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Home My WebLink About20143082.tiff A COPHE COLORADO CO _ Department of Public Health b Environment Dedicated to protecting and improving the health and environment of the people of Colorado Weld County - Clerk to the Board 1150 O St PO Box 758 Greeley, CO 80632 RC C C E 1 E L September 29, 2014 c:! n r, „Ili ti 000MMiSSiONEIRc Dear Sir or Madam: On October 2, 2014, the Air Pollution Control Division will publish a public notice for Noble Energy, Inc. - NCLP PC AA04, 06, in the The Greeley Tribune. 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 Et Environment APCD-SS-B1 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 Attention: Clara Gonzales Regards, / 7; ./. .4&. ‘.."-r-- :..L�✓ —7.._, Clara Gonzales Public Notice Coordinator i Stationary Sources Program Air Pollution Control Division Enclosure 4300 Cherry Creek Drive S., Denver, CO 80246-1530 P 303-692.2000 www.colorado.gov/cdphe7; �o,. I in �' John W. Hickenlooper,Governor I Larry Wolk,MD,MSPH, Executive Director and Chief Medical Officer .'. `'..! 7Q I7ublic2extet.3 2014-3082 )03/14 eQ%PLF' L ' (tc CDPHE Public Notice Of A Proposed Project COIA Or Activity Warranting Public Comment Website Title: Noble Energy, Inc. - NCLP PC AA04, 06 - Weld County Released To: The Greeley Tribune On: September 29, 2014 Published: October 2, 2014 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: NCLP PC M04, 06 Oil and gas exploration and production facility NWSW Section 4, T6N, R63W Weld County The proposed project or activity is as follows: Oil and gas exploration and production facility consisting of a wellhead flare and associated fugitive emissions. 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 14WE1129 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: Stephanie Chaousy 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 (t o ry 7= " STATE OF COLORADO OF_'�O_GO COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT AIR POLLUTION CONTROL DIVISION of n TELEPHONE: (303)692-3150 * R, j CONSTRUCTION PERMIT PERMIT NO: 14WE1129 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 NCLP PC AA04, 06, located in the NWSW of Section 4, 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 Flare 001 Separator controlled by a flare stack. Flare has a minimum combustion efficiency of 95%. The flare is not enclosed. Fugitive 002 Equipment leaks (fugitive VOCs) from a natural gas production 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. YOU MUST notify the Air Pollution Control Division (the Division) no later than fifteen days after issuance of this permit, by submitting a Notice of Startup form to the Division. The Notice of Startup form may be downloaded online at https://www.colorado.gov/pacific/cdphe/other-air-permitting-notices. Failure to notify the Division of startup of the permitted source is a violation of Air Quality Control Commission (AQCC) Regulation No. 3, Part B, Section III.G.1 and can result in the revocation of the permit. 2. 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). 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 within 18 AIRS ID: 123/9CEC Page 1 of 10 Wellhead Version 2012-1 DCol D men f Public PollutionHealthand Control DivisionEnvironment 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 fora 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 Emission Type Equipment ID Point NO„ VOC CO yp Flare 001 4.7 29.1 25.5 Point Fugitive 002 --- 51.8 --- 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 002: 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. 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.) AIRS ID: 123/9CEC Page 2 of 10 Col . D t men .f Public Health and Environment Air Pollution Control Division Facility AIRS Pollutants Equipment Point Control Device Controlled ID Flare 002 Separator controlled by a flare stack VOC, HAPS 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 113 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 002: 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 002: 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 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: AIRS ID: 123/9CEC Page 3 of 10 IICol D men f Public Health and Environment 11■■ Air Pollution Control Division 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. iii. 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 001: 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 17. Point 001: The owner or operator shall demonstrate compliance with opacity standards using EPA Method 22 to measure opacity from the flare. (Reference: Regulation No. 1, Section II.A.5). AIRS ID: 123/9CEC Page 4 of 10 Col . D�menf Public Health and Environment YH^1.I. Air Pollution Control Division 18. Points 001 and 002: Within one hundred and eighty days (180)after issuance of this permit, the owner or operator shall complete the initial extended gas analysis of gas samples that are representative of volatile organic compound (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. The operator shall submit the results of the gas analysis and emission calculations to the Division as part of the self-certification process to ensure compliance with emissions limits. 19. Point 002: 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 20. Point 001: 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. 21. Point 002: 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 22. 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. 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)shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit AIRS ID: 123/9CEC Page 5 of 10 DI Col.A • Dc-■y/men f Public Health and Environment 11�� Air Pollution Control Division 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 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. 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 at)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. 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. AIRS ID: 123/9CEC Page 6 of 10 'µ X :tiP: iti#1tt4��. 'Y4&L Col . D4 Omen f (,Public Health and Environment II Air Pollution Control Division By: Stephanie Chaousy, PE Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Noble Energy, Inc. Newly permitted wellhead flare and fugitive emissions at a synthetic minor facility. AIRS ID: 123/9CEC Page 7 of 10 I IColl. • D 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: https://www.colorado.gov/pacific/cdphe/acicc-regs 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 (Ib/yr) reportable? Rate(Ib/yr) Benzene 71432 A 6322 Yes 316 Toluene 108883 C 6322 Yes 316 Ethylbenzene 100414 C 3161 Yes 158 001 Xylenes 1130207 C 3161 Yes 158 n-Hexane 110543 C 18965 Yes 948 2,2,4- 540841 C 3161 Yes 158 Trimethylpentane 5) The emission levels contained in this permit are based on the following emission factors: Point 001: Weight Emission Emission CAS# Pollutant Fraction of Factors Factors Source Gas(%) Uncontrolled Controlled NOx 0.068 0.068 AP-42 lb/MMBtu lb/MMBtu CO 0.37 AP-42 0.37 lb/MMBtu lb/MMBtu VOC 18A5 10290.2655 514.5133 Engineering lb/mmscf lb/mmscf Calculation 71432 Benzene 0.10 55.9469 2.7973 Engineering Ib/mmscf lb/mmscf Calculation 108883 Toluene 0.10 55.9469 2.7973 Engineering Ib/mmscf Ib/mmscf Calculation AIRS ID: 123/9CEC Page 8 of 10 rCol,i • D- men if Public Health and Environment w Air Pollution Control Division Weight Emission Emission CAS# Pollutant Fraction of Factors Factors Source Gas (%) Uncontrolled Controlled 100414 Ethylbenzene 0.05 27.9735 1.3988 Engineering Ib/mmscf lb/mmscf Calculation 1330207 Xylenes 0.05 27.9735 1.3988 Engineering lb/mmscf lb/mmscf Calculation 110543 n-hexane 0.30 167.8319 8.3916 Engineering lb/mmscf lb/mmscf Calculation Note: The uncontrolled VOC and HAP emissions for this point were calculated using the average of five gas analyses of gas samples collected from the NCLP wells. The controlled VOC and HAP emissions factors for point 002 are based on the flare control efficiency of 95%. Point 002: Component Gas Service Heavy Oil Light Oil Water/Oil Service Connectors 1727 --- 1027 496 Flanges 338 --- 262 11 Open-Ended Lines 3 --- --- --- Pump Seals --- --- 2 --- Valves 933 --- 1162 168 Other 256 --- 70 22 VOC Content(wt%) 21.38% 100% 29.2% 100% Benzene Content(wt%) --- --- --- --- Toluene Content(wt%) --- --- --- --- Ethylbenzene (wt%) --- --- --- Xylenes Content(wt%) --- --- --- n-hexane Content(wt%) --- --- --- --- *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): Component Gas Service Heavy Oil Light Oil ervi S Water/Oil 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 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 most recent gas analysis. AIRS ID: 123/9CEC Page 9 of 10 D Col D men f Pu and Airblic PollutionHealth ControlEnvironment Division 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, total HAPS 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://ecfr.gpoaccess.gov/ 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 SubpartA—SubpartZ 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) 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.00vioacific/cdphe/air-permit-self-certification • AIRS ID: 123/9CEC Page 10 of 10 Produced Natural Gas Venting/Flaring Preliminary Analysis Colorado Department of Public Health and Environment Air Pollution Control Division Division Information Engineer: Stephanie Chaousy, PE Attainment Status Control Engineer: Chris Laplante! PM10 Attainment Review Date: 09/11/2014 PM2.5 Attainment Application Date: 06/27/2014 SOx Attainment NOx Nonattainmen VOC Nonattainmen Facility Information CO Attainment Permit No. 14WE1129 County# 123 Weld AIRs Facility# 9CEC Point# 001 Facility Equipment ID Flare Company Name: Noble Energy Inc. Source Name: NCLP PC AA04,06 NWSW Section 4,T6N, R63W Source Location: SIC: 1311 Elevation(feet)4800 New Permit Modification APEN X (CPI) (Issuance#) Required/Permit Exempt Transfer of APEN Ownership Exempt/Permit Fxemot Notes Equipment Description This source vents natural gas from: a well head separator Emissions from this source are: routed to an enclosed flare Natural gas venting from a well head separator.Emissions from this source are routed to an enclosed flare. • 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 O=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/Ib-mol)at 60F and 1 atm Throughput(0) 113 MMscf/yr I 12899.5 scf/hr I 9.60 MMsct/mo MW 21.180 Ib/Ib-mot 0.003 MMscf/d mole% MW Ibx/lbmol mass fraction E lb/hr lb/yr tpy Helium 0 4.0026 0.000 0.000 Helium 0.0 0 0.00 CO2 2.2856 44.01 1.006 0.047 CO2 34.2 299910 149.95 N2 0.5698 28.013 0.160 0.008 N2 5.4 47591 23.80 methane 77.1756 16.041 12.380 0.585 methane 421.4 3691056 1845.53 ethane 12.391 30.063 3.725 0.176 ethane 126.8 1110652 555.33 propane 5.24 44.092 2.3104 0.109 propane 78.6 688859 34443 isobutane 0.4558 58.118 0.2649 0.013 isobutane 9.0 78981 39.49 n-butane 1.2018 58.118 u.b985 0.033 n-butane i 23.8 295249 11)4.1/ isopentane 0.201 72.114 0.1449 0.007 isopentane 4.9 43217 21.61 n-pentane 0.2482 72.114 0.1790 0.008 n-pentane 6.1 54366 26.68 cyclopentane 0 70.13 0.0000 0.000 cyclopentane 0.0 0 0.00 n-Hexane 0.0000 86.18 0.0000 0.000 n-Hexane 0.0 0 0.00 cyclohexane 0.0000 84.16 0.0000 0.000 cyclohexane 0.0 0 0.00 Other hexanes 0 86.18 0.0000 0.000 Other hexanes 0.0 0 0.00 heptanes 0 100.21 0.0000 0.000 heptanes 0.0 0 0.00 methylcyclohexane 0 98.19 0.0000 0.000 methylcyclohexane 0.0 0 0.00 224-TMP 0 114.23 0.0000 0000 224-TMP - 0.0 0 0.00 Benzene 0 78.12 0.0000 0.000 Benzene 0.0 0 0.00 Toluene 0 92.15 0.0000 0.000 Toluene 0.0 0 0.00 Ethylbenzene 0 106.17 0.0000 0.000 Ethylbenzene 0.0 0 0.00 Xylenes 0 106.17 0.0000 0.000 Xylenes 0.0 0 0.00 Produced Natural Gas Venting/Flaring Preliminary Analysis Colorado Department of Public Health and Environment Air Pollution Control Division IC8+Heavies 0.23121 134.915( 0.3119 I 0.015 IC8+Heavies I 10.6 I 93001 46.50 VOC mass fraction: 0.1846 Total VOC Emissions(Uncontrolled) 582.8 21.180 annual limit assuming 95%control 29.1 Notes monthly limit assuming 95%control(lb/mo.) 4950.1 Mole%,MW,and mass fractions from an average of 5 gas analyses from NCLP PC AA 04-67-1HN Emissions are based on 8760 hours of operation per year. Division's emissions are a little off,but I believe that is due to rounding and how the operator rounded during calculations versus how the Division rounded. Controlled emissions are the same,so I will use operators uncontrolled VOC emissions of 581.4 TPY Flaring Information Equipment Description Flare to combust produced gas until pipeline is available at this wellhead facility. Manufacturer TBD Model TBD Serial Number TBD Gas Heating Value _ 1222 Btu/scf Throughput 138086 MMBtu/yr Combustion emission factor source: AP-42:Chapter 13.5 0.068 lb NOX/MMBtu 0.37 lb CO/MMBtu 4.69 tpy NOX 25.55 tpy CO Emissions Summary 4.69 tpy NOX Uncontrolled/PTE 25.55 tpy CO 582.836 toy VOC Controlled 29.142 tpy VOC Will require an extended gas analysis in the permit issuance to calculate HAP spedation. Operator calculated BAPS based on conservative calculations from similar facilties. VOC=18.45% Uncontrolle Emission d Total Scenario A Controlled factor WT% (lblyr) Bin Reportable? Total(lb/yr) Iblmmscf Benzene 0.1 6322 A Yes 316 55.9469 Toluene 0.1 6322 C Yes 316 55.9469 Ethylbenzene 0.05 3161 C Yes 158 27.9735 Xylenes 0.05 3161 C Yes 158 27.9735 n-hexane 0.3 18965 C Yes 948 167.8319 224-TMP 0.05 3161 C Yes 158 27.9735 Regulatory Applicability 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."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 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 Regulation 3 An APEN is required for this source because uncontrolled VOC emissions Part A: exceed one ton per year in a nonattainment area for ozone. A permit is required for this source because uncontrolled VOC emissions from this facility exceed two tons per year in a nonattainment area for ozone. Part B: This source is subject to Section III.D.2(Minor Source RACT)because it is located in a nonattainment area.RACT for this source has been determined to be the use of a flare to control emissions. 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