HomeMy WebLinkAbout20150518.tiff COPHE COLORADO
CO II% Department of Public
Health fr Environment
Dedicated to protecting and improving the health and environment of the people of Colorado
Weld County - Clerk to the Board
1150 O PO Box 758 RECEIVED
Greeley, CO 80632
FEB 17 2015
February 11, 2015
WELD COUNTY
COMMISSIONERS
Dear Sir or Madam:
On February 18, 2015, the Air Pollution Control Division will begin a 30-day public notice period for
Noble Energy, Inc - Wells Ranch 35 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 Ft Environment
APCD-SS-B1
4300 Cherry Creek Drive South
Denver, Colorado 80246-1530
Attention: Clara Gonzales
Regards,
Clara Gonzales
Public Notice Coordinator
Stationary Sources Program
Air Pollution Control Division
Enclosure
CC: f L,PLt),rIi_
2-23"I6 4300 Cherry Creek Drive S.,Denver, CO 80246-1530 P 303-692-2000 www.colorado.gov/cdphe ?p,7(
John W. Hickenlooper, Governor I Larry Wolk,MD,MSPH, Executive Director and Chief Medical Officer
2015-0518
CDPHE Air Pollution Control Division
CO Notice of a Proposed Project or Activity Warranting Public
' Comment
Website Title: Noble Energy, Inc - Wells Ranch 35 EcoNode - Weld County
Notice Period Begins: February 18, 2015
Notice is hereby given that an application for a proposed project or activity has been submitted to the
Colorado Air Pollution Control Division for the following source of air pollution:
Applicant: Noble Energy, Inc
Facility: Wells Ranch 35 EcoNode
Oil and gas exploration and production facility
CWL Section 36, T6N, R63W
Weld County
The proposed project or activity is as follows: Oil and gas exploration facility including a natural gas venting
flare.
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
IIl.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 14WE1477 have been
filed with the Weld County Clerk's office. A copy of the draft permit and the Division's analysis are
available on the Division's website at https://www.colorado.gov/pacific/cdphe/air-permit-public-notices
The Division hereby solicits submission of public comment from any interested person concerning the ability
of the proposed project or activity to comply with the applicable standards and regulations of the
Commission. The Division will receive and consider written public comments for thirty calendar days after
the date of this Notice. Any such comment must be submitted in writing to the following addressee:
Stephanie Chaousy
Colorado Department of Public Health and Environment
4300 Cherry Creek Drive South, APCD-SS-B1
Denver, Colorado 80246-1530
cdphe.commentsapcd@state.co.us
®WV COLORADO
STATE OF COLORADO
COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT t'e ,`p\�\
AIR POLLUTION CONTROL DIVISION
TELEPHONE: (303)692-3150 . ,�
CONSTRUCTION PERMIT
PERMIT NO: 14W E1477
Issuance 1
DATE ISSUED:
ISSUED TO: Noble Energy, Inc.
THE SOURCE TO WHICH THIS PERMIT APPLIES IS DESCRIBED AND LOCATED AS FOLLOWS:
Oil and gas facility, known as the Wells Ranch 35 EcoNode, located in the CWL of Section
36, Township 6 North, Range 63 West, in Weld County, Colorado.
THE SPECIFIC EQUIPMENT OR ACTIVITY SUBJECT TO THIS PERMIT INCLUDES THE FOLLOWING:
Facility AIRS
Equipment Point Description
ID
Flare 005 Separator controlled by a 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
https://www.colorado.00v/pacific/cdphe/other-air-permitting-notices. Failure to notify the
Division of startup of the permitted source is a violation of Air Quality Control Commission
(AQCC) Regulation No. 3, Part B, Section III.G.1 and can result in the revocation of the
permit.
2. Within one hundred and eighty days (180) after issuance of this permit, compliance with the
conditions contained in this permit shall be demonstrated to the Division. It is the owner or
operator's responsibility to self-certify compliance with the conditions. Failure to demonstrate
compliance within 180 days may result in revocation of the permit. (Reference: Regulation
No. 3, Part B, III.G.2).
3. This permit shall expire if the owner or operator of the source for which this permit was
issued: (i)does not commence construction/modification or operation of this source within 18
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
AIRS ID: 123/9D2D Page 1 of 8
Wellhead Version 2012-1
olo Depa e f bli Health and Environment
it Pollution Control Division
application as it i) ' s co tion fora period of eighteen
months or more; (iii) does not complete construction within a reasonable time of the
estimated completion date. The Division may grant extensions of the deadline per
Regulation No. 3, Part B, III.F.4.b. (Reference: Regulation No. 3, Part B, III.F.4.)
4. The operator shall complete all initial compliance testing and sampling as required in this
permit and submit the results to the Division as part of the self-certification process.
(Reference: Regulation No. 3, Part B, Section III.E.)
5. The operator shall retain the permit final authorization letter issued by the Division, after
completion of self-certification,with the most current construction permit. This construction
permit alone does not provide final authority for the operation of this source.
EMISSION LIMITATIONS AND RECORDS
6. Emissions of air pollutants shall not exceed the following limitations (as calculated in the
Division's preliminary analysis). (Reference: Regulation No. 3, Part B, Section II.A.4)
Annual Limits:
Facility AIRS Tons per Year Emission Type
Equipment ID Point NO, VOC CO yp
Flare 005 7.9 63.0 43.1 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 Pollutants
Equipment Point Control Device Controlled
ID
Flare 005 Separator controlled by a 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)
Process/Consumption Limits
AIRS ID: 123/9D2D Page 2 of 8
II color. , Depa e Sf • bli Health and Environment
it Pollution Control Division
Facility t S
-rocess arame er Annual Limit
Equipment ID Point
Flare 005 Natural qas flaring 183 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 opacity standards using EPA
Method 9 to measure opacity from the flare. (Reference: Regulation No. 1, Section II.A.5).
15. Within one hundred and eighty days(180)after issuance of this permit,the owner or operator
shall complete the initial extended gas analysis of gas samples that are representative of
volatile organic compound (VOC) and hazardous air pollutants (HAP)that may be released
as fugitive emissions. This extended gas analysis shall be used in the compliance
demonstration as required in the Emission Limits and Records section of this permit. The
operator shall submit the results of the gas analysis and emission calculations to the Division
as part of the self-certification process to ensure compliance with emissions limits.
Periodic Testing Requirements
16. 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
AIRS ID: 123/9D2D Page 3 of 8
olo Depa e f li Health and Environment
it Pollution Control Division
(weight fracti e • u pe ' lication. Results of testing
shall be used to determine site-specific emission factors using Division approved methods.
ADDITIONAL REQUIREMENTS
17. 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 volatile organic compounds (VOC) and nitrogen oxides sources (NO,) 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 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.
18. Federal regulatory program requirements(i.e. PSD, NANSR)shall apply to this source at any
such time that this source becomes major solely by virtue of a relaxation in any permit
condition. Any relaxation that increases the potential to emit above the applicable Federal
program threshold will require a full review of the source as though construction had not yet
commenced on the source. The source shall not exceed the Federal program threshold until
a permit is granted. (Regulation No. 3 Part D).
GENERAL TERMS AND CONDITIONS
19. 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.
20. 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: 123/9D2D Page 4 of 8
Color i Depa e .f a bli Health and Environment
A it Pollution Control Division
to operate ar ...`; r d ',, e °: -= e Self- for Final Authorization
section of this permit.
21. This permit is issued in reliance upon the accuracy and completeness of information supplied
by the applicant and is conditioned upon conduct of the activity, or construction, installation
and operation of the source, in accordance with this information and with representations
made by the applicant or applicant's agents. It is valid only for the equipment and operations
or activity specifically identified on the permit.
22. 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.
23. 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.
24. 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.
25. Violation of the terms of a permit or of the provisions of the Colorado Air Pollution Prevention
and Control Act or the regulations of the AQCC may result in administrative, civil or criminal
enforcement actions under Sections 25-7-115 (enforcement), -121 (injunctions), -122 (civil
penalties), -122.1 (criminal penalties), C.R.S.
By:
Stephanie Chaousy, PE
Permit Engineer
Permit History
Issuance Date Description
Issuance 1 This Issuance Issued to Noble Energy, Inc. Newly permitted
wellhead flare at a synthetic minor facility.
AIRS ID: 123/9D2D Page 5 of 8
D olo Depa e f Ii Health and Environment
it 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 maybe 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:
htips://www.colorado.qov/pacific/cdphe/aacc-reqs
4) The following emissions of non-criteria reportable air pollutants are estimated based upon the process
limits as indicated in this permit. This information is listed to inform the operator of the Division's analysis of
the specific compounds emitted if the source(s)operate at the permitted limitations.
Uncontrolled
Emission Are the Controlled
AIRS Rate emissions Emission
Point Pollutant CAS# BIN (Ibyr) reportable? Rate(lb/yr)
Benzene 71432 A 10768 Yes 538
Toluene 108883 C 10768 Yes 538
Ethylbenzene 100414 C 5293 Yes 265
001 Xylenes 1130207 C 5293 Yes 265
n-Hexane 110543 C 32303 Yes 1615
2,2,4 540841 C 5293 Yes 265
Trimethylpentane
5) The emission levels contained in this permit are based on the following emission factors:
Point 001:
Weight Emission Emission
CAS# Pollutant Fraction Factors Factors Source
of Gas(%) Uncontrolled Controlled
NOx 0.068 0.068 AP-42
lb/MMBtu lb/MMBtu
CO --- 0.37 lb/MMBtu 0.37 AP-42
lb/MMBtu
0.6881 Engineering
VOC 23.48 13.8 lb/mscf
Ib/mscf Calculation
71432 Benzene 0.10 0.0591b/mscf 0.0030 Engineering
Ib/mscf Calculation
108883 Toluene 0.10 0.0591b/mscf 0.0030 Engineering
Ib/mscf Calculation
AIRS ID: 123/9D2D Page 6 of 8
olor « Depa e 4 bli"Health and Environment
A •it Pollution Control Division
` •' sion
CAS# Pollutant Fraction Factors Factors Source
of Gas(%) Uncontrolled Controlled
100414 Ethylbenzene 0.05 0.029 lb/mscf 0.0015 Engineering
Ib/mscf Calculation
1330207 Xylenes 0.05 0.029 lb/mscf 0.0015 Engineering
Ib/mscf Calculation
110543 n-hexane 0.30 0.029 lb/mscf 0.0015 Engineering
Ib/mscf Calculation
540841 2,2,4- 0.05 0.177 lb/mscf 0.0089 Engineering
Trim ethyl pentane lb/mscf Calculation
Note: The uncontrolled VOC and HAP emissions for this point were calculated using the gas sample
collected from the WR 35 Check Meter 1 well.The controlled VOC and HAP emissions factors
for point 005 are based on the flare control efficiency of 95%.
6) In accordance with C.R.S. 25-7-114.1, each Air Pollutant Emission Notice (APEN) associated with 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,n-hexane, total HAPS
NANSR Synthetic Minor Source of:
VOC
MACT HH Area Source Requirements: Not Applicable
8) Full text of the Title 40, Protection of Environment Electronic Code of Federal Regulations can be found at
the website listed below:
http://ecfr.gpoaccess.gov/
Part 60: Standards of Performance for New Stationary Sources
NSPS 60.1-End SubpartA—SubpartKKKK
NSPS Part 60,Appendixes Appendix A—Appendix I
Part 63: National Emission Standards for Hazardous Air Pollutants for Source Categories
MACT 63.1-63.599 Subpart A—Subpart Z
MACT 63.600-63.1199 Subpart AA—Subpart DDD
MACT 63.1200-63.1439 Subpart EEE—Subpart PPP
MACT 63.1440-63.6175 Subpart QQQ—Subpart YYYY
MACT 63.6580-63.8830 Subpart ZZZZ—Subpart MMMMM
MACT 63.8980-End Subpart NNNNN—Subpart XXXXXX
AIRS ID: 123/9D2D Page 7 of 8
olo Depa e f Ii Health and Environment
it Pollution Control Division
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.qov/Dacific/cdphe/air-perm it-self-certification
AIRS ID: 123/9D2D Page 8 of 8
Produced Natural Gas Venting/Flaring Preliminary Analysis Colorado Department of Public Health and Environment
Air Pollution Control Division
Division Information
Engineer: Stephanie Chaousy, PE Attainment Status
Control Engineer: Chris Laplento' PM10 Attainment
Review Date: 01/12/2015 PM2.5 Attainment
Application Date: 09/18/2014 SOx Attainment
Nonattain
NOx ment
Nonattain
VOC ment
Facility Information CO Attainment
Permit No. 14WE1477
County# 123 Weld Potentially Located within EAC-determine attainment status of NOx
AIRs Facility# 9D2D
Point# 005
Facility Equipment ID Flare
Company Name: Noble Energy,Inc.
Source Name: Wells Ranch 35 EcoNode
Source Location: CWL Section 36,T6N, R63W
SIC: 1311
Elevation(feet)4600
New Permit Modification APEN
X (CPI) (Issuance#) Required/Permit
Exempt
Transfer of APEN
Ownership Exempt/Permit
Exempt
Notes
Equipment Description
This source vents natural qas from: a well head separator
Emissions from this source are: routed to an enclosed flare
Natural gas venting from a well head separator.Emissions from this source are routed to an enclosed
flare.
Emission Calculation Method
EPA Emission Inventory Improvement Program Publication:Volume II,Chapter 10-Displacement Equation(10.4-3)
Ex=Q'MW*Xx/C
Ex=emissions of pollutant x
0=Volumetric flow rate/volume of gas processed
MW=Molecular weight of gas=SG of gas'MW of air
Xx=mass fraction of x in gas
C=molar volume of ideal gas(379 scf/Ib-mop at 60F and 1 atm
Throughput(Q) 183 MMscf/yr 20890.4 ser/hr 15.54 MMscf/mo I
MW 22.300 Ib/Ib-mot I 0.004 MMscf/d
mole% MW lbx/Ibmol mass fraction E lb/hr lb/yr WYHelium 0 4.0026 0.000 0.000 Helium 0.0 0 0.00
CO2 2.43 44.01 1.069 0.048 CO2 58.9 516380 258.19
N2 0.466 28.013 0.131 0.006 N2 7.2 63031 31.52
methane 73.464 16.041 11.784 0.528 methane 649.6 5690074 2845.04
ethane 13.568 30.063 4.079 0.183 ethane 224.8 1969518 984.76
propane 6.663 44.092 2.9378 0.132 propane 161.9 1418540 709.27
isobutane 0.662 58.118 0.3847 0.017 isobutane 21.2 185772 92.89
n-butane 1.758 58.118 1.021/ 0.04b n-butane bb.3 4933.34 24b.b/
isopentane 0.301 72.114 0.2171 0.010 isopentane 12.0 104809 52.40
n-pentane 0.3/ 72.114 0.2668 11012 n-pentane 14./ 1288.35 64.42
cyclopentane 0 70.13 0.0000 0.000 cyclopentane 0.0 0 0.00
n-Hexane 0.0000 86.18 0.0000 0.000 n-Hexane 0.0 0 0.00
cyclohexane 0.0000 84.16 0.0000 0.000 cyclohexane 0.0 0 0.00
Otherhexanes 0.318 86.18 0.2741 0.012 Otherhexanes 15.1 132326 66.16
heptanes 0 100.21 0.0000 0.000 heptanes 0.0 0 0.00
methytcyclohexane 0 98.19 0.0000 0.000 methycyclohexane 0.0 0 0.00
224-TMP 0 114.23 0.0000 0.000 224-TMP 0.0 0 0.00
Benzene 0 78.12 0.0000 0.000 Benzene 0.0 0 0.00
Toluene 0 92.15 0.0000 0.000 Toluene 0.0 0 0.00
Produced Natural Gas Venting/Flaring Preliminary Analysis Colorado Department of Public Health and Environment
Air Pollution Control Division
Ethylbenzene 0 108.17 0.0000 0.000 Ethybenzene C 0.0 0 0.00
Xylenes 0 106.17 0.0000 0.000 Xylenes 0.0 0 - 0.00
C8+Heavies 0.000001 13446544.000 0.1345 0.006 C8+Heavies 7.4 64927 32.46
VOC mass fraction: 0.2348 Total VO Emissions(Uncontrolled) 1264.3
22.300 annual limit assuming 95%control 63.2
Notes monthly limit assuming 95%control(lb/mo.) 10737.6
Mole%,MW,and mass fractions from WR 35 Check Meter 1 gas analysis sampled 81112014.
Emissions are based on 8760 hours of operation per year. Operator calculated 1259.3 TPY uncontrolled and 83.0
I I calculated the average MW of C8+based on the average MW on the analysis for the gas. TPY controlled. I believe this is due to rounding In the
calculations. I will approve operator's calculations of 63.0
Flaring Information TPY VOC
Eauipment Description
Flare to combust produced gas until pipeline is available at this wellhead facility.
Manufacturer Flare Industries
Model 6x30
Serial Number TBD
Gas Heating Value 1275 Btu/scf
Throughput 233325 MMBtu/yr
Combustion emission factor source: AP-42:Chapter 13.5
0.068 lb NOXIMMBtu 0.37 lb CO/MMBtu
7.93 tpy NOX 43.17 tpy CO
Emissions Summary
7.93 tpy NOX
Uncontrolled/PTE 43.17 tpy CO
1264.271 tpy VOC
Controlled 63.214 tpy VOC
VOC= 23.48%
Wt% Uncontrolle Scenano 6ontrolle
(conservative WTNOC ratio d Total Total(TPY) A d Total Total(TPY4
Benzene 0.10% 0.004 10769 5.38 Yes 538 0.27
Toluene 0.10% 0.004 10769 5.38 Yes 538 0.27
Ethylbenzene 0.05% 0.002 5384 2.69 Yes 269 0.13
Xylenes 0.05% 0.002 5384 2.69 Yes 269 0.13
n-hexane 0.30% 0.013 32307 16.15 Yes 1615 0.81
224-TMP 0.05% 0.002 5384 2.69 Yes 269 0.13
Regulatory Applicability
AOCC Regulation 1
This source is subject to the opacity requirements for flares in Section II.A.5:'No owner or operator of a
smokeless flare or other flare for the combustion of waste gases shall allow or cause emissions into the
atmosphere of any air pollutant which is in excess of 30%opacity.'
AQCC Regulation 2
Section I.A applies to all emission sources."No person,wherever located,shall cause or allow the
emission of odorous air contaminants from any single source such as to result in detectable odors which
are measured in excess of the following limits: For areas used predominantly for residential or
commercial purposes it is a violation if odors are detected after the odorous air has been diluted with
seven(7)or more volumes of odor free air."
AQCC Regulation 3
An APEN is required for this source because uncontrolled VOC emissions exceed
Part k one ton per year in a nonattainment area for ozone.
A permit is required for this source because uncontrolled VOC emissions from this
facility exceed two tons per year in a nonattainment area for ozone.
Part B: This source is subject to Section III.D.2(Minor Source RACT)because it is located in
a nonattainment area.RACT for this source has been determined to be the use of a
flare to control emissions.
Is public comment Public Comment Required
required?
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