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Home My WebLink About20141107.tiff STATE OF COLORADO John W.Hickenlooper,Governor Larry Wolk,MD,MSPH Aoe• c°C\ Executive Director and Chief Medical Officer h��9p Dedicated to protecting and improving the health and environment of the people of Colorado * ,., 4300 Cherry Creek Dr.S. Laboratory Services DivisionNt.`•t''--e.•v��> Denver,Colorado 80246-1530 8100 Lowry Blvd. Phone(303)692-2000 Denver,Colorado 80230-6928 Colorado Department Located in Glendale.Colorado (303)692-3090 of Public Health www.colorado.gov/cdphe and Environment Weld County -Clerk to the Board 1150 O St PO Box 758 Greeley, CO 80632 April 2, 2014 Dear Sir or Madam: On April 5, 2014, the Air Pollution Control Division will publish a public notice for Noble Energy, Inc— Wells Ranch EcoNode 27. in the the (ireelcy Trlbunc. 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 date the public notice is published. Please send any comment regarding this public notice to the address below. Colorado Dept. of Public Health& Environment A PCD-SS-B 1 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 Attention: Clara Gonzales Regards, Clara Gonzales Public Notice Coordinator Stationary Sources Program Air Pollution Control Division Enclosure TUjouf C hLOAmlhA) MIC(L1Ct+) tq IL/ (P6) 2014-1107 STATE OF COLORADO John W.Hickenlooper,Governor Larry Wolk, MD, MSPH Aor:cozo, Executive Director and Chief Medical Officer ,To Dedicated to protecting and improving the health and environment of the people of Colorado a f' a v 'k o 4300 Cherry Creek Dr. S. Laboratory Services Division x ra75 Denver,Colorado 80246-1530 8100 Lowry Blvd. Phone(303)692-2000 Denver,Colorado 80230-6928 Colorado Department Located in Glendale,Colorado (303)692-3090 of Public Health www.colorado.gov/cdphe and Environment Website Title: Noble Energy, Inc—Wells Ranch EcoNode 27—Weld County Released To: The Greeley Tribune On: April 2, 2014 Published: April 5,2014 PUBLIC NOTICE OF A PROPOSED PROJECT OR ACTIVITY WARRANTING PUBLIC COMMENT 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: Noble Energy, Inc Facility: Wells Ranch EcoNode 27 Oil and gas exploration and production wellhead site NWSW Section 27, T6N, R63W Weld County The proposed project or activity is as follows: Oil and gas exploration and production wellhead site including a venting flare and associated fugitives. 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 The Division has made a preliminary determination of approval of the application. A copy of the application, the Division's analysis, and a draft of Construction Permit 14WE0273 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 www.colorado.gov/cdphe/AirPublicNotices 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: Stephanie Chaousy Colorado Department of Public Health and Environment 4300 Cherry Creek Drive South, APCD-SS-BI Denver, Colorado 80246-1530 cdphe.commentsapcd@state.co.us STATE OF COLORADO ,p?•COI\ COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT es=-- AIR POLLUTION CONTROL DIVISION (7/5,-\ TELEPHONE: (303)692-3150 \�1896� CONSTRUCTION PERMIT PERMIT NO: 14W E0273 Issuance 1 DATE ISSUED: ISSUED TO: Noble Energy, Inc. THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS: Oil and gas facility, known as the Wells Ranch EcoNode 27, located in the NWSW of Section 27, Township 6 North, Range 63 West, in Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Equipment Point Description ID Separator controlled by a 40' flare stack. Flare has a minimum Flare 002 combustion efficiency of 95%. The flare is not enclosed. Equipment leaks (fugitive VOCs) from a natural gas production Fugitive 003 facility. 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 issuance of this permit, 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). 2. This permit shall expire if the owner or operator of the source for which this permit was issued: (i) does not commence construction/modification or operation of this source within 18 months after either, the date of issuance of this 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.) AIRS ID: 123/9C4B Page 1 of 10 Wellhead Version 2012-1 llID Col.A-` • D men! of Public Health and Environment C � , Air Pollution Control Division _.. 3. 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.) 4. Point 002: The following information for all permitted equipment except fugitive emissions from equipment leaks shall be provided to the Division within fifteen (15)days after issuance of permit. • manufacturer • model number • serial number This information shall be included with the Notice of Startup submitted for the equipment. (Reference: Regulation No. 3, Part B, 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 Emission Type Equipment ID Point NO, VOC CO yp Flare 002 8.9 60.9 48.4 Point Fugitive 003 --- 23.7 --- Fugitive See "Notes to Permit Holder#4"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. 7. Point 003: The operator shall calculate actual emissions from this emissions point based on representative component counts for the facility with the most recent gas analysis, as required in the Compliance Testing and Sampling section of this permit. The operator shall maintain records of the results of component counts and sampling events used to calculate actual emissions and the dates that these counts and events were completed.These records shall be provided to the Division upon request. AIRS ID: 123/9C4B Page 2 of 10 t*�-v.+.+, Cok . • D- ment f Public Health and Environment Air Pollution Control Division 8. The emission points in the table below shall be operated and maintained 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 Flare 002 Separator controlled by a flare stack VOC PROCESS LIMITATIONS AND RECORDS 9. This source shall be limited to the following maximum processing rates as listed below. Monthly records of the throughput shall be maintained by the applicant and made available to the Division for inspection upon request. (Reference: Regulation 3, Part B, II.A.4) Process/Consumption Limits Facility AIRS Process Parameter Annual Limit Equipment ID Point Flare 002 Natural gas flaring 208 MMSCF/yr The owner or operator shall calculate monthly process rates based on the calendar month. 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. STATE AND FEDERAL REGULATORY REQUIREMENTS 10. The permit number and AIRS ID number 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 equipment visible emissions shall not exceed 30% opacity for more than six minutes in any sixty consecutive minutes. (Reference: Regulation No. 1, Section II.A.1. & 4.) 12. 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 for a period or periods aggregating more than six minutes in any sixty consecutive minutes. (Reference: Regulation No. 1, Section II.A.5.) 13. These sources are subject to the odor requirements of Regulation No. 2. (State only enforceable) 14. Point 003: This source is subject to Regulation No. 7, Section XII.C General Provisions (State only enforceable). All condensate collection, storage, processing and handling 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. The operator shall comply with all applicable requirements of Section XII. 15. Point 003: Minor sources in designated nonattainment or attainment/maintenance areas that are otherwise not exempt pursuant to Section II.D. of Regulation No. 3, Part B, shall apply AIRS ID: 123/9C4B Page 3 of 10 Colf . D t. men f Public Health and Environment Air Pollution Control Division Reasonably Available Control Technology (RACT) for the pollutants for which the area is nonattainment or attainment/maintenance (Reference: Regulation No. 3, Part B, III.D.2.a). This requirement to apply RACT shall be satisfied by installing/implementing the following emission controls: a. Directed Inspection &Maintenance as described below shall satisfy the requirement to apply RACT. i. Auditory/visual/olfactory inspection (AVO)will be performed on a quarterly basis. ii. For each leak found in the AVO inspection, a gas detector shall be used to determine the size of the leak. The gas detector shall be regularly calibrated. Component leaks greater than 10,000 ppm shall be managed in accordance with Item (vi) below, unless it is unfeasible to make the repair without shutting down the affected operation of the facility. For such component leaks that require a shutdown to be repaired, repair shall occur during the first shutdown of the affected operation after the leak is discovered. Hi. For repair, valves adjacent to the equipment to be repaired will be closed if practicable, minimizing the volume released. iv. Repaired components shall be re-screened using portable analyzer to determine if the leak is repaired. Leak shall be considered repaired when 10,000 ppm is registered when tested. v. The following records shall be maintained for a period of two years: • The name of the site screened via AVO inspection and the name of the inspector. . • Components evaluated with the gas detector. • Repair methods applied. • Dates of the AVO inspections, gas detector calibrations, attempted repairs, successful repairs, repair delays, and post- ' repair screenings. vi. Leaks shall be repaired as soon as practicable, but no later than 15 calendar days after detection, unless it is technically or operationally infeasible to make the repair within 15 calendar days. Records documenting the rationale shall be maintained if it is technically or operationally infeasible to make the repair within 15 calendar days. OPERATING & MAINTENANCE REQUIREMENTS 16. Point 002: Upon startup of these points, the applicant shall follow the 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.) COMPLIANCE TESTING AND SAMPLING Initial Testing Requirements AIRS ID: 123/9C4B Page 4 of 10 <.= i". Colc-a D atimen f Public Health and Environment Air Pollution Control Division 17. Point 002: The operator shall complete an initial site specific extended gas analysis of the natural gas produced at this site in order to verify the VOC, benzene, toluene, ethylbenzene, xylenes, n-hexane, and 2,2,4-trimethylpentane content (weight fraction) of this emission stream used in the permit application. Results of testing shall be used to determine site- specific emission factors using Division approved methods. Results of site-specific sampling and analysis shall be submitted to the Division as part of the self-certification and used to demonstrate compliance with the emissions factors chosen for this emissions point. 18. Point 002: The owner or operator shall demonstrate compliance with Condition 12 using EPA Method 9 to measure opacity from the flare. (Reference: Regulation No. 1, Section II.A.5) 19. Point 003: Within one hundred and eighty days(180)after issuance of permit,the permittee shall complete the initial extended gas analysis of gas samples and extended natural gas liquids analysis of liquids that are representative of volatile organic compound (VOC) and hazardous air pollutants (HAP) that may be released as fugitive emissions. This extended gas and liquids analyses shall be used in the compliance demonstration as required in the Emission Limits and Records section of this permit. The operator shall submit the results of the gas and liquids analyses and emission calculations to the Division as part of the self- certification process to ensure compliance with emissions limits. 20. Point 003: Within one hundred and eighty days (180) after issuance of permit, the operator shall complete a hard count of components at the source and establish the number of components that are operated in "heavy liquid service", "light liquid service", "water/oil service" and "gas service". The operator shall submit the results to the Division as part of the self-certification process to ensure compliance with emissions limits. Periodic Testing Requirements 21. Point 002: On an annual basis, the operator shall complete a site specific extended gas analysis of the natural gas produced at this site that is routed to the flare in order to verify the VOC content (weight fraction)of this emission stream used in the permit application. Results of testing shall be used to determine site-specific emission factors using Division approved methods. 22. Point 003: On an annual basis, the owner or operator shall complete an extended gas analysis of gas samples that are representative of volatile organic compounds (VOC) and hazardous air pollutants (HAP) that may be released as fugitive emissions. This extended gas analysis shall be used in the compliance demonstration as required in the Emission Limits and Records section of this permit. ADDITIONAL REQUIREMENTS 23. A revised Air Pollutant Emission Notice(APEN)shall be filed: (Reference: Regulation No.3, Part A, II.C) a. Annually whenever a significant increase in emissions occurs as follows: For any criteria pollutant: For sources emitting less than 100 tons per year, a change in actual emissions of five (5) tons per year or more, above the level reported on the last APEN; or For any non-criteria reportable pollutant: If 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. AIRS ID: 123/9C4B Page 5 of 10 Col D men Public Health and Environment Air Pollution Control 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. 24. 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 25. 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. 26. 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. 27. This permit is issued in reliance upon the accuracy and completeness of information supplied by the applicant and is conditioned upon conduct of the activity, or construction, installation and operation of the source, in accordance with this information and with representations made by the applicant or applicant's agents. It is valid only for the equipment and operations or activity specifically identified on the permit. 28. 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. 29. Each and every condition of this permit is a material part hereof and is not severable. Any challenge to or appeal of a condition hereof shall constitute a rejection of the entire permit and upon such occurrence,this permit shall be deemed denied ab initio. This permit may be revoked at any time prior to self-certification and 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 applicant, or the Division revokes a permit,the applicant or owner or operator of a source may request a hearing before the AQCC for review of the Division's action. AIRS ID: 123/9C4B Page 6 of 10 a a� Col "a De¢ S,s:men f Public Health and Environment Air Pollution Control Division 30. 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. 31. 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: Stephanie Chaousy, PE Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Noble Energy, Inc. Newly permitted separator flare and associated fugitive emissions at a synthetic minor facility. AIRS ID: 123/9046 Page 7 of 10 IICoI!A •. D _x men f Public Health and Environment Air Pollution Control Division Notes to Permit Holder: 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 permittee providing there is no exceedance of any specific emission control regulation or any ambient air quality standard. A revised air pollution emission notice(APEN)and application form must be submitted with a request for a permit revision. 3) This source is subject to the Common Provisions Regulation Part II, Subpart E, Affirmative Defense Provision for Excess Emissions During Malfunctions. The permittee 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: http://www.colorado.gov/cs/Satellite?c=Document C&childpaqename=CDPHE- Main%2FDocument C%2FCBONAddLinkView&cid=1251599389641&pagename=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 Point Pollutant CAS# BIN (lb/yr) reportable? Rate (Ib/yr) Benzene 71432 A 23951 Yes 1198 Toluene 108883 C 23951 Yes 1198 ' 002 Ethylbenzene 100414 C 12080 Yes 604 Xylenes 1130207 C 12080 Yes 604 n-Hexane 110543 C 72063 Yes 3603 Benzene 71432 A 467 Yes 467 Toluene 108883 C 467 No 467 003 Ethylbenzene 100414 C 239 No 239 Xylenes 1130207 C 239 No 239 n-Hexane 110543 C 1408 Yes 1408 5) The emission levels contained in this permit are based on the following emission factors: Point 002: Weight Emission Emission CAS# Pollutant Fraction of Factors Factors Source Gas (%) Uncontrolled Controlled NOx 0.068 0.068 AP-42 lb/MMBtu lb/MMBtu AIRS ID: 12319C4B Page 8 of 10 .;,k •.j:- x s`'.r 4,- Col a . Diaimentpf Public Health and Environment Air Pollution Control Division Weight Emission Emission CAS# Pollutant Fraction of Factors Factors Source Gas(%) Uncontrolled Controlled CO 0.37 AP-42 ___ 0.37 lb/MMBtu lb/MMBtu VOC 20.19 11715.385 585.769 Engineering lb/MMscf lb/mmscf Calculation 71432 Benzene 0.20 115.149 5.758 Engineering lb/MMscf lb/mmscf Calculation 108883 Toluene 0.20 115.149 5.758 Engineering lb/MMscf lb/mmscf Calculation 100414 Ethylbenzene 0.10 58.077 2.904 Engineering lb/MMscf lb/mmscf Calculation 1330207 Xylenes 0.10 58.077 2.904 Engineering lb/MMscf lb/mmscf Calculation 110543 n-hexane 0.60 346.457 17.323 Engineering lb/MMscf lb/mmscf Calculation Note: The uncontrolled VOC and HAP emissions for this point were calculated using the October 25, 2013 analysis of a gas sample collected from the WR 27 well.The controlled VOC and HAP emissions factors for point 002 are based on the flare control efficiency of 95%. Point 003: Component Gas Service Heavy Oil Light Oil ervi S Oil Service Connectors 781 353 387 174 Flanges 205 --- 84 4 Open-Ended Lines 4 --- --- --- Pump Seals --- --- 2 --- Valves 505 118 410 59 Other 114 --- 29 22 VOC Content(wt%) 21.38% 100% 100% 100% Benzene Content(wt%) 0.21% 0.99% 0.99% 0.99% Toluene Content(wt%) 0.21% 0.99% 0.99% 0.99% Ethylbenzene (wt %) 0.11% 0.50% 0.50% 0.50% Xylenes Content(wt%) 0.11% 0.50% 0.50% 0.50% n-hexane Content(wt%) 0.64% 2.97% 2.97% 2.97% *Other equipment type includes compressors, pressure relief valves, relief valves, diaphragms, drains, dump arms, hatches, instrument meters, polish rods and vents TOC Emission Factors (kg/hr-component): Water/Oil Component Gas Service Heavy Oil Light Oil Service Service Connectors 2.0E-04 7.5E-06 2.1E-04 1.1E-04 Flanges 3.9E-04 3.9E-07 1.1E-04 2.9E-06 Open-ended Lines 2.0E-03 1.4E-04 1.4E-03 2.5E-04 Pump Seals 2.4E-03 NA 1.3E-02 2.4E-05 Valves 4.5E-03 8.4E-06 2.5E-03 9.8E-05 AIRS ID: 123/9C48 Page 9 of 10 Col.A . D- F.,trmen f Public Health and Environment Air Pollution Control Division Other 8.8E-03 3.2E-05 7.5E-03 1.4E-02 Source: EPA-453/R95-017 Compliance with emissions limits in this permit will be demonstrated by using the TOC emission factors listed in the table above with representative component counts, multiplied by the VOC content from the mast recent gas analysis. 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, benzene,toluene, n-hexane,total HAPS PSD or NANSR Synthetic Minor Source of: VOC MACT HH 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:L ecfr.gpoaccess.eov' Part 60: Standards of Performance for New Stationary Sources NSPS 60.1-End SubpartA—SubpartKKKK 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 ZZZZ—Subpart MMMMM MACT 63.8980-End Subpart NNNNN—Subpart XXXXXX 9) An Oil and Gas Industry Construction Permit Self-Certification Form is included with this permit packet. Please use this form to complete the self-certification requirements as specified in the permit conditions. Further guidance on self-certification can be found on our website at: www.colorado.qovicdphe/oilqaspermits AIRS ID: 123/9C4B Page 10 of 10 Construction Permit Application Preliminary Analysis Summary Section 1 —Applicant Information Company Name: Noble Energy, Inc. Permit Number: 14WE0273 Source Location: Wells Ranch EcoNode 27 NWSW Section 27, T6N, R63W, Weld County (non-attainment) Point 002: Plant flare with a minimum combustion efficiency of 95%. Equipment Description: • Point 003: Fugitive emissions AIRS ID: 123-9C4B Date: February 27, 2014 Review Engineer: Stephanie Chaousy, PE Control Engineer: Chris Laplante Section 2—Action Completed Grandfathered Modification APEN Required/Permit Exempt X CP1 Transfer of Ownership APEN Exempt/Permit Exempt Section 3—Applicant Completeness Review Was the correct APEN submitted for this source type? X Yes No Is the APEN signed with an original signature? X Yes No Was the APEN filled out completely? X Yes No Did the applicant submit all required paperwork? X Yes No Did the applicant provide ample information to determine emission rates? X Yes No If you answered"no" to any of the above, when did you mail an See Section 14 Information Request letter to the source? On what date was this application complete? January 15, 2014 Section 4—Source Description AIRS Point Equipment Description Separator controlled by a flare stack. Flare has a minimum combustion efficiency of 002 95%. The flare is not enclosed. 003 Fugitive emission leaks. Is this a portable source? Yes X No Is this location in a non-attainment area for any criteria X Yes No pollutant? If"yes", for what pollutant? PM10 CO X Ozone Is this location in an attainment maintenance area for Yes X No any criteria pollutant? If"yes", for what pollutant? (Note: These pollutants are subject to minor source PM10 CO Ozone RACT per Regulation 3, Part B, Section III.D.2) Is this source located in the 8-hour ozone non- attainment region? (Note: If"yes" the provisions of X Yes No Regulation 7, Sections XII and XVII.C may apply) Page 1 Section 5—Emission Estimate Information AIRS Point Emission Factor Source 002 Site-specific using VOC weight fraction (Refer to Section 14 for calculations) 003 EPA-453/R-95-017, Table 2-4 Did the applicant provide actual process data for the emission inventory? X Yes No Basis for Potential to Emit(PTE) AIRS Point Process Consumption/Throughput/Production 002 208 mmscf/yr Equipment Type Gas Heavy Oil (or Light Oil (or Water/Oil Heavy Liquid) Light Liquid) Connectors 781 353 387 174 003 Flanges 205 --- 84 4 Open-Ended Lines 4 --- --- --- Pump Seals --- --- 2 --- Valves 505 118 410 59 Other 114 --- 29 22 Basis for Actual Emissions Reported During this APEN Filing (Reported to Inventory) AIRS Point Process Consumption/Throughput/Production Data Year 002 208 mmscf/yr Equipment Type Gas Heavy Oil Light Oil Water/Oil (or Heavy (or Light Liquid) Liquid) Connectors 781 353 387 174 003 Flanges 205 --- 84 4 Open-Ended 4 --- --- --- Lines _ Pump Seals --- --- 2 --- Valves 505 118 410 59 Other 114 --- 29 22 Basis for Permitted Emissions(Permit Limits) AIRS Point Process Consumption/Throughput/Production 002 208 mmscf/yr Equipment Type Gas Heavy Oil (or Light Oil (or Water/Oil Heavy Liquid) Light Liquid) Connectors 781 353 387 174 003 Flanges 20.5 --- 84 4 Open-Ended Lines 4 --- --- --- Pump Seals --- --- 2 --- Valves 505 118 410 59 Other 114 --- 29 22 Does this facility use control devices? X Yes No AIRS Point Process Control Device Description % Reduction Granted 002 01 Separator flare 95 Section 6—Emission Summary (tons per year) Point NO, VOC CO SOx PM10 Single HAP Total HAP Page 2 1.9 GP02 3.3 10.3 21.3 --- (formaldehyde) 2.2 PTE: 002 8.9 1218.4 48.4 --- -_- 36.0 72.0 (n-hexane) 003 -- 23.7 --- --- --- 0.7 (n-hexane) 1,4 Uncontrolled point GP02 3.3 10.3 21.3 --- --- 1.9 2.2 source emission rate: (formaldehyde) 002 8.9 1218.4 48.4 --- --- 36.0 72.0 (n-hexane) 003 -- 23.7 --- --- --- 0.7 (n-hexane) 1.4 TOTAL(TPY) 12.2 1252.4 69.7 --- --- 36.7(n- 75.6 hexane) GP02 3.3 4.7 1.7 -- """ 1.9 (formaldehyde) 2.2 Controlled point 1.8 source emission rate: 002 8.9 60.9 48.4 -- --- 3.6 (n-hexane) 003 -- 23.7 --- --- --- 0.7 (n-hexane) 1.4 TOTAL PERMITTED 12.2 89.3 50.1 --- --- 2.5 (n-hexane) 7.2 (TPY) Section 7- Non-Criteria/ Hazardous Air Pollutants Uncontrolled Are the mission Rate Pollutant CAS # BIN Emission Rate emissions Controlled I E r (Ib/yr) reportable? ( Y ) Point 002 Benzene 71432 A 23951 Yes 1198 Toluene 108883 C 23951 Yes 1198 Ethylbenzene 100414 C 12080 Yes 604 Xylenes 1130207 C 12080 Yes 604 n-Hexane 110543 C 72063 Yes 3603 Point 003 Benzene 71432 A 467 Yes 467 Toluene 108883 C 467 No 467 Ethylbenzene 100414 C 239 No 239 Xylenes 1130207 C 239 No 239 n-Hexane 110543 C 1408 Yes 1408 Note: Regulation 3, Part A, Section lI.B.3.b APEN emission reporting requirements for non-criteria air pollutants are based on potential emissions without credit for reductions achieved by control devices used by the operator. Section 8—Testing Requirements Will testing be required to show compliance with any emission rate or regulatory X Yes No standard? If"yes", complete the information listed below AIRS Point Process Pollutant Regulatory Basis Test Method 002 01 VOC, State only requirement Site-specific gas HAPS analysis 003 01 VOC, State only requirement Site-specific gas HAPS analysis Page 3 003 al VOC, State only requirement Hard component HAPS count Section 9—Source Classification What is this facility classification? True X Synthetic Major Minor Minor Classification relates to what programs? X Title V X PSD NA NSR X MACT Is this a modification to an existing permit? Yes X No If"yes"what kind of modification? Minor Synthetic Major Minor Section 10—Public Comment Does this permit require public comment per CAQCC Regulation 3? X Yes No If"yes",for which pollutants?Why? VOC For Reg. 3, Part B, III.C.1.a(emissions increase> 25/50 tpy)? X Yes No For Reg. 3, Part B, III.C.1.c.iii (subject to MACT)? Yes X No For Reg. 3, Part B, III.C.1.d (synthetic minor emission limits)? X Yes No Section 11 —Modeling Is modeling required to demonstrate compliance with National Ambient Yes X No Air Quality Standards(NAAQS)? If"yes", for which pollutants?Why? NOx emissions are less than 40 TPY. AIRS Point Section 12—Regulatory Review Regulation 1 - Particulate, Smoke, Carbon Monoxide and Sulfur Dioxide Section II.A.1 -Except as provided in paragraphs 2 through 6 below, no owner or operator of a source shall allow or cause the emission into the atmosphere of any air pollutant which is in excess of 20%opacity. This standard is based on 24 consecutive opacity readings taken at 15-second intervals for six minutes. The approved reference test method for visible emissions measurement is EPA Method 9 (40 CFR, Part 60, Appendix 002, 003 A(July, 1992)) in all subsections of Section II. A and B of this regulation. Section II.A.5 -Smokeless Flare or Flares for the Combustion of Waste Gases 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 for a period or periods aggregating more than six minutes in any sixty consecutive minutes. Regulation 2—Odor Section I.A- No person, wherever located, shall cause or allow the emission of odorous air contaminants from any single source such as to result in detectable odors which are 002, 003 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. Regulation 3-APENs, Construction Permits, Operating Permits, PSD Part A-APEN Requirements Criteria Pollutants: For criteria pollutants, Air Pollutant Emission Notices are required for: 002, 003 each individual emission point in a non-attainment area with uncontrolled actual emissions of one ton per year or more of any individual criteria pollutant(pollutants are not summed) for which the area is non-attainment. (Applicant is required to file an APEN since emissions exceed 1 ton per year VOC) Part B—Construction Permit Exemptions 002, 003 Applicant is required to obtain a permit since uncontrolled VOC emissions from this facility are greater than the 2.0 TPY threshold(Reg.3, Part B, Section II.D.2.a) . Regulation 6- New Source Performance Standards 002 None Page 4 NSPS KKK: Equipment Leaks of VOC from onshore natural gas processing plants. Affected facilities at onshore natural gas facilities (any processing site engaged in 003 the extraction of natural gas liquids from field gas, fractionation of mixed natural gas liquids (NGLs)or both). Source not subject since it is located at a wellhead site. Regulation 7—Volatile Organic Compounds 002 None 003 Section XII.G: If facility is a not natural gas processing plant located in non- attainment area, therefore, not subject to Section XII.G. Regulation 8—Hazardous Air Pollutants 002 None MACT HH: If facility is MAJOR source for HAP (summation of HAPS of dehydrators 003 and fugitives), then fugitive emissions are subject to MACT HH. Source is at an E&P site (not a gas plant), therefore, not subject to MACT HH. Section 13—Aerometric Information Retrieval System Coding Information Emission Pollutant/ Fugitive Emission Factor Control Point Process Process Description Factor CAS# (Y/N) Source (%) 11715.385 VOC No Engineering 95 lb/MMscf Calculation 0.068 NOx No AP-42, NA lb/MMBtu Table 13.5-1 0.37 CO No AP-42, NA Ib/MMBtu Table 13.5-1 115.149 Benzene No Engineering 95 lb/MMscf Calculation 01 Flare 002 115.149 Toluene No Engineering 95 Ib/MMscf Calculation 58.077 Ethlybenzene No Engineering 95 lb/MMscf Calculation 58.077 X lenes No Engineering y 95 Ib/MMscf Calculation 346.457 n-hexane No Engineering 95 lb/MMscf Calculation SCC 31000205-Flares 01 Fugitive VOC Leak VOC Yes EPA-453/R-95-017, NA 003 Emissions Table 2-4 SCC 31000220: All Equip. Leak Fugitives (Valves,flanges, connections, seals, drains) Page 5 Section 14—Miscellaneous Application Notes AIRS Point 002 Flare VOC= (1218.4 TPY*2000 lb/T)/(208 mmscf/yr= 11715.385 lb/mmscf(APEN says 11.7 lb/mscf) NOx and CO (from AP-42, Chapter 13, Table 13.5-1 (NOx = 0.068 lb/mmbtu; CO = 0.37 lb/mmbtu) Emission factors for HAPS are: Benzene= (23951 Ib/yr)/208 mmscf/yr= 115.149 lb/mmscf(APEN says 0.115 lb/mscf) Toluene= (23951 Ib/yr)/208 mmscf/yr= 115.149 lb/mmscf(APEN says 0.115 lb/mscf) Ethylbenzene= (12080 Ib/yr)/94.9 mmscf/yr= 58.077 lb/mmscf(APEN says 0.058 lb/mscf) Xylenes= (12080 Ib/yr)/94.9 mmscf/yr= 58.077 lb/mmscf(APEN says 0.058 lb/mscf) n-hexane= (72063 Ib/yr)/94.9 mmscf/yr= 346.457 lb/mmscf(APEN says 0.346 lb/mscf) Operator provided a gas analysis and emissions were calculated using EPA Emission Inventory Improvement Program Publication, Volume II, Chapter 10-Displacement equation (10.4-3) where: Ex= Q * MOP 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 Emissions generated from the flare are: Division Division Noble Noble Difference? Uncontrolled Controlled Uncontrolled Controlled Total (Ib/yr) Total (lb/yr) Total (Ib/yr) Total (Ib/yr) NOx 8.9 TPY 8.9 TPY 8.9 TPY 8.9 TPY Same VOC 1214.0 60.7 1218.4 60.9 Noble 4 CO 48.4 TPY 48.4 TPY 48.4 TPY 48.4 TPY Same (no extended (no extended Noble used 23951 1198 conservative Benzene gas analysis)y ) gas analysis)y ) wt/°composition (no extended (no extended Noble used 23951 1198 conservative Toluene gas analysis) gas analysis)y ) wt/°composition (no extended (no extended Noble used 12080 604 conservative Ethylbenzene gas analysis) gas analysis) wt/°composition (no extended (no extended Noble used gas analysis) gas analysis) 12080 604 conservative Xylenes wt/°composition (no extended (no extended Noble used 72063 3603 conservative n-hexane gas analysis) gas analysis) wt/°composition (no extended (no extended Noble used 224-TMP gas analysis) gas analysis) 12080 604 conservative wt%composition Numbers are very similar to each other, but Noble's are a little higher. I am assuming that is due to a rounding issue on my side(not being able to add to the right decimal points to make the calculation). I will permit Noble's calculations as the permit emission limits. A gas analysis was provided in the application dated 10/25/2013. The gas analysis was perfomed less than a year of submittal. An updated extended gas analysis will be required since an extended gas analysis was not included in the application (just a gas analysis). Page 6 AIRS Point 003 Fugitive emissions A permit will be issued because the uncontrolled VOC emissions are greater than 2 TPY (permit threshold). A gas analysis was provided in the application dated 10/25/13. The gas analysis was perfomed less than a year of submittal. An updated extended gas analysis will be required because the operator did not provide an extended gas analysis just a gas analysis. I emailed the operator on 2/27/14 because I got slightly different emissions than what was provided in the application. I just wanted some clarification. She wrote back on 3/5/14: #1: Gas Open-ended lines: was referencing the incorrect VOC wt%, your value is correct. #2 for Pump Seals Although we had 2 as the count, our 20% conservative factor actually had 2.4. I'm ok using your value of 2 #3 for Water Other Although we had 22 as the count, our 20$conservative factor actually had 22.4, I'm ok using your value of 22 Therefore your numbers are all correct. Page 7 • _ < c = o x E.- Z ' m ❑ J v v — F 0 0 !�, N N N •! _ C R O i. I C N V\. OI OAP ` O D F '- '- _ a E' h� m M M u - C! V O G 0 .... vim- - - d _ C I ^ V ,- - -.�� - a X C C C v 0. , _ Z V g -J HUlA = O CO,. 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