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Home My WebLink About20161652.tiff ' P CI? HE COLORADO + y<, Co .O Department of Public -• Health b Environment Dedicated to protecting and improving the health and environment of the people of Colorado RECEIVED Weld County - Clerk to the Board MAY 1 9 MS 1150 O St PO Box WELD COUNTY PO 758 COMMISSIONERS Greeley, CO 80632 May 16, 2016 Dear Sir or Madam: On May 18, 2016, the Air Pollution Control Division will begin a 30-day public notice period for Carrizo Oil Et Gas, Inc. - Hemberger 4-26 Multi-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, 7) ./ i Clara Gonzales Public Notice Coordinator Stationary Sources Program Air Pollution Control Division Enclosure 2016-1652 4300 Cherry Creek Drive S., Denver, CO 80246-1530 P 303-692-2000 www.colorado.govicdphe . John W. Hickenlooper, Governor I Larry Wolk,MD,MSPH, Executive Director and Chief Medical Officer 'a ,'. ("(.19/C. .-P-Aiiti.4) V"" :' 46--1 eix)' di" go -C. .�O2 /6 CDPHE Air Pollution Control Division Notice of a Proposed Project or Activity. Warranting Public CO ' Comment Website Title: Carrizo Oil Et Gas, Inc. - Hemberger 4-26 Multi-pad - Weld County Notice Period Begins: May 18, 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: Carrizo Oil Et Gas, Inc. Facility: Hemberger 4-26 Multi-pad Oil and gas well production facility SESE of Section 26 of T8N R60W Weld County The proposed project or activity is as follows: Applicant proposes to construct and operate an oil Et gas well production facility, including crude oil storage, produced water storage, loadout of crude oil to tank trucks, and flaring of gas when the sales gas pipeline is not available. 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): • the source is requesting a federally enforceable limit on the potential to emit in order to avoid other requirements • permitted emissions exceed public notice threshold values in Regulation No. 3, Part B, Section III.C.1.a (i.e., 25 tpy in a non-attainment area) 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 Permits 16WE0222, 16WE0224, and 16WE0225 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: Andy Gruel Colorado Department of Public Health and Environment 4300 Cherry Creek Drive South, APCD-SS-B1 Denver, Colorado 80246-1530 cdphe.commentsapcd@state.co.us LRA 1 I _`". C C_O O szc R v+DO:. ;vaa,h s amnnwK.,a*i CDPHE Construction Permit CO 1 Air Pollution Control Division Permit number: 16WE0222 Issuance: 1 Date issued: Issued to: Carrizo Oil & Gas, Inc. Facility Name: Hemberger 4-26 Multi-Pad Plant AIRS ID: 123-9E23 Physical Location: SESE of Section 26 of T8N R60W County: Weld County General Description: Well Production Facility Equipment or activity subject to this permit: Facility AIRS Emissions Control Equipment Point Equipment Description Description ID TANKS 002 Thirteen (13) 400-barrel fixed roof storage Enclosed Flare vessels used to store crude oil. 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 the specific 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 of the latter of commencement of operation or issuance of this permit, by submitting a Notice of Startup form to the Division for the equipment covered by this permit. The Notice of Startup form may be downloaded online at 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 Number 3, Part B, Section III.G.1. and can result in the revocation of the permit. 2. Within one hundred and eighty days (180) of the latter of commencement of operation or 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. A self certification form and guidance on how to self-certify compliance as required by this permit may be obtained online at www.colorado.gov/pacific/cdphe/air-permit-self-certification. (Regulation Number 3, Part B, Section 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 months Storage Tank Version Syn Minor 2015-1 Page 1 of 8 A h- t da o ssuancz of this construction permit or the date on which such onst . on • .cti ' sche. -d 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. (Regulation Number 3, Part B, Section 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. (Regulation Number 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. (Regulation Number 3, Part B, Section II.A.4.) Annual Limits: Facility AIRS Tons per Year Emission Equipment ID Point PM2.5 NO„ VOC CO Type TANKS 002 --- --- 9.8 --- Point Note: 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 not exceed 8.0 tons per year. Facility-wide emissions of total hazardous air pollutants shall not exceed 20.0 tons per year. The facility-wide emissions limitation for hazardous air pollutants shall apply to all permitted emission units at this facility. Compliance with the annual limits, for both criteria and hazardous air pollutants, 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 actual emissions each month and keep a compliance record on site or at a local field office with site responsibility for Division review. 7. The emission points in the table below shall be operated and maintained with the emissions control equipment as listed in order to reduce emissions to less than or equal to the limits established in this permit. (Regulation Number 3, Part B, Section III.E.) Facility AIRS Control Device Pollutants Equipment ID Point Controlled TANKS 002 Enclosed Flare VOC and HAP 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. (Regulation Number 3, Part B, II.A.4.) ` LDANE COLORADO CO ' Air Pollution Control Division ., f''J fee'>>u<r»,,'n, Page 2 of 8 es s Facility AIRS Process Parameter Annual Limit Equipment ID Point TANKS 002 Crude Oil throughput 107,369 barrels 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 9. The permit number and ten digit AIRS ID number assigned by the Division (i.e., 123/9E23/002) shall be marked on the subject equipment for ease of identification. (Regulation Number 3, Part B, Section III.E.) (State only enforceable) 10. This source is subject to the odor requirements of Regulation Number 2. (State only enforceable) 11. The combustion device covered by this permit is subject to Regulation Number 7, Section XVII.B.2. General Provisions (State only enforceable). If a flare or other combustion device is used to control emissions 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 flare or combustion device, or by other convenient means approved by the Division, determine whether it is operating properly. This flare must be equipped with an operational auto-igniter according to the following schedule: • All combustion devices installed on or after May 1, 2014, must be equipped with an operational auto-igniter upon installation of the combustion device; • All combustion devices installed before May 1, 2014, must be equipped with an operational auto-igniter by or before May 1, 2016, or after the next combustion device planned shutdown, whichever comes first. 12. The storage tank covered by this permit is subject to the emission control requirements in Regulation Number 7, Section XVII.C.1. The owner or operator shall install and operate 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 except where the combustion device has been authorized by permit prior to May 1, 2014. The source shall follow the inspection requirements of Regulation Number 7, Section XVII.C.1.d. and maintain records of the inspections for a period of two years, made available to the Division upon request. This control requirement must be met within 90 days of the date that the storage tank commences operation. 13. The storage tanks covered by this permit are subject to the venting and Storage Tank Emission Management System ("STEM") requirements of Regulation Number 7, Section XVII.C.2. OPERATING & MAINTENANCE REQUIREMENTS 14. Upon startup of these points, the owner or operator shall follow the most recent operating and maintenance (OEtM) 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 the OEtM plan are subject to Division approval prior to implementation. (Regulation Number 3, Part B, Section III.G.7.) covw� COLORADO CO Air Pollution Control Dunstan s_ r J1,r ,, 1'0:17.2',1L Page 3 of 8 COM 10 G D PG Initial Testing Requirements 15. The owner or operator shall demonstrate compliance with opacity standards, using EPA Reference Method 22, 40 C.F.R. Part 60, Appendix A, to determine the presence or absence of visible emissions. "Visible Emissions" means observations of smoke for any period or periods of duration greater than or equal to one minute in any fifteen minute period during normal operation. (Regulation Number 7, Sections XVII.B.2. and XVII.A.16) Periodic Testing Requirements 16. This source is not required to conduct periodic testing, unless otherwise directed by the Division or other state or federal requirement. ADDITIONAL REQUIREMENTS 17. A revised Air Pollutant Emission Notice (APEN) shall be filed: (Regulation Number 3, Part A, II.C.) • Annually by April 30`h 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 (NOr) in ozone nonattainment areas emitting less than 100 tons of VOC or NO, 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 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. • Whenever there is a change in the owner or operator of any facility, process, or activity; or • Whenever new control equipment is installed, or whenever a different type of control equipment replaces an existing type of control equipment; or • Whenever a permit limitation must be modified; or • No later than 30 days before the existing APEN expires. 18. 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 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 Number 3, Parts C and D). 19. MACT Subpart HH - National Emission Standards for Hazardous Air Pollutants From Oil and Natural Gas Production Facilities major stationary source requirements shall apply to this stationary source at any such time that this stationary source becomes major solely by virtue of CDPHE COLORADO CO ; Air Pollution Control Division f ,,; ,.,�.;.1'aL* Fie ,;,_ ko,r:_,. Page 4 of 8 -la ti in any er t limit on and shall be subject to all appropriate applicable equi n b . (Reg ' - :n Number 8, Part E, Subpart HH) GENERAL TERMS AND CONDITIONS 20. 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 Number 3, Part B, Section II.B. upon a request for transfer of ownership and the submittal of a revised APEN and the required fee. 21. 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 Number 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. 22. 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. 23. 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. 24. 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 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. 25. 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. 26. 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: Andy Gruel, P.E. Permit Engineer 4 or ce COLORADO er CO ' An Pollution Control Division ��;• ,�• A 1 le_i°,- ,,nt Page 5 of 8 Permit History Issuance Date Description Issuance 1 This Issuance Issued to Carrizo Oil Et Gas, Inc. Newly permitted synthetic minor facility. 4 CA COLORADO eO Air Pollution Control Division aiezP Aao„rnt. Page 6 of 8 . ,_., Not •m 'a r • I th this.- it issuance: 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. (Regulation Number 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: https://www.colorado.gov/pacific/cdphe/aqcc-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. AIRS Uncontrolled Controlled Point Pollutant CAS# Emissions Emissions (Ib/yr) (Ib/yr) Benzene 71432 2871 144 Toluene 108883 2615 131 Ethylbenzene 100414 238 12 002 Xylenes 1130207 970 49 n-Hexane 110543 17,362 868 2,2,4- 540841 1020 51 Trimethylpentane Note: All non-criteria reportable pollutants in the table above with uncontrolled emission rates above 250 pounds per year (lb/yr) are reportable and may result in annual emission fees based on the most recent Air Pollution Emission Notice. 5) The emission levels contained in this permit are based on the following emission factors: Point 002: Uncontrolled Controlled CAS# Pollutant Emission Factors Emission Factors Source lb/bbl lb/bbl V0C 3.616 0.181 EEtP Tanks 71432 Benzene 0.0267 0.00134 EEtP Tanks 108883 Toluene 0.0244 0.00122 EEtP Tanks 100414 Ethylbenzene 0.00222 0.00011 EEtP Tanks 1330207 Xylene 0.00903 0.000452 E&P Tanks 110543 n-Hexane 0.1617 0.008087 EEtP Tanks 540841 2'2'4 0.0095 0.000475 EEtP Tanks Trimethylpentane Note: The controlled emissions factors for this point are based on the flare control efficiency of 95%. COP E COLORADO CO ' Air Pollution Control Bivz..iau el:; ..h shabw file.i ,,r:_he Page 7 of 8 I III A 6) I SW pa e , h r R.S. '5- 14.1, e h Air Pollutant Emission Notice (APEN) associated with perm a • •` a • "'"ive y- 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 permit fulfills the requirement to hold a valid permit reflecting the storage tank and associated control device per the Colorado Oil and Gas Conservation Commission rule 805b(2)(A) when applicable. 8) This facility is classified as follows: Applicable Status Requirement Operating Permit Synthetic Minor source of: VOC, HAP (total, and n-hexane) NANSR Synthetic Minor source of: VOC MACT HH Area Source Requirements: Not Applicable 9) 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 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 CDPHE COLORADO cO If Air Pollution Control Division „ :-t ,e.:.,+: =r umr•=enc Page 8 of 8 STATE OF COLORADO ov cow COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT AIR POLLUTION CONTROL DIVISION �e ' TELEPHONE: (303) 692-3150 * `t w I870 CONSTRUCTION PERMIT PERMIT NO: 1 6 YY E0224 Issuance 1 DATE ISSUED: & ISSUED TO: Carrizo Oil Gas, Inc. THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS: Oil and gas facility, known as Hemberger 4-26 Multi-Pad, located in the SESE of Section 26 of Township 8N Range 60W, in Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Equipment Point Description ID LOAD 004 Truck loadout of crude oil. Emissions from the loadout are not controlled. 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 of the latter of commencement of operation or 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- permittinq-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) of the latter of commencement of operation or 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 AIRS ID: 123/9E23/004 Page 1 of 8 Coll do p e o Public Health and Environment Air Pollution Control Division 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 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 5. 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 Point Emission Type ID VOC LOAD 004 5.5 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. PROCESS LIMITATIONS AND RECORDS 6. This source shall be limited to the following maximum processing rates as listed below. Monthly records of the actual processing rate 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) AIRS ID: 123/9E23/004 Page 2 of 8 Co i do pp . £' e o Public Health and Environment � a5 Air Pollution Control Division Process/Consumption Limits AIRS Process Parameter Annual Limit Point 004 Crude Oil Loading 107,369 BBL 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 7. 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. Emission control devices subject to Regulation 7, Sections XII.C.1.d or XVII.B.1.c shall have no visible emissions. (Reference: Regulation No. 1, Section II.A.1. & 4.) 8. 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. Crude oil loading to truck tanks shall be conducted by submerged fill. (Reference: Regulation 3, Part B, III.E) 9. This source is subject to the odor requirements of Regulation No. 2. (State only enforceable) 10. 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.D.2): 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 at the facility (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 onsite loading equipment during loading operations to monitor compliance with above conditions. The inspections shall occur at least monthly. Each inspection shall be documented in a log available to the Division on request. 11. 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. AIRS ID: 123/9E23/004 Page 3 of 8 Co do p e o Public Health and Environment Air Pollution Control Division OPERATING & MAINTENANCE REQUIREMENTS 12. This source is not required to follow a Division-approved operating and maintenance plan. COMPLIANCE TESTING AND SAMPLING 13. This source is not required to comply with any testing and sampling requirements. ADDITIONAL REQUIREMENTS 14. A revised Air Pollutant Emission Notice (APEN) shall be filed: (Reference: Regulation No. 3, Part A, II.C) a. Annually by April 3e 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 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. 15. 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 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). AIRS ID: 123/9E231004 Page 4 of 8 Co iado Bp e o Public Health and Environment Air Pollution Control Division GENERAL TERMS AND CONDITIONS 16. 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. 17. 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. 18. 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. 19. 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. 20. 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 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. 21. 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. AIRS ID: 12319E23/004 Page 5 of 8 • '; Co do • p e o Public Health and Environment Air Pollution Control Division 22. 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: Andy Gruel, P.E. Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Carizzo Oil & Gas, Inc. Newly permitted synthetic minor facility. ID: 12319E231004 Pa e 6 of 8 AIRS g IP Co do a p e o Public Health and Environment Air Pollution Control Division �t ... Notes to Permit Holder at the time of this permit issuance: 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: https://www.colorado.gov/pacific/cdphe/aqcc-reqs 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# (lb/yr) reportable? Rate(lb/yr) n-Hexane 110543 483.6 Yes N/A 004 Benzene 71432 80.0 No N/A Toluene 108883 72.8 No N/A 5) The emission levels contained in this permit are based on the following emission factors: Emission Factors - Uncontrolled CAS Pollutant lb/BBL loaded Source VOC 0.10078 AP-42 110543 n-Hexane 0.0045 Eng. Calc. 71432 Benzene 0.000745 Eng. Calc. 108883 Toluene 0.00068 Eng. Calc. 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*M/T S = 0.6 (Submerged loading: dedicated normal service) P (true vapor pressure) = 3.4 psia M (vapor molecular weight) = 50 Ib/Ib-mol T(temperature of liquid loaded) = 529.67 °R AIRS ID: 123/9E23/004 Page 7 of 8 Co do ' 'p e o Public Health and Environment Air Pollution Control Division The uncontrolled non-criteria reportable air pollutant (NCRP) emission factors were calculated by multiplying the mass fraction of each NCRP in the vapors by the VOC emission factor. 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, HAPs (total, and n-hexane) NANSR Synthetic Minor source of: VOC 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 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) 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.gov/pacific/cdphe/air-permit-self-certification AIRS ID: 123/9E23/004 Page 8 of 8 i STATE OF COLORADO COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT iy� I AIR POLLUTION CONTROL DIVISION TELEPHONE: (303)692-3150 *t * CONSTRUCTION PERMIT PERMIT NO: 16WE0225 Issuance 1 DATE ISSUED: ISSUED TO: Carrizo Oil & Gas, Inc. THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS: Oil and gas production facility, known as Hemberger 4-26 Multi-pad, located in the SESE of Section 26 of Township 8N Range 60W, in Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Equipment Point Description ID One (1) flare (Manufacturer: Leed, Model: 25', Serial No: 80366) SEPARATOR 005 used to combust produced gas from three (3) separators during sales pipeline downtime situations. This is an open flare. 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 of the latter of commencement of operation or issuance of this permit, l y submitting a Notice of Startup form to the Division for the equipment covered by this permit. The Notice of Startup form may be downloaded online at 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 Number 3, Part B, Section III.G.1. and can result in the revocation of the permit. 2. Within one hundred and eighty days (180) of the latter of commencement of operation or 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. A self certification form and guidance on how to self- certify compliance as required by this permit may be obtained online at AIRS ID: 123/9E23 Page 1 of 9 Condensate Tank Version 2009-1 Colorado Department of Public Health and Environment Air Pollution Control Division www.colorado.gov/pacific/cdphe/air-permit-self-certification. (Regulation Number 3, Part B, Section 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 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. (Regulation Number 3, Part B, Section 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. (Regulation Number 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. (Regulation No. 3, Part B, Section II.A.4) Annual Limits: Facility AIRS Tons per Year Equipment ID Point NO, VOC CO Emission Type SEPARATOR 005 6.2 58.6 33.3 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 not exceed 8.0 tons per year. Facility-wide emissions of total hazardous air pollutants shall not exceed 20.0 tons per year. The facility-wide emissions limitation for hazardous air pollutants shall apply to all permitted emission units at this facility. Compliance with the annual limits, for both criteria and hazardous air pollutants, 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 actual emissions each month and keep a compliance record on site or at a local field office with site responsibility for Division review. 7. The emission points in the table below shall be operated and maintained with the emissions control equipment as listed in order to reduce emissions to less than or equal to the limits established in this permit. (Regulation No.3, Part B, Section III.E.) AIRS ID: 123/9E23 Page 2 of 9 Colorado Department of Public Health and Environment Air Pollution Control Division Facility AIRS Control Device Pollutants Equipment ID Point Controlled SEPARATOR 005 Open flare VOC, HAP 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 Limits Facility AIRS Process Parameter Annual Limit Equipment ID Point SEPARATOR 005 Natural gas flaring 140.6 MMscf Compliance with the annual process 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. The owner or operator shall continuously monitor and record the volumetric flow rate of natural gas vented from each of the separators using a flow meter. The flow meter shall continuously measure flow rate and record total volumetric flow vented from each separator. The owner or operator shall use monthly throughput records to demonstrate compliance with the process limits contained in this permit and to calculate emissions as described in this permit. STATE AND FEDERAL REGULATORY REQUIREMENTS 10. The permit number and ten-digit AIRS ID number assigned by the Division (i.e,. 123- 9E23-005) shall be marked on the subject equipment for ease of identification. (Regulation Number 3, Part B, III.E.) (State only enforceable) 11. This source is subject to the odor requirements of Regulation No. 2. (State only enforceable) 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. The open flare at this point 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 according to the following schedule: AIRS ID: 123/9E23 Page 3 of 9 Colorado Department of Public Health and Environment Air Pollution Control Division • All combustion devices installed on or after May 1, 2014, must be equipped with an operational auto-igniter upon installation of the combustion device; • All combustion devices installed before May 1, 2014, must be equipped with an operational auto-igniter by or before May 1, 2016, or after the next combustion device planned shutdown, whichever comes first. OPERATING & MAINTENANCE REQUIREMENTS 14. Upon startup of this point, 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 the O&M plan are subject to Division approval prior to implementation. (Regulation Number 3, Part B, Section III.G.7.) COMPLIANCE TESTING AND SAMPLING Initial Testing Requirements 15. The owner or operator shall demonstrate compliance with opacity standards, using EPA Reference Method 22, 40 C.F.R. Part 60, Appendix A, to determine the presence or absence of visible emissions. "Visible Emissions" means observations of smoke for any period or periods of duration greater than or equal to one minute in any fifteen minute period during normal operation. (Regulation Number 7, Sections XVII.B.2. and XVII.A.16) ADDITIONAL REQUIREMENTS 16. 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 volatile organic compounds (VOC) and nitrogen oxides sources (NOr) in ozone nonattainment areas emitting less than 100 tons of VOC or NO, 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 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 AIRS ID: 123/9E23 Page 4 of 9 Colorado Department of Public Health and Environment Air Pollution Control Division d. Whenever a permit limitation must be modified; or e. No later than 30 days before the existing APEN expires. 17. 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 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 Parts C and D). GENERAL TERMS AND CONDITIONS 18. 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. 19. 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. 20. 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. 21. 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. 22. 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. 23. 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 AIRS ID: 123/9E23 Page 5 of 9 Colorado Department of Public Health and Environment Air Pollution Control Division Division in writing requesting a cancellation of the permit. Upon notification, annual fee billing will terminate. 24. 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: Andy Gruel, P.E. Permit Engineer Air Pollution Control Division Permit History Issuance Date Description Issuance 1 This Issuance Issued to Carrizo Oil & Gas, Inc. Newly permitted synthetic minor facility. AIRS ID: 123/9E23 • Page 6 of 9 Colorado Department of 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 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: https://www.colorado.gov/pacific/cdphe/aqcc-reqs 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 Controlled Emission Are the Emission AIRS Rate emissions Rate Point Pollutant CAS# (Ib/yr) reportable? (Ib/yr) Benzene 71432 4,284 Yes 215 Toluene 108883 2,724 Yes 137 005 Ethylbenzene 100414 298 Yes 15 Xylenes 1330207 803 Yes 40 n-Hexane 110543 26,690 Yes 1,435 AIRS ID: 123/9E23 Page 7 of 9 Colorado Department of Public Health and Environment Air Pollution Control Division 5) The emission levels contained in this permit are based on the following emission factors: Point 005: Natural Gas Emission Emission Composition Factors Factors CAS# Pollutant (Weight%) Uncontrolled Controlled Source lb/MMscf lb/MMscf natural gas natural gas vented vented NOx --- ___ 86.92 AP-42, Table 13.5-1, 1278.2 Btu/scf CO --- --- 472.93 AP-42, Table 13.5-2 1278.2 Btu/scf VOC 27.49 % 16,671.3 834 Mass Balance 71432 Benzene 0.0493% 30.470 1.5235 Mass Balance 108883 Toluene 0.0315% 19.375 0.9688 Mass Balance 100414 Ethylbenzene 0.0034 % 2.117 0.1059 Mass Balance 1330207 Xylenes 0.0092 % 5.707 0.2854 Mass Balance 110543 n-Hexane 0.3305% 204.05 10.2024 Mass Balance The uncontrolled VOC and HAP emissions for this point were calculated by applying a mass balance on the weighted average of analyses of site-specific gas samples collected 12/8/2015 and 1/15/2016 from the three separators at the facility, and the following assumptions: • Gas flowrate to flare: 841.2 Mscf/d (based on first 30 days of production) • Limit 4000 hours per year of gas to flare, total from all separators • Pilot gas: 50 scf/hr, for 8760 hr/yr • Permit limit 140.6 MMscf/yr calculated by: [841.2 Mscf/d * (1 MMscf/ 1000 Mscf) * 365 d/yr* 4000 hr/yr * (1 yr / 8760 hr) ] + [(50 scf/hr * (1 MMscf / 106 scf) * 8760 hr/yr)] = 140.6 MMscf/yr The controlled VOC and HAP emissions factors for point 005 are based on the flare control efficiency of 95%. 6) In accordance with C.R.S. 25-7-114.1, each Air Pollutant Emission Notice (APEN) associated with 4 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, HAPs (total, and n-hexane) 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: AIRS ID: 123/9E23 Page 8 of 9 Colorado Department of Public Health and Environment Air Pollution Control Division 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 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) 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.gov/pacific/cdphe/air-permit-self-certification AIRS ID: 123/9E23 Page 9 of 9 Construction Permit Application Preliminary Analysis Summary Section 1 —Applicant Information Company Name: Carrizo Oil &Gas, Inc. 16WE0222 (Point 002) Permit Number: 16WE0223.XP(Point 003) 16WE0224(Point 004) 16WE0225(Point 005) Source Location: SESE Section 26 T8N R60W Point 002: Thirteen (13)400-BBL aboveground atmospheric crude oil storage vessels. Emissions are controlled by enclosed flare. Point 003: Three(3)400-BBL aboveground atmospheric produced water Equipment Description: storage vessels. Emissions are controlled by enclosed flare. Point 004: Loadout of crude oil to tank trucks. Emissions are not controlled. Point 005: Separator venting and flaring when sales gas pipeline is not available. AIRS ID: 123-9E23 Date: 04/05/2016 Review Engineer: Andy Gruel Control Engineer: Stefanie Rucker Section 2—Action Completed Grandfathered Modification 003nt APEN Required/Permit Exempt x CP1 Transfer of Ownership APEN Exempt/Permit Exempt *If tank is a true minor source at a true minor facility, it shall be granted"Final Approval" 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? Yes X 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 4/5/16, 4/6/16 Information Request letter to the source? Initial application rec'd 1/15/2016. On 4/5/2016 I requested Alternative Emissions Control On what date was this application complete? Device Request Form for open flare at point 005. On 4/6/16 I received revised calcs for all points based on additional sampling. Page 1 law Section 4—Source Description AIRS Point Equipment Description Crude oil Thirteen (13)400-bbl fixed roof atmospheric crude oil storage vessels,with total tank(002) capacity 5,200-bbl. Emissions are controlled by enclosed flare Produced Three(3)400-BBL aboveground atmospheric produced water storage vessels. Water tank Emissions are controlled by enclosed flare. (003) Truck loadout Loadout of crude oil to tank trucks. Emissions are not controlled. (004) Flare/ Separator venting and flaring when sales gas pipeline is not available. This is an Separator open flare(Leed,sn: 80366)with a minimum control efficiency of 95%. (005) Is this a portable source? Yes X No Is this location in a non-attainment area for any criteria 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) Point 003 (Produced water): Is this source claiming exempt status for this source based on the fraction of oil in the stored water(less than 1% by volume crude X Yes No oil on an average annual basis)? If yes, PERMIT exempt per Regulation 3, Part B, Section II.D.1.m) Point 004(Loadout): Is this source located at an oil X Yes No and gas exploration site? Point 004(Loadout): If yes, does this source load less than 10,000 gallons of crude oil per day on an annual average, splash fill less than 6750 bbl of Yes X No condensate (hydrocarbons that have an API gravity of 40 degrees or greater) per year or submerged fill less than 16,308 bbl of condensate per year? Point 004(Loadout): Is this source located at a facility that is considered a major source of hazardous air Yes X No pollutant (HAP) emissions? Point 004(Loadout): Will this equipment be operated in any NAAQS nonattainment area? If yes, source X Yes No might be subject to Reg. 3, Part B, Section III.D.2. Point 004(Loadout): Does this source load gasoline Yes X No into transport vehicles? Section 5—Emission Estimate Information AIRS Point Emission Factor Source Crude oil tank Site-specific using E&P Tanks (Refer to Section 14 for calculations) (002) Produced Weld County default emission factors for produced water(PS Memo 09-02) water(003) AP-42: Chapter 5.2, Equation 1 Truck loadout L = 12.46*S"P*MIT (004) L = loading losses in lb per 1000 gallons loaded Page 2 S = Saturation Factor P=true vapor pressure of liquid loaded [psia] M = molecular weight of vapors [lb/lb-mole] T=temperature of bulk liquid loaded [deg. R] Separator/Flare Mass balance using sales gas analysis and Displacement Equation (see Section (005) 14 for calculations) 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 Crude oil tank 107,369 bbl/yr (002) Produced water tank 58,231 bbl/yr (003) Truck loadout 107,369 bbl/yr (004) Separator/Flare 140.6 MMscf/yr (005) Basis for Actual Emissions Reported During this APEN Filing (Reported to Inventory) AIRS Point Process Consumption/Throughput/Production Data Year Crude oil tank No actual throughput data provided N/A (002) Produced water tank 58,231 bbl/yr 2015 (003) Truck loadout No actual emissions data provided N/A (004) Separator/Flare No actual emissions data provided N/A (005) Basis for Permitted Emissions(Permit Limits) AIRS Point Process Consumption/Throughput/Production Crude oil tank 107,369 bbl/yr (002) Produced water tank N/A—Permit Exempt (003) Truck loadout 107,369 bbl/yr (004) Separator/Flare 140.6 MMscf/yr (005) Does this facility use control devices? X Yes No AIRS Point Process Control Device Description % Reduction Granted Crude oil tank 01 Leed enclosed flare 95 (002) Produced 01 Leed enclosed flare 95 water(003) Separator/Flare 01 Leed open flare,sn: 80366 95 (005) Page 3 Section 6—Emission Summary (tons per year) Point NO„ VOC CO SOx PM10 Single Total HAP HAP 002 --- 194.1 --- ___ 8.68 (n- 12.54 hexane) 003 --- 7.63 --- -_- _ 0.64 (n- -- 0.845 PTE: hexane) 004 --- 5.41 --- ___ 0.24 (n- 0.318 hexane) 005 6.11 1171.99 33.25 --- --- 14.35 (n- 18.40 hexane) 002 --- 194.1 --- -_- 8.68 (n- 12.54 hexane) Uncontrolled point 003 --- 7.63 --- ___ _ 0.64 (n- 0.845 hexane) source emission rate: 004 --- 5.41 --- ___ 0.24 (n- 0.318 hexane) 005 --- 1171.99 --- ___ ___ 14.35 (n- 18.40 hexane) TOTAL(TPY) --- 1379.13 --- --- --- 23.91 32.10 002 --- 9.71 --- _-_ _ 0.43 (n- -- 0.63 hexane) 003 --- 0.38 --- --_ ___ 0.03 (n- 0.04 Controlled point hexane) source emission rate: 004 --- 5.41 - __ __ 0.24 (n- 0.32 hexane) 005 6.11 58.60 33.25 --- --- 0.72 (n 0.92 hexane) INSIGNIFICANTS 1.2 0.1 2.7 --- -- --- --- (TPY) TOTAL PERMITTED 6.11 73.72 33.25 --- --- 1.39 (n- 1.87 (TPY) hexane) Section 7—Non-Criteria/Hazardous Air Pollutants Uncontrolled Are the Controlled Emission Pollutant CAS# Emission Rate emissions r Rate Ib/ (lb/yr) reportable? y ) Crude Oil Storage - Point 002 Benzene 71432 2871 Yes 144 Toluene 108883 2615 Yes 131 Ethylbenzene 100414 238 No 12 Xylenes 1130207 970 Yes 49 n-Hexane 110543 17362 Yes 868 2,2,4-Trimethylpentane 540841 1020 Yes 51 Produced water storage - Point 003 Benzene 71432 408 Yes 21 n-Hexane 110543 1281 Yes 64 Truck loadout- Point 004 N/A—Not Benzene 71432 80 No Controlled Toluene 108883 73 No N/A—Not Controlled Page 4 a n-Hexane 110543 484 Yes N/A— Not Controlled Separator/Flare-Point 005 Benzene 71432 4284 Yes 215 Toluene 108883 2724 Yes 137 Ethylbenzene 100414 298 Yes 15 Xylenes 1130207 803 Yes 40 n-Hexane 110543 26,690 Yes 1435 Note: Regulation 3, Part A, Section II.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 Yes X No standard? If"yes", complete the information listed below AIRS Point Process Pollutant Regulatory Basis Test Method Section 9—Source Classification What is this facility classification? True X Synthetic Major Minor Minor Classification relates to what programs? X Title V PSD X 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? 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 All 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 A(July, 1992)) in all subsections of Section II. A and B of this regulation. Page 5 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 005 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 All 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. Regulation 3-APENs, Construction Permits, Operating Permits, PSD Part A-APEN Requirements Criteria Pollutants: For criteria pollutants, Air Pollutant Emission Notices are required for: each individual emission point in a non-attainment area with All 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 Applicant is required to obtain a permit since uncontrolled VOC emissions 002, 004, 005 from this facility are greater than the 2.0 TPY threshold (Reg. 3, Part B, Section II.D.3.a) Point 003: Applicant is not required to obtain a permit since the stored produced water contains less than one percent by volume crude oil on an annual average 003 (Reg. 3, Part B, Section II.D.1.m) NSPS OOOO is not applicable because the uncontrolled VOC is less than 6 tpy per vessel. Part B, III.D.2 - RACT requirements for new or modified minor sources This section of Regulation 3 requires RACT for new or modified minor sources located in nonattainment or attainment/maintenance areas. This source is located in the 8-hour ozone nonattainment area, but not the 1-hour ozone area. 004(Loadout) The date of interest for determining whether the source is new or modified is November 20, 2007 (the date of the 8-hour ozone NA area designation). The facility was constructed after that 11/20/2007 date, and thus RACT is required. Operator is using submerged fill (0.6 saturation factor), therefore, RACT requirements are satisfied. Regulation 6 New Source Performance Standards NSPS Kb: Tanks are not subject to Kb because each individual vessel is less than 002, 003 75 m3, and the facility is located prior to custody transfer. NSPS OOOO: Crude oil storage vessels are not subject to OOOO because the 002 control requirements under Reg 7 Section XVII bring the controlled emissions below 6 tpy VOC. NSPS OOOO: Total uncontrolled VOC for the produced water tanks is over 6 tpy (7.63 tpy). However, there are three vessels, and NSPS OOOO does not consider 003 liquid-manifolded vessels to be a single"tank". Therefore, the OOOO applicability is based on 7.63 divided by 3, which is less than 6 tpy—and thus, OOOO does not apply for produced water storage. Page 6 Regulation 7—Volatile Organic Compounds XII. VOLATILE ORGANIC COMPOUND EMISSIONS FROM OIL AND GAS OPERATIONS Section XII does not apply because the material stored is crude oil. 002 (Crude oil storage) XVII STATEWIDE CONTROLS FOR OIL AND GAS OPERATIONS... Crude oil storage vessels are located at an E&P site, have a fixed roof, does not contain only stabilized liquids, and have uncontrolled actual emissions greater than 6 tpy VOC. Therefore, this point is subject to Section XVII B, C.1, C.2, C.3. XVII STATEWIDE CONTROLS FOR OIL AND GAS OPERATIONS.... 003 (prod water Produced water storage vessels are categorically exempt due to less than 1% by storage) volume crude oil (Reg. 3, Part B, Section II.D.1.m), so Reg 7 Section XVII doesn't apply. 005 XVII The separators were newly constructed after August 1, 2014. Therefore, they (Separator/Flare) are subject to Reg 7 Section XVII.G, and control requirements of Reg 7, XVII.B.2. Regulation 8—Hazardous Air Pollutants 002,003,005 None 004 (Truck MACT EEEE: loadout) Not subject because located at a production field facility and thus exempt per 40CFR 63.2334(c)(1). Section 13—Aerometric Information Retrieval System Coding Information Point Process Process Description Emission Pollutant/ Fugitive Emission Factor Control Factor CAS# (YIN) Source (%) 86.094 VOC No E&P Tanks 95 lb/1000 gal 0.6367 Benzene No E&P Tanks 95 lb/1000 gal 0.5801 Toluene No E&P Tanks 95 lb/1000 gal 01 Crude oil Storage Tanks 0.05278 Ethylbenzene No E&P Tanks 95 002 lb/1000 gal 0.2151 Xylenes No E&P Tanks 95 lb/1000 gal y 3.851 n-hexane No E&P Tanks 95 lb/1000 gal 0.2262 2,2,4- No E&P Tanks 95 lb/1000 gal Trimethylpentane SCC 40400312—Fixed Roof Tank, Crude Oil,working+breathing+flashing losses 6.2381 CDPHE PS lb/1000 gal VOC No Memo 09-02 95 01 Produced water storage 0.16667 Benzene No CDPHE PS 95 003 lb/1000 gal Memo 09-02 0.52381 n-Hexane No CDPHE PS 95 lb/1000 gal Memo 09-02 SCC 40400315—Fixed Roof Tank, Produced Water,working+breathing+flashing losses 2.40 VOC No AP-42 0 lb/1000 gal 0.01774 Benzene No AP-42 0 01 Truck Crude oil Loadout lb/1000 gal 004 0.01615 Toluene No AP-42 0 lb/1000 gal 0.10724 n-hexane No AP-42 0 lb/1000 gal SCC 40600132: Crude Oil: Submerged Loading (Normal Service) 16671.3 lb/MMscf VOC No Mass balance 95 005 01 Separator venting and vented flaring 86.92 lb/MMscf NOx No AP-42 Ch 13-5 N/A vented Page 7 472.93 Ib/MMscf CO No AP-42 Ch 13-5 N/A vented 30.470 Ib/MMscf Benzene No Mass balance 95 vented 19.375 lb/MMscf Toluene No Mass balance 95 vented 2.117 lb/MMscf Ethylbenzene No Mass balance 95 vented 5.707 lb/MMscf Xylenes No Mass balance 95 vented 204.05 lb/MMscf n-Hexane No Mass balance 95 vented SCC 31000205—Flares (at a gas production facility) Section 14—Miscellaneous Application Notes AIRS Point 002 Crude Oil Storage Tanks The applicant developed site-specific emission factors for VOC and HAPs using E&P Tanks (flashing+working+breathing losses). A site-specific sample was obtained from each of the three wells contributing liquids to the tank battery, and a separate E&P Tanks run was completed using the analytical data and a well production rate based on observed production. The results from the three E&P Tanks runs were combined using a weighted average based on well throughput to arrive at a blended VOC and HAP emission factor for the storage tanks. VOC: 194.12 tpy*2000/107369 bbl/yr=3.616 lb/bbl =86.094 lb/1000gal Benzene: 1.436 tpy*2000/107369 bbl/yr=0.02674 lb/bbl =0.6367 lb/1000gal Toluene: 1.308 tpy*2000/ 107369 bbl/yr=0.02436 lb/bbl =0.5801 lb/1000gal Ethylbenzene: 0.119 tpy*2000/ 107369 bbl/yr= 0.00222 lb/bbl =0.05278 lb/1000gal Xylenes: 0.485 tpy*2000/ 107369 bbl/yr=0.00903 lb/bbl =0.2151 Ib/1000gal n-Hexane: 8.684 tpy*2000/ 107369 bbl/yr=0.1617 lb/bbl =3.851 lb/1000gal 2,2,4-TMP: 0.51 tpy*2000/ 107369 bbl/yr=0.00950 lb/bbl =0.2262 lb/1000gal AIRS Point 003 Produced water storage (permit-exempt) The applicant used the Weld County default emission factors per PS Memo 09-02. VOC: 0.262 lb/bbl *58,231 bbl/yr= 15257 lb/yr= 7.63 tpy Benzene: 0.007 lb/bbl * 58,231 bbl/yr=408 lb/yr= 0.204 tpy n-Hexane: 0.022 lb/bbl *58,231 bbl/yr= 1281 lb/yr= 0.641 tpy Page 8 AIRS Point 004 Truck crude oil Loadout Units Basis S 0.6 Submerged loading: dedicated normal service P 3.4 Psia Estimated by applicant M 50 Lb/lb-mole Estimated by applicant T 529.67 Deg R Estimated by applicant L Lb/10^3 gal Lb/bbl AP-42: Chapter 5.2 Equation 1 L= 12.46*S`P*M!T L= loading losses in lb per 1000 gallons loaded S = Saturation Factor P=true vapor pressure of liquid loaded [psia] M = molecular weight of vapors [lb/lb-mole] T=temperature of bulk liquid loaded [deg. R] L 2.4 lb/1000 gal 0.10078 lb/bbl Annual requested Throughput 4,509,498 gal/yr Annual requested VOC emissions 10823 lb/yr 5.41 tpy Emission factors for HAPS are: Benzene= (79.97 Ib/yr)/(107,369 bbl/yr) = 0.000745 lb/bbl = 0.01774 lb/1000gal Toluene= (72.84 Ib/yr)/(107,369 bbl/yr) = 0.00068 lb/bbl =0.01615 Ib/1000gal n-hexane= (483.60 Ib/yr)/(107,369 bbl/yr) = 0.0045 lb/bbl =0.10724 Ib/1000gal Page 9 AIRS Point 005 Separator venting and flaring when sales pipeline is down The applicant used a mass balance approach to calculated emissions from separator venting/flaring when the sales pipeline is down. The applicant provided site-specific analyses from each of the three wells which were then combined into a weighted average using the proportion of total throughput for each well: Sample date 12/8/2015 12/8/2015 1/15/2016 WEIGHTED AVERAGE Well 4-26-8-60 5-26-8-60 6-26-8-60 mole% mole% mole% mole% Helium 0.01 0.02 0.01 0.01433 CO2 2.6 2.6 2.71 2.63065 N2 0.99 1.12 0.95 1.03509 methane 71.2572 72.5156 70.9961 71.72877 ethane 12.1621 12.1341 12.5844 12.26765 propane 8.0278 7.5686 8.3336 7.91438 isobutane 0.7687 0.6706 0.7616 0.72429 n-butane 2.5169 2.1293 2.3957 2.31547 isopentane 0.4622 0.3802 0.3774 0.40310 n-pentane 0.612 0.4902 0.4648 0.51830 cyclopentane 0.0514 0.0316 0.0327 0.03763 n-Hexane 0.1192 0.0730_ 0.0790 0.08802 cyclohexane 0.0271 0.0167 0.0193 0.02043 Other hexanes 0.2118 0.1302_ 0.1395 0.15636 heptanes 0.0802 0.05 0.0568 0.06062 methylcyclohexane 0.0182 0.0115 0.0136 0.01402 224-TMP 0.0002 0 0.0001 0.00009 Benzene 0.0194 0.0121 0.0131 0.01449 Toluene 0.0108 0.0062_ 0.0073 0.00784 Ethylbenzene 0.0008 0.0007_ 0.0007 0.00073 Xylenes 0.0025 0.0017 0.0019 0.00199 C8+ Heavies 0.0413 0.0257 0.0324 0.03207 Fuel Heating Value 1292.1 1258.7 1289.9 1278.2 Throughput(bbl/d) 85 127.3 82 Proportion of Throughput 28.88% 43.26% 27.86% (continued) Page 10 (Point 005 continued) Using the weighted average calculated above, I used the Displacement Equation to apply a mass balance: 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(O) 140.6 MMscf/yr 16050.2 scf/hr 11.94 MMscf/mo MW 22.95 Ib/Ib-mol 0.00337 MMscf/d mole% MW Ibxllbmol mass fraction E lb/hr lb/yr tpy Helium 0.01433 4.0026 0.001 0.000 Helium 0.0 213 0.11 CO2 2.63065 44.01 1.158 0.050 CO2 49.0 429497 214.75 N2 1.03509 28.013 0.290 0.013 N2 12.3 107568 53.78 methane 71.72877 16.041 11.506 0.501 methane 487.3 4268457 2134.23 ethane 12.26765 30.063 3.688 0.161 ethane 156.2 1368170 684.08 propane 7.91438 44.092 3.4896 0.152 propane 147.8 1294561 647.28 isobutane 0.72429 58.118 0.4209 0.018 isobutane 17.8 156159 78.08 n-butane 2.31547 58.118 1.3457 0.059 n-butane 57.0 499225 249.61 isopentane 0.40310 72.114 0.2907 0.013 isopentane 12.3 107841 53.92 n-pentane 0.51830 72.114 0.3738 0.016 n-pentane 15.8 138659 69.33 cyclopentane 0.03763 70.13 0.0264 0.001 cyclopentane 1.1 9789 4.89 n-Hexane 0.08802 86.18 0.0759 0.003305 n-Hexane 3.2 28139 14.07 cyclohexane 0.02043 84.16 0.0172 0.001 cyclohexane 0.7 6378 3.19 Otherhexanes 0.15636 86.18 0.1348 0.006 Otherhexanes 5.7 49989 24.99 heptanes 0.06062 100.21 0.0607 0.003 heptanes 2.6 22535 11.27 methylcyclohexane 0.01402 98.19 0.0138 0.001 methylcyclohexane 0.6 5107 2.55 224-IMP 0.00009 114.23 0.0001 0.000 224-IMP 0.0 36 0.02 Benzene 0.01449 78.12 0.0113 0.000493 Benzene 0.5 4198 2.10 Toluene 0.00784 92.15 0.0072 0.000315 Toluene 0.3 2678 1.34 Ethylbenzene 0.00073 106.17 0.0008 0.000034 Ethylbenzene 0.0 287 0.14 Xylenes 0.00199 106.17 0.0021 0.000092 Xylenes 0.1 783 0.39 C8+Heavies 0.03207 120.01 0.0385 0.001677 C8+Heavies 1.6 14278 7.14 VOC mass fraction: 0.2749 Total VOC Emissions(Uncontrolled) 1170.3213 Calc.MW: 22.95 annual limit assuming 95%control 58.52 Notes Throughput(Q)is taken from the revised calculation sheets and calculated as follows: 841.2 Mscf/d gas vented(based on first 30 days production)*365 d*(4000 hrs/8760 hrs)=140.2 MMscf/yr, Pilot gas at 50 scf/hr*8760 hr=0.438 MMscf/yr Total throughput:140.2+0.438=140.64 MMscf/yr. This amount is rounded down to 140.6 MMscf/yr per the application. Total hours of venting limited to 4000 hours per year across all three separators. Mole%,MW,and mass fractions from weighted average of site-specific gas analyses sampled 12/8/2015 and 1/15/2016. The average MW of Cd+is assumed using the gas analysis data. The Uncontrolled VOC calculated in the application is 1171.99 tpy VOC,which is accepted as reasonably close and more conservative than the amount calculated above. Similarly,the HAP amounts from application are accepted as slightly more conservative than those calc'd above. The application presented VOC and HAP quantities very close but slightly higher than what was calculated above. The amounts presented in the application are accepted as they are slightly more conservative. The accepted uncontrolled emission amounts are as follows: VOC: 1171.99 tpy uncontrolled Benzene: 4284.13 lb/yr Toluene: 2724.13 lb/yr Ethylbenzene: 297.69 lb/yr Xylenes: 802.39 lb/yr n-hexane: 28689.89 lb/yr 2,2,4-TMP: not reportable (<250 Ib/yr) (continued) Page 11 (Point 005 continued): Flaring Information Equipment Description Flare to combust produced gas during sales gas pipeline downtime. Manufacturer Leed Model 25' Serial Number 80366 Gas Heating Value 1278.2 Btu/scf Throughput 179714.92 MMBtu/yr Combustion emission factor source: AP-42: Chapter 13.5 0.068 lb NOX/MMBtu 0.37 lb CO/MMBtu 6.11 tpy NOX 33.25 tpy CO Accepted Emission Factors (adjusted to match more conservative amounts from application) Uncontrolled NOX 86.92 lb/MMscf natural gas vented CO 472.93 lb/MMscf natural gas vented VOC 16671.3 lb/MMscf natural gas vented Benzene 30.470 lb/MMscf natural gas vented Toluene 19.375 lb/MMscf natural gas vented Ethylbenzene 2.117 lb/MMscf natural gas vented Xylenes 5.707 lb/MMscf natural gas vented n-Hexane 204.05 lb/MMscf natural gas vented 224-TMP Not reportable lb/MMscf natural gas vented Controlled NOX 86.92 lb/MMscf natural gas vented CO 472.93 lb/MMscf natural gas vented VOC 834 lb/MMscf natural gas vented Benzene 1.5235 b/MMscf natural gas vented Toluene 0.9688 b/MMscf natural gas vented Ethylbenzene 0.1059 b/MMscf natural gas vented Xylenes 0.2854 b/MMscf natural gas vented n-Hexane 10.2024 b/MMscf natural gas vented 224-TMP Not reportable b/MMscf natural gas vented Page 12 z 3 d uo 0 o w ° y g o O U : ii ,w 7 `\ M M M„ I Ww° a = � rncr. 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