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Home My WebLink About20160918.tiff CDPHE COLORADO Ark CL Co .0 Department of Public Health Es Environment Dedicated to protecting and improving the health and environment of the people of Colorado Weld County - Clerk to the Board 1150 0 St RECEIVED PO Box 758 Greeley, CO 80632 MAR 1 4 2016 March 10, 2016 WELD COUNTY COMMISSIONERS Dear Sir or Madam: On March 16, 2016, the Air Pollution Control Division will begin a 30-day public notice period for Bill Barrett Corporation - 19141_Anschutz State 5-62-35_36 NWNW Pad. A copy of this public notice and the public comment packet are enclosed. Thank you for assisting the Division by posting a copy of this public comment packet in your office. Public copies of these documents are required by Colorado Air Quality Control Commission regulations. The packet must be available for public inspection for a period of thirty (30) days from the beginning of the public notice period. Please send any comment regarding this public notice to the address below. Colorado Dept. of Public Health Et Environment APCD-SS-B1 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 Attention: Clara Gonzales Regards, C Clara Gonzales Public Notice Coordinator Stationary Sources Program Air Pollution Control Division Enclosure • /t2-1 i(9-10I tO CC7(, ' & 3/141 2016-0918 4300 Cherry Creek Drive S., Denver,CO 80246-1530 P 303-692-2000 www.colorado.gov/cdphe (��F 1 John W. Hickenlooper, Governor I Larry Wolk,MD,MSPH, Executive Director and Chief Medical Officer L ,,,, ta7-6 L CDPHE Air Pollution Control Division CO 1 Notice of a Proposed Project or Activity Warranting Public Comment Website Title: Bill Barrett Corporation - 19141_Anschutz State 5-62-35_36 NWNW Pad - Weld County Notice Period Begins: March 16, 2016 Notice is hereby given that an application for a proposed project or activity has been submitted to the Colorado Air Pollution Control Division for the following source of air pollution: Applicant: Bill Barrett Corporation Facility: 19141_Anschutz State 5-62-35_36 NWNW Pad Oil and gas exploration and production site NWNW Sec 35 T5N R62W Weld County The proposed project or activity is as follows: Multiple well facility with four (4) high-pressure gas separators, one (1) heater treater, and one (1) vapor recovery tower (VRT). Flash emissions are captured with three (3) vapor recovery units (VRUs). Flash emissions are routed to enclosed flares during VRU downtime. Condensate is stored in tanks onsite. One (1) open flare controls the high-pressure separators in the event of sales pipeline downtime. This permit covers the backup gas flare, enclosed flares controlling separator/VRT emissions during VRU downtime, and condensate loadout. The Division has determined that this permitting action is subject to public comment per Colorado Regulation No. 3, Part B, Section III.C due to the following reason(s): • permitted emissions exceed public notice threshold values in Regulation No. 3, Part B, Section III.C.1.a (25 tpy in a non-attainment area and/or 50 tpy in an attainment area) • the source is requesting a federally enforceable limit on the potential to emit in order to avoid other requirements approvalof the application. The Division has made a preliminary determination of app o pp A copy of the application, the Division's analysis, and a draft of Construction Permit 15WE1301 have been filed with the Weld County Clerk's office. A copy of the draft permit and the Division's analysis are available on the Division's website at https://www.colorado.gov/pacific/cdphe/air-permit-public-notices The Division hereby solicits submission of public comment from any interested person concerning the ability of the proposed project or activity to comply with the applicable standards and regulations of the Commission. The Division will receive and consider written public comments for thirty calendar days after the date of this Notice. Any such comment must be submitted in writing to the following addressee: Betsy Gillard Colorado Department of Public Health and Environment 4300 Cherry Creek Drive South, APCD-SS-B1 Denver, Colorado 80246-1530 cdphe.commentsapcd@state.co.us 1 I A..... caLoeaco .. � . iiaaiSh k Pn STATE OF COLOPADO of cot •LO- : •• D -T` •F P = C HEALTH AND ENVIRONMENT AIR POLLUTION CONTROL DIVISION TELEPHONE: (303)692-3150 *1816' CONSTRUCTION PERMIT PERMIT NO: 15WE1301 Issuance 1 DATE ISSUED: ISSUED TO: Bill Barrett Corporation THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS: Oil and gas exploration and production facility known as the 19141_Anschutz State 5- 62-3536 NWNW Pad, located in the NWNW Section 35 T5N R62W, Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Equipment Point Description ID Backup One open flare controlling four(4) 3-phase high pressure gas Gas Flare 002 separators during sales pipeline downtime. Flare has a minimum control efficiency of 95%. Cond. LO 003 Condensate loadout to tanker trucks by submerged fill. Emissions are not controlled. One (1) heater-treater and one (1)vapor recovery tower(VRT) VRU controlled by four(4) enclosed combustors during VRU downtime. Bypass 004 Condensate o throughput during VRU downtime is estimated to be 18% of total throughput. Flare has a minimum control efficiency of 95%. THIS PERMIT IS GRANTED SUBJECT TO ALL RULES AND REGULATIONS OF THE COLORADO AIR QUALITY CONTROL COMMISSION AND THE COLORADO AIR POLLUTION PREVENTION AND CONTROL ACT C.R.S. (25-7-101 et seq), TO THOSE GENERAL TERMS AND CONDITIONS INCLUDED IN THIS DOCUMENT AND THE FOLLOWING SPECIFIC TERMS AND CONDITIONS: REQUIREMENTS TO SELF-CERTIFY FOR FINAL AUTHORIZATION 1. Within one hundred and eighty days (180) after commencement of operation or issuance of this permit, whichever comes later, compliance with the conditions contained in this permit shall be demonstrated to the Division. It is the owner or operator's responsibility to self-certify compliance with the conditions. Failure to demonstrate compliance within 180 days may result in revocation of the permit. (Reference: Regulation No. 3, Part B, III.G.2). AIRS ID: 123/9E22 Page 1 of 10 epa en Ii ealth and Environment it Pollution Control Division•2. Point°002: WDolor h 0) a ' suance of this permit, the operator shall install a flow meter to monitor and record volumetric flow rate of natural gas vented to the open flare during sales pipeline downtime. The operator shall use the gas flow rate listed in the application for actual flow rate until the flow meter is installed, not to exceed one hundred and eighty(180)days after issuance of this permit. 3. This permit shall expire if the owner or operator of the source for which this permit was issued: (i) does not commence construction/modification or operation of this source 4 t within 18 months after either, the date of issuance of this construction permit or the date on which such construction or activity was scheduled to commence as set forth in the permit application associated with this permit; (ii).discontinues construction for a period of eighteen months or more; (iii) does not complete construction within a reasonable time of the estimated completion date. The Division may grant extensions of the deadline per Regulation No. 3, Part B, III.F.4.b. (Reference: Regulation No. 3, Part B, III.F.4.) 4. The operator shall complete all initial compliance testing and sampling as required in this permit and submit the results to the Division as part of the self-certification process. (Reference: Regulation No. 3, Part B, Section III.E.) 5. The operator shall retain the permit final authorization letter issued by the Division, after completion of self-certification, with the most current construction permit. This construction permit alone does not provide final authority for the operation of this source. EMISSION LIMITATIONS AND RECORDS 6. Emissions of air pollutants shall not exceed the following limitations (as calculated in the Division's preliminary analysis). (Reference: Regulation No. 3, Part B, Section II.A.4) Annual Limits: Facility AIRS Tons per Year Equipment ID Point NOX VOC CO Emission Type Backup Gas Flare 002 — 6.7 2.8 Point Cond. LO 003 — 23.5 — Point VRU Bypass 004 — 30.2 3.2 Point See 'Notes to Permit Holder for information on emission factors and methods used to calculate limits. Facility-wide emissions of each individual hazardous air pollutant shall be less than 8.0 tpy. Facility-wide emissions of total hazardous air pollutants shall be less than 20.0 tpy. Compliance with the annual limits shall be determined by recording the facility's annual criteria pollutant emissions, (including all HAPs above the de-minimis reporting level) from each emission unit, on a rolling twelve (12) month total. By the end of each month a new twelve-month total shall be calculated based on the previous twelve months' data. The permit holder shall calculate emissions each month and keep a compliance record on site or at a local field office with site responsibility, for Division review. This rolling twelve-month total shall apply to all permitted emission units, requiring an APEN, at this facility. AIRS ID: 123/9E22 Page 2 of 10 II olor Depa en P •li Health and Environment 'it Pollution Control Division 7. The emission;- th- e _ sh. - - -F ated aintained with the control equipment as listed in order to reduce emissions to less than or equal to the limits established in this permit(Reference: Regulation No.3, Part B, Section III.E.) Facility AIRS Pollutants Equipment Point Control Device Controlled ID Backup 002 One(1) Open Flare VOC, HAPs Gas Flare VRU 004 Four(4) Enclosed Combustors VOC, HAPs Bypass PROCESS LIMITATIONS AND RECORDS 8. This source shall be limited to the following maximum processing rates as listed below. Monthly records of the actual processing rates shall be maintained by the owner or operator and made available to the Division for inspection upon request. (Reference: Regulation 3, Part B, II.A.4) Process/Consumption Limits Facility AIRS Equipment Point Process Parameter Annual Limit ID Backup Gas vented to open flare during sales 002 10.0 MMscf Gas Flare pipeline downtime Cond. 003 Condensate Loaded 325,522 bbl LO VRU 004 Condensate throughput during VRU bypass 58,594 bbl Bypass Compliance with the annual throughput limits shall be determined on a rolling twelve (12) month total. By the end of each month a new twelve-month total is calculated based on the previous twelve months' data. The permit holder shall calculate throughput each month and keep a compliance record on site or at a local field office with site responsibility, for Division review. 9. Point 002: The owner or operator shall continuously monitor and record the volumetric flow rate of natural gas vented to the open flare during sales pipeline downtime using a flow meter. The flow meter shall continuously measure flow rate and record total volumetric flow vented from the separators to the open flare during sales pipeline downtime. The owner or operator shall use monthly throughput records to demonstrate compliance with the process limits specified in Condition 8 and to calculate emissions as described in this permit. STATE AND FEDERAL REGULATORY REQUIREMENTS 10. Points 002, 004: The permit number and AIRS ID point number (e.g. 123/4567/890) shall be marked on the subject equipment for ease of identification. (Reference: Regulation Number 3, Part B, III.E.) (State only enforceable) 11. Visible emissions shall not exceed twenty percent(20%) opacity during normal operation of the source. During periods of startup, process modification, or adjustment of control AIRS ID: 123/9E22 Page 3 of 10 epa en li ealth and Environment it Pollution Control Division equipment vi Dolor i h x opaci more than six minutes in any sixty consecutive minutes. Emission control devices subject to Regulation 7, Sections XII.C.1.d or XVII.B.2.b shall have no visible emissions. (Reference: Regulation No. 1, Section II.A.1. &4.) 12. This source is subject to the odor requirements of Regulation No. 2. (State only enforceable) 13. Point 002: The open flare covered by this permit has been approved as an alternative emissions control device under Regulation Number 7, Section XVII.B.2.e. The open flare must have no visible emissions during normal operations and be designed so that an observer can, by means of visual observation from the outside of the open flare, or by other convenient means approved by the Division, determine whether it is operating properly. This open flare must be equipped with an operational auto-igniter upon installation of the combustion device. 14. Points 002 & 004: All separation equipment, including low-pressure separators and VRTs, covered by this permit is subject to Regulation 7, Section XVII.G. (State Only). On or after August 1, 2014, gas coming off a separator, produced during normal operation from any newly constructed, hydraulically fractured, or recompleted oil and gas well, must either be routed to a gas gathering line or controlled from the date of first production by air pollution control equipment that achieves an average hydrocarbon control efficiency of 95%. If a combustion device is used, it must have a design destruction efficiency of at least 98%for hydrocarbons. 15. Point 003: This source is located in an ozone non-attainment or attainment-maintenance area and is subject to the Reasonably Available Control Technology (RACT) requirements of Regulation Number 3, Part B, III.D.2.a. Condensate loading to truck tanks shall be conducted by submerged fill.(Reference: Regulation 3, Part B, III.E) 16. Point 003: The owner or operator shall follow loading procedures that minimize the leakage of VOCs to the atmosphere including, but not limited to (Reference: Regulation 3, Part B, III.E): a. Hoses, couplings, and valves shall be maintained to prevent dripping, leaking, or other liquid or vapor loss during loading and unloading. b. All compartment hatches (including thief hatches) shall be closed and latched at all times when loading operations are not active, except for periods of maintenance, gauging, or safety of personnel and equipment. c. The owner or operator shall inspect loading equipment and operations on site at the time of the inspection to ensure compliance with the conditions (a) and (b) above. The inspections shall occur at least monthly. Each inspection shall be documented in a log available to the Division on request. 17. Point 003: All hydrocarbon liquid loading operations, regardless of size, shall be designed, operated and maintained so as to minimize leakage of volatile organic compounds to the atmosphere to the maximum extent practicable. 18. Point 004: The enclosed combustors covered by this permit are subject to Regulation No. 7, Section XVII.B General Provisions (State only enforceable). These requirements include, but are not limited to: AIRS ID: 123/9E22 Page 4 of 10 olor Depa en . P .li Health and Environment i s2 � it Pollution Control Divi s on • XVII.B • - co ,_ti.� - 'F e contr ° issions of volatile organic compounds to comply with Section XVII, it shall be enclosed, have no visible emissions during normal operations, and be designed so that an observer can, by means of visual observation from the outside of the enclosed combustion device, or by other means approved by the Division, determine whether it is operating properly. • XVII.B.2.d Auto-igniters: All combustion devices installed on or after May 1, 2014 used to control emissions of hydrocarbons must be equipped with and operate an auto-igniter upon installation of the combustion device. OPERATING & MAINTENANCE REQUIREMENTS 19. Points 002 & 004: Upon startup of these points, the owner or operator shall follow the most recent operating and maintenance (O&M) plan and record keeping format approved by the Division, in order to demonstrate compliance on an ongoing basis with the requirements of this permit. Revisions to your O&M plan are subject to Division approval prior to implementation. (Reference: Regulation No. 3, Part B, Section III.G.7.) 20. Point 004: Within 180 days after issuance of this permit, the owner or operator shall continuously monitor and record VRU downtime while emissions are routed to the backup Enclosed Control Devices using a SCADA (supervisor)/ control and data acquisition) system. The owner or operator shall use monthly VRU downtime records, monthly condensate throughput records and calculation methods detailed in the O&M Plan to demonstrate compliance with the process and emissions limits specified in this permit. COMPLIANCE TESTING AND SAMPLING Initial Testing Requirements 21. Points 002 & 004: The owner or operator shall demonstrate compliance with opacity standards, using EPA Method 22 to measure opacity from the flare. (Reference: Regulation No. 7, Section XVII.B.2) ADDITIONAL REQUIREMENTS 22. A revised Air Pollutant Emission Notice (APEN) shall be filed: (Reference: Regulation No. 3, Part A, II.C) a. Annually by April 30th whenever a significant increase in emissions occurs as follows: For any criteria pollutant: For sources emitting less than 100 tons per year, a change in actual emissions of five (5) tons per year or more, above the level reported on the last APEN; or For volatile organic compounds (VOC) and nitrogen oxides sources (NOx) in ozone nonattainment areas emitting less than 100 tons of VOC or NOx per year, a change in annual actual emissions of one (1) ton per year or more or five percent, whichever is greater, above the level reported on the last APEN; or For sources emitting 100 tons per year or more, a change in actual emissions of five percent or 50 tons per year or more, whichever is less, above the level reported on the last APEN submitted; or AIRS ID: 123/9E22 Page 5 of 10 olor epa en li ealth and Environment it Pollution Control Division Fora it If the emissions increase by 50% or five (5) tons per year, whichever is less, above the level reported on the last APEN submitted to the Division. b. Whenever there is a change in the owner or operator of any facility, process, or activity; or c. Whenever new control equipment is installed, or whenever a different type of control equipment replaces an existing type of control equipment; or d. Whenever a permit limitation must be modified; or e. No later than 30 days before the existing APEN expires. 23. Federal regulatory program requirements (i.e. PSD, NANSR or Title V Operating Permit) shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit condition. Any relaxation that increases the potential to emit above the applicable Federal program threshold will require a full review of the source as though construction had not yet commenced on the source. The source shall not exceed the Federal program threshold until a permit is granted. (Regulation No. 3 Part D). GENERAL TERMS AND CONDITIONS 24. This permit and any attachments must be retained and made available for inspection upon request. The permit may be reissued to a new owner by the APCD as provided in AQCC Regulation No. 3, Part B, Section II.B upon a request for transfer of ownership and the submittal of a revised APEN and the required fee. 25. If this permit specifically states that final authorization has been granted, then the remainder of this condition is not applicable. Otherwise, the issuance of this construction permit does not provide "final" authority for this activity or operation of this source. Final authorization of the permit must be secured from the APCD in writing in accordance with the provisions of 25-7-114.5(12)(a) C.R.S. and AQCC Regulation No. 3, Part B, Section III.G. Final authorization cannot be granted until the operation or activity commences and has been verified by the APCD as conforming in all respects with the conditions of the permit. Once self-certification of all points has been reviewed and approved by the Division, it will provide written documentation of such final authorization. Details for obtaining final authorization to operate are located in the Requirements to Self- Certify for Final Authorization section of this permit. 26. This permit is issued in reliance upon the accuracy and completeness of information supplied by the owner or operator and is conditioned upon conduct of the activity, or construction, installation and operation of the source, in accordance with this information and with representations made by the owner or operator or owner or operator's agents. It is valid only for the equipment and operations or activity specifically identified on the permit. 27. Unless specifically stated otherwise, the general and specific conditions contained in this permit have been determined by the APCD to be necessary to assure compliance with the provisions of Section 25-7-114.5(7)(a), C.R.S. 28. Each and every condition of this permit is a material part hereof and is not severable. Any challenge to or appeal of a condition hereof shall constitute a rejection of the entire permit and upon such occurrence, this permit shall be deemed denied ab initio. This AIRS ID: 123/9E22 Page 6 of 10 �, °.:.. ��•' -,pfd olor- Depa en P di Health and Environment it Pollution Control Division permit may b=: • a e ti -r t• - 'ficati• . final authorization by the Air Pollution Control Division (APCD) on grounds set forth in the Colorado Air Quality Control Act and regulations of the Air Quality Control Commission (AQCC), including failure to meet any express term or condition of the permit. If the Division denies a permit, conditions imposed upon a permit are contested by the owner or operator, or the Division revokes a permit, the owner or operator of a source may request a hearing before the AQCC for review of the Division's action. 29. Section 25-7-114.7(2)(a), C.R.S. requires that all sources required to file an Air Pollution Emission Notice (APEN) must pay an annual fee to cover the costs of inspections and administration. If a source or activity is to be discontinued, the owner must notify the Division in writing requesting a cancellation of the permit. Upon notification, annual fee billing will terminate. 30. Violation of the terms of a permit or of the provisions of the Colorado Air Pollution Prevention and Control Act or the regulations of the AQCC may result in administrative, civil or criminal enforcement actions under Sections 25-7-115 (enforcement), -121 (injunctions), -122 (civil penalties), -122.1 (criminal penalties), C.R.S. By: Betsy Gillard Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Bill Barrett Corporation AIRS ID: 123/9E22 Page 7 of 10 '. '« sT Notes to Permit Holder Dolor o e epa en li ealth and Environment it Pollution Control Division Notes to Permit Holdero e a 1) The permit holder is required to pay fees for the processing time for this permit. An invoice for these fees will be issued after the permit is issued. The permit holder shall pay the invoice within 30 days of receipt of the invoice. Failure to pay the invoice will result in revocation of this permit (Reference: Regulation No. 3, Part A, Section VI.B.) 2) The production or raw material processing limits and emission limits contained in this permit are based on the consumption rates requested in the permit application. These limits may be revised upon request of the owner or operator providing there is no exceedance of any specific emission control regulation or any ambient air quality standard. A revised air pollution emission notice(APEN) and complete application form must be submitted with a request for a permit revision. 3) This source is subject to the Common Provisions Regulation Part II, Subpart E, Affirmative Defense Provision for Excess Emissions During Malfunctions. The owner or operator shall notify the Division of any malfunction condition which causes a violation of any emission limit or limits stated in this permit as soon as possible, but no later than noon of the next working day, followed by written notice to the Division addressing all of the criteria set forth in Part II.E.1 of the Common Provisions Regulation. See: htto://www.colorado.aov/cs/Satellite?c=Document C&childoagename=CDPHE- Main%2FDocument C%2FCBONAddLinkView&cid=1251599389641&paoename=CBONWrapper 4) The following emissions of non-criteria reportable air pollutants are estimated based upon the process limits as indicated in this permit. This information is listed to inform the operator of the Division's analysis of the specific compounds emitted if the source(s)operate at the permitted limitations. Uncontrolled Emission Are the Controlled AIRS Rate emissions Emission Rate Point Pollutant CAS# (Iblyr) reportable? (Ib/yr) Benzene 714$2 609 Yes 31 Toluene 108883 394 Yes 20 002 n-Hexane 110543. 4743 Yes 237 2,2,4-TMP 540841 587 Yes 29 003 n-Hexane 110543 1003 Yes 1003 Benzene 71432 • 7266 Yes 363 Toluene 108883 6100 Yes 305 Ethylbenzene 100414 1014 Yes 51 004 Xylenes 1330207 1934 Yes 97 n-Hexane 110543 42885 Yes 2144 2,2,4-TMP 540841 5867 Yes 293 AIRS ID: 12319E22 Page 8 of 10 olor-i Depa en . P •li Health and Environment A it Pollution Control Division 5) The emission level - =d i p= ,-. ° b- -- folio .- ission factors: Point 002: Weight Emission Factors Pollutant Fraction of Uncontrolled Source Gas (%) lb/MMscf NOx(lb/MMBTU) --- 0.068 AP-42 CO (lb/MMBTU) --- 0.37 AP-42 VOC 38.71 26483 Gas Analysis Benzene 0.09 61.01 Gas Analysis Toluene 0.06 39.39 Gas Analysis Ethylbenzene 0.00 0.00 Gas Analysis Xylenes 0.02 11.49 Gas Analysis n-hexane 0.69 474.33 Gas Analysis 2,2,4-TMP 0.09 58.77 Gas Analysis Point 003: Emission Factors-Uncontrolled Pollutant lb/1000 gal loaded Source VOC 3.434 AP-42 Benzene 0.013 AP-42 n-Hexane 0.073 AP-42 Toluene 0.008 AP-42 Xylenes 0.002 AP-42 The uncontrolled VOC emission factor was calculated using AP-42, Chapter 5.2, Equation 1 (version 1/95) using the following values: L= 12.46*S*P*MiT S = 0.6 (Submerged loading: dedicated normal service) P (true vapor pressure) = 3.5 psia M (vapor molecular weight) =68 Ib/Ib-mol T(temperature of liquid loaded) =518 °R The uncontrolled non-criteria reportable air pollutant (NCRP) emission factors were calculated by multiplying the mass fraction of each NCRP in the liquids analysis by the VOC emission factor. Point 004: Mole Emission Emission Pollutant Fraction of Factors Factors Source Gas(%) Uncontrolled Controlled Lb/bbl Lb/bbl NOx Ob/MMBTU) --- 0.068 0.068 AP-42 (lb/MMBTU) CO(lb/MMBTU) --- 0.37 0.37 AP-42 VOC 46.26 20.6006 1.0300 ProMax Benzene 0.30 0.1240 0.0062 ProMax Toluene 0.21 0.1041 0.0052 ProMax AIRS ID: 123/9E22 Page 9 of 10 olor epa en li ealth and Environment it Pollution Control Division 'on Pollutant Fraction of Factors Factors Source Gas(%) Uncontrolled Controlled Lb/bbl Lb/bbl Ethylbenzene 0.03 0.0173 0.0009 ProMax Xylenes 0.06 0.0330 0.0016 ProMax n-hexane 1.58 0.7319 0.0366 ProMax 2,2,4-TMP 0.16 0.1001 0.0050 ProMax 6) In accordance with C.R.S. 25-7-114.1, each Air Pollutant Emission Notice(APEN)associated with this permit is valid for a term of five years from the date it was received by the Division.A revised APEN shall be submitted no later than 30 days before the five-year term expires. Please refer to the most recent annual fee invoice to determine the APEN expiration date for each emissions point associated with this permit. For any questions regarding a specific expiration date call the Division at (303)-692-3150. 7) This facility is classified as follows: Applicable Status Requirement Operating Permit Synthetic Minor Source of: VOC, n-Hexane,total HAPs NANSR Synthetic Minor Source of: VOC MACT HH Major Source Requirements: Not Applicable Area Source Requirements: Not Applicable 8) Full text of the Title 40, Protection of Environment Electronic Code of Federal Regulations can be found at the website listed below: http://ecfr.gpoaccess.ciov/ Part 60: Standards of Performance for New Stationary Sources NSPS 60.1-End Subpart A—Subpart KKKK NSPS Part 60,Appendixes Appendix A—Appendix I Part 63: National Emission Standards for Hazardous Air Pollutants for Source Categories MACT 63.1-63.599 Subpart A—Subpart Z MACT 63.600-63.1199 Subpart AA—Subpart DDD MACT 63.1200-63.1439 Subpart EEE—Subpart PPP MACT 63.1440-63.6175 Subpart QQQ—Subpart YYYY MACT 63.6580-63.8830 Subpart 7777-Subpart MMMMM MACT 63.8980-End Subpart NNNNN—Subpart XXXXXX 9) A self certification form and guidance on how to self-certify compliance as required by this permit may be obtained online at:http://www.colorado.cov/pacific/cdphe/air-permit-self-certification AIRS ID: 123/9E22 Page 10 of 10 Colorado Air Permitting Project Project Details Review Engineer: BetsyGillard Package#: 338928 Received Date: 10/9/2015" Review Start Date: 2/11/2016" ' Section 01-Facility Information Company Name: Bill Barrett:;Corporation County AIRS ID: 123 Plant AIRS ID: 9.00E+22 Facility Name: 19141_Anchutz State 5-62-35_36 NWNW Pad Physical Address/Location: NWNW Sec 35 T5N R62W Type of Facility: Exploration Production Well Pad What industry segment? •€lil&Natural Gas Production&Processing ' Is this facility located in a NAAQS non-attainment area? - Yes' ". If yes,for what pollutant? ❑Carbon Monoxide(CO) ❑Particulate Matter(PM) E Ozone(NOx&VOC) • Section 02-Emissions Units In Permit Application Emissions Self Cert AIRs Point# Emissions Source Type Permit# Issuance# Action Engineering Remarks Control? Required? 'It`\V��Z. t. , '', };flit-t , ::!,,,002: •'. Separator Venting .-A. 15W E1301 1 Yes s,tan ; 9 003 :� rbolit Liquid F.oading No 15WE1301 1. ;Yes Yi/ �� ' %.: ,, 2 Permit I al \� 3 004 "Vapor Recovery To ; • ' 15W E13011.1301 1 ;;Yes• , ;i ance 005 - Condensate S Ye's • GPO8 1 N ;Issuance . \ Permit Initial , • 006 • Produced'Water`Sto'rage " Yes K .. GP08 .: 1 Nay\ ,, I ", t. iti ,,'':,'! O{,;a v ,_.a--. .-__ _ ,:: i,', -, Rt /,,.,,, __ _ Ads .v/ l.. way • C .. R Section 03-Description of Project ' New oil and gas'multiple welt facility with four(4)3-phase HP separators,one(1)heater treater,and:one(1)VRT.Flash emissions,are.captured with three-(3)electric VRTs.VRU downtime is an estimated 1836 and'controlled by enclosed Combustion devices::Emissions from.condensate and`produced , water storage tanks onsite are routed to ECDs.:One(1);backup flare onsite for gas pipeline downtime-(from VRU). Section 04-Public Comment Requirments Is Public Comment Required? " If yes,why?' Requesting yntheti oriPermit Colorado Air Permitting Project Section 05-Ambient Air Impact Analysis Requirements Was a quantitative modeling analysis required?2 If yes,for what pollutants? J1 If yes,attach a copy of Technical Services Unit modeling results summary. Section 06-Facility-Wide Stationary Source Classification Is this stationary source a true minor? Is this stationary source a synthetic minor? If es ex.lain what •ro:rams and which •ollutants here: Is this stationary source a major source? If yes,explain what programs and which pollutants here: One low-pressure separator controlled by one enclosed flare during VRU downtime.Flare has a minimum 002 control efficiency of 95%. Equipment Description This source vents natural gas from: a well head separator Emissions from this source are: routed to a flare Natural gas venting from a well head separator.Emissions from this source are routed to a flare. Calculations Emission Calculation Method EPA Emission Inventory Improvement Program Publication:Volume II,Chapter 10-Displacement Equation(10.4-3) Ex=Q`MW`Xx/C Ex=emissions of pollutant x Q=Volumetric flow rate/volume of gas processed MW=Molecular weight of gas=SG of gas*MW of air Xx=mass fraction of x in gas C=molar volume of ideal gas(379 scf/lb-mol)at 60F and 1 atm Throughput(Q) 10.00 MMscf/yr 1141.552511 scf/hr MW 25.919 lb/lb-mol 0.02739726 MMscf/d mole% MW Ibx/Ibmol mass fraction Ib/hr lb/yr tpy Helium 0.00 4.0026 0.000 0.000 0.00 0.00 0.00 CO2 2.65 44.01 1.166 0.045 3.51 30773.32 15.39 N2 0.66 28.013 0.184 0.007 0.56 4864.95 2.43 methane 62.93 16.041 10.095 0.389 30.41 266357.21 133.18 ethane 14.76 30.063 4.436 0.171 13.36 117055.33 58.53 propane 11.25 44.092 4.962 0.191 14.95 130925.32 65.46 isobutane 1.20 58.118 0.700 0.027 2.11 18473.55 9.24 n-butane 3.87 58.118 2.247 0.087 6.77 59297.23 29.65 isopentane 0.76 72.114 0.551 0.021 1.66 14535.06 7.27 n-pentane 0.95 72.114 0.682 0.026 2.05 17992.35 9.00 cyclopentane 0.00 70.13 0.000 0.000 0.00 0.00 0.00 n-Hexane 0.21 86.18 0.180 0.007 0.54 4743.31 2.37 cyclohexane 0.05 84.16 0.043 0.002 0.13 1123.61 0.56 ' Other hexanes 0.30 86.18 0.261 0.010 0.79 6883.03 3.44 heptanes 0.25 100.21 0.249 0.010 0.75 6557.28 3.28 methylcyclohexane 0.04 98.19 0.038 0.001 0.11 989.67 0.49 224-TMP 0.02 114.23 0.022 0.00086 0.07 587.73 0.29 Benzene 0.03 78.12 0.023 0.00089 0.07 610.12 0.31 Toluene 0.02 92.15 0.015 0.00058 0.04 393.89 0.20 Ethylbenzene 0.00 106.17 0.000 0.00000 0.00 0.00 0.00 Xylenes 0.00 106.17 0.004 0.00017 0.01 114.85 0.06 C8+Heavies 0.05 121.1000539 0.061 0.002 0.18 1600.82 0.80 VOC mass fracl 0.387 Total VOC(Uncontrolled) 132.41 Notes Mole%,MW,and mass fractions from Anschutz 5-62-35 sales gas analysis collected 07/30/15. Annual flow rate is estimated based on total projected sales gas production I calculated the average MW of C8+based on the average MW on the analysis for the gas. Permited emissions are slightly higher than those in these calculations to acount for pilot gas 15WE1301.CP1.xlsm One low-pressure separator controlled by one enclosed flare during VRU downtime.Flare has a minimum 002 control efficiency of 95%. Flaring Information Equipment Description Open flare to combust sales gas during sales pipeline downtime. Manufacturer Cimarron Model 3"HV Serial Number TBD Gas Heating Value 1474 Btu/scf Throughput 14740 MMBtu/yr Overall Control 95.00% Combustion emission factor source: AP-42:Chapter 13.5 0.07 I lb NOX/MMBtu 0.37 jib CO/MMBtu Emissions Summary Table Pollutant Uncontrolled Emission Factor Controlled Emission Factor Uncontrolled Emissions Controlled Emissions Source V0C 26483 lb/MMscf 1324.14 lb/MMscf 132.4 tpy 6.6 tpy Gas Analysis Nox 0.07 Ib/MMBTU 0.07 Ib/MMBTU 0.5 tpy 0.5 tpy AP-42 CO 0.37 lb/MMBTU 0.37 Ib/MMBTU 2.7 tpy 2.7 tpy AP-42 Benzene 61.01 lb/MMscf 3.05 lb/MMscf 610 lb/yr 31 lb/yr Gas Analysis n-Hexane 474.33 lb/MMscf 23.72 lb/MMscf 4743 lb/yr 237 lb/yr Gas Analysis Toluene 39.39 Ib/MMscf 1.97 lb/MMscf 394 lb/yr 20 lb/yr Gas Analysis Xylenes 11.49 lb/MMscf 0.57 lb/MMscf 115 lb/yr 6 lb/yr Gas Analysis Ethylbenzene 0.00 lb/MMscf 0.00 lb/MMscf 0 lb/yr 0 lb/yr Gas Analysis 2,2,4-TMP 58.77Ib/MMscf 2.94IIb/MMsd 588 lb/yr 29 lb/yr Gas Analysis Regulatory Applicability AQCC Reaulation 1 This source is subject to the opacity requirements for flares in Section IIA.5:'No owner or operator of a smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the atmosphere of any air pollutant which is in excess of 30%opacity.' AQCC Reaulation 2 Section IA applies to all emission sources."No person,wherever located,shall cause or allowlthe emission of odorous air contaminants from any single source such as to result in detectable odors which are measured in excess of the following limits: For areas used predominantly for residential or commercial purposes it is a violation if odors are detected after the odorous air has been diluted with seven(7)or more volumes of odor free air." AQCC Reaulation 7 Was the well newly constructed,hydraulically fractured,or recompleted on or after August 1,2014? yes This separator is subject to Reg 7,Section XVII.G.and control requirements of Reg 7,Section XVII.B.2 • 15WE1301.CPLxlsm 003 Hydrocarbon Loadout to Tanker Trucks Calculations L=12.46*S*P*M/T(AP-42:Chapter 5.2, Equation 1) L=loading losses in lb per 1000 gallons loaded Factor Meaning Value Units Source S Saturation Factor 0.6 AP-42 P True Vapor Pressure 3.5 psia Sales Oil Analysis M Molecular Weight of Vap 68 lb/lb-mole AP-42 T Liquid Temperature 518.16 deg.R Field Data L 3.43 lb/10^3 gal 1.44E-01 lb/bbl Annual requested Throughput 325522 BBL/yr 13671924 gal/yr Annual requested VOC emissions 46947 lb/yr 23.47 tpy Control: None Efficiency: 0.00% NCRPs Component Mass Fraction Benzene 0.0037 n-hexane 0.0214 Toluene 0.0024 Xylenes 0.0006 Source: Promax Tank Gas to ECD Emissions Summary Table Pollutant Emission Factor Uncontrolled Emissions Controlled Emissions Source VOC 0.1442 lb/bbl 23.5 tpy 23.5 tpy AP-42 Benzene 0.0005 lb/bbl 175 lb/yr 175 lb/yr AP-42 n-Hexane 0.0031 lb/bbl 1003 lb/yr 1003 lb/yr AP-42 Toluene 0.0004 lb/bbl 115 lb/yr 115 lb/yr AP-42 Xylenes 0.0001 lb/bbl 27 lb/yr 27 lb/yr AP-42 Regulatory Review Regulation 3-APEN and Permitting Requirements Is this site considered an exploration and production location(e.g.well pad)? Yes If yes, review the following two exemptions for applicability: Does the operator unload less than 10,000 gallons(238 BBLs)per day of crude oil on an annual average basis? No If yes,this emissions point is categorically exempt from permit requirements per Regulation 3,Part B,Section II.D.1.i Does this operator unload less than 6,750 bbls per year of condensate via splash fill or 16,308 bbls per year of condensate via submerged fill procedure? No If yes,this emissions point is categorically exempt from permit requirements per Regulation 3,Part B,Section II.D.1.1 004 One (1) heated separator and one (1)VRT venting during VRU downtime. VRU downtime is estimated 18% of condensate throughput. Requsted Throughput 58594 bbl Control Flare Efficiency 95.00%I Emissions Summary Table Pollutant Emission Factor Uncontrolled-Emissions Controlled Emissions Source VOC 20.6006 lb/bbl 603.5 tpy 30.2 tpy ProMax Nox 0.068 lb/MMBtu — tpy 0.6 tpy ,AP-42 CO 0.37 lb/MMBtu -- tpy 3.2 tpy AP-42 Benzene 0.124.lb/bbl 7266 lb/yr 363 lb/yr ProMax Toluene 0.1041 lb/bbl 6100 lb/yr 305 lb/yr ProMax Ethylbenze 0.0173 lb/bbl 1014 lb/yr 51 lb/yr ProMax Xylenes 0.033 lb/bbl 1934 lb/yr 97 lb/yr ProMax n-Hexane 0.7319 lb/bbl 42885 lb/yr 2144 lb/yr ProMax 2,2,4-TMP 0.1001 lb/bbl 5865 lb/yr 293 lb/yr ProMax Regulatory Review AQCC Regulation 1 This source is subject to the opacity requirements for flares in Section II.A.5:'No owner or operator of a smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the atmosphere of any air pollutant which is in excess of 30%opacity.' AQCC Regulation 2 Section I.A applies to all emission sources. 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