPLICATION AND REVIEW PROCEDURES 4-601 ADMINISTRATION RENEW FLOAC.HART Section 4402 Limited Impact Review Flowchart —6E-APFUCATICI4 Cetir[IaNcr• . SeNan 4103 A Ihdd 040dn 30 Galen days 40E604 q 1 Sedan 4.101624 : AdNMSRNIMEREVIEO Section 4-104 t,060.Aratfa WADI IwACi IiEVEW S Om4-106 Sehaf410ca[OOpnpel oetennnatien etcmp8; Seton 4403 0144311 sdSWdenieneadng ; ; 60640446004 40 4400 of 04040Won d omyl Evaluation EypiredartS64611eviHi -644444 :44006 6 (o010w6wn01appro[t3e a�nzlgtadant ofArtclo7-Di 4is%ms 1 ad N0044011112)Iw Nemug' Writ 4-143 F' 1 PahON906 411444660 pu dry" slvbrt9he021 2. 1446141444146026/041461 644.. /30060411 p hea6g try 06244. fi 3, VW* 0 td 6n papaly t3o a$ *oia tohramnl Fu011004010 iO4 pees 114091060414.1-::..; b RNi arM goMy dayrefe3TM ,eni '> flIcdl completeness recommendation and referral additional technical review agencies for b. Public Hearing: _ Planning Commission X Board of County Commissioners Board of Adjustment c. Referral Agencies: (Division of Water Resources, Colorado Department of Transportation, etc.) GarCo Road and Bridge GarCo Attorney GarCo Vegetation Management GarCo Public Health Dept. Burning Mtns Fire Protection District GarCo Oil 85 Gas Division of Wildlife V. APPLICATION REVIEW FEES a. Planning Review Fees: $_400 b. Referral Agency Fees: $ c. Total Deposit: $_400 (additional hours billed : $40.50 /hour) General Application Processing Planner reviews case for completeness and sends to referral agencies for comments. Case planner contacts applicant and sets up a site visit. Staff reviews application to determine if it meets standards of review. Case planner makes a recommendation of approval, approval with conditions, or denial to the appropriate hearing body. Disclaimer The foregoing summary is advisory in nature only and is not binding on the County. The summary is based on current zoning, which is subject to change in the future, and upon factual representations that may or may not be accurate. This summary does not create a legal or vested right. Pre -application Summary Prepared by: Dusty Dunbar , AICP Date 3/30/09 Other Documents, incl. assessor info, warranty deed, etc. scanned in folder Exlating Pipeline F.xiating 1 Culvert J q ENCANA OIL & GAS (USA) INC WELL PAD (FilE) FRAC STACINC AREA Section. 11, 7'7.5, 1t'92W, 6th P.M. T S01L Sr %.•:`."1;'A ox. Arco - 9,370 S Ft `,,. ., .,` f?,060 Cu. Yds F/?,2 STA. S+/S ..� 1`y � 1 p.• \ N.,,, ',,,, ‘..-N, 'STA. 3+tz1-tr, ' :' • 11100,1 y ) w�i I � F W � i` I. p t i i a �LECENO: f f 1, 1 I- N, "ill .. ✓a ACg11 14000 JrIrRfAC[ (• V' / •st •. #P44ENi P( 0AWR 5TA. �'DO/ 'Pao. ,. 4NM-OV FFatt6IlY1 1=== - PLRIJCICR CO.11P,t (FA1Rr, ri;,: •\. , 1 7 CdA •. or 00.OE aHFSCO (6to4 10i Cr Cyt Ago{) 0 a r(1. Minor 10 3(C040IT TRAP CY.1h w tEa(ulgrl rAR PYai e•NNWP 4Lo LAM) *0c( PC) 110 rc0 ...RCM C01111 011:10, f ! f t , r �j FRAC STAGYNC DAO: f _ 1 So /7N. CRACE = 61.512': .f f i" STA, 1+i4 104' 1/ /14T,) L F, 7a4i:. • a .4 10 cid Blots Trade .,d/.. Teenes AI Seal lnd PLq Gala 00. ,4 « 104 111111 04oiNN / D Gala d 11d , "alto 00414. 4k.�4 I EfaWHf / awl Ped 1110 J7L to 64., Eu:trd Ptdr n CnIH Pad p 5 LT adraao, and Pa:k'en me DMar/`d m i y .' MILe1 0.0444,., ai..i r .d P/n�•01 Na Co04 '1b, RnNL 1 wr {0 MC4?'s to Ie.aWN ad OMohO O (7) N 6401 le W 001UMlN 1e Mom b A Oa Qi0 ..."....1 • MC 6uP xerwre Spol(0404. r/' i• ` tel 0 .. \• •-., STA. 0+10 "'^• F r8 .:('1-rGIpO§f.0 IiCCF.55. ROAR, lOoe t The Mesa tc waste motorial OMo Is calculated os be,n mounds containing man cubic dn of dirt (a 15X fluff Mater is included. Tha mound areas oro calculated with push slopes of 2.5:1 do fall slopes of 2.5:1. ST 1 f1 c/%o1, SURVEYED BY C.D.S. 0A1E SURVEYED. 12-22-26 0RA'0N BY: R.V.C. SCALE; la = 60' DATE DRAM: 01-02-09 tt:wsEo: f7Tri State 05) Alt -P541 l.a.ncl Surve'yiitg, faze. \ I40 MIttd .1.XNAL 0.41. 10671,74, J1NI 01010 SHEET 4a OF 11 FI I E Tank Storage Yard Garfield County Limited Impact Review Narrative April 2009 Applicant: EnCana Oil & Gas (USA) Inc. 2717 County Road 215, Suite 100 Parachute, CO 81635 TABLE OF CONTENTS 1.0 Project Overview 1 1.1 Background 1 1.2 Description 1 1.3 Purpose and Need 1 1.4 Location 1 1.5 Attachments 2 2.0 Site Plan 3 3.0 Erosion and Sediment Control Plan Exhibit 3 4.0 Land Suitability Analysis Exhibits 3 4.1 Natural Habitat and Resource Areas 3 5.0 Impact Analysis 3 5.1 Adjacent Property and Land Use 3 5.2 Soil Characteristics 3 5.3 Geology and Hazard 3 5.4 Environmental Effects 4 5.4.1 Archaeological/Cultural/Historic 4 5.4.2 Paleontological 4 5.4.3 Wildlife 4 5.4.4 Traffic 4 6.0 Additional Standards Applicable to Industrial Use 4 6.1 Operations 4 7.0 Additional Standards Applicable To Storage Areas And Facilities 5 7.1 Storage of Hazardous Materials ................_....._...._ -_-.-.......----......._.............._.........._5 7.2 Outdoor Storage Enclosed or Concealed 5 8.0 Supporting Documentation 5 8.1 Emergency Response and Spill Prevention 5 8.2 Reclamation and Revegetation 8.3 Stormwater Management Plan 6 ATTACHMENTS Application Tab Narrative Tab Attachment 1 Project Maps Tab Attachment 2 Permits Tab Attachment 3 Stormwater Tab Attachment 4 Landowner Information Tab Attachment 5 Resource Surveys Tab Attachment 6 Emergency Response Plan Tab Attachment 7 Spill Plan Tab Attachment 8 Revegetation Security Tab TI I E Tank Storage Pard 1.0 PROJECT OVERVIEW 1.1 Background EnCana Oil & Gas (USA) Inc. (EnCana) requests a Limited Impact Review (LIR) from the Garfield County Board of County Commissioners (BOCC) for the operation, and maintenance of the F11E Tank Storage Yard (Storage Yard). The Storage Yard is located in Section 11, Township 7 South, Range 92 West, of the 61h Principal Meridian. The site is located northeast of the City of Rifle, Colorado, south of Interstate 70, off County Road 331. The Storage Yard is on approximately 3.12 acres of EnCana owned property. Primary use of the surrounding area of the project site is agriculture/rangeland, wildlife habitat, and recent natural gas extraction/development. 11 Description The use of the property will be for general storage of fracture (frac) or flow back/roll off tanks, heaters, trailers, fire trailers, pumps and other general equipment. The site was previously constructed and permitted through Colorado Oil and Gas Conservation Commission (COGCC) and utilized as oil and gas operations in order to store frac tanks being used for the F11E pad site. The Storage Yard will be in continuous use, year- round. However, the majority of activity at the Storage Yard will occur during normal daylight hours. Maximum potential at the Storage Yard would be approximately eighty five (85) tanks, but rarely will site be stocked full; we do not foresee storing more than a dozen tanks at any given time. A Vicinity Map and Site Plan for the Storage Yard are provided in the Project Maps tab. 1.3 Purpose and Need The scope of EnCana's request is to utilize the existing site to store tanks and equipment when not in use and avoid paying rental payments to third party. A substantial cost savings could be achieved by being able to store equipment on. EnCana... property. 1.4 Location The Storage Yard is located approximately +/- 10 miles south of the City of Rifle in Section 11, Township 7 South, Range 92 West of the 6th Principal Meridian in Garfield, County. EnCana is the owner of this parcel of property and the Storage Yard is situated on approximately 3.12 acres. The F11E Tank Storage Yard is located within zoned Rural Lands. The Garfield County Assessors map is provided in the Project Maps Tab and the deed and legal description for the property is provided in the Landowner Information Tab. Limited Impact Review April 2009 Fl l E Tank Storage Yard 1.5 Attachments This Limited Impact Review application includes the following attachments: Application Tab Limited Impact Review Narrative Tab Narrative Project Maps Tab Vicinity Map Site Plan Assessor's Map Permits Tab CDPHE Stormwater Discharge Permit Stormwater Tab Master Stormwater Management Plan Landowner Information Tab Deed and Legal Description Adjacent Property Owners Mineral Ownership Resource Surveys Tab Class I Cultural Resource Inventory Integrated Vegetation and Noxious Weed Management Plan Wildlife Impact and Sensitive Areas Report Paleontological Report Emergency Response Plan Tab Emergency Response Plan Emergency Notification Chart Local Outside Agency Contact list Spill Plan Tab Spill Plan/Emergency Response for Midstream Revegetation Security Tab Surety Permit Bond 2 Limited Impact Review April 2009 El I E Tank Storage Pard 2.0 SITE PLAN Site Plan Requirements are outlined within the Site Plan Layout provided in the Project Maps Tab. 3.0 EROSION AND SEDIMENT CONTROL PLAN EXHIBIT Tanks to be stored in the Tank Storage Yard will be empty. Depicted in the exhibits are run-on diversion, run-on bench, sediment reservoirs, culverts, and an elevated fill berm for pad water containment. Please reference the two Site Layout Plans, which detail our Erosion and Sediment Control Plan provided in the Project Maps Tab. 4.0 LAND SUITABILITY ANALYSIS EXHIBITS All operations at the Tank Storage Yard would comply with applicable county and state regulations and would not be conducted in a manner constituting a public nuisance or hazard. Specified criteria are outlined in the Site Plan provided in the Project Maps Tab. 4.1 Natural Habitat and Resource Areas EnCana contracted WestWater Engineering to prepare a Wildlife Impact and Sensitive Areas Report, along with an Integrated Vegetation and Noxious Weed Management Plan which are included in the Resource Surveys Tab. Also provided in the Resource Surveys Tab are the Class I Cultural Resource Inventory conducted by Grand River Institute, where no resources were identified at the site. And a PaleontolgicahReport prepared by Aspen Environmental Field Services, LLC., where no resources were identified. 5.0 IMPACT ANALYSIS 5.1 Adjacent Property and Land Use An Adjacent Landowner listing with mailing addresses is provided in the Landowner Tab. Existing use of the surrounding area of the project site is agriculture/rangeland, wildlife habitat, and recent natural gas extraction/development. 5.2 Soil Characteristics The two soil units found within the site will have no effect on the proposed use of the land. The Integrated Vegetation and Noxious.Weed Management Plan isprovided in the Resource Surveys Tab. 5.3 Geology and Hazard There are no known geological hazards present at the site. Limited Impact Review 3 April 2009 Fl IE Tank Strange Pard 5.4 Environmental Effects 5.4.1 Archaeological/Cultural/Historic The Class I Cultural Resource Inventory provided in the Resource Surveys Tab notes 'a determination of "no effect" for the project is recommended pursuant to section 106 of the National Historic Preservation Act (36CFR 800)'. 5.4.2 Paleontological No paleontological resources were identified within the vicinity of the project area. Therefore, there will be no impacts to paleontological resources. The. Paleontological Survey Report is provided in the Resource Surveys Tab. 5.4.3 Wildlife No federal listed threatened, endangered or candidate wildlife species occupy the area of the site, thus, none of these species will be affected as a result of the proposed project. The Wildlife Impact and Sensitive Areas Report is provided in the Resource Surveys Tab. 5.4.4 Traffic There will be minimal traffic impacts and the site would be accessed mainly by 3 -axle winch trucks entering and exiting the site. Tanks and equipment would be dropped off or picked up at various intervals throughout the year. The amount of drilling activity will determine the quantity of truck traffic. It is estimated that an average of 20 trucks a month could be accessing the site. Dust will be mitigated via reduced speed and watering road or magchloride as needed. 6.0 ADDITIONAL STANDARDS APPLICABLE TO INDUSTRIAL USE As requested in the Pre -Application Conference Summary, EnCana is required to address regulatory provisions outlined in the Garfield County Unified Land Use Resolution: 7-810 and 7-821. 6.1 Operations Operations of the Storage Yard are such that there will be loading and unloading of tanks, pumps and other general equipment, as noted in the above-mentioned Project Overview Description. The location is elevated above most of the other properties in the area. Adjacent property characteristics and surrounding land uses are such that a visible barrier fence is not necessary. Some berms on the north and west sides would alleviate any visual concerns. All operations involving loading and unloading of vehicles shall be conducted on private property and shall not be conducted on a public right-of-way. 4 Limited Impact Review April 2009 FILE Tank Storage Yard 7.0 ADDITIONAL STANDARDS APPLICABLE TO STORAGE AREAS AND FACILITIES 7.1 Storage of Hazardous Materials No hazardous materials will be stored at the site. And no materials or wastes shall be deposed on the property in a form or manner that may be transferred off the property by any reasonably foreseeable natural cause or force. 7.2 Outdoor Storage Enclosed or Concealed The Storage Yard enclosure or concealmenthas been. discussed in the Operations section above, whereby, natural landscape and topography conceal the majority of the site from adjacent property. 8.0 SUPPORTING DOCUMENTATION 8.1 Emergency Response and Spill Prevention. EnCana would comply with its Emergency Response Plan (ERP), which describes the functional roles and accountabilities for life safety, property damage, and environmental response. The ERP also describes the communication and notification protocols to engage support, based on the nature and complexity of the emergency. The ERP is included in the Emergency Response Tab. The Spill Plan serves as a guide to assist personnel in the proper response to an emergency incident and identifies emergency notification and state agencynames and phone numbers that shall be contacted in the event of a spill. The successful handling of any oil discharge depends on four different operations: 1) Containment, 2) Removal, 3) Disposal, and 4) Cleanup which are summarized in the Spill Plan provided in the Spill Plan Tab. The Stormwater Management Plan provided in its respective Tab also provides information with regards to spill prevention. 8.2 Reclamation and Revegetation The site has been protected from landscape water run-on and the landscape water has been directed into waste water diversions for irrigation use on existing pastures. All surfaces used for storage have been stabilized with gravel. All other disturbances have been seeded with grasses and protected from erosion with a hydraulicerosion control mulch. Seeded surfaces will be maintained until revegetation reaches 80% cover. Maintenance includes reseeding, weed management and stormwater management. The Stormwater Management Plan provided in the Stomrwater Tab also details Best Management Practices (BMPs), Interim Reclamation, as well as Inspections and Maintenance. Limited Impact Review ,April 2009 Fl I E Tank Storage Yard EnCana will provide a Revegetation Security to Garfield County in the amount of $12,480 or $4,000 per acre of disturbance for the F11E Tank Storage Yard. The security deposit certificate is provided in the Revegetation Security Tab. 8.3 Stormwater Management Plan Activities comply with Stormwater Management and Spill Prevention Controls and Countermeasures as required by Garfield County, the State of Colorado, and the United States Environmental Protection Agency. Implementation of these plans also ensures that EnCana would not pollute surface runoff, stream flow, or groundwater. Copies of the Master Stormwater Management Plan and Spill Plait are provided in -their respective Tabs. 6 Limited Impact Review .april 2069 l J / © MELTON /WRIGHT yo ELDER v WILLIAMS a PROTZ {4uccINI ! . CCINI \ ' TRUOS —5a4. CSP MELTON ` . CQUEENEY : ri-w� ' > allom UWP WEST ` DAHLIN i_ I I MILLER co .b I' 34 J LCATTTLE 36 ULTZ • 0 I Y U ;, ` MAYNARD \'j ko DONELSON a_ ' \ CIRCLE B' / ' MILLER �ID & CATTLE 0 CURR 5a°AIINOR LAND COMPANY LLC • /v II MA -- -'DAT'}KI -MEASF • � r a HAZELBUSH - l EXMPTOIS -LAST DANCE LLC \ ti ;rce ni J - ` •U>ro - o T6S BOIJLTO .J . �.. \ JUNIPER GROUP , J NIPER 4 GIGO `, T7S T LAST DANCE LLC JUNIPER o LANGEG�i '— \ ''\ 1.3E 11 rJKAGAWA PT LIVESTOCK `INC SCHWARTZ J JUNIPER GROUP! 1 2 -IITE GROUP V- C / ` Ef N K RA f�• �\1 01E CHEROKEE F4E MOUNTAIN ESTATES LLC ARBANEY _. �20A. p, �y ENCANA , 02 I ' I AKLINSKI D. E 10Er BRACKET Bf E / ANDER1 A ENCANA EUBANKRIFFIN i � a , sr ROI ' FSGAR ALLMON ��TWIN THOMPSO IN HO P50 I .. — — I LANGEGGER ' �s f ����i r ASPEN RESO(1RCE F10E MOON „� j ENCANA 1 REW WALT' •, >/6 f_.THOMPSON ,/ , FAMILY TRUST [-, �I BLM .. ' �` = ley CREEK RAN/H.--.,- & it/ <", s ' / " ill \ 8 ` _ `~ I 12 •• 0 11 / /' ,. ii/: HILL (- FILE TANK STORAGE YARD . BLM. ..4Fi: 1• a'- J';, ' 1 KNIGHT 1---__ fl U` N IIENDERSON REW %- & MOLLER i t STAUFER STAUFER =, t a • N1 ¢¢� MO 1) I "` ,> 111 -_ Iill ` KNIGHT i STAUFER 1 ,�„_J —,_/f 1.ORGAN Af5 ST FER N w,- <\ ="' MORGAN HILL. — — . BUERGE l j ' �; '- rrr Far iew. Ce . jr) �� SON CS \� BUERGER q' RGER j MCCRQY RANCH CO ... O �_ MCCR RANCI j J. ' i i 3 ` HILL HILL ti\ �- / j • is-- 1 ._ t. Q' R ;: .\RoR ilVIN .. IIILL . — eas !I RAGE MCCRAY1\. �.. . -,II1 LEGEND EnCana Oil & Gas (USA) Inc. W FI IE TANK STORAGE YARD EXISTING F 11E TANK STORAGE YARD SECTION 11, T7S, ROAD • EXISTING PAD R92W, 6th, P.M. GARFIELD COUNTY, COLORADO iW SATCI3 Wasatch Surveying Associates N it w PROJECT NUMBER 09-04-15 SHEET 1 10 SURVEYING 906 Main Street Evanston, Wyoming 82930 TOPOGRAPHIC MAP DATE: 3/23/09 1 Phone No. (307} 789.4545 Fax 307-789-5722 SCALE: 1”=2000' OF 1 0 V RBANEY 183 PIT LIVESTOCK INC. JM ARBANEY & BEVAN 4/0 PIT LIVESTOCK INC. ENCANA bi ALLMON ENCANA SCHWARTZ E'A,x,• • V11V V JUNIPER GROUP r EUBANKS ENCANA GRIFFIN BRACKEN A a REW REW 206 H.L.M. BOUNDARY BUERGER TRUST LEGEND REW BUERGER = SUBJECT PROPERTY HENDERSON & MOLLER B.L.M. YYYYYYY STAUFER MCCRAY RANCH CO EPARED POR: EnCana Oil & Gas (USA) Inc er DATE REFERENCES GARFIELD COUNTY PARCEL MAPS PREPARED BY. + �- ATC E ma Yh�M 6183 BURVEY(NE Prone no. 1307) resasis 0 500 (SCALE IN FEET) 1000 DATE: April 14, 2009 SCAI Fr 1 1000' STAUFER PROJECT NO.: 09-04-15 F11E Tank Storage Yard Assessor's Map Located in the S1/2 NW1/4 Section 11, T7S, R92W, 6th P.M. Garfield County, Colorado SHEET 1 OF 1 1975 Brass Cop WC (NORTH 33.00') Section Line { ONorthwest Corner \ Section 11 Witnessed by 0 1975 Brass Cop WC \ (NORTH 33.00') N co 9m se 0 °� N. S\u`: 0 P et,\`' F o £\n SW 1/4 NW 1/4 \ \ \ \ & GAS (USA) INC TE PLAN K STORAGE YARD ,ocated In T7S, R92W, 6th P.M. County, Colorado STA. 3+75 1 Existing Pipeline Storage Area Boundary West 1/4 Corner "81—Section 11 (Aluminum Cop) / / STORAGE A PARCEL OF LAND LOCATED P.M. GARFIELD COUNTY, COLO DESCRIBED AS FOLLOWS: 09\PAD F11E\dwg\F11E TANK STORAGE SITE PLAN.dwg ESTIMATED EARTHWORK QUANTITIES (No Sh Ink or swell adluelmente have been used) (Expressed in Cubic Yard ) ITEM CUT FILL EXCESS 6" TOPSOIL PAD 8,600 8,600 0 Topsoil a not me Tops x Pod Cut TOTALS 8,600 8,600 0 1.790 BEGINNING AT A POINT IN TH 6th P.M. WHICH BEARS 528'3 - OF SAID SECTION 11, THENCE 112.03'; THENCE 581'47'19"E` N89'52'24"E 65.61'; THENCE THENCE 552'53'07"W 120.43', S66'10'31"W 220.17'; THENCI 77.73'; THENCE N22'42'22" N - CONTAINS 3.12 ACRES MORE Tri State Land Surveying. Inc. \035) 781-2501 180 NORTH VERNAL AVE. VERNAL, UTAH 84078 ";;ulhi7r_u9itZesor volt' cut -slope fill -slope w/hydro mulch and seed Se topsoil stockpile w/hydro mulch and seed C13 working surface STATE OF COLORADO Bill Ritter, Jr., Governor James 8. Martin, Executive Director Dedicated to protecting and improving the health and environment of the people of Colorado 4300 Cherry Creek Dr. S. Denver, Colorado 80246-1530 Phone (303)692-2000 TDD Line (303) 691-7700 Located in Glendale, Colorado http://www.cdphe.slate.co.us June 20, 2007 Laboratory Services Division 8100 Lowry Blvd. Denver, Colorado 80230-6928 (303) 692-3090 Teny C. Gosney, Envir. Coord. EnCana Oil & Gas (USA) Inc., 2717 County Road 215 Ste. 100 Parachute, CO 81635 970/285-2687 RE: Final Permit, Colorado Discharge Permit System — Stormwater Certification No: COR -034840 Mamm Creek Garfield County Local Contact: Terry Gosney, Envir. Coordinator 970/309-8155 Dear Sir or Madam: 1876 Colorado Deparunent of Public Health and Environment Enclosed please find a copy of the new permit and certification which have been re -issued to you under the Colorado Water Quality Control Act. Your old permit expires on June 30, 2007. This is a renewal to the permit, and replaces the old one. See page 2 of the Rationale (the pages in italics) for a summary of the changes to the permit. Your Certification under the permit requires that specific actions be performed at designated times. You are legally obligated to comply with all terms and conditions of the permit. Please read the permit and certification. If you have any questions please visit our website at : www.cdphe.state.co.us/wq/permitsunit/stormwater or contact Matt Czahor at (303) 692-3517. Sincerely, Kathryn Dolan Stormwater Program Coordinator Permits Unit WATER QUALITY CONTROL DIVISION xc: Regional Council of Governments Local County Health Department District Engineer, Technical Services, WQCD Permit File STATE OF COLORADO COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT WATER QUALITY CONTROL DIVISION TELEPHONE: (303) 692-3500 CERTIFICATION TO DISCHARGE UNDER CDPS GENERAL PERMIT COR -030000 STORIVIWATER DISCHARGES ASSOCIATED WITH CONSTRUCTION Certification Number COR034840 This Certification to Discharge specifically authorizes: EnCana Oil & Gas (USA) Inc. LEGAL CONTACT: T en y C. Gosney. E n vir. Goord. EnCana Oil & Gas (USA) Inc. 2717 Cnunty Road 215 �Cte= 100 Parachute, CO 81635 Phone # 970/285-2687 terry.gosney@encana. com LOCAL CONTACT: Ter iy Gosney, Envir. Coordinator, Phone # 970/309-8155 - terrv_gosneynencan a,com During the Construction Activity: Gas/OiI Field Exploration and/or Development to discharge stormwater from the facility identified as Mamm Creek which is located at: Various locations Various locations, Co 81650 Latitude 39/25/00, Longitude 107/50/00 In Garfield County to: -- Colorado River Anticipated Activity begins 07/01/2002 continuing through 06/30/2010 On 999 acres (999 acres disturbed) Certification is effective: 07/01/2007 Certification Expires: 06/30/2012 Annual Fee: $245.00 (DO NOT PAY NOW — A prorated bill will be sent shortly.) Page 1 of 22 ENCANA.. „-_- -7.- EnCana Oil & Gas (USA) Inc. Volume 1 Master Stormwater Management Plan Mamm Creek Unit COR -034840 EnCana Oil & Gas (USA) Inc. Revised February 2008 Contents 1.0 Introduction 1-1 1.1 Site Specific Records 1-1 1.2 SWMP Administrator 1-2 2.0 Narrative Description of Master SWMP Permit Coverage Area 2-1 2.1 Sequence of Major Activities 2-1 2.1.1 Well Pads and Roads 2-1 2.1.2 Pipelines 2-2 2.1.3 Compressor Stations, Treatment Facilities, or Other Facilities 2-4 2.2 Area Estimates 2-6 2.3 Description of Existing Topography and Soils 2-6 2.4 Description of Existing Vegetation 2-6 2.5 Identification of Potential Pollution Sources 2-7 2.6 Allowable Sources of Non-Stormwater Discharge 2-8 2.7 Receiving Water 2-8 2.8 Master SWMP Permit Area Map and Individual Stormwater Site Plans 2-9 3.0 Best Management Practices (BMPs) 3-1 3.1 Erosion, Drainage, and Sediment Control BMPs 3-1 3.2 Non-Stormwater Control BMPs 3-1 3.2.1 Materials Delivery and Storage 3-2 3.2.2 Material Handling and Spill Prevention 3-2 3.2.3 Vehicle Cleaning, Fueling, Maintenance, and Tracking Controls 3-2 3.2.4 Waste Management and Disposal 3-3 3.2.5 Dewatering 3-3 3.3 Stormwater Manual of BMPs 3-4 3.4 Phased BMP Implementation 3-5 4.0 Interim Reclamation and Final Stabilization 4-1 5.0 Inspection and Maintenance 5-1 5.1 Inspection Schedule 5-1 5.1.1 Minimum Inspection Schedule for active sites 5-1 5.1.2 Post -Storm Event Inspections at Temporarily Idle Sites 5-1 5.1.3 Completed Sites 5-1 5.1.4 Winter Conditions Inspections Exclusion 5-2 5.2 Performing Inspections 5-2 5.3 Maintenance 5-2 5.4 Documenting Inspections and Maintenance 5-3 6.0 Plan Revisions and Retention 6-1 7.0 Inactivation Notice 7-1 8.0 Signature 8-1 9.0 References 2 List of Appendices Appendix A General Permit Application Appendix B Revegetation Manual Appendix C Existing Soil and Vegetation Data Appendix D Master SWMP Permit Area Map Appendix E Stormwater Manual of Best Management Practices (BMPs) Appendix F Final Stabilization Certification Appendix G Inspection and Maintenance Report Form Appendix I-1 Inactivation Form 1.0 Introduction This Master Stormwater Management Plan (Master SWMP) satisfies the Colorado Department of Public Health and Environment (CDPHE) Water Quality Control Division (WQCD) General Permit No. COR -030000 issued on May 31, 2007 for Stormwater Discharges Associated with Construction Activities (the Stormwater Construction Permit). EnCana 00 & Gas (USA) Inc. (EnCana) has submitted a General Permit Application to WQCD, a copy of which is provided as Appendix A. This Master SWMP has been prepared in compliance with CDPHE WQCD, the Federal Clean Water Act (CWA), and the National Pollutant Discharge Elimination Permit (NPDES) regulations found in 40 CFR, Part 122.26 for stormwater discharges. The objectives of this Master SWMP are to: 1. Identify all potential sources of pollution which may reasonably be expected to affect the quality of stormwater discharges associated with construction activity within this Master SWMP permit area at each project site; 2. Describe the practices to be used to reduce the pollutants in stormwater discharges associated with construction activity within this Master SWMP permit area at each project site (also known as Best Management Practices (BMPs)); and ensure the practices are selected and described in accordance with good engineering practices, including the installation, implementation and maintenance requirements; 3. Be properly prepared and updated to ensure compliance with the terms and conditions of the Stormwater Construction Permit; 4. Work hand in hand with the Site Specific Records, as described in the following section; and 5. Serve as an education tool and comprehensive reference/guide to stormwater management for inspectors, surveyors, engineers, and EnCana employees and contractors. EnCana construction activities fall under one of two types. Exploration and Production (E&P) sites involve the construction of well pads, roads, and other facilities. Midstream Services (also referred to as Gas Gathering) sites involve the construction of pipelines and compressor, treatment, and other facilities. This Master SWMP is intended to address stormwater management for any and all of these sites within this Master SWMP's Permit Coverage Area. 1.1 Site Specific Records While Volume 1 of the Master SWMP contains all of the general permit area information; Volume 2 of -the Master SWMP contains all of the Site Specific Records including all Individual Stormwater Site Plans (Site Plans), as discussed in Section 2.8, and all Inspection and Maintenance Reports (discussed in Section 5.4). These Site Specific Records contain information specific to each site (each well pad, compressor station, section of road/pipeline, etc.), including information on areas of disturbance, ecosystems and vegetation, soil types, percent pre -disturbance vegetation, etc. Any changes to the design of individual sites or the BMPs used at those sites will be noted on the Site Plans as those changes occur, and kept with the Site Specific Records. The Site Specific Records (Volume 2 of the Master SWMP) are bound separately from the body of this Master . SWMP; however, both are readily available during any inspection. Both the body of this SWMP (Volume 1) and the Site Specific Records (Volume 2) comprise the entire SWMP, and go hand in hand in keeping EnCana in compliance with stormwater regulations. The Site Specific Records will be kept at the EnCana field office in C:\Documents and SettingsVbusch\Lacal Settings\Temporary Internet Files \OLK8A\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 1-1 Revised February 2008 Parachute during active construction and site inspections to ensure accurate implementation, inspections, and maintenance of BMPs, as well as timely revisions to the Site Specific Records. 1.2 SWMP Administrator The SWMP Administrator is responsible for the process of developing, implementing, maintaining, and revising this SWMP as well as serving as the comprehensive point of contact for all aspects of the facility's SWMP. SWMP Administrators: • E&P Sites: Terry Gosney, Regional Environmental Coordinator 2717 County Road 215, Suite 100, Parachute, CO 81635 (970) 285-2600 • Midstream Services: Brad Ankrum, Piceance Midstream Operations Manager 2717 County Road 215, Suite 100, Parachute, CO 81635 (970) 285-2600 C:\Documents and Settingsvbusch\Local Settings\Temporary Internet Files\OLKBA\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 1-2 Revised February 2008 2.0 Narrative Description of Master SWMP Permit Coverage Area Name of Permit Coverage Area: Mamm Creek Unit Permit Number: COR -034840 Location of the Permit Coverage Area: • County: Garfield and Mesa County. • City: Located in Colorado approximately 1 mile south of Rifle and south of the the southern portion of the Piceance Basin. • Township/Section/Range: Township 6S, 7S, & 88, Range 92W, 93W, & 94W, sections, Sixth Principal Meridian. Activities at the Permit Coverage Area will likely involve the construction of: Colorado River within portions or all of 113 • Well pads • Access roads • Pipelines • Compressor stations • Water Treatment Facility • Fresh Water Storage Pond • Evaporation Facility The above construction activities are only typical and may vary once construction begins: Up-to-date information on the construction of well pads, roads, pipelines, etc. will be kept with the Site Specific Records (Volume 2 of the Master SWMP). 2.1 Sequence of Major Activities . Site specific, scheduling, surface use agreements, and/or other constraints can and/or may dictate changes in construction sequences. Significant sequence changes are addressed in the. Site Specific Records (Volume 2 of the Master SWMP). Specific details on the construction and maintenance of BMPs mentioned below are provided in the Stormwater Manual of Best Management Practices (BMP Manual) as discussed in Section 3.3. 2.1.1 Well Pads and Roads Construction activities for well pads and roads are generally completed in the following sequence: Preconstruction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. 2. Temporary BMP's. Where physical access is available, installation of terminal perimeter and temporary sediment controls, such as wattles, silt fence and/or other as necessary. Actual BMPs used for each site are shown on the Site Plans (discussed in Section 2.8) and kept with the Site Specific Records (Volume2 of the Master SWMP), Construction: C:Documents and Settingsvbusch\Local Settings\Temporary Internet Files\OLK8A\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 2-1 Revised February 2008 3. Vegetation Clearing. Vegetation will be cleared/grubbed and placed along the perimeter at the terminal discharge edges/points in a windrow and/or dam beyond the edge of excavation and at any run -on -protection discharge points, and/or chipped or other depending on landowner requirements. 4. Diversions and Retention Reservoirs. After vegetation clearing and prior to topsoil stockpiling, diversions are to be placed for run -on -protection (ROP) to prevent the greater landscape from discharging onto the planned disturbance. Temporary sediment control BMPs shall be placed at the discharge points of the ROP until permanent erosion controls can be installed along the entire length of the ROP. Diversions are to be installed along the terminal discharge edge inside of the vegetation windrows to convey site water/sediment to terminal discharge points where rough retention reservoirs are to be installed. The retention reservoir outlets are to receive temporary sediment control BMPs until permanent retention reservoirs and erosion, drainage, and sediment BMPs can be installed. 5. Topsoil Stripping/Conservation. All ACCESSIBLE TOPSOIL is to be removed from areas that are to be excavated, covered in subsoils, or turned into stabilized unpaved surfaces. If initial topsoil stockpile areas are insufficient to accommodate the quantities of topsoil being generated; the excess is to be placed at either end of the subsoil stockpile and segregated as much as possible. After major earthwork, grading, and erosion/drainage/sediment controls are complete, any areas that can be identified for immediate interim reclamation shall receive topsoil. 6. General Rough Grading. The site location will be graded to provide suitable surfaces for vehicle traffic and/or building sites, and may be graded to establish surface drainage patterns, such as berms or roadside ditches as necessary. 7. Facility Specific Grading. Individual facilities may require additional excavation to allow for construction of foundations. Excess soil will typically be used in general site grading. 8. Foundation Construction. To support facilities (such as tanks, processing equipment, etc), foundations will be constructed. Foundations may consist of select backfill, concrete spread footings, or piles. Finished support elevations are to be installed twelve to eighteen inches (12-18") above finished grade or the lowest point of the facility. 9. Facility Construction. Tanks, processing equipment, etc. will be constructed. Interim Reclamation: 10. Gravel Surfacing. Areas used for access, parking; or materials staging will typically be gravel surfaced. 11. Reclamation of Unused Areas. Areas not needed for facilities, roads, parking, or materials staging will generally be reclaimed. Salvaged topsoil will be spread and the vegetative seed mix will be applied. 12. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage crossings) additional measures may be applied to increase stability of the reclaimed area. Final Reclamation: 13. Reclamation of Post -Operation Areas. When operation of well pad or road is no longer necessary, the area will be decommissioned and all newly disturbed areas will be reclaimed. Any remaining topsoil will be spread and the vegetative seed mix will be applied. Thismay occur after termination of this permit and under the coverage of a new construction permit. 2.1.2 Pipelines Construction activities for pipelines are generally completed in the following sequence: Preconstruction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. C:\Documents and Setlingstrbusch\Local Settings\Temporary Internet Files\OLK8AWamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-2 Revised February 2008 2. Mark Right -Of -Way. The construction right-of-way (ROW) will be marked prior to construction with laths and/or flagging. Laths/flagging will be maintained throughout construction and will not be removed until after reclamation activities have been completed. 3. Temporary BMPs. EnCana's stormwater inspectors will determine locations to install preconstruction temporary erosion control devices, per site specific BMP installation plans and as necessary. EnCana's contractor will maintain the erosion control structures as directed by the stormwater inspectors throughout all phases of construction, or until permanent erosion control measures are installed. Actual BMPs used for each site are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Construction: 4. Vegetation Clearing. If necessary, vegetationwill be cleared.and placed in a windrow at the.edge of the work area to be used later in reclamation activities, removed from the construction site, or burned/chipped depending on landowner requirements. Details for windrows are provided within the Stockpiling BMP of the BMP Manual (discussed in Section 3.3). 5. Topsoil Stripping. All ACCESSIBLE TOPSOIL (from the entire width of the right-of-way) will be removed and temporarily stockpiled along the up -hill side of the right-of-way (if terrain grades will allow) for later use in reclamation activities. 6. General Grading. For pipeline segments that occur in relatively rough terrain, general grading will be conducted to create a safe and workable ground surface. This is generally done to form a relatively level work surface on steep cross slopes and to reduce slopes in undulating terrain (arroyo -and wash crossings). The site location will be graded to provide suitable surfaces for vehicle traffic and/or building sites, and may be graded to establish surface drainage patterns; such as berms or roadside ditches as necessary. 7. Trench Excavation. The trench needed for pipeline installation is almost always off -set in the ROW. The surveyors may indicate the location of the trench on their pipeline lateral. Generally, the trench will be located in the first third of the ROW. The remaining two thirds of the ROW will be used for working space. The trench depth and width will vary with the number of pipes to be installed and the pipe diameter. Generally, a 4 -foot deep trench will be excavated by track -mounted excavators. The ditch will be excavated and sloped in accordance with OSHA specifications. The cover from top of pipe to ground level will be a minimum of 36 inches. Where rock is encountered, tractor -mounted mechanical rippers or rock trenching equipment may be used to facilitate. excavation. The trench will be excavated and subsoil material stockpiled within the confines of the approved right-of-way limits. Trench spoil will be stored in a separate location from the previously segregated topsoil. 8. Pipe Installation. Pipe installation will include stringing, bending for horizontal or vertical angles in the alignment, welding the pipe segments together, coating the joint areas to prevent corrosion, and then lowering -in and padding. 9. Stringing. Pipe will be hauled by truck to the pipeline ROW. Each joint of pipe wiltbe unloaded and placed parallel to the ditch. 10. Bending. After the joints of pipe are strung along the ditch, individual joints of pipe may need to be bent to accommodate horizontal and vertical changes in direction. Field bends will be made utilizing a hydraulically operated bending machine. Where the deflection of a bend exceeds the allowable limits for a field -bent pipe, factory (induction) bends will be installed. 11. Welding. After the pipe joints are bent, the pipe is lined up end-to-end and clamped into position. The pipe is then welded in conformance with 49 CFR Part 192, Subpart E. "Welding of Steel Pipelines" and API 1104, "Standard for Welding Pipelines and Related Facilities". 12. Welding Inspection. Welds will be visually inspected by a qualified inspector. Any defects will be repaired or cut out as required under the specified regulations and standards. 13. Coating. To prevent corrosion, the pipe will be externally coated with fusion bonded epoxy coating prior to delivery. After welding, field joints will be coated with fusion bond epoxy coating, tape and C \Documents and Settingsvbusch\Local Settings\Temporary Internet Files\OLKBAIMamm Creek SWMP (East Dry Hallow Loop) 021808 doc 2-3 Revised February 2008 primer, or shrink sleeves. Before the pipe is lowered into the ditch, the pipeline coating will be visually inspected and tested with an electronic detector, and any faults or scratches will be repaired. 14. Lowering -In and Padding. Once the pipe coating operation has been completed, a section of the pipe will be lowered into the ditch. Side -boom tractors may be used to simultaneously lift the pipe, position it over the ditch, and lower it in place. Inspection will be conducted to verify: that minimum cover is provided; the trench bottom is free of rocks, debris, etc.; external pipe coating is not damaged; and the pipe is properly fitted and installed into the ditch. Specialized padding machines will be used to sift soil fines from the excavated subsoil to provide rock -free pipeline padding and bedding. In rocky areas, padding material or a rock shield will be used to protect the pipe. Topsoil will not be used to pad the pipe. At the completion of lowering -in and padding activities the contractor may install trench breakers around the pipelines to minimize subsurface water flow. Details for trench breakers are provided within the BMP Manual (discussed in Section 3.3). 15. Backfilling. Backfilling will begin after a section of the pipe has been successfully placed in the ditch and final inspection has been completed. Backfilling will be conducted using a bulldozer, rotary auger backfill, padding machine or other suitable equipment. Backfilling the trench will use the subsoil previously excavated from the trench. Backfill will be graded and compacted, where necessary for ground stability, by being tamped or walked in with a wheeled or track vehicle. Compaction will be performed to the extent that there are no voids in the trench. Any excavated materials or materials unfit for backfill will be utilized or properly disposed of in conformance with applicable laws or regulations. 16. General Grading. If general grading was conducted to facilitate pipeline construction, these materials will be replaced and graded to recreate the preconstruction topography. Final Reclamation: 17. Cleanup. Cleanup activities will be initiated as soon as practicable after backfilling activities have been completed. All construction -related debris will be removed and disposed of at an approved disposal facility. 18. Subsoil and Topsoil Placement. Subsoil will be evenly re-contoured across the right-of-way to pre -construction conditions. After the subsoil has been re -spread the contractor will spread the previously segregated topsoil back across the right-of-way. The topsoil will be evenly spread to original contours. 19. Vegetation. After any remaining topsoil is spread, the vegetative seed mix will be applied. The area will be revegetated according to private landowner Surface Use Agreements and/or according to the BLM/Forest Service reclamation requirements. Details for revegetation are provided within the BMP Manual (discussed in Section 3.3) and the Revegetation Manual (provided as Appendix B). 20. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage crossings) additional measures may be applied to increase stability of the reclaimed area. Possible erosion stabilization methods are provided within the BMP Manual (discussed in Section 3.3). Actual locations and measures used are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). 2.1.3 Compressor Stations, Treatment Facilities, or Other Facilities. Construction activities for compressor stations, treatment facilities,. and other facilities are generally completed in the following sequence: Preconstruction: 1. Surveys. Topographic, vegetation, wildlife and archeology, as dictated. 2. Temporary BMP's. Where physical access is available, installation of terminal perimeter and temporary sediment controls, such as wattles, silt fence and/or other as necessary. Actual BMPs C'.\Documents and Setlingstrbusch\Local Settings\Temporary Internet Files \OLK8A\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-4 Revised February 2008 used for each site are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Construction: 3. Vegetation Clearing. Vegetation will be cleared/grubbed and placed along the perimeter at the terminal discharge edges/points in a windrow and/or dam beyond the edge of excavation and at any run -on -protection discharge points, and/or chipped or other depending on landowner requirements. 4. Diversions and Retention Reservoirs. After vegetation clearing and prior to topsoil stockpiling, diversion are to be placed for ROP to prevent the greater landscape from discharging onto the planned disturbance. Temporary sediment control BMP's shall be placed at the discharge points of the ROP until permanent erosion controls can be installed along the entire length of the ROP. Diversions are to be installed along the terminal discharge edge inside of the vegetation windrows ... to convey site water/sediment to terminal discharge points where rough retention reservoirs are to be installed. The retention reservoir outlets are to receive temporary sediment control BMP's until permanent retention reservoirs and erosion, drainage, and sediment BMP's can be installed. 5. Topsoil Stripping/Conservation. All ACCESSIBLE TOPSOIL is to be removed from areas that are to be excavated, covered in subsoils, or turned into stabilized unpaved surfaces. If initial topsoil stockpile areas are insufficient to accommodate the quantities of topsoil being generated, the excess is to be placed at either end of the subsoil stockpile and segregated as much as possible. After major earthwork, grading, and erosion/drainage/sediment controls are complete, any areas that can be identified for immediate interim reclamation shall receive topsoil. 6. General Rough Grading. The site location will be graded to provide suitable surfaces for building sites and vehicle traffic, and may be graded to establish surface drainage patterns, such as berms or roadside ditches as necessary. 7. Excavation. Soil will be excavated to allow for theconstruction•of foundations. Trenches will be excavated for all underground piping and conduit. Excess soil will typically be used in general site grading. 8. Foundation Construction. Foundations will be constructed to support facility buildings. Foundations may consist of select backfill, concrete spread footings, piles, etc. Finished support elevations are to be installed twelve to eighteen inches (12-18") above finished grade or the lowest point of the facility. 9. Facility Construction. Buildings, tanks, processing equipment, etc, wiR be constructed. Utilities will be installed. Interim Reclamation: 10. Landscaping. If necessary, certain areas will be spread with topsoil and landscaped. 11. Gravel Surfacing. Areas used for access, parking, or materials staging will typically be gravel surfaced. 12. Reclamation of Unused Areas. Areas not needed for facilities, roads, parking, or materials staging will generally be reclaimed. Salvaged topsoil will be spread and the vegetative seed mix will be applied. 13. Application of Erosion Stabilization. Depending on terrain (e.g. steep slopes and drainage crossings) additional measures may be applied toincrease.stability of the reclaimed area Possible,. erosion stabilization methods are provided within the BMP Manual (discussed in Section 3.3). Actual locations and measures used are shown on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Final Reclamation: 14. Reclamation of Closed Facilities. When facilities are no longer necessary, the buildings may be demolished, according to approved procedures. All construction materials will be removed and the newly disturbed areas will be reclaimed. Any remaining topsoil will be spread and the vegetative seed C:\Documents and Setlingstrbusch\Local Seltings\Temporary Inlernet Files\OLK8A\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 2-5 Revised February 2008 mix will be applied. This may occur after termination of this permit and under the coverage of a new construction permit. 2.2 Area Estimates The Permit Coverage Area encompasses portions or all of 113 sections of surface land (approximately 72,273 acres) in Township 6, 7, and 8 South, Range 92, 93, and 94 West. Development of the natural gas resource and related facilities within the area is estimated to result in a total disturbance area of 999+ acres. Because the area will vary over time, these are only approximate estimates. This information is used to help determine the extent of control measures (BMPs) needed. • 2.3 Description of Existing Topography and Soils The Permit Coverage Area consists of relatively flat mesas and ridge crests, alluvial terraces, steep slopes, mountainsides, intermittent drainage swells, and valley bottoms. The Mamm Creek Unit is located south of the Colorado River, within the southern portion of the Piceance Basin. The Piceance Basin is a broad, asymmetric, southeast -northwest trending structural basin that contains sedimentary rocks up to 20,000 feet thick and lies between the White River uplift to the northeast, the Gunnison uplift to the south, and the Uncompahgre swell to the west (George 1927; Weiner and Haun 1960). Elevations within the Permit Coverage Area range from approximately 5,000 feet above mean sea level (amsl) along the Colorado River to 8,900 feet on Grass Mesa near the western edge of the unit area. Annual precipitation within the Permit Coverage Area ranges from 10 to 40 inches. Softs surrounding the Permit Coverage Area are distributed according to the major soil forming factors including climate (effective moisture and temperature), parent material, topographic position, and slope. The sails table within Appendix C provides a summary of the soil types found within the Permit Coverage Area (including permeability, available water capacity, surface runoff, erosion hazard, and others). Most of these soil types are considered to possess moderate to very severe potential for water erosion. 2.4 Description of Existing Vegetation The existing percent vegetative ground cover for each well pad, section of roadway/pipeline, etc. within the Permit Coverage Area is estimated on each inspection and maintenance report form (discussed in Section 5.4), which are kept with the Site Specific Records (Volume 2 of the Master SWMP). The primary vegetation types in the Mamm Creek Unit are sagebrush shrublands (Artemisia tridentate), pinyon -juniper woodlands (Pinus edulis-Juniperus osteosperma), and Gambel oak shrublands (Quercus gambelii). A small amount of aspen is present at the southern and easternedge of the Project Area. The riparian vegetation includes narrowleaf cottonwood (Populus angustifolia), mountain maple (Acer glabrum), river birch (Betula occidentalis), alder (Alnus incana spp. tenuifolia), dogwood (Cornus sereciea), and Woods' rose (Rosa woodsii). Snowberry occurs in the shrublayer, and orange sneezeweed (Dugaidia hoopesii), tailcup lupine (Lupinus caudatus), field horsetail (Eguisetum arvense), American vetch (Vicia americana), orchardgrass (Dactyl's gloverata), northern bedstraw, geranium (Geranium caespitosum), and yarrow (Achillea lanulosa) occur in the understory. Further to the southwest, numerous blue spruce (Picea pungens) occur along the creek (BLM 2005). Vegetation within the Grass Mesa area primarily consists of hillsides dominated by pinyon -juniper woodlands (Juniperus osteosperma and Pinus edulis) and the mesa top dominated by mixed mountain shrubs, mostly big sagebrush (Artemisia tridentata), Gambel oak (Quercus gambelii), and serviceberry (Amelanchier alnifolia). Several of the proposed locations fall within areas dominated by sagebrush -steppe. Herbaceous and succulent species commonly found in the project area include arrow -leaf balsamroot (Balsamorhiza sagittata), prickly pear cactus (Opuntia polyacantha), prairie lupine (Lupinus wyethff), orange globemallow (Sphaeralcea munroana), and several species of penstemon (Penstemon spp.) and paintbrush (Castilleja spp.) (BLM 2004). C \Documents and Seningsvbusch\Local Settings\Temporary Internet Files\OLK8A1Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-6 Revised February 2008 The entire Mamm Creek Unit has, to some extent, been affected by cheatgrass (downy brome) (Bromus tectorum) (see Invasive, Non -Native Species). It is often associated with sagebrush communities and disturbed areas, especially two -track roads. In the pinyon/juniper woodlands, this species may be found as the understory. Stressed by the recent drought, many pinyon pine trees in the Colorado Plateau have succumbed to an engraver beetle (Ips confusus) infestation. However, in the Mamm Creek Unit, the scattered pinyon pine trees have shown few signs of infestation. 2.5 Identification of Potential Pollution Sources Potential sources of pollution are associated with all phases of the project from the start of construction though interim reclamation and up until final stabilization has occurred. Final stabilization occurs when construction activities have been completed and all disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with a density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. The most common source of pollution during construction issediment resulting from the erosion of recently cleared and/or graded areas, such as cut/fill slopes and soil stockpiles. However, there may be many potential pollution sources at any given site. The following types of conditions that might affect the potential for a pollutant source to contribute pollutants to stormwater (CDPHE, 2007B) shall be evaluated: • The frequency of the activity (i.e., does it occur every day orjust once a month? can if be scheduled to occur only during dry weather?); • Characteristics of the area where the activity takes place (i.e., surface type (pavement, gravel, vegetation, etc.), physical characteristics [site gradients, slope lengths, etc.)); • Ability of primary and secondary containment (fuel tanks, drum storage, etc.) at product storage and loading/unloading facilities to prevent and contain spills and leaks; • Proximity of product storage and loading/unloading facilities to waterways or drainage facilities; • Concentration and toxicity of materials which may to be found in the site's stormwater runoff; and • Contamination of storage facilities/containment with stored materials (i.e., used oil drums or tanks coated with spilled oil). The following items are potential sources of pollutants at the Mamm Creek Unit. Each of the potential sources of pollutants will be controlled using one or more of the following types of BMPs: Erosion Controls, Drainage Controls, Sediment Controls or Non-Stormwater Controls. Descriptions•and details for each of these types of BMPs are provided in the BMP Manual (discussed in Section 3.3). Actual BMPs used at each site are shown on the Site Plans (discussed in Section 5.4). Construction: • All Disturbed and Stored Soils: Erosion Controls, Drainage Controls, Sediment Controls. • Vehicle Tracking of Sediments: Sediment Controls, Non-Stormwater Controls. • Management of Contaminated Soils: Non-Stormwater Controls. • Loading and Unloading Operations: Non-Stormwater Controls. • Outdoor Storage Activities (Building Materials, Fertilizers, Chemicals, etc.): Non-Stormwater Controls. • Vehicle and Equipment Maintenance and Fueling: Non-Stormwater Controls. C:\Documents and Setlingabusch\Local Settings\Temporary Internet Files\OLK8A\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 2-7 Revised February 2008 • Significant Dust or Particulate Generating Processes: Non-Stormwater Controls. • Routine Maintenance Activities Involving Fertilizers, Pesticides, Detergents, Fuels, Solvents, Oils, etc.: Non-Stormwater Controls. • On -Site Waste Management Practices (Waste Piles, Liquid Wastes, Dumpsters, etc.): Non-Stormwater Controls. • Concrete Truck/Equipment Washing, Including the Concrete Truck Chute and Associated Fixtures and Equipment: Non-Stormwater Controls. • Dedicated Asphalt and Concrete Batch Plants: There will be no asphalt or concrete batch plants located within the Permit Coverage Area of this SWMP. • Non -Industrial Waste Sources Such as Worker Trash and Portable Toilets: Non-Stormwater..Controls., Interim/Final Reclamation: • All Disturbed and Stored Soils: Erosion Controls,•Drainage Controls, Sediment Controls. • Vehicle Tracking of Sediments: Sediment Controls, Non-Stormwater Controls. • Vehicle and Equipment Maintenance and Fueling: Non-Stormwater Controls. • Significant Dust or Particulate Generating Processes: Non-Stormwater Controls. • Non -Industrial Waste Sources such as Worker Trash and Portable Toilets: Non-Stormwater Controls. 2.6 Allowable Sources of Non-Stormwater Discharge Allowable sources of non-stormwater discharge within the Permit Coverage Area include the following: • Uncontaminated Springs. Although there are several springs within the Permit Coverage Areas, none of these springs are currently located in areas where soil disturbance will occur. If this changes in the future, the controls used at any such location will be noted with the Site Specific Records. • Landscape Irrigation Return Flow. There are several locations where pipelines cross through irrigated fields. These locations will be treated similarly to any water crossing with the use of an appropriate control which will be noted in the Site Specific Records. • Construction Dewatering. Construction dewatering is described and discussed in Section 3.2.5. • Concrete Washout. Concrete washout is described and discussed in Section 3.2.4. • Emergency Fire Fighting Water. Water used to put out any type of fire is considered an allowable source of non-stormwater discharge. No other non-stormwater discharges are allowed under the Stormwater Construction Permit. Other types of non-stormwater discharges must be addressed in a separate permit issued for that discharge. 2.7 Receiving Water Runoff from disturbed areas during construction will be controlled and/or routed through the use of one or more BMPs, as described later in this plan, prior to being discharged to receiving waters. However, it may be expected that runoff from certain areas will infiltrate into the earth and is not expected to contribute to receiving waters. All streams in the Mamm Creek Unit are tributary to the Colorado River. The project area is located in the Mamm Creek watershed, and drained by Gant Gulch, Middle Mamm Creek, and an unnamed tributary to Middle Mamm Creek. Gant Gulch is tributary to West Mamm Creek. These drainages flow to the northeast into the mainstream portion of Mamm Creek. Mamm Creek is a perennial tributary to the Colorado River. C;Documents and Settingstrbusch\Local Settings\Temporary Internet Files)OLK8AWtamm Creek SWMP (East Dry Hallow Loop) 021808.doc 2-8 Revised February 2008 Floodplain habitat occurs along Middle Mamm Creek and East Mamm Creek, which are perennial streams within the Gant Gulch Area. Dry Hollow Creek is also within the Project Area. Riparian habitat is found along the banks of these streams. The riparian vegetation along Middle Mamm creek extends up to 100 feet on either side of the creek. The riparian habitats associated with Middle Mamm, East Mamm and Dry Hollow Creeks, have been determined to be "non-functional" or "functioning at risk" (M. Kinser, BLM, personal communication, September 2005) (BLM 2005): The Grass Mesa area is located within the watersheds of Dry Creek and Ramsey Gulch. Both of these creeks are tributaries to the Colorado River. Stream flows in the drainages within the Grass Mesa area are generally ephemeral and dependent on seasonal storm and snowmelt runoff. Floodplain habitats occur along the intermittent drainages within Dry Creek and Ramsey Gulch but no floodplain habitat would be impacted by the proposed action. Intermittent drainages occur along Dry Creek and Ramsey Gulch. However, no wetland habitats or riparian vegetation have been documented along these drainages (BLM 2004) 2.8 Master SWMP Permit Area Map and Individual Stormwater Site Plans An overall Master SWMP Permit Area Map is provided as Appendix D. This map is likely to change constantly and will be updated at least annually. The Master SWMP Permit Area Map includes: • Contours and elevations (topography) with existing drainage patterns; • Locations and names of major surface waters such as streams, wetlands, irrigation ditches, canals, etc.; • Master SWMP permit area boundaries; • Construction area locations including roads, pipelines, well pads, compressor station facilities, treatment facilities, water parks, and all other facilities. Individual Stormwater Site Plans (Site Plans) of eachsite (well pad, access- road, section of pipeline, etc:) are provided with the Site Specific Records (Volume 2 of the Master SWMP) Separate Site Plans will be developed for each phase of construction: preconstruction, construction, interim reclamation (if applicable), .. final stabilization (if applicable) and final reclamation (if applicable). These Site Plans include: • Construction site boundaries (this is the area expected to be disturbed by clearing, excavating, grading, or other construction activities); • Contours and elevations (topography) with existing and proposed drainage patterns; • Limits of well pads and locations of reserve pits and well heads (if applicable); • All areas of ground surface disturbance, including areas of cut and fill; • Locations of all potential pollutant sources listed in Section 2.5 (including areas used for vehicle fueling, the storage of materials, equipment, soil, or waste, etc...); • Locations of all minor surface waters and all anticipated allowable sources of non-stormwater discharge (including springs, dewatering, concrete washout, etc...); • Locations of all existing and planned BMPs (including erosion, drainage, and sediment controls); • Locations, names, distances to streams, wetlands, irrigation ditches, canals, other surface waters, etc; • The size, type and location of any outfall(s). If the stormwater discharge is to a municipalseparate. stormwater system, name that system, the location of the storm sewer discharge, and the ultimate receiving water(s). Figures showing typical BMP locations along roadways and pipelines are provided as part of the BMP Manual (discussed in Section 3.3). C:\Documents and Settingsvbusch\Local 2-9 Revised February 2008 Settings\Temporary Internet Files\OLK8A'Mamm Creek SWMP (East Div Hallow Loop) 021808.doc 3.0 Best Management Practices (BMPs) A key component of this Master SWMP is employing BMPs to improve stormwater quality. Local factors will be evaluated to determine what BMPs are suitable and -practical at different locations. BMPs will be employed in different combinations during construction activities and phases as conditions warrant. Due to the fact that this Master SWMP is likely to cover more than one ecosystem (as described in Section 2.4), the selection of BMPs (including type, quantity, sequence/combination, etc.) will vary at each site within the Master SWMP Permit Area. Specific BMPs to be employed at each well pad, road, pipeline, or other facility are identified on the Site Plans, which are kept with the Site Specific Records (Volume 2 of the Master SWMP). 3.1 Erosion, Drainage, and Sediment Control BMPs The primary method for controlling erosion, drainage, and sediment transport consists of minimizing initial disturbance of the soil and ground cover. However, many other methods can also be used. All stormwater- related BMPs will fall under at least one of the following three types of controls: • Erosion Control. Any source control practice that protects the soil surface and/or strengthens the subsurface in order to prevent soil particles from being detached by rain or wind, thus controlling raindrop, sheet, and/or rill erosion. • Runoff Control. Any practice that reduces or eliminates gully, channel, and stream erosion by minimizing, diverting, or conveying runoff. • Sediment Control. Any practice that traps the soil particles after they have been detached and moved by wind or water. Sediment control measures are usually passive systems that rely on filtering or settling the particles out of the water or wind that is transporting them prior to leaving the site boundary. BMPs may also be classified as either structural or non-structural controls: • Structural Control. Handles sediment -laden stormwater prior to it leaving each site. Structural BMPs are used to delay, capture, store, treat, or infiltrate stormwater runoff. Some examples of structural BMPs include sediment traps, diversions, and silt fences. Most Runoff Controls and Sediment Controls can also be classified as Structural Controls. • Non-structural Control. Reduces the generation and accumulation of pollutants, including sediment, from a construction site by stabilizing disturbed areas and preventing the occurrence of erosion. Some examples of non-structural BMPs include revegetation, mulching, and surface roughening. These types of stabilization techniques are not only the most effective method for reducing soil loss, but they are also normally the most cost effective due to low initial cost and reduced maintenance requirements. Most, but not all, Erosion Controls can also -be classified asNon-structural Controls. The Site Plans, as mentioned previously and kept with the Site Specific Records (Volume 2 of the Master SWMP), show the proposed locations of all erosion, drainage, and sediment control BMPs (both structural and non-structural). Detailed descriptions, design criteria, construction specifications, and maintenance information for all BMPs are provided in the BMP Manual (discussed in Section 3.3). 3.2 Non-Stormwater Control BMPs Non-stormwater controls include general site and materials management measures that indirectly aid in the minimization of water pollution. Types of pollution sources include, but are not limited to, litter, oil and grease, hazardous material spills, and sediment. C:\Documents and Settingsirbusch\Local Settings\Temporary Internet Files1OLK8A1Mamm Creek SWMP (East Dry Hallow Loos) 021808 doc 3-1 Revised February 2008 3.2.1 Materials Delivery and Storage The good housekeeping practices listed below will be followed on site during construction and operation: • An effort will be made to store only enough product required for task completion. • All materials stored on site will be stored in a neat and orderly manner in appropriate containers and; where possible, under a roof or other enclosure, and/or within secondary containment areas to avoid contact with stormwater. • Products will be kept in their original containers -with the original manufacturer's label. • Substances will not be mixed with one another unless recommended by the manufacturer. • Whenever possible, all of the product Mil be used before disposing of the container. • Manufacturer's recommendations for proper use and disposal will be followed. Additional information on material delivery and storage is available in the BMP Manual (discussed in Section 3.3). 3.2.2 Material Handling and Spill Prevention In addition to the material storage practices (listed in the previous section) that will be used to reduce the risk of spills or other accidental exposure of materials and substance, the. BMP Manual (discussed in Section 3.3) will provide more detailed information on spill prevention and control. Furthermore, the Spill Prevention, Control and Countermeasure (SPCC) Plan will be followed for the control. of hydrocarbons. In_general, spill prevention and response procedures will include notification (CDPHE 24-hour spill reporting line — 877-518- 5608), clean-up with the use of spill kits and absorbents, and ensuring that materials and wash water can not discharge from the site, and never into a storm drain system or stream. 3.2.3 Vehicle Cleaning, Fueling, Maintenance, and Tracking. Controls As required by EnCana Oil & Gas (USA), Inc. master service agreement(s) and drilling contract(s), contracting companies and/or vendors are required to service all vehicles and equipment prior to entering EnCana facilities. However, in the event maintenance procedures are required at EnCana facilities, all fluids transferred must utilize secondary containment and drip pans to minimize a release of materials and properly dispose or recycle spent materials in compliance with local, state, and federal guidelines. While on site, equipment will be parked, serviced, and fueled within designated areas. Equipment fueling on pipeline rights-of-way will be mobile during active construction. Periodic inspections of equipment and control procedures will be implemented. Selected equipment may be fueled in place using fuel trucks. When necessary, equipment and machinery will be decontaminated at an on-site decontamination area prior to removal from the construction area. Areas will be provided with adequate waste disposal receptacles for liquid as well as solid waste. Vehicle tracking of sediments is not expected to be a problem due to construction scheduling. Construction vehicles will remain on site throughout earth -moving activities. All other vehicles remain in stabilized areas and do not enter the construction area until that area is stabilized. However, applicable BMPs (such as scheduling (to minimize site access), stabilized construction entrances, vehicle cleaning, etc.) will be utilized if sediment tracking does become a problem. In addition to the typical practices listed above, the BMP Manual (discussed in Section 3.3) provides more detailed information on vehicle cleaning, fueling, maintenance, and tracking controls. C:\Documents and Setlingsvbusch\Local Settings\Temporary Internet Files\OLK8AW amm Creek SWMP (East Dry Hallow Loop) 021808 doc 3-2 Revised February 2008 3.2.4 Waste Management and Disposal As required by EnCana Oil & Gas (USA), Inc. master service agreement(s) and drilling contract(s), contracting companies and/or vendors are required to manage all waste generated by their activities at EnCana facilities in compliance with local, state, and federal guidelines. EnCana Oil & Gas (USA) utilizes a periodic inspection program to ensure waste management requirements are fulfilled and inspections are documented. A few of the waste management procedures that will be followed include the following: • Proper bins will be provided for trash collection and disposal in compliance with local, state, and federal guidelines. • Contaminated soils will be placed into a lined and bermed area. Samples of the impacted soil will be collected and a complete characterization analysis will be performed. When applicable, the impacted soil will be sent to a licensed disposal facility. • The contractor will provide portable toilets. Sanitary waste will be regularly collected by a licensed sanitary waste management contractor and disposed of in an approved manner. • In the event that sediment is inadvertently transported off the construction site, it will be collected and returned to the site and placed on the soil stockpile or spread over the construction pad area and compacted. On well pads and access roads concrete washout is used as an interior conductor pipe ballast. Concrete washout water can NOT be discharged to surface waters or to storm sewer systems without separate permit coverage. However, discharge to the ground of concrete washout water from washing of toots and concrete mixer chutes may be authorized by this permit, provided that (CDPHE, 2007a): 1. The source is identified in the SWMP; 2. BMPs are included in the SWMP to prevent pollution of groundwater; and 3. These discharges do not leave the site as surface runoff or to surface waters. Locations where concrete washout activities take place are shown on the Site Plans. Additional waste management procedures, including solid waste, hazardous waste, contaminated soil, concrete washout, and septic and sanitary waste, are included in the BMP Manual (discussed in Section 3.3). 3.2.5 Dewatering Dewatering refers to the mechanical removal of water from an excavation or other structure. Both groundwater and stormwater may require dewatering during construction. Dewatering of pipelines at the completion of hydrostatic testing will be required for most pipeline installations. 3.2.5.1 Groundwater Dewatering Groundwater is very rarely encountered during the construction activities associated with either E&P sites or Midstream Services sites. If groundwater is encountered, it is typically during construction of a pipeline across a stream crossing. These pipelines are either bored under the stream or a flume is utilized. Non-stormwater construction dewatering of groundwater can NOT be discharged to surface waters or to storm sewer systems without separate permit coverage. However, discharges to the ground of water -from construction dewatering activities may be authorized by this permit, provided that (CDPHE, 2007a): C\Documents and Settingstrbusch\Locat Settings\Temporary Internet Files\OLK8A\Mamm Creek SWMP (East Dry Hallow Loop) 021808.doc 3-3 Revised February 2008 1. The source is groundwater and/or groundwater combined with stormwater that does not contain pollutants in concentrations exceeding the State groundwater standards in Regulations 5 CCR 1002-41 and 42; 2. The source is identified in the SWMP; 3. BMPs are included in the SWMP; and 4. These discharges do not leave the site as surface runoff or to surface waters. Dewatered groundwater shall be pumped or diverted to a sediment control BMP prior to discharge to the ground. Locations of groundwater dewatering, as well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs. Additional information on groundwater dewatering is provided in the BMP Manual, discussed in Section 3.3. 3.2.5.2 Stormwater Dewatering The discharge of pumped stormwater (not including groundwater or other non-stormwater sources) from excavations, ponds, depressions, etc., to surface water, or to a municipal separate storm -sewer system is allowed by the Stormwater Construction Permit, as long as the dewatering activity and associated BMPs are identified in the SWMP (including location of the activity), and BMPs are implemented in accordance with the BMP Manual, discussed in Section 3.3 (CDPHE, 2007c). Stormwater that collects in open depressions or trenches during construction activities will be dewatered into - an existing sediment control, such as a detention pond, a sediment trap, or simply into a well -vegetated area to percolate into the ground and catch suspended sediment. The quality source; and location of dewatering, as well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs. Additional information on stormwater dewatering is provided in the BMP Manual, discussed in Section 3.3. 3.2.5.3 Pipeline Dewatering New Department of Transportation (DOT) pipelines are hydrostatically tested with water upon completion of construction. Once the hydrostatic testing has been completed, dewatering of the pipeline must occur. This will involve the insertion of a displacer, commonly referred to as a pig, in the pipeline. The discharge rate will be regulated, and energy dissipation devices, and/or sediment controls will be used, as necessary, to prevent erosion, streambed scour, suspension of sediments, or excessive streamflow. Locations on pipeline dewatering, as well as any BMPs utilized, will be noted on the Site Plans as soon as such dewatering occurs. Additional information on stormwater dewatering is provided in the BMP Manual, discussed in Section 3.3. 3.3 Stormwater Manual of BMPs A Stormwater Manual of Best Management Practices (BMP Manual) is provided as Appendix E. The BMP Manual has been prepared to provide EnCana personnel, contractors, and subcontractors with information on the proper selection, design, installation, and maintenance of BMPs to manage oil and gas related stormwater and to meet federal and state SWMP implementation requirements. The main objectives of the BMP manual are to: • Serve as an easy-to-use guide for selecting, designing„ installing, and maintaining BMPs. • Function as a reference for construction plans and specifications. • Ultimately lead to the avoidance of any net increase in off-site erosion and sedimentation of waters of the U.S. The BMPs within this BMP Manual are organized into four main types of controls for easy reference: Erosion Controls, Runoff Controls, Sediment Controls, and Non-stormwater Controls. Each of these types of controls has been discussed earlier in this section of the SWMP. C:\Documents and SeningsVbusch\Local Settings\Temporary Internet Files \OLK8AWIamm Creek SWMP (East Dry Hallow Loop) 021808.cloc 3-4 Revised February 2008 3.4 Phased BMP Implementation Various BMPs will be implemented and maintained during different phases of the project. A description of each phase is as follows: • Preconstruction. The preconstruction phase involves the installation of BMPs (temporary and/or permanent) around each site perimeter and at discharge points (such as vegetation buffers (no installation required for this BMP), slash, wattles, diversions, sediment basins and reservoirs, etc...). • Construction. The construction phase involves the. stripping. and stockpiling of topsoil, the..excavation and backfill for access roads, pipelines, and well pads, and the installation of additional BMPs (preferably permanent BMPs) to control erosion and sedimentation (such as tracking topsoil piles and the installation of roadside channels, culverts, diversions, etc...). • Interim Reclamation. The interim reclamation phase primarily involves seeding of all disturbed areas not needed during operation of the well pads. However, this phase also involves the installation of any additional permanent BMPs that may be needed, as well as the continued maintenance and inspections of all BMPs until final stabilization occurs. Final stabilization occurs once all surfaces are built on, paved or graveled, and/or a uniform stabilized vegetative cover with a density of 70 percent of pre -disturbance levels has been established or when an equivalent permanent, physical erosion reduction method has been employed. A further explanation of final stabilization is provided as section 4 of this plan. • Final Reclamation. For pipelines, this phase involves seeding of all disturbed areas, and the installation of any additional permanent BMPs that may be needed, as well as the continued maintenance and inspections of all BMPs until final stabilization occurs. For other areas (roads, well pads, facilities, etc...), this phase (which may occur after termination of this permit and under the coverage of a new construction permit) occurs when operation of the area is no longer necessary. In these cases, this phase will include the installation of any additional BMPs required during facility decommissioning as well as the spreading of any remaining topsoil, the application of seed, and the inspection/maintenance of all BMPs until final stabilization occurs. Temporary controls, such as silt fencing, may be used to control sediment and erosion during preconstruction and construction activities. Permanent controls, such as diversions and sediment traps, may also be used during the initial phases of the project. However only permanent controls will be used during interim reclamation and final stabilization. Temporary controls may be converted into permanent controls (such as revegetating a diversion) if needed. The primary control used during interim and final stabilization will be revegetation. Seeding will occur as soon as possible after disturbance of an area is complete. If the seeding is not successful, the area will either be reseeded or other controls will be put in place until reseeding can occur. C:Documents and Settings)rbusch\Local Settings\Temporary Internet Files\OLK8A\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 3-5 Revised February 2008 4.0 Interim Reclamation and Final Stabilization As soon as practicable after construction activities have been completed in a disturbed area, interim (for well pads, or other facilities) or final (for roads and pipelines) reclamation will be started to prevent further erosion of soil from that area. This typically occurs immediately upon completion of earthwork activities. All disturbed areas (except for the surface of dirt roads, those portions covered by pavement or a structure, and those areas used during operation of a well) will be stabilized with permanent controls. The most common measure used to achieve final stabilization is revegetation. Mulching, erosion control blankets, surfacing with gravel or slash, and/or other methods may also be used. Structural controls (such as diversions, berms, and sediment traps) may be revegetated and used as permanent measures to control pollutants in stormwater discharges that will occur after construction operations have been completed. Appendix E includes detailed information on each of the previously discussed BMPs. In addition, a revegetation manual is provided as Appendix B, which provides guidance as to possible methods and materials needed to accomplish revegetation on differing site conditions. The specific BMPs used at each site are shown on the Site Plans which are kept with the Site Specific Records (Volume 2 of the Master SWMP). Final stabilization means that all ground surface disturbing activities at the site have been completed, and all disturbed areas have been either built on, paved, or a uniform vegetative cover has been established with an individual plant density of at least 70 percent of pre -disturbance levels, or equivalent permanent, physical erosion reduction methods have been employed. For purposes of this permit, establishment of a vegetative cover capable of providing erosion control equivalent to pre-existing conditions at the site will be considered final stabilization. Areas developed as stabilized unpaved surfaces as -needed for operation -of the facility after. interim reclamation, will also qualify as "finally stabilized." This includes dirt road surfaces and the portions of the well pad surfaces that cannot be revegetated due to operational necessity, but does not include slopes, ditches, and other areas where revegetation is necessary. Stabilized unpaved surfaces will be prepared in such a way as to prevent ongoing erosion issues. Coverage under the Stormwater Construction Permit may be inactivated for any individual site or a portion/section of that site (i.e. the access road to a well pad) when the area has attained final stabilization and all temporary erosion and sediment control measures associated with that area have been removed. An area will be considered finally stabilized when construction and interim reclamation is complete and when the above final stabilization criteria have been met, even though the site may be disturbed again in the future for final reclamation. However, future land disturbances that follow final stabilization and result in disturbance of one acre or greater (such as final reclamation) will require new permit coverage at that time. Upon final stabilization of any site or portion/section of a site, a signed certification sheet (provided in Appendix F) will be placed into the Site Specific Records binder to replace the Site Plans and the inspection and maintenance records for that area. However, the Site Plans and inspection reports shall be retained in a separate location for a period of three years following final stabilization of the Permit Coverage Area. These documents will be made available to WQCD or EPA upon request and at the time of inspection. G\Documents and Settingsvbusch\Local Settings\Temporary Internet FileskOLKSAWtamm Creek SWMP (East Dry Hallow Loop) 021808doc 4-1 Revised February 2008 5.0 Inspection and Maintenance Inspections and maintenance is an extremely important part of the Stormwater Construction Permit. The Construction Manager will ensure that all stormwater management controls are constructed or applied in accordance with governing specifications or good engineering practices. Experienced teams will be used for construction. A first inspection will occur upon installation of the controls. In addition, all workers on the site will be trained as to the location and use of the controls, especially those controls that will be disturbed as construction proceeds across the site. The goal is to minimize the potential for inadvertent removal or disturbance of BMPs and to prevent the off site transport of sediment and other pollutants. 5.1 Inspection Schedule Inspections are required as soon as the first soil disturbance occurs at the site. Once final stabilization of the site has occurred and the EnCana inspector has filled out the final stabilization certification sheet (see Section 4), inspections are no longer necessary. Specific information regarding inspection schedules are provided in the following sections. 5.1.1 Minimum Inspection Schedule for active sites The minimum inspection schedule applies to those sites under active construction, which includes the period from when the ground is initially disturbed to when construction activity is completed, and also includes the preparation of areas that will be revegetated for interim reclamation. During the Active Site period, a thorough inspection of the site stormwater management system (which includes all utilized BMPs) must be conducted at least every 14 calendar days. Also, post -storm event inspections must be conducted within 24 hours after the end of any precipitation or snowmelt event that causes surface erosion. There are three exceptions to the minimum inspection schedule which are described in detail within the next three sections: post -storm event inspections at temporarily idle sites (inspections required within 72 hburs after a storm), inspections at completed sites (inspections required monthly), and inspections during certain winter conditions (inspections may not be required). Any use of an exception is temporary, and does not eliminate - the requirement to perform routine maintenance due to the effects of a storm event or other conditions that may impact BMP performance, including maintaining vehicle tracking controls and removing sediment from impervious areas. Inspections, as described above, are required at all other times. 5.1.2 Post -Storm Event Inspections at Temporarily Idle Sites Temporarily idle sites are those where there are no construction activities occurring following a storm event. At such sites, post -storm event inspections must be conducted prior to restarting construction activities at the site, but no later than 72 hours following the storm event, and the delay noted in the inspection report. Routine inspections still must be conducted at least every 14 calendar days. 5.1.3 Completed Sites Once construction is completed and the site has been prepared for interim or final stabilization (including completion of appropriate soil preparation, amendments and stabilization practices), the site (or portion of the site) is considered a Completed Site (for purposes of the stormwater permit). Note: only construction activities that result in a disturbance of the ground surface must be completed. Construction activities that can be conducted without disturbance of the ground surface, such as certain well completion activities, would not prohibit a site from otherwise qualifying as a Completed Site. (Completed Sites still require permit coverage until the final stabilization criteria have been met) Completed Sites qualify for a reduced inspection schedule, as the potential for pollution is reduced if the site has been adequately prepared and/or seeded. However, because slopes and other disturbed areas may not C:\Documents and Settingskrbusch\Local 5-1 Revised. February 2008 Settings\Temporary Internet Files\OLKBA\Mamm Creek SWMP (East Dry Hallow Loop1021808.doc be fully vegetated, erosion in these areas still occurs which requires maintenance activities such as regrading and seeding of problem areas. As such, inspections must continue in order to address these situations. During the Completed Site period, a thorough inspection of the site stormwater management system (which included all utilized BMPs) is required at least once every month. The SWMP must be amended to indicate those areas that will be inspected at this reduced frequency. 5.1.4 Winter Conditions Inspections Exclusion Inspections are not required at sites where construction activities are temporarily halted, snow cover exists over the entire site for an extended period and melting conditions posing a risk of soil erosion do not exist This temporary exclusion is applicable only during the period where melting conditions do not exist, and applies to the routine 14 -day and monthly inspections, as well as the post -storm -event inspections. It is typical that when snow cover exists, even at a Completed Site, significant potential for erosion and BMR failure exists when melting does finally occur. Therefore, the site should prepared prior to snow cover to ensure it is as stabilized as possible, and be prepared to perform site maintenance when melt -off occurs, to alleviate any potential problems. Inspection records (see Section 5.4) will document that winter conditions exist and that inspections will be excluded. 5.2 Performing Inspections Inspections will be conducted by qualified personnel on the following areas: • All vegetated areas until 70% of pre -disturbance vegetation levels are reached. • All BMP measures identified in this document. • Construction site perimeter and discharge points. • All disturbed areas. • Areas used for storage of material/waste that are exposed to precipitation. • Other areas determined to have a significant potential for stormwater pollution, such as demolition areas or concrete washout locations, or locations where vehicles enter or exit the site. These areas will be inspected to determine if there is evidence of, or the potential for, pollutants leaving the construction site boundaries, entering the stormwater drainage system, or discharging to state waters. All BMPs will be evaluated to determine if they still meet the design and operational criteria in the SWMP and if they continue to adequately control pollutants at the site. Any BMPs not operating in accordance with Appendix E of this SWMP will be addressed as soon as possible, immediately in most cases, to minimize the discharge of pollutants, and the Site Specific Records will be updated. 5.3 Maintenance Maintenance activities will ensure that all control measures are functioning at optimum levels and that all procedures and techniques will be in proper working order during a runoff evertor spill condition. Any • maintenance, repairs, or replacements deemed necessary after required inspections will be corrected as soon as possible (if not immediately), to minimize the discharge of pollutants. Certain maintenance procedures may take a short period of time to make sure that all the proper safety precautions are in place, such as a 'one call" for utilities, if the maintenance involves excavation of sediment located above a buried pipeline. Maintenance will include, but is not limited to: • Pickup or otherwise prevention of litter, construction debris, and construction chemicals from becoming a pollutant source prior to anticipated storm events. • Removal of sediment from silt fences, sediment traps, and other sediment controls. C:\Documents and SeningsVbuscMLocal Settings\Temporary Internet Files \OLK8AWamm Creek SWMP (East Dry Hallow Loop) 021808 doc 5-2 Revised February 2008 • Reseeding of any bare spots where vegetation has failed to establish. • Repairs and/or adjustments to any erosion and sediment control that is deteriorating or found to be performing inadequately. Detailed maintenance requirements for each BMP are identified in Appendix E. When maintenance is required, the following process will typically be followed: 1. Perform inspections according to the minimum inspection schedule discussed in Section 5.1. 2. Note the need for maintenance on the inspection and maintenance report form. 3. If necessary, collect the additional materials and/or resources needed to perform the maintenance . activity. 4. Perform maintenance and note the date performed on the inspection and maintenance report form. 5. Re -inspect the area to ensure compliance. 5.4 Documenting Inspections and Maintenance The permittee must document inspection results, maintenance activities, and maintain a record of the results for a period of 3 years following expiration or inactivation of permit coverage. A typical inspection and maintenance report form is provided in Appendix G. Although the site may have a phased construction schedule, all construction areas may be inspected at the same time and on one form. Each well pad, road, pipeline, or other facility which is inspected shall be clearly written on the inspection form. Inspection reports will include the following: • Date of inspection, name of inspector, and title of inspector • The area inspected (Site ID), type of area (well pad, access road, pipeline, etc.), phase of construction (preconstruction, construction, etc.), and type of inspection (active, completed, etc.) • Site specific information including disturbed area, soil type(s), ecosystem/vegetation type(s), receiving waters, etc. • Vegetation observations including the percent pre -disturbance vegetation and whether or not vegetation growth has reached 70% of pre -disturbance levels • Specific inspection requirements (all BMPs and areas of potential pollutant sources) • Observed conditions including: - Location(s) of discharges of sediment or other pollutants from the site. Location(s) of BMPs that need to be maintained Location(s) of BMPs that failed to operate as designed or proved inadequate fora particular location - Location(s) where additional BMPs are needed that were not in place at the time of inspection • Description and date(s) of corrective action(s) taken, and measures taken to prevent future violations • Changes necessary to the SWMP A hand drawn Site Plan shall be included, if necessary, to show the location(s) of any observed condition (as listed above). C:\Documents and SettingslrbuschlLocal Settings\Temporary Internet Files\OLK8AWamm Creek SWMP (East Div Hallow Loop) 021808.doc 5-3 Revised February 2008 After adequate corrective action(s) has been taken and recorded, or where a report does not identify any incidents requiring corrective action, the report will contain a signed statement indicating the site is in compliance with the permit to the best of the signer's knowledge and belief. All completed inspection and maintenance report forms (a blank copy of which is included in Appendix G) are kept with the Site Specific Records (Volume 2 of the Master SWMP). C:Documenls and Settings\rbusch\Local Settings\Temporary Internet Files\OLK8Awlamm Creek SWMP (East Dry Hallow Loop) 021808doc 5-4 Revised February 2008 6.0 Plan Revisions and Retention When BMPs or site conditions change, the Master SWMP (Volume 1) and/or the Site Specific Records (Volume 2) will be amended to accurately reflect the actual field conditions. Examples include, but are not limited to, removal of BMPs, identification of new potential pollutant sources, addition of BMPs, modification of BMP installation/implementation specifications or maintenance procedures, and changes in items included in the Site Plans. Changes to the Master SWMP (Volume 1) shall be noted on the SWMP Revisions log at the front of this plan. Changes to individual site conditions will be noted in the Site Specific Records (Volume 2) on the applicable inspection and maintenance report form. All changes in Volume 1 and Volume 2 shall be made prior to actual changes in the site conditions, except for responsive SWMP changes, which shall be made immediately after changes are made in the field or as soon as practical, but in no case more than 72 hours after the change(s) in BMP installation and/or implementation occur at the site that require development of materials to modify the SWMP. At a minimum, the Master SWMP willbe updated annually. The Master SWMP and the Site Specific Records will be retained at the EnCana field office in Parachute during active construction and site inspections to ensure accurate implementation and maintenance of BMPs, and required revisions. These documents will be retained for a period of three years following final stabilization of the Permit Coverage Area. These reports will be made available to WQCD or EPA upon request and at the time of inspection. C \Documents and Setlingstrbusch\Local Settings \Temporary Internet Files\OLKBAWamm Creek SWMP (East Dry Hallow Loop) 021808 doc 6-1 Revised February 2008 7.0 Inactivation Notice When all disturbed areas associated with the Stormwater Construction Permit have reached "final stabilization" (as described in Section 4), all temporary erosion and sediment control measures have been removed, and all components of the SWMP are complete, the area no longer requires coverage under the permit terms. At that time, EnCana will submit an Inactivation Notice that closes this permit to the WQCD upon final stabilization of all areas covered by the permit. A blank copy of this form is included in Appendix H of this document. Upon receipt of the Inactivation Notice, the WQCD will provide written confirmation that coverage under this permit has been terminated. This historical documentation will be maintained at the EnCana field office in Parachute for a period of at least three years following termination of permit coverage. C:\Documents and Settingsvbusch\Local Settings\Temporary Internet Files\OLK8A1Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc 7-1 Revised February 2008 8.0 Signature "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted, to the best of my knowledge and belief, is true, accurate, and complete. 1 am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment or knowing violations." Brad Ankrum Piceance Midstream Operations Manager Printed name Title z-/, /° r Signature Date Lindsey Kruckenberq South Piceance Midstream Stormwater Inspector Printed name Title ,1.,., __ TJrTf LF; Signature Date C:\Documents and Settings rbusch\Local Settings\Temporary Internet Files\OLK8AW amm Creek SWMP (East Dry Hallow Loop) 021808.doc 8-1 Revised February 2008 9.0 References CDPHE, 2007a. CDPS General Permit, Authorization to Discharge under the Colorado Discharge Permit System. Colorado Department of Public Health and Environment. Water Quality Control Division: Issued May 31, 2007. http://www.cdphe.state. co. us/wq/Perm itsUn it/stormwater/SWConstructionPerm it. pdf CDPHE, 2007b. General Permit Application and Stormwater Management Plan Preparation Guidance. Colorado Department of Public Health and Environment. Water Quality Control Division. Revised July, 2007. http://www.cdphe.state.co.us/wq/PermitsUniUstormwater/SWConstructionApplication.pdf CDPHE, 2007c. Rationale. Colorado Department of Public Health and Environment. Water Quality Control Division. 2007. http://www.cdphe.state. co. us/wq/PermitsUniUstormwater/S WConstructionRationale. pdf CDPHE, 2007d. Stormwater Fact Sheet — Construction at Oil and Gas Facilities. Colorado Department of Public Health and Environment. Water Quality Control Division. Revised July, 2007. http://www.cd phe.state.co. us/wq/PermitsUniUstormwater/OGfactsheet. pdf George, R.D. 1927. Geology and Natural Resources of Colorado. University of Colorado, Boulder, CO. Mutel, C.F., and Emerick, J.C., 1992. From Grassland to Glacier- --The Natural History, of Colorado and the Surrounding Region. U.S. Department of Interior, Bureau of Land Management. 2004. Environmental Assessment of the Grass Mesa Geographic Area Plan. EA# C0140-2004-081EA. Glenwood Springs Energy Office, Colorado. Online version available at: http://www.blm.gov/co/st/en/fo/gsfo/GSFO MasterPlansOfDevelopment.print.html U.S. Department of Interior, Bureau of Land Management. 2005. Environmental Assessment of the Gant Gulch Geographic Area Plan. EA# C0140-2005-134EA. Glenwood Springs Energy Office, Colorado. Online version available at: http://www.blm.gov/co/st/en/fo/gsfo/GSFO MasterPlansOfDevelopment.print.html USEPA, 1990. NPDES Stormwater Regulations, 40 CFR Parts 122.26. U.S. Environmental Protection Agency. Weiner, R.J., J.D. Haun. 1960. Guide to the Geology of Colorado_ Geological. Society of America. C \Documents and Settings)rbusch\Local Settings\Temporary Internet Files\OLKSA\Mamm Creek SWMP (East Dry Hallow Loop) 021808 doc Revised February 2008 11111111111111111111111111111111111111111111111111111111 633882 08/11/2003 04:42P B1504 P296 M ALSOORF 2 of 3 R 16.00 0 61.00 GRRFIELD COUNTY CO Exhibit A A parcel of land located In Sections 10 and 11, Township 7 South, Range 92 west of the Sixth Principal :Meridian, Garfield County, Colorado. said parcel is more particularly described as follows: Beginning at a point on the North boundary of the Southeast Quarter of the Northeast Quarter of said Section 10, whence the Northeast Corner of said Southeast Quarter of the Northeast Quarter bears North 89°14'56" East a distance of 442.03 feel and all the following bearings contained herein are cognate thereto; Thence North 89°14'56" East a distance of 442.03 feet to said Northeast corner; Thence South 24°27'05" East, a distance of49.61 feet; Thence South 57025'53" East, a distance of 264.12 feet; Thence South 36°29'56" East, a dlsince of 127.30 feet; Thence south 29°43'34" East, a distance of 1.20.50 feet; 'thence South 41"51'57" East, a distance of 129.77 feet; Thence South 62°16'17" East, a distance of 70.22 feet; Thence South 40°49'36" East, a distance of 303.37 feel; Thence South 57°44'07" East, a distance of 116.51 feet; Thence South 45°50'02" East, a distance of 87,04 feet; Thence South 17'41'59" East, a distance of 145.18 feet; Thence South 40026'13" East, n distance of 63.38 feet; Thence North 48°24'50" East, a distance of 168.92 feet; 'thence North 73"12'49" East, a distance of 135,01 feet; Thence South 75°45'45" East, a distance of 165.93 feet; Thence North 51'56'13" East, a distance of 456,79 feet; Thence North 03°17'16" {Vest, a distance of 537.35 feet; 'thence South 28°51'16" East, a distance of 569.73 feet; Thence Norlh 45005'33" East, a distance of 907.39 feet; Thence North 00°19'57' East, a distance of 25.85 feet; Thence South 89"44'24" West, a distance of 1640.94 feet; Thence North 05"36'15" West, a distance of 779.56 feet; Thence North 16°28'49" East, a distance of 307.50 feet; Thence North 10025'36" West, a distance of 49.89 feet; Thence North 16042'58" West, a distance of 64.13 feet; Thence North 35"46'27" West, it distance of 8234 feet; Thence North 01152'06" East, a distance of 87.55 feet; Thence North 24°32'57" East, a distance of 397.44 feet; Thence North 76°17'11" West, a distance of 1775.56 feet; Thence South 01"57'03" East, a distance of 441.81 feet; Thence South 01046'28" East, a distance of 142.74 feet; Thence South 37°05'43" East, a distance of 225.67 feel; Thence North 89'16'40" East, a distance of 69.02 feet; 'I'Iionce South 00°04'32" East, a distance of 881.81 feet; Thence South 08°24.35" Wcsl, a distance of327.51 feet; Thence South 12°48'32" East, a distance of 143.34 flet to the point al beginning. County of Garfield, State of Colorado TOGETHER WITH, BUT WITHOUT WARRANTY, FOUR SHARES OF STOCK IN TFIE DIVIDE CREEK HIGH LINE DITCH COMPANY. 1/Hill 111111111111(111 1111111111111111 1011111 /III /III 633862 08/11/2003 04:42P 81504 P295 11 RLSDORF 1 of 3 R 16.00 D 61.00 GARFIELO COUNTY CO Recorder WARRANTY DEED THIS DEED, Made this 7th day of August, 2003, between 1'eter S. Sherowski and Nancy Sherowski of the County of Garfield and Slate of Colorado, grantor(s), and EnCana OR & Gas (USA) Inc., a Delaware Corporation whose legal address is 950 17th Street, Ste 2600 Denver, CO 80202 , of the County of Denver and State of Colorado, granlee(s): WITNESSETH, Thal the grantor(s), for and in consideration of the sum of TEN and 00/1OOths DOLLARS, the receipt and sulliciency of which is hereby ocknosvledged, have granted, bargained, sold and conveyed, and by these presents do grant, bargain, sell, convey and confirm, unto the grantee(s), their heirs and assigns forever, all the real property, together with improvements, if any, sinuate, lying and being in the County of GARFIELD and State of Colorado, described as follows: See Exhibit A attached hereto and made a part hereof. also known as street and number as: 6526 County Road 331, Silt, CO 81652 assessors schedule or parcel number: R231154,2401-112-00-219 TOGETHER with all and singular the hereditaments and appurtenances thereunto belonging, or in any wise appertaining, and the reversion and reversions, remainder and remainders, rents, issues, and profits thereof, and all. the estate, right, interest, claim and demand whatsoever of the grantor(s), either in law or equity, of, in and to the above bargained premises, with the hereditaments and appurtenances. '1'0 HAVE AND TO HOLD the said premises above bargained and described, with the appurtenances unto the grantee(s), heirs and assigns forever. And the grantor(s), for themselves their heirs, and personal representatives, do covenant, grant, bargain and agree to and with the grantee(s), their heirs and assigns, that at the time of the enscaling and delivery of these presents are well seized of the premises above conveyed, have good, sure, perfect; absolute and indefeasible estate of inheritance, in law, in fee simple, and have good right, full power and lawful authority 10 grant, bargain, sell and convey the same in manner and form as aforesaid, and that the same are free and clear from all former and other grants, bargains, sales, liens, taxes, assessments, encumbrances and restrictions of whatever kind or nature soever, except those matters as set forth on Exhibit "IP attached hereto and made n part of. The grantor(s) shall and will WARRANT AND FOREVER DEFEND the above -bargained premises in the quiet and peaceable possession of the grantee(s), their heirs and assigns, against all and every person or persons lawfully claiming the whole Lorr any part thereof. f. IN SS W OF, The grantor(s) have executed this deed on the date first written above. YYYId C.r,F.� re. Pe Gr S. Sberowski Nancy Sher aski STATE OF COLORADO, County of Garfield The foregoing instrument was acknowledged before me this 7t1 day of August, 20D3 by Peter S. Sherowski and Nancy Sherowskl. My commission expires: 08/06/06 Notary) PPuubliio3 m..0..0. k m co,e_ ,x050 44. i33 am Address of Person Croat ine Newlr treated Legal 1puu (13845.106.5. C. 11.5 ) No. 36. nem. 4-94. WARRANTY DEED sSa V., 40 For, S000?Cn Rev. 14/17.91 1till 11111 111111 11111 111 1111111 11111111 11111 11111111 633882 08/11/2003 04:42P B1504 P297 M BLSDORF 3 of 3 R 16.00 D 61.00 GARFIELD COUNTY CO Exhibit "13" 1. faxes for the year 2003 and subsequent years. 2. Right ofa proprietor ofa vein or lode to extract and remove his ore therefrom should the same be found to penetrate or intersect the subject property as reserved in the United States Patent recorded November 4, 1909 in Book 71 at Page 385, recorded August 2, 1910 in Book 71 at Page 427, recorded January 5, 1911 in Book 71 at Page 449, recorded September 26, 1911 in Book 71 at Page 496, recorded February 20, 1912 in Book 92 at Page 281, recorded October 13, 1922 in Book 112 at Page 551, recorded February 3, 1923 in Book 112 at Page 554, recorded November 13, 1923 in Book 112 at Page 407, and recorded June 12, 1952 in Book 264 at Page 425. 3. Right of way for ditches and canals constructed by the authority of the United States as reserved in the United States Patent recorded November 4, 1909 in Book 71 at Page 385, recorded August 2, 1910 in Book 71 at Page 427, recorded January 5, 191 I in Book 71 at Page 449, recorded September 26, 1911 in Book 71 at Page 496, recorded February 20, 1912 in Book 92 at Page 281, recorded October 18, 1922 in Book 112 at Page 551, recorded February 3, 1923 in Book 112 at Page 554, recorded November 13, 1923 in Book 112 at Page 407, and recorded June 12, 1952 in Book 264 at Page 425. 4. Right of way for the Doulton Ditch as set forth in the Deed recorded January 25, 1900 in Book 69 at Page 213. 5. Strip ot'land 15.00 feet in width conveyed in the Deed recorded March 6, 1917 in Book 100 at Page 491. 6. Reservation of an undivided one-half interest in and to all oil, gas and other minerals as reserved by The Federal Land Bank of Wichita in the Deed recorded January 2, 1942 in Book 205 at Page 388, and any and all assignments thereof or interests therein: 7. Reservation of an undivided three-fourths interest in and to all oil, gas and other minerals as reserved by John P. Kinney, Edward L. Kinney and Joseph T. Kinney in the Dced recorded February 27, 1958 in Book 307 at Page 133, and any and all assignments thereof or interests therein. 8. Reservation of an undivided one-half interest in and to all oil, gas and other minerals as reserved by Charles F. Maday in the Deed recorded August 18, 1958 in Book 311 at Page 48, and any and all assigmnents thereof or interests therein. 9. Reservation of an in excess ofa one sixteenth interest in and to all oil, gas and other minerals as reserved by Brinkley 13. Brown in the Decd recorded June 4, 1962 in Book 342 at Page 310, and any and all assignments thereof or interests therein. 10. Reservation of an undivided three-fourths interest in and to all oil, gas and other minerals as reservedby W.R. Rees and (Milan. L. Rees, dba Rees and Sons, in the Dced recorded July 26, 1963 in Book 352 at Page 32, and any and all assignments thereof or interests therein. 11. Reservation of an undivided one-fourty-eighth interest in and to all oil, gas and other minerals as reserved by Brinkley!). Brown in the Deed recorded July 26, 1963 in Book 352 at Page 35, and any and all assignments thereoCor interests therein. 12. Reservation of an undivided one-half interest in and to all coal,oil, gas and otherminerals as reserved by William K. Flynn in the Deed recorded May 30, 1972 in Book 431 at Page 274, and any and all assignments thereof or interests therein. 13. Reservation of an undivided one-half interest in and to all coal, oil, gas and other minerals as reserved by Thomas Flynn in the Deed recorded May 30, 1972 in Book 431 at Page 277, and any and all assignments thereof or interests therein. 14. Easement and right of way for road purposes as described in the Dced recorded July 25, 1957 in Book 302 at Page 175. 15. Rights of way as granted to Holy Cross Electric Association, Inc., in the instruments recorded October 20, 1981 in Book 583 at Page 714, recorded February 22, 1993 in Book 855 at Page 198 under Reception No. 444405, recorded July 23, 1996 in Book 986 at Page 329 under Reception No. 496170 and recorded December 5, 1996 in Book 1002 at Page 344 under Reception No. 502024. 16. Tenns, conditions and provisions of Contract for Electric Service recorded February 22, 1993 in Book 855 at Page 197, recorded August 2, 1993 in Book 870 at Page 878, and recorded June 19, 1996 in Book 982 at Page 311. 17. Easements and rights of way as contained in instruments recorded January 16, 1979 in Book 521 at Pagc 765, recorded January 16, 1979 in Book 521 at Page 785, recorded September 4, 1980 in Book 555 at Page 138, recorded December 28, 2001 in Book 1316 at Page 606 under Reception No. 594607, rerecorded January 29, 2002 in Book 1325 at Page 219 under Reception No. 596532 and recorded December 28, 2001 in Book 1316 at Page 613 under Reception No. 594608. 58. Terms, conditions, provisions, obligations, easements and rights of way as contained in Mutual Road Easement Agreement recorded July 5, 1996 in Book 984 at Page 201 under Reception No. 495420. 19. Easement and right of way for access and utility purposes as granted to Stephanie Dietrich and MichaelDietriehin the Deed recorded December 12, 1996 in Book 1003 at Page 36 under Reception No. 502251. 20. Easements and rights of way for roads, sheets, highways, driveways, trails, ditches, canals, pipelines and utility tines as constructed and in place. 21. Any and all loss, damage and/or adverse claims arising from or due to fences or fencelines encroaching from or onto adjoining tracts of land. SYS N9...1 fun 3500x0 Rev. 11517/07 F11E Tank Storage Yard Adjacent Landowners T7S, R92W Sec. 2: Tract in S2SW Sec. 3: Tract in SESE 240103400065 Rick & Courtney Arbaney & Tiffany Kay Bevan 970-876-0795 Orrin D., Cindy L., & Brandon F. 240110100217 Moon Garfield 240111200206 Robert L. & Casey M. Walter Garfield 240111100177 S&P Thompson Family Trust T7S, R92W, Sec. 10: Tract in NE/4 s ; T7S, R92W, Sec 11: Tract in NWSW, SWNW IT7S, R92W, F11 E Tank Storage Yard Mineral Interest Owners: Altman Family Limited Partnership 2QUIAT LLC Stephen J Brown Laura Luke Marshall Quiat Trust Magic M & R LLC LEFT HAND RESOURCES Mark A Huttner & Cathlyn J Huttner Farm Credit Bank of Wichita Virginia Brown Dunfee Cain Brinkley B Brown III Estate MAP2003-NET Kristine M Peterson Barrett D Baker BJJ Partners Shannon Brown Beavers BAY MINERALS LLC Devra Altman Mimonte LLC (May Kwok -Keating) Gerard C Gagne Jr & Nancy K Jacobsen JT FOR OFFICIAL. USE ONLY: DISCLOSURE OF SITE LOCATIONS IS PROHIBITED (43 CFR 7.18) Report on the Class 1 Cultural Resource Inventory for a Limited Impact Review on Private Lands for the Proposed Frac Staging Area for the F11E Well Pad in Garfield County, Colorado, for EnCana Oil and Gas (USA) Inc. GRI Project No. 2923 24 March 2009 Prepared by Carl E. Conner (Principal Investigator) and Barbara Davenport Grand River Institute P.O. Box 3543 Grand Junction, Colorado 81502 I3LM Antiquities Permit No. C-52775 Submitted to Board of County Commissioners Garfield County, Colorado Abstract At the request of EnCana Oil and Gas (USA) Inc., Grand River Institute conducted a Class 1 cultural resources inventory for a Limited Impact Review in relation to an anticipated Special Use Permit Application with Garfield County for the proposed Frac Staging Arca for the F11 E Well Pad project. The block study area (less than 10 acres) and is located between Dry Hollow and Wcst Divide Creeks about 5.5 miles south of Silt, Colorado. The Class I inventory was undertaken to ensure the project's compliance with county, state, and federal laws and regulations governing the identification and protection of cultural resources on privately owned lands that will be affected by a government action. This work was performed under State of Colorado Antiquities Permit No. 2008-63. The purpose of the cultural resources investigation was to identify previously recorded resources within or near the project arca that may be adversely affected by the proposed action and to evaluate the potential of additional such resources in the project arca. The Class 1 files search and report preparation were performed during the 23r`' and 240h of March 2009. The nearest recorded cultural resources (5GF261 and 5GF247) both occur over a mile from the proposed project area. Also, the proposed project will be constructed on lands subject to modern cultivation. Accordingly, a determination of "no effect" for the project is recommended pursuant to Section 106 of the National Historic Preservation Act (36 CFR 800). ii Table of Contents Introduction 1 Location of the Project Area 1 Environment 1 Paleoclimate 3 Files Search Results 4 Archaeological Assessment of Cultural Resources 6 Relevant Historical Background post -1880 8 Summary and Recommendations 9 References 11 List of Figures and Tables Figure 1. Project location map 2 Table 1. List of projects previously conducted near the study area 4 Table 2. List of previously recorded cultural resources near the study area 5 iii Introduction At the request of EnCana Oil and Gas (USA) Inc., Grand River Institute conducted a Class I cultural resources inventory for a Limited Impact Review in relation to an anticipated Special Use Permit Application with Garfield County for the proposed Frac Staging Area for the Fl IF Well Pad project. The block study area (<10 acres) is located on private land between Dry I lollow and West Divide Creeks. This work was performed under State of Colorado Antiquities Permit No. 2008-62. Carl E. Conner, Principal Investigator, was assisted by archaeologist Barbara J. Davenport. The Class I files search and report preparation were performed during the 23' and 24th of March 2009. The Class I inventory was undertaken to ensure the project's compliance with state and federal legislation governing the identification and protection of cultural resources on privately owned lands that will be affected by a government action. It was done to meet requirements of the National Historic Preservation Act (as amended in 1992), the National Environmental Policy Act of 1969 (42 U.S.C. 4321), the Federal Land Policy and Management Act of 1976 (43 U.S.C. 1701), and the Archaeological Resources Protection Act of 1979 (16 U.S.C. 470aa et seq;, as amended), and Article 80.1, Colorado Revised Statutes. These laws are concerned with the identification, evaluation, and protection of fragile, non-renewable evidence of human activity, occupation, and endeavor reflected in districts, sites, structures, artifacts, objects, ruins, works of art, architecture, and natural features that were of importance in human events. Such resources tend to be localized and highly sensitive to disturbance. All work was performed according to guidelines set forth by the Office of Archaeology and I listoric Preservation (OAI IP) of the Colorado Historical Society. Location of the Project Area The study area is located approximately 5.5 miles south of Silt, Colorado. It lies in T. 7 S., R. 92 W., Section 11; 6th P.M. (Figure 1). Environment The project area is within the Piceance Creek Basin, one of the major geologic subdivisions of Colorado. The Piceance Creek Basin is an elongate structural downwarp of the Colorado Plateau province that apparently began its subsidence approximately 70 million years ago during the Laramide Orogeny. Sediments from surrounding highlands were deposited in the basin, accumulating to a thickness of as much as 9000 feet by the lower Eocene epoch, when subsidence ceased. Regional uplift occurred in the Late Tertiary, and erosion of the area has continued since (Young and Young 1977:43-46). The Wasatch formation underlies the study area. It consists of a series of interbedded variegated mudstones, sandstones, and siltstones of varying colors --brick red, tan, white, and purple. Forming after a period of erosion, the Wasatch is the first extensive continental deposit following those of the Cretaceous -age Mesaverde Group. 1 Composite Quadrangle Maps Gibson Gulch and Hunter Mesa (1963/1987) Garfield County - Colorado U.S.G.S. 7.5' Series (topographic) Scale 1:24000 Contour Interval 40 Feet T. 7 S., R. 92 W., 6th P.M. Zone 1.3 NAD 1983 A 1 _ ti .cam 5445 •, 6157 / r • N 36 Proposed,' Area of Disturbance Private }• /Land- f• BLM f,„, i \._' ..hand f61s> • .s. Figure 1. Project location map for the Class I cultural resources inventory report for the proposed frac staging area for the F 11 E well pad in Garfield County, Colorado for EnCana Oil & Gas (USA) Inc. Projectarea is indicated. [GRI Project No. 2923, 3/24/09] 2 Sediments are stream, floodplain, and swamp deposits. In the west 1.0 mile portion of the study area, Quaternary gravel deposits overlay the Wasatch formation. The project area rests on benchland south of the Colorado River on a gently sloping ridge that lies between Dry Hollow and West Divide Creeks. Elevation averages6160 feet. This relatively low elevation is host to a cool semiarid climate where temperatures can drop to -10 degrees F during the winter and summer temperatures may reach 100 degrees F; there is a maximum of 120 frost free days and the annual precipitation is about 12 inches. The surrounding higher elevations are characterized as cooler and moister. Annually, the high mountain temperatures could average 5 degrees cooler and the precipitation as much as 14 inches greater that the surrounding low elevations (USDA 1978:244). There are several generalized vegetation communities in the area including riparian along the creeks, big sage and saltbush shrubland in the valley bottoms, and juniper/oak woodland on the surrounding mountain slopes. However, the prehistoric streamflow and habitats along Dry Hollow and West Divide Creeks have been significantly altered by historic EuroAmerican water diversions, reservoirs, and irrigation of agricultural fields. The valley bottoms have also changed due to infringement by pipelines, gravel operations, roadways and bridges. Ranchers currently use the area primarily for livestock grazing. Ground visibility ranges from 20% in the relatively recently undisturbed areas to about 90% in the cultivated fields and along the roads. These communities support a variety of wildlife species. Mule deer, elk, coyote, and black bear are common, as are cottontail rabbits, and various rodents. Mountain lion, bobcat, fox, skunk, badger, and weasel are also likely inhabitants. Bird species observed in the area include the wild turkey, jay, raven, red -shafted flicker, long-eared owl, and various raptors. Although the present day land use of the project area (including energy development, grazing, ranching and farming) has pushed some of the large mammals into the surrounding mountains, deer and wild turkeys make heavy use of the cultivated fields during the months of colder temperatures. Also, the creeks contain several beaver ponds and wetlands that are supported primarily from snowmelt, groundwater, springs, and irrigation runoff. Palcoclimate Relatively small changes in past climatic conditions altered the exploitative potential of an area and put stress upon aboriginal cultures by requiring adjustments in their subsistence patterns. Therefore, reconstruction of paleoenvironmental conditions is essential to the understanding of population movement and cultural change in prehistoric times (Euler et al. 1979). To interpret whatever changes are seen in the archaeological record, an account of fluctuations in past climatic conditions must be available or inferences must be made from studies done in surrounding area. Generally, only gross climatic trends have been established for western North America prior to 2000 BP (Antevs 1955; Berry and Berry 1986; Mehringer 1967; Madsen 1982; Wendlund and Bryson 1974; Peterson 1981). Scientific data derived from 3 investigations of prehistoric cultures and geoelimatic and bioclimatic conditions on the southern Colorado Plateau over the past two millennia have achieved a much greater degree of resolution (Dean et al. 1985). Files Search Results Cultural resource investigations in the region have yielded surface diagnostic artifacts and excavated cultural materials consistent with the regional cultural history. Evidence provided by chronometric diagnostic artifacts and radiocarbon analyses indicate regional occupation during the Paleoindian Era, Archaic Era, Formative Era, and Protohistoric Era. Historic records suggest occupation or use of the region by EuroAmerican trappers, settlers, miners, and ranchers as well. Overviews of the prehistory and history of the region are provided in documents published by the Colorado Council of Professional Archaeologists' entitled Colorado Prehistory: A Contcxt for the Northern Colorado Plateau (Reed and Metcalf 1999), and by the Colorado I listorical Society entitled Colorado Plateau Country Historic Context (Husband 1984). A file search for known cultural resources within the project area was made through the Colorado Historical Society's Office of Archaeology and Historic Preservation. This review identified seven reports that have been done in the general area, which are listed in Table 1. Table 1. List of projects previously conducted within about 1.0 mile of the study area. Project # Title/ Author/ Date/ Contractor MC.R.NR24 Title: Paleontological Resources Evaluation: West Divide Project Author: Sloan, Robert E., Joseph 11. Hartman, Laurie J. Dempsey, Martha E. Jordan, and Eddie 13. Robertson Date: 03/01/1980 Contractor: Robertson Research, Inc. for the Bureau of Reclamation, Upper Colorado Region GF.LM.NR143 Title: Arkla Exploration of Federal 1-10 Well and Access Author: Burchett, Tim Date: 07/30/1980 Contractor: Powers Elevation for Arkla Exploration And the Bureau of Land Management GF.LM.NR526 GF.LM.NR Title: Gibson Gulch Firewood Sale (S#794) Author: Williams, Paul R. Date: 04/26/1982 Contractor: Bureau of Land Management, 4 Project # Title/ Author/ Date/ Contractor MC,LM.R16 Title: A Cultural Resource Inventory of Northern Geophysical Seismic Explorations near Battlement Mesa, Mesa and Garfield Counties, Colorado (S111092) Open Camp Author: Metcalf, Michael D. 5GF.261 Date: 10/01/1989 Needs Data - Field Contractor: Metcalf Archaeological Consultants, Inc. for Northern Geophysical Seismic Explorations Inc. GF.LM.R276 Title: KLT Gas, Inc., Castle Springs 2004/2005 Geographic Area Plan Class lii Cultural Resource inventory Garfield County, Colorado Addendum: a Proposed Pipeline Realignment and Relocation of Pad C Author: McDonald, Kae Date: 12/01 /2003 Contractor: Kae McDonald, Ph.D. Consulting Archaeologist for KLT Gas, Inc. The files search identified the nearest recorded cultural resources. These consist of two sites that occur between one and two miles from the present study area (Table 2). Table 2. List of previously recorded sites within about 1-2 miles of the project urea. 1 Site ID Site Type Assessment -� 5GF.247 Open Camp Needs Data - Field 5GF.261 Open Camp Needs Data - Field Archaeological Assessment of Cultural Resources along the North Edge of Grand Mesa Previous archaeological studies in the general vicinity have suggested regional occupation for as long as 8000 years, although recently an inventory of block units east of this study area within the Doghead GAP (Conner et al. 2006) provided direct evidence of the presence of Foothill -Mountain Paleoindian occupation at 5GF1323, which pushes the regional prehistoric occupation dates back to about 10,000 yr BP. Historic records also indicate a permanent Euro - American presence in the region began as early as the late 1880's. Notably, the prehistoric sites in the river corridor have been impacted by the 130 year occupation and use of the area by EuroAmericans. Notably, many of the newly and previously recorded resources in the general area indicate it was intensively occupied during the Protohistoric Era. Unfortunately for many of 5 the sites where wickiups were present, post -cutting and wood collection by the Historic EuroAmerican settlers and ranchers over the past 125 years has nearly wiped out evidence of thei r presence. Also, surface collection of diagnostic artifacts has impacted the sites and affected the assignment of cultural/temporal associations. In general, although the study area was probably not continuously occupied prehistorically, it seems to have offered an attractive environment for gathering, floral processing, hunting, as well as lithic procurement and processing. Site density in the surrounding mesa areas is high, probably due to two factors: good access to permanent water, and strategic topographical positioning on the ridge tops and open benches. Such camp placement provided a good view of the surrounding lower elevations for purposes of hunting and protection. 'The heavily vegetated canyon bottoms were accessed for reasons of acquiring water and for the procurement of floral and faunal resources. The apparent differences in the characteristics of the upland and lowland sites may be due to factors other than cultural selection. The lowland sites are subjected to more artifact collecting than the uplands, and the areas along the Colorado River have been subject to few cultural resource surveys. The upland area exhibits a very thick vegetation cover that may be limiting discovery of features and additional artifacts. Lowland sites exhibit greater variability in site types. While the uplands are limited to isolated finds, open camps, and lithic scatters; the lowlands contain these site types and open architectural sites, sheltered sites, and a single tool stone procurement area. The lowland sites contain higher frequencies of cultural features or evidence of features. These features include fire -cracked rock scatters, charcoal stains, hearths, stone structures, and wickiups. All of the prehistoric sites contain low numbers of artifacts, including very limited numbers of debitage, bifacial tools and expedient tools. This suggests conservation, curation, and reuse of flaked stone tools in an area where tool material sources are limited. Lowland sites tend to be situated in the pinyon juniper vegetation community in greater frequencies than is suggested by the relative proportion of the pinyon juniper to other vegetation communities. The sites in the uplands are distributed proportionally to the size of the vegetation communities, with the mountain shrub and sagebrush communities exhibiting the highest site density. Too little is known of the age of the sites to make any definitive statements. The distribution of site ages based on projectile points and ceramics is generally the same as portrayed in Reed and Metcalf (1999), but the lack of absolute dating precludes any conclusions in this area. Lithic scatters exhibit a smaller site size than open camps in both the lowland and upland settings. Isolated finds are distributed across a wider range of slopes than lithic scatters or open camps. The differences in the type and distribution of historic sites arc: Sites in the uplands are limited to sheep and cattle raising activities and are primarily post -1889. Sites in the uplands are 6 distributed proportionally to the size of the vegetation communities, with the mountain shrub and sagebrush communities exhibiting the highest site density. Sites in the lowlands display a greater diversity in types and are found mainly in the pinyon juniper and sagebrush zones. The historic sites in the lowlands are concentrated near transportation corridors and near permanent water sources, particularly the habitation sites. Sites indicative of particular economic activities are spread across the landscape. During 1980, the BLM 's Glenwood Springs Resource Arca was subject to an archaeological survey that randomly sampled three percent of its managed lands, A total of 17,400 acres was surveyed for cultural resources. As a result, 58 prehistoric sites and 2 historic sites were recorded, an average of about 2 sites per section (.0034/acre). Three types of prehistoric sites were distinguished by the study; limited activity areas, short-term camps, and large habitation sites. These were classified on the basis of site size and the diversity of artifacts/activities represented. Notably, the sites were unevenly distributed and varied by vegetation community. The highest site density, about 5.0 sites/section (.0078/acre), occurred in pinyon/juniper and sagebrush communities. Concurrently, the greatest number of sites located during the survey tended to occur in or near the pinyon/juniper community. Other environmental factors found to be important during the statistical analysis of the settlement patterns included 1) vertical distance between the site and the primary water source is a greater controlling factor that the horizontal distance, 2) sites tend to be near or on points of vantage, 3) sites tend to be located in forested areas, preferably with a southern exposure and, 4) sites tend to occur on flat ground (less than 40% grade) in areas of relatively low surface relief (Burgess et al. 1980:108-120, 138- 139). In general, the region exhibits a relatively low site density and sites tend to cluster near permanent water sources. Relevant Historical Background post -1880 The Ute people occupied large areas of Western Colorado until about 1881. Due to the White River Utc's discontent that lead to the "Meeker Massacre," as the incident became know, a congressional investigation lead to the Treaty of 1880 that stipulated the removal of the White River bands to the Uintah Reservation in northeastern Utah. The Uncompahgre band was to be given a small reservation in the vicinity of the confluence of the Colorado and Gunnison Rivers. Aware of the value of these agricultural lands, however, the commission charged with enforcing the terms of the treaty, under the direction of Otto Mears, manipulated the location process using a loophole in the treaty language, and the Uncompahgres were given lands in Utah near the Uintah Reservation. The Southern Ute hands were left on the small reservation in southwestern Colorado that had been given them by the Treaty of 1873. On 1 September 1881, the last of the Utes were moved to their new reservations in Utah, and western Colorado was completely opened to the whites. Interest in the potential agricultural lands of western Colorado (namely the Uncompahgre, Gunnison, Colorado, Dolores, San Miguel, White, and La Plata River valleys) had been growing 7 for some time prior to the Utes' banishment, and by thc spring of 1881 frontier towns closest to the Ute lands were "crowded with people, anxious to enter the Reservation and take possession of the most desirable locations (Haskell 1886:2)." Only days after the last of the Utes had been expelled, settlers began rushing onto the reservation lands. Settlement activity spread quickly -- during the autumn months of 1881 land claims were staked, townsites were chosen, and railroad routes were surveyed (Haskell 1886, Borland 1952, Rait 1932). However, because the former reservation lands were not officially declared public lands until August 1882, the first year of settlement activity was marked by a degree of uncertainty regarding the legality of land claims. When finally announced, the 1882 declaration did not allow home -stead entries on the newly opened lands, but only pre-emptions, or cash entries, at the rate of $1.25 per acre for agricultural land, $5.00 per acre for mineral land (Borland 1952:75). By 1895, the major portion of the land along Mammo Creek had been claimed, mostly under Cash Entry patents. The settlers raised their own food and availed themselves of the plentiful game in the area. Gardens, hay fields, and orchards were planted, and irrigation ditches were dug to divert the creek's water to cultivated fields. Large herds of cattle and sheep were accumulating, grazing the valley floor and the vast open range above, driven to the uplands via trails leading up the various gulches. Because the arca was still fairly remote, competition for lands had not yet begun. Travel in and out of the Rifle area was restricted to horse and/or wagon. There were several well-developed Ute trails, and in the early 1880s, the federal government had built the aforementioned road between the White and Grand Valleys. In 1885 a toll road opened along the Grand River between Rifle and Grand Junction; prior to the building of this road through DeBeque Canyon, the route to Grand Junction had been a two-week journey "through the Cedar llilts, up Kimball Creek...down the "Sawtooth Range to Fruita and then back to Grand Junction" (Murray 1973:5). But, despite this network of trails and roads, Parachute remained pretty much isolated. With the coming of the D&RG railroad in 1890, however, new pressures were brought to the area. More and more settlers arrived, competing not only for arable land but also for grazing privileges on the unpatented public domain of the surrounding uplands. Increasing numbers of cattle and sheep were imported, some being run as commission cattle for outside investors (ibid:84). Open warfare between cattle and sheep ranchers ensued, resulting in the slaughter of thousands of animals. Four thousand sheep belonging to Messrs. Starkey and Charlie Brown were killed by masked men who tried to drive the animals over cliffs at the head of a Clear Creek tributary and above the Grantee Schoolhouse (LaPoint et al. 1981:3-51). Another 4000 sheep belonging to J.B. Huriburt were driven to their deaths above Ben Good Creek, a tributary of Bast Fork. The animosity between cattlemen and sheepmen continued into the 1900s. Finally, Congress passed the Taylor Grazing Act in 1934, bringing to an end to thc free range by providing for regulated grazing and an end to the Sheep -Cattle Wars. Cash Entry, Desert Land, and Homestead patents continued to be granted into the 1920s and 30s. Ranching and farming were still the most important economic activities in the Parachute area and remained so until the 1960s and 1970s when many of the farms and ranches of the region 8 were bought up by large companies interested in the large-scale extraction of oil shale and natural gas. Summary and Recommendations The National Historic Preservation Act of 1966 (NEPA) directs that federal agencies protect cultural resources that possess significant values. Significance is a quality of cultural resource properties that qualifies them for inclusion in the NRNP. The statements of significance included in this report are field assessments that support rriartagernerrt recommendations to the State Historic Preservation Officer (SHPO). The final determination of site significance is made by the controlling agency in consultation with the SIIPO. The Code of Federal Regulations was used as a guide for site evaluations. Titles 36 CFR 50, 36 CFR 800, and 36 CFR 64 are concerned with the concepts of significance and (possible) historic value of cultural resources. Titles 36 CFR 65 and 36 CFR 66 provide standards for the conduct of significant and scientific data recovery activities. Finally, Title 36 CFR 60.6 establishes the measure of significance that is critical to the determination of a site's NRNP eligibility, which is used to assess a site's research potential: The quality of significance in American history, architecture, archaeology, and culture is present in districts, sites, buildings, structures, and objects of State and local importance that possess integrity of location, design, setting, materials, workmanship, feeling, and association, and a) that are associated with events that have made a significant contribution to the broad patterns of history; or b) that are associated with the lives of persons significant in our past; or c) that embody the distinctive characteristics of a type, period, or method of construction, or that represent the work ofa master, or that possess high artistic values, or that represent a significant and distinguishable entity whose components may lack individual distinction; or d) that have yielded, or may he likely to yield, information important in the prehistory or history. The eligibility determination and consultation process is guided by Section 106 of the NHPA (36 CFR 60, 63, and 800). Final determinations of National Register eligibility and effect are made by the controlling agencies in consultation with the State Historic Preservation Officer. The Class I files search indicated no sites have been previously recorded within a mile of the project area. Also, the proposed project will be constructed on lands subject to modem cultivation. Accordingly, a determination of "no effect" for the project is recommended pursuant to Section 106 of the National Historic Preservation Act (36 CFR 800). 9 References Antevs, E. 1955 Geologic -climate dating in the west. American Antiquity 20:317-355. Borland, Lois 1952 110 for the reservation; settlement of the Western Slope. Colorado Magazine 29(1):56-75. Berry, Claudia F. and Michael S. Berry 1986 Chronological and Conceptual Models of the Southwestern Archaic. In: Anthropology of the Desert West, ed. by Carol J. Condie and Don D. Fowler, pp. 253-327. University of Utah Anthropological Papers No. 110. Salt Lake City. Burgess, Robert J.; Kenneth L. Kvamme; Paul R. Nickens, Alan D. Reed; and Gordon C. Tucker 1980 Class 11 cultural resource inventory report of the Glenwood Springs Resource Area, Grand Junction District, Colorado. Ms on file, Bureau of Land Management, Grand Junction. Conner, Carl E., James C. Miller and Nicole Darnell 2006 Class 11I (intensive) cultural resource inventory of three block acreages within the South Parachute Geographic Area Plan (GAP) domain in Garfield County, Colorado, for Williams Production RMT. Ms on file, Bureau of Land Management, Glenwood Springs Field Office. Dean, Jeffery S.; R. C. Euler; G. J. Gumerman; F. Plog; R. H. Hevly; and T. N.V. Karlstrom 1985 Human behavior, demography and paleoenvironment on the Colorado Plateau. American Antiquity 50(3):537-554. Euler, Robert C.; G. J. Gumerman; Thor N.V. Karlstrom; J, S. Dean; and Richard H. Hevly 1979 The Colorado Plateaus: Cultural dynamics and paleoenvironment. Science 205(4411):1089-1101. Haskell, Charles W. 1886 History and Description of Mesa County, Colorado. Edited and published by the Mesa County Democrat, Grand Junction. Husband, Michael B. 1984 Colorado Plateau Country Historic Context. Colorado Historical Society, Denver. 10 LaPoint, Halcyon, Brian Aivazian, and Sherry Smith 1981 Cultural resources inventory baseline report for the Clear Creek Property, Garfield County, Colorado, Volume I. Laboratory of Public Archaeology, Colorado State University, Fort Collins. Madsen, David B. 1982 Great Basin paleoenvironments: summary and integration. In:Mand and Environment in the Great Basin, D.13. Madsen and J.F. O'Connell, editors. Society of American Archaeology Papers No. 2, pp.102-104. Washington, D.C. Mehringer, Peter J. 1967 Pollen analysis and the alluvial chronology. The Kiva 32:96-101. Murray, lrlene D. 1973 Lest We Forget -A Short History of Early Grand Valley, Colorado, Originally called Parachute. Colorado. Quahada, Inc., Grand Junction. Peterson, Kenneth P. 1981 10,000 years of change reconstructed from fossil pollen, La Plata Mountains, southwestern Colorado. Unpublished Ph.D. dissertation, Department of Anthropology, Washington State University, Seattle. Rait, Mary 1932 History of the Grand Valley. M.A. thesis, University of Colorado, Boulder. Reed, Alan D. and Michael D. Metcalf 1999 Colorado Prehistory: A Context for the Northern Colorado River Basin. Colorado Historical Society, Denver. USDA Soil Conservation Service 1978 Technical Guide IIE: Range Site Descriptions. Wendlund, Wayne M. and Reid A. Bryson 1974 Dating climatic episodes of the Holocene. Quaternary Research 4:9-24. Young, Robert G. and Joann W. 1977 Colorado West, Land of Geology and Wildflowers. Wheelwright Press, Ltd. 11 INTEGRATED VEGETATION AND NOXIOUS WEED MANAGEMENT PLAN FI1E TANK STORAGE YARD Garfield County Cover Photo: View of proposed tank storage yard. Prepared for: EnCana Oil and Gas (USA), Inc. Parachute, Colorado Prepared by: WestWater Engineering 2516 Foresight Circle #1 Grand Junction, CO 81505 March 2009 1.0 INTRODUCTION 1.1 Project Description EnCana Oil and Gas (USA), Inc. (EnCana), has requested WestWater Engineering (WWE) to provide an "Integrated Vegetation and Noxious Weed Management Plan" (IVNWMP). Encana is proposing to use an existing well pad site for a tank storage yard. The site is located in Garfield County, Colorado, Section 11, Township 7 South, and Range 92 West (Figure 1). The yard site is privately owned land and is currently being used for oil and gas development. The primary use of the surrounding area of the project site is agriculture/rangeland, wildlife habitat, and recent natural gas extraction/development. 1.2 General Survey Information Field surveys of the tank storage yard were conducted by WWE biologists on March 20, 2009. WWE biologists surveyed the proposed tank storage yard to identify vegetation communities and to search for, identify, and map noxious weed species. During the survey ground and climate conditions were dry and visibility of resource features was excellent (Cover Photo). Vegetation types were determined through field identification of plants, aerial photography, and on -the -ground assessments of plant abundance visible during the survey. Identification of plant species was aided by using pertinent published field guides (Whitson et al. 2001, CWMA 2007, Kershaw et al. 1998, Weber and Wittman, 2001). Mapped soil types, as published by the Natural Resources Conservation Service (NRCS), U. S. Department of Agriculture (USDA), were reviewed to determine the soil types and vegetation characteristics of the tank storage yard and surrounding property (NRCS 2008). Photographs were taken of the general project location, vegetation and terrain, and other specific biological findings. Locations of weeds and other features included in this report were recorded with the aid of a handheld global positioning system instrument (GPS) using NAD83/WGS84 map datum, with all coordinate locations based on the Universal Transverse Mercator (UTM) coordinate system in Zone 13. 2.0 LANDSCAPE SETTING 2.1 Vegetation Communities The topography in the vicinity of the tank yard is generally flat to rolling terrain in meadows, rangeland, and pinon/juniper woodland that is intersected by the moderately steep slopes of surrounding mesas. The project site is situated between West Divide Creek and Dry Hollow Creek. Elevation at the tank storage yard is approximately 6,100 feet. The dominant vegetative community on the project site consists of open irrigated and dry -land meadows comprised of alfalfa and introduced grass species. Adjacent woodlands and rangelands are vegetated with overstories of pinon pine (Pinus edulis), Utah juniper (Juniperus utahensis), sagebrush (Artemesia tridentata), rabbitbrush (Chrysothamnus nauseosus), mountain mahogany (Cercocarpus montanus) and sumac (Rhus trilobata). The riparian areas of Dry Hollow Creek and West Divide Creek contain narrowleaf cottonwood (Populus angustifolia), wild rose (Rosa WestWater Engineering Page 2 of 15 March 2009 woodsii) and grasses. These riparian areas lie approximately 1.0 miles from the tank storage yard site. 2.2 Soil Types Two soil units are found within the proposed yard site: Potts Loam and Torriorhents-Rock outcrop complex. Both soil types are found throughout the Dry Hollow Creek area and support the dominant vegetation found in the area. Potts loam occurs on relatively flat terrain with slopes 6 to 12 percent. They are typically well drained, deep soils (80 inches). Dominant vegetation characteristic of the Potts loam soil is western wheatgrass (Pascopyrum smithii), bluebunch wheatgrass (Agropyron spicatum), big sagebrus, needle and thread grass (Hesperostipa comata), Indian ricegrass (Oryzopsis hymenoides), rabbitbrush and bottlebrush squirreltail (Elymus elymoides).This soil type is found on elevations ranging from 5,000 feet to 7,000 feet. Torriothents-Rock outcrop complex soils are found on steep hillsides with slopes of 15-70 percent and adjacent ridge -tops. They are well drained but relatively shallow (4-30 inches). These soils are associated with steep slopes adjacent to Dry Hollow Creek and support vegetation communities generally of pifion pine and Utah juniper woodlands and mountain shrub, i.e., serviceberry spp., Gambel's oak (Quercus gambell), mountain mahogany, etc. These soils have very severe limitations for land capability; are unsuitable for cultivation; and are primarily used for livestock grazing, recreation and wildlife habitat. 3.0 NOXIOUS WEEDS 3.1 Introduction to Noxious Weeds A noxious weed is a plant that is not native to an area and causes both environmental and economic damage. Most noxious weed species were introduced from Europe or Asia, either accidentally or as ornamentals that have escaped. Once these non -natives are established in a new environment they tend to spread quickly since insects, diseases and animals that normally control them are absent. Noxious weeds are spread by man, animals, water, and wind. Prime locations for the establishment of noxious weeds include roadsides, sites cleared for construction, areas that are overused by animals or humans, wetlands, and riparian corridors. Subsequent to soil disturbances, vegetation communities can be susceptible to infestations of invasive or exotic weed species. Vegetation removal and soil disturbance during construction can create optimal conditions for the establishment of invasive, non-native species. Construction equipment traveling from weed -infested areas into weed -free areas could disperse noxious or invasive weed seeds and propagates, resulting in the establishment of these weeds in previously weed -free areas (Photo 1). WestWater Engineering Page 3 of 15 March 2009 Photo 1. Potential source of weed seed — transported soil on equipment The Colorado Noxious Weed Act (State of Colorado 2005) requires local governing bodies to develop noxious weed management plans. Both the State of Colorado and Garfield County (Garfield County Vegetation Management and Garfield County Weed Advisory Board 2002) maintain a list of plants that are considered to be noxious weeds. The State of Colorado noxious weed list includes three categories: List A, List B and List C. List A species must be eradicated whenever detected (none were found). List B species include weeds whose spread should be halted (1 specie found). List C species are widespread but the State will assist local jurisdictions which choose to manage those weed (1 specie found). The Garfield County Weed Advisory Board has compiled a list of 21 plants from the State list considered to be noxious weeds within the county (see Appendix A). One of those weed species are found in, or near, the project area. The Garfield County Weed Advisory Board has duties to: 1) develop a noxious weed list; 2) develop a weed management plan for designated noxious weeds; 3) recommend to the Board of County Commissioners that identified landowners submit an integrated weed management plan for their properties. 3.2 Observations Russian knapweed, which is listed by Garfield County, was found along the eastern edge of the pad in small densities. Cheatgrass, a state -listed species, occurs throughout the adjacent sagebrush vegetation. Other problematic weeds noted during the survey were common cocklebur, common mallow, kochia, lambsquarter, prickly lettuce, Russian thistle, smooth WestWater Engineering Page 4 of 15 March 2009 brome, and tumble mustard. Location coordinates of Garfield County listed noxious weeds observed during the surveys are presented in Table 2. The locations of observed Garfield County listed weeds are plotted on the project map (Figure 1). Table 2. Location of Noxious Weeds Found in the Project Area Common Name*/ USDA Symbol Scientific Name Type Location and Abundance Russian knapweed b ACRE3 Acroptilon repens P Found in small densities along eastern edge of well pad. UTM Coordinates: 4371642N and 273128E, 4371552N and 273122E. Cheatgrass` BRTE Bromus tectorum A Abundant throughout the understory of surrounding sagebrush habitat. * Bold type on Garfield County list and observed in field; 'State of Colorado "A" list, " "B" list, "C" list„ " not listed. Type: A -annual, B -biennial, P -perennial. 3.3 Recommended Treatment Strategies It is important to know whether the targeted weed species is annual, biennial, or perennial to select strategies that effectively control and eliminate the target. Treatment strategies are different depending on plant type, which are summarized in Tables 3, 4 and 5. In Section 3.5, the Life Cycle and Management Calendars section and Table 6, best timing and strategies are illustrated for the noxious weeds found. Herbicides should not always be the first treatment of choice when other methods can be effectively employed. Table 3. Name, Type and Control Methods For Listed Weeds In The Project Area Common Name*/ USDA Symbol Scientific Name Type Control Methods Russian knapweed 6 ACRE3 Acroptilon repens P Re -seeding disturbed sites with fast growing grasses, herbicide in fall; allelopathic — tillage may be necessary Cheatgrass` BRTE Bromus tectorumA Eliminate seed source; re -vegetate with native grasses; herbicide treatment in early spring and fall. * Bold type on Garfield County list and observed in field; 'State of Colorado "A" list, ° "8" list, "C" list„ " not listed. Type: A -annual, 8 -biennial, P -perennial. NRCS 2007, Sirota 2004, Whitson el al. 2001 Table 4. Treatment Strategies for Annual and Biennial Noxious Weeds Target: Prevent Seed Production 1. Hand grub (pull), hoe, till, cultivate in rosette stage and before flowering or seed maturity. If seeds develop, cut and bag seed heads. 2. Chop roots with a spade below soil level. 3. Treat with herbicide in rosette or bolting stage, before flowering. WestWater Engineering Page 5 of 15 March 2009 (Sirota 2004) Table 5. Treatment Strategies for Perennials Target: Deplete nutrient reserves in root system, prevent seed production 1. Allow plants to expend as much energy from root system as possible, do not treat when first emerging in spring, but allow growth to bud/bloom stage. If seeds develop, cut and bag if possible. 2. Herbicide treatment at bud to bloom stage or in the fall (recommended, after August 15 when natural precipitation is present). In the fall, plants draw nutrients into the roots for winter storage. Herbicides will be drawn down to the roots more efficiently at this time due to translocation of nutrients to roots rather than leaves. If the weed patch has been present for a long period of time, another season of seed production is not as important as getting the herbicide into the root system. Spraying in fall (after middle August) will kill the following year's shoots, which are being formed on the roots at this time. 3. Mowing usually is not recommended because the plants will flower anyway; seed production should be reduced. Many studies have shown that mowing perennials and spraying the re -growth is not as effective as spraying without mowing. Effect of mowing is species dependent; therefore, it is imperative to know the species and its basic biology. Timing of application must be done when biologically appropriate, which is not necessarily convenient. 4. Tillage may or may not be effective. Most perennial roots can sprout from pieces only %' - 1" long. Clean machinery thoroughly before leaving the weed patch. 5. Hand pulling is generally not recommended for perennial species unless you know the plants are seedlings and not established plants. Hand pulling can be effective on small patches but is very labor intensive because it must be done repeatedly. (Sirota 2004) Herbicide treatment with two or more herbicide modes of action in fall (after approximately August 15 when natural precipitation is present) is the best method to control difficult species. The resilience and ability to quickly develop immunity to herbicides, particularly those used incorrectly, makes it imperative to use the proper chemicals at the correct time in the specified concentration. Most misuse seems centered around excessive use either in frequency or concentration. This results in mostly top kill and an immune phenotype. 3.4 Life Cycle and Management Calendars Figure 2 is a two-year calendar for control and life cycle of biennial thistles such as bull thistle and musk thistle. It should also be noted, that the cutting of rosettes can be done at any time during growth. For treatment of Russian knapweed best results can be achieved by following the management calendar in Table 6. WestWater Engineering Page 6 of 15 March 2009 Species Knapweed, Russian Figure 2. Life Cycle and Management strategies for biennial is rr10t+40nce inn i Summer Herbicide Application Herb, Appl, Mowing 4'^^• Rass110 - _.h Doh F *ii Doi Fall Win(01 Spnnr Sur, fief Year1 Year2 (Hartzler 2006) Type* Jan CP [Feb Table 6. Noxious Weed Biology March (April [May [June July [Aug (Sept emerges flowering (Oct Nov Dec --> Fegrowth A = annual; WA = winter annual; l3 = biennial; P = perennial; CP = creeping perennial Shaded areas indicate best control liming. * Tamarisk control can be done any time of the year, but is easier when leaves are absent and weather is cooler. (Sirota 2004) 3.5 Commercial Applicator Recommendations A certified commercial applicator is a good choice for herbicide control efforts. An applicator has the full range of knowledge, skills, equipment and experience desired when dealing with Russian knapweed and other difficult vegetation. Reclamation farming services using multiple seed bin range drills and specialized related equipment is available and should be used for reclamation seeding projects. Common chemical and trade names may be used in this report. The use of trade names is for clarity by the reader. Inclusion of a trade name does not imply endorsement of that particular brand of herbicide and exclusion does not imply non -approval. Certified commercial applicators will decide which herbicide to use and at what concentration according to label directions. Landowners using unrestricted products must obey all label warnings, cautions, and application concentrations. The author of this report is not responsible for inappropriate herbicide use by readers. WestWater Engineering Page 7 of 15 March 2009 3.6 Best Management Practices — Noxious Weeds The following practices should be adopted for any construction project to reduce the costs of noxious weed control. The practices include: • top soil, where present, should be segregated from deeper soils and replaced as top soil on the final grade, a process known as live topsoil handling; • wetland vegetation, if encountered, should be live handled like sod, temporarily watered if necessary, and placed over excavated sub -soil relative to the position from which the wetland sod was removed; • cut-off collars should be placed on all wetland and stream crossings to prevent back washing or draining of important aquatic resources; • in all cases, temporary disturbance should be kept to an absolute minimum; • equipment and materials handling should be done on established sites such as the northern point of origin to reduce area and extent of soil compaction; • disturbances should be immediately re -seeded with the recommended mix in the re - vegetation section; • topsoil stockpiles should be seeded with non-invasive sterile hybrid grasses, if stored longer than one growing season; • prior to delivery to the site, equipment should be cleaned of soils remaining from previous construction sites which may be contaminated with noxious weeds; and • if working in sites with weed -seed contaminated soil, equipment should be cleaned of potentially seed -bearing soils and vegetative debris prior to moving to uncontaminated terrain. In areas with slope greater than 3 percent, imprinting of the seed bed is recommended. Imprinting can be in the form of dozer tracks or furrows perpendicular to the direction of slope. When hydro -seeding or mulching, imprinting should be done prior to seeding, unless the mulch is to be crimped into the soil surface. If broadcast seeding and harrowing, imprinting should be done as part of the harrowing. Furrowing can be done by several methods, the most simple of which is to drill seed perpendicular to the direction of slope in a prepared bed. Other simple imprinting methods include deep hand raking and harrowing, always perpendicular to the direction of slope. Herbicides: Difficult species respond better to an application of a combination of two or more chemical modes of action (biological reason for plant death) rather than one (Boerboom 1999). It has also been found that use of two different groups of chemicals in the same mode of action can increase effectiveness on difficult species, e.g., phenoxys and benzoic acids or carboxylic acids and benzoic acids in a mix. Some come commercially pre -mixed, e.g., Crossbow and Super Weed -be -Gone Max, which are available over the counter. However, some of the most effective herbicides are restricted use and available only for licensed applicators. Professionals or landowners using herbicides must use the concentration specified on the label of the container in hand. Herbicides generally do not work better at higher concentrations. Most herbicide failures observed by WWE are related to incomplete control caused by high concentrations killing top growth before the active ingredient can be transported to the roots WestWater Engineering Page 8 of 15 March 2009 through the nutrient translocation process. Most herbicide applications should use a surfactant if directed on the herbicide label or other adjuvants as called for on the herbicide label. Grazing: Grazing should be deferred in reclaimed areas until the desired species are established. Mechanical: Thistles when found in low density and occurrence is an example where control could be accomplished mechanically. Alternative Methods: An alternative method, particularly for cheatgrass infestations and poor or destroyed topsoil, is the application of vesicular-arbuscular mycorrhizal fungi typically referred to as AMF. These fungi, mostly of the genus Glomus are symbiotic with about 80 percent of all vegetation. Endo-mycorrhizal fungi are associated mostly with grasses and forbs and could be helpful when reclaiming this project. In symbiosis, the fungi increase water and nutrient transfer capacity of the host root system by as much as several orders of magnitude (Barrow and McCaslin 1995). Over-the-counter commercial products, which are better adapted to coating seeds when re- seeding and treating roots of live seedling trees and shrubs at time of planting, come in powder form and are available from many different sources. Some also come in granular form to be spread with seed from a broadcast spreader. The best AMF products should contain more than one species. All Colorado State Forest Salida District tree and shrub plantings include the application of AMF. According to District Forester Crystal Tischler, "AMF is worth it" (Tischler 2006). Most, if not all, Colorado Department of Transportation re-vegetation/re-seeding projects now require use of AMF and BioSol, a certified by-product of the penicillin manufacturing process composed primarily of mycelium. Compacted soils respond well to fossilized humic substances and by- products called humates. These humates, including humic and fulvic acids and humin were formed from pre -historic plant and animal deposits and work especially well on compacted soils when applied as directed. 4.0 REVEGETATION - RECLAMATION 4.1 Project Area The vegetation ranges from irrigated and non -irrigated alfalfa/grass meadows to varying native vegetation. Successful reclamation of the project area is dependent upon soil type and texture, aspect, slope, proper weed control and re -vegetation with suitable plant species. Based on the soil types, terrain, and the presence of noxious weeds at the project site, successful reclamation is most likely if a seed mix of grasses is used (Tables 6 and 7). This will allow control of noxious weeds while establishing vegetation in the disturbed areas. Two seed mixes are recommended based on soil type and available moisture; one for the drier pit-Ion/juniper/sagebrush sites and one for the meadow/riparian sites with more moisture. WestWater Engineering Page 9 of 15 March 2009 Individual property owners affected by the project may have specific seed mix preferences for vegetation reclamation on their respective properties. For best results and success, the recommended grass mixture reseeding should be done in late autumn. The reseeding rate should be doubled for broadcast application (CNHP 1998). Preferred seeding method is multiple seed bin rangeland drill with no soil preparation other than simple grading to slope and imprinting and waterbars where applicable. Alternative seeding methods include, but are not limited to: • harrow with just enough soil moisture to create a rough surface, broadcast seed and re - harrow, preferably at a 90 degree angle to the first harrow; • hydro -seeding (most economical in terms of seed cost); and • hand -raking and broadcast followed by re -raking at a 90 degree angle to the first raking. These are not the only means of replanting the site. However, these methods have been observed to be effective in similar landscapes. After desired grasses are established and control of target weed species is successful, then shrubs, forbs and trees can be planted without concern for herbicide damage. Few native forb seeds are available commercially as cultivars. Most are collected from natural populations. Native shrubs and forbs often do not establish well from seed, particularly when mixed with grasses. Past experience has shown that stabilizing the soil with grasses, accomplishing weed control, and then coming back to plant live, containerized woody species in copses has been the most cost effective method for establishing the woody species component of the plant community. Table 6. Recommended Seed Mix for Arid Sites — F11E Tank Storage Yard (Pifion-Juniper Woodland and/or Mountain/Wyoming Big Sagebrush Shrubland, BLM- GSFO) Common Name Scientific Names Variety Season Form PLS lbs/acre* Plant the Following (10% Total) Indian Ricegrass Achnatherum [Oryzopsis] hymenoides Nezpar, Paloma, Rimrock Coal Bunch 1.9 and Both of the Following (15% Each, 30% Total) Galleta Pleuraphis [HilariaJ jamesii Viva florets Warm Bunch 2.5 Bluebunch Wheatgrass Pseudoroegneria spicata, Agropyron spicatum Secar, P-7, Anatone Cool Bunch 2.8 and One of the Following 20% Total) Thickspike Wheatgrass Elymus lanceolatus ssp. lanceolatus,Agropyron dasystachyum Critana, Schwendimar Cool Sod -forming 3.4 WestWater Engineering Page 10 of 15 March 2009 Common Name Scientific Names Variety Season Form PLS lbs/acre* Slender Wheatgrass Elymus trachycaulus, Agropyron trachycaulum San Luis Cool Bunch 3.3 and Two of the Following (40% Total) Muttongrass Poa fendleriana San Luis Cool Bunch 0.6 Sandberg Bluegrass Poa sandbergii, Poa secunda Achnatherum [Stipa] lettermanii Cool Bunch 0.6 Bottlebrush Squirreltail Elymus elymoides, Sitanion hystrix Elymus glaucus Cool Bunch 2.7 *Based on 60 pure live seeds (PLS) per square foot, drill -seeded. Double this rate (120 PLS per square foot) if broadcast or hydro -seeded Table 7. Recommend Seed Mix for Meadow and Riparian Sites --F 1 l E Tank Storage Yard Spruce -Fir Forest, Including Mountain Meadows, BLM - GSFO Common Name Scientific Names Variety Season Form PLS lbs/acre* Plant Both of the Following (20% Each 40% Total) Mountain Brome Bromopsis [Bromus] marginatus Garnet Cool Bunch 5.8 Slender Wheatgrass Elymus trachycaulus, Agropyron trachycaulum San Luis Cool Bunch 3.3 and Three of the Following (20% Each 60% Total) Letterman Needlegrass Achnatherum [Stipa] lettermanii Cool Bunch 3.5 Blue Wildrye Elymus glaucus Arlington Cool Bunch 4.8 Thickspike Wheatgrass Elymus lanceolatus ssp. lanceolatus, Agropyron dasystachyum Critana, Schwendi mar Cool Sod -forming 3.4 Idaho Fescue Festuca idahoensis Joseph Cool Bunch 1.2 Wheeler Bluegrass Poa nervosa Cool Sod -forming 0.6 *Based on 60 pure live seeds (PLS) per square foot, drill -seeded. Double this rate (120 PLS per square foot) if broadcast or hydroseeded For the project area, grasses should be drilled after construction activities cease and the equipment removed from the site. After two years of controlling weeds (with herbicides) and allowing the grasses to become established, the forbs and woody species should be inter -seeded or hand -planted to increase the diversity and value of the reclamation plantings. WestWater Engineering Page 11 of 15 March 2009 5.0 REFERENCES Barrow, J. R., and Bobby D. McCaslin. 1995. Role of microbes in resource management in arid ecosystems. In: Barrow, J. R., E. D. McArthur, R. E. Sosebee, and Tausch, R. J., comps. 1996. Proceedings: shrubland ecosystem dynamics in a changing environment. General Technical Report, INT -GTR -338, Ogden, Utah: U.S. Department of Agriculture, U.S. Forest Service, Intermountain Resource Station, 275 pp. Boerboom, C. 1999. Herbicide mode of action reference. Weed Science, University of Wisconsin, 5 pp. CNHP. 1998. Native Plant Re -vegetation Guide for Colorado. Colorado Natural Heritage Program, Caring for the Land Series, Vol. III, State of Colorado, Division of Parks and Outdoor Recreation, Department of Natural Resources, Denver, 258 pp. CWMA. 2007. S. Anthony, T. D'Amato, A. Doran, S. Elzinga, J. Powell, I. Schonle, K. Uhing. Noxious Weeds of Colorado, Ninth Edition. Colorado Weed Management Association, Centennial. Hartzler, Bob. 2006. Biennial thistles of Iowa. ISU Extension Agronomy. URL: http://www.weeds.iastate.edu/mgmt/2006/iowathistles.shtml Kershaw, L., A. MacKinnon, and J. Pojar. 1998. Plants of the Rocky Mountains. Lone Pine Publishing, Auburn, Washington. NRCS. 2007. The PLANTS Database (http://plants.usda.gov, 7 September 2006). National Plant Data Center, U.S. Department of Agriculture, Natural Resource Conservation Service, Baton Rouge, Louisiana 70874-4490. NRCS. 2008. Web Soil Survey, U.S. Department of Agriculture, Natural Resource Conservation Service, URL: http://websoilsurvey.nrcs.usda.gov Sirota, J. 2004. Best management practices for noxious weeds of Mesa County. Colorado State University Cooperative Extension Tri River Area, Grand Junction, Colorado. URL: http://www.coopext.colostate.edu/TRA/PLANTS/index.html#http:l/www.coopext.co losta te.edu/TRA/PLANTS/bindweedmite.html State of Colorado. 2005. Rules pertaining to the administration and enforcement of the Colorado Noxious Weed Act, 35-5-1-119, C.R.S. 2003. Department of Agriculture, Plant Industry Division, Denver, 78 pp. State of Colorado. 2001. Colorado's Strategic Plan to Stop the Spread of Noxious Weeds: A Framework for Statewide Coordinated and Cost -Effective Action to Protect Agriculture and the Environment. Department of Agriculture, Plant Industry Division, Lakewood, Colorado. December 2001.23 pp. URL: http ://www. colorado . gov/cs/Satellite?blobco l=urldata&b lobheader=application%2Fpdf& b lobheadername 1=Content-Disposition&blobheadername2=MDT- WestWater Engineering Page 12 of 15 March 2009 Type&blobheadervalue 1=inline%3 B+filename%3D309%2F293%2FStrategicPlantoStopt heSpreadofWeeds.pdf&blobheadervalue2=abinary%3B+charset%3DUTF- 8 &b lobkey=id&b to btable=MungoB to bs&blobwhere=11673 63 897646&s sbinary=true Tischler, Crystal. 2006. District Forester, Colorado State Forest Service, Salida, Colorado. Personal communication with Bill Clark, WestWater Engineering, Grand Junction, Colorado. Weber, W. A. and R. C. Wittman. 2001. Colorado Flora: Western Slope. 3`d Edition. University Press of Colorado. Boulder, Colorado. Whitson, T. D. (editor), L. C. Burrill, S. A. Dewey, D. W. Cudney, B. E. Nelson, R. D. Lee, and R. Parker. 2001. Weeds of the West - 9`j' edition. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming, Laramie. WestWater Engineering Page 13 of 15 March 2009 March 2009 Pe 14 of 15 WestWater Engineering a v tE co CO XXXXXXXXXXXXXXXXXXXXXXXX State "C" List X X X m Y r J X 0 XXXXXX X X X X X X X X X X X X State "A" List X x N Jh. N 2 P Q CO P P B B P P Q P a a B n. d a a (L 0. 00 d d a r. 0.6 0 LL LL. 0 u_ 8 F F F F F LL F LL LL F I- F F LL LL LL L F T I- T Species Code ACRE 3 AECY ARMI 2 ARAB 3 CADR 01 CANU 4 00 CEMA 4 CESO 3 CHLE 80 01 CIAR 4 CYOF ELAN EUES J I J LIVU 2 LYSA 2 0 TACH2 TAPA 4 TARA Common name Russian knapweed 1 Jointed goatgrass Common (Lesser) burdock Absinth wormwood Hoary cress, Whitetop Spiny plumeless thistle Musk (Nodding plumeless) thistle Diffuse knapweed Spotted knapweed Yellow starthistle Oxeye daisy 0 V 0 0 Canada thistle Houndstongue, Gypsyflower Russian olive Leafy spurge Dalmatian toadflax, broad-leaved Dalmatian toadflax, narrow -leaved Yellow toadflax Purple loosestrife Scotch thistle Chinese tamarisk Smallflower tamarisk Salt cedar, Tamarisk Species Acroptilon repens Aegilops cylindrica Arctium minus Artemisia absinthium Cardaria draba Carduus acanthoides Carduus nutans Centaurea diffusa Centaurea maculosa Centaurea solstitialis Chrysanthemum leucanthemum co ' C p Cirsium arvense d l0 c U O j y O O Elaeagnus angustifolia Euphorbia esula Linaria dalmatica co N G 0) .coco Linaria vulgaris Lythrum salicaria Onopordum acanthium Tamarix chinensis Tamarix parviflora Tamarix ramosissima c c c d a a To c N a II m To c c t6 11 0 0 O 0 0 WestWater Engineering WILDLIFE IMPACT AND SENSITIVE AREAS REPORT F11E TANK STORAGE YARD Garfield County, Colorado Cover Photo: View F11E well pad and proposed Tank Storage Yard. Prepared For: EnCana Oil and Gas (USA), Inc. Prepared by: WestWater Engineering 2516 Foresight Circle #1 Grand Junction, CO 81505 March 2009 1.0 INTRODUCTION EnCana Oil and Gas (USA), Inc. (EnCana), has requested WestWater Engineering (WWE) to provide a "Wildlife Impact and Sensitive Areas Report" for a proposed "special use permit" in Garfield County, Colorado. EnCana is proposing to use an existing well pad site for a tank storage yard. The site is located in Garfield County, Colorado, Section 11, Township 7 South, and Range 92 West (Figures 1 and 2). The tank storage yard is on privately owned land and is currently being used for oil and gas development. The primary use of the surrounding area of the project site is agriculture/rangeland, wildlife habitat, and recent natural gas extraction/development. In preparation for developing the following report, WWE biologists performed field surveys and assessments of wildlife, wildlife habitats, and habitats for sensitive plant species on the yard location and surrounding area. WWE conducted the surveys on March 20, 2009. The purpose of the survey was to determine those wildlife and special status plant species that occupy and/or utilize the project property at varying periods during the year and which would potentially be impacted as a result of the tank storage yard and associated activities. Factors considered include soil type and texture, existing land management, absence or presence of wildlife, habitat designations by Federal and State wildlife agencies, and the present natural vegetation community. This report provides written documentation that describes survey findings as well as recommended mitigation measures to help offset potential impacts to wildlife and special status plants that utilize the property. 2.0 BACKGROUND INFORMATION Descriptions of critical habitats for federally -listed threatened, endangered and candidate fish, wildlife, and plant species were reviewed in the Federal Register, U. S. Department of the Interior, Fish and Wildlife Service (USFWS). Wildlife habitat (activities) maps, provided via the internet web by the Colorado Division of Wildlife's (CDOW) "Natural Diversity Information Source" (NDIS), were reviewed and incorporated into this report in reference to state -listed threatened, endangered and species of "special concern"(CDOW 2008a, 2008b). A list of Birds of Conservation Concern (BOCC) and their habitats for the Southern Rocky Mountain Region and the Colorado Plateau was reviewed. This list is published by the USFWS through a Memorandum of Understanding with the Bureau of Land Management (BLM) and the US Forest Service (USFS) that places high conservation priorities for BOCC species (USFWS 2002). Not all of these BOCC species occur regularly in Colorado, some are present only as seasonal migrants. Of those known to breed in Colorado, only a portion are known or suspected to breed within the vicinity of the proposed tank storage yard. Avian literature sources including the "Birds of Western Colorado Plateau and Mesa Country" (Righter et al. 2004) and the "Colorado Breeding Bird Atlas" (Kingery 1998) were reviewed to determine the likelihood for species occurrence within the project area. Bird identification and taxonomic nomenclature are in accordance with that applied by the Colorado Breeding Bird Atlas Project (Kingery 1998). Mapped soil types, as published by the Natural Resources Conservation Service (NRCS), U. S. Department of Agriculture, were reviewed to determine the soil types and vegetation characteristics of the project site and surrounding property (NRCS 2008). WestWater Engineering Page 2 of 16 March 2009 The determination of the presence/absence of suitable habitat for Threatened, Endangered and "Sensitive Species" plants (TESS) was based on previous WWE observations of typical habitat occupied by BLM or USFS sensitive plants, the Colorado Natural Heritage Program (CNHP) Rare Plant Field Guide (Spackman et al. 1997), and locations of species documented in the CNHP statewide database. 3.0 LANDSCAPE SETTING 3.1 General Description The proposed tank storage yard is located on private lands, about 5.5 miles south of the Town of Silt and about 4.5 miles south of the Colorado River. The yard is adjacent to irrigated and dry - land meadows, as well as pifion/juniper woodlands (Cover Photo). The tank storage yard is situated between Dry Hollow Creek and West Divide Creek. Rural residences are widely spaced in the vicinity of the proposed tank storage yard along County Roads 311 (Divide Creek) and 331 (Dry Hollow Creek). The primary use of the surrounding area of the tank storage yard is agriculture/rangeland, wildlife habitat and recent natural gas extraction/development. 3.2 Soils There are two soil types found on and near the tank storage yard: Potts loam and Torriorthents- Rock outcrop complex. Both soil types are found throughout the Dry Hollow Creek area and support the dominant vegetation found in the area. Potts loam occurs on relatively flat terrain with slopes 6 to 12 percent. They are typically well drained, deep soils (80 inches). Dominant vegetation characteristic of the Potts loam soil is western wheatgrass (Pascopyrum smithii), bluebunch wheatgrass (Agropyron spicatum), big sagebrush (Artemesia tridentata), needle and thread grass (Hesperostipa comata), Indian ricegrass (Oryzopsis hymenoides), rabbitbrush (Chrysothamnus nauseosus) and bottlebrush squirreltail (Elymus elymoides). This soil type is found on elevations ranging from 5,000 feet to 7,000 feet. Torriothents-Rock outcrop complex soils are found on steep hillsides with slopes of 15-70 percent and adjacent ridge -tops. They are well drained but relatively shallow (4-30 inches). These soils are associated with steep slopes adjacent to Dry Hollow Creek and support vegetation communities generally of pinon pine (Pinus edulis), juniper (Juniperus utahensis) woodlands and mountain shrub, i.e., serviceberry spp.(Amelanchier spp.), Gambel's oak (Quercus gambelli), mountain mahogany (Cercoparpus montanus), etc. These soils have very severe limitations for land capability; are unsuitable for cultivation; and are primarily used for livestock grazing, recreation and wildlife habitat. 3.3 Vegetation and Topography The topography of the tank storage yard is generally flat with nearby rolling terrain in meadows, rangeland, and pifion/juniper woodland that is intersected by the moderately steep slopes of surrounding mesas. Elevation at the tank storage yard is approximately 6,100 feet. WestWater Engineering Page 3 of 16 March 2009 The dominant vegetative community at the tank storage yard consists of open -irrigated and dry - land meadows comprised of alfalfa and introduced grass species. Adjacent woodlands and rangelands are vegetated with overstories of pifion pine, Utah juniper, big sagebrush, rabbitbrush, mountain mahogany and sumac (Rhus trilobata). The riparian areas of Dry Hollow Creek and West Divide Creek contain narrowleaf cottonwood (Populus angustifolia), wild rose (Rosa woodsii) and grasses. These riparian areas lie approximately 1.0 miles from the tank storage yard site. 4.0 SURVEY METHODS Field surveys of the proposed tank storage yard were conducted by WWE biologists on March 20, 2009. The general project location, boundaries and reported features were verified and/or recorded with the aid of a handheld global positioning system instrument (GPS) that utilized NAD83/WGS84 map datum, with all coordinate locations based on the Universal Transverse Mercator (UTM) coordinate system within Zone 13. WWE biologists physically surveyed the area of the tank storage yard to identify and locate wildlife species, wildlife sign (tracks, fecal droppings, vegetation disturbance), vegetation communities and wildlife habitats. Vegetation types were determined through field identification of plants, aerial photography and on -the - ground assessments of plant abundance. Identification of plant species was aided by using pertinent published field guides (Whitson et al. 2004, CWMA 2007, Kershaw et al. 1998). Visual searches for raptor and other bird species nests were focused on the piton pine, Utah juniper, and rock outcrops within a 0.25 mile distance from the tank storage yard. Nest searches and bird identification were aided with the use of binoculars and song recognition, where needed. Photographs were taken of the general project location, surrounding vegetation and terrain, and specific biological findings (Cover Photo). 5.0 RESULTS OF SURVEY 5.1 TESS Plant Species Special status species of plants that may be present in the project area and their habitats are listed in Tables 1 and 2 in three categories: 1) Federally Listed Threatened or Endangered (1 species), 2) Federal Candidate Species (I species), and 3) BLM Sensitive Species (3 species). Nomenclature and habitat descriptions are based on the CHNP literature (Spackman et al. 1997). Table 1: Potential Federally -listed Threatened, Endangered and Candidate plant species Scientific Name Common Name Status* Habitat Preference Phacetia submulica Debeque phacelia C Chocolate -brown or Gray clay on Atwell Gulch and Shire members of the Wasatch Formation; sparsely vegetated steep slopes. Elev. 4,700-6,200 ft. Sclerocactus glaucus Uinta basin hookless cactus T Typically xeric and fine textured Quaternary and Tertiary alluvium soils overlain with cobbles and pebbles; cold desert shrub and piiion juniper communities along river benches, valley slopes, and rollin_ hills. * E= Federal Endangered, T= Federal Threatened C— Federal Candidate WestWater Engineering Page 4 of 16 March 2009 Table 2. Potential BLM sensitive plant species Scientific Name Common Name Habitat Preference Astragalus debequaeus Debeque milkvetch Varicolored, fine textured, seleniferous, saline soils of the Wasatch formation -Atwell Gulch member. Elevation: 5,100-6,400 feet Astragalus naturitensis Naturita milkvetch Sandstone mesas, ledges, crevices and slopes in piton juniper woodlands. Elevation: 5,000-7,000 feet Cirsium perplexans Rocky Mountain thistle Barren clay outcrops derived from shales of the Mancos or Wasatch formations; open and disturbed sites in mixed shrubland and pinon- juni,er woodland. Elevation: 5,000-8,000 feet No TESS plant species and/or their habitats were observed within the survey area of the proposed tank storage yard. 5.2 Federal Listed Threatened, Endangered, Candidate Wildlife Species No federal listed threatened, endangered or candidate wildlife species occupy the area of the proposed tank storage yard and, thus, none of these species will be affected as a result of the proposed project. Habitats for these species do not occur on the project site or the immediate area (USFWS 2008). However, designated critical habitat for the federally endangered Colorado pikeminnow and razorback sucker can be found from Rifle downstream (Burdick 2008). The critical habitat occurs just six miles downstream from the confluence of Dry Hollow Creek with the Colorado River. Colorado pikeminnow and razorback sucker are discussed in more detail in Section 5.4.2, Fish. 5.3 State Listed Threatened, Endangered, Special Concern Wildlife Species WWE biologists determined that two State -listed threatened or endangered species may occur within the project area and are listed in Table 2 below (CDOW 2008b). Potential state species of special concern are also listed in Table 2. Table 2. Potential State -listed Threatened and Endangered wildlife species Scientific Name Common Name State Status Habitat Preference Haliaeetus leucocephalus Bald Eagle T Open Water — Lakes, Forested Wetlands, Shrub Dominated Wetlands, Grass/Forb Dominated Wetlands; occurs in Garfield County; common winter migrant along stream corridors; elevation: 4,000 - 8,000 ft Vulpes macrotia Kit Fox E Xeric Upland Shrub, Pinyon -Juniper, Bitterbrush Shrub, Mountain Big Sage, Wyoming Big Sage, Big Sagebrush Shrubland, Desert Shrub, Saltbrush Fans & Flats, Greasewood Fans & Flats, Sand Dune (Shrubland), Disturbed Shrubland, Mixed Rangeland, grassland complexes; elevation: 4,500 - 6,500 ft WestWater Engineering Page 5 of 16 March 2009 Scientific Name Common Name State Status Habitat Preference Mesic Upland Shrub, Xeric Upland Shrub, Deciduous Oak Bitterbrush Shrub, Mountain Big Sage, Wyoming Big Sage Corynorhinus Townsend's SC Big Sagebrush, Shrubland, Desert Shrub, Saltbrush Fans & townsendii Big -eared Flats pallescens Bat Greasewood Fans & Flats, Sand Dune Complex (Shrubland) Disturbed Shrubland, Juniper, Pinyon -Juniper, riparian; elevation: 4,500 — 9500 ft Northern Standing or running water along w/other habitat types, Deciduous Oak, Bitterbrush Shrub, Mountain Big Sage Rana pi piens Leopard Frog SC Wyoming Big Sage, Big Sagebrush Shrubland, coniferous and deciduous woodlands; occurs in Garfield County; elevation: 4,500-11,000 ft. E= State Endangered, T= State Threatened, SC = Species of Concern During the surveys no State -listed threatened or endangered wildlife species were observed in the area of the proposed tank storage yard. Bald Eagle may visit areas along Dry Hollow Creek, West Divide Creek, adjacent mesas and slopes in search of winter forage in the form of fish and dead animal carcasses. The Colorado River corridor, approximately 4.5 miles north of the tank storage yard, is identified as winter foraging habitat and winter range for Bald Eagle (CDOW 2008a). No kit fox denning sites were observed in the area of the tank storage yard. Potential foraging habitat for kit fox does not occur within the area of the tank storage yard. Habitats for bat species for roosting, breeding and hibernating, in the form of caves, mine shafts, walls and cliffs, do not occur on the tank storage yard. Townsend's big -eared bat can occur in the area while foraging (CDOW 2008a). Potential habitat occurs along the stream corridor of West Divide Creek and Dry Hollow Creek for northern leopard frog. Breeding habitats for northern leopard frog, in the form of shallow and quiet areas of water, do not occur in the area of disturbance for the tank storage yard. 5.4 Birds of Conservation Concern (BOCC) 5.4.1 Raptors: Several raptor species (birds of prey) nest, reside, forage or pass through the general area of the tank storage yard. Raptor species that are common to the area include Golden Eagle, Red-tailed Hawk, American Kestrel, Cooper's Hawk and Great -horned Owl. Bald Eagle, a common winter migrant, is discussed in Table 2 of this report. Raptor species that are listed as BOCC in the Southern Rockies and the Colorado Plateau, and which may occur in the project area, are listed in Table 3. In addition to the BOCC list, seven other species of raptors that could potentially be found nesting in the yard area are also listed in Table 3. Numerous pillion pine, Utah juniper, near the tank storage yard are of sufficient height and density for tree nesting raptors. There is no suitable habitat along the adjacent mesas for cliff nesting raptors. WestWater Engineering Page 6 of 16 March 2009 Table 3. Raptor species that may be present in the project area Common Name Scientific Name BOCC Habitat & Breeding Records Northern Harrier Circus cyaneus Y • Grassland, shrubland, agricultural areas, and marshes. Nests in areas with abundant cover (e.g.,tall reeds, cattails, grasses) in grasslands and marshes. Also rs known to nest in high -elevation sagebrush. Cooper's Hawk Accipiter N • Cottonwood riparian to spruce/fir forests, including intim/juniper pi/juniper woodlands. Nests most frequently in pines and aspen. Sharp -shinned Hawk Accipiter striatus N • High density young, or even -aged, stands of coniferous forest and deciduous forests of aspen or oak brush with small stands of conifers. Red-tailed Hawk ButeoN jamaicensis • Diverse habitats including grasslands, pinion juniper woodlands and deciduous, coniferous and riparian forests. Nests in mature trees (especially cottonwood, aspen, and pines) and on cliffs and utility poles. Swainson's Hawkswainsoni Buteo Y • Typically, arid grassland, desert, agricultural areas, shrublands and riparian forests. Nests in trees in or near open areas. Golden Eagle Aquila chr saetos Y Y • Grasslands, shrublands, agricultural areas, pinon- juniper woodlands, and ponderosa forests. Prefers p nest sites on cliffs and sometimes in trees in rugged areas. AmericanFalco Kestrelsparverius N • Coniferous and deciduous forests and open terrain with suitable perches. Nests in cavities in trees, cliffs and buildings. Peregrine Falconperegrinus Falco Y • Pinon juniper woodlands and coniferous and riparian forest near cliffs. Nests on ledges of high cliffs away from human disturbance. Prairie Falcon Falco mexicanus 1, • Grasslands, shrublands, and alpine tundra. Nests on cliffs or bluffs in open areas. Great Horned Owl Bubo virginianus N • Occupies diverse habitats including riparian, deciduous and coniferous forests with adjacent open terrain for hunting. Northern Saw- whet Owlacadicus Aegolius N • Mountain and foothills forest and canyon country. Significant use of pinon juniper woodland and Douglas -fir. Long-eared Owl Asio otos N • Occupies mixed shrublands. Nests and roost in sites in dense cottonwoods, willows, scrub oak, junipers and dense forest of mixed conifers and aspens. 5.4.2 Birds of Conservation Concern (BOCC) other than raptors: In addition to raptors discussed above, WWE biologists surveyed the tank storage yard for the presence of sensitive or migratory BOCC that could potentially occur in the project area. BOCC habitat and nesting records, as described in the Colorado Breeding Bird Atlas (Kingery 1998, and references therein), Colorado Birds (Andrews and Righter 1992) and Birds of Western Colorado Plateau and Mesa Country (Righter et al. 2004) in the vicinity of the tank storage yard are summarized in Table 4. WestWater Engineering Page 7 of 16 March 2009 Table 4. BLM sensitive & migratory bird species that may be present in the project area Common Name Scientific Name Habitat & Breeding Records Pinyon Jay Gymnorhinus cyanocephalus • Pitton-juniper woodlands; nests in pifions or junipers. • Confirmed breeder in Garfield County in the vicinity of the tank storage yard. Brewer's Sparrow Spizella breweri • Sagebrush, greasewood and rabbitbrush in desert valleys; nests in sagebrush. • Confirmed breeder in Garfield County in the vicinity of the tank storage yard. Black -throated Gray Warbler Dendroica nigrescens • Mature pifion-juniper woodlands; nests on horizontal branches in pifion or juniper. • Confirmed breeder in Garfield County in the vicinity of the tank storage yard. Lewis' Woodpecker Melanerpes lewis • Open stands of cottonwood and ponderosa pine; nests in cottonwood in riparian settings, ponderosa pine and aspen. • Possible breeder in Garfield County. The quality of the sagebrush in the area of the tank storage yard is suitable for nesting Brewer's Sparrow. The pifion/juniper woodlands associated with the project area are suitable nesting habitats for Pinyon Jay and Black -throated Gray Warbler. No BOCC species were observed during the March 2009 field surveys. Field surveys were not conducted during the typical nesting period of May 15 to August 1 and, thus, BOCC species may not have returned to the area of the tank storage yard for this year's breeding and nesting season. 5.3 Terrestrial Species 5.3.1 American Elk and Mule Deer: CDOW places the tank storage yard within Game Management Unit (GMU) 42. The yard is situated within mule deer and American elk overall ranges, winter range, severe winter ranges, and winter concentration areas (Figures 1 and 2), (CDOW 2008a). The yard also lies within mule deer winter and critical winter ranges (Figure 2). CDOW defines "winter range" as "that part of the overall range where 90 percent of the individuals are located during the average five winters out of ten from the first heavy snowfall to spring green -up". CDOW defines a "winter concentration area" as "that part of the winter range where densities are at least 200 percent greater than the surrounding winter range density during the same period used to define winter range in the average five winters out of ten". "Severe winter range" is defined as "that part of the range of a species where 90 percent of the individuals are located when the annual snowpack is at its maximum and/or temperatures are at a minimum in the two worst winters out of ten." During the March 2009 surveys of the tank storage yard, numerous fresh deer tracks, beds, and fecal pellets were observed observed where these plant species occurred. The project area, during winter periods when deep snow covers low-lying vegetation, mule deer rely on the existing sagebrush above the snow for their primary food source, while elk rely primarily on available grasses for food. Adjacent areas of pifion pine and juniper trees provide necessary escape, thermal and loafing cover for deer and elk. 5.3.2 Black Bear and Mountain Lion: CDOW "NDIS" mapping shows the tank storage yard to be within overall range for black bear and mountain lion. The vegetation of the proposed WestWater Engineering Page 8 of 16 March 2009 project site does not provide adequate food sources for black bear to be routinely attracted to the area. However, it is not uncommon for black bear to travel through the surrounding area during periods of short natural food supplies as bears search for food. During these periods black bears may be attracted to human -related food sources such as garbage and cooking areas. Mountain lion typically follow migrating deer herds in search of deer as the primary food source. Mountain lion have large territories and are highly mobile as they search for food or new territories. Mountain lion prefer to hunt in rocky terrain with trees or shrubs. This habitat condition occurs within the West Divide Creek and Dry Hollow Creek drainages and mountain lion could travel through the area, especially when deer are present during the winter period. 5.3.3 Small Mammals: Common small mammal species (small game, furbearers, non -game) include mountain cottontail, coyote, bobcat, striped skunk, porcupine, deer mouse and least chipmunk. Fringed myotis and spotted bat are two bat species of the area that are considered "sensitive" by the BLM and would possibly forage for airborne insects through the area (Reid 2006). Townsend's big -eared bat is previously discussed in the section on "State Listed Threatened, Endangered Special Concern Wildlife Species". Roosting, breeding and hibernating habitats for bats in the form of caves, mine shafts, walls and cliffs do not occur on the tank storage yard. 5.3.4 Other Bird Species: The property's sagebrush, pi0on pine, Utah juniper, cottonwood riparian and grass under stories provide nesting and foraging habitats for various other migratory and non -migratory bird species, depending on the season of the year. Bird species observed during the survey included Scrub Jay, American Crow, Common Raven, and numerous Mountain Bluebirds. Mourning Dove is a common bird species of the area and would be expected to forage in habitats adjacent to the project site. Habitats for Wild Turkey do not occur in the area of the proposed tank storage yard and no sign of Wild Turkey was observed (CDOW 2008a). 5.3.4 Reptiles: Plateau striped whiptail, sagebrush lizard, side -blotched lizard, plateau lizard, bullsnake, and western rattlesnake are reptiles common to this region and could occur in the vegetation and terrain of the project area (Hammerson 1999). 5.4 Aquatic Species 5.4.1 Amphibians: Great Basin spadefoot is an amphibian species that could occur in the project area since it is common to the pifton/juniper woodland and sagebrush shrublands of the area (Hammerson 1999). This species breeds during summer periods in temporary pools in ravines and drainages that experience water flow after heavy rain events. Potential habitat for northern leopard frog occurs along the stream corridor of Dry Hollow Creek and West Divide Creek. Breeding habitats for northern leopard frog, in the form of shallow and quiet areas of water, do not occur in the area of disturbance for the tank storage yard. 5.4.2 Fish: No fish inventories were conducted as part of this survey. The tank storage yard is located approximately 1.0 miles from both West Divide Creek and Dry Hollow Creek. Both Dry Hollow Creek and West Divide Creek, near the project area, apparently have never been WestWater Engineering Page 9 of 16 March 2009 surveyed for fish species (Elmblad 2008, pers. comm.). Therefore, it is not certain if fish species occur in Dry Hollow Creek and West Divide Creek near the tank storage yard. The Colorado River lies approximately 4.5 miles north of the project site. The soils of the tank storage yard and adjacent drainages exhibit a high degree of erosion, which periodically affects silt loads and water quality of the Colorado River during significant runoff events. The nearest designated critical habitat for the federally endangered Colorado pikeminnow and razorback sucker is approximately 9.0 miles west in the Colorado River at Rifle, Colorado. Precipitation runoff from this site runs into Dry Hollow Creek and then to the Colorado River. Care should be taken at the site to prevent sediment from entering the nearby drainages and eventually to the Colorado River affecting water quality for fish and other aquatic organisms. 5.5 Army Corp of Engineers (ACOE) No wetlands or Waters of the U.S. (WOUS) were found on or near the project area. There will be no impact to wetlands/WOUS. 6.0 IMPACTS TO WILDLIFE 6.1 Wildlife Impact Assessment Activities associated with the tank storage yard and human presence may cause some wildlife species to avoid the area. Some species will become accustomed to the human activity, while maintaining a distance that is tolerable. Because the tank storage yard is already in existence as a well pad, there is expected to be minimal impact to wildlife. The project and its ongoing activities will contribute, however, to the overall cumulative impacts to the wildlife populations of the area that are experiencing gradual habitat loss, fragmentation, alteration and displacement through increased development. 7.0 MITIGATION RECOMMENDATIONS The following suggestions for mitigation are presented for maintenance and improvement of wildlife habitat quality as well as for the prevention of human -caused wildlife losses and/or conflicts. 7.1 Maintenance and Restoration of Habitat In the Rocky Mountain Region sagebrush communities have declined over the years and continue to do so as a result of development and habitat conversion. Sagebrush is a key food source for wintering mule deer on this project site and provides nesting and foraging habitat for a variety of migratory birds and small mammals (Photo 5). The grass understory of the current sagebrush vegetation and adjacent meadows provides valuable forage for wintering elk. After disturbance and removal, it generally takes decades to return sagebrush to its current condition through natural vegetative succession. Deliberate planting of sagebrush is possible, yet costly. Native Wyoming and basin big sagebrush should be considered and added to the re -vegetation plan of disturbed soils once grass/forb plantings have established themselves. Seed from the existing sagebrush vegetation should be used to create wildlife forage that has a mix of grasses, forbs and sagebrush. Any further energy exploration and/or development in this project area, should include efforts to maintain and/or restore the sagebrush community. WestWater Engineering Page 10 of 16 March 2009 Ongoing control of noxious and invasive weeds is recommended as an additional method to maintain native vegetation communities and favorable wildlife habitats. An "Integrated Vegetation and Weed Management Plan" is provided for this project in a separate report. 7.2 Off-site Mitigation Approximately 5.9 acres of wildlife habitat has been lost as a result of habitat alteration for the tank storage yard and the existing well pad. Habitat loss will be permanent in areas where vegetation reclamation is unsuccessful. Some species of wildlife will benefit when the disturbed vegetation of the tank storage yard corridor is reclaimed with introduced plant species; yet other species will not benefit as a result of a change in the native vegetation complex. For example, disturbance and removal of sagebrush will cause long term winter habitat loss to mule deer until native sagebrush becomes re-established. This habitat loss contributes to the overall cumulative impacts to wildlife as a result of increased development in this region. Efforts to conduct or contribute to off-site habitat mitigation in the local area, especially for deer and elk winter range, would help offset net habitat losses to these species. Off-site mitigation could be in the form of habitat improvement or habitat acquisition that protects key habitats in perpetuity. CDOW is a key agency to contact for suggestions and recommendations toward off-site wildlife habitat mitigation. 7.3 Planning for Sensitive Time Periods 7.3.1 Mule Deer and Elk: Wintering mule deer and elk would benefit if construction and/or energy exploration/development activities avoided the critical time for these species from December 1 to April 30. Energy industry activities are commonly limited during this time period on federal lands of the area in order to accommodate wintering mule deer and elk. Table 5 displays the most critical periods for deer and elk in the area of the tank storage yard project. Table 5. Seasonal critical periods in the area of the tank storage yard Concern Period Deer and Elk severe (critical) winter range December 1 — April 30 Migratory Birds primary nesting season May 15 — August 1 Red-tailed Hawk nesting period March 1 — July 15 7.3.2 Migratory Birds: Vegetation clearing activities, in relation to construction and development projects, would have less impact to migratory birds if conducted outside the primary nesting season of May 15 to August 1 (Table 5). 7.3.3 Raptors: Activities associated with the proposed project have the potential to impact raptor populations. No raptor nests were observed during the surveys and the 2009 raptor nesting season began March 1st for several species of raptors. In order to reduce the potential for impacts, if any active nests are located near the project area, it will be important that the project proponent schedule construction activities such that they do not interfere with breeding, nesting and brood rearing activities (Table 5). CDOW (Craig 2002) recommended raptor nest site avoidance standards for species common to the area are summarized below (Table 6). WestWater Engineering Page 11 of 16 March 2009 Table 6. Colorado Division of Wildlife raptor active nest avoidance standards Species Buffer Distance Avoidance Period (Seasonal Restirictions) Red-tailed Hawk 0.33 mile March 15 to July 15 Great -horned Owl No buffer recommended None Recommended Cooper's Hawk 0.25 mile April 1 to Au:ust 15 7.4 Other Mitigation Practices 7.4.1 Erosion Control and Soil Stability: Efforts to control soil erosion within the project area should be implemented. Disturbed soils within the tank storage yard will be highly susceptible to erosion and downstream water quality could be negatively affected by increased soil erosion. 7.4.2 Fences: Fences should be built and designed for easy passage of deer and elk, which will allow these animals to utilize the native and planted vegetation for forage, and to move about the adjacent areas freely as they search for food and cover. In addition, properly designed fences will prevent deer and elk from being injured or suffering death as a result of becoming entangled as they attempt to jump over or pass through a fence. Generally, wire fences that do not exceed 42 inches in height and have 12 -inch spacing between the top two wires will allow deer and elk to pass over a fence without conflict. The BLM utilizes these fence specifications for livestock fencing on federal lands (BLM 1989). The publication presented by CDOW, "Fencing with Wildlife in Mind" provides fence designs that are friendly to wildlife and is available at the CDOW web site at http://wildlife.state.co.us/NR/rdonlyres/B0D65D61-6CB0-4746-94F1- 6EE 194E 1 C230/0/fencing.pdf. 7.4.3 Traffic: Construction and service vehicle drivers should be encouraged to maintain modest speeds to reduce the chances of striking wildlife on public and private roads. Advisory signs with this cautionary message could be placed on roadways of the area. Posting speed limit signs where collisions with wildlife appear most likely, on County Roads and energy -industry roads, will help reduce losses to wildlife as a result of vehicle encounters. 7.5 Mitigation Summary Table 7 briefly summarizes the mitigation measures mentioned in this report, which can help to reduce impacts to wildlife as a result of the tank storage yard. Table 7. List of mitigation measures for wildlife Mitigating Measure Benetitin: Wildlife Maintain and restore native sagebrush vegetation Deer, elk, migratory birds, small mammals, reptiles, amphibians Off-site habitat improvement or acquisition Deer, elk, migratory birds, small mammals, reptiles, amphibians Seasonal scheduling of construction and development (see Table 5) Deer and elk, migratory birds, raptors Make livestock and property fencing wildlife friendly Deer and elk, large mammals, small mammals Store food & garbage securely, remove often Black bears Educate workers and guests, supervise Mountain lion WestWater Engineering Page 12 of 16 March 2009 Mitigatin . Measure Benefiting Wildlife children and small pets while outdoors Reduce vehicular speeds on access roads Deer and elk, large mammals, small mammals REFERENCES Andrews, R., and R. Righter. 1992. Colorado Birds: A Reference to Their Distribution and Habitat. Denver Museum of Natural History, Colorado. BLM. 1989. Bureau of Land Management Manual, Handbook H-1741-1, "Fencing". http://blm.gov. Burdick, Robert 2008. U.S. Fish and Wildlife Service Fish Biologist. Personal communication regarding fish surveys on the Colorado River. U.S. Fish and Wildlife Service, Grand Junction, Colorado, March. CDOW. 2008a. Colorado Division of Wildlife. Natural Diversity Information Source. http://ndis.nrel.colostate.edu/wildlife.asp. CDOW. 2008b. Colorado Division of Wildlife. Wildlife Species of Concern. Threatened and Endangered List. CDOW Web Home Page: http://wildlife.state.co.us/W ildlifeSpecies/SpeciesOfConcern/ThreatenedEndangeredList. Craig, Gerald R. 2002. Recommended Buffer Zones and Seasonal Restrictions for Colorado Raptors. Colorado Division of Wildlife, Denver. CWMA. 2007. S. Anthony, T. D'Amato, A. Doran, S. Elzinga, J. Powell, 1. Schonle, and K. Uhing. Noxious Weeds of Colorado, Ninth Edition. Colorado Weed Management Association, Centennial. Elmblad, William. 2008. Personal communication. Fisheries information for West Divide Creek and Dry Hollow Creek. Aquatic biologist (Retired), Colorado Division of Wildlife, Grand Junction. Hammerson, G. A. 1999. Amphibians and Reptiles in Colorado, Second Edition. Colorado Division of Wildlife, Denver. Kershaw, Linda, A. MacKinnon, and J. Pojar. 1998. Plants of the Rocky Mountains. Lone Pine Publishing, Auburn, Washington. Kingery, H. E. 1998. Colorado Breeding Bird Atlas. Colorado Bird Atlas Partnership, Colorado Division of Wildlife, Denver. NRCS. 2008. U. S. Department of Agriculture, Natural Resources Conservation Service. Web Soil Survey: http://websoilsurvey.nres.usda.gov/. Reid, F. A. 2006. A Field Guide to Mammals of North America, Fourth Edition. Peterson Field Guides. National Audubon Society, National Wildlife Federation, Roger Tory Peterson Institute, New York. WestWater Engineering Page 13 of 16 March 2009 Righter, R., R. Levad, C. Dexter, and K. Potter. 2004. Birds of Western Colorado Plateau and Mesa Country. Grand Valley Audubon Society, Grand Junction, Colorado. Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, and C. Spurrier. 1997. Colorado Rare Plant Field Guide. Prepared for the U.S. Bureau of Land Management, the U.S. Forest Service and the U.S. Fish and Wildlife Service by the Colorado Natural Heritage Program. USFWS. 2002. Birds of Conservation Concern 2002. U.S. Fish and Wildlife Service, Division of Migratory Bird Management, Arlington, Virginia. USFWS. 2008. Threatened & Endangered Species System, Species Report. Mountain -Prairie Region (6); http://ecos.fws.gov/tess public/SpeciesReport.do?lead=6&IistingType=L Whitson, T. D. (editor), L. C. Burrill, S. A. Dewey, D. W. Cudney, B. E. Nelson, R. D. Lee, and Robert Parker. 2004. Weeds of the West, Ninth Edition. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming Laramie. WestWater Engineering Page 14 of 16 March 2009 March 2009 Page 15 of 16 WestWater Engineering 5 ASPEN F,NVIRONMENTAL FIELD SERVICFS, LLC Project Compliance Management - Paxmittiarg. - Site Res lordtior Paleontological Survey Report Paleontological Surface Survey of Frac Tank Storage Area, Associated With Encana Oil & Gas, USA Well Pad F11E, Sec 11, T7S, R92W, Garfield Co., Colorado April 26, 2009 Prepared by, Kenneth L. Stadtman Aspen Environmental Field Services, LLC 529 25 1/2 Road, Suite B103 Grand Junction, 00..81505-. INTRODUCTION At the request of Criss C. Duncan, Aspen Environmental Field Services, LLC representing Encana Oil & Gas, USA, Inc., a paleontological surface survey of a Frac Tank Storage Area associated with a well pad site designated as FI 1E in Sec 11, T7S, R92W, 6th P.M. was conducted by Ken Stadtman on April 26, 2009. The survey was conducted by permission of the Bureau of Land Management (BLM), Glenwood Springs Field Office under Paleontological Resources Use Permit #C-60230, with an expiration date of Dec. 31, 2010. This survey to locate, identify and evaluate paleontological resources was performed to meet requirements of Executive Order 11593, The National Environmental Act of 1969, and other Federal laws and regulations that protect this resource. FEDERAL AND STATE REQUIREMENTS The BLM has requested the evaluation of the paleontological sensitivity of all geological formations along the right-of-way under the mandates outlined in the following laws and rulings: 1) The Historic Sites Act of 1935 (P.L.74-292; 49 Stat.666. 16 U. S.C.461et seq) 2) The National Environmental Policy Act of 1969 (NEPA) (P.L. 91-190; 31 Stat: 852, 42 U.S.C. 4321-4327) 3) The Federal Land Policy and Management Act of 1976 (P.L. 94-579; 90 Stat. 2743, U.S.C. 1701-1782). The BLM has released a Paleontology Resources Management Manual and Handbook H- 8270-1 (July, 1998) which establishes a classification system for ranking paleontological areas as to their potential for noteworthy occurrences of fossils. Under policy dictated by this handbook geological formations are ranked according to their paleontological potential: * Condition 1 -areas that are known to contain vertebrate fossils or noteworthy occurrences of invertebrate or plant fossils. Consideration of paleontological resources will be necessary if the Field Office review of available information shows that such fossils are present in the area. * Condition 2 -areas with exposures of geologic units or settings that have high potential to contain vertebrate fossils or noteworthy occurrences of invertebrate or plant fossils. The presence of geologic units from which such fossils have been recovered elsewhere may require further assessment of these same units where they are exposed in the area of consideration. * Condition 3 -areas that are very unlikely to produce vertebrate fossils or noteworthy occurrences of invertebrate or plant fossils based on their surficial geology, igneous or metamorphic rocks, extremely young alluvium, colluvium, or aeolian deposits or the presence of deep soils. However, if possible it should be noted at what depth bedrock may be expected in order to determine if fossililiferous deposits may be uncovered during surface disturbing activities. AGENCY CONTACT Karen Conrath, Geologist, BLM Glenwood Springs Field Office; Harley Armstrong, BLM State Paleontologist, Denver, Colorado. COMPANY CONTACT Criss C. Duncan, Aspen Environmental Field Services, LLC, Grand Junction, Colorado. GEOLOGIC & PAELONTOLOGIC OVERVIEW OF EFFECTED AREA Wasatch Formation (lower Eocene). The Encana F 11 well pad is in an area where the surface geological formation is the Wasatch Fm of Lower Eocene Age (55mya). At the frac storage tank area and well pad site, the formation is primarily a rich -appearing brown colored, deeply bedded soil. It lies at the upper end of a sloping pasture that is grass covered and at the base of some low hills. In the Parachute area, researchers have considered the member to be the Shire Member which is comprised of variegated mudstones with interbedded fluvial sandstone and siltstone lenses. Mudstones range from red, purple, tan, or white in color. Paleontological resources of the Roan Plateau and southern Piceance Creek Basin have been professionally studied since the turn of the 20th century. Earl Douglas collected vertebrates for the Carnegie Museum in 1903, followed by Leroy Kay in the 1950's. Vertebrate, invertebrate and plant fossils were collected for the University of Colorado Museum in Boulder in the 1920's by T.D. Cockerall and in the 1970's to present by Allen Kihm, Peter Robinson and Paul Murphy. In the 1930's and 40's, Bryan Patterson collected vertebrate fossils for the Field Museum of Natural History in Chicago, IL. David Kohls worked several localities for the Smithsonian in the 1980's and Ivan Kladder's collection of the 1960's went to the Museum of Western Colorado in Grand Junction, CO. Over 180 known localities occur in the Wasatch Fm between Rifle and Parachute. These localities contain a rich and scientifically important terrestrial late Paleocene/early Eocene mammal fauna. Fossils of birds, reptiles and freshwater invertebrates are also found (Scheetz, 2004). SURVEY RESULTS A pedestrian survey for paleontological resources was made of the Frac Tank Storage Area, situated immediately south of the FI IE Pad. No fossils were found. Nothing that was found during this survey was of any significance and no further monitoring of the area is recommended. SELECTED BIBLIOGRAPHY Armstrong, H.J. and A.J. Kihm, 1980, An evaluation of fossil vertebrate resources of the Glade Park and Mount Garfield Planning areas, Grand Junction District of the Bureau of Land Management, western Colorado: Grand River Institute, Grand Junction, Colorado. Donnell, John R, 1969, Paleocene and Lower Eocene Units in the Southern Part of the Piceance Creek Basin, Colorado. Geol. Survey Bull 1274-M. & W.E. Yeend, 1968, Geologic Map of the Housetop Mtn. Quad, Garfield and Mesa Counties, Colorado. USGS Misc Field Studies Map, MF-1965. , W.E. Yeend, 1988, Geologic map of the Hawxhurst Creek Quad, Garfield and Mesa Counties, Colorado. USGS Misc Field Studies Map, MF-2026. W.E. Yeend, M.C. Smith, 1986, Preliminary Geologic Map of the Grand Valley Quad, Garfield Co, Colorado. Misc Field Studies Map; MF-1883. , W.E. Yeend, L.J. Schmitt & M.C. Smith, 1992, Geologic Map of the DeBeque Quad, Garfield and Mesa Counties, Colorado. USGS Misc Field Studies Map, MF-2201. Franczyk, K.J., J.K. Pitman & K.J. Nichols, 1990, Sedimentology; mineralogy; and depositional history of some uppermost Cretaceous, lowermost Tertiary rocks along the Utah Book and Roan Cliffs east of the Green River: USGS Bull. 1787, 27p. Hail, W.J., Jr. & M.A. Smith, 1997, Geologic map of the southern part of the Piceance Creek Basin, northwestern Colorado. Misc. Investigations Series Map, 1-2529. Johnson, R.C. & F. May, 1978, Preliminary stratigraphic studies of the upper part of the Mesa Verde Group, the Wasatch Formation, and the lower part of the Green River Formation, DeBeque area, Colorado, including environments of deposition and investigation polynomorph assemblages. Misc. Field Studies Map, MF-1050, Murphy, Paul C. & David Daitch, 2007, Paleontological Overview of Oil Shale and Tar Sands Areas in Colorado, Utah and Wyoming. Prepared for U.S. Dept of Interior, BLM. Patterson, Bryan, 1939, New Pantodonta and Dinocerata from the upper Paleocene of western Colorado: Field Mus Nat. Hist. Pub. 1441, Geol. Ser., v.6, no.24, p.351-384. Robinson, Peter, E. Hall & S.A. Bilbey, 2005, Paleontological survey report for Encana Oil & Gas Inc. (USA), access road and well pad I2SW, Garfield Co., Colorado. Scheetz, R., 2004, Paleontological survey report for Williams Production Well Pad GM #13-4, proposed access, Garfield County, Colorado. Wood, A.E., 1962, The early Tertiary rodents of the family Paramyidae, Am. Philos. Soc. Trans., 1962, v. 52, pt.1, 261p. ENCANA.. EMERGENCY RESPONSE PLAN ERP Quick Reference Guide ENCANNA. 8.404. • N 4e11a ERP QUICK REFERENCE GUIDE Revised; 20114Jen-19 EMERGENCY LEVEL ASSESSMENT An emergency Is an unexpected or unplanned event that demands immediate attention and hes or could ramuli In harm to people, damage to property or the environment, loss of process or prefL or negative impact on rerpnraia linage and repufetion_ Emergencies are defined in throe levels, that oro univoreolly rocognleod Immo. and familiar to most response participants. Levet 1 There la no potential danger to outside company property or right-of.way, no threat to the pubrlc, and Company personnel can handle the situation. Notification to the Supervisors and other authnrifiee',lentil he enmity Fe mpfes of level 1 emergencfee include: • An ell ar saltwater spill of any magnitude that is confined to the lease and does not flow onto private, slate or failure' properly. Or enter a stream, river, pond, dry drainage. • An employee or contractor marry accident terther Industrial or vehicular) resulting in minor Injury the! may require medical attention. but does not require hospitalization. • miner mmoady damage That does not compromise the safe operation of vohicloo or equipment Level T 1 potential exists for the emergency to extend beyond Company property. Therefore, outside municipal services end the state regulatory agencies may need lo be alerted and kept informed al the situation. Immediate nodfICatlon to 111e supervisor is mandatory. Examples of level 2 emergencies include; • An oil or saltwater spill of any magnitude that leaves the tease and Rowe onto private, stele or leder rel property, or that enters i1 area river, pond, or dry drainage. • An employee or contractor injury accident (either in duatrfal or vehicular) reveling in hoepittllmtion • Property damage resulting from fires, explosions, impact, or contacts that exceed the safety threshold of the equipment or tho structure. Level I Safe operating control has been lost, or a fatalityer a potential for serious injuries or loss exists or has occurred, or put.& safety may be Jeopardized, or mere is a significant and ongoing environmental impact. Examples of Level 3 emergendei Include: • An oil or saltwater sere of any magnitude that enters a watercourse and threatens the Intake of a municipal or private water supply. • Any leak or spill (controlled or uncontrolled) that causes the evacuation of nearby residences, buildings, or facilities, Of causes significant environment damage • A fire, explosion, impart, ar contact resulting In the destrucllon of company property, injury to the general public and/or damage to private ur public structures. • An employee ar oontrac1or injury accident (either industrial or vehicular) resulting In a fatality. NEWS MEDIA 1t Is important to develop and maintain a good working relationship with the news media from the outset of any emergency. T ho way that both field and corporate personnel interface with reporter's will effect the public perception of the rvnipany and the elfeuivwwss of our response. Me news media have a responsibility to raped on the indite/1f. we have a responsibility to provide emirate Information in a timely, consiatent, and professional manner. Sometimes the prodieulere of the Incident aro not knorvri. until the facts ere dear, answers to media queries should be as follows: "On Natal, at IUmee, there has bean a (whet) at (wtlgre) that Involved company ittgWtiep. employees. eau temente. A camphor} slatamnnt will he issued by the Company es exon se tiro facia have been determined. UnUI then, no further Information la available." Until Media Relations has been engaged, the Emergency Coordinaifon Coker (ECO) will deal with media Inquiries. ROLES AND RESPONSIBILITIES REGION EMEROCNCV MANAOIi:MCNT TEAM (RLMT).. le Ensure that reseurGes have been allocated to meet the on•sife priorities U Resource any necessary expertise to assist in developing methods and/or procedures to contain the emergency and lessen the impact U Assess dru nealaude end Impact of the emergency woos the value areas of the corporation. I.e., people, environment. financial, end public Image. U Obtain the relevant Information to develop a media management plan and communlcaeona to the President and Corporation. Participate in a Review the response effort for Improvement opportunities untie the emergency has been cased down. xz -- IS IS SUPPORT U Eetobtoh a roliebia moans of communlcatlona with the alta. ❑ Provide immediate technical Input lo the Site Safety Team Lean, OSC, and ECO regarding the anticipated hazards, risks, lately of response efforts and site security. U Assist in determining the emergency level and escalation potential. U Contact the Reekmal Ct iS representative. U Plan to travel to the site or arrange for local cupped that men arrive stoner. o Se available to provide support while travelling to the silo. O Assist the OSC and the ECO with the administration of the Incident command response system. O Assist in the containment rind 1r litigation of the event. ❑ Assist In identifying the agencies that need to bo notified. to Assist the ECO In making the necessary regulatory ndtificatlnns Cl Provide regular updates to the Region JHS. U Assess the foes potential and environmental damage. U Aseese whether any regulatory vtolatkens occurred. 0 Provide technleal assistance to limit additional or pretential violations_ O Coordinate or participate In the Invealigetinn ❑ Evaluate reports and ensure that preventative methods and procedures are developed. RE{rluN LiMbrilei rNI.,Y MN/AUER (itt_M) 1.1 Consult with the PIM In 801554 the potential nsk to the nnrnnretinn and rho risk mitigation options. Cl Make or support any dedslons required to mitigate risk. to Communicate the emergency response abet risk and risk mitigation to the President. Lt Participate in the REMT as the corporate representative and liaison to tho President. 0 Make the decision to notify the Division Crisis Manager and follow-up accordingly. TACTICAL SUPPOttt TEAM U Coordinate or carry out 111e assigned role safely and to ensure that the OSC or Deputy Onsite Commander is regularly updated on the status and any problems or apparent risks. 0 The type of support roles and associated responsibilities are: Cl Deputy Onsite Commander - assists the OSC. CI Sfte Safety - advice on safety procedures and incident command system response. LI I noietira Planning Chief - technlcel support. order resources, porsonnal and equipment, O Media Officer - field media Issues end general public inquiries. U Public Protedfon Officer - coordinate site security and public safety actiions. U Public Evacuation Leader - locale, advise, and ecciot pubo nveou91ian Roadblock Crews - establish roadblocks to secure emergency planning mne. O Switchboard Lead - =elves and directs Incoming cattle U Telephone Nobficstlon Lead - notification of nearby readmits In the emergency planing zone. O Documentation Lead - assists the OSC with documentation requirements. U Rovers - stand-by personnel prepared to assist any support role. ROLES AND RESPONSIBILITIES jcontinued) ON-SITE COMMANDER (OSC) U Assess the Site and the situation br hazards, evaluate the ocelot and palmitin! risks end establish a safe location nor the on -scene command post. Review and complete the Incident Assessment Checklist. U Assess the type of support roles required to manage the emergency Typical support rotes are: ❑ Deputy On -Site Commander owlets tho OSC, O Site Safety- advice on safety procedures and inetlurl command system response. U Logistics Planning Chief -- teetaricoI support, order resources. personnel end equipment. U Media Officer - field media Issues and general public Inquiries. d Pubes Protection Officer- coordinnte sato security and pubife safety actions. q Pubic Evacuation Leader - locate, advise. end assist pubic evacua tion. U Roadblock Crews - establish roadblocks to secure emergency planning zone. ❑ Swttchboerd Lead - receives and directs incoming calls. 0 Telephone Notification Lead - notification of nearby residents In the emergency planning zone. U Documentation Lead - assists the OSC with documentation requirernenls. o Rovers - eland -by personnel prepared lu assist any aupport role. U Get help for any injuries first, then get help for other iron -life threatening events ea soon es possible. if required, enlist the aid of Other Compeny employees or Contract employees in your area. L] Designate team feeds and assign them to the required support roles with primary emphasis to ensure that all on situ personnel are accounted for, barriers and roadbrocke are to pima and staffed, personnel protective equipment le available and pareonnel and public safety Is assured. U (erect the TaCUca! Support Team to rsporl back as soon as pnsrtihia nn the status of their assigned responsibiltiea. LI if there are injured persons en -alta, administer irnmediale first aid and range fur lraneperl to a medical Manly as soon as practical (11 remote, meet the ambulance. or airlift, or drive victim to hospital, clinic, dolor, eto.). LI Contact and Inform the ECO of aN avnnls that larva nrr.t,rred cr may nrcur and declare the initial emergency Level -1, 2,1 viskiFMI_Ii(31:tICY COORDINATION 0 O Re-evaluate the potential for the emergency level to escalate In consuitation with the OSC. U ASeeee and affirm are required on scene support roles in consultation With the OSC. O Keep the situation Calm and instill Confidence In tho response roam and effort. U Replace the OSC if a contractor with company personnel, if appropriate. U Meet era OSC to deciding on immediate action to be taken. U Determine if itis best to go directly to the accident site or remain at a Mare central location. U Establish an On -Site Command Post for level 2 and 3 emergencies. O Antidpete and bads fill for the OSC. Ll Coordinate replacement of the Tactical Support Team members doponding on the duration of the emergency. U Coordinate notification to families and next-of•kht as required by the nature of the Injuries. U Contact the FEM. U Relay as muds of the who, what. wryer°, when information as possible, the actions that have been undertaken or that are underway and any immediate decisions sequined. Use the Time and Event Log,. U Provide input to the FEM regarding the need for additional personnel, technical services, company specialists. etc. O Contact the Business Unit ENS representative and determine if they can assist with the response at the site or to remain an standby to assist with the investlgaUon. L7 Amstel the appropriate government agencies in establishing an Dir -Site Emergency Operations Center. induding a Public and Melia Ince fry Rimm for level 3 emergencies. U Keep the lines of cammtrnication open to both the OSC and the FEM. U Correia with the OSC on 'call down el the emergency. 0 Supervise the collodion of all relevant information inductee lop sheets. occident reports. Safe Work Permits, OSHA documents arid other appropriate company and government agency documents. Secure any evidence that may be relevant to the investigation. U Collect/document as much of the who, what, where, whim' Infurmagon as peeelble, the actions That have been undertaken or that are underway. and any immediate decisions required. Use the Inckient Assessment Checklist. U Deere and prioritize critical issues and evaluate Mho need for additional resauroes_ O Establish a reliable na cis fur dose communications with the incident Commander. U Where the potential for more injury or damage ordata, axaaae the nature of the threat and if life safely is assured, take Immediate action to minimize those dangers. This may include shutting off energy sources, dosing valves to limit fuel spits, extinguishing small tires. and calling the police, sire department, etc., as necessary. O A eafo perimeter shook' he eatahllshed around the accident site that secures the area from onlookers, media, and unauthorized and unnecessary personnel, Utilize the polka andlor sheriffs department to accomplish this task. Local law enforcement omdals have an obligation to protect the public and they will help to secure the scene if requested. O As soon as prectirlrl, the OSC nivel(' lake steps necessary to secure the silo. The primary reasons for securing the site during en emergency situation are as to minimize further danger of Injury, loss, or damage, to control outside Involvement and to preserve the lasts for a Truthful investigation. ❑ On-site access shourd be limited to appropriate Company personnel, rxurlrarrnrw, end emergency peroonnei. On not let employees, carer -actors, or any other individual who simply wants to "rook al what happened' wander about 1110 site. CI II an unauthorized person (Trespasser) refuses to honor the access limitations and enters the secured area, inform that person that they are trespassing and demand that they leave emmedlately. Ii they refuse to loavo Iho promisna, telephone the Iocal law enforcement authority and ask them to remove the Iraapaaser and notify tho trespasser and the authe itbs that we will press charges. O Continually re•assass the situatton and risk to life safety. U Maintain control Well on-site operations. ❑ lAalntaln regular communications with the ECO. O Gina an 'all dear signal to on scene personnel when safe to do so. O Once the 'ail Clear signal has been issued, the site must remain secured in preparation for the investigation. ❑ Keep Corti unicarlons calm and re -affirm confidence in the response Learn and effort. U Consult with the ECO end re-evaluate the potential for the emergency leve to escalate. Confine the current emergency level . 1, 2, 3. O Continuously ureses the potential riok to the corporation and trio cask mitlgetkan options. O Antidpete and back fill for the ECO. L] Assist the ECO In deciding on immmediate, near-term actions to be taken. 0 Contact the REM and advise on tho current emergency level. O Relay es much of the who, what, where, when information as possible. the actions and that have been undertaken or that are underway and any immediate decisions. Usti Monroe and Event Log. U Advise the REM on the need for essistarroe from business support functions such as Human Resources, Legal Counsel. Media Relations or Region level EHS L] Advises on the need to assemble the REMT based ori the nature end escalation patented of the emergency. ❑ Keep eta lines of eommunrcetion open to the ECO and tho REM. O Resource additional personnel, technical services. company specialists, etc., as required by the ECU. ❑ Coordinate the relationship between the REMiREMT and the field emergency response effort with specific emphasis on resource availability and media management. U Assemble as required and coordinate any Corporate business groups such as Human Resources, Legal Counsel, or Media Reisttons to support the needs and efforts for level 2 emergerwy response. U Assemble as required and coordinate the oporotion of the RENT for level 3 emergency response- Designate support personnel to the REMT such as scribe(s), telephone communication 000rdlnator(s), elc. The entire grout) may not be assembled for every situation. but designated members will always be on tall. U Coordinate a review of tho response ailort for improvement opportunities once the emergency hem been called down. U Consult the ECU for appropriate 'call down' of the emergency. 0 0 SOUTH PARACHUTE - EMERGENCY NOTIFICATION CHART J W LU J ON-SITE COMMANDER most senior employee or company representative on the site) EMERGENCY COORDINATION OFFICER PRODUCTION David Grisso W 970-285-2601 C 970-250-9660 Gerald Papez C 970-260-8966 Ross Deters W 970-285-2725 C 970-309-8580 Scott Parker W 970-285-2787 C 970-379-9798 DRILLING & COMPLETIONS John Grubich W 970-285-2631 C 970-379-6735 Mark Balderston -Frac W 970-285-2692 C 970-629-5846 Dave Archuleta -Backup C 970-623-4605 Kirby Burchett-WrkOvr C 970-250-1179 Dan Hacking -Backup C 970-778-1063 PLANT/PIPELINE Gas Control (Parachute) W 970-285-2615 T 800-791-7691 Brad Ankrum W 970-285-2630 C 435-260-1673 Rocky Erb C 970-210-8571 Floyd Alvey C 970-319-0357 Greg Gohn C 970-319-7506 FIELD EMERGENCY MANAGER LEAD PRODUCTION DRILLING & COMP. PLANT/PIPELINE Jim Walcutt Tim Baer Jesse Wood W 720-876-3726 W 720-876-5059 W 720-876-5064 C 303-204-5025 C 720-560-3131 C 303-621-2433 Tina Johnson W 720-876-5083 C 303-249-6370 REGION EMERGENCY MANAGER Darrin Henke W 720-876-5151 C 303-819-7316 EXECUTIVE LEAD USA DIVISION PRESIDENT Jeff Wojahn W (720) 876-5200 C (303) 807-5921 SUPPORT Tim Blackwood Finance W 720-876-5537 Rob Barclay Human Resources W 720-876-6164 Ray Zoller Information Services W 720-876-3415 Mary Viviano Legal W 720-876-5020 Helen Capps Land W 720-876-3644 C 303-512-3329 C 303-547-8510 C 303-886-1980 C 720-272-6800 C 303-886-1980 OSNA DIVISION PRESIDENT Randy Eresman W (403) 645-4902 C (403) 510-6831 LANDOWNER / MEDIA ► RELATIONS Hotline 970.285-2777 Doug Hock W 720-876-5164 C 303-328-7048 TACTICAL SUPPORT TEAM (Third party support, such as manpower, equipment, services, supplies, etc.) EMERGENCY CONTACTS NP Gate Guard (970) 285-9496 Ambulance — Hard line 911 Amb/Fire/Police — Sat/Cell (Garfield County) (970) 625-1899 AmblFirelPolice — Sat/Cell (Parachute) (970) 285-7711 Fire/Police — Hard Line 911 Hospital (Rangely) (970) 675-5011 Hospital (Meeker) (970) 878-5047 Poison Control (800) 332-3073 State Patrol (970) 824-6501 Sheriff (Rangely) (970) 675-8311 Sheriff (Meeker) (970) 878-5023 Care Flight (St Mary's) (800) 332-4923 AGENCY CONTACTS BLM (Grand Junction) 970-244-3050 BLM (Meeker) 970-878-3800 COGCC (Denver) 888-235-1101 COGCC (Rifle) 970-625-2497 CDPHE 877-518-5608 National Response Ctr 800-424-8802 Federal OSHA 800-321-6742 CO One -Call 800-922-1987 Pipeline Quick Reference 811 PUC (8-5 M -F) 303-894-2854 After Hours Pager 303-826-1313 Corporate HQ - OSNA On Call 24 Hours (403) 645-7777 Loss Control/ Insurance Peter Duthie W (403) 645-3459 C (403)471-1323 EHS OFFICER USA Region Byron Gale W 720-876-3626 G 303-819-7318 SECURITY ADVISOR USA Region John Lipka W (720) 876-3748 C (303) 807-8974 R (303) 567-0928 GPS Coordinates — Parachute Office Degree N: 039° 28' 29.06" Degree W: 108° 05' 16.51" MeetMe Conference Line Phone: (877) 645-4333 Access Code: 8765248 Chairperson PIN: 8953 bourn raracnute tat F' Rev.: March 23, 2009 LEAD SITE SAFETY/ENVIRONMENT Kenny Allred W 970-285-2635 C 435-260-1669 S 877-306-2732 Danny Knutson W 970-285-2709 C 970-309-2510 S 877-621-6946 Terry Gosney W 970-285-2687 C 970-309-8155 5 877-494-4227 Safety On -Call 970-210-8755 Enviro. On -Call 970-319-9173 EHS OFFICER Brant Gimmeson W 720-876-5030 0 303-819-7323 H 303-680-1568 AGENCY CONTACTS BLM (Grand Junction) 970-244-3050 BLM (Meeker) 970-878-3800 COGCC (Denver) 888-235-1101 COGCC (Rifle) 970-625-2497 CDPHE 877-518-5608 National Response Ctr 800-424-8802 Federal OSHA 800-321-6742 CO One -Call 800-922-1987 Pipeline Quick Reference 811 PUC (8-5 M -F) 303-894-2854 After Hours Pager 303-826-1313 Corporate HQ - OSNA On Call 24 Hours (403) 645-7777 Loss Control/ Insurance Peter Duthie W (403) 645-3459 C (403)471-1323 EHS OFFICER USA Region Byron Gale W 720-876-3626 G 303-819-7318 SECURITY ADVISOR USA Region John Lipka W (720) 876-3748 C (303) 807-8974 R (303) 567-0928 GPS Coordinates — Parachute Office Degree N: 039° 28' 29.06" Degree W: 108° 05' 16.51" MeetMe Conference Line Phone: (877) 645-4333 Access Code: 8765248 Chairperson PIN: 8953 bourn raracnute tat F' Rev.: March 23, 2009 • 0 • Outside Agencies Emergency Contact List Service Name Address Phone Emergency 911 Air Evacuation St. Mary's Care (alight Grand Junction, CO (800) 332-4923 Ambulance & Fire Parachute Fire Dept. Parachute, CO (970) 285-7711 Hospital Glenwood Springs Valley View Hospital 1906 Blake Avenue Glenwood Springs, CO (970) 945-6535 Ilospital Grand Junction St. Mary's I lospital & Medical Center Grand River 1-Iospital District 2635 N. 7eh Street Grand Junction, CO 501 Airport Road Rifle, CO (970) 244-2273 (970) 625-1510 Hospital Rifle Medical Clinic Battlement Mesa Clinic 73 Sipprelle, Suite K Parachute, CO (970) 285-7046 Poison Control (800) 332-3073 (970) 285-7630 Police Parachute Police Dept. - 222 Grand Valley Way Parachute, CO Sheriff (Jariield County Sheriff 107 8t'' Street Glenwood Springs,CO (970) 945-0453 State Patrol State of Colorado 202 Centennial Drive Glenwood Springs,CO (970) 945-6198 State Patrol (Dispatch) (970) 625-8095 ENCANA.. Spill Plan Emergency Response For Midstream Construction May 2008 TABLE OF CONTENTS 1.0 INTRODUCTION 1 2.0 SPILL PREVENTION 2 3.0 SPILL REPORTING PROCEDURES 3 3.1 INTERNAL NOTIFICATION 3 4.0 EXTERNAL SPILL REPORTING REQUIREMENTS 4 4.1 WHAT ISA REPORTABLE SPILL? 4 4.1.1 Oil, Condensate, and Produced Water 4 4.1.2. Chemical and Refined Hydrocarbon Spill 4 4.1.2.1 Release into Water 5 4.1.2.2 Releases onto the Ground 5 4.1.3 Cumulative Releases 5 4.2 WHO IS TO REPORT? 5 4.3 WHEN TO REPORT AND WHAT TO REPORT? 5 5.0 INFORMATION TO REPORT 7 5.1 INITIAL VERBAL REPORT 7 5.2 FOLLOW-UP WRITTEN REPORTS 7 5.3 VERBAL REPORTING PROCEDURES 8 6.0 GENERAL SPILL RESPONSE PLAN 10 6.1 INITIAL COMMUNICATION AND ACTION PROCEDURES 10 6.2 SUPERVISOR'S RESPONSIBILITIES 12 6.3 "FIRST RESPONSE" COMPANIES 12 7.0 SPILL MANAGEMENT 13 7.1 SMALL VERSUS LARGE SPILLS 13 7.2 REMEDIATION FOR LARGE SPILLS 13 7.2.1 Spill Containment 14 7.2.1.1 Land Containment Methods 14 7.2.1.2 Containment on Waterways 15 7.2.2 Recovery 16 7.2.3 Initial Treatment 17 7.2.3.1 Soils Handling 17 7.2.3.2 Brine Spills 18 7.2.3.3 Hydrocarbon Spills 19 EnCana Spill Plan Emergency Response May 2008 Figure 6.1 Figure 6.2 Figure 6.3 Figure 6.4 Figure 6.5 Figure 6.6 Figure 6.7 Figure 6.8 Figure 6.9 Figure 6.10 Appendix A Figures Detail of Interceptor Trench Trenches to Intercept Overland/Subsurface Flow Culvert and Earth Dam Weirs Water Bypass (Underflow) Dam Various Means of Connecting Wood or Styrofoam Booms Jellyroll and Sausage Roll Improvised Sorbent Barriers Boom Angle Deployment vs. Water Velocities Multiple Angled Booms Possible Schemes for Boom Attachment Snow Fence and Sorbent Barrier EnCana Spill Plan Emergency Response May 2008 1.0 INTRODUCTION The purpose of this document is to provide to construction, drilling, completion and production operations personnel for EnCana Oil & Gas (USA), Inc. (EnCana) the following information as it relates to spill incidents: • Reporting requirements; • Initial spill response procedures; • How to access emergency response procedures; and • Initial remediation techniques. This document is intended to provide operations personnel with sufficient information .so they can readily assess a spill, know which government agency to report to, what to report, and how to address the spill. This document only covers spills that are "manageable" with the tools and resources that operations personnel have readily available to them. The document does not cover unmanageable or catastrophic spills that require specialized expertise and equipment. Regardless of the size or type of spill, if difficulties or uncertainties arise, contact EnCana's Parachute, Colorado Office staff for advice and assistance. Please refer to the contact information provided in Section 2.1. This Project Specific Spill Response Plan covers spills associated with construction, drilling, completion and production operations and services associated with them. A copy of this Project Specific Spill Response Plan is on file at the following locations: EnCana Oil & Gas (USA), Inc. Parachute, Colorado Office EnCana Spill Plan Emergency Response May 2008 1 2.0 SPILL PREVENTION Care should be taken to prevent spills, leaks and releases. Two variables must be considered if a release occurs: Rate of flow: Is variable, depending on size and location of the related failure. Maximum expected potential rate of flow is not anticipated to exceed the amount of total liquid per day transferred using the pipeline. Personnel routinely perform visual inspections of piping to detect any failures. Total quantity of fluid that could be discharged: Is variable, depending on the rate of flow though the pipeline and the location of the failure. The maximum potential release would not exceed the volume for the pipeline and tank of the fluid being transferred. EnCana has engineering controls and management practices in place to prevent spills. Secondary containment is provided for oil spills at permanent facilities. For temporary surface. pipelines EnCana has designed the pipeline with block valves which isolate sections of the pipeline to limit a release should one occur. Storage tanks are designed with isolation valves to ensure containment. EnCana's standard operating procedures require that any fluid transfer though temporary surface pipelines will be manned 24-hour a day until the -transfer has been completed. If a spill is discovered then the following actions and reporting will be initiated immediately. EnCana Spill Plan Emergency Response May 2008 2 3.0 SPILL REPORTING PROCEDURES Spill reporting is an important part of environmental management. There can be fines and penalties imposed upon a company for not reporting a spill if it is considered a "reportable" occurrence under the legislation. This plan outlines when a spill is reportable, and to whom the spill must be reported. In addition to reporting to regulators, EnCana's personnel must be informed, and an incident/accident report completed and submitted to the EnCana's Parachute, Colorado Office. 3.1 INTERNAL NOTIFICATION Field personnel are to notify the EnCana's Parachute, Colorado office staff immediately upon locating a spill, release, or an unnatural event. The EnCana's Parachute, Colorado office staff will notify the required local, federal and state agencies. EnCana Oil & Gas (USA), Inc. — Parachute, Colorado Office (970) 285-2600 Brad Ankrum — Piceance Midstream Operations Manager Office: (970) 285-2630 Cell: (435) 260-1673 Dewey Neely — Construction Coordinator Office: (970) 285-2632 Cell: (970) 250-9462 Bob Anderson — Construction Inspector Office: (970) 285-2622 Cell: (303) 880-0038 Jess Wood — Team Lead Office: (303) 389-5064 Cell: (303) 885-5559 Home: (303) 621-2433 Brant Gimmeson — EHS Advisor Office: (720) 876-5030 Cell: (303) 819-7323 Home: (303) 680-1568 EnCana Spill Plan Emergency Response May 2008 3 4.0 EXTERNAL SPILL REPORTING REQUIREMENTS External spill reporting requirements are state and federal requirements as they relate to "reportable" spills. 4.1 WHAT IS A REPORTABLE SPILL? 4.1.1 OIL, CONDENSATE, AND PRODUCED WATER In Colorado, spills are under the jurisdiction of the State of Colorado Oil and Gas Conservation Commission. Reportable spills are defined as: • ANY spill or release that may impact waters of the State. These spills are reportable as' soon as practicable. • Any spills in excess of 20 barrels (840 US gallons), are reportable within 24 hours. • Any spills in excess of five barrels (210 US gallons) are reportable within ten days. In addition, the following types of spills are reportable.. Spills that may cause an adverse effect to the environment. An adverse effect is defined as "impairment of or damage to the environment, human health, or safety or property." Specifically, it is considered the following: • Spill is confirmed to have moved off-lacation.(including vertical migration to water table); • Contaminants are present off -location at levels generally accepted to be problematic to soil, groundwater, livestock, and vegetation. This includes third party impact such as vegetation damage, and livestock impact; • Release is into surface water or a watercourse and moves off location; • Release or spill has potential for offsite odor complaints; and • Potential for toxic or flammable release to air going offsite. For assistance in determining if a release can be classified as an "adverse effect" or "potentially hazardous to the environment", contact EnCana's Parachute, Colorado Office Staff (See contact information provided in Section 2.1). 4.1.2. CHEMICAL AND REFINED HYDROCARBON SPILL Spills of production chemicals, fuels, lubricating oils as well as other refined hydrocarbons require reporting. Reporting of ANY AMOUNT of chemicals identified as toxic substances is required. Most of these compounds are associated with the downstream refining end of the petroleum industry, and are therefore not dealt with in detail in this report. EnCana Spill Plan Emergency Response May 2008 4 4.1.2.1 Release into Water A release of ANY AMOUNT of a chemical into surface water, a watercourse or groundwater that can cause an adverse effect on the environment must be immediately reported. Typically this means water found external to a containment berm. The regulations require reporting of any amount that can cause an adverse effect. This effectively means any chemical, fuel or lubricant used in construction; drilling, completion and production operations that are spilled into surface water must be reported. The regulatory authority then decides if any further action is required. 4.1.2.2 Releases onto the Ground A release of chemical or fuels onto the ground below the State of Colorado thresholds may still be reportable. Contact the EnCana's Parachute, Colorado Office staff for specific chemical releases. 4.1.3 CUMULATIVE RELEASES Cumulative releases involve the slow release of material over a sufficiently long time that the volumes eventually become significant and represent a potential risk to the environment. Cumulative releases that typically occur at our operations are associated with load outs, tank farms, pits, etc. and are relatively confined, therefore not causing a "significant environmental effect". Although the reporting of cumulative releases is required if they are causing a significant environmental effect, it should only be done in consultation with EnCana's Parachute, Colorado Office staff. 4.2 WHO IS TO REPORT? When an operator, maintenance person or other employee discovers a reportable spill, the area supervisor of EnCana's Parachute, Colorado Office staff must be notified immediately. The area supervisor must immediately contact EnCana's Parachute, Colorado Office staff, who will contact the appropriate government agency to report the spill (see Table 1 below).._ EnCana's.. employees and contractors are not to contact regulators unless directed to do so by their manager. 4.3 WHEN TO REPORT AND WHAT TO REPORT? A release should be reported to the appropriate government agency as soon as it is discovered or at the first available opportunity. The requirement for reporting is both verbal and written depending on the severity of the spill. Government authorities will advise if a written report is required at the time the verbal report is provided. Reporting personnel should make a point of inquiring about the need for a written report. The Table on page 10 outlines the specific information to be provided verbally and in written reports for spills of oil, condensate and produced water, as well as spills of chemicals and refined hydrocarbons. Verbal reports are provided as soon as possible, written reports are provided according to the schedule required by the government agency. EnCana Spill Plan Emergency Response May 2008 5 The proposed well sites are located in Garfield County, Colorado. In the Garfield County region, the Local Emergency Planning Commission (LEPC) is the County Sheriff's Office (Table 1). When notified of a spill, they may contact state and federal agencies, but be sure to confirm this, because procedures change regularly. Written reports will be compiled and submitted by EnCana. TABLE 1: GOVERNMENTAGENCYEMERGENCY CONTACT LIST FEDERAL AGENCIES National Response Center: http://www.nrc.uscg.mil/index.html EPA Region VIII: http://www.epa.gov/region8/ BLM Glenwood Springs Energy Office http://www.blm.gov/co/st/en/fo/gsfo.html BLM Grand Junction Field Office http://www.blm.gov/co/st/en/fo/gjfo.html BLM: White River Field Office http://www.co.blm.gov/wrra/index.htm STATE AGENCIES CO Oil & Gas Conservation Commission: http://oil-gas.state.co.us/ Colorado Department of Public Health and Environment (CDPHE)• http://www.cdphe.state.co.us/ Colorado Division of Oil & Public Safety: http://oil.cdle.state.co.us/ Glenwood Springs Division of Wildlife Grand Junction Division of Wildlife COUNTY AGENCIES Garfield County LEPC Jim Sears, Emergency Ops Commander (Sheriff's Office) Glenwood Springs, CO 81601 800-424-8802(24 Hour) 303-312-6312 303-293-1788 (Spill Line) 800-227-8914 (24 Hour) 970-947-2800 970-244-3000 970-878-3800 303-894-2100 1-888-235-1101 (Spill Line) 1-877-518-5608 (24 Hour) 303-318-8547 970-947-2920 970-255-6100 970-945-0453 (24 Hour) EnCana Spill Plan Emergency Response May 2008 6 5.0 INFORMATION TO REPORT 5.1 INITIAL VERBAL REPORT Verbal reports must be provided immediately, or as soon as practicable. Reports should include: Oil, Condensate and Produced Water • The location and time of the release; • The type and quantity of the material released; • The details of any action taken so far, and the actions proposed to be taken at the site; • A general description of the location of the release and of the immediate surrounding area; Chemicals and Refined Hydrocarbons • Date and time of the release, or the time period over which the release occurred if known; • The location of the release; • The duration, frequency and rate of release if known; • The type of chemical released and amount released, if known; • A discussion of spill containment and recovery procedures used; • A discussion of steps to be taken to prevent similar spills; • The status of the remediation program (remediated, under active remediation or to be remediated); • The remediation plan and schedule of implementation if required; and • Information regarding landowner notification. 5.2 FOLLOW-UP WRITTEN REPORTS Written reports will be provided according to the schedule required by government agency. Colorado requires the completion of Form 19: Oil, Condensate and Produced Water • Date and time of the release, or the time period over which the release occurred if known; • The location of the release; • The duration, frequency and rate of release if known; • The type of material released (produced water, etc.) including concentration of key components and amount released if known; • A discussion of spill containment and recovery procedures used; • A discussion of steps to be taken to prevent similar spills; • The status of the remediation program (remediated, under active remediation or to be remediated); • The remediation plan and schedule of implementation if required; and information regarding landowner notification EnCana Spill Plan Emergency Response May 2008 7 Chemical and Refined Hydrocarbons • A description of the circumstances leading up to the release; • A discussion of spill containment and recovery procedures used; • A discussion of steps to be taken to prevent similar future spills; and an outline of the proposed spill site reclamation program 5.3 VERBAL REPORTING PROCEDURES The following contacts must be made in the event of a reportable spill or other emergency. Refer to Table 1 for current phone numbers. Garfield County Sheriff's Department (County LEPC) The Dispatch operator will assess the need for service and will dispatch emergency Police, Ambulance, Fire and/or Hazardous Material Response as required. Construction, drilling, completion and production operations personnel will contact the Garfield County Sheriff's Department in the early stages of operation to advise them of the start of operation and to provide instructions to reach the operations site. The directions will be kept on file by the Dispatch operator and utilized if required. In the event of a spill the Garfield Sheriff's department is also the County LEPC. The LEPC Coordinator will access the situation and activate the County Hazmat response team as required. The Coordinator will also act as first contact advisor to initial clean-up efforts. The Coordinator may also contact additional regulatory agencies as required, but be sure to ask them and document the response. National Response Center (NRC) The NRC must be notified in the event of a produced water spill that could reach waters of the US. The NRC will notify the US Coast Guard. They will contact the region in which the spill occurs and a regional coordinator may be dispatched to the site depending on severity of the spill. Both the EnCana's supervisor and the Garfield County LEPC Coordinator must contact the NRC. Environmental Protection Agency (EPA) The NRC should notify the EPA regarding a spill. However, contact the EPA Region 8 Spill Line (Table 1) just to be sure. Colorado Oil & Gas Conservation Commission This division must be contacted in the event of any spill (regardless of size). This is the state emergency response commission. A representative will be sent to the site if required. EnCana Spill Plan Emergency Response May 2008 8 Bureau of Land Management (BLM): Initial contact with BLM should be to the Glenwood Springs Energy Office, Grand Junction Field Office & White River field Office (Table 1). They will then activate the BLM spill response plan. EnCana Oil & Gas (USA), Inc. The EnCana Parachute, Colorado Office staff will activate EnCana's spill response personnelif required and dispatch an environmental/spill specialist to site if the spill severity requires it. The Division Manager will dispatch the Area Production Supervisor to the site to manage spill containment and clean up operations if needed. The Area Production Supervisor will communicate with the Garfield County Sheriff's Department, the appropriate surface use agency (Bureau of Land Management, Colorado Division of Wildlife). to. facilitate and manage.. the overall clean-up operation and ensure to that all government requirements are fulfilled. EnCana Oil & Gas (USA), Inc. - Parachute, Colorado Office: The EnCana Parachute, Colorado Office staff will provide spill clean up guidance and will prepare detailed spill reports for the regulatory agencies. Environmental spill specialists will coordinate with the Garfield County LEPC Coordinator to ensure that all government regulations and requirements are met. Environmental spill specialists will work with and advise the onsite Production Supervisor regarding remediation measures required. Spill specialists will coordinate all post clean up sampling activity and reporting. EnCana Spill Plan Emergency Response May 2008 9 6.0 GENERAL SPILL RESPONSE PLAN 6.1 INITIAL COMMUNICATION AND ACTION PROCEDURES Internal spill reporting procedures require completion of an EnCana's incident/accident report as well as a spill assessment form. Information contained on this form assists operators in providing verbal reports to government authorities. The spill assessment form also helps to characterize the spill sufficiently that appropriate response procedures can be initiated. The assessment form covers spills from all facilities associated with the upstream oil and gas sector including pipelines; however the form will be completed for reportable spills only. The form is to be completed by operators at the time the spill is discovered. It is maintained with the operator's files with a copy forwarded to EnCana. The assessment form is not submitted to any government agencies. A copy of the assessment form is contained on the following page. It is important to document all phases of a spill. If an assessment form is not available, document all information (date, time of actions, phone numbers called, contact names, etc.) on available paper and transfer it to a proper form at a later date. The most critical aspects of spill response are accurately locating the spill, isolating or shutting in the source of the spill, if possible, and containing and recovering surface fluids. All of these activities must be undertaken with due consideration for the safety of the operator, clean-up crews and the general public. Reporting of the spill should take place once initial activities to contain and recover the spill are underway. Reports should be submitted to the appropriate government agencies, as well as to EnCana. The spill assessment form as well as an incident accident report form must be completed and retained in company files. EnCana Spill Plan Emergency Response May 2008 10 SPILL ASSESSMENT FORM FOR NOTIFICATION PURPOSES 1. Date 2. Date & Time of discovery or occurrence am. pm. 3. Person who discovered spill 4. Telephone number of person who discovered spill. 5. Location of spill (detailed) 1/4 1/4 Sec. T R County State 6. Type of material spilled: Oil Saltwater Oil & Saltwater Toxic Fluid, _ Other (Specify) 7. Source of spill (Check one): Pipeline Failure Tank Overflow Treater Upset Tank Rupture Other _ Unknown 8. Quantity of material spilled _ bbls. Unknown 9. Is the spill source stopped? _ Yes _ No. If not, what remaining maximum quantity could be spilled? Bbls. 10. Present weather conditions. 11. Forecasted weather conditions: 24 hrs. 48 hrs. 72 hrs. 12. Actions underway to stop/control the spill. EnCana Spill Plan Emergency Response May 2008 6.2 SUPERVISOR'S RESPONSIBILITIES EnCana's Parachute, Colorado Office Staff can provide advice and assistance with respect to operator responsibilities as required. Operator is responsible for the following items: • Assessing the location and source of the spill and determining if the spill can be contained; • Assessing the hazards associated with responding to a spill; • Determining the extent/impact of the spill; • Contacting and dispatching clean-up crews; • Controlling access to the spill site; • Coordinating the containment and recovery of surface fluids; • Notifying company and regulatory agencies; • Completion of spill assessment form, and incident/accident report form; • Ensuring topsoil is salvaged and segregated; and • Scheduling clean-up and repairs. 6.3 "FIRST RESPONSE" COMPANIES First response companies will provide assistance with initial containment and recovery of product. Operators should be aware of local "first response" companies that they can call on to assist in initial containment of the spill. Operators should ensure that a listing of First Response companies is compiled and appended to this document. This list should also be posted in common areas at batteries and other facility sites. Operators should ensure that this list is periodically updated so that only those companies that are current appear on the list. Willow Creek Companies Russell Fowles P. O. Box 55174 Grand Junction, CO 81505 970-256-7003 — Office 970-778-5554 - Cell Backhoe/Dirt Work/Emergency Response. Rockies Construction 970-319-3167 — Bill Hoke (Parachute) 970-769-5035 — Duane Higgins 505-334-1976 — New Mexico Office Vacuum Truck Badger Daylighting 970-309-7342 — Kent Powel (Rifle) 1-877-3BADGER — USA Office Vacuum Truck EnCana Spill Plan Emergency Response May 2008 12 7.0 SPILL MANAGEMENT 7.1 SMALL VERSUS LARGE SPILLS Many spills occur that are typically very small and located within the pad area. For smaller spills, the technique for spill clean-up is basically shoveling the material into a drum, labeling the drum, and disposing of it along with other oil field waste materials as per routine disposal methods to a landfill. Generally, Class I landfills accept this type of waste, however if the material is contained within drums, Class II landfills may also accept them. Other methods of manual recovery include using cans, buckets or rakes to pick-up contaminated soils on the surface. The important point to consider when remediating small spills is to ensure that ALL of the affected soils have been removed or otherwise dealt with and all actions to clean-up, repair the problem, and prevent further occurrence are well-documented. This is most easily accomplished if the spill is dealt with immediately, thereby not allowing the spill to soak into the ground. The following illustrates the decision matrix for spill clean-up. Spill greater than 2yd3 or larger than what can easily be cleaned up with a shovel? 7.2 REMEDIATION FOR LARGE SPILLS The information contained within this section is meant to provide guidance on initial containment, recovery and treatment measures to be applied to spills, which are "manageable" with the equipment and expertise available to the majority of EnCana's operations supervisors. This section is not meant for larger, uncontrolled spills that will require specialized equipment and expertise. EnCana Spill Plan Emergency Response 13 May 2008 Spills will require initial containment and treatment so as to minimize spill clean up and site restoration work, and the potential for environmental and public health risks. This section provides information on initial treatment to stabilize the spill and prevent the worst effects from settling in before the site can be sampled and more specific treatments applied. Contact EnCana's Parachute, Colorado Office staff for any additional advice or assistance that may be required. See contact information provided in Section 2.1. 7.2.1 SPILL CONTAINMENT Containment measures may be broadly categorized into two groups: land based and water based. The options for containment make use of a wide range of locally available materials such as straw, chicken wire, and snow fencing as well as commercial sorbents and booms. 7.2.1.1 Land Containment Methods It is important to note that land spills are generally much easier to deal with than spills that have reached a waterway. Effortsshould be madeto prevent or stop spilled product from entering the water. Land containment of spills can be achieved by using minor earthworks such as trenches and earth dams or dykes. In the winter, snow can be used for a similar purpose. Snow is also a suitable sorbent material for spills other than salt spills. Salt will melt the snow and result in further spread of salt contamination. Trenches Trenches can be used to intercept and hold all types of fluids; however trench construction is practical only in the summer. Figures 6.1 and 6.2 (Appendix A) provide details of an interceptor trench and methods of using trenches to intercept overland and subsurface flow. Trench construction should include the use of a plastic liner. This prevents downward migration into subsurface soils and potentially groundwater. Relatively shallow trenches may be strategically placed down slope of a spill to intercept surface and subsurface spilled materials. This method is effective in preventing subsurface contamination of water and eventual discharge to streams and other water bodies. Equipment required to build a trench includes: • Backhoe, loader, bulldozer; • Shovels, picks; and • Plastic liners. EnCana Spill Plan Emergency Response May 2008 14 Dams and Dykes Earth and snow dams may be constructed across ditches or low areas to contain a spill and stop its flow. The entire flow of the spilled material and any surface drainage may be contained. Construction materials include earth, wood, sandbags, and snow. The dam or dyke should be lined with plastic sheeting to make it impermeable to the spilled product. In the winter, water may be sprayed on the snow dams or dykes to create ice. Dams should be of sufficient size to contain the entire spill volume; insufficient capacity may result4n overtopping and/or failure... 7.2.1.2 Containment on Waterways Water containment measures generally include the use of booms or barriers. However, dams and weirs may also be used for ditches with flowing water and for smaller streams. Figure 6.3 illustrates the use of dams and weirs. These methods are typically used where it is necessary to allow the water to flow, while retaining lighter than water liquids such as petroleum products that separate readily from water. Water bypass or underflow dams may also be constructed on small, slow -flowing streams. Water bypass involves first constructing an earthen dyke to stop the flow of water, and then inserting a pipe below the level of the spilled material and discharging the water on the other side of the dyke. (Figure 6.4). It is important to note that the discharge end of the pipe should not be inclined above the level of the dyke or overtopping and failure will result. Weirs made from plywood, lumber and sheet metal may also be used in ditches with flowing water and may be placed to completely or partially block culvert openings. These barriers may be suspended from stakes on either side of the culvert openings and raised or lowered to maintain the desired water level while retaining the oil. Recovery of material collected behind dams and weirs may be made with the use of sorbents, skimmers or by direct suction. Other water containment measures include the use of booms or barriers. These methods are typically limited to the containment and recovery of materials that will readily separate from and float on water. The type and size of a boom will depend on the specific location and the conditions within which the boom will be used. The general principles for using a boom are: • To contain a spill of floating liquid or debris; • To deflect or divert material to a defined area so that it may be recovered; and • To protect sensitive areas from contamination. EnCana Spill Plan Emergency Response May 2008 15 There are many common items that can be used as improvised booms. These include: • Railroad ties; • Telephone or power poles; • Trees; • Lumber; • Inflated fire hose; • Styrofoam; • Chicken wire or fishing net and sorbent materials (rolled into a sausage shape). It is important that buoyant material be used within the boom; otherwise it will become water logged and sink after several hours. Rope or wire can be used to hold the boom sections in. place. Natural sorbents include straw and evergreen boughs. Commercial sorbents have greater capacity to absorb oil and other petroleum products; they last longer, and can be reused. Foam sections have good sorbent capacity and excellent buoyancy. Figures 6.5 and 6.6 illustrate methods of connecting booms together and construction of a "jellyroll" or "sausage roil" using improvised sorbent barriers. Proper boom deployment is a critical consideration. The angle of the boom relative to the flow direction must be related to water flow velocity in order to achieve effective containment (Figure 6.7). Several booms arranged in parallel may be necessary to contain the entire product. These should be spaced to allow for particles, which may escape the first boom, float to the surface, and be contained by the next boom. In addition, the use of several booms permits the removal of a boom for cleaning. Figures 6.7 to 6.9 illustrate boom deployment methods. The chart at the bottom of Figure 6.7 illustrates the proper angle to deploy the boom based on water velocity. The higher the stream velocity, the more perpendicular the boom will be with respect to the crossing. In the example shown in the illustration, proper bloom deployment is at an angle of 24° for a stream flow velocity of 175 feet/minute. Fixed barriers can be used in streams with soft beds where stakes can be driven. A snow fence- barrier encebarrier may be installed to span the width of a stream less than 1 m deep and may be anchored at both ends with steel or wooden stakes. Stakes are driven into the stream bottom at 3 to 6 foot intervals. Straw bales or commercial sorbents are placed on the upstream side. The barrier should be angled against the current for collection of product along the shore. Multiple snow fence barriers can be used to provide backup against potential losses from upstream barriers. Net or chicken wire barriers can be constructed for the same purpose. Figure 6.10 illustrates a typical snow fence barrier. 7.2.2 RECOVERY Recovery efforts must be undertaken as soon as it is practical and safe to do so. Focus on rapid recovery of spilled materials is required to reduce and/or eliminate any potential dangers or hazards to the environment. Recovery methods generally include suction, mechanical removal and use of sorbent materials. EnCana Spill Plan Emergency Response May 2008 16 Suction Direct suction includes the use of vacuum trucks or portable pumps. Large capacity wet service shop vacs may also be used if there is an available power source nearby. Suction screens may be required to prevent hose plugging by -floating debris and to prevent pump damage. Care should be taken to reduce the uptake of water in order to minimize the amount of material, which requires disposal, and prevent mixing of oil and water. Manual and Mechanical Recovery Manual and mechanical recovery, discussed previously, is an effective option for the removal of small spills. Manual recovery using hand tools (shovels, buckets, rakes, cans) is also effective in removing spills from areas that are inaccessible to•larger equipment. Though labor intensiveand time consuming, manual recovery is often the only method of recovery available and in some cases is the preferred method as it causes the least amount of damage to an area. Mechanical recovery using heavy equipment is an option typically reserved for larger spills. Details with respect to the use of heavy equipment are provided in local area emergency response plans. Use of Sorbent Material Sorbents are materials that soak up oil or other product. They are commonly used for final clean up and recovery of small amounts of product or to remove product in places that are inaccessible by other means of recovery. They are effective in recovering thin as well as thick layers of product; however large volumes of sorbent material may be required for thick deposits. 7.2.3 INITIAL TREATMENT Initial treatments are designed to prevent the worst effects of a spill from "settling in" before the site can be sampled and more specific treatments completed. The purpose of initial treatment is to "buy time" to allow for more extensive sampling and analytical programs to be completed and to optimize treatment programs. Initial treatments are especially important on salt spills, as these initial remediation measures will greatly assist in deterring or slowing the soil "salinization" process. These treatments should proceed within 24 to 48 hours of the spill, before the spill dries out or receives much rain. If there has been considerable rain resulting in soft soils, chemicals may have to be hand broadcast or sprayed from offsite to prevent vehicles from rutting the soil 7.2.3.1 Soils Handling Soil handling must be minimized to the extent possible during wet soil conditions. Typically if there is a potential to create ruts that are greater than 3 inches deep, equipment should be kept off the soils and the spill should be accessed. on foot and manually dealt with as explained in Section 7.2.2. However, under an emergency situation this may not always be feasible and it may be necessary to strip the topsoil ahead of the machinery when accessing the site to prevent compaction and destruction of the soil structure. In particular, soils must be handled carefully during excavations. The following measures should be taken when excavating soils: EnCana Spill Plan Emergency Response May 2008 17 • Strip the topsoil away from the area where you intend to excavate. Stockpile the topsoil away from the area where you plan to stockpile the spoil materials to avoid mixing the two together. When it is time to fill the hole, fill it first with the spoil materials, leaving a low "roach" or mound to account for settling. Respread the -topsoil evenly on top of the mound being sure to completely cover the excavated area. It is particularly important during winter excavations to not replace the topsoil until the spoil pile has settled; and • If the topsoil was contaminated during the spill, treat the topsoil according to the specifications listed below for brine and hydrocarbon spills. 7.2.3.2 Brine Spills For the purposes of this document, brine is defined as: • Water with over 10 000 mg/1 (ppm) of total dissolved solids (TDS); OR • Emulsions containing over 20% brine (emulsions with less than 20% brine can be treated as a hydrocarbon spill since the oil component will be sufficiently high that it is treatable as such); OR • Previous spills have caused "bare spots" on the_ground wherevegetationeither does not grow, grows slowly, or is characterized by plants that appear different from the surrounding area. Information on the composition and general chemistry of fluids characterizing the field areas may be obtained from fluid sample analysis reports (CORE labs etc.), and should be reviewed by operators to determine the potential for a spill to result in impacts to soils or vegetation and the need to initiate immediate response. Initial treatment for brine spills typically involves the addition of a calcium product to be applied and incorporated into the soil within the first 24 to 48 hours of clean up prior to flushing with fresh water. Operators should be aware of product suppliers in their areas, and have a listing posted or readily available at facilities. Accepted treatment chemicals include gypsum (calcium sulphate) and various formulations of calcium nitrate (liquid or granular fertilizer 15.5-0-0; Saline Soil Saver (SSS); and LCA -II). Generally calcium nitrates are preferred because of better solubility, but are prone to surface washes and may contaminate nearby water sources. Conversely, gypsum's low solubility.characteristic&make it unsuitable for most sites except wet areas. Other chemicals that have been used successfully on brine spills include calcium chloride (CaCl2 ), and magnesium sulphate (MgSO4 ). The following options are provided for initial remediation of brine -contaminated soils. EnCana Spill Plan Emergency Response May 2008 18 Option 1: Site Conditions: Ground is not frozen, and can be cultivated or soaked with water to incorporate the fertilizer. There are no water sources (shallow wells, sloughs, dugouts, ponds) near the spill site, and soils are average in terms of moisture levels (mesic sites). Note: Calcium nitrate should never be used in situations where site run-off could cause it to contaminate sources of drinking water for human, livestock, or wildlife consumption. Application: 2.2 lbs. calcium nitrate per 10 yards2. Procedure: Spread the fertilizer on the spill site (by hand if the soils are wet). Cultivate or water the soil well so that the fertilizer is incorporated. Soak the soil until puddles form. Let puddles soak in, and then soak the soil some more. Soak the soil as often as possible over the next few days. Calcium nitrate/polymer/flocculant formulations may also be used and are preferred when the ground is not frozen or over saturated so that the treatment soaks in immediately. These formulations are commercially available under the trade names Saline Soil Saver (SSS) and LCA -II. Application: Dilute 0.8 US gallons of SSS or 0.5 US gallons of LCA -II with 6.2 US gallons of fresh water and apply 500 US and apply to 10 square yards. Be sure to protect the concentrate from freezing. Option 2: Site Conditions: The ground is frozen and there will likely be runoff in the spring; OR the site is near water, thereby precluding the use of calcium nitrate. Application: 11 lbs. gypsum per 10 yards2. Procedure: Spread the granular gypsum on site (by handif soilsare wet). If the ground is not frozen, and cultivation of the soils is possible (the affected site is not a bog or muskeg) cultivate as soon as soils are dry enough to permit cultivation, then soak the soil until puddles form. Only soak the site once immediately prior to incorporation as the chloride salinity will aid in increasing the solubility of the gypsum. 7.2.3.3 Hydrocarbon Spills Soil contaminated by hydrocarbons must be removed from the spill site and removed to an approved landfill. EnCana Spill Plan Emergency Response May 2008 19 Appendix A Figures EnCana Spill Plan Emergency Response May 2008 20 rur•1r.1 7 h: I:.il :f'nlru of>cur frtnch EnCana Spill Plan Emergency Response May 2008 21 1 i,;ure 1), Z (4i1Y I s Uu rt 11hwe lnl`tl!NittsfItr:G'1'I' II}N EnCana Spill Plan Emergency Response May 2008 22 I14‘1fr earth Dan) IfV•Ar.... EnCana Spill Plan Emergency Response May 2008 23 1'icun: 6.4 Water eSru:a.:: l_ q:Srnt(nnI Du in EnCana Spill Plan Emergency Response May 2008 24 fI rtpsE'. P:1:V.C.,4•-t4t• F .1' LC:C.'t leo re 6.5 \ I r.ats 11f 6110 rct1112 .1•S'ilt 01: Sic?rifoani himuos EnCana Spill Plan Emergency Response 25 May 2008 CraTIA R, Figure 6•n .Iel1ytnll Anil S;U?AQU atoll Innun•drea Stich eat 15rrricrz EnCana Spill Plan Emergency Response May 2008 26 1.44p#e6.7 1 ‘1 OP./ ,3ef1'4 EnCana Spill Plan Emergency Response May 2008 27 // (44.41A 54.4C4 2 4 4.44.4..1 Hviire*.# t nali.11 mni, EnCana Spill Plan Emergency Response May 2008 28 mire ip.il si b4: %.1.e me%fo: !i.n+ni t tiacItfnent :uu pL:n iucr.t EnCana Spill Plan Emergency Response 29 May 2008 licir uL }-rrf ..6P,z1717;74'IFS i-:..5" a SP;TF • .S ,V.r% • iewe rl.1J SnowfeiitO:uteI A arbclit 1i;utkt EnCana Spill Plan Emergency Response May 2008 30