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Home My WebLink About20161553.tiff ,, CDPHE COLORADO co Department of Public Health Et Environment Dedicated to protecting and improving the health and environment of the people of Colorado RECEIVED Weld County - Clerk to the Board MAY 0 6 2016 1150O St PO Box 758 WELD COUNTY Greeley, CO 80632 COMMISSIONERS May 3, 2016 Dear Sir or Madam: On May 4, 2016, the Air Pollution Control Division will begin a 30-day public notice period for Noble Energy, Inc. - Oscar Y10 SE/4 EcoNode. A copy of this public notice and the public comment packet are enclosed. Thank you for assisting the Division by posting a copy of this public comment packet in your office. Public copies of these documents are required by Colorado Air Quality Control Commission regulations. The packet must be available for public inspection for a period of thirty (30) days from the beginning of the public notice period. Please send any comment regarding this public notice to the address below. Colorado Dept. of Public Health Et Environment APCD-SS-B1 4300 Cherry Creek Drive South Denver, Colorado 80246-1530 Attention: Clara Gonzales Regards, if Clara Gonzales Public Notice Coordinator Stationary Sources Program Air Pollution Control Division Enclosure 2016-1553 4300 Cherry Creek Drive S., Denver, CO 80246-1530 P 303-692-2000 www.colorado.gov/cdpne I /gi 7.O", John W. Hickentooper, Governor Larry Wolk,MD,MSPH, Executive Director and Chief Medical Officer 4 4 PtAIOLLZJ R-10Vi.e.AA) �G `Pu>��- L v- .*:.lsi,; 5 /1- ao/( A CDPHE Air Pollution Control Division CO Notice of a Proposed Project or Activity Warranting Public Fht Comment Website Title: Noble Energy, Inc. - Oscar Y10 SE/4 EcoNode - Weld County Notice Period Begins: May 4, 2016 Notice is hereby given that an application for a proposed project or activity has been submitted to the Colorado Air Pollution Control Division for the following source of air pollution: Applicant: Noble Energy, Inc. Facility: Oscar Y10 SE/4 EcoNode Oil and gas exploration and production site NWSE Section 10, T2N, R64W Weld County The proposed project or activity is as follows: The applicant proposes to construct an O&G exploration and production facility with an annual condensate (oil) production of 1,100,000 barrels per year. The Division has determined that this permitting action is subject to public comment per Colorado Regulation No. 3, Part B, Section III.C due to the following reason(s): • permitted emissions exceed public notice threshold values in Regulation No. 3, Part B, Section III.C.1.a (25 tpy in a non-attainment area and/or 50 tpy in an attainment area) • the source is requesting a federally enforceable limit on the potential to emit in order to avoid other requirements The Division has made a preliminary determination of approval of the application. A copy of the application, the Division's analysis, and a draft of Construction Permit 15WE0978 have been filed with the Weld County Clerk's office. A copy of the draft permit and the Division's analysis are available on the Division's website at https://www.colorado.gov/pacific/cdphe/air-permit-public-notices The Division hereby solicits submission of public comment from any interested person concerning the ability of the proposed project or activity to comply with the applicable standards and regulations of the Commission. The Division will receive and consider written public comments for thirty calendar days after the date of this Notice. Any such comment must be submitted in writing to the following addressee: Oluwaseun Ogungbenle Colorado Department of Public Health and Environment 4300 Cherry Creek Drive South, APCD-SS-B1 Denver, Colorado 80246-1530 cdphe.commentsapcd@state.co.us I A STATE OF COLORADO FLORA•• D - • -T •F P C HEALTH AND ENVIRONMENT ��'��° fig AIR POLLUTION CONTROL DIVISION (-7 ' TELEPHONE: (303) 692-3150 4. s*1876''F% CONSTRUCTION PERMIT PERMIT NO: 1 5111/E0978 Issuance 1 DATE ISSUED: ISSUED TO: Noble Energy, Inc. THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS: Oil and gas exploration and production facility known as the Oscar Y10 SE/4 EcoNode, located in the NWSE Section 10, Township 2N, Range 64W, Weld County, Colorado. THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING: Facility AIRS Equipment Point Description ID VRT VOC Bank of enclosed flares to control vapor recovery towers (VRT) Burners 006 vapors during VRU downtime. Flares have a combined minimum control efficiency of 95%. LP VOC One (1) open flare to control low-pressure (LP) separators vapors Flare 007 during VRU downtime. Flare has a minimum control efficiency of 95%. Truck Hydrocarbon Loadout to Tanker Trucks. Emissions from this Loadout 008 loadout are controlled by enclosed flares with a combined minimum combustion efficiency of 95%. Produced Seven (7) above ground 538 bbl produced water storage vessels. Water 009 Emissions from these storage vessels are controlled by enclosed flares with a combined minimum combustion efficiency of 95%. Ten (10) above ground 538 bbl atmospheric condensate storage Tank 010 vessels. Emissions from these storage vessels are controlled by Battery enclosed flares with a combined minimum combustion efficiency of 95%. THIS PERMIT IS GRANTED SUBJECT TO ALL RULES AND REGULATIONS OF THE COLORADO AIR QUALITY CONTROL COMMISSION AND THE COLORADO AIR POLLUTION PREVENTION AND CONTROL ACT C.R.S. (25-7-101 et seq), TO THOSE GENERAL TERMS AND CONDITIONS INCLUDED IN THIS DOCUMENT AND THE FOLLOWING SPECIFIC TERMS AND CONDITIONS: AIRS ID: 123/9DF0 Page 1 of 16 olorl Depa en • P 'II Health and Environment A it Pollution Control Division REQUIREMENTS - I TH•,:` - •TION 1. YOU MUST notify the Air Pollution Control Division (the Division) no later than fifteen days after commencement of operation or issuance of this permit, whichever comes later, 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 commencement of operation or issuance of this permit, whichever comes later, compliance with the conditions contained in this permit shall be demonstrated to the Division. It is the owner or operator's responsibility to self-certify compliance with the conditions. Failure to demonstrate compliance within 180 days may result in revocation of the permit. (Reference: Regulation No. 3, Part B, III.G.2). 3. Points 006 and 007: Within one hundred and eighty days (180) after issuance of this permit, the operator shall install a flow meter to monitor and record volumetric flow rate of natural gas vented from the VRT and low pressure separator. The operator shall use the gas flow rate listed in the application for actual flow rate until the flow meter is installed, not to exceed one hundred and eighty (180) days after issuance of this permit. 4. This permit shall expire if the owner or operator of the source for which this permit was issued: (i) does not commence construction/modification or operation of this source within 18 months after either, the date of issuance of this construction permit or the date on which such construction or activity was scheduled to commence as set forth in the permit application associated with this permit; (ii) discontinues construction for a period of eighteen months or more; (iii) does not complete construction within a reasonable time of the estimated completion date. The Division may grant extensions of the deadline per Regulation No. 3, Part B, III.F.4.b. (Reference: Regulation No. 3, Part B, III.F.4.) 5. 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.) 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 X VRT VOC 006 Point Burners 1.6 22.6 4.2 LP VOC Flare 007 Point AIRS ID: 123/9DF0 Page 2 of 16 Iolor y Depa en • P..•Ii Health and Environment Ikkk it Pollution Control Division Truck Loado '08 `` --- • • ° --- Point Produced 009 --- 4.9 --- Point Water Tank Battery 010 --- 28.2 --- Point See "Notes to Permit Holder"for information on emission factors and methods used to calculate limits. Facility-wide emissions of each individual hazardous air pollutant shall be less than 8.0 tpy. Facility-wide emissions of total hazardous air pollutants shall be less than 20.0 tpy. Compliance with the annual limits shall be determined by recording the facility's annual criteria pollutant emissions, (including all HAPs above the de-minimis reporting level) from each emission unit, on a rolling twelve (12) month total. By the end of each month a new twelve-month total shall be calculated based on the previous twelve months' data. The permit holder shall calculate emissions each month and keep a compliance record on site or at a local field office with site responsibility, for Division review. This rolling twelve-month total shall apply to all permitted emission units, requiring an APEN, at this facility. 8. The emission points in the table below shall be operated and maintained with the control equipment as listed in order to reduce emissions to less than or equal to the limits established in this permit (Reference: Regulation No.3, Part B, Section III.E.) Facility AIRS Pollutants Equipment Point Control Device Controlled ID VRT VOC 006 Enclosed Flares VOC and HAPs Burners LP VOC 007 Open Flare VOC and HAPs Flare Truck 008 Enclosed Flares VOC and HAPs Loadout Produced 009 Enclosed Flares VOC and HAPs Water Tank 010 Enclosed Flares VOC and HAPs Battery PROCESS LIMITATIONS AND RECORDS 9. This source shall be limited to the following maximum processing rates as listed below. Monthly records of the actual processing rates shall be maintained by the owner or operator and made available to the Division for inspection upon request. (Reference: Regulation 3, Part B, II.A.4) Process/Consumption Limits Facility AIRS Equipment Point Process Parameter Annual Limit ID AIRS ID: 123/9DF0 Page 3 of 16 mss. olor. Depa en P •li �'Health and Environment ii it Pollution Control Division w VRT VOC ++ Burners Total Gas Vented from all VRTs and LP 13.6 MMSCF/yr LP VOC 007 Separators during VRU downtime Flare Truck 008 Condensate Loaded 1,100,000 BBUyr Loadout Produced 009 Produced Water Throughput 750,000 BBL/yr Water Tank 010 Condensate Throughput 1,100,000 BBL/yr Battery 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. 10. Points 006 and 007: The owner or operator shall continuously monitor and record the volumetric flow rate of natural gas vented from the VRT and low pressure separator using a flow meter. The flow meter shall continuously measure flow rate and record total volumetric flow vented from each separator. The owner or operator shall use monthly throughput records to demonstrate compliance with the process limits specified in Condition 9 and to calculate emissions as described in this permit. STATE AND FEDERAL REGULATORY REQUIREMENTS 11. 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) 12. This source is subject to the odor requirements of Regulation No. 2. (State only enforceable) 13. Points 006, 008-010: The flare(s) covered by this permit is subject to Regulation No. 7, Section XVII.B General Provisions (State only enforceable). These requirements include, but are not limited to: • XVII.B.2.b If a combustion device is used to control emissions of volatile organic compounds to comply with Section XVII, it shall be enclosed, have no visible emissions during normal operations, and be designed so that an observer can, by means of visual observation from the outside of the enclosed combustion device, or by other means approved by the Division, determine whether it is operating properly. • XVII.B.2.d Auto-igniters: All combustion devices used to control emissions of hydrocarbons must be equipped with and operate an auto-igniter as follows: • XVII.B.2.d.(i) All combustion devices installed on or after May 1, 2014, must be equipped with an operational auto-igniter upon installation of the combustion device. • XVII.B.2.d.(ii) All combustion devices installed before May 1, 2014, must be equipped with an operational auto-igniter by or before May 1, 2016, or after the next combustion device planned shutdown, whichever comes first. AIRS ID: 123/9DF0 Page 4 of 16 olorl Depa en . P .Ii 'Health and Environment •it Pollution Control Division 14. Points 006 a • •, h- -ova -is pe :. subject to Regulation 7, Section XVII.G. (State Only). On or after August 1, 2014, gas coming off a separator, produced during normal operation from any newly constructed, hydraulically fractured, or recompleted oil and gas well, must either be routed to a gas gathering line or controlled from the date of first production by air pollution control equipment that achieves an average hydrocarbon control efficiency of 95%. If a combustion device is used, it must have a design destruction efficiency of at least 98% for hydrocarbons. 15. Point 007: The open flare covered by this permit has been approved as an alternative emissions control device under Regulation Number 7, Section XVII.B.2.e. The open flare must have no visible emissions during normal operations and be designed so that an observer can, by means of visual observation from the outside of the open flare, or by other convenient means approved by the Division, determine whether it is operating properly. This open flare must be equipped with an operational auto-igniter according to the following schedule: • All combustion devices installed on or after May 1, 2014, must be equipped with an operational auto-igniter upon installation of the combustion device; • All combustion devices installed before May 1, 2014, must be equipped with an operational auto-igniter by or before May 1, 2016, or after the next combustion device planned shutdown, whichever comes first. 16. Point 007: The open flare, which receives gas from the low pressure separators during VRU downtime, is approved as an alternative emissions control equipment per Regulation No. 7, Section XVII.B.2.e provided the following conditions are maintained: a. The open flare will not be the primary destination for emissions from the low pressure separators. b. The open flare will have no visible emissions during normal operations and be designed so that an observer can, by means of visual observation from the outside of the open flare, or by other convenient means approved by the Division, determine whether it is operating properly (Regulation 7, Section XVII.B.2.b). c. The open flare will be equipped with an operational auto-igniter upon installation of the combustion device (Regulation 7, Section XVII.B.2.d(i)). 17. Point 008: This source is located in an ozone non-attainment or attainment-maintenance area and is subject to the Reasonably Available Control Technology (RACT) requirements of Regulation Number 3, Part B, III.D.2.a. Condensate loading to truck tanks shall be conducted by submerged fill. (Reference: Regulation 3, Part B, III.E) 18. Point 008: 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. AIRS ID: 123/9DF0 Page 5 of 16 a _ olor. Depa en P .li Health and Environment it Pollution Control Division b. All co r, o, t r ches) - of be closed and latched at all times when loading operations are not active, except for periods of maintenance, gauging, or safety of personnel and equipment. c. The owner or operator shall inspect loading equipment and operations on site at the time of the inspection to ensure compliance with the conditions (a) and (b) above. The inspections shall occur at least monthly. Each inspection shall be documented in a log available to the Division on request. 19. Point 008: 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. 20. Points 009 and 010: The storage tanks covered by this permit are subject to Regulation 7, Section XVII.C emission control requirements. These requirements include, but are not limited to: Section XVII.C.1. Control and monitoring requirements for storage tanks XVII.C.1.b. Owners or operators of storage tanks with uncontrolled actual emissions of VOCs equal to or greater than six (6) tons per year based on a rolling twelve- month total must operate air pollution control equipment that achieves an average hydrocarbon control efficiency of 95%. If a combustion device is used, it must have a design destruction efficiency of at least 98% for hydrocarbons. XVII.C.1.b.(i)(a) Control requirements of Section XVII.C.1.b. must be achieved within ninety (90) days of the date that the storage tank commences operation. XVII.C.1.d. Beginning May 1, 2014, or the applicable compliance date in Section XVII.C.1.b.(i), whichever comes later, owners or operators of storage tanks subject to Section XVII.C.1. must conduct audio, visual, olfactory ("AVO") and additional visual inspections of the storage tank and any associated equipment (e.g. separator, air pollution control equipment, or other pressure reducing equipment) at the same frequency as liquids are loaded out from the storage tank. These inspections are not required more frequently than every seven (7) days but must be conducted at least every thirty one (31) days. Monitoring is not required for storage tanks or associated equipment that are unsafe, difficult, or inaccessible to monitor, as defined in Section XVII.C.1.e. The additional visual inspections must include, at a minimum: XVII.C.1.d.(i) Visual inspection of any thief hatch, pressure relief valve, or other access point to ensure that they are closed and properly sealed; XVII.C.1.d.(ii) Visual inspection or monitoring of the air pollution control equipment to ensure that it is operating, including that the pilot light is lit on combustion devices used as air pollution control equipment; XVII.C.1.d.(iii) If a combustion device is used, visual inspection of the auto-igniter and valves for piping of gas to the pilot light to ensure they are functioning properly; XVII.C.1.d.(iv) Visual inspection of the air pollution control equipment to ensure that the valves for the piping from the storage tank to the air pollution control equipment are open; and AIRS ID: 123/9DF0 Page 6 of 16 olor. Depa en : • .li 'Health and Environment �' irPoIIution ControIDivis ion XVII.C �. ..�II a _ b;.t a,-rde.rte i- -d, i ,, 'lion of the device for the presence or absence of smoke. If smoke is observed, either the equipment must be immediately shut-in to investigate the potential cause for smoke and perform repairs, as necessary, or EPA Method 22 must be conducted to determine whether visible emissions are present for a period of at least one (1) minute in fifteen (15) minutes. XVII.C.1.e. If storage tanks or associated equipment is unsafe, difficult, or inaccessible to monitor, the owner or operator is not required to monitor such equipment until it becomes feasible to do so. XVII.C.2. Capture and monitoring requirements for storage tanks that are fitted with air pollution control equipment as required by Sections XII.D. or XVII.C.1. XVII.C.2.a. Owners or operators of storage tanks must route all hydrocarbon emissions to air pollution control equipment, and must operate without venting hydrocarbon emissions from the thief hatch (or other access point to the tank) or pressure relief device during normal operation, unless venting is reasonably required for maintenance, gauging, or safety of personnel and equipment. Compliance must be achieved in accordance with the schedule in Section XVII.C.2.b.(ii). XVII.C.2.b. Owners or operators of storage tanks subject to the control requirements of Sections XII.D.2., XVII.C.1.a, or XVII.C.1.b. must develop, certify, and implement a documented Storage Tank Emission Management System ("STEM") plan to identify, evaluate, and employ appropriate control technologies, monitoring practices, operational practices, and/or other strategies designed to meet the requirements set forth in Section XVII.C.2.a. Owners or operators must update the STEM plan as necessary to achieve or maintain compliance. Owners or operators are not required to develop and implement STEM for storage tanks containing only stabilized liquids. The minimum elements of STEM are listed below. XVII.C.2.b.(i) STEM must include selected control technologies, monitoring practices, operational practices, and/or other strategies; procedures for evaluating ongoing storage tank emission capture performance; and monitoring in accordance with approved instrument monitoring methods following the applicable schedule in Section XVII.C.2.b.(ii) and Inspection Frequency in Table 1. XVII.C.2.b.(ii) Owners or operators must achieve the requirements of Sections XVII.C.2.a. and XVII.C.2.b. and begin implementing the required approved instrument monitoring method in accordance with the following schedule: XVII.C.2.b.(ii)(a) A storage tank constructed on or after May 1, 2014, must comply with the requirements of Section XVII.C.2.a. by the date the storage tank commences operation. The storage tank must comply with Section XVII.C.2.b. and implement the approved instrument monitoring method inspections within ninety (90) days of the date that the storage tank commences operation. XVII.C.2.b.(ii)(d) Following the first approved instrument monitoring method inspection, owners or operators must continue conducting approved AIRS ID: 123/9DF0 Page 7 of 16 olor. Depa en P eli `'Health and Environment it Pollution Control Division >fi= nt -ni m: pectic-' in accordance with the Inspection Frequency in Table 1. Table 1 — Storage Tank Inspections Threshold: Storage Tank Approved Instrument Phase-In Schedule Uncontrolled Actual VOC Monitoring Method Emissions (tpy) Inspection Frequency >6 and < 12 Annually January 1, 2016 > 12 and < 50 Quarterly July 1, 2015 > 50 Monthly January 1, 2015 XVII.C.2.b.(iii) Owners or operators are not required to monitor storage tanks and associated equipment that are unsafe, difficult, or inaccessible to monitor, as defined in Section XVII.C.1.e. XVII.C.2.b.(iv) STEM must include a certification by the owner or operator that the selected STEM strategy(ies) are designed to minimize emissions from storage tanks and associated equipment at the facility(ies), including thief hatches and pressure relief devices. XVII.C.3. Recordkeeping XVII.C.3. The owner or operator of each storage tank subject to Sections XII.D. or XVII.C. must maintain records of STEM, if applicable, including the plan, any updates, and the certification, and make them available to the Division upon request. In addition, for a period of two (2) years, the owner or operator must maintain records of any required monitoring and make them available to the Division upon request, including: XVII.C.3.a. The AIRS ID for the storage tank. XVII.C.3.b. The date and duration of any period where the thief hatch, pressure relief device, or other access point are found to be venting hydrocarbon emissions, except for venting that is reasonably required for maintenance, gauging, or safety of personnel and equipment. XVII.C.3.c. The date and duration of any period where the air pollution control equipment is not operating. XVII.C.3.d. Where a combustion device is being used, the date and result of any EPA Method 22 test or investigation pursuant to Section XVII.C.1.d.(v). XVII.C.3.e. The timing of and efforts made to eliminate venting, restore operation of air pollution control equipment, and mitigate visible emissions. XVII.C.3.f. A list of equipment associated with the storage tank that is designated as unsafe, difficult, or inaccessible to monitor, as described in Section XVII.C.1.e., an explanation stating why the equipment is so designated, and the plan for monitoring such equipment. AIRS ID: 123/9DF0 Page 8 of 16 olor. Depa en . P .Ii 'Health and Environment •it Pollution Control Division 21. Point 010: The flare covered by this permit is subject to Regulation No. 7, Section XII.C General Provisions (State only enforceable). If a combustion device is used to control emissions of volatile organic compounds to comply with Section XII.D, it shall be enclosed, have no visible emissions, and be designed so that an observer can, by means of visual observation from the outside of the enclosed combustion device, or by other means approved by the Division, determine whether it is operating properly. The operator shall comply with all applicable requirements of Section XII. 22. Point 010: This source is subject to the recordkeeping, monitoring, reporting and emission control requirements of Regulation 7, Section XII. The operator shall comply with all applicable requirements of Section XII. 23. Point 010: The condensate storage tanks covered by this permit are subject to Regulation 7, Section XVII.C emission control requirements. These requirements include, but are not limited to: XVII.C.1.a. Beginning May 1, 2008, owners or operators of all atmospheric condensate storage tanks with uncontrolled actual emissions of volatile organic compounds equal to or greater than 20 tons per year based on a rolling twelve-month total shall operate air pollution control equipment that has an average control efficiency of at least 95% for VOCs on such tanks. OPERATING & MAINTENANCE REQUIREMENTS 24. Points 006-010: Upon issuance of this permit, 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.) 25. Point 008: The owner or operator of a loadout which is being controlled shall: a. Install and operate the vapor collection and return equipment to collect vapors during loading of tank compartments of outbound transport trucks. b. Include devices to prevent the release of vapor from vapor recovery hoses not in use. c. Use operating procedures to ensure that hydrocarbon liquid cannot be transferred unless the vapor collection equipment is in use. d. Operate all recovery and disposal equipment at a back pressure less than the pressure relief valve setting of transport vehicles. e. Inspect thief hatch seals annually for integrity and replace as necessary. Thief hatch covers shall be weighted and properly seated. f. Inspect pressure relief devices (PRD) annually for proper operation and replace as necessary. PRDs shall be set to release at a pressure that will ensure flashing, working and breathing losses are routed to the control device under normal operating conditions. g. Document annual inspections of thief hatch seals and PRD with an indication of status, a description of any problems found, and their resolution. AIRS ID: 123/9DF0 Page 9 of 16 aik 5 olor. Depa en P •Ii Health and Environment A it Pollution Control Division COMPLIANCE TE :>'� _. N r Initial Testing Requirements 26. Points 006 and 007: The operator shall complete an initial site specific extended gas analysis of the gas vented from the VRT and the low pressure separator in order to verify the VOC, benzene, toluene, ethylbenzene, xylenes, n-hexane, and 2,2,4- trimethylpentane content (weight fraction) of this emission stream. Results of testing shall be used to calculate site-specific emission factors for the pollutants referenced above (in units of lb/MMSCF gas vented) using Division approved methods. Results of site-specific sampling and emissions factor analysis shall be submitted to the Division as part of the self-certification and demonstrate the emissions factors established through this initial testing are less than or equal to, the emissions factors established in the permit application and "Notes to Permit Holder" for this emissions point. If any site specific emissions factor developed through this sampling and analysis is greater than the emissions factors established in the permit application and "Notes to Permit Holder", the operator shall submit to the Division within 60 days a request for permit modification to update emissions factors and emissions limits specified in this permit. 27. Points 006-010: The owner or operator shall demonstrate compliance with opacity standards, using EPA Method 22 to determine the presence or absence of visible emissions. "Visible Emissions" means observations of smoke for any period or periods of duration greater than or equal to one (1) minute in any fifteen (15) minute period during normal operation. (Reference: Regulation No. 7, Section XVII.A.II) ADDITIONAL REQUIREMENTS 28. A revised Air Pollutant Emission Notice (APEN) shall be filed: (Reference: Regulation No. 3, Part A, II.C) a. Annually by April 30th whenever a significant increase in emissions occurs as follows: For any criteria pollutant: For sources emitting less than 100 tons per year, a change in actual emissions of five (5) tons per year or more, above the level reported on the last APEN; or For volatile organic compounds (VOC) and nitrogen oxides sources (NOr) in ozone nonattainment areas emitting less than 100 tons of VOC or NO, per year, a change in annual actual emissions of one (1) ton per year or more or five percent, whichever is greater, above the level reported on the last APEN; or For sources emitting 100 tons per year or more, a change in actual emissions of five percent or 50 tons per year or more, whichever is less, above the level reported on the last APEN submitted; or For any non-criteria reportable pollutant: If the emissions increase by 50% or five (5) tons per year, whichever is less, above the level reported on the last APEN submitted to the Division. b. Whenever there is a change in the owner or operator of any facility, process, or activity; or c. Whenever new control equipment is installed, or whenever a different type of control equipment replaces an existing type of control equipment; or AIRS ID: 123/9DF0 Page 10 of 16 � olor- Depa en : P •li Health and Environment it Pollution Control Division d. When _ -rm. - t- - - st - -d; or e. No later than 30 days before the existing APEN expires. 29. Federal regulatory program requirements (i.e., NANSR) shall apply to this source at any such time that this source becomes major solely by virtue of a relaxation in any permit condition. Any relaxation that increases the potential to emit above the applicable Federal program threshold will require a full review of the source as though construction had not yet commenced on the source. The source shall not exceed the Federal program threshold until a permit is granted. (Regulation No. 3 Part D). 30. MACT Subpart HH - National Emission Standards for Hazardous Air Pollutants From Oil and Natural Gas Production Facilities major stationary source requirements shall apply to this stationary source at any such time that this stationary source becomes major solely by virtue of a relaxation in any permit limitation and shall be subject to all appropriate applicable requirements of Subpart HH. (Reference: Regulation No. 8, Part E) GENERAL TERMS AND CONDITIONS 31. 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. 32. 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. 33. 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. 34. 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. 35. 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 AIRS ID: 123/9DF0 Page 11 of 16 II olor- Depa en P P ill Health and Environment •II- Pollution Control Division permit, condit .., � -•s=:-. _ -.• ,. it x-,.,, w ted • An- 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. 36. 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. 37. 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: Oluwaseun Ogungbenle Permit Engineer Permit History Issuance Date. Description Issuance 1 This Issuance Issued to Noble Energy, Inc. AIRS ID: 12319DF0 Page 12 of 16 II olor. :Depa end P 'Ii Health and Environment •it Pollution Control Division Notes to Permit Holder '- me o A se 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: http://www.colorado.gov/cs/Satellite?c=Document C&childpagename=CDPHE- Main°/02FDocument C%2FCBONAddLinkView&cid=1251599389641&pagename=CBONWrapper 4) The following emissions of non-criteria reportable air pollutants are estimated based upon the process limits as indicated in this permit. This information is listed to inform the operator of the Division's analysis of the specific compounds emitted if the source(s) operate at the permitted limitations. Uncontrolled Emission Are the Controlled AIRS Rate emissions Emission Rate Point Pollutant CAS# (lb/yr) reportable? (Ib/yr) Benzene 71432 106 No 5 n-Hexane 110543 588 Yes 33 006 Toluene 108883 161 No 8 Ethylbenzene 100414 6 No 0 Xylenes 1330207 21 No 1 Benzene 71432 2,655 Yes 133 n-Hexane 110543 15,821 Yes 791 Toluene 108883 5,012 Yes 251 007 Ethylbenzene 100414 38 No 2 Xylenes 1330207 722 Yes 36 2,2,4- 540841 777 Yes 39 Trimethylpentane Benzene 71432 698 Yes 35 n-Hexane 110543 4,061 Yes 203 008 Toluene 108883 1,045 Yes 52 Xylenes 1330207 114 No 6 2,2,4- 540841 187 No 9 Trimethylpentane AIRS ID: 123/9DF0 Page 13 of 16 olor-A Depa en °W P Ii Health and Environment F 'it Pollution Control Division Be . 4 - 263 009 n-Hexane 110543 16,500 Yes 825 Benzene 71432 2,467 Yes 123 n-Hexane 110543 14,358 Yes 718 Toluene 108883 3,693 Yes 185 010 Ethylbenzene 100414 62 No 3 Xylenes 1330207 405 Yes 20 2,2,4- 540841 550 Yes 28 Trimethylpentane 5) The emission levels contained in this permit are based on the following emission factors: Point 006: Weight Emission Emission Pollutant Fraction of Factors Factors Source Gas (%) Uncontrolled Controlled lb/MMscf lb/MMscf NOx --- 354.41 354.41 CDPHE/AP-42 CO --- 708.81 708.81 CDPHE/AP-42 VOC 65.4 66414.0882 3320.7044 HYSYS Simulation Benzene 0.14 144.285 7.2143 HYSYS Simulation Toluene 0.22 218.8259 10.9413 HYSYS Simulation Ethylbenzene 0.01 0 0 HYSYS Simulation Xylenes 0.03 28.0132 1.4007 HYSYS Simulation n-hexane 0.78 795.8575 39.7929 HYSYS Simulation Point 007: Weight Emission Emission Pollutant Fraction of Factors Factors Source Gas(%) Uncontrolled Controlled Ib/MMscf lb/MMscf NOx --- 239.19 239.19 CDPHE/AP-42 CO --- 605.73 605.73 CDPHE/AP-42 VOC 64.9 64342.2517 3217.1126 HYSYS Simulation Benzene 0.21 206.1214 10.3061 HYSYS Simulation Toluene 0.39 389.0238 19.4512 HYSYS Simulation Ethylbenzene 0.01 0 0 HYSYS Simulation Xylenes 0.06 56.0264 2.8013 HYSYS Simulation n-hexane 1.24 1227.8945 61.3947 HYSYS Simulation 2,2,4-TMP 0.06 60.3145 3.0157 HYSYS Simulation Point 008: Emission Factors - Uncontrolled Pollutant lb/BBL loaded Source VOC 0.2897 AP-42 Benzene 0.0006 AP-42 AIRS ID: 123/9DF0 Page 14 of 16 Nom,iPolor- Dea ens. P •li Health and Environment it Pollution Control Division q � . ys.�•^ •n •r Uncontrolled Pollutant lb/BBL loaded Source n-Hexane 0.0037 AP-42 Toluene 0.0009 AP-42 Xylenes 0.0001 AP-42 2,2,4-TMP 0.0002 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) = 7.88 psia M (vapor molecular weight) =60 Ib/Ib-mol T (temperature of liquid loaded) = 512.45°R The uncontrolled non-criteria reportable air pollutant (NCRP) emission factors were calculated by multiplying the mass fraction of each NCRP in the vapors by the VOC emission factor. Controlled emission factors are based on a flare efficiency of 95%. Point 009: Emission Factors Pollutant Uncontrolled Source lb/BBL Produced Water Throughput VOC 0.262 CDPHE n-Hexane 0.022 CDPHE Benzene 0.007 CDPHE Note: The controlled emissions for this point are based on the flare control efficiency of 95%. Point 010: Emission Factors Uncontrolled Pollutant lb/BBL Source Condensate Throughput VOC 1.024 HYSYS/AP-42 n-Hexane 0.0131 HYSYS/AP-42 Benzene 0.0022 HYSYS/AP-42 Toluene 0.0034 HYSYS/AP-42 Ethylbenzene 0.0001 HYSYS/AP-42 Xylenes 0.0004 HYSYS/AP-42 Note: The controlled emissions for this point 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 AIRS ID: 123/9DF0 Page 15 of 16 olor- _Depa ens P •li Health and Environment �s •it Pollution Control Division associated with thi ., or - . -g- t � --cific ion 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, CO, n-Hexane, and total HAPs PSD True Minor Source NANSR Synthetic Minor Source of VOC MACT HH Major Source Requirements: Not Applicable Area Source Requirements: 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.clov/ Part 60: Standards of Performance for New Stationary Sources NSPS 60.1-End Subpart A—Subpart KKKK NSPS Part 60, Appendixes Appendix A—Appendix I Part 63: National Emission Standards for Hazardous Air Pollutants for Source Categories MACT 63.1-63.599 Subpart A—Subpart Z MACT 63.600-63.1199 Subpart AA—Subpart DDD MACT 63.1200-63.1439 Subpart EEE—Subpart PPP MACT 63.1440-63.6175 Subpart QQQ—Subpart YYYY MACT 63.6580-63.8830 Subpart ZZZZ—Subpart MMMMM MACT 63.8980-End Subpart NNNNN—Subpart XXXXXX 9) A self certification form and guidance on how to self-certify compliance as required by this permit may be obtained online at: http://www.colorado.gov/pacific/cdphe/air-permit-self-certification AIRS ID: 123/9DF0 Page 16 of 16 Division Information Engineer: Oluwaseun Ogungbenle Control Engineer: Chris Laplante Review Date: 10/05/2015 Application Date: 05/22/2015 Facility Identifiers Permit No. 15WE0978 Potentially located in ozone nonattainment area AIRS County# 123 'Weld Facility# 9DF0 Facility Type: exploration and production facility Located in the 8-hour non-attainment area? O True Minor Synthetic Minor for: P VOC r NOx F CO Administrative Information Company Name: Noble Energy, Inc. Source Name: Oscar Y10 SE/4 EcoNode Source Location: NWSE Section 10, Township 2N, Range 64W SIC: 1311 Address 1: Noble Energy, Inc. Mailing Address 2: 1625 Broadway, Suite 2200 Address City,State Zip Denver, CO 80202 Name: Mike Putney Person To Phone: 303-228-4385 Contact Fax: 303-228-4280 Email: Mike.putney@nblenergy.com 'Requested Action Self Certification Required? Yes Issuance Number: 1 Source Description: Oil and gas exploration and production facility known as the Oscar Y10 SE/4 EcoNode, located in the NWSE Section 10,Township 2N, Range 64W,Weld County,Colorado. Point Name Type Control Action VRT VOC Newly 006 Separator Venting Flare reported Burners source LP VOC Newly 007 Flare Separator Venting Flare reported source Truck Newly 008 Loadout Loadout Flare reported source Produced Newly 009 Water Water Tanks Flare reported source Newly 010 Tank Battery Condensate Tanks Flare reported source 006 Bank of four(4)enclosed flares to control VRT vapors during VRU downtime.Flares have a combined minimum control efficiency of 95%. Equipment Description This source vents natural gas from: a well head separator Emissions from this source are: routed to a flare Natural gas venting from a well head separator.Emissions from this source are routed to a flare. t Calculations Emission Calculation Method EPA Emission Inventory Improvement Program Publication:Volume II,Chapter 10-Displacement Equation(10.4-3) Ex=Q*MW*Xx/C Ex=emissions of pollutant x Q=Volumetric flow rateNolume of gas processed MW=Molecular weight of gas=SG of gas*MW of air Xx=mass fraction of x in gas C=molar volume of ideal gas(379 scf/lb-mol)at 60F and 1 atm Throughput(Q) 0.73362 MMscf/yr 83.74657534 scf/hr MW 38.49704454 Ib/Ib-mol 0.002009918 MMscf/d mole% MW Ibx/Ibmol mass fraction lb/hr lb/yr tpy Helium 0.00 4.0026 0.000 0.000 0.00 0.00 0.00 CO, 3.49 44.01 1.536 0.040 0.34 2973.09 1.49 N2 0.11 28.013 0.031 0.001 0.01 59.65 0.03 methane 17.59 16.041 2.822 0.073 0.62 5461.72 2.73 ethane 29.73 30.063 8.938 0.232 1.97 17300.52 8.65 propane 30.95 44.092 13.646 0.354 3.02 26415.11 13.21 isobutane 3.75 58.118 2.179 0.057 0.48 4218.65 2.11 n-butane 9.25 58.118 5.376 0.140 1.19 10406.01 5.20 isopentane 1.77 72.114 1.276 0.033 0.28 2470.73 1.24 n-pentane 2.03 72.114 1.464 0.038 0.32 2833.66 1.42 cyclopentane 0.48 70.13 0.337 0.009 0.07 651.59 0.33 n-Hexane 0.35 86.18 0.302 0.008 0.07 583.86 0.29 cyclohexane 0.00 84.16 0.000 0.000 0.00 0.00 0.00 Other hexanes 0.00 86.18 0.000 0.000 0.00 0.00 0.00 heptanes 0.24 100.21 0.241 0.006 0.05 465.54 0.23 methylcyclohexane 0.00 98.19 0.000 0.000 0.00 0.00 0.00 224-TMP 0.01 114.23 0.011 0.000 0.00 22.11 0.01 Benzene 0.07 78.12 0.055 0.001 0.01 105.85 0.05 Toluene 0.09 92.15 0.083 0.002 0.02 160.54 0.08 Ethylbenzene 0.00 106.17 0.000 0.000 0.00 0.00 0.00 Xylenes 0.01 106.17 0.011 0.000 0.00 20.55 0.01 C8+Heavies 0.04 460.9599031 0.190 0.005 0.04 368.51 0.18 VOC mass fractior 0.654 Total VOC(Uncontra 24.36 Notes Mole%,MW,and mass fractions predicted from the HYSYS simulation based on inputs from four(4)high pressure separator condensate samples taken at the Oscar Y10 SE/4 Econode on 03/30/2015. . Emissions are based on 8760 hours of operation per year. I calculated the average MW of C8+based on the average MW on the analysis for the gas. 15 W E0978.CP1.xlsm 006 Bank of four(4)enclosed flares to control VRT vapors during VRU downtime.Flares have a combined minimum control efficiency of 95%. Flaring Information Equipment Description Flare to combust VRT gas during VRU downtime. Manufacturer Cimarron Model 48'Flare Stack Serial Number TBD Gas Heating Value 2116 Btu/scf Throughput 1552.33992 MMBtu/yr i VRU Information Equipment Description Make Model Requested Control Efficiency Annual Bypass Time Backup Overall Control 95.00% Combustion emission factor source: AP-42:Chapter 13.5 0.004 jib NOx/lb VOC 0.0094 Ilb CO/lb VOC Emissions Summary Table Pollutant Uncontrolled Emission Factor Controlled Emission Factor Uncontrolled Emissions Controlled Emissions Source V0C 66414 lb/MMscf 3320.70 lb/MMscf 24.4 tpy 1.2 tpy HYSYS Simulation N0x 0.004 Ib/Ib-V0C 0.004 Ib/Ib-V0C 0.003 tpy 0.003 tpy CDPHE CO 0.01 Ib/Ib-V0C 0.01 Ib/Ib-V0C 0.01 tpy 0.01 tpy CDPHE Benzene 144.28 lb/MMscf 7.21 lb/MMscf 106 lb/yr 5 lb/yr HYSYS Simulation n-Hexane 795.86 lb/MMscf 39.7929 lb/MMscf 584 lb/yr 29 lb/yr HYSYS Simulation Toluene 218.826 lb/MMscf 10.9413 lb/MMscf 161 lb/yr 8 lb/yr HYSYS Simulation Xylenes 28.013 lb/MMscf 1.4007 lb/MMscf 21 lb/yr 1 lb/yr HYSYS Simulation Ethylbenzene 0.000 lb/MMscf 0.0000 lb/MMscf 0 lb/yr 0 lb/yr HYSYS Simulation Regulatory Applicability AQCC Regulation 1 This source is subject to the opacity requirements for flares in Section II.A.5:'No owner or operator of a smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the atmosphere of any air pollutant which is in excess of 30%opacity.' AQCC Regulation 2 Section I.A applies to all emission sources."No person,wherever located,shall cause or allow the emission of odorous air contaminants from any single source such as to result in detectable odors which are measured in excess of the following limits: For areas used predominantly for residential or commercial purposes it is a violation if odors are detected after the odorous air has been diluted with seven(7)or more volumes of odor free air." AQCC Regulation 7 Was the well newly constructed,hydraulically fractured,or recompleted on or after August 1,2014? yes This separator is subject to Reg 7,Section XVII.G.and control requirements of Reg 7,Section XVII.B.2 15WE0978.CP1.xlsm E0978.CP1.xlsm 007 One(1)open flare to control low-pressure(LP)separator vapors during VRU downtime.Flare has a minimum control efficiency of 95%. Equipment Description This source vents natural gas from: a well head separator Emissions from this source are: routed to a flare Natural gas venting from a well head separator.Emissions from this source are routed to a flare. Calculations Emission Calculation Method EPA Emission Inventory Improvement Program Publication:Volume II,Chapter 10-Displacement Equation(10.4-3) Ex=O MW`Xx/C Ex=emissions of pollutant x Q=Volumetric flow rate/volume of gas processed MW=Molecular weight of gas=SG of gas*MW of air Xx=mass fraction of x in gas C=molar volume of ideal gas(379 scf/lb-mol)at 60F and 1 atm Throughput(Q) 12.877 MMscf/yr 1469.977169 scf/hr MW 37.569 Ib/Ib-mol 0.035279452 MMscf/d mole% MW Ibx/Ibmol mass fraction lb/hr lb/yr tpy Helium 0.00 4.0026 0.000 0.000 0.00 0.00 0.00 CO2 3.49 44.01 1.536 0.041 5.96 52185.79 26.09 N2 0.37 28.013 0.104 0.003 0.40 3521.57 1.76 methane 25.71 16.041 4.124 0.110 16.00 140122.86 70.06 ethane 24.68 30.063 7.420 0.197 28.78 252088.46 126.04 propane 26.14 44.092 11.526 0.307 44.70 391598.36 195.80 isobutane 3.55 58.118 2.063 0.055 8.00 70099.43 35.05 n-butane 9.28 58.118 5.393 0.144 20.92 183245.84 91.62 isopentane 2.04 72.114 1.471 0.039 5.71 49983.34 24.99 n-pentane 2.51 72.114 1.810 0.048 7.02 61499.10 30.75 cyclopentane 0.70 70.13 0.491 0.013 1.90 16679.28 8.34 n-Hexane 0.54 86.18 0.465 0.012 1.80 15811.60 7.91 cyclohexane 0.00 84.16 0.000 0.000 0.00 0.00 0.00 Other hexanes 0.00 86.18 0.000 0.000 0.00 0.00 0.00 heptanes 0.45 100.21 0.451 0.012 1.75 15321.42 7.66 methylcyclohexane 0.00 98.19 0.000 0.000 0.00 0.00 0.00 224-TMP 0.02 114.23 0.023 0.001 0.09 776.22 0.39 Benzene 0.10 78.12 0.078 0.002 0.30 2654.22 1.33 Toluene 0.16 92.15 0.147 0.004 0.57 5009.46 2.50 Ethylbenzene 0.00 106.17 0.000 0.000 0.00 0.00 0.00 Xylenes 0.02 106.17 0.021 0.001 0.08 721.45 0.36 C8+Heavies 0.04 1078.62276 0.445 0.012 1.73 15135.44 7.57 VOC mass fraction 0.649 Total VOC(Uncontro 414.27 Notes Mole%,MW,and mass fractions predicted from the HYSYS simulation based on inputs from four(4)high pressure separator condensate samples taken at the Oscar Y10 SE/4 Econode on 03/30/2015. Emissions are based on 8760 hours of operation per year. I calculated the average MW of C8+based on the average MW on the analysis for the gas. 15WE0978.CP1.xlsm 007 One(1)open flare to control low-pressure(LP)separator vapors during VRU downtime.Flare has a minimum control efficiency of 95%. Flaring Information Equipment Description Flare to combust low-pressure separator gas during VRU downtime. Manufacturer Flare Industries Model 6"x 30' Serial Number TBD Gas Heating Value 2060.8 Btu/scf Throughput 26536.9216 MMBtu/yr VRU Information Equipment Description Make Model Requested Control Efficiency Annual Bypass Time Backup Overall Control 95.00%i Combustion emission factor source: AP-42:Chapter 13.5 0.004 IIb NOx/lb VOC 0.0094 JIb CO/lb VOC Emissions Summary Table Pollutant Uncontrolled Emission Factor Controlled Emission Factor Uncontrolled Emissions Controlled Emissions Source VOC 64342 Ib/MMscf 3217.11 lb/MMscf 414.3 tpy 20.7 tpy HYSYS Simulation NOx 0.00 Ib/Ib-VOC 0.00 lb/lb-VOC 0.05 tpy 0.0 tpy CDPHE CO 0.01 Ib/Ib-VOC 0.01 Ib/Ib-VOC 0.12 tpy 0.1 tpy CDPHE Benzene 206.12 Ib/MMscf 10.31 Ib/MMscf 2654 lb/yr 133 lb/yr HYSYS Simulation n-Hexane 1227.89 Ib/MMscf 61.3947 Ib/MMscf 15812 lb/yr 791 lb/yr HYSYS Simulation Toluene 389.024 Ib/MMscf 19.4512 lb/MMscf 5009 lb/yr 250 lb/yr HYSYS Simulation Xylenes 56.026 Ib/MMscf 2.8013 lb/MMscf 721 lb/yr 36 lb/yr HYSYS Simulation Ethylbenzene 0.000 lb/MMscf 0.0000 lb/MMscf 0 lb/yr 0 lb/yr HYSYS Simulation Regulatory Applicability AQCC Regulation 1 This source is subject to the opacity requirements for flares in Section II.A.5:'No owner or operator of a smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the atmosphere of any air pollutant which is in excess of 30%opacity.' AQCC Regulation 2 Section I.A applies to all emission sources."No person,wherever located,shall cause or allow the emission of odorous air contaminants from any single source such as to result in detectable odors which are measured in excess of the following limits: For areas used predominantly for residential or commercial purposes it is a violation if odors are detected after the odorous air has been diluted with seven(7)or more volumes of odor free air." AQCC Regulation 7 Was the well newly constructed,hydraulically fractured,or recompleted on or after August 1,2014? yes This separator is subject to Reg 7,Section XVII.G.and control requirements of Reg 7,Section XVII.B.2 15WE0978.CP1.xlsm 008 Hydrocarbon Loadout to Tanker Trucks The table of inputs below enables you to calculate the loading loss emissions factor"L". If you choose to use a state default emissions Calculations factor,you may enter is directly into cell B14 L= 12.46*S*P*M/T(AP-42: Chapter 5.2, Equation 1) in units lb/1,000 gallons which will overwrite L= loading losses in lb per 1000 gallons loaded Factor Meaning Value Units Source S Saturation Factor 0.6 AP-42 P True Vapor Pressure 7.88 psia Sales Oil Analysis M Molecular Weight of Var 60 lb/lb-mole AP-42 T Liquid Temperature 512.45 deg. R Field Data L 6.90 lb/103 gal 2.90E-01 lb/bbl Annual requested Throughput 1100000 BBL/yr 46200000 gal/yr Annual requested VOC emissions 318667 lb/yr 159.33 tpy Control: Flare Efficiency: 95.00% NCRPs Component Mass Fraction If the operator provides HAP speciation from a stable "sales oil" Benzene 0.0022 analysis,enter the mass fraction from this data. Alternatively,if n-hexane 0.0128 the operator modeled a pressurized oil to develop a site specific Toluene 0.0032 emissions factor,enter the modeled mass fraction for the Xylenes 0.0004 Source: Pressurized Liquids Analysis Emissions Summary Table Pollutant Emission Factor Uncontrolled Emissions Controlled Emissions Source VOC 0.2897 lb/bbl 159.3 tpy 8.0 tpy AP-42 Benzene 0.0006 lb/bbl 689 lb/yr 34 lb/yr AP-42 n-Hexane 0.0037 lb/bbl 4091 lb/yr 205 lb/yr AP-42 Toluene 0.0009 lb/bbl 1034 lb/yr 52 lb/yr AP-42 Xylenes 0.0001 lb/bbl 129 lb/yr 6 lb/yr AP-42 Regulatory Review 'Regulation 3-APEN and Permitting Requirements Is this site considered an exploration and production location (e.g.well pad)? Yes If yes, review the following two exemptions for applicability: Does the operator unload less than 10,000 gallons(238 BBLs)per day of crude oil on an annual average l No If yes,this emissions point is categorically exempt from permit requirements per Regulation 3,Part B,Section II.D.1.1 Does this operator unload less than 6,750 bbls per year of condensate via splash fill or 16,308 bbls per year of condensate via submerged fill procedure? No If yes,this emissions point is categorically exempt from permit requirements per Regulation 3,Part B,Section II.D.1.1 Seven (7)above ground 538 bbl produced water storage vessels. Emissions from these 009 storage vessels are controlled by enclosed flares with a minimum combustion efficiency of 95% Emissions Calculations Requsted Throughput 750000 bbl Control Flare Efficiency 95.00% Emissions Summary Table Pollutant Emission Factor Uncontrolled Emissions Controlled Emissions Source VOC 0.262 lb/bbl 98.25 tpy 4.91 tpy CDPHE Benzene 0.007 lb/bbl 5250 lb/yr 262.5 lb/yr CDPHE n-Hexane 0.022 lb/bbl 16500 lb/yr 825 lb/yr CDPHE Regulatory Review 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, 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 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. Ten (10)above ground 538 bbl atmospheric condensate storage vessels. Emissions from 010 these storage vessels are controlled by enclosed flares with a minimum combustion efficiency of 95%. Requsted Throughput 1100000 bbl Control Flare Efficiency 95.00% Emissions Summary Table Pollutant Emission Factor Uncontrolled Emissions Controlled Emissions Source VOC 1.024 lb/bbl 563.2 tpy 28.2 tpy HYSYS/AP-42 Benzene 0.0022 lb/bbl 2420 lb/yr 121 lb/yr HYSYS/AP-42 Toluene 0.0034 lb/bbl 3740 lb/yr 187 lb/yr HYSYS/AP-42 Ethylbenzene 0.0001 lb/bbl 110 lb/yr 5.5 lb/yr HYSYS/AP-42 Xylenes 0.0004 lb/bbl 440 lb/yr 22 lb/yr HYSYS/AP-42 2,2,4-TMP 0.0005 lb/bbl 550 lb/yr 27.5 lb/yr HYSYS/AP-42 n-Hexane 0.0131 lb/bbl 14410 lb/yr 720.5 lb/yr HYSYS/AP-42 Regulatory Review 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, 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 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 6- New Source Performance Standards NSPS Kb: for storage vessels greater than 19,800 gallons after 7/23/84. NSPS Kb does not apply to these vessels since they are located at an E&P site,which is prior to the point of custody transfer. NSPS OOOO:for storage vessels in the natural gas production,transmission, and processing segments. This source is not subject because each tank emits less than 6 tpy VOC. Regulation 7 Volatile Organic Compounds XII. VOLATILE ORGANIC COMPOUND EMISSIONS FROM OIL AND GAS OPERATIONS (Applicant is subject to the emission control requirements for condensate tanks because it is located in a nonattainment area.) XVII.C STATEWIDE CONTROLS FOR OIL AND GAS OPERATIONS... (Applicant is currently subject to this section since actual uncontrolled emissions exceed 20 tpy of VOC). r., y o d di U C.J as 0 .� 'C' E o 0o n ti °c O off. > aci ¢ N Ca D ti z U U M M M aC-� 0 . y 3 QA � � E r. J O a C 0 0 0 UO. U O O t 0 C y. 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Addendum Form Page 1 Source Name: Oscar Y10 SE/4 Econode Emissions Source AIRS ID': 1./R/ otp r„o/era Wells Services by this Storage Tank or Tank Battery (E&P Sites Only) API Number Name of Well Newly Reported Well 05-123-37944 Oscar Y10-73HN 05-123-38204 Oscar Y10-74-1HC 05- 123-38203 Oscar Y10-74-1HN 05-123-38205 Oscar Y10-74HN 05-123-38202 Oscar Y10-75-1HC 05- 123-38200 Oscar Y10-75-1HN 05-123-38201 Oscar Y10-75HN 05-123-37943 Oscar Y11-79HN - - ❑ Footnotes: 1 Attach this addendum to associated APEN form when needed to report additional wells. 2 If this is a newly report source that has not been assigned an AIRS ID by the APCD, enter N/A Form APCD-212 APEN-Addendum Form Tanks May 2015 L -. 'b a) �" O O O a) 3 C >_' is _o ° a; a) Z z Z > c o o E o CO O n 3 >, w^ ,0 K .. a o 00 -2 U U iU! El CU In R N C ;b j U Z C y N N N 4'l -7 Z ° a a C• w0 O ... 0 ill al O\ _ M M M Q; 0 v� n u a) ° \ y '. 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Addendum Form Page 1 Source Name: Oscar Y10 SE/4 Econode Emissions Source AIRS ID' 1,23 Wells Services by this Storage Tank or Tank Battery (E&P Sites Only) API Number Name of Well Newly Reported Well 05-123-37944 Oscar Y10-73HN 05-123—38204 Oscar Y10-74-1HC 05-123-38203 Oscar Y10-74-1HN 05- 123-38205 Oscar Y10-7411N 05-123-38202 Oscar Y10-75-1HC 05-123-38200 Oscar Y10-75-1HN 05-123-38201 Oscar Y10-75HN 05-123-37943 Oscar Y11-79HN TBD- - Buffalo Ridge Y15-715 TBD- - Buffalo Ridge Y15-720 TBD- - Buffalo Ridge Y15-725 TBD- - Buffalo Ridge Y15-730 TBD- - Buffalo Ridge Y15-735 TBD- - Buffalo Ridge Y15-740 TBD- - Buffalo Ridge Y15-745 TBD- - Buffalo Ridge Y15-750 - - ❑ - - ❑ Footnotes: I Attach this addendum to associated APEN form when needed to report additional wells. 2 If this is a newly report source that has not been assigned an AIRS ID by the APCD, enter N/A Form APCD-212 APEN-Addendum Form Tanks Oct 2015 Hello