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Home My WebLink About20141230.tiff STATE OF COLORADO John W.Hickenlooper,Governor Larry Wolk,MD,MSPH �ov•coro 4.. Executive Director and Chief Medical Officer - - Dedicated to protecting and improving the health and environment of the people of Colorado *{ CI 4300 Cherry Creek Dr.S. Laboratory Services Division '„ r Denver,Colorado 80246-1530 8100 Lowry Blvd. rate Phone(303)692-2000 Denver,Colorado 80230-6928 Colorado Department Located in Glendale,Colorado (303)692-3090 of Public Health www.colorado.gov/cdphe and Environment Weld County-Clerk to the Board 1150 O St POBox758 RECEIVED Greeley, CO 80632 April 10, 2014 APR 1 4 2014 WELD COUNTY COMMISSIONERS Dear Sir or Madam: On April 13, 2014, the Air Pollution Control Division will publish a public notice for Carrizo Oil &Gas Inc. —Nelson 17 Multi-Pad, 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 & Environment APCD-SS-B I 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 Attention: Clara Gonzales Regards, (Lc& tlil3CLI2i,a.) Clara Gonzales • Public Notice Coordinator Stationary Sources Program Air Pollution Control Division Enclosure 1�ublxt ReAlleh.) CC' pw(ft,3nt cH> 2014-1230 AI al 14-1y 16#'114 STATE OF COLORADO John W.Hickenlooper,Governor Larry Wolk, MD,MSPH 4°! ?Zo4 Executive Director and Chief Medical Officer tic ?$ Dedicated to protecting and improving the health and environment of the people of Colorado * 'r[ 1 + 4300 Cherry Creek Dr.S. Laboratory Services Division rats++ Denver,Colorado 80246-1530 8100 Lowry Blvd. Phone(303)692-2000 Denver,Colorado 80230-6928 Colorado Department Located in Glendale,Colorado (303)692-3090 of Public Health www.colorado.gov/cdphe and Environment Website Title: Carrizo Oil &Gas Inc.—Nelson 17 Multi-Pad—Weld County Released To: The Greeley Tribune On: April 10, 2014 Published: April 13, 2014 PUBLIC NOTICE OF A PROPOSED PROJECT OR ACTIVITY WARRANTING PUBLIC COMMENT Notice is hereby given that an application for a proposed project or activity has been submitted to the Colorado Air Pollution Control Division for the following source of air pollution: Applicant: Carrizo Oil &Gas Inc. Facility: Nelson 17 Multi-Pad wellpad SESW Section 17, T9N R60W Weld County The proposed project or activity is as follows: The applicant proposes a new wellpad with 12-400bbl crude oil tanks, loadout and a combustor for the tanks and a separator for well flaring. 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.I.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 13WE2783 have been filed with the Weld County Clerk's office. A copy of the draft permit and the Division's analysis are available on the Division's website at www.colorado.gov/cdphe/AirPublicNotices The Division hereby solicits submission of public comment from any interested person concerning the ability of the proposed project or activity to comply with the applicable standards and regulations of the Commission. The Division will receive and consider written public comments for thirty calendar days after the date of this Notice. Any such comment must be submitted in writing to the following addressee: Rebecca Vasil Colorado Department of Public Health and Environment 4300 Cherry Creek Drive South, APCD-SS-Bl Denver, Colorado 80246-1530 cdphe.commentsapcd@state.co.us Iill STATE OF COLORADO COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT AIR POLLUTION CONTROL DIVISION * t. '' * TELEPHONE: (303)692-3150 «�`ta„;r+' •1876• CONSTRUCTION PERMIT PERMIT NO: 1 3WE2783 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 the Nelson 17 Multi-Pad, located in the SESW of Section 17, Township 9N, Range 60W, in Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Equipment Point Description ID TANKS 001 Twelve (12) 400 BBL fixed roof storage tanks used to store crude oil. Emissions from these tanks are controlled by an enclosed 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 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 www.cdphe.state.co.us/ap/downloadforms.html. 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 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 AIRS ID: 123/9BEB Page 1 of 7 Condensate Tank SM/M Version 2012-1 Depa en f li Health and Environment it Pollution Control Division months or mDolor t to ion w' a reasonable time of the estimated completion date. The Division may grant extensions of the deadline per Regulation No. 3, Part B, III.F.4.b. (Reference: Regulation No. 3, Part B, III.F.4.) 4. The operator shall complete all initial compliance testing and sampling as required in this permit and submit the results to the Division as part of the self-certification process. (Reference: Regulation No. 3, Part B, Section III.E.) 5. The operator shall retain the permit final authorization letter issued by the Division, after completion of self-certification,with the most current construction permit. This construction permit alone does not provide final authority for the operation of this source. EMISSION LIMITATIONS AND RECORDS 6. Emissions of air pollutants shall not exceed the following limitations (as calculated in the Division's preliminary analysis). (Reference: Regulation No. 3, Part B, Section II.A.4) Annual Limits: Facility AIRS Tons per Year Equipment ID Point NO„ VOC CO Emission Type TANKS 001 --- 14.5 -- 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. 7. The emission points in the table below shall be operated and maintained with the control equipment as listed in order to reduce emissions to less than or equal to the limits established in this permit (Reference: Regulation No.3, Part B, Section III.E.) Facility AIRS Control Device Pollutants Equipment ID Point Controlled COMBUSTOR 005 Combustor VOC and HAPS 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) AIRS ID: 123/9BEB Page 2 of 7 olor Depa en rf • •li Health and Environment r r it Pollution Control Division Process/Con Facility nnual Equipment PoRSt Process Parameter ALimit ID TANKS 001 Crude Oil throughput 173,360 BBL/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 9. The permit number and AIRS ID point number (e.g. 123/4567/890) shall be marked on the subject equipment for ease of identification. (Reference: Regulation Number 3, Part B, III.E.) (State only enforceable) 10. 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.) 11. 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.) 12. This source is subject to the odor requirements of Regulation No.2. (State only enforceable) OPERATING & MAINTENANCE REQUIREMENTS 13. Upon startup of these points, the owner or operator shall follow the most recent operating and maintenance(O&M)plan and record keeping format approved by the Division, in order to demonstrate compliance on an ongoing basis with the requirements of this permit. Revisions to your O&M plan are subject to Division approval prior to implementation. (Reference: Regulation No. 3, Part B, Section III.G.7.) COMPLIANCE TESTING AND SAMPLING Initial Testing Requirements 14. The owner or operator shall demonstrate compliance with Condition 11, using EPA Method 9 to measure opacity from the flare. This measurement shall consist of a minimum twenty- four consecutive readings taken at fifteen second intervals over a six minute period. (Reference: Regulation No. 1, Section II.A.1 & 4) Periodic Testing Requirements AIRS ID: 123/9BEB Page 3 of 7 olor Depa en f li Health and Environment it Pollution Control Division 15. The owner or h with 'tion 11, using EPA Method 9 to measure opacity from the flare. (Reference: Regulation No. 1, Section II.A.1 & 4) ADDITIONAL REQUIREMENTS 16. A revised Air Pollutant Emission Notice(APEN)shall be filed:(Reference: Regulation No.3, Part A, II.C) a. Annually by April 30th whenever a significant increase in emissions occurs as follows: For any criteria pollutant: For sources emitting less than 100 tons per year, a change in actual emissions of five (5) tons per year or more, above the level reported on the last APEN; or For 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. 17. Federal regulatory program requirements (i.e. PSD, NANSR or Title V Operating Permit) shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit condition. Any relaxation that increases the potential to emit above the applicable Federal program threshold will require a full review of the source as though construction had not yet commenced on the source. The source shall not exceed the Federal program threshold until a permit is granted. (Regulation No. 3 Part D). GENERAL TERMS AND CONDITIONS 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 AIRS ID: 123/9BEB Page 4 of 7 II olor Depat' en, f ell Health and Environment it Pollution Control Division spi,to operate ar- -d ,,w •- - -- - [, e _ : =J elf- r ,a:., for Final Authorization section of this permit. 20. 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. 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 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. 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 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: Rebecca Vasil Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Carrizo Oil & Gas, Inc.. AIRS ID: 123/9BEB Page 5 of 7 olor Depa en f li Health and Environment it Pollution Control Division Notes to Permit Holder e o e an . 1) The permit holder is required to pay fees for the processing time for this permit.An invoice for these fees will be issued after the permit is issued.The permit holder shall pay the invoice within 30 days of receipt of the invoice.Failure to pay the invoice will result in revocation of this permit(Reference: Regulation No.3, Part A, Section VI.B.) 2) The production or raw material processing limits and emission limits contained in this permit are based on the consumption rates requested in the permit application. These limits may be revised upon request of the owner or operator providing there is no exceedance of any specific emission control regulation or any ambient air quality standard. A revised air pollution emission notice (APEN) and complete application form must be submitted with a request for a permit revision. 3) This source is subject to the Common Provisions Regulation Part II, Subpart E, Affirmative Defense Provision for Excess Emissions During Malfunctions.The owner or operator shall notify the Division of any malfunction condition which causes a violation of any emission limit or limits stated in this permit as soon as possible, but no later than noon of the next working day, followed by written notice to the Division addressing all of the criteria set forth in Part II.E.1 of the Common Provisions Regulation. See: htto://www.colorado.gov/cs/Satellite?c=Document C&childpaoename=CDPHE- Main%2FDocument C°/02FCBONAddLinkView&cid=1251599389641&pactename=CBONWrapper 4) The following emissions of non-criteria reportable air pollutants are estimated based upon the process limits as indicated in this permit. This information is listed to inform the operator of the Division's analysis of the specific compounds emitted if the source(s)operate at the permitted limitations. Uncontrolled Emission Are the Controlled AIRS Rate emissions Emission Point Pollutant CAS# BIN (Ib/yr) reportable? Rate(Ib/yr) Benzene 71432 A 10,534 YES 527 Hexane 110543 C 60,009 YES 3,000 Toluene 108883 C 9,481 YES 474 001 Ethylbenzene 100414 C 1,137 YES 57 Xylene 1330207 C 3,150 YES 158 2'2'4 540841 C 3,979 YES 199 Trimethylpentane 5) The emission levels contained in this permit are based on the following emission factors: Emission Factors Emission Factors Uncontrolled Controlled CAS# Pollutant lb/BBL lb/BBL Source Condensate Condensate Throughput Throughput VOC 3.34 0.1669 E&P Tanks 110543 n-Hexane 0.346 0.0173 E&P Tanks 71432 Benzene 0.0608 0.003 E&P Tanks 108883 Toluene 0.0547 0.003 E&P Tanks 100414 Ethylbenzene 0.00656 0.0003 E&P Tanks 1330207 Xylene 0.0182 0.0009 E&P Tanks 540841 2'2,4 0.023 0.0011 E&P Tanks Trimethylpentane AIRS ID: 123/9BEB Page 6 of 7 xt e 4. "`tea °uva. ,"3• olor-A Depat en of ' •li Health and Environment s it Pollution Control Division Note: The co , . i • -' is ,;, f r• •r p•,, " I r - - bas _ .•,;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 this I 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 PSD Synthetic Minor Source of: VOC, HAPS 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.ghoaccess.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) An Oil and Gas Industry Construction Permit Self-Certification Form is included with this permit packet. Please use this form to complete the self-certification requirements as specified in the permit conditions. Further guidance on self-certification can be found on our website at: www.colorado.qov/cdphe/oilqaspermits AIRS ID: 123/9BEB Page 7 of 7 Construction Permit Application Preliminary Analysis Summary Section 1 —Applicant Information Company Name: Carrizo Oil &Gas, Inc. Permit Number: 13WE2783 Source Location: SESW Sec. 17 T9N R60W,Weld County (non-attainment) Equipment Description: 12-400bbl Crude Oil Storage Tanks AIRS ID: 123-9BEB-001 Date: January 29th 2014 Review Engineer: Rebecca Vasil Control Engineer: Chris Laplante Section 2—Action Completed Grandfathered Modification 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 may be granted"Final Approval"without first being issued an Initial Approval permit *Grandfathered exemption is for any tanks in service prior to December 30, 2002 Section 3—Applicant Completeness Review Was the correct APEN submitted for this source type? X Yes No Is the APEN signed with an original signature? X Yes No Was the APEN filled out completely? X Yes No Did the applicant submit all required paperwork? X Yes No Did the applicant provide ample information to determine emission rates? X Yes No If you answered"no"to any of the above, when did you mail an Information Request letter to the source? On what date was this application complete? September 20th 2013 Section 4—Source Description AIRS Point Equipment Description 001 Twelve (12) above ground 400 bbl atmospheric condensate storage tank Is this a portable source? Yes X No Is this location in a non-attainment area for any criteria Yes X No pollutant? If"yes", for what pollutant? PMto CO 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 PMto 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 Yes X No Regulation 7, Sections XII and XVII.C may apply) Page 1 Section 5—Emission Estimate Information AIRS Point Emission Factor Source Source may provide site-specific emission factors using gas sample and E&P 001 Tanks. Will need to calculate emission factors from E&P Tanks. 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 001 173,360 BBL per year Basis for Actual .ns Reported Purina this APEN Ring(Reported to Inventors/) AIRS Point Process Consumption/Throughput/Production Data Year 001 173,360 BBL per year 2013 Bahl for Permitted Emissions(Permit Limitsl AIRS Point Process Consumption/Throughput/Production 001 173,360 BBL per year Does this source use a control device? X Yes No AIRS Point Process Control Device Description 'e Reduction Granted 005 01 Combustor 95 Section 6—Emission Summary(tons per year) Point NO, VOC CO Single HAP Total HAP PTE: 001 — 289.41 — 30.0 (n-Hexane) 44.15 Uncontrolled point 001 -- 289.41 -- 30.0 (n-Hexane) 44.15 source emission rate: Controlled point 001 -- 14.47 1.5(n-Hexane) 2.21 source emission rate: Section 7—Non-Criteria/Hazardous Air Pollutants Uncontrolled Are the Controlled Emission Pollutant CAS# BIN Emission Rate emissions (Ib/yr) reportable? Rate(Idlyr) Benzene 71432 A 10,534 Yes 527 n-Hexane 110543 C 60,009 Yes 3,000 Toluene 108883 C 9,481 Yes 474 Ethylbenzene 100414 C 1,137 Yes 57 Xylenes 1330207 C 3,150 Yes 158 2,2,4 Trimethylpentate 540841 C 3,979 Yes 199 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? Page 2 If"yes", complete the information listed below AIRS Point Process Pollutant Regulatory Basis Test Method VOC, Liquids Analyses 001 01 HAPS PS Memo 05-01 according to PS Memo 05-01 Section 9—Source Classification Is this a new previously un-permitted source? X Yes No What is this facility classification? True X Synthetic Major Minor Minor Classification relates to what programs? X Title V X PSD NA NSR X MACT Is this a modification to an existing permit? Yes X No If"yes"what kind of modification? Minor Synthetic Major Minor Section 10—Public Comment Does this permit require public comment per CAQCC Regulation 3? X Yes No If"yes", for which pollutants?Why? VOC, HAPs 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.ii (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 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, 001 1992)) in all subsections of Section II. A and B of this regulation. Section II.A.5 - Smokeless Flare or Flares for the Combustion of Waste Gases No owner or operator of a smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the atmosphere of any air pollutant which is in excess of 30% opacity for a period or periods aggregating more than six minutes in any sixty consecutive minutes. Regulation 2—Odor Section I.A - No person, wherever located, shall cause or allow the emission of odorous air contaminants from any single source such as to result in detectable odors which are 001 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. Page 3 Regulation 3-APENs.Construction Permits, Operating Permits, PSD Part A-APEN Requirements 001 Criteria Pollutants: (Applicant is required to file an APEN since emissions exceed 1 ton per year VOC Part B—Construction Permit Exemptions 001 Applicant is required to obtain a permit since uncontrolled VOC emissions from this facility are greater than the 2.0 TPY threshold(Reg. 3,Part 8, Section II.D.3.a) Regulation 8 .i .:;s. Performance Standards NSPS Kb: for storage vessels greater than 19,800 gallons after 7/23/84. 001 Is this source greater than 19,800 gallons (471 bbl)? No Is this source subject to NSPS Kb?No Source is less than 19,800 gallons Regulation 7—Volatile Organic QympounaIj 001 Tank is crude oil, then Regulation 7 does not apply. Regulation 8-Hazardous Air Pollutar tits MACT EEEE: Organic Liquids Distribution Pick one: 001 • This source is not subject to MACT EEEE because it is not located at a major source of HAP. MACT HH Pick one: 001 • This source is not subject to MACT HH because it is not located at a major source of HAP. Section 13—Aerometric Information Retrieval System Coding Information Point Process Process Emission Pollutant/ Fugitive Emission Factor Source Control Description Factor CAS# (Y/N) (%) 3.34 lb/bbl V0C No E&P tanks 95 throughput 0.608 Benzene/ Ib/bbl 71432 No E&P tanks 95 throughput 0.346 n-Hexane lb/bbl /110543 No E&P tanks 95 throughput E&P Crude Oil 0.0547 Toluene 001 01 Storage Tanks lb/bbl /108883 No E&P tanks 95 throughput 0.00656 Ethylbenz lb/bbl ene/ No E&P tanks 95 throughput 100414 0.0182 Xylenes lb/bbl /1330207 No E&P tanks 95 throughput 0.023 2,2,4 lb/bbl Trimethylp No E&P tanks 95 throughput entane SCC 40400311 —Fixed Roof Tank,Condensate,working+breathing+flashing losses Page 4 Section 14—Miscellaneous Application Notes AIRS Point 001 Condensate Storage Tanks This source is not located in the 8-hour ozone non-attainment area (Weld County is in partial non- attainment). Therefore, the provisions of Regulation 7, Section XII do not apply to this source. The statewide requirements of Regulation 7, Section XVII.C do not currently apply to this source since the tanks are crude oil. Page 5 D STATE OF COLORADO pfl Cp�O COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT e AIR POLLUTION CONTROL DIVISION F TELEPHONE: (303)692-3150 `. r .1876 CONSTRUCTION PERMIT PERMIT NO: 13E2785 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 the Nelson 17 Multi-Pad, located in the SESW of Section 17, Township 9N, 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 003 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 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 www.cdphe.state.co.us/ap/downloadforms.html. 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 months after either, the date of issuance of this construction permit or the date AIRS ID: 123/9BEB Page 1 of 7 Condensate Loadout TM Version 2012-1 Co do p e o Public D Air PollutionHealthand Control DivisionEnvironment 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 VOC Emission Type ID LOAD 003 8.7 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) Process/Consumption Limits AIRS Process Parameter Annual Limit Point 003 Crude oil Loading 173,360 BBL AIRS ID: 123/9BEB Page 2 of 7 � am_ II Co A do ui pz e o Public Health and Environment Air Pollution Control Division 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. 7. Crude oil loading to truck tanks shall be conducted by submerged fill. (Reference: Regulation 3, Part B, III.E) STATE AND FEDERAL REGULATORY REQUIREMENTS 8. This source is subject to the odor requirements of Regulation No. 2. (State only enforceable) 9. The owner or operator shall follow loading procedures that minimize the leakage of VOCs to the atmosphere including, but not limited to (Reference: Regulation 3, Part B, III.E): a. Hoses, couplings, and valves shall be maintained to prevent dripping, leaking, or other liquid or vapor loss during loading and unloading. b. All compartment hatches (including thief hatches) shall be closed and latched at all times when loading operations are not active, except for periods of maintenance, gauging, or safety of personnel and equipment. c. The owner or operator shall inspect loading equipment and operations onsite at the time of inspections to monitor compliance with Condition 9 (a) and (b) above. The inspections shall occur at least monthly. Each inspection shall be documented in a log available to the Division on request. 10. 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. OPERATING & MAINTENANCE REQUIREMENTS 11. This source is not required to follow a Division-approved operating and maintenance plan. COMPLIANCE TESTING AND SAMPLING 12. This source is not required to comply with any testing and sampling requirements. ADDITIONAL REQUIREMENTS 13. A revised Air Pollutant Emission Notice (APEN) shall be filed: (Reference: Regulation No. 3, Part A, II.C) AIRS ID: 123/9BEB Page 3 of 7 Co do p e o Public and onment D Air PollutionHealth ControlEnvir Division a. Annually by April 30 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 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. 14. Federal regulatory program requirements (i.e. PSD, NANSR or Title V Operating Permit) shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit condition. Any relaxation that increases the potential to emit above the applicable Federal program threshold will require a full review of the source as though construction had not yet commenced on the source. The source shall not exceed the Federal program threshold until a permit is granted. (Regulation No. 3 Part D). GENERAL TERMS AND CONDITIONS: 15. 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. 16. 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. AIRS ID: 123/9BEB Page 4 of 7 Col do p e o Public Health and Environment Air Pollution Control Division 17. 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. 18. 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. 19. 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. 20. 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. 21. 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: Rebecca Vasil Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Carrizo Oil & Gas, Inc. AIRS ID: 123/9BEB Page 5 of 7 D Co do p e o Public Henme Air Pollution alth ControlandE Division nt 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: http://www.colorado.gov/cs/Satellite?c=DocumentC&childoagename=CDPHE- Main%2FDocument C%2FCBONAddLinkView&cid=1251599389641&paaename=CBONWrapper 4) The following emissions of non-criteria reportable air pollutants are estimated based upon the process limits as indicated in this permit. This information is listed to inform the operator of the Division's analysis of the specific compounds emitted if the source(s) operate at the permitted limitations. Uncontrolled Emission Are the Controlled AIRS Rate emissions Emission Point Pollutant CAS# BIN (lb/yr) reportable? Rate(lb/yr) n-Hexane 110543 C 267.63 NO N/A 003 Benzene 71432 A 30.59 NO N/A 5) The emission levels contained in this permit are based on the following emission factors: Emission Factors- Uncontrolled CAS Pollutant lb/1000 gal Source loaded VOC 2.40 AP-42 The uncontrolled VOC emission factor was calculated using AP-42, Chapter 5.2, Equation 1 (version 1/95) using the following values: L= 12.46*S*P*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) = 530 °R AIRS ID: 123/9BEB Page 6 of 7 Col do p rtme o Public Health and Environment Air Pollution Control 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, HAPs PSD 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 SubpartA—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) An Oil and Gas Industry Construction Permit Self-Certification Form is included with this permit packet. Please use this form to complete the self-certification requirements as specified in the permit conditions. Further guidance on self-certification can be found on our website at: www.colorado.gov/cdphe/oilqaspermits AIRS ID: 123/9BEB Page 7 of 7 Construction Permit Application Preliminary Analysis Summary Section 1 —Applicant Information Company Name: Carrizo Oil &Gas, Inc. Permit Number: 13WE2785 Source Name: Nelson 17 Multi-pad Source Location: SESW Section 17 T9N R60W,Weld County Equipment Description: Crude Oil Loadout AIRS ID: 123-9BEB-003 Review Date: February 5th 2014 Review Engineer: Rebecca Vasil Section 2—Action Completed X CP1 Modification APEN Required/Permit Exempt Final Approval Transfer of Ownership APEN Exempt/Permit Exempt Section 3—Applicant Completeness Review Was the correct APEN submitted for this source type? X Yes No Is the APEN signed with an original signature? X Yes No Was the APEN filled out completely? X Yes No Did the applicant submit all required paperwork? X Yes No Did the applicant provide ample information to determine emission rates? X Yes No If you answered "no"to any of the above, when did you mail an Information Request letter to the source? On what date was this application complete? September 20, 2013 Section 4—Source Description AIRS Point Equipment Description 003 Truck Condensate Loadout Is this a portable source? Yes X No Is this location in a non-attainment area for any criteria Yes X No pollutant? If"yes", for what pollutant? PM10 CO 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 Yes X No Regulation 7, Sections XII and XVII.C may apply) Is this source located at an oil and gas exploration site? X Yes No Page 1 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 condensate(hydrocarbons that have Yes No an API gravity of 40 degrees or greater) per year or submerged fill less than 16,308 bbl of condensate per year? Is this source located at a facility that is considered a major source of hazardous air pollutant(HAP) Yes X No emissions? Will this equipment be operated in any NAAQS Yes X No nonattainment area? Does this source load gasoline into transport vehicles? Yes X No Section 5—Emission Estimate Information AIRS Point Emission Factor Source AP-42: Chapter 5.2, Equation 1 L= 12.46*S*P*M/T 003 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. RI Did the applicant provide actual process data for the emission inventory? X Yes No Basis for Potential to Emit(PTEI AIRS Point Process Consumption/Throughput/Production 003 173,360 BBL per year crude oil loaded , , „ AIRS Point Process Consumption/ThroughpuUProduction 003 173,360 BBL per year crude oil loaded Basis for Permitted Emissions(Permit Limitsi AIRS Point Process Consumption/Throughput/Production 003 173,360 BBL per year crude oil loaded Does this source use a control device? Yes X No Section 6—Emission Summary (tons per year) Point NO, VOC CO Single HAP HAP PTE: 001 --- 8.73 --- 0.13 (n-hexane) 0.15 Uncontrolled point 001 --- 8.73 --- 0.13 (n-hexane) 0.15 source emission rate: Permitted point source 001 8.73 0.13(n-hexane) 0.15 emission rate: Section 7—Non-Criteria/Hazardous Air Pollutants Uncontrolled Are the Controlled Emission Pollutant CAS# BIN Emission Rate emissions (Iblyr) reportable? Rate(lb/yr) Benzene 71432 A 30.59 No N/A n-Hexane 110543 C 267.63 No N/A Page 2 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? Section 9—Source Classification Is this a new previously un-permitted source? X Yes No What is this facility classification? True X Synthetic Major Minor Minor Classification relates to what programs? X Title V X PSD NA NSR X MACT Is this a modification to an existing permit? Yes X No If"yes"what kind of modification? Minor Synthetic Major Minor Section 10—Public Comment Does this permit require public comment per CAQCC Regulation 3? X Yes No If"yes", for which pollutants?Why?VOC, HAPS 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 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)? AIRS Point Section 12—Regulatory Review Regulation 1 -Particulate, Smoke, Carbon Monoxide and Sulfur Dioxide 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 003 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.) Regulation 2—Odor Section I.A- No person, wherever located, shall cause or allow the emission of odorous air contaminants from any single source such as to result in detectable odors which are 003 measured in excess of the following limits: For areas used predominantly for residential or commercial purposes it is a violation if odors are detected after the odorous air has been diluted with seven (7)or more volumes of odor free air. Page 3 Regulation 3-APENs, Construction Pem lts.O0erating Permits. PSD Criteria Pollutants: Applicant is required to file an APEN since emissions exceed 2 tons per year VOC Part B—Construction Permit Exemptions Applicant is required to obtain a permit since uncontrolled VOC emissions from this facility are greater than the 5.0 TPY threshold(Reg. 3, Part B, Section ILD.3.a) 003 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 not located in the 8-hour ozone nonattainment area, but not the 1-hour ozone area. Since source is in attainment, RACT is not required. However, operator is using 0.6 saturation factor, which does satisfy RACT requirements. Regulation 6-New Source Performance Standards 003 No applicable subpart. This facility is not a bulk oasoline terminal. Regulation 7-Volatile Organic Compounds No sections apply. Per Regulation 7, Section VI.C, a terminal is defined as a petroleum liquid storage and distribution facility that has a daily average throughput of more than 003 76,000 liters of gasoline(20,000 gallons),which is loaded directly into transport vehicles. This facility is neither a terminal, nor a bulk plant per definitions in Reg 7, Section VI.C. Regulation 8—Hazardous Air Pollutants 003 None Section 13—Aerometric Information Retrieval System Coding Information Process/ Emission Process Emission Pollutant/ Fugitive Control Point Process Description throughput Factor CAS# (Y/N Factor % Limit ) Source ( ) 2.40 01 Truck Condensate 173,360 lb/1,000 V0C No AP 42 0 003 Loadout BBUyr gallon throughput SCC 40600132: Crude Oil: Submerged Loading (Normal Service) Page 4 Section 14—Miscellaneous Application Notes AIRS Point 002 Truck Condensate Loadout Units Basis S 0.6 Submerged loading: dedicated normal service based on source's description/drawings P 3.4 Psia Based on extended natural gas sample M 50 Lb/lb-mole Based on extended natural gas sample T 530 Deg R Based on source's knowledge of bulk liquid temperature L 2.40 Lb/10^3 gal Value is used to calculate annual emissions of VOC 1.01E-01 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 2.401b/10^3 gal 1.01 E-01 Ib/bbl Annual requested Throughput 7281120ga1/yr Annual requested VOC emissions 174601b/yr 8.73tpy _ Page 5 ar STATE OF COLORADO of•co<O COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT _ e eVgJ AIR POLLUTION CONTROL DIVISION � � TELEPHONE: (303)692-3150 *14,, * /896* CONSTRUCTION PERMIT PERMIT NO: 13WE2786 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 the Nelson 17 Multi-Pad, located in the SESW of Section 17, Township 9N, Range 60W, in Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Equipment Point Description ID SEPARATOR 004 Separator controlled by a 25' flare stack. Flare has a minimum combustion efficiency of 95%. The flare is not enclosed. 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 www.cdphe.state.co.us/ap/downloadforms.html. 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 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; (Hi) does not complete construction within a reasonable time of the AIRS ID: 123/9BEB Page 1 of 7 Wellhead Version 2012-1 I) of De en f Public PollutionHealthand ControlEnvironment Division estimated completion date. The Division may grant extensions of the deadline per Regulation No. 3, Part B, III.F.4.b. (Reference: Regulation No. 3, Part B, III.F.4.) 4. The operator shall complete all initial compliance testing and sampling as required in this permit and submit the results to the Division as part of the self-certification process. (Reference: Regulation No. 3, Part B, Section III.E.) 5. The operator shall retain the permit final authorization letter issued by the Division, after completion of self-certification,with the most current construction permit. This construction permit alone does not provide final authority for the operation of this source. EMISSION LIMITATIONS AND RECORDS 6. Emissions of air pollutants shall not exceed the following limitations (as calculated in the Division's preliminary analysis). (Reference: Regulation No. 3, Part B, Section II.A.4) Annual Limits: Facility AIRS Tons per Year Equipment ID Point NO, VOC CO Emission Type SEPARATOR 004 1.39 15.72 7.57 Point 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. The emission points in the table below shall be operated and maintained with the control equipment as listed in order to reduce emissions to less than or equal to the limits established in this permit (Reference: Regulation No.3, Part B, Section III.E.) Facility AIRS Control Device Pollutants Equipment ID Point Controlled SEPARATOR 004 Separator controlled by a 25' flare stack VOC, HAPs PROCESS LIMITATIONS AND RECORDS 8. 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) AIRS ID: 123/9BEB Page 2 of 7 Joi De en f Public Health and Environment Air Pollution Control Division Process/Consumption Limits Facility AIRS Process Parameter Annual Limit Equipment ID Point SEPARATOR 004 Natural gas flaring 30.4 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 9. 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) 10. 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.) 11. 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.) 12. These sources are subject to the odor requirements of Regulation No. 2. (State only enforceable) OPERATING & MAINTENANCE REQUIREMENTS 13. 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 14. The owner or operator shall demonstrate compliance with Condition 10 using EPA Method 22 to measure opacity from the flare. (Reference: Regulation No. 1, Section II.A.5). Periodic Testing Requirements 15. 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. AIRS ID: 123/9BEB Page 3 of 7 DRAFen f Public Health and Environment Air Pollution Control Division ADDITIONAL REQUIREMENTS 16. A revised Air Pollutant Emission Notice(APEN)shall be filed:(Reference: Regulation No.3, Part A, I I.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. 17. Federal regulatory program requirements (i.e. PSD, NANSR or Title V Operating Permit) shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit condition. Any relaxation that increases the potential to emit above the applicable Federal program threshold will require a full review of the source as though construction had not yet commenced on the source. The source shall not exceed the Federal program threshold until a permit is granted. (Regulation No. 3 Part D). GENERAL TERMS AND CONDITIONS 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 AIRS ID: 123/9BEB Page 4 of 7 IIIIll ol.A, De 4 ent f Public Health and Environment 5g Air Pollution Control Division 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 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: Rebecca Vasil Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Carrizo Oil & Gas, Inc. AIRS ID: 123/9BEB Page 5 of 7 D of De en f Pueame 1• Airblic PollutionH lth ControlandEnviron Divisionnt 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: htto://www.colorado.00v/cs/Satellite?c=Document C&childuagename=CDPHE- Main%2FDocument C%2FCBONAddLinkView&cid=12515993896418magename=CBONWraoper 4) The following emissions of non-criteria reportable air pollutants are estimated based upon the process limits as indicated in this permit. This information is listed to inform the operator of the Division's analysis of the specific compounds emitted if the source(s)operate at the permitted limitations. Uncontrolled Emission Are the Controlled AIRS Rate emissions Emission Point Pollutant CAS# BIN (lb/yr) reportable? Rate(Ib/yr) Benzene 71432 A 1900 Yes 100 004 Toluene 108883 C 1560 Yes 80 n-Hexane 110543 C 12540 Yes 620 5) The emission levels contained in this permit are based on the following emission factors: Weight Emission Emission CAS# Pollutant Fraction of Factors Factors Source Gas(%) Uncontrolled Controlled NOx 0.068 0.068 AP-42 lb/MMBtu Ib/MMBtu CO 0.37 AP-42 0.37 lb/MMBtu , Ib/MMBtu VOC 32.69 20678.2895 1033.9145 Engineering Ib/mmscf Ib/mmscf Calculation 71432 Benzene 0.030 62.81 3.140 Engineering Ib/mmscf Ib/mmscf Calculation 108883 Toluene 0.019 51.37 2.569 Engineering Ib/mmscf Ib/mmscf Calculation 110543 n-hexane 0.173 412.64 20.632 Engineering Ib/mmscf Ib/mmscf Calculation AIRS ID: 123/9BEB Page 6 of 7 ll I oi. De en if Public Health and Environment Air Pollution Control Division Note: The uncontrolled VOC and HAP emissions for this point were calculated using the August 2013 analysis of gas samples collected from the multiple wells.The controlled VOC and HAP emissions factors 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 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 PSD 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://ecfrtgpoaccess.bov/ 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) An Oil and Gas Industry Construction Permit Self-Certification Form is included with this permit packet. Please use this form to complete the self-certification requirements as specified in the permit conditions. Further guidance on self-certification can be found on our website at: www colorado.qov/cdphe/oi Igasperm its AIRS ID: 123/9BEB Page 7 of 7 Construction Permit Application Preliminary Analysis Summary Section 1 —Applicant Information Company Name: Carrizo Oil&Gas, Inc. Permit Number: 13WE2786 Source Location: SESW Section 17 T9N R60W,Weld County (Attainment) Description Separator with a 25' flare stack AIRS ID: 13WE2786 Date: February 10`h 2014 Review Engineer: Rebecca Vasil Control Engineer: Chris Laplante Section 2—Action Completed Grandfathered Modification APEN Required/Permit Exempt X CP1 Transfer of Ownership APEN Exempt/Permit Exempt Section 3—Applicant Completeness Review Was the correct APEN submitted for this source type? X Yes No Is the APEN signed with an original signature? X Yes No Was the APEN filled out completely? X Yes No Did the applicant submit all required paperwork? X Yes No Did the applicant provide ample information to determine emission rates? X Yes No If you answered"no"to any of the above, when did you mail an Information Request letter to the source? On what date was this application complete? September 20th 2013 Section 4—Source Description AIRS Point Equipment Description 004 Separator controlled by a 25' flare stack. Flare has a minimum combustion efficiency of 95%. The flare is not enclosed. Is this a portable source? Yes X No Is this location in a non-attainment area for any criteria Yes X No pollutant? If"yes", for what pollutant? PM,o CO 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 PKo 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 Yes X No Regulation 7, Sections XII and XVII.C may apply) Page 1 Section 5—Emission Estimate Information AIRS Point Emission Factor Source 004 Site-specific using VOC weight fraction (Refer to Section 14 for calculations) Did the applicant provide actual process data for the emission inventory? X Yes No Basis for Potential to Emit(PTEI AIRS Point Process Consumption/Throughput/Production 004 30.4 MMscf/yr Basis for Actual Emissions Reported During this APEN Filing(Reported to Inventory) AIRS Point Process Consumption/Throughput/Production Data Year 004 30.4 MMscf/yr 2013 Basis for Permitted Emissions(Permit Limitsl AIRS Point Process Consumption/Throughput/Production 004 30.4 MMscf/yr Does this facility use control devices? X Yes No AIRS Point Process Control Device Description % Reduction Granted 004 01 Open flare 95 • Section 6—Emission Summary (tons per year) Point NO„ VOC CO SOx PM10 Single Total HAP HAP PTE: 004 1.39 314.31 7.57 0.05 — 6.27 1.73 (n-hexane) Uncontrolled point 004 1.39 314.31 7.57 0.05 — 6'27 1.73 source emission rate: (n-hexane) Controlled point 004 1.39 15.72 7.57 0.05 - 0.31 0.09 source emission rate: (n-hexane) Section 7—Non-Criteria/Hazardous Air Pollutants Uncontrolled Are the Controlled Emission Pollutant CAS# BIN Emission Rate emission. (lb/yr) reportable? Rate(iblyr) Benzene 71432 A 1900 Yes 100 Toluene 108883 C 1560 Yes 80 n-Hexane 110543 C 12540 Yes 620 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 X Yes No standard? If"yes", complete the information listed below AIRS Point Process Pollutant Regulatory Basis Test Method 004 01 VOC, State only requirement Site specific gas HAPS analysis Page 2 Section 9—Source Classification What is this facility classification? True X Synthetic Major Minor Minor Classification relates to what programs? X Title V X PSD NA NSR X MACT Is this a modification to an existing permit? Yes X No If"yes"what kind of modification? Minor Synthetic Major Minor Section 10—Public Comment Does this permit require public comment per CAQCC Regulation 3? X Yes No If"yes",for which pollutants?Why? VOC, HAPS For Reg. 3, Part B, III.C.1.a (emissions increase>25/50 tpy)? X Yes No For Reg. 3, Part B, III.C.1.c.iii (subject to MACT)? Yes X No For Reg. 3, Part B, III.C.1.d (synthetic minor emission limits)? X Yes No Section 11 —Modeling Is modeling required to demonstrate compliance with National Ambient Yes X No Air Quality Standards (NAAQS)? If"yes", for which pollutants?Why? NOx emissions are less than 40 TPY. AIRS Point Section 12—Regulatory Review Regulation 1 -Particulate, Smoke, Carbon Monoxide and Sulfur Dioxide Section II.A.1 - Except as provided in paragraphs 2 through 6 below, no owner or operator of a source shall allow or cause the emission into the atmosphere of any air pollutant which is in excess of 20% opacity. This standard is based on 24 consecutive opacity readings taken at 15-second intervals for six minutes. The approved reference test method for visible emissions measurement is EPA Method 9 (40 CFR, Part 60, Appendix 004 A(July, 1992)) in all subsections of Section II. A and B of this regulation. Section II.A.5-Smokeless Flare or Flares for the Combustion of Waste Gases No owner or operator of a smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the atmosphere of any air pollutant which is in excess of 30% opacity for a period or periods aggregating more than six minutes in any sixty consecutive minutes. Regulation 2—Odor Section I.A -No person, wherever located, shall cause or allow the emission of odorous air contaminants from any single source such as to result in detectable odors which are 004 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 004 Criteria Pollutants: Applicant is required to file an APEN since emissions exceed tons per year VOC Part B—Construction Permit Exemptions 004 Applicant is required to obtain a permit since uncontrolled VOC emissions from this facility are greater than the 5.0 TPY threshold (Reg. 3, Part B, Section II.D.3.a) Regulation 6-New Source Performance Standards 004 None Regulation 7—Volatile Organic Compounds 004 None Regulation 8—Hazardous Air Pollutants 004 None Page 3 Section 13—Aerometric Information Retrieval System Coding Information Point Process Process Description Emission Pollutant/ Fugitive Emission Factor Control Factor CAS# (YIN) Source (/o) 20678.2895 VOC No Engineering 95 lb/MMscf Calculation 0.068 NOx No AP-42, NA Ib/MMBtu Table 13.5-1 0.37 AP-42, 01 Flare lb/MMBtu CO No Table 13.5-1 NA 004 62.81 Benzene No Engineering 95 Ib/MMscf Calculation 51.37 Toluene No Engineering 95 lb/MMscf Calculation 412.64 n-hexane No Engineering 95 lb/MMscf Calculation SCC 31000206-Flares Section 14—Miscellaneous Application Notes AIRS Point 004 Flare Emissions were calculated using VOC wt fraction. (scf/hr) *(Ib/Ib-mol)*(%fraction from sales gas analysis)/(379.4 scf/Ib-mol) = lb/hr*(hr/yr)/2000 IbTT) = TPY VOC= (314.31 TPY*2000 Ib/T)/(30.4 mmscf/yr=20678.2895 lb/mmscf NOx and CO(from AP-42, Chapter 13, Table 13.5-1 (NOx=0.068 lb/mmbtu; CO=0.37 lb/mmbtu) SO2 emissions based on AP-42 Table 1.4-2(SO2 = 0.00037 lb/MMBtu) Emission factors for HAPS are: To calculate emission factors, take the emissions(Ib/yr)and divide it by total throughput(mmscf/yr). Benzene=(1900 Ib/yr)/30.4 mmscf/yr=62.81 lb/mmscf Toluene=(1560 Ib/yr)/30.4 mmscf/yr= 51.37 lb/mmscf n-hexane= (12540 Ib/yr)/30.4 mmscf/yr=412.64 lb/mmscf Emissions generated from the flare are: An extended gas analysis was provided in the application dated 08/6/2013. The gas analysis was perfomed less than a year of submittal.An updated extended gas analysis will not be required because: -an extended gas analysis was performed within a year of this submittal and included with this package Page 4 II A STATE OF COLORADO .co`° N� COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT �_ AIR POLLUTION CONTROL DIVISION 7, + TELEPHONE:(303)692-3150 + + •1896• CONSTRUCTION PERMIT PERMIT NO: 1 3WE2787 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 the Nelson 17 Multi-Pad, located in the SESW of Section 17, Township 9N, Range 60W, in Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Description Equipment ID Point COMBUSTOR 005 Cimarron 48" enclosed 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 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 www.cdphe.state.co.us/ap/downloadforms.html. 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 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 AIRS ID: 123/9BEB Page 1 of 7 Wellhead Version 2012-1 DitAiF en f Public Health and Environment Air Pollution Control Division 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 following information for all permitted equipment except fugitive emissions from equipment leaks shall be provided to the Division within fifteen (15) days after issuance of permit. • manufacturer • model number • serial number This information shall be included with the Notice of Startup submitted for the equipment. (Reference: Regulation No. 3, Part B, III.E.) 6. 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 7. Emissions of air pollutants shall not exceed the following limitations (as calculated in the Division's preliminary analysis). (Reference: Regulation No. 3, Part B, Section II.A.4) Annual Limits: Facility AIRS Tons per Year Equipment ID Point NO, VOC CO Emission Type COMBUSTOR 005 0.51 --- 2.8 Point Source 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. AIRS ID: 123/9BEB Page 2 of 7 IPo1 De en f Public Health and Environment Air Pollution Control Division PROCESS LIMITATIONS AND RECORDS 8. 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 COMBUSTOR 005 Natural gas flaring 4.7 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 9. 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) 10. 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.) 11. 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.) 12. These sources are subject to the odor requirements of Regulation No. 2. (State only enforceable) OPERATING & MAINTENANCE REQUIREMENTS 13. 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 14. The owner or operator shall demonstrate compliance with Condition 11 using EPA Method 9 to measure opacity from the flare. (Reference: Regulation No. 1, Section II.A.5). AIRS ID: 123/9BEB Page 3 of 7 D RAFen f Public Health and Environment Air Pollution Control Division ADDITIONAL REQUIREMENTS 15. 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. 16. Federal regulatory program requirements (i.e. PSD, NANSR or Title V Operating Permit) shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit condition. Any relaxation that increases the potential to emit above the applicable Federal program threshold will require a full review of the source as though construction had not yet commenced on the source. The source shall not exceed the Federal program threshold until a permit is granted. (Regulation No. 3 Part D). GENERAL TERMS AND CONDITIONS 17. 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 11.8 upon a request for transfer of ownership and the submittal of a revised APEN and the required fee. 18. 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. 19. 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 AIRS ID: 123/9BEB Page 4 of 7 ID 11ol.A ) De .t ent +f Public Health and Environment Air Pollution Control Division 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. 20. 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. 21. 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. 22. 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. 23. 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: Rebecca Vasil Permit Engineer Permit History Issuance Date Description Issuance 1 This Issuance Issued to Carrizo Oil & Gas, Inc. AIRS ID: 123/9BEB Page 5 of 7 ■ ■ RA Fen f Public Health and Environment Air Pollution Control Division Notes to Permit Holder: 1) The permit holder is required to pay fees for the processing time for this permit.An invoice for these fees will be issued after the permit is issued.The permit holder shall pay the invoice within 30 days of receipt of the invoice. Failure to pay the invoice will result in revocation of this permit(Reference:Regulation No.3, Part A, Section VI.B.) 2) The production or raw material processing limits and emission limits contained in this permit are based on the consumption rates requested in the permit application. These limits may be revised upon request of the permittee providing there is no exceedance of any specific emission control regulation or any ambient air quality standard. A revised air pollution emission notice (APEN) and application form must be submitted with a request for a permit revision. 3) This source is subject to the Common Provisions Regulation Part II, Subpart E, Affirmative Defense Provision for Excess Emissions During Malfunctions. The permittee shall notify the Division of any malfunction condition which causes a violation of any emission limit or limits stated in this permit as soon as possible, but no later than noon of the next working day, followed by written notice to the Division addressing all of the criteria set forth in Part II.E.1 of the Common Provisions Regulation. See: http://www.colorado.aov/cs/Satellite?c=Document C&childpaaename=CDPHE- Main%2FDocument C%2FCBONAddLinkView&cid=1251599389641&paoename=CBONWrapper 4) The following emissions of non-criteria reportable air pollutants are estimated based upon the process limits as indicated in this permit. This information is listed to inform the operator of the Division's analysis of the specific compounds emitted if the source(s) operate at the permitted limitations. Uncontrolled Emission Are the Controlled AIRS Rate emissions Emission Point Pollutant CAS# BIN (Ibyr) reportable? Rate(Ib/yr) Benzene 71432 A NA NA NA 005 n-Hexane 110543 C NA NA NA 5) The emission levels contained in this permit are based on the following emission factors: Emission Factors Emission Factors CAS# Pollutant Uncontrolled Controlled Source NOx 0.068 lb/MMBtu 0.068 lb/MMBtu AP-42, Table 13.5-1 CO 0.37 lb/MMBtu 0.37 lb/MMBtu AP-42, Table 13.5-1 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 PSD Synthetic Minor Source of: VOC AIRS ID: 123/9BEB Page 6 of 7 ol. .eta De en f Public Health and Environment Air Pollution Control Division 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 Subpart A—Subpart Z MACT 63.600-63.1199 Subpart PA—Subpart DDD MACT 63.1200-63.1439 Subpart EEE—Subpart PPP MACT 63.1440-63.6175 Subpart QQQ—Subpart YYYY MACT 63.6580-63.8830 Subpart ZZZZ—Subpart MMMMM MACT 63.8980-End Subpart NNNNN—Subpart XXXXXX 9) An Oil and Gas Industry Construction Permit Self-Certification Form is included with this permit packet. Please use this form to complete the self-certification requirements as specified in the permit conditions. Further guidance on self-certification can be found on our website at: www.colorado qov/cdphe/oilgasperm its AIRS ID: 123/9BEB Page 7 of 7 Construction Permit Application Preliminary Analysis Summary Section 1 —Applicant Information Company Name: Carrizo Oil &Gas, Inc. Permit Number: 13WE2787 Source Location: SESW Section 17 T9N R60W,Weld county (attainment) Equipment Description: Tank Vapor Control AIRS ID: 123-9BEB-005 Date: February 14th 2014 Review Engineer: Rebecca Vasil Control Engineer: Chris Laplante Section 2—Action Completed Grandfathered Modification 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? X Yes No Did the applicant provide ample information to determine emission rates? X Yes No If you answered "no"to any of the above, when did you mail an Information Request letter to the source? On what date was this application complete? September 20th 2013 Section 4—Source Description AIRS Point Equipment Description • 005 Combustor has a minimum combustion efficiency of 95%. The combustor is enclosed. Is this a portable source? Yes X No Is this location in a non-attainment area for any criteria Yes X No pollutant? If"yes", for what pollutant? PM10 CO 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 Yes X No Regulation 7, Sections XII and XVII.C may apply) Page 1 Section 5—Emission Estimate Information AIRS Point Emission Factor Source 005 AP-42 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 005 4.7 MMSCF/yr Basis for Actual Emissions Reported During this APEN Filing(Reported to Inventory) AIRS Point Process Consumption/Throughput/Production Data Year 005 4.7 MMSCF/yr 2013 Basis for Permitted Emissions(Permit Limits) AIRS Point Process Consumption/Throughput/Production 005 4.7 MMSCF/yr Does this facility use control devices? X Yes No AIRS Point Process Control Device Description °h Reduction Granted 005 01 Cimarron enclosed flare 95 Section 6—Emission Summa (tons per year) Point NO, VOC CO SOx PM10 Single Total HAP HAP PTE: 005 0.51 --- 2.79 — Uncontrolled point 005 0.51 2.79 — -- -- source emission rate: Controlled point 005 0.51 2.79 source emission rate: Section 7—Non-Criteria/Hazardous Air Pollutants Uncontrolled Are the Controlled Emission Pollutant CAS# BIN Emission Rate eemissionsRete lib (Ib/yr) po Benzene 71432 A 78 Yes 4 n-Hexane 110543 C 524 No 26 Note: Regulation 3, Part A, Section 11.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 Page 2 Section 9—Source Classification What is this facility classification? True X Synthetic Major Minor Minor Classification relates to what programs? X Title V X PSD NA NSR X MACT Is this a modification to an existing permit? Yes X No If"yes"what kind of modification? Minor Synthetic Major Minor Section 10—Public Comment Does this permit require public comment per CAQCC Regulation 3? X Yes No If"yes",for which pollutants?Why? VOC, HAPS For Reg. 3, Part B, III.C.1.a (emissions increase > 25/50 tpy)? X Yes No For Reg. 3, Part B, III.C.1.c.iii (subject to MACT)? Yes X No For Reg. 3, Part B, III.C.1.d (synthetic minor emission limits)? X Yes No Section 11 —Modeling Is modeling required to demonstrate compliance with National Ambient Yes X No Air Quality Standards (NAAQS)? If"yes", for which pollutants?Why? NOx emissions are less than 40 TPY. AIRS Point Section 12—Regulatory Review Regulation 1 - Particulate, Smoke, Carbon Monoxide and Sulfur Dioxide Section II.A.1 - Except as provided in paragraphs 2 through 6 below, no owner or operator of a source shall allow or cause the emission into the atmosphere of any air pollutant which is in excess of 20% opacity. This standard is based on 24 consecutive opacity readings taken at 15-second intervals for six minutes. The approved reference test method for visible emissions measurement is EPA Method 9 (40 CFR, Part 60, Appendix 005 A(July, 1992)) in all subsections of Section II. A and B of this regulation. Section ll.A.5 - Smokeless Flare or Flares for the Combustion of Waste Gases No owner or operator of a smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the atmosphere of any air pollutant which is in excess of 30%opacity for a period or periods aggregating more than six minutes in any sixty consecutive minutes. Re•ulation 2—Odor Section I.A-No person, wherever located, shall cause or allow the emission of odorous air contaminants from any single source such as to result in detectable odors which are 005 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 005 Criteria Pollutants: Applicant is required to file an APEN since emissions exceed 2 tons per year VOC Part B—Construction Permit Exemptions 005 Applicant is required to obtain a permit since uncontrolled VOC emissions from this facility are greater than the 5.0 TPY threshold(Reg. 3, Part B, Section ll.D.3.a) Regulation 6-New Source Performance Standards 005 None Regulation 7—Volatile Organic Compounds 005 None Regulation 8—Hazardous Air Pollutants 005 None Page 3 Section 13—Aerometric Information Retrieval System Coding Information Point Process Process Description Emission Pollutant/ Fugitive Emission Factor Control o Factor CAS# (Y/N) Source (/o) 0.068 AP-42, 01 Combustor Ib/MMBtu NOx No Table 13.5-1 NA 005 0.37 AP-42, Ib/MMBtu CO No Table 13.5-1 NA SCC 31000205-Flares Page 4 o w O m O G G O E o m to m C T >. b N pc CI E z b .� ' q o $ ❑ m C W m mc ..-°0 n w� W U• 07 06 O a ry o'en o o o 8 0 CO a a -' W y o a 9 Co .� mw iy .� h -EivVry o o g 54. 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