Annual Reporting

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Overview

Introduction
(aa)(1) Onshore Production
(aa)(2-11) Facility Overview
(b) NG Pneumatic Devices
(c) NG Driven Pneumatic Pumps
(d) Acid Gas Removal Units
(e) Dehydrators
(f) Liquids Unloading
(g) Wells with Fracturing
(h) Wells without Fracturing
(i) Blowdown Vent Stacks
(j) Atmospheric Storage Tanks
(k) Transmission Storage Tanks
(l) Well Testing
(m) Associated NG
(n) Flare Stacks
(o) Centrifugal Compressors
(p) Reciprocating Compressors
(q,r) Equipment Leaks
(s) Offshore Emissions
(w) EOR Injection Pumps
(x) EOR Hydrocarbon Liquids
(z) Combustion Equipment

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Sheet 1: Introduction

OMB Number: 2060-0629. Expiration Date: 03/31/2024

Subpart W: Petroleum and Natural Gas Systems

OMB Number: 2060-0751 Expiration Date: day/month/year

Version

R.10

Updated:

11/22/2024

1.) Select the applicable industry segment for this workbook using the dropdown list:

Note: One workbook must be submitted for each industry segment. If your facility is required to report emissions under more than one industry segment, a workbook should be filled out for each industry segment under which that facility falls.

Industry Segment:

List of Subpart W Industry Segments:

Offshore petroleum and natural gas production [98.230(a)(1)]

Onshore petroleum and natural gas production [98.230(a)(2)]

Onshore natural gas processing [98.230(a)(3)]

Onshore natural gas transmission compression [98.230(a)(4)]

Underground natural gas storage [98.230(a)(5)]

Liquefied natural gas (LNG) storage [98.230(a)(6)]

LNG import and export equipment [98.230(a)(7)]

Natural gas distribution [98.230(a)(8)]

Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

Onshore natural gas transmission pipeline [98.230(a)(10)]

2.) Fill out the following table with general information about this facility:

Facility Name:

GHGRP ID:

Reporting Period:

Comments:

3.) Fill out the applicable source reporting forms for your industry segment, as indicated with a green "Yes", below:

Required for 0:

Go to Reporting Spreadsheet

Total Reported CO2 Emissions (mt CO2)

Total Reported CH4 Emissions (mt CH4)

Total Reported N2O Emissions (mt N2O)

Onshore Production [98.236(aa)(1)]

#N/A

Go to Onshore Production Tab

N/A

N/A

N/A

Facility Overview [98.236(aa)(2-11)]

#N/A

Go to Facility Overview Tab

N/A

N/A

N/A

Natural Gas Pneumatic Devices [98.236(b)]

#N/A

Go to NG Pneumatic Devices Tab

#N/A

#N/A

N/A

Natural Gas Driven Pneumatic Pumps [98.236(c)]

#N/A

Go to NG Driven Pneumatic Pumps Tab

#N/A

#N/A

N/A

Acid Gas Removal Units [98.236(d)]

#N/A

Go to Acid Gas Removal Units Tab

#N/A

N/A

N/A

Dehydrators [98.236(e)]

#N/A

Go to Dehydrators Tab

#N/A

#N/A

#N/A

Well Venting for Liquids Unloading [98.236(f)]

#N/A

Go to Liquids Unloading Tab

#N/A

#N/A

N/A

Completions and Workovers with Hydraulic Fracturing [98.236(g)]

#N/A

Go to Wells with Fracturing Tab

#N/A

#N/A

#N/A

Completions and Workovers without Hydraulic Fracturing [98.236(h)]

#N/A

Go to Wells without Fracturing Tab

#N/A

#N/A

#N/A

Blowdown Vent Stacks [98.236(i)]

#N/A

Go to Blowdown Vent Stacks Tab

#N/A

#N/A

N/A

Atmospheric Storage Tanks [98.236(j)]

#N/A

Go to Atmospheric Storage Tanks Tab

#N/A

#N/A

#N/A

Transmission Storage Tanks [98.236(k)]

#N/A

Go to Transmission Storage Tanks Tab

#N/A

#N/A

#N/A

Well Testing [98.236(l)]

#N/A

Go to Well Testing Tab

#N/A

#N/A

#N/A

Associated Gas Venting and Flaring [98.236(m)]

#N/A

Go to Associated NG Tab

#N/A

#N/A

#N/A

Flare Stacks [98.236(n)]

#N/A

Go to Flare Stacks Tab

#N/A

#N/A

#N/A

Centrifugal Compressors [98.236(o)]

#N/A

Go to Centrifugal Compressors Tab

#N/A

#N/A

#N/A

Reciprocating Compressors [98.236(p)]

#N/A

Go to Reciprocating Compressors Tab

#N/A

#N/A

#N/A

Equipment Leaks Surveys and Population Counts [98.236(q,r)]

#N/A

Go to Equipment Leaks Tab

#N/A

#N/A

N/A

Offshore Petroleum and Natural Gas Production [98.236(s)]

#N/A

Go to Offshore Emissions Tab

#N/A

#N/A

#N/A

Enhanced Oil Recovery Injection Pumps [98.236(w)]

#N/A

Go to EOR Injection Pumps Tab

#N/A

N/A

N/A

Enhanced Oil Recovery Hydrocarbon Liquids [98.236(x)]

#N/A

Go to EOR Hydrocarbon Liquids Tab

#N/A

N/A

N/A

Combustion Equipment at Onshore Petroleum and Natural Gas Production Facilities, Onshore Petroleum and Natural Gas Gathering and Boosting Facilities, and Natural gas Distribution Facilities [98.236(z)]

#N/A

Go to Combustion Equipment Tab

#N/A

#N/A

#N/A

Total CO2e Emissions (mt CO2e)

Totals

#N/A

#N/A

#N/A

#N/A

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Sheet 2: (aa)(1) Onshore Production

Onshore Petroleum and Natural Gas Production Facility Level Requirements Under 98.236(aa)(1)

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

Each onshore petroleum and natural gas production facility must report the information specified in 98.236(aa)(1). In addition, certain well-specific requirements of 98.236(f), (g), (h), (l), and (m) should be reported below. If a quantity required to be reported is zero, you must report zero as the value.

Basin means geologic provinces as defined by the American Association of Petroleum Geologists (AAPG) Geologic Note: AAPG–CSD Geologic Provinces Code Map: AAPG Bulletin, Prepared by Richard F. Meyer, Laure G. Wallace, and Fred J. Wagner, Jr., Volume 75, Number 10 (October 1991) (incorporated by reference, see 98.7) and the Alaska Geological Province Boundary Map, Compiled by the American Association of Petroleum Geologists Committee on Statistics of Drilling in Cooperation with the USGS, 1978 (incorporated by reference, see 98.7). Sub-basin category, for onshore natural gas production, means a subdivision of a basin into the unique combination of wells with the surface coordinates within the boundaries of an individual county and subsurface completion in one or more of each of the following five formation types: Oil, high permeability gas, shale gas, coal seam, or other tight gas reservoir rock. The distinction between high permeability gas and tight gas reservoirs shall be designated as follows: High permeability gas reservoirs with >0.1 millidarcy permeability, and tight gas reservoirs with ≤0.1 millidarcy permeability. Permeability for a reservoir type shall be determined by engineering estimate. Wells that produce from high permeability gas, shale gas, coal seam, or other tight gas reservoir rock are considered gas wells; gas wells producing from more than one of these formation types shall be classified into only one type based on the formation with the most contribution to production as determined by engineering knowledge. All wells that produce hydrocarbon liquids (with or without gas) and do not meet the definition of a gas well in this sub-basin category definition are considered to be in the oil formation. All emission sources that handle condensate from gas wells in high permeability gas, shale gas, or tight gas reservoir rock formations are considered to be in the formation that the gas well belongs to and not in the oil formation. NOTE: Basins 221 (Gulf Coast Basin - LA) and 222 (Gulf Coast Basin - TX) are listed collectively under Basin 220. NOTE: The sub-basin formation type options below include "Other tight reservoir rock" -- this corresponds to the "other tight gas reservoir rock" type described in the 98.238 definitions. NOTE: Kern County, California, makes use of two county codes (029 and 030). For GHGRP reporting purposes, both 029 and 030 are accepted.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Onshore petroleum and natural gas production: Basin Characterization [Table AA.1.i]:

CLICK HERE

Onshore petroleum and natural gas production: Sub-Basin Characterization [Table AA.1.ii]:

CLICK HERE

Onshore petroleum and natural gas production: Well Characterization [Table AA.1.iii]:

CLICK HERE

For Missing data procedures [Table AA.1.iv]:

CLICK HERE

Table AA.1.i Onshore petroleum and natural gas production: Basin Characterization

Best Available Monitoring Methods (BAMM) and Missing Data

Select the basin associated with this facility [98.236(aa)(1)(i)]

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Onshore Production

Quantity of gas produced in the calendar year from wells (thousand standard cubic feet) [98.236(aa)(1)(i)(A)]

Quantity of gas produced in the calendar year for sales (thousand standard cubic feet) [98.236(aa)(1)(i)(B)]

Quantity of crude oil and condensate produced in the calendar year for sales (barrels) [98.236(aa)(1)(i)(C)]

Table AA.1.ii Onshore petroleum and natural gas production: Sub-Basin Characterization

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Complete these columns ONLY for sub-basins with oil formations

Select the County and State in which the Sub-Basin is located [98.236(aa)(1)(ii)(A-B)]

Select the Formation Type of the Sub-Basin [98.236(aa)(1)(ii)(C)]

Sub-Basin ID

Number of producing wells at the end of the calendar year [98.236(aa)(1)(ii)(D)]

Number of producing wells acquired during the calendar year [98.236(aa)(1)(ii)(E)]

Number of producing wells divested during the calendar year [98.236(aa)(1)(ii)(F)]

Number of wells completed during the calendar year [98.236(aa)(1)(ii)(G)]

Number of wells permanently taken out of production [98.236(aa)(1)(ii)(H)]

Average mole fraction of CH4 in produced gas [98.236(aa)(1)(ii)(I)]

Average mole fraction of CO2 in produced gas [98.236(aa)(1)(ii)(J)]

Average Gas-to-Oil (GOR) Ratio of all wells (thousand standard cubic feet per barrel) [98.236(aa)(1)(ii)(K)]

Average API gravity of all wells (degrees) [98.236(aa)(1)(ii)(L)]

Average Low Pressure Separator Pressure (psig) [98.236(aa)(1)(ii)(M)]

*Note: If Equation W-10A is used, the operational practices for the measured well should be similar to the wells in the sub-basin for which the well is considered representative. If any of the following W-10A parameters are zero or cannot be determined for the well even using missing data procedures, for purposes of Equation W-10A the well would not be considered a representative well and the well should be listed as a Calculated Well: Tp,i, Tp,s, PRs,p, FRMi, FRMs, FRp,i, FRs,p, GORp, and Vp.

Table AA.1.iii Onshore Petroleum and Natural Gas Production: Well Characterization

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RETURN TO LIQUIDS UNLOADING

RETURN TO COMPLETIONS AND WORKOVERS WITH HYDRAULIC FRACTURING

RETURN TO COMPLETIONS AND WORKOVERS WITHOUT HYDRAULIC FRACTURING

RETURN TO WELL TESTING

RETURN TO ASSOCIATED GAS

This table combines well-specific reporting requirements for 98.236(aa)(1), (f), (g), (h), (l) and (m). Complete those columns relevant to the activities conducted at each well.  If you have multiple sets of activity data to report for a specific emission source type, enter these data in separate rows, flagging the additional rows in Col C. For example, if a well has both completions and workover activity, report the completions data on one row, and report the workover data on a separate, subsequent row. In this example, enter only the well ID, the additional data flag, and the workover data on the subsequent row; leave other cells blank so that no data for a particular well are repeated. If you are copying data into this table from another file, the acceptable enumerations for this table's fields can be found at the help resources site listed at the top of this page. Copy and paste into only the blue cells. (The gray cells are write-protected and will therefore cause the "paste" function to fail if they are included in the copied cells.) Use Paste Special / Values when pasting. Failure to cut and paste as directed may damage your reporting form, forcing you to start again with an empty form. Use of the Paste Special / Values will ensure that formatting and cell protection is not altered.  For optimal visibility while completing this table, set "View/Freeze Pane/Freeze pane" option at Cell D274. Do not skip rows between entries. ***Well ID number means the unique and permanent identification number assigned to a petroleum or natural gas well. If the well has been assigned a US Well Number, the well ID number required in this subpart is the US Well Number. If a US Well Number has not been assigned to the well, the well ID number is the identifier established by the well's permitting authority. US Well Numbers follow a format of XX-YYY-ZZZZZ, where XX represents a state code, YYY represents a county code, and ZZZZZ are digits specific to the well.

Well-specific requirements for facilities with Liquids Unloading subject to 98.236(f)

Well-specific requirements for facilities with Completions or Workovers With Hydraulic Fracturing subject to 98.236(g)

Well-specific requirements for facilities with Completions or Workovers WITHOUT Hydraulic Fracturing subject to 98.236(h)

Well-specific requirements for facilities with emissions from Well Testing subject to 98.236(l)

Well-specific requirements for facilities with Associated Gas emissions subject to 98.236(m)

Well-specific requirements for facilities subject to 98.236(aa)(1) Select all applicable columns for each well

Wells tested and subject to 98.236(f)(1)(xi) and (xii)

When using Equation W-10A

When Using Equation W-10A and Equation W-12C

When Using Equation W-10B

Well ID Number [98.236(aa)(1)], [98.236(f)(1)(ii)], [98.236(f)(1)(xi)(A)], [98.236(f)(1)(xii)(A)], [98.236(f)(2)(i)], [98.236(g)(1)], [98.236(g)(5)(ii)], [98.236(g)(6)(iii)], [98.236(h)(1)(i)], [98.236(h)(2)(i)], [98.236(h)(3)(i)], [98.236(h)(4)(i)], [98.236(l)(1)(ii)], [98.236(l)(2)(ii)], [98.236(l)(3)(ii)], [98.236(l)(4)(ii)], [98.236(m)(1)], [98.236(m)(7)(i)], [98.236(m)(8)(i)]

Additional data indicator

Sub-basin [98.236(aa)(1)], [98.236(f)(1)(i)], [98.236(g)(1)], [98.236(h)(1)(i)], [98.236(h)(2)(i)], [98.236(h)(3)(i)], [98.236(h)(4)(i)], [98.236(m)(1)], [98.236(m)(7)], [98.236(m)(8)]

Producing at end of calendar year? [98.236(aa)(1)(ii)(D)]

Producing well acquired during calendar year? [98.236(aa)(1)(ii)(E)]

Producing well divested during calendar year? [98.236(aa)(1)(ii)(F)]

Completed during calendar year? [98.236(aa)(1)(ii)(G)]

Permanently shut-in and plugged during calendar year? [98.236(aa)(1)(ii)(H)]

For permanently shut-in and plugged wells during the calendar year, the quantity of natural gas produced and sent to sale in the calendar year (thousand standard cubic feet mscf) [98.236(aa)(1)(iii)(C)]

For permanently shut-in and plugged wells during the calendar year, the quantity of quantity of crude oil and condensate produced and sent to sale in the calendar year (barrels) [98.236(aa)(1)(iii)(D)]

Calculation Method [98.236(f)(2)(ii)]

Tubing Diameter Group/Pressure Group [98.236(f)(1)(ii)]

Were Plunger Lifts used? [98.236(f)(1)(iii)]

Casing pressure (psia) [98.236(f)(1)(xi)(B)]

Internal casing diameter (inches) [98.236(f)(1)(xi)(C)]

Tubing pressure (psia) [98.236(f)(1)(xii)(B)]

Internal tubing diameter (inches) [98.236(f)(1)(xii)(C)]

Depth of the Well (feet) [98.236(f)(1)(xi)(D)] [98.236(f)(1)(xii)(D)]

Average flow rate of the measured well venting, FR (standard cubic feet per hour) [98.236(f)(1)(xi)(E)] [98.236(f)(1)(xii)(E)]

Completions or Workovers [98.236(g)]

Well Type [98.236(g)(2)]

Is gas flared? [98.236(g)(2)]

Reduced Emission Completion or Workover? [98.236(g)(2)]

Oil or Gas Well [98.236(g)(2)]

Equation Used (Select) [98.236(g)(4)]

Are the only wells in the sub-basin used to calculate "Measured average flowback rates", "GOR" or "Volume of oil produced" wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(g)(5)(iii)(A)] [98.236(g)(5)(iii)(B)] [98.236(g)(5)(ii)]

Measured average flowback rate for W-10A measured well, FRs,p (standard cubic feet per hour) [98.236(g)(5)(ii)]

Was the flow rate during the initial flowback period determined using a multiphase flowmeter upstream of a separator for any measured well in the sub-basin? [98.236(g)(5)(iv)]

Gas to oil ratio, GORp (standard cubic feet per barrel of oil) [98.236(g)(5)(iii)(A)]

Volume of oil produced during first 30 days of production after completion of newly drilled well, Vp (barrels) [98.236(g)(5)(iii)(B)]

Flow volume vented or sent to a flare for each well in the sub-basin, FVs,p (standard cubic feet) [98.236(g)(6)(i)]

Flow rate at the beginning of the period of time when sufficient quantities of gas are present to enable separation of each well in the sub-basin, FRp,i (standard cubic feet per hour) [98.236(g)(6)(ii)]

If a multiphase flowmeter was used to measure the flow rate during the initial flowback period, the average flow rate measured by the multiphase flow meter from the initiation of flowback to the beginning of the period of time when sufficient quantities of gas present to enable separation, FRp,i (standard cubic feet per hour) [98.236(g)(6)(iii)]

Completions or Workovers [98.236(h)]

Flared? [98.236(h)]

Vented to atmosphere [98.236(h)]

Equation used to calculate annual volumetric natural gas emissions? [98.236(l)]

Were well testing emissions vented? [98.236(l)]

Were well testing emissions flared? [98.236(l)]

If the well had associated natural gas, was it vented? [98.236(m)(1)]

If the well had associated natural gas, was it flared? [98.236(m)(1)]

Table AA.1.iv Missing Data Procedures Used for Well-Specific Parameters

Parameters (specify only one per row)

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Well ID Number

(f) Liquids Unloading: Wells tested and subject to 98.236(f)(1)(xi) and (xii)

(g) Completions and workovers with Hydraulic Fracturing: Wells assessed using Eq. W-10A, W-12C or W-10B

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

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Sheet 3: (aa)(2-11) Facility Overview

Industry Segment Specific Requirements under 98.236			#N/A
Version	R.10	Back to Summary Tab				11/22/2024
Worksheet Instructions:
Each facility must report the information specified in paragraphs (aa)(2) through (aa)(11) for its applicable industry segment. If a quantity required to be reported is zero, you must report zero as the value.
"Basin" means geologic provinces as defined by the American Association of Petroleum Geologists, Geologic Note: AAPG–CSD Geologic Provinces Code Map: AAPG Bulletin, prepared by Richard F. Meyer, Laure G. Wallace, and Fred J. Wagner, Jr., Volume 75, Number 10 and the Alaska Geological Province Boundary Map, compiled by the American Association of Petroleum Geologists Committee on Statistics of Drilling in Cooperation with the USGS, 1978. NOTE: Basins 221 and 222 are listed collectively under Basin 220.
External Links:
Subpart W Resources Page	https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems
Optional Calculation Spreadsheet	https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions
Help Resources	https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems
		Offshore Production [Table AA.2.]:	CLICK HERE
		Offshore Production Information for Each Well Permanently Shut-in and Plugged [Table AA.2.i.]	CLICK HERE
		Natural Gas Processing [Table AA.3.]:	CLICK HERE
		Natural Gas Transmission Compression [Table AA.4.]:	CLICK HERE
		Underground Natural Gas Storage [Table AA.5.]:	CLICK HERE
		LNG import/export equipment [Table AA.6.]:	CLICK HERE
		LNG storage [Table AA.7.]:	CLICK HERE
		Natural Gas Distribution [Table AA.8.]:	CLICK HERE
		Onshore petroleum and natural gas gathering and boosting [Table AA.9.]:	CLICK HERE
		Onshore natural gas transmission pipeline [Table AA.10]:	CLICK HERE
		Onshore natural gas transmission pipeline miles for each state [Table AA.10.i]:	CLICK HERE
Table AA.2. Offshore Production as per [98.236(aa)(2)]
Total quantity of gas handled at the offshore platform in the calendar year (thousand standard cubic feet) [98.236(aa)(2)(i)]	Total quantity of oil and condensate handled at the offshore platform in the calendar year (barrels) [98.236(aa)(2)(ii)]
Table AA.2.i. Offshore Production Information for Each Well Permanently Shut-in and Plugged
Row ID	For each well permanently shut-in and plugged during the calendar year, the quantity of natural gas produced that is sent to sale in the calendar year (thousand standard cubic feet) [98.236(aa)(2)(iii)]	For each well permanently shut-in and plugged during the calendar year, the quantity of crude oil and condensate produced that is sent to sale in the calendar year (barrels) [98.236(aa)(2)(iv)]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Table AA.3. Natural Gas Processing as per [98.236(aa)(3)]
				RETURN TO TOP
Quantity of natural gas received at the gas processing plant in the calendar year (thousand standard cubic feet) [98.236(aa)(3)(i)]	Quantity of processed (residue) gas leaving the gas processing plant in the calendar year (thousand standard cubic feet) [98.236(aa)(3)(ii)]	Cumulative quantity of all NGLs (bulk and fractionated) received at the gas processing plant in the calendar year (barrels) [98.236(aa)(3)(iii)]	Cumulative quantity of all NGLs (bulk and fractionated) leaving the gas processing plant in the calendar year (barrels) [98.236(aa)(3)(iv)]	Average mole fraction of CH4 in natural gas received [98.236(aa)(3)(v)]	Average mole fraction of CO2 in natural gas received [98.236(aa)(3)(vi)]	Does the facility fractionate NGLs? [98.236(aa)(3)(vii)]
Table AA.4. Natural Gas Transmission Compression				RETURN TO TOP
Quantity of gas transported through the compressor station in the calendar year (thousand standard cubic feet) [98.236(aa)(4)(i)]	Number of compressors [98.236(aa)(4)(ii)]	Total compressor power rating of all compressors combined (hp) [98.236(aa)(4)(iii)]	Average upstream pipeline pressure (psig) [98.236(aa)(4)(iv)]	Average downstream pipeline pressure (psig) [98.236(aa)(4)(v)]
Table AA.5. Underground Natural Gas Storage		RETURN TO TOP
Quantity of gas injected into storage in the calendar year (thousand standard cubic feet) [98.236(aa)(5)(i)]	Quantity of gas withdrawn from storage in the calendar year (thousand standard cubic feet) [98.236(aa)(5)(ii)]	Total storage capacity (thousand standard cubic feet) [98.236(aa)(5)(iii)]
Table AA.6. LNG import/export equipment	RETURN TO TOP
For LNG import equipment, report quantity imported in the calendar year (thousand standard cubic feet) [98.236(aa)(6)]	For LNG export equipment, report quantity exported in the calendar year (thousand standard cubic feet) [98.236(aa)(7)]
Table AA.7. LNG storage		RETURN TO TOP
Quantity of LNG added into storage in the calendar year (thousand standard cubic feet) [98.236(aa)(8)(i)]	Quantity of LNG withdrawn from storage in the calendar year (thousand standard cubic feet) [98.236(aa)(8)(ii)]	Total storage capacity (thousand standard cubic feet) [98.236(aa)(8)(iii)]
Table AA.8. Natural Gas Distribution as per [98.236(aa)(9)]						RETURN TO TOP
Quantity of natural gas received at all custody transfer stations in the calendar year (thousand standard cubic feet) [98.236(aa)(9)(i)]	Quantity of natural gas withdrawn from in-system storage in the calendar year (thousand standard cubic feet) [98.236(aa)(9)(ii)]	Quantity of natural gas added to in-system storage in the calendar year (thousand standard cubic feet) [98.236(aa)(9)(iii)]	Quantity of natural gas delivered to end users (thousand standard cubic feet) [98.236(aa)(9)(iv)]	Quantity of natural gas transferred to third parties such as other LDCs or pipelines (thousand standard cubic feet) [98.236(aa)(9)(v)]	Quantity of natural gas consumed by the LDC for operational purposes (thousand standard cubic feet) [98.236(aa)(9)(vi)]	Estimated quantity of gas stolen in the calendar year (thousand standard cubic feet) [98.236(aa)(9)(vii)]
Table AA.9. Onshore petroleum and natural gas gathering and boosting as per [98.236(aa)(10)]				RETURN TO TOP
Select the basin associated with this facility [98.236(a)(9)]	Quantity of gas received by the gathering and boosting facility in the calendar year (thousand standard cubic feet) [98.236(aa)(10)(i)]	Quantity of gas transported to a natural gas processing facility, a natural gas transmission pipeline, a natural gas distribution pipeline, or another gathering and boosting facility in the calendar year (thousand standard cubic feet) [98.236(aa)(10)(ii)]	Quantity of all hydrocarbon liquids received by the gathering and boosting facility in the calendar year (barrels) [98.236(aa)(10)(iii)]	Quantity of all hydrocarbon liquids transported to a natural gas processing facility, a natural gas transmission pipeline, a natural gas distribution pipeline, or another gathering and boosting facility in the calendar year (barrels) [98.236(aa)(10)(iv)]
Table AA.10. Onshore natural gas transmission pipeline facilities as per [98.236(aa)(11)]				RETURN TO TOP
Quantity of natural gas received at all custody transfer stations in the calendar year (thousand standard cubic feet) [98.236(aa)(11)(i)]	Quantity of natural gas withdrawn from in-system storage in the calendar year (thousand standard cubic feet) [98.236(aa)(11)(ii)]	Quantity of natural gas added to in-system storage in the calendar year (thousand standard cubic feet) [98.236(aa)(11)(iii)]	Quantity of natural gas transferred to third parties such as LDCs or other transmission pipelines (thousand standard cubic feet) [98.236(aa)(11)(iv)]	Quantity of natural gas consumed by the transmission pipeline facility for operational purposes (thousand standard cubic feet) [98.236(aa)(11)(v)]
Table AA.10.i Onshore natural gas transmission pipeline miles for each state in the facility		RETURN TO TOP
State [98.236(aa)(11)(vi)]	Miles of transmission pipeline [98.236(aa)(11)(vi)]

---

Sheet 4: (b) NG Pneumatic Devices

Natural Gas Pneumatic Device Venting [98.236(b)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segments must report data for natural gas pneumatic device venting:

-Onshore petroleum and natural gas production [98.230(a)(2)]

-Onshore natural gas transmission compression [98.230(a)(4)]

-Underground natural gas storage [98.230(a)(5)]

-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

Table B.1 must be completed by all facilities with pneumatic devices subject to reporting under 98.232. Table B.2 is required for all pneumatic device vented emissions using calculation method 1. Table B.3 is required for all pneumatic device vented emissions using calculation method 2. Table B.4 is required for all pneumatic device vented emissions using calculation method 3. Table B.5 is required for all continuous high bleed and low bleed, or intermittent bleed pneumatic device vented emissions using calculation method 4. Table B.6.i is required for the identification of missing data procedures used for pneumatic devices using calculation method 1. Table B.6.ii is required for the identification of missing data procedures used for pneumatic devices using calculation method 2. Table B.6.iii is required for the identification of missing data procedures used for pneumatic devices using calculation method 3. Table B.6.iv is required for the identification of missing data procedures used for pneumatic devices using calculation method 4.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Emissions for Pneumatic Device Venting [98.236(b)]

mt CO2

mt CH4

mt N2O

0.0

0.00

N/A

Applicability

Did the facility have any natural gas driven pneumatic devices subject to reporting under 98.232 [98.236(b)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for NG driven devices

Pneumatic Devices [Table B.1.i]:

CLICK HERE

Pneumatic Devices Estimated Counts [Table B.1.ii]:

CLICK HERE

Calculation Method 1 Pneumatic Device Vented Emissions [Table B.2]:

CLICK HERE

Calculation Method 2 Pneumatic Device Vented Emissions [Table B.3]:

CLICK HERE

Calculation Method 3 Pneumatic Device Vented Emissions [Table B.4]:

CLICK HERE

Calculation Method 4 Pneumatic Device Vented Emissions [Table B.5]:

CLICK HERE

Missing Data Procedures Used for Pneumatic Device Emission Calculations [Table B.6]:

CLICK HERE

Table B.1.i Pneumatic Devices

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Type of Pneumatic Device

Total Number of Natural Gas Pneumatic Devices [98.236(b)(2)(i)]

Total Number Vented Directly to Atmosphere [98.236(b)(2)(ii)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 1 [98.236(b)(2)(iv)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 2 [98.236(b)(2)(v)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 3 [98.236(b)(2)(vi)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 4 [98.236(b)(2)(vii)]

Continuous High Bleed Pneumatic Devices

Intermittent Bleed Pneumatic Devices

Continuous Low Bleed Pneumatic Devices

Table B.1.ii Pneumatic Devices Estimated Counts

Allowed only for Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting facilities in first or second year of reporting. Complete only if you elect to estimate the count of any type of device.

RETURN TO TOP

Type of Pneumatic Device

Are Any of the Device Counts Provided in Table B.1.i Estimated? (Yes / No) [98.236(b)(2)(viii)]

Specify whether the calendar year is the first calendar year of reporting or the second calendar year of reporting (First / Second) [98.236(b)(2)(viii)(C)]

Total Number, Actual Count [98.236(b)(2)(viii)(A)]

Total Number, Estimated Count [98.236(b)(2)(viii)(B)]

Total Number Vented Directly to Atmosphere, Actual Count [98.236(b)(2)(ii)] [98.236(b)(2)(viii)(A)]

Total Number Vented Directly to Atmosphere, Estimated Count [98.236(b)(2)(ii)] [98.236(b)(2)(viii)(B)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 1 (Actual Count) [98.236(b)(2)(viii)(A)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 1 (Estimated Count) [98.236(b)(2)(viii)(B)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 2 (Actual Count) [98.236(b)(2)(viii)(A)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 2 (Estimated Count) [98.236(b)(2)(viii)(B)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 3 (Actual Count) [98.236(b)(2)(viii)(A)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 3 (Estimated Count) [98.236(b)(2)(viii)(B)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 4 (Actual Count) [98.236(b)(2)(viii)(A)]

Total Number Vented Directly to Atmosphere for Which Emissions Were Calculated Using Calculation Method 4 (Estimated Count) [98.236(b)(2)(viii)(B)]

Continuous High Bleed Pneumatic Devices

Intermittent Bleed Pneumatic Devices

Continuous Low Bleed Pneumatic Devices

Table B.2 Calculation Method 1 Pneumatic Device Vented Emissions

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Measurement Location ID Number [98.236(b)(3)(i)]

Flow Monitor Type [98.236(b)(3)(ii)]

Number of Continuous High Bleed Natural Gas Pneumatic Devices Downstream of the Flow Monitor [98.236(b)(3)(iii)]

Number of Intermittent Bleed Devices Natural Gas Pneumatic Downstream of the Flow Monitor [98.236(b)(3)(iii)]

Number of Continuous Low Bleed Natural Gas Pneumatic Devices Downstream of the Flow Monitor [98.236(b)(3)(iii)]

Is there a Natural Gas Driven Pneumatic Pump Downstream of the Flow Monitor? [98.236(b)(3)(iv)]

Total CO2 Emissions Using Calculation Method 1 (mt CO2) [98.236(b)(3)(v)]

Total CH4 Emissions Using Calculation Method 1 (mt CH4) [98.236(b)(3)(vi)]

Table B.3 Calculation Method 2 Pneumatic Device Vented Emissions

If reporting for the Onshore Petroleum and Natural Gas Production, or Onshore Petroleum and Natural Gas Gathering and Boosting Industry Segments, additional inputs are required in Columns I through K.

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Type of Pneumatic Device

Primary Measurement Method Used [98.236(b)(4)(i)(A)] [98.236(b)(4)(ii)(B)]

Number of Years Used in Current Measurement Cycle [98.236(b)(4)(ii)(A)]

Were Emissions from Any Natural Gas Pneumatic Devices at this Facility Calculated Using Equation W-1B? [98.236(b)(4)(ii)(C)]

Emissions Factor Calculated Using Equation W-1A (scf/hour/device) [98.236(b)(4)(ii)(D)(1)]

Total Number of Natural Gas Pneumatic Devices Measured Across All Years Upon Which the Emission Factor is Based [98.236(b)(4)(ii)(D)(2)]

Total Number of Natural Gas Pneumatic Devices that Vent Directly to the Atmosphere that Were Not Directly Measured (Countt in Equation W-1B) [98.236(b)(4)(ii)(D)(3)]

Estimated Average Number of Hours in the Calendar Year that the Pneumatic Devices Were In Service, Tt (hours) [98.236(b)(4)(i)(B)] [98.236(b)(4)(ii)(D)(4)]

Total Measured CO2 Emissions Using Calculation Method 2 (mt CO2) [98.236(b)(4)(i)(C)] [98.236(b)(4)(ii)(E)]

Total Measured CH4 Emissions Using Calculation Method 2 (mt CH4) [98.236(b)(4)(i)(D)] [98.236(b)(4)(ii)(F)]

Total CO2 Emissions Using Calculation Method 2 from Devices that Were Not Directly Measured (mt CO2) [98.236(b)(4)(ii)(G)]

Total CH4 Emissions Using Calculation Method 2 from Devices that Were Not Directly Measured (mt CH4) [98.236(b)(4)(ii)(H)]

Continuous High Bleed Pneumatic Devices

Intermittent Bleed Pneumatic Devices

Continuous Low Bleed Pneumatic Devices

Table B.4 Calculation Method 3 Pneumatic Device Vented Emissions

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Type of Pneumatic Device

To Calculate Emissions, Did You Measure According to 98.233(a)(3)(i)(A) or Use Default Emission Factors According to 98.233(a)(3)(i)(B)? [98.236(b)(5)(i)(A)]

Primary Measurement Method Used [98.236(b)(5)(i)(B)]

Total Number of Natural Gas Pneumatic Devices that Vent Directly to the Atmosphere and Measured Using Default Factor [98.236(b)(5)(i)(C)(1)]

Average Estimated Number of Hours in the Calendar Year that the Pneumatic Devices Were In Service, Tt (hours) [98.236(b)(5)(i)(C)(2)]

Primary Monitoring Method Used [98.236(b)(5)(ii)(A)]

Number of Complete Monitoring Surveys Conducted [98.236(b)(5)(ii)(A)]

Total Number of Intermittent Bleed Natural Gas Pneumatic Devices Detected as Malfunctioning in Any Pneumatic Device Monitoring Survey During the Calendar Year [98.236(b)(5)(ii)(B)]

Average Time in the Calendar Year that the Pneumatic Devices Were in Service and Assumed Malfunctioning, Average of Tmal,z (hours) [98.236(b)(5)(ii)(C)]

Total Number of Intermittent Bleed Natural Gas Pneumatic Devices NOT Detected as Malfunctioning in Any Pneumatic Device Monitoring Survey During the Calendar Year [98.236(b)(5)(ii)(D)]

Average Time in the Calendar Year that the Pneumatic Devices Were in Service and Not Malfunctioning, Tavg (hours) [98.236(b)(5)(ii)(E)]

Total CO2 Emissions Using Calculation Method 3 (mt CO2) [98.236(b)(5)(iii)]

Total CH4 Emissions Using Calculation Method 3 (mt CH4) [98.236(b)(5)(iv)]

Continuous High Bleed Pneumatic Devices

Intermittent Bleed Pneumatic Devices

Continuous Low Bleed Pneumatic Devices

Table B.5 Calculation Method 4 Pneumatic Device Vented Emissions

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Type of Pneumatic Device

Estimated Average Number of Hours in the Operating Year that the Pneumatic Devices Were in Service, Tt (hours) [98.236(b)(6)(ii)]

Total CO2 Emissions Using Calculation Method 4 (mt CO2) [98.236(b)(6)(iii)]

Total CH4 Emissions Using Calculation Method 4 (mt CH4) [98.236(b)(6)(iv)]

Continuous High Bleed Pneumatic Devices

Intermittent Bleed Pneumatic Devices

Continuous Low Bleed Pneumatic Devices

Table B.6.i Missing Data Procedures Used for Pneumatic Device Emission Calculations Using Method 1

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Measurement Location ID

Parameters for Calculation Method 1 Emissions [Table B.2]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table B.6.ii Missing Data Procedures Used for Pneumatic Device Emission Calculations Using Method 2

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Type of Pneumatic Device

Parameters for Calculation Method 2 Emissions [Table B.3]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table B.6.iii Missing Data Procedures Used for Pneumatic Device Emission Calculations Using Method 3

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Type of Pneumatic Device

Parameters for Calculation Method 3 Emissions [Table B.4]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table B.6.iv Missing Data Procedures Used for Pneumatic Device Emission Calculations Using Method 4

RETURN TO TOP

Type of Pneumatic Device

Parameters for Calculation Method 4 Emissions [Table B.5]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

---

Sheet 5: (c) NG Driven Pneumatic Pumps

Natural Gas Driven Pneumatic Pumps [98.236(c)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segments must report data for natural gas driven pneumatic pumps:

-Onshore petroleum and natural gas production [98.230(a)(2)]

-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

Table C.1 must be completed by all facilities with NG driven pneumatic pumps subject to reporting under 98.232. Table C.2 is required for all NG driven pneumatic pumps that used calculation method 1 to calculate emissions. Table C.3 is required for all NG driven pneumatic pumps that used calculation method 2 to calculate emissions. Table C.4 is required for all NG driven pneumatic pumps that used calculation method 3 to calculate emissions. Table C.5.i is required for the identification of missing data procedures used for NG driven pneumatic pumps that used calculation method 1. Table C.5.ii is required for the identification of missing data procedures used for NG driven pneumatic pumps that used calculation method 2. Table C.5.iii is required for the identification of missing data procedures used for NG driven pneumatic pumps that used calculation method 3.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Emissions for Natural Gas Driven Pneumatic Pumps [98.236(c)]

mt CO2

mt CH4

mt N2O

0.0

0.00

N/A

Applicability

Did the facility have any natural gas driven pneumatic pumps subject to reporting under 98.232 [98.236(c)]?

Did the facility use a continuous flow meter to measure emissions per Calculation Method 1?

Did the facility measure vented emissions and, if applicable, calculate emissions using a facility-specific emission factor per Calculation Method 2?

Did the facility use the default population emission factor to calculate emissions per Calculation Method 3?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for NG driven pumps

NG Driven Pneumatic Pumps Count if using Calculation Methods 1, 2, or 3 [Table C.1]:

CLICK HERE

NG Driven Pneumatic Pumps Calculation Method 1 [Table C.2]:

CLICK HERE

NG Driven Pneumatic Pumps Calculation Method 2 [Table C.3]:

CLICK HERE

NG Driven Pneumatic Pumps Calculation Method 3 [Table C.4]:

CLICK HERE

Missing Data Procedures Using Method 1 [Table C.5i]:

CLICK HERE

Missing Data Procedures Using Method 2 [Table C.5ii]:

CLICK HERE

Missing Data Procedures Using Method 3 [Table C.5iii]:

CLICK HERE

Table C.1 NG Driven Pneumatic Pumps Count if using Calculation Methods 1, 2, or 3

RETURN TO TOP

Total Count of Natural Gas Driven Pneumatic Pumps [98.236(c)(2)(i)]

Total Number of Natural Gas Driven Pumps Vented Directly to the Atmosphere [98.236(c)(2)(ii)]

Table C.2 NG Driven Pneumatic Pumps Calculation Method 1

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Measurement Location ID Number [98.236(c)(3)(i)]

Flow Monitor Type [98.236(c)(3)(ii)]

Number of Natural Gas Driven Pneumatic Pumps Downstream of Flow Monitor [98.236(c)(3)(iii)]

Are Any Natural Gas Driven Pneumatic Devices Downstream of the Flow Monitor? [98.236(c)(3)(iv)]

Annual CO2 Emissions Using Calculation Method 1 (mt CO2) [98.236(c)(3)(v)]

Annual CH4 Emissions Using Calculation Method 1 (mt CH4) [98.236(c)(3)(vi)]

Table C.3 NG Driven Pneumatic Pumps Calculation Method 2

RETURN TO TOP

Number of Years Used in the Current Measurement Cycle [98.236(c)(4)(i)]

Number of Natural Gas Driven Pneumatic Pumps [98.236(c)(4)(ii)]

Were All Emissions from Pneumatic Pumps Measured During the Reporting Year or Were Some Measured and Some Calculated Using Equation W-2B? [98.236(c)(4)(iii)]

Primary Measurement Method [98.236(c)(4)(iv)]

Emission Factor for the Reporting Year from Equation W-2A (scf/hr/pump) [98.236(c)(4)(v)(A)]

Total Number of Pumps Across All Years Upon Which the Emission Factor is Based, County [98.236(c)(4)(v)(B)]

Total Number of Pumps that Vent Directly to the Atmosphere and Were Not Directly Measured According to 98.233(c)(1) or 98.233(c)(2)(iii), Count [98.236(c)(4)(v)(C)]

Average Estimated Number of Hours the Pumps Were Pumping Liquid, T [98.236(c)(4)(v)(D)]

Annual CO2 Emissions Which Were Directly Measured and Calculated as Specified in §98.233(c)(2)(ii) through (vi) (mt CO2) [98.236(c)(4)(vi)]

Annual CH4 Emissions Which Were Directly Measured and Calculated as Specified in §98.233(c)(2)(ii) through (vi) (mt CH4) [98.236(c)(4)(vii)]

Annual CO2 Emissions Using Equation W-2B (Emissions Which Were Not Measured) (mt CO2) [98.236(c)(4)(viii)]

Annual CH4 Emissions Using Equation W-2B (Emission Which Were Not Measured) (mt CH4) [98.236(c)(4)(ix)]

Table C.4 NG Driven Pneumatic Pumps Calculation Method 3

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Number of Pumps that Vent Directly to the Atmosphere, Count [98.236(c)(5)(i)]

Average Estimated Number of Hours the Natural Gas Driven Pumps Vented Directly to the Atmosphere Pumped Liquid [98.236(c)(5)(ii)]

Annual CO2 Emissions Using Calculation Method 3 (mt CO2) [98.236(c)(5)(iii)]

Annual CH4 Emissions Using Calculation Method 3 (mt CH4) [98.236(c)(5)(iv)]

Table C.5.i Missing Data Procedures Used for NG Driven Pneumatic Pumps Emission Calculations Using Method 1

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Measurement Location ID Number for Parameters (For Calculation Method 1 Only)

Parameter for Calculation Method 1 Emissions [Table C.2]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures Used [98.235(h)]

Table C.5.ii Missing Data Procedures Used for NG Driven Pneumatic Pumps Emission Calculations Using Method 2

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Parameter for Calculation Method 2 Emissions [Table C.3]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures Used [98.235(h)]

Table C.5.iii Missing Data Procedures Used for NG Driven Pneumatic Pumps Emission Calculations Using Method 3

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Parameter for Calculation Method 3 Emissions [Table C.4]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures Used [98.235(h)]

---

Sheet 6: (d) Acid Gas Removal Units

Acid Gas Removal Units [98.236(d)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segments must report data for acid gas removal units:

-Onshore petroleum and natural gas production [98.230(a)(2)]

-Onshore natural gas processing [98.230(a)(3)]

-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

Table D.1 must be completed by all facilities with acid gas removal units subject to reporting under 98.232. Table D.2 is required for emissions determined using Calculation Method 1. Table D.3 is required for emissions determined using Calculation Method 2. Table D.4 is required for emissions determined using Calculation Method 3. Table D.5 is required for emissions determined using Calculation Method 4. Table D.6 is required for the identification of missing data procedures used for acid gas removal unit emission calculations.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Emissions for Acid Gas Removal Units [98.236(d)]

mt CO2

mt CH4

mt N2O

0.0

N/A

N/A

Applicability

Did the facility have any acid gas removal units that vent directly to the atmosphere, to a flare or engine, or to a sulfur recovery plant subject to reporting under 98.232 [98.236(d)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Acid Gas Removal Units

For Acid gas removal unit specific information [Table D.1]:

CLICK HERE

For Calculation Method 1 emissions [Table D.2]:

CLICK HERE

For Calculation Method 2 emissions [Table D.3]:

CLICK HERE

For Calculation Method 3 emissions [Table D.4]:

CLICK HERE

For Calculation Method 4 emissions [Table D.5]:

CLICK HERE

For Missing data procedures [Table D.6]:

CLICK HERE

Table D.1 Acid gas removal unit specific information

Acid gas removal unit reporting is on a unit basis, not a vent basis. If your AGR unit has multiple vents, enter the unit ID, not the vent IDs in Table D.1 and aggregate data from multiple vents as needed in Tables D.2 through D.6.

Required only for Onshore Petroleum and Natural Gas Production

Required only for Onshore Petroleum and Natural Gas Gathering and Boosting

Unit ID or Name [98.236(d)(1)(i)]

Sub-Basin ID [98.236(d)(1)(vi)]

County and State [98.236(d)(1)(vi)]

Total feed rate entering the acid gas removal unit for the year (million cubic feet) [98.236(d)(1)(ii)]

Calculation Method Used (Select from list) [98.236(d)(1)(iii)]

Are any CO2 emissions from the acid gas removal unit recovered and transferred outside the facility? (Yes / No) [98.236(d)(1)(iv)]

Total CO2 Emissions (mt CO2) [98.236(d)(1)(v)]

1

2

3

4

5

6

7

8

9

10

Table D.2 Calculation Method 1 emissions

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WARNING: Data must be entered in sequential rows. e-GGRT will not process records after an empty row.

Unit ID or Name [98.236(d)(1)(i)]

Annual average fraction of CO2 content in the vent from the acid gas removal unit (volumetric fraction) [98.236(d)(2)(i)(A)]

Annual volume of gas vented from the acid gas removal unit (standard cubic feet) [98.236(d)(2)(i)(B)]

1

2

3

4

5

6

7

8

9

10

Table D.3 Calculation Method 2 emissions

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WARNING: Data must be entered in sequential rows. e-GGRT will not process records after an empty row.

Unit ID or Name [98.236(d)(1)(i)]

Annual average fraction of CO2 content in the vent from the acid gas removal unit, VolCO2 (volumetric fraction) [98.236(d)(2)(i)(A)]

Annual volume of gas vented from the acid gas removal unit, Vs (actual or standard cubic feet) [98.236(d)(2)(i)(B)]

Annual volume of gas vented reported on an actual or standard basis? [98.236]

Temperature used to calculate volume of gas vented (oF) [98.236]

Pressure used to calculate volume of gas vented (psi) [98.236]

1

2

3

4

5

6

7

8

9

10

Table D.4 Calculation Method 3 emissions

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WARNING: Data must be entered in sequential rows. e-GGRT will not process records after an empty row.

Unit ID or Name [98.236(d)(1)(i)]

Equation Used (W-4A/W-4B) [98.236(d)(2)(ii)(A)]

Annual average fraction of CO2 content of natural gas into the acid gas removal unit, Voli (volumetric fraction) [98.236(d)(2)(ii)(C)]

Annual average fraction of CO2 content of natural gas out of the acid gas removal unit, Volo (volumetric fraction) [98.236(d)(2)(ii)(B)]

Natural gas flow rate into the acid gas removal unit, Vin (actual or standard cubic feet) (Eq. W-4A) [98.236(d)(2)(ii)(D)]

Natural gas flow rate out of the acid gas removal unit, Vout (actual or standard cubic feet) (Eq. W-4B) [98.236(d)(2)(ii)(D)]

Natural gas flow rate reported on an actual or standard basis? [98.236]

Temperature used to calculate natural gas flow rate (oF) [98.236]

Pressure used to calculate natural gas flow rate (psi) [98.236]

1

2

3

4

5

6

7

8

9

10

Table D.5 Calculation Method 4 Emissions

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WARNING: Data must be entered in sequential rows. e-GGRT will not process records after an empty row.

Unit ID or Name [98.236(d)(1)(i)]

Name of simulation software package used [98.236(d)(2)(iii)(A)]

Natural gas feed temperature (oF) [98.236(d)(2)(iii)(B)]

Natural gas feed pressure (psi) [98.236(d)(2)(iii)(C)]

Natural gas feed flow rate (standard cubic feet per minute) [98.236(d)(2)(iii)(D)]

Acid gas content of feed natural gas (mole percent) [98.236(d)(2)(iii)(E)]

Acid gas content of outlet natural gas (mole percent) [98.236(d)(2)(iii)(F)]

Unit operating hours (excluding downtime for maintenance or standby) [98.236(d)(2)(iii)(G)]

Exit temperature of the natural gas (oF) [98.236(d)(2)(iii)(H)]

Solvent pressure (psi) [98.236(d)(2)(iii)(I)]

Solvent temperature (oF) [98.236(d)(2)(iii)(J)]

Solvent circulation rate (gallons per minute) [98.236(d)(2)(iii)(K)]

Solvent weight (pounds per gallon) [98.236(d)(2)(iii)(L)]

Is a vent meter installed? [98.236(d)(2)(iii)(M)]

Total Annual Volume of Vent Gas Flowing Out of the AGR as Determined by Flow Meter, Va,meter (cubic feet per year at actual conditions) [98.236(d)(2)(iii)(M)(1)]

Total Annual Volume of Vent Gas Flowing Out of the AGR as Determined by the Standard Simulation Software Package, Va,sim (cubic feet per year at actual conditions) [98.236(d)(2)(iii)(M)(2)]

Description of the reason for more than 20% difference. If you do not have more than a 20% difference, please leave the description field blank. [98.236(d)(2)(iii)(M)(3)] [98.236(d)(2)(iii)(M)(2)]

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Table D.6 Missing data procedures used for Acid Gas Removal emission calculations

RETURN TO TOP

Parameters (specify only one per row)

Unit ID or Name [98.236(d)(1)(i)]

Calculation Method 1 Emissions [Table D.2]

Calculation Method 2 Emissions [Table D.3]

Calculation Method 3 Emissions* [Table D.4]

Calculation Method 4 Emissions [Table D.5]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

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---

Sheet 7: (e) Dehydrators

	Dehydrators [98.236(e)]			#N/A
	Version	R.10	Back to Summary Tab				11/22/2024
	Worksheet Instructions:
	In accordance with 98.232, only the following industry segments must report data for dehydrators:
	-Onshore petroleum and natural gas production [98.230(a)(2)]
	-Onshore natural gas processing [98.230(a)(3)]
	-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]
	Table E.1 must be completed by all facilities with small glycol dehydrators (<0.4 MMscfd) subject to reporting under 98.232 and electing to use Calculation Method 2. Table E.2 must be completed by all facilities with desiccant dehydrators subject to reporting under 98.232. Table E.3 must be completed by all facilities with large glycol dehydrators (>=0.4 MMscfd) subject to reporting under 98.232 and facilities electing to use Calculation Method 1 for small glycol dehydrators (<0.4 MMscfd). Table E.4 is required for the identification of missing data procedures used for dehydrator emission calculations.
	External Links:
	Subpart W Resources Page	https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems
	Optional Calculation Spreadsheet	https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions
	Help Resources	https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems
		Total Emissions for Dehydrators [98.236(e)]
		mt CO2	mt CH4	mt N2O
		0.0	0.00	0.000
		Applicability
		Did the facility have any glycol dehydrators with annual average daily natural gas throughputs less than 0.4MMscfd subject to reporting under 98.232 [98.236(e)] and that are using Calculation Method 2?
		Did the facility have any desiccant dehydrators subject to reporting under 98.232 [98.236(e)]?
		Did the facility have any glycol dehydrators with annual average daily natural gas throughputs greater than or equal to 0.4MMscfd subject to reporting under 98.232 [98.236(e)], or did the facility have any glycol dehydrators with annual average daily natural gas throughputs less than 0.4MMscfd using Calculation Method 1?
		Best Available Monitoring Methods (BAMM) and Missing Data
		Were BAMM used for any parameters to calculate	Provide a brief description of the BAMM used, parameter measured, and time period.	Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]
		BAMM not available for Dehydrators
			For Small Glycol Dehydrators Using Calculation Method 2 [Table E.1]:	CLICK HERE
			For Desiccant Dehydrators [Table E.2]:	CLICK HERE
			For Glycol Dehydrators Using Calculation Method 1 [Table E.3]:	CLICK HERE
			For Missing Data Procedures [Table E.4]:	CLICK HERE
	Table E.1 Small Glycol Dehydrators Using Calculation Method 2 [98.233(e)(2)]
	If the facility has any glycol dehydrators with a throughput <0.4 MMscfd (i.e., "small" dehydrators) and is using Calculation Method 2, complete following tables:
	Total Number of Small Glycol Dehydrators Using Calculation Method 2 [98.236(e)(2)(i)]
	Type of Device	Vent Controls Used (select all that apply) [98.236(e)(2)(ii)] [98.236(e)(2)(iii)] [98.236(e)(2)(iv)]	Number of Small Glycol Dehydrators Using Calculation Method 2 By Vent Control Type, Count [98.236(e)(2)(ii)] [98.236(e)(2)(iv)(A)]
	Vapor Recovery
	Dehydrator vents to flares or regenerator firebox/fire tubes
	Control devices other than vapor recovery, flare or regenerator firebox/fire tubes
	Control devices other than vapor recovery, flare or regenerator firebox/fire tubes	Specify Type of Other Control Device(s) [98.236(e)(2)(iii)]	Number of Small Glycol Dehydrators Using Calculation Method 2 By Other Vent Control Type [98.236(e)(2)(iii)]
	Type of Emission Point	Total CO2 Emissions (mt CO2) [98.236(e)(2)(iv)(B)] [98.236(e)(2)(v)(A)]	Total CH4 Emissions (mt CH4) [98.236(e)(2)(iv)(C)] [98.236(e)(2)(v)(B)]	Total N2O Emissions (mt N2O) [98.236(e)(2)(iv)(D)]
	Emissions vented to flare or regenerator firebox/fire tubes
	Emissions that were not vented to a flare or regenerator firebox/fire tubes
	Table E.2 Desiccant Dehydrators			RETURN TO TOP
	If the facility has any desiccant dehydrators, complete following tables:
	Total Number of Desiccant Dehydrators [98.236(e)(3)(i)]
	Type of Device	Vent Controls Used (select all that apply) [98.236(e)(3)(i)]	Number of Desiccant Dehydrators By Vent Control Type, Count [98.236(e)(3)(i)]
	Vapor Recovery
	Dehydrator vents to flares or regenerator firebox/fire tubes
	Control devices other than vapor recovery, flare or regenerator firebox/fire tubes
	Control devices other than vapor recovery, flare or regenerator firebox/fire tubes	Specify Type of Other Control Device(s) [98.236(e)(2)(iii)]	Number of Desiccant Dehydrators By Other Vent Control Type [98.236(e)(2)(iii)]
	Type of Emission Point	Total CO2 Emissions (mt CO2) [98.236(e)(3)(i)] [98.236(e)(3)(ii)]	Total CH4 Emissions (mt CH4) [98.236(e)(3)(i)] [98.236(e)(3)(iii)]	Total N2O Emissions (mt N2O) [98.236(e)(3)(i)]
	Emissions vented to flare or regenerator firebox/fire tubes
	Emissions that were not vented to a flare or regenerator firebox/fire tubes
	Table E.3 Glycol Dehydrators Using Calculation Method 1			RETURN TO TOP
		Required only for Onshore Petroleum and Natural Gas Production	Required only for Onshore Petroleum and Natural Gas Gathering and Boosting																Complete only If emissions are vented to a flare or regenerator firebox/fire tubes				Complete only if emissions are vented to the atmosphere without being routed to a flare or regenerator firebox/fire tubes
	Unit ID or Name [98.236(e)(1)(i)]	Sub-Basin ID [98.236(e)(1)(xviii]	County and State [98.236(e)(1)(xviii)]	Glycol dehydrator feed natural gas flow rate determined by engineering estimate based on best available data (MMscfd) [98.236(e)(1)(ii)]	Dehydrator feed natural gas water content (pounds per MMscf) [98.236(e)(1)(iii)]	Dehydrator outlet natural gas water content (pounds per MMscf) [98.236(e)(1)(iv)]	Glycol dehydrator absorbent circulation pump type [98.236(e)(1)(v)]	Dehydrator absorbent circulation rate (gallons per minute) [98.236(e)(1)(vi)]	Report type of absorbent used [98.236(e)(1)(vii)]	Report whether stripper gas is used in glycol dehydrator [98.236(e)(1)(viii)]	Report whether a flash tank separator is used in glycol dehydrator [98.236(e)(1)(ix)]	Total time the glycol dehydrator is operating (hours) [98.236(e)(1)(x)]	Temperature of the wet natural gas (oF) [98.236(e)(1)(xi)]	Pressure of the wet natural gas (psig) [98.236(e)(1)(xii)]	Concentration of CO2 in wet natural gas (mole fraction) [98.236(e)(1)(xiv)]	Concentration of CH4 in wet natural gas (mole fraction) [98.236(e)(1)(xiii)]	Were any dehydrator emissions vented to a vapor recovery device? [98.236(e)(1)(xv)]	Were any dehydrator emissions vented to a flare or regenerator firebox/fire tubes? [98.236(e)(1)(xvi)]	CO2 Emissions from Flares or Regenerators (mt CO2) [98.236(e)(1)(xvi)(A)]	CH4 Emissions from Flares or Regenerators (mt CH4) [98.236(e)(1)(xvi)(B)]	N2O Emissions from Flares or Regenerators (mt N2O) [98.236(e)(1)(xvi)(C)]	Were any dehydrator emissions vented to the atmosphere without being routed to a flare or regenerator firebox/fire tubes? [98.236(e)(1)(xvii)]	CO2 Emissions from Venting (mt CO2) [98.236(e)(1)(xvii)(A)]	CH4 Emissions from Venting (mt CH4) [98.236(e)(1)(xvii)(B)]
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250
	Table E.4 Missing data procedures used for Dehydrator emission calculations			RETURN TO TOP
	Type of Dehydrator	Unit ID (Calculation Method 1 Dehydrators Only)	Parameters	Measurement Frequency	Number of quarters missing data procedures were used [98.236(bb)(1)]	Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]	Procedures used [98.235(h)]

---

Sheet 8: (f) Liquids Unloading

Well Venting for Liquids Unloading [98.236(f)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for well venting for liquids unloading:

-Onshore petroleum and natural gas production [98.230(a)(2)]

For Sub-basins using Calculation Method 1, complete Table F.1. When Calculation Methods 2 or 3 are used, Table F.2 must be completed. Table F.3 is required for the identification of missing data procedures used for well venting emission calculations. Well-specific information related to all wells with liquids unloading must be reported in Table AA.1.iii (see columns J-M of Table AA.1.iii). In addition, data describing wells tested under 98.236(f)(1)(xi) and (xii) must also be entered in Table AA.1.iii (see Columns N-S).

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Emissions for Well Venting for Liquids Unloading [98.236(f)]

mt CO2

mt CH4

mt N2O

0.0

0.00

N/A

Applicability

Did the facility have any well venting for liquids unloading subject to reporting under 98.232 [98.236(f)]?

Was Calculation Method 1 used to calculate emissions [98.233(f)(1)]?

Was Calculation Method 2 used to calculate emissions [98.233(f)(2)]?

Was Calculation Method 3 used to calculate emissions [98.233(f)(3)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Liquids Unloading

For Sub-basins using Calculation Method 1 (Counts, time, emissions) [Table F.1]:

CLICK HERE

For Sub-basins using Calculation Method 2 or 3 (with or without plunger lifts) [Table F.2]:

CLICK HERE

For Missing Data Procedures [Table F.3]:

CLICK HERE

For well-specific reporting requirements [Table AA.1.iii]:

CLICK HERE

Table F.1 Calculation Method 1 (counts, time, emissions)

For Sub-basins using Calculation Method 1, complete Table F.1. (Note: well-specific information for wells with liquids unloading must be reported in Table AA.1.iii)

Sub-Basin ID [98.236(f)(1)(i)]

Tubing Diameter Group/Pressure Group [98.236(f)(1)(ii)]

Were Plunger Lifts used? [98.236(f)(1)(iii)]

Number of Wells vented for liquids unloading, h [98.236(f)(1)(iv)]

Percentage of wells for which the monitoring period used to determine the cumulative amount of time venting was not the full calendar year [98.236(f)(1)(v)]

Cumulative amount of time wells were vented, Sum of Tp Values (hours) [98.236(f)(1)(vi)]

Cumulative Number of Unloadings Vented [98.236(f)(1)(vii)]

Annual natural gas emissions from well venting for liquids unloading (standard cubic feet) [98.236(f)(1)(viii)]

Total CO2 Emissions (mt CO2) [98.236(f)(1)(ix)]

Total CH4 Emissions (mt CH4) [98.236(f)(1)(x)]

Table F.2 Calculation Method 2 & 3 (with or without plunger lifts)

RETURN TO TOP

For Sub-basins using Calculation Method 2 (without plunger lifts) and Calculation Method 3 (with plunger lifts), complete following table: (Note: well-specific information for wells with liquids unloading must be reported in Table AA.1.iii.)

Sub-Basin ID [98.236(f)(2)(i)]

Calculation Method [98.236(f)(2)(ii)]

Were Plunger Lifts used? [98.236(f)(2)(iii)]

Number of wells vented for liquids unloading, W [98.236(f)(2)(iv)]

Cumulative number of unloadings vented to the atmosphere, Vp [98.236(f)(2)(v)]

Annual natural gas emissions from well venting for liquids unloading (standard cubic feet) [98.236(f)(2)(vi)]

Total CO2 Emissions (mt CO2) [98.236(f)(2)(vii)]

Total CH4 Emissions (mt CH4) [98.236(f)(2)(viii)]

Average internal casing diameter, CDp (inches) (Calc. Method 2) [98.236(f)(2)(ix)]

Average internal tubing diameter, TDp (inches) (Calc. Method 3) [98.236(f)(2)(x)]

Table F.3 Missing data procedures used for Liquids Unloading emission calculations

RETURN TO TOP

Parameters (specify only one per row)

Sub-Basin ID [98.236(f)(1)(i)]

Tubing Diameter Group/Pressure Group for Calculation Method 1 [98.236(f)(1)(ii)]

Calculation Method 1 (counts, time, emissions) [Table F.1]

Calculation Method 2 & 3 (With and without plunger lifts) [Table F.2]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

---

Sheet 9: (g) Wells with Fracturing

Completions and Workovers with Hydraulic Fracturing [98.236(g)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for well completions and workovers:

-Onshore petroleum and natural gas production [98.230(a)(2)]

Table G.1 must be completed for well completions with hydraulic fracturing. Table G.2 must be completed for well workovers with hydraulic fracturing. Table G.3 is required for the identification of missing data procedures used for well completion and workover emission calculations. Table G.4 should be completed if data reporting were delayed two years prior to the current reporting year due to reliance solely on wildcat or delineation well properties. Table AA.1.iii must be completed for each well subject to reporting under 98.236(g) (see columns T:AE).

NOTE: Reporting is required for well completions WITH hydraulic fracturing (as applicable) . Use the navigation links below to move between the tables.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Optional delayed reporting requirements for wildcat wells and delineation wells

https://www.ccdsupport.com/confluence/pages/viewpage.action?pageId=267583519

Oil and Gas Well Completions and Workovers with Hydraulic Fracturing Help Page:

https://www.ccdsupport.com/confluence/display/help/Oil+and+Gas+Well+Completions+and+Workovers+with+Hydraulic+Fracturing

Total Emissions for Well Completions and Workovers with Hydraulic Fracturing [98.236(g)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Applicability

Did the facility have any gas or oil well completions or workovers with hydraulic fracturing subject to reporting under 98.232 [98.236(g)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Wells with Fracturing

For well completions with hydraulic fracturing [Table G.1]:

CLICK HERE

For well workovers with hydraulic fracturing [Table G.2]:

CLICK HERE

For Missing data procedures [Table G.3]:

CLICK HERE

Delayed Well Completions and Workovers with Hydraulic Fracturing data (for delays claimed two years prior) [Table G.4]:

CLICK HERE

For well-specific reporting requirements [Table AA.1.iii]:

CLICK HERE

Table G.1 Well Completions with Hydraulic Fracturing

RETURN TO TOP

Complete the following table for well completions with hydraulic fracturing:

Well Type Combination

When using Equation W-10A

Sub-Basin ID [98.236(g)(1)]

Well Type [98.236(g)(2)]

Is gas flared? [98.236(g)(2)]

Reduced Emission Completions? [98.236(g)(2)]

Oil or Gas Well [98.236(g)(2)]

Total count of completions in the calendar year, W [98.236(g)(3)]

Equation Used (Select) [98.236(g)(4)]

Are the only wells in the sub-basin used to calculate "cumulative gas flowback time" wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(g)(5)(i)] [98.236(g)(5)(ii)]

Cumulative gas flowback time from all wells during completions from when gas is first detected until sufficient quantities are present to enable separation, Sum of Tp,i values (hours) [98.236(g)(5)(i)]

Cumulative gas flowback time from all wells during completions after sufficient quantities of gas are present to enable separation, Sum of Tp,s values (hours) [98.236(g)(5)(i)]

Was the flow rate during the initial flowback period determined using a multiphase flowmeter upstream of a separator for any measured well in the sub-basin? [98.236(g)(5)(iv)]

If a multiphase flowmeter was used to measure the flow rate during the initial flowback period, the average flow rate for all wells in the sub-basin measured by the multiphase flow meter from the initiation of flowback to the beginning of the period of time when sufficient quantities of gas present to enable separation, FRp,i (standard cubic feet per hour) [98.236(g)(6)(iii)]

Annual gas emissions, Es,n (standard cubic feet) [98.236(g)(7)]

Annual total CO2 emissions (mt CO2) [98.236(g)(8)]

Annual total CH4 emissions (mt CH4) [98.236(g)(9)]

Annual total N2O emissions (mt N2O) [98.236(g)(10)]

Table G.2 Well Workovers with Hydraulic Fracturing

RETURN TO TOP

Complete the following table for well workovers with hydraulic fracturing:

Well Type Combination

When using Equation W-10A

Sub-Basin ID [98.236(g)(1)]

Well Type [98.236(g)(2)]

Is gas flared? [98.236(g)(2)]

Reduced Emission Workovers? [98.236(g)(2)]

Oil or Gas Well [98.236(g)(2)]

Total count of workovers [98.236(g)(3)]

Equation Used (Select) [98.236(g)(4)]

Are the only wells in the sub-basin used to calculate "cumulative gas flowback time" wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(g)(5)(i)] [98.236(g)(5)(ii)]

Cumulative gas flowback time from all wells during workovers from when gas is first detected until sufficient quantities are present to enable separation, Sum of Tp,i values (hours) [98.236(g)(5)(i)]

Cumulative gas flowback time from all wells during workovers after sufficient quantities of gas are present to enable separation, Sum of Tp,s values (hours) [98.236(g)(5)(i)]

Was the flow rate during the initial flowback period determined using a multiphase flowmeter upstream of a separator for any measured well in the sub-basin? [98.236(g)(5)(iv)]

If a multiphase flowmeter was used to measure the flow rate during the initial flowback period, the average flow rate for all wells in the sub-basin measured by the multiphase flow meter from the initiation of flowback to the beginning of the period of time when sufficient quantities of gas present to enable separation, FRp,i (standard cubic feet per hour) [98.236(g)(6)(iii)]

Annual gas emissions, Es,n (standard cubic feet) [98.236(g)(7)]

Annual Total CO2 emissions (mt CO2) [98.236(g)(8)]

Annual Total CH4 emissions (mt CH4) [98.236(g)(9)]

Annual Total N2O emissions (mt N2O) [98.236(g)(10)]

Table G.3 Missing data procedures used for Well Completion and Workover emission calculations

RETURN TO TOP

Well Type Combination

Parameters (specify only one per row)

Sub-Basin ID [98.236(g)(1)]

Well Type [98.236(g)(2)]

Is gas flared? [98.236(g)(2)]

Reduced Emission Completions or Workovers [98.236(g)(2)]

Oil or Gas? [98.236(g)(2)]

Completion or Workover?

Equation used (Select)

Well Completions with Hydraulic Fracturing [Table G.1]

Well Workovers with Hydraulic Fracturing [Table G.2]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table G.4 Delayed Well Completions and Workovers with Hydraulic Fracturing for data (for delays claimed two years prior)

RETURN TO TOP

Sub-Basin ID

Completion or Workover

Well Type [98.236(g)(2)]

Was Gas Flared? [98.236(g)(2)]

Reduced Emission Completion/Workover? [98.236(g)(2)]

Equation W-10A --Cumulative flowback time from all wells during completions/workovers from when gas is first detected until sufficient quantities are present to enable separation, Sum of Tp,i values (hours) [98.236(g)(5)(i)]

Equation W-10A -- Cumulative flowback time from all wells during completions/workovers after sufficient quantities are present to enable separation, Sum of Tp,s values (hours) [98.236(g)(5)(i)]

Equation W-10A -- Flowback rate for the measured well(s) during completions/workovers (standard cubic feet per hour) [98.236(g)(5)(ii)]

Well ID Number(s) [98.236(g)(5)(i) and (ii)]

---

Sheet 10: (h) Wells without Fracturing

Gas Well Completions and Workovers without Hydraulic Fracturing [98.236(h)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for gas well completions and workovers without hydraulic fracturing:

-Onshore petroleum and natural gas production [98.230(a)(2)]

For gas well completions without hydraulic fracturing and without flaring, Table H.1 must be completed. For gas well completions without hydraulic fracturing and with flaring, Table H.2 must be completed. For gas well workovers without hydraulic fracturing, Table H.3 must be completed. Table AA.1.iii must be completed for each well subject to reporting under 98.236(h) (see columns AF:AH). Table H.4 is required for the identification of missing data procedures used for gas well completion and workover emission calculations. Table H.5 should be completed if data reporting were delayed two years prior to the current reporting year due to reliance solely on wildcat or delineation well properties.

NOTE: Reporting is required for gas well completions WITHOUT hydraulic fracturing (as applicable) . Use the navigation links below to move between the tables.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Optional delayed reporting requirements for wildcat wells and delineation wells

https://www.ccdsupport.com/confluence/pages/viewpage.action?pageId=267583519

Gas Well Completions without Hydraulic Fracturing Help Page:

https://www.ccdsupport.com/confluence/display/help/Gas+Well+Completions+and+Workovers+without+Hydraulic+Fracturing

Total Emissions for Gas Well Completions and Workovers without Hydraulic Fracturing [98.236(h)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Applicability

Did the facility have any gas well completions or workovers without hydraulic fracturing subject to reporting under 98.232 [98.236(h)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Wells without Fracturing

For gas well completions without hydraulic fracturing (without flaring) [Table H.1]:

CLICK HERE

For gas well completions without hydraulic fracturing (with flaring) [Table H.2]:

CLICK HERE

For gas well workovers without hydraulic fracturing [Table H.3]:

CLICK HERE

For Missing data procedures [Table H.4]:

CLICK HERE

Delayed Gas Well Completions and Workovers without Hydraulic Fracturing data (for delays claimed two years prior) [Table H.5]:

CLICK HERE

For well-specific reporting requirements [Table AA.1.iii]:

CLICK HERE

Table H.1 Gas well completions WITHOUT hydraulic fracturing (without flaring)

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Complete the following table for gas well completions that vented directly to the atmosphere without hydraulic fracturing [98.236(h)(1)]:

Average daily gas production rate

Sub-Basin ID [98.236(h)(1)(i)]

Total count of completions that vented directly to atmosphere without flaring [98.236(h)(1)(ii)]

Total number of hours that gas vented directly to atmosphere, Sum of all Tp [98.236(h)(1)(iii)]

Are the only wells in the sub-basin used to calculate "average daily gas production rate" wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(h)(1)(iv)]

Average daily gas production rate, Average of all Vp (standard cubic feet/hour) [98.236(h)(1)(iv)]

Annual total CO2 emissions that resulted from venting gas directly to the atmosphere for completions, Es,p (mt CO2) [98.236(h)(1)(v)]

Annual total CH4 emissions that resulted from venting gas directly to the atmosphere for completions, Es,p (mt CH4) [98.236(h)(1)(vi)]

Table H.2 Gas well completions WITHOUT hydraulic fracturing (with flaring)

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Complete the following table for gas well completions with flaring without hydraulic fracturing [98.236(h)]:

Average daily production rate

Sub-Basin ID [98.236(h)(2)(i)]

Total count of completions that flared gas [98.236(h)(2)(ii)]

Total Number of hours that gas vented to a flare, Sum of all Tp [98.236(h)(2)(iii)]

Are the only wells in the sub-basin used to calculate "average daily gas production rate" wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(h)(2)(iv)]

Average daily gas production rate, Average of all Vp (standard cubic feet/hour) [98.236(h)(2)(iv)]

Annual total CO2 emissions that resulted from flares for completions (mt CO2) [98.236(h)(2)(v)]

Annual total CH4 emissions that resulted from flares for completions (mt CH4) [98.236(h)(2)(vi)]

Annual total N2O emissions that resulted from flares for completions (mt N2O) [98.236(h)(2)(vii)]

Table H.3 Gas well workovers WITHOUT hydraulic fracturing

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Complete the following table for gas well workovers without hydraulic fracturing:

Workovers that vented directly to the atmosphere

Workovers with flaring

Sub-Basin ID [98.236(h)(3)(i)] [98.236(h)(4)(i)]

Did the facility have gas well workovers without flaring within each sub-basin category? [98.236(h)(3)] [98.236(h)(4)]

Total count of workovers that vented directly to atmosphere without flaring [98.236(h)(3)(ii)]

Annual total CO2 emissions that resulted from venting gas directly to the atmosphere for workovers, Es,wo (mt CO2) [98.236(h)(3)(iii)]

Annual total CH4 emissions that resulted from venting gas directly to the atmosphere for workovers, Es,wo (mt CH4) [98.236(h)(3)(iv)]

Total count of workovers with flaring [98.236(h)(4)(ii)]

Annual total CO2 emissions that resulted from flares for workovers (mt CO2) [98.236(h)(4)(iii)]

Annual total CH4 emissions that resulted from flares for workovers (mt CH4) [98.236(h)(4)(iv)]

Annual total N2O emissions that resulted from flares for workovers (mt N2O) [98.236(h)(4)(v)]

Table H.4 Missing data procedures used for Gas Well Completion and Workover emission calculations

RETURN TO TOP

Parameters (specify only one per row)

Sub-Basin ID [98.236(h)]

Completion or Workover?

Flaring

Gas Well Completions without Hydraulic Fracturing (without flaring) [Table H.1]

Gas Well Completions without Hydraulic Fracturing (with flaring) [Table H.2]

Gas Well Workovers without Hydraulic Fracturing [Table H.3]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table H.5 Delayed Gas Well Completions and Workovers without Hydraulic Fracturing data (for delays claimed two years prior)

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Sub-Basin ID

Average daily gas production rate for gas well completions without hydraulic fracturing and without flaring (Avg of all Vp, Eq. W-13B) [98.236(h)(1)(iv)]

Average daily gas production rate for gas well completions without hydraulic fracturing and with flaring (Avg of all Vp, Eq. W-13B) [98.236(h)(2)(iv)]

Well ID Number(s) [98.236(h)(1)(iv) and (2)(iv)]

---

Sheet 11: (i) Blowdown Vent Stacks

Blowdown Vent Stacks [98.236(i)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segments must report data for blowdown vent stacks:

-Onshore natural gas processing [98.230(a)(3)]

-Onshore natural gas transmission compression [98.230(a)(4)]

-LNG import and export equipment [98.230(a)(7)]

-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

-Onshore natural gas transmission pipeline [98.230(a)(10)]

For facilities with blowdown vent stacks subject to reporting, Table I.1 must be completed. For blowdown vent stack emissions calculated by equipment or event type, Table I.2 must be completed. For blowdown vent stack emissions calculated by flow meter, Table I.3 must be completed. For Onshore natural gas transmission pipeline facilities, Table I.4 must be completed. Table I.5 is required for the identification of missing data procedures used for blowdown vent stack emission calculations.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Emissions for Blowdown Vent Stacks [98.236(i)]

mt CO2

mt CH4

mt N2O

0.0

0.00

N/A

Applicability

Did the facility have any blowdown vent stacks subject to reporting under 98.232 [98.236(i)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Blowdown Vent Stack

Blowdown Vent Stacks Emissions Type [Table I.1]:

CLICK HERE

Blowdown Vent Stacks Emissions Calculated by Equipment or Event type [Table I.2]:

CLICK HERE

Blowdown Vent Stacks Emissions Calculated using flow meters [Table I.3]:

CLICK HERE

Onshore natural gas transmission pipeline characterization [Table I.4]:

CLICK HERE

For Missing data procedures [Table I.5]:

CLICK HERE

Table I.1 Blowdown Vent Stacks Emissions Type

How were emissions determined? [98.236(i)]

Table I.2 Blowdown Vent Stacks Emissions Calculated by Equipment or Event type

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Complete the following table for emissions that were calculated by equipment or event type:

For Onshore natural gas transmission pipeline facilities only

Equipment or event type [98.236(i)(1)] [98.236(i)(2)]

Equipment or event type [98.236(i)(1)] [98.236(i)(2)]

Total number of blowdowns for equipment or event type, N [98.236(i)(1)(i)]

Annual total CO2 emissions for each equipment or event type (mt CO2) [98.236(i)(1)(ii)]

Annual total CH4 emissions for each equipment or event type (mt CH4) [98.236(i)(1)(iii)]

Table I.3 Blowdown Vent Stacks Emissions Calculated using flow meters

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Complete the following table for all blowdown stacks for which emissions were calculated using flow meters:

Annual total CO2 emissions calculated by flow meter (mt CO2) [98.236(i)(2)(i)]

Annual total CH4 emissions calculated by flow meter (mt CH4) [98.236(i)(2)(ii)]

Table I.4 Onshore natural gas transmission pipeline characterization

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U.S. State [98.236(i)(3)]

Annual total CO2 emissions (mt CO2) [98.236(i)(3)(i)]

Annual total CH4 emissions (mt CH4) [98.236(i)(3)(ii)]

Annual number of blowdown events [98.236I(i)(3)(iii)]

Table I.5 Missing data procedures used for Blowdown Vent Stacks emission calculations

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Compliance Method

Type

Type (Onshore natural gas transmission pipeline)

Parameters

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

---

Sheet 12: (j) Atmospheric Storage Tanks

Atmospheric Storage Tanks [98.236(j)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segments must report data for gas from hydrocarbon liquids sent to atmospheric tanks:

-Onshore petroleum and natural gas production [98.230(a)(2)]

-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

For gas-liquid separators, onshore petroleum and natural gas gathering and boosting non-separator equipment, or wells with throughput ≥10 barrels/day to atmospheric storage tanks for which emissions are calculated using Calculation Method 1 or 2, Table J.1 must be completed. Table J.1 also must be completed by facilities electing to use Calculation Method 1 or 2 for gas-liquid separators, onshore petroleum and natural gas gathering and boosting non-separator equipment, or wells with throughput <10 barrels/day to atmospheric storage tanks. Note that Onshore petroleum and natural gas production facilities should report collective emissions per sub-basin, and Onshore petroleum and natural gas gathering and boosting facilities should report collective emissions per county and state. Reporters are not restricted to using only one Calculation Method per sub-basin or county and state. Thus, if atmospheric tank emissions for some throughput in a sub-basin (or county and state) are calculated using Calculation Method 1, and emissions for other throughput in the same sub-basin (or county and state) are calculated using Calculation Method 2, then the reporter should enter data for Calculation Method 1 on one row and enter data for Calculation Method 2 on a second row. Similarly, a reporter may elect to use Calculation Method 1 or 2 for some throughput streams <10 barrels/day and use Calculation Method 3 for other throughput streams <10 barrels/day. Facilities electing to use Calculation Method 3 for gas-liquid separators, onshore petroleum and natural gas gathering and boosting non-separator equipment, or wells with throughput <10 barrels/day to atmospheric storage tanks must complete Table J.2.i.Aadditionally, Table J.2.ii must be completed for non-flared emissions, and Table J.2.iii must be completed for flared emissions.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Optional delayed reporting requirements for wildcat wells and delineation wells

http://www.ccdsupport.com/confluence/pages/viewpage.action?pageId=267583519

Total Emissions for Atmospheric Storage Tanks [98.236(j)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Applicability

Did the facility send hydrocarbon liquids to atmospheric storage tanks that are subject to reporting under 98.232 [98.236(j)]?

Calculation Method and Malfunctioning Dump Valves [98.236(j)]

Was Calculation Method 1 used to calculate emissions [(98.233(j)(1)]?

Was Calculation Method 2 used to calculate emissions [(98.233(j)(2)]?

Was Calculation Method 3 used to calculate emissions [(98.233(j)(3)]?

If Calculation Method 1 or 2 were used, were any atmospheric tanks observed to have malfunctioning dump valves during the calendar year?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Atmospheric Storage Tanks

For gas-liquid separators, non-separator equipment, or wells using Calculation Method 1 or 2 [Table J.1]:

CLICK HERE

For gas-liquid separators, non-separator equipment, or wells with oil throughput <10 barrels/day using Calculation Method 3 [Table J.2.i]:

CLICK HERE

For gas-liquid separators, non-separator equipment, or wells with oil throughput <10 barrels/day using Calculation Method 3 (without flaring) [Table J.2.ii]:

CLICK HERE

For gas-liquid separators, non-separator equipment, or wells with oil throughput <10 barrels/day using Calculation Method 3 (with flaring) [Table J.2.iii]:

CLICK HERE

If separator dump valve is functioning improperly during the calendar year [Table J.3]:

CLICK HERE

For Missing data procedures [Table J.4]:

CLICK HERE

Delayed Atmospheric Storage Tanks data (for delays claimed two years prior) [Table J.5]:

CLICK HERE

Table J.1 Gas-Liquid Separators, Non-Separator Equipment, or Wells Using Calculation Method 1 or 2

Required only for Onshore Petroleum and Natural Gas Production

Required only for Onshore Petroleum and Natural Gas Gathering and Boosting

Total volume of oil

Range of CO2 concentration of flash gas

Range of CH4 concentration of flash gas

Required only for Onshore Petroleum and Natural Gas Production

Required only for Onshore Petroleum and Natural Gas Production

Emissions controlled with vapor recovery systems

Emissions vented directly to atmosphere

Emissions vented to flare(s)

Sub-Basin ID [98.236(j)(1)(i)]

County and State [98.236(j)(1)(i)]

Select Calculation Method Used (Select from list) [98.236(j)(1)(ii)]

Name of software package used for Calculation Method 1 [98.236(j)(1)(ii)]

For Onshore petroleum and natural gas production facilities, are the only wells used to calculate "total volume of oil" in the sub-basin wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(j)(1)(iii)]

Total volume of oil sent to tanks from all gas-liquid separators and direct from wells or non-separator equipment (bbl per yr) [98.236(j)(1)(iii)]

Average gas-liquid separator or non-separator equipment temperature (oF) [98.236(j)(1)(iv)]

Average gas-liquid separator or non-separator equipment pressure (psig) [98.236(j)(1)(v)]

Average sales oil or stabilized oil API gravity (degrees) [98.236(j)(1)(vi)]

Minimum concentration of CO2 in flash gas (mole fraction) [98.236(j)(1)(vii)]

Maximum concentration of CO2 in flash gas (mole fraction) [98.236(j)(1)(vii)]

Minimum concentration of CH4 in flash gas (mole fraction) [98.236(j)(1)(viii)]

Maximum concentration of CH4 in flash gas (mole fraction) [98.236(j)(1)(viii)]

Number of wells sending oil to gas-liquid separators or directly to atmospheric tanks [98.236(j)(1)(ix)]

Count of atmospheric tanks [98.236(j)(1)(x)]

Estimated number of atmospheric tanks not on well pads [98.236(j)(1)(xi)]

Were any emissions from atmospheric tanks controlled with vapor recovery systems? [98.236(j)(1)(xii)]

Count of tanks that control emissions with vapor recovery systems [98.236(j)(1)(xii)(A)]

Total CO2 mass that was recovered (mt CO2) [98.236(j)(1)(xii)(B)]

Total CH4 mass that was recovered (mt CH4) [98.236(j)(1)(xii)(C)]

Annual CO2 emissions from tanks with vapor recovery systems (mt CO2) [98.236(j)(1)(xii)(D)]

Annual CH4 emissions from tanks with vapor recovery systems (mt CH4) [98.236(j)(1)(xii)(E)]

Were any emissions from atmospheric tanks vented directly to the atmosphere? [98.236(j)(1)(xiii)(A)]

Count of tanks that vented directly to the atmosphere [98.236(j)(1)(xiii)(A)]

Annual CO2 emissions from venting (mt CO2) [98.236(j)(1)(xiii)(B)]

Annual CH4 emissions from venting (mt CH4) [98.236(j)(1)(xiii)(C)]

Were any emissions from atmospheric tanks vented to flare(s)? [98.236(j)(1)(xiv)]

Count of tanks with flaring emission control measures [98.236(j)(1)(xiv)(A)]

Annual CO2 emissions from flaring (mt CO2) [98.236(j)(1)(xiv)(B)]

Annual CH4 emissions from flaring (mt CH4) [98.236(j)(1)(xiv)(C)]

Annual N2O emissions from flaring (mt N2O) [98.236(j)(1)(xiv)(D)]

Table J.2.i Wells, separators, and non-separator equipment with oil throughput <10 barrels/day using Calculation Method 3

RETURN TO TOP

For wells, separators, and non-separator equipment using Calculation Method 3, complete the following table:

The oil/condensate throughput and counts of tanks and wells reported in this table should only include those assessed using Calculation Method 3 (i.e., when emissions are calculated using Equation W-15)

Required only for Onshore Petroleum and Natural Gas Production

Annual oil throughput

Estimate of fraction of oil/condensate throughput sent to tanks in basin with flaring [98.236(j)(2)(i)(B)]

Estimate of fraction of oil/condensate throughput sent to tanks with vapor recovery system control measures [98.236(j)(2)(i)(C)]

Count of atmospheric tanks in basin [98.236(j)(2)(i)(D)]

Count of wells with gas-liquid separators, Count [98.236(j)(2)(i)(E)]

Count of wells without gas-liquid separators, Count [98.236(j)(2)(i)(F)]

For Onshore petroleum and natural gas production facilities, are the only wells in the sub-basin that were used to calculate the total annual oil/condensate throughput wildcat or delineation wells subject to a 2 year delay in reporting? [98.236(j)(2)(i)(A)]

Total annual oil/condensate throughput that is sent to all atmospheric tanks (barrels per year) [98.236(j)(2)(i)(A)]

Table J.2.ii Data for wells, separators, and non-separator equipment with oil throughput <10 barrels/day, without flaring, using Calculation Method 3

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For wells, separators, and non-separator equipment without flaring using Calculation Method 3, complete the following table for each sub-basin or county and state:

Required only for Onshore Petroleum and Natural Gas Production

Required only for Onshore Petroleum and Natural Gas Gathering and Boosting

Sub-Basin ID [98.236(j)(2)(ii)(A)]

County and State [98.236(j)(2)(ii)(A)]

Count of tanks that did not control emissions with flares [98.236(j)(2)(ii)(B)]

Annual CO2 emissions from tanks without flares (mt CO2) [98.236(j)(2)(ii)(C)]

Annual CH4 emissions from tanks without flares (mt CH4) [98.236(j)(2)(ii)(D)]

Table J.2.iii Data for wells, separators, and non-separator equipment with oil throughput <10 barrels/day, with flaring, using Calculation Method 3

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For wells, separators, and non-separator equipment with flaring using Calculation Method 3, complete the following table for each sub-basin or county and state: When emissions from atmospheric storage tanks are routed to flares, section 98.233(j)(5)(i) requires reporters to use the ‘volume and gas composition in this section.’ For Calculation Method 3, this means the volume of flared gas should be the sum of the volume of CO2 plus the volume of CH4 calculated using Equation W-15. This sum should be used for the term Vs in Equations W-19 and W-20. Additionally, you should assume that CO2 and CH4 are the only compounds in the flared gas.

Required only for Onshore Petroleum and Natural Gas Production

Required only for Onshore Petroleum and Natural Gas Gathering and Boosting

Sub-Basin ID [98.236(j)(2)(iii)(A)]

County and State [98.236(j)(2)(iii)(A)]

Count of tanks with flaring emission control measures [98.236(j)(2)(iii)(B)]

Annual CO2 emissions from flaring (mt CO2) [98.236(j)(2)(iii)(C)]

Annual CH4 emissions from flaring (mt CH4) [98.236(j)(2)(iii)(D)]

Annual N2O emissions from flaring (mt N2O) [98.236(j)(2)(iii)(E)]

Table J.3 Emissions from improperly functioning dump valves

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If Calculation Method 1 or 2 were used, and any gas-liquid separator liquid dump valves did not close properly during the calendar year, complete the following table for each sub-basin or county and state:

Required only for Onshore Petroleum and Natural Gas Production

Required only for Onshore Petroleum and Natural Gas Gathering and Boosting

Sub-Basin ID [98.236(j)(3)]

County and State [98.236(j)(3)]

Count of gas-liquid separators whose liquid dump valves did not close properly [98.236(j)(3)(i)]

Total time the dump valves did not close properly, Tn (hours) [98.236(j)(3)(ii)]

CO2 emissions from improperly functioning dump valves (mt CO2) [98.236(j)(3)(iii)]

CH4 emissions from improperly functioning dump valves (mt CH4) [98.236(j)(3)(iv)]

Table J.4 Missing data procedures used for Atmospheric Storage Tank emission calculations

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Required only for Onshore Petroleum and Natural Gas Production

Required only for Onshore Petroleum and Natural Gas Gathering and Boosting

Parameters (specify only one per row)

Sub-Basin ID

County and State

For gas-liquid separators, non-separator equipment, or wells using Calculation Method 1 or 2 [Table J.1]

If separator dump valve is functioning improperly during the calendar year [Table J.3]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table J.5 Delayed Atmospheric Storage Tanks data (for delays claimed two years prior)

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Sub-Basin ID (required for Calculation Methods 1 and 2)

Total annual volume of oil sent to tanks from all gas-liquid separators and direct from wells (Calculation Methods 1 or 2) (bbl per year) [98.236(j)(1)(iii)]

Total annual oil throughput that is sent to all atmospheric tanks in the basin (Calculation Method 3) (bbl per yr) [98.236(j)(2)(i)(A)]

Well ID Number(s) [98.236(j)(1)(iii) and (2)(i)(A)]

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Sheet 13: (k) Transmission Storage Tanks

Transmission Storage Tanks [98.236(k)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for transmission tanks:

-Onshore natural gas transmission compression [98.230(a)(4)]

Table K.1 must be completed by all facilities with transmission tanks subject to reporting under 98.232. Table K.2 is required for the identification of missing data procedures used for transmission tank emission calculations.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Emissions for Transmission Storage Tanks [98.236(k)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Applicability

Did the facility have any transmission tanks subject to reporting under 98.232 [98.236(k)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Transmission Storage Tanks

Transmission tank emissions [Table K.1]:

CLICK HERE

For Missing data procedures [Table K.2]:

CLICK HERE

Table K.1 Transmission tank emissions

RETURN TO TOP

Fill out the following table for each vent stack:

Dump valve leakage directly to atmosphere

Flared dump valve leakage

Unique Name or ID number for the transmission storage tank vent stack [98.236(k)(1)(i)]

Method used to determine if dump valve leakage occurred [98.236(k)(1)(ii)]

Did dump valve leakage occur? [98.236(k)(1)(iii)]

Was there a flare attached to the transmission storage tank vent? [98.236(k)(1)(iv)]

Did scrubber valve leakage occur while the vent stack was vented directly to the atmosphere? [98.236(k)(2)]

Method used to measure leak rate [98.236(k)(2)(i)]

Measured leak rate (standard cubic feet/hour) [98.236(k)(2)(ii)]

Duration of time leak is counted as having occurred (vented to atmosphere) (hours) [98.236(k)(2)(iii)]

CO2 emissions from venting gas directly to the atmosphere (mt CO2) [98.236(k)(2)(iv)]

CH4 emissions from venting gas directly to the atmosphere (mt CH4) [98.236(k)(2)(v)]

Did scrubber valve leakage occur while the vent stack was vented to a flare? [98.236(k)(3)]

Method used to measure leak rate [98.236(k)(3)(i)]

Measured leak rate (standard cubic feet/hour) [98.236(k)(3)(ii)]

Duration of time that flaring occurred (hours) [98.236(k)(3)(iii)]

CO2 emissions from flaring gas (mt CO2) [98.236(k)(3)(iv)]

CH4 emissions from flaring gas (mt CH4) [98.236(k)(3)(v)]

N2O emissions from flaring gas (mt N2O) [98.236(k)(3)(vi)]

1

2

3

4

5

6

7

8

9

10

11

12

Table K.2 Missing data procedures used for Transmission Tanks emission calculations

RETURN TO TOP

Unique Name or ID number for the vent stack [98.236(k)(1)(i)]

Parameters

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

1

2

3

4

5

6

7

8

9

10

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Sheet 14: (l) Well Testing

Well Testing [98.236(l)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for well testing:

-Onshore petroleum and natural gas production [98.230(a)(2)]

Table AA.1.iii must be completed for each well subject to reporting under 98.236(l) (see columns AI:AK). Tables L.1 and AA.1.iii must be completed by all facilities with well testing subject to reporting under 98.232. Table L.2 is required for the identification of missing data procedures used for well testing emission calculations. Table L.3 is required for Well Testing data delayed two years prior to the current reporting year.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Optional delayed reporting requirements for wildcat wells and delineation wells

https://www.ccdsupport.com/confluence/pages/viewpage.action?pageId=267583519

Total Emissions for Well Testing [98.236(l)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Applicability

Did the facility perform well testing that resulted in venting or flaring subject to reporting under 98.232 [98.236(l)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Well Testing

Well testing [Table L.1]:

CLICK HERE

For Missing data procedures [Table L.2]:

CLICK HERE

Delayed Well Testing data (for delays claimed two years prior) [Table L.3]:

CLICK HERE

For well-specific reporting requirements [Table AA.1.iii]:

CLICK HERE

RETURN TO TOP

Table L.1 Well testing emissions

For Equation W-17A

For Equation W-17B

Venting Emissions

Flaring Emissions

Equation used to calculate annual volumetric natural gas emissions? [98.236(l)]

Were well testing emissions vented or flared? [98.236(l)]

Number of wells tested in calendar year [98.236(l)(1)(i)] [98.236(l)(2)(i)] [98.236(l)(3)(i)] [98.236(l)(4)(i)]

Average number of days wells were tested [98.236(l)(1)(iii)] [98.236(l)(2)(iii)] [98.236(l)(3)(iii)] [98.236(l)(4)(iii)]

Are the only wells used to calculate "flow rates" or "production rates" wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(l)(1)(v)] [98.236(l)(2)(v)] [98.236(l)(3)(iv)] [98.236(l)(4)(iv)]

Average Gas to Oil Ratio (GOR) for Wells Tested (cubic feet of gas per barrel oil) [98.236(l)(1)(iv)] [98.236(l)(2)(iv)]

Average flow rate for well(s) tested, FR (barrels of oil per day) [98.236(l)(1)(v)] [98.236(l)(2)(v)]

Average annual production rate for well(s) tested (cubic feet per day) [98.236(l)(3)(iv)] [98.236(l)(4)(iv)]

Is GOR (for W-17A) or production rate (for W-17B) reported on an Actual or Standard basis? [98.236]

Temperature used to calculate GOR or production rate (oF) [98.236]

Pressure used to calculate GOR or production rate (psi) [98.236]

Total CO2 emissions from venting (mt CO2) [98.236(l)(1)(vi)] [98.236(l)(3)(v)]

Total CH4 emissions from venting (mt CH4) [98.236(l)(1)(vii)] [98.236(l)(3)(vi)]

Total CO2 emissions from flaring (mt CO2) [98.236(l)(2)(vi)] [98.236(l)(4)(v)]

Total CH4 emissions from flaring (mt CH4) [98.236(l)(2)(vii)] [98.236(l)(4)(vi)]

Total N2O emissions from flaring (mt N2O) [98.236(l)(2)(vii)] [98.236(l)(4)(vii)]

Table L.2 Missing data procedures used for Well Testing emission calculations

RETURN TO TOP

Parameters

Equation used to calculate annual volumetric natural gas emissions? [98.236(l)]

Were well testing emissions vented or flared? [98.236(l)]

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table L.3 Delayed Well Testing data (for delays claimed two years prior)

RETURN TO TOP

Equation used to calculate annual volumetric natural gas emissions? [98.236(l)]

Average flow rate for oil well(s) tested and emissions are not vented to a flare (barrels per day) [98.236(l)(1)(v)]

Average flow rate for oil well(s) tested and emissions are vented to a flare (barrels per day) [98.236(l)(2)(v)]

Average annual production rate for gas well(s) tested and emissions are not vented to a flare (cubic feet per day) [98.236(l)(3)(iv)]

Average annual production rate for gas well(s) tested and emissions are vented to a flare (cubic feet per day) [98.236(l)(4)(iv)]

Was production rate based on actual or standard conditions? [98.236]

Temperature used to calculate the annual production rate (oF) [98.233]

Pressure used to calculate the annual production rate (psi) [98.233]

Well ID Number(s) [98.236(l)(v), (2)(v), (3)(iv), and (4)(iv)]

---

Sheet 15: (m) Associated NG

Associated Natural Gas [98.236(m)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for associated gas venting and flaring:

-Onshore petroleum and natural gas production [98.230(a)(2)]

Table AA.1.iii must be completed for each well subject to reporting under 98.236(m) (see columns AL:AM). Tables M.1 and AA.1.iii must be completed by all facilities with associated gas venting or flaring subject to reporting under 98.232. Table M.2 is required for the identification of missing data procedures used for associated gas emission calculations. Table M.3 is required for Associated Natural Gas data delayed two years prior to the current reporting year.

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Optional delayed reporting requirements for wildcat wells and delineation wells

https://www.ccdsupport.com/confluence/pages/viewpage.action?pageId=267583519

Total Emissions for Associated Gas Venting and Flaring [98.236(m)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Applicability

Did the facility have any associated gas venting or flaring subject to reporting under 98.232 [98.236(m)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Associated NG

Associated Gas Venting and Flaring [Table M.1]:

CLICK HERE

For Missing data procedures [Table M.2]:

CLICK HERE

Delayed Associated NG data (for delays claimed two years prior) [Table M.3]:

CLICK HERE

For well-specific reporting requirements [Table AA.1.iii]:

CLICK HERE

Table M.1 Associated Gas Venting and Flaring

RETURN TO TOP

Venting Emissions

Flaring Emissions

Sub-Basin ID [98.236(m)(1)]

Was the associated natural gas vented or flared? [98.236(m)(2)] [98.236(m)(3)]

Did You Use a Continuous Flow Measurement Device, Use GOR to Calculate the Gas Volume, or Both? [98.236(m)(4)] [98.236(m)(5)] [98.236(m)(6)]

Average gas to oil ratio for the Sub-Basin, Average of GOR (standard cubic feet of gas per barrel of oil) [98.236(m)(4)]

Are the only wells in the sub-basin used to determine "volume of oil produced" or "volume of associated gas sent to sales" wildcat or delineation wells subject to a 2-year delay in reporting? [98.236(m)(5)] [98.236(m)(6)]

Volume of oil produced during venting/flaring, Sum of Vp,q (barrels) [98.236(m)(5)]

Volume of associated gas sent to sales, Sum of SG (standard cubic feet) [98.236(m)(6)]

Number of wells venting associated gas [98.236(m)(7)(i)]

Volume of Associated Gas Vented (standard cubic feet) [98.236(m)(7)(ii)]

Annual CO2 emissions from venting (mt CO2) [98.236(m)(7)(iii)]

Annual CH4 emissions from venting (mt CH4) [98.236(m)(7)(iv)]

Number of wells flaring associated gas [98.236(m)(8)(i)]

Annual CO2 emissions from flaring (mt CO2) [98.236(m)(8)(ii)]

Annual CH4 emissions from flaring (mt CH4) [98.236(m)(8)(iii)]

Annual N2O emissions from flaring (mt N2O) [98.236(m)(8)(iv)]

Table M.2 Missing data procedures used for Associated Gas Venting and Flaring emission calculations

RETURN TO TOP

Sub-basin ID

Parameters

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table M.3 Delayed Associated NG data (for delays claimed two years prior)

RETURN TO TOP

Sub-Basin ID

Volume of oil produced during venting/flaring (barrels) [98.236(m)(5)]

Volume of associated gas sent to sales (standard cubic feet) [98.236(m)(6)]

Well ID Number(s) [98.236(m)(5) and (6)]

---

Sheet 16: (n) Flare Stacks

	Flare Stacks [98.236(n)]			#N/A
	Version	R.10	Back to Summary Tab				11/22/2024
	Worksheet Instructions:
	In accordance with 98.232, only the following industry segments must report data for flare stacks:
	-Onshore petroleum and natural gas production [98.230(a)(2)]
	-Onshore natural gas processing [98.230(a)(3)]
	-Onshore natural gas transmission compression [98.230(a)(4)]
	-Underground natural gas storage [98.230(a)(5)]
	-LNG storage [98.230(a)(6)]
	-LNG import and export equipment [98.230(a)(7)]
	-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]
	IMPORTANT NOTE: The total flare emissions determined under 98.233(n) must be corrected for flare emissions calculated and reported under other tabs to avoid double counting; the flare emissions to report here should include only flare emissions that are not reported under any other tab [98.233(n)(9)]. However, activity data reported for each flare should encompass all streams routed to the flare, even if some emissions are reported under other tabs [98.233(n) and 98.236(n)].
	Table N.1 must be completed by all facilities with flare stacks subject to reporting under 98.232. Table N.2 is required for the identification of missing data procedures used for flare stack emission calculations.
	External Links:
	Subpart W Resources Page	https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems
	Optional Calculation Spreadsheet	https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions
	Help Resources	https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems
		Total Emissions for Flare Stacks [98.236(n)]
		mt CO2	mt CH4	mt N2O
		0.0	0.00	0.000
		Applicability
		Did the facility have flare stacks subject to reporting under 98.232 [98.236(n)]?
		Best Available Monitoring Methods (BAMM) and Missing Data
		Were BAMM used for any parameters to calculate GHG emissions?	Provide a brief description of the BAMM used, parameter measured, and time period.	Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]
		BAMM not available for Flare Stacks
			Flare Stacks [Table N.1]:	CLICK HERE
			For Missing data procedures [Table N.2]:	CLICK HERE
	Table N.1 Flare Stacks											RETURN TO TOP
	Unique Name or ID Number for the Flare Stack [98.236(n)(1)]	Were CEMS used to measure CO2 emissions for the flare stack? [98.233(n)(8)] [98.236(n)(12)]	Does the flare stack have a continuous flow monitor on gas to the flare? [98.236(n)(2)]	Does the flare stack have a continuous gas analyzer on gas to the flare? [98.236(n)(3)]	Volume of gas sent to flare, Vs (standard cubic feet) [98.236(n)(4)]	Fraction of feed gas sent to un-lit flare, Zu [98.236(n)(5)]	Flare combustion efficiency (decimal value) [98.236(n)(6)]	Mole fraction of CH4 in flare feed gas, XCH4 [98.236(n)(7)]	Mole fraction of CO2 in flare feed gas, XCO2 [98.236(n)(8)]	CO2 emissions (mt CO2) [98.236(n)(9)]	CH4 Emissions (mt CH4) (Eq. W-19) [98.236(n)(10)]	N2O Emissions (mt N2O) (Eq. W-40) [98.236(n)(11)]
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	Table N.2 Missing data procedures used for Flare Stacks emission calculations							RETURN TO TOP
	Unique Name or ID Number for the Flare Stack	Parameters	Measurement Frequency	Number of quarters missing data procedures were used [98.236(bb)(1)]	Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]	Procedures Used [98.235(h)]
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---

Sheet 17: (o) Centrifugal Compressors

	Centrifugal Compressors [98.236(o)]			#N/A
	Version	R.10	Back to Summary Tab				11/22/2024
	Worksheet Instructions:
	In accordance with 98.232, only the following industry segments must report data for centrifugal compressors:
	-Onshore petroleum and natural gas production [98.230(a)(2)]
	-Onshore natural gas processing [98.230(a)(3)]
	-Onshore natural gas transmission compression [98.230(a)(4)]
	-Underground natural gas storage [98.230(a)(5)]
	-Liquefied natural gas (LNG) storage [98.230(a)(6)]
	-LNG import and export equipment [98.230(a)(7)]
	-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]
	Tables O.1, O.2.i, and O.2.ii must be completed by all facilities with centrifugal compressors subject to reporting under 98.232 (except Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities). Tables O.3.i and O.3.ii must be completed by facilities using “as found” measurement sample data, i.e., 98.233(o)(2 or 4) and (o)(6) (except Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities). Table O.4 must be completed by facilities using “continuous” measurement data, i.e., 98.233(o)(3 or 5) (except Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities). Table O.5 must be completed by Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities. Table O.6 is required for the identification of missing data procedures used for centrifugal compressor emission calculations.
	External Links:
	Subpart W Resources Page	https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems
	Optional Calculation Spreadsheet	https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions
	Help Resources	https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems
		Total Emissions for Centrifugal Compressors [98.236(o)]
		mt CO2	mt CH4	mt N2O
		0.0	0.00	N/A
		Applicability
		Did the facility have any centrifugal compressors subject to reporting under 98.232 [98.236(o)]?
		For Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting facilities: Did you use volumetric measurements to determine emissions from centrifugal compressors?
		Best Available Monitoring Methods (BAMM) and Missing Data
		Were BAMM used for any parameters to calculate GHG emissions?	Provide a brief description of the BAMM used, parameter measured, and time period.	Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]
		BAMM not available for Centrifugal Compressors
			Compressor-Specific Activity Data [Table O.1]:	CLICK HERE
			Compressor Source-Specific Data [Table O.2.i]:	CLICK HERE
			Compressor Leak or Vent Data [Table O.2.ii]:	CLICK HERE
			Leak or Vent “As Found” Measurement Sample Data [Table O.3.i]:	CLICK HERE
			Reporter Emission Factors for “As Found” Measurement Sample Data [Table O.3.ii]:	CLICK HERE
			Leak or Vent Continuous Measurement [Table O.4]:	CLICK HERE
			Onshore Petroleum and Natural Gas Production and G&B Centrifugal Compressors [Table O.5]:	CLICK HERE
			For Missing data procedures [Table O.6]:	CLICK HERE
	Table O.1 Compressor-Specific Activity Data										RETURN TO TOP
	Complete the following table for each centrifugal compressor (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(o)(10)(iii)):
	Compressor ID or Unique Name [98.236(o)(1)(i)]	Total time in operating-mode (hours) [98.236(o)(1)(ii)]	Total time in not-operating-depressurized-mode (hours) [98.236(o)(1)(iii)]	Compressor measured in operating-mode? [98.236(o)(1)(iv)]	Compressor measured in not-operating-depressurized-mode? [98.236(o)(1)(v)]	Compressor had blind flanges installed? [98.236(o)(1)(x)]	Dates for blind flange installation (mm/dd/yyyy - mm/dd/yyyy) [98.236(o)(1)(x)]	Seal Type (wet or dry) [98.236(o)(1)(xi)]	Number of wet seals [98.236(o)(1)(xii)]	Power output of compressor driver (hp) [98.236(o)(1)(xiii)]	Compressor had scheduled depressurized shutdown during reporting year? [98.236(o)(1)(xiv)]
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	Table O.2.i Compressor Source-Specific Data			RETURN TO TOP
	Complete the following table for each compressor source at each centrifugal compressor (except for those in the Onshore Petroleum and Natural Gas Production and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(o)(10)(iii)):
				Leave column blank if no changes made
	Unique Compressor Name or ID [98.236(o)(2)(i)(A)]	Centrifugal compressor source [98.236(o)(2)(i)(B)]	Unique Name or ID for leak or vent [98.236(o)(2)(i)(C)]	Unit Name or ID for leak or vent if release point changed or controls added during the reporting year [98.236(o)(2)(i)(C)]
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								RETURN TO TOP
	Table O.2.ii Compressor Leak or Vent Data
	Complete the following table for each individual leak or vent and each manifolded vent for centrifugal compressors (except for those in the Onshore Petroleum and Natural Gas Production and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(o)(10)(iii)):
	Unique Name or ID for leak or vent [98.236(o)(2)(i)(C)]	Leak or vent for a single compressor source or a manifolded group? [98.236(o)(2)(ii)(A)] [98.236(o)(1)(vi)]	Where are leak or vent emissions released? [98.236(o)(2)(ii)(A)] [98.236(o)(1)(vii) through (ix)]	Was an "as found" measurement conducted on the leak or vent? [98.236(o)(2)(ii)(B)]	Were continuous measurements conducted on the leak or vent? [98.236(o)(2)(ii)(C)]	CO2 emissions vented to atmosphere (mt CO2) [98.236(o)(2)(ii)(D)(1)]	CH4 emissions vented to atmosphere (mt CH4) [98.236(o)(2)(ii)(D)(2)]	Percentage of time the device was operational when compressor source emissions were routed to device [98.236(o)(2)(ii)(E)]
1	Err:502
2	Err:502
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	Table O.3.i Leak or Vent “As Found” Measurement Sample Data						RETURN TO TOP
	Complete the following table for each centrifugal compressor leak or vent with “as found” measurement sample data determined using 98.233(o)(2) or (4) (except for those in the Onshore Petroleum and Natural Gas Production and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(o)(10)(iii)): If emissions were not detected, report only the screening method below. If emissions were detected, report only the method subsequently used to report the volumetric emission [as per 98.236(o)(3)(i)(C)]. If multiple measurements events for a specific leak/vent occurred, report these events on separate rows of Table O.3.i. If the applicable leak or vent was not measured in Operating mode, please leave column G blank. If the applicable leak or vent was not measured in Not-operating mode, please leave column H blank.
						Mode for each compressor during leak or vent measurement [98.236(o)(3)(i)(E)]
	Unique Name or ID for leak or vent (Specify) [98.236(o)(3)(i)(A)]	Measurement date (mm/dd/yyyy) [98.236(o)(3)(i)(B)]	Measurement method [98.236(o)(3)(i)(C)]	Measured flow rate, MTs,m, MTs,g,avg (standard cubic feet/hour) [98.236(o)(3)(i)(D)]	Is the measurement location prior to or after commingling with non-compressor emission sources? [98.236(o)(3)(i)(F)]	Compressors in “Operating mode”	Compressors in “Not-operating mode”
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6
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8
9
10
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13
14
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16
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19
20
21
22
23
24
25
26
27
28
29
30
	Table O.3.ii Reporter Emission Factors for “As Found” Measurement Sample Data				RETURN TO TOP
	Complete the following table for each centrifugal compressor mode-source combination with “as found” measurement sample data where a reporter emission factor was calculated using Eq. W-23, as specified in 98.233(o)(6)(iii) and (iv), and used in Equation W-22 to calculate emissions (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(o)(10)(iii)):
	Compressor mode-source combinations for which reporter emission factors were developed
	Compressor Mode [98.236(o)(3)(ii)(A)]	Compressor Source [98.236(o)(3)(ii)(A)]	Compressor mode-source combination reporter emission factor, EFs,m (standard cubic feet per hour) [98.236(o)(3)(ii)(B)]	Total number of compressors measured in the compressor mode-source combination in current reporting year and preceding two reporting years [98.236(o)(3)(ii)(C)]	Is the reporter emission factor facility-specific or based on all of the reporter's applicable facilities? [98.236(o)(3)(ii)(D)]
	Operating	Wet seal
	Operating	Blowdown valve
	Not-operating	Isolation valve
	Table O.4 Leak or Vent Continuous Measurement			RETURN TO TOP
	Complete the following table for each centrifugal compressor leak or vent with “continuous” measurement data determined using 98.233(o)(3) or (5) (except for those in the Onshore Petroleum and Natural Gas Production and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(o)(10)(iii)):
	WARNING: Data must be entered in sequential rows. e-GGRT will not process records after an empty row.
	Unique Name or ID for leak or vent [98.236(o)(4)(i)]	Measured volume of flow during the reporting year, Qs,v, Qs,g (million standard cubic feet) [98.236(o)(4)(ii)]	Did the measured volume of flow during the reporting year include compressor blowdowns? [98.236(o)(4)(iii)]	Is the measurement location prior to or after commingling with non-compressor emission sources [98.236(o)(4)(iv)]
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13
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15
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18
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20
	Table O.5 Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting Centrifugal Compressors that Calculate Emissions According to §98.233(o)(10)(iii))			RETURN TO TOP
	Number of Centrifugal Compressors with wet seal oil degassing vents, Count [98.236(o)(5)(i)]	Total annual Centrifugal Compressor emissions CO2 Emissions (mt CO2) [98.236(o)(5)(ii)]	Total annual Centrifugal Compressor emissions CH4 Emissions (mt CH4) [98.236(o)(5)(iii)]
	Table O.6 Missing data procedures used for Centrifugal Compressor emission calculations											RETURN TO TOP
	Types of Data	Compressor ID	Unique Name or ID for leak or vent	Compressor mode	Compressor source	Parameters	Measurement Frequency	Number of quarters missing data procedures were used [98.236(bb)(1)]	Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]	Procedures used [98.235(h)]
	Table O.1 Compressor Activity Data
	Table O.3.i Leak or Vent "As Found" Measurement Sample Data
	Table O.3.ii Leak or Vent Reporter Emission Factors for "As Found" Measurement Sample Data
	Table O.4 Leak or Vent Continuous Measurement Data
	Table O.5 Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting Centrifugal Compressors

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Sheet 18: (p) Reciprocating Compressors

	Reciprocating Compressors [98.236(p)]			#N/A
	Version	R.10	Back to Summary Tab				11/22/2024
	Worksheet Instructions:
	In accordance with 98.232, only the following industry segments must report data for reciprocating compressors:
	-Onshore petroleum and natural gas production [98.230(a)(2)]
	-Onshore natural gas processing [98.230(a)(3)]
	-Onshore natural gas transmission compression [98.230(a)(4)]
	-Underground natural gas storage [98.230(a)(5)]
	-Liquefied natural gas (LNG) storage [98.230(a)(6)]
	-LNG import and export equipment [98.230(a)(7)]
	-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]
	Tables P.1, P.2.i, and P.2.ii must be completed by all facilities with reciprocating compressors subject to reporting under 98.232 (except Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities). Tables P.3.i and P.3.ii must be completed by facilities using “as found” measurement sample data, i.e., 98.233(p)(2 or 4) and (p)(6) (except Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities). Table P.4 must be completed by facilities using “continuous” measurement data, i.e., 98.233(p)(3 or 5) (except Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities). Table P.5 must be completed by Onshore petroleum and natural gas production facilities and Onshore petroleum and natural gas gathering and boosting facilities. Table P.6 is required for the identification of missing data procedures used for reciprocating compressor emission calculations.
	External Links:
	Subpart W Resources Page	https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems
	Optional Calculation Spreadsheet	https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions
	Help Resources	https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems
		Total Emissions for Reciprocating Compressors [98.236(p)]
		mt CO2	mt CH4	mt N2O
		0.0	0.00	N/A
		Applicability
		Did the facility have any reciprocating compressors subject to reporting under 98.232 [98.236(p)]?
		For Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting facilities: Did you use volumetric measurements to determine emissions from reciprocating compressors?
		Best Available Monitoring Methods (BAMM) and Missing Data
		Were BAMM used for any parameters to calculate GHG emissions?	Provide a brief description of the BAMM used, parameter measured, and time period.	Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]
		BAMM not available for Reciprocating Compressors
			Compressor-Specific Activity Data [Table P.1]:	CLICK HERE
			Compressor Source-Specific Data [Table P.2.i]:	CLICK HERE
			Compressor Leak or Vent Data [Table P.2.ii]:	CLICK HERE
			Leak or Vent “As Found” Measurement Sample Data [Table P.3.i]:	CLICK HERE
			Reporter Emission Factors for “As Found” Measurement Sample Data [Table P.3.ii]:	CLICK HERE
			Leak or Vent Continuous Measurement [Table P.4]:	CLICK HERE
			Onshore Petroleum and Natural Gas Production and G&B Reciprocating Compressors [Table P.5]:	CLICK HERE
			For Missing data procedures [Table P.6]:	CLICK HERE
	Table P.1 Compressor-Specific Activity Data										RETURN TO TOP
	Complete the following table for each reciprocating compressor (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(p)(10)(iii)):
	Unique name or ID for reciprocating compressor [98.236(p)(1)(i)]	Total time in operating-mode (hours) [98.236(p)(1)(ii)]	Total time in standby-pressurized-mode (hours) [98.236(p)(1)(iii)]	Total time in not-operating-depressurized-mode (hours) [98.236(p)(1)(iv)]	Compressor measured in operating-mode? [98.236(p)(1)(v)]	Compressor measured in standby-pressurized-mode? [98.236(p)(1)(vi)]	Compressor measured in not-operating-depressurized-mode? [98.236(p)(1)(vii)]	Compressor had blind flanges installed? [98.236(p)(1)(xii)]	Dates for blind flange installation (mm/dd/yyyy - mm/dd/yyyy) [98.236(p)(1)(xii)]	Power output of compressor driver (hp) [98.236(p)(1)(xiii)]	Compressor had scheduled depressurized shutdown during reporting year? [98.236(p)(1)(xiv)]
1
2
3
4
5
6
7
8
9
10
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12
13
14
15
16
17
18
19
20
	Table P.2.i Compressor Source-Specific Data			RETURN TO TOP
	Complete the following table for each compressor source at each reciprocating compressor (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(p)(10)(iii)):
				Leave column blank if no changes made
	Unique name or ID for reciprocating compressor [98.236(p)(2)(i)(A)]	Reciprocating compressor source [98.236(p)(2)(i)(B)]	Unique Name or ID for leak or vent [98.236(p)(2)(i)(C)]	Unit Name or ID for leak or vent if release point changed or controls added during the reporting year [98.236(p)(2)(i)(C)]
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31
32
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40
41
42
43
44
45
46
47
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49
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51
52
53
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55
56
57
58
59
60
	Table P.2.ii Compressor Leak or Vent Data							RETURN TO TOP
	Complete the following table for each individual leak or vent and each manifolded vent for reciprocating compressors (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(p)(10)(iii)):
	Unique Name or ID for leak or vent [98.236(p)(2)(i)(C)]	Leak or vent for a single compressor source or a manifolded group? [98.236(p)(2)(ii)(A)] [98.236(p)(1)(viii)]	Where are leak or vent emissions released? [98.236(p)(2)(ii)(A)] [98.236(p)(1)(ix) through (xi)]	Was an "as found" measurement conducted on the leak or vent? [98.236(p)(2)(ii)(B)]	Were continuous measurements conducted on the leak or vent? [98.236(p)(2)(ii)(C)]	CO2 Emissions vented to atmosphere (mt CO2) [98.236(p)(2)(ii)(D)(1)]	CH4 Emissions vented to atmosphere (mt CH4) [98.236(p)(2)(ii)(D)(2)]	Percentage of time the device was operational when compressor source emissions were routed to device [98.236(p)(2)(ii)(E)]
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23
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27
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30
31
32
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35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
	Table P.3.i Leak or Vent “As Found” Measurement Sample Data							RETURN TO TOP
	Complete the following table for each reciprocating compressor leak or vent with “as found” measurement sample data determined using 98.233(p)(2) or (4) (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(p)(10)(iii)): If emissions were not detected, report only the screening method below. If emissions were detected, report only the method subsequently used to report the volumetric emission [as per [98.236(p)(3)(i)(C)]. If multiple measurements events for a specific leak/vent occurred, report these events on separate rows of Table P.3.i. If the applicable leak or vent was not measured in Operating mode, please leave column G blank. If the applicable leak or vent was not measured in Standby-pressurized mode, please leave column H blank. If the applicable leak or vent was not measured in Not-operating mode, please leave column I blank.
						Mode for each compressor during leak or vent measurement [98.236(p)(3)(i)(E)]
	Unique Name or ID for leak or vent (Specify) [98.236(p)(2)(i)(C)] [98.236(p)(3)(i)(A)]	Measurement date (mm/dd/yyyy) [98.236(p)(3)(i)(B)]	Measurement method [98.236(p)(3)(i)(C)]	Measured flow rate (standard cubic feet/hour) [98.236(p)(3)(i)(D)]	Is the measurement location prior to or after commingling with non-compressor emission sources? [98.236(p)(3)(i)(F)]	Compressors in “Operating mode”	Compressors in "Standby-pressurized mode"	Compressors in “Not-operating mode”
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3
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5
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9
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13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
	Table P.3.ii Reporter Emission Factors for “As Found” Measurement Sample Data				RETURN TO TOP
	Complete the following table for each reciprocating compressor mode-source combination with “as found” measurement sample data where a reporter emission factor was calculated using Eq. W-28, as specified in 98.233(p)(6)(iii) and (iv), and used in Equation W-27 to calculate emissions (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(p)(10)(iii)):
	Compressor mode-source combinations for which reporter emission factors were developed
	Compressor Mode [98.236(p)(3)(ii)(A)]	Compressor Source [98.236(p)(3)(ii)(A)]	Compressor mode-source combination reporter emission factor, EFs,m (standard cubic feet per hour) [98.236(p)(3)(ii)(B)]	Total number of compressors measured in the compressor mode-source combination in current reporting year and preceding two reporting years, Countm [98.236(p)(3)(ii)(C)]	Is the reporter emission factor facility-specific or based on all of the reporter's applicable facilities? [98.236(p)(3)(ii)(D)]
	Operating	Blowdown valve
	Operating	Rod packing
	Standby-pressurized	Blowdown valve
	Not-operating-depressurized	Isolation valve
	Table P.4 Leak or Vent Continuous Measurement			RETURN TO TOP
	Complete the following table for each reciprocating compressor leak or vent with “continuous” measurement data determined using 98.233(p)(3) or (5) (except for those in the Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting segments that calculate emissions according to §98.233(p)(10)(iii)):
	WARNING: Data must be entered in sequential rows. e-GGRT will not process records after an empty row.
	Unique Name or ID for leak or vent [98.236(p)(2)(i)(C)] [98.236(p)(4)(i)]	Measured volume of flow during the reporting year Qs,v, Qs,g (million standard cubic feet) [98.236(p)(4)(ii)]	Did the measured volume of flow during the reporting year include compressor blowdowns? [98.236(p)(4)(iii)]	Is the measurement location prior to or after commingling with non-compressor emission sources? [98.236(p)(4)(iv)]
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7
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12
13
14
15
16
17
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19
20
	Table P.5 Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting Reciprocating Compressors that Calculate Emissions According to §98.233(p)(10)(iii))			RETURN TO TOP
	Count of Reciprocating Compressors [98.236(p)(5)(i)]	Total annual Reciprocating Compressor emissions CO2 Emissions (mt CO2) [98.236(p)(5)(ii)]	Total annual Reciprocating Compressor emissions CH4 Emissions (mt CH4) [98.236(p)(5)(iii)]
	Table P.6 Missing data procedures used for Reciprocating Compressor emission calculations											RETURN TO TOP
	Type of Data	Compressor ID	Unique Name or ID for leak or vent	Compressor mode	Compressor source	Parameters	Measurement Frequency	Number of quarters missing data procedures were used [98.236(bb)(1)]	Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]	Procedures used [98.235(h)]
	Table P.1 Compressor Activity Data
	Table P.3.i Leak or Vent "As Found" Measurement Sample Data
	Table P.3.ii Leak or Vent Reporter Emission Factors for "As Found" Measurement Sample Data
	Table P.4 Leak or Vent Continuous Measurement Data
	Table P.5 Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting Reciprocating Compressors

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Sheet 19: (q,r) Equipment Leaks

Equipment Leaks Surveys and Population Counts [98.236(q,r)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segments must report data for other emissions from equipment leaks estimated using emission factors:

-Onshore petroleum and natural gas production [98.230(a)(2)]

-Onshore natural gas processing [98.230(a)(3)]

-Onshore natural gas transmission compression [98.230(a)(4)]

-Underground natural gas storage [98.230(a)(5)]

-Liquefied natural gas (LNG) storage [98.230(a)(6)]

-LNG import and export equipment [98.230(a)(7)]

-Natural Gas Distribution [98.230(a)(8)]

-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Equipment Leaks Help Content

https://www.ccdsupport.com/confluence/display/help/Equipment+Leaks+Surveys+and+Population+Counts

Total Other Emissions from Equipment Leaks Estimated Using Emission Factors [98.236(q,r)]

NOTE: Industry segment-specific instructions on the expected combinations of responses to the applicability questions below are available at:

mt CO2

mt CH4

mt N2O

0.0

0.00

N/A

https://ccdsupport.com/confluence/display/help/Applicability+Options+for+Equipment+Leaks+Surveys+and+Population+Counts

#N/A

If you require additional clarification, please contact the GHGRP Help Desk at [email protected] before proceeding.

Applicability

Did this facility use leak surveys to calculate emissions from equipment leaks in accordance with 98.232 [per 98.236(q)]?

Did this facility use population counts to calculate emissions from equipment leaks in accordance with 98.232 [per 98.236(r)]?

Are any equipment components at the facility subject to the well site or compressor station fugitive emissions standards under 40 CFR Part 60, Subpart OOOOa [98.236(q)(1)(iii)]?

Did the facility elect to comply with 98.236(q) according to 98.233(q)(1)(iv) for any components at the facility [per 98.236(q)(1)(iv)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Equipment Leaks

Industry-specific navigation links

Applicable table(s) for this industry segment: '0'

As required for leak surveys in 98.236(q)

Table Q.1

CLICK HERE

Leak Survey Characterization

Table Q.2.i

CLICK HERE

Leak Survey Calculation Method

Table Q.2.ii

CLICK HERE

Emissions Calculated for Component Types Using Emissions Factors per Calculation Method 1.

Table Q.2.iii

CLICK HERE

Emissions Calculated for Component Types Using Direct Measurements per Calculation Method 2.

Table Q.3

CLICK HERE

Natural gas distribution facility activity and emissions

As required for population counts in 98.236(r)

Table R.1

CLICK HERE

Equipment leaks calculated using population counts and factors

Table R.2

CLICK HERE

Emissions calculated for component types by population count

Table R.3

CLICK HERE

Equipment leaks calculated using population counts and factors

Table R.4

CLICK HERE

Major Equipment Type

As required if missing data procedures were used 98.235

Table QR.1

CLICK HERE

For Missing data procedures

Table Q.1 Leak Survey Characterization

Method Used to Conduct Leak Surveys [98.236(q)(1)(v)] Select all that apply

Number of complete equipment leak surveys performed during the calendar year [98.236(q)(1)(i)]

For Natural gas distribution facilities conducting multi-year surveys, number of years in the leak survey cycle [98.236(q)(1)(ii)]

Optical gas imaging instrument as specified in §60.18 [98.234(a)(1)]

Method 21 [98.234(a)(2)]

Infrared laser beam illuminated instrument [98.234(a)(3)]

Acoustic leak detection device [98.234(a)(5)]

Optical gas imaging instrument as specified in §60.5397a [98.234(a)(6)]

Method 21 as specified in §60.5397a [98.234(a)(7)]

Table Q.2.i Leak Survey Calculation Method

RETURN TO TOP

Were Emissions for a Complete Leak Survey Calculated Using Calculation Method 1? (Leaker Emission Factor Calculation Methodology) [98.236(q)(1)(vi)]

Were Emissions for a Complete Leak Survey Calculated Using Calculation Method 2? (Leaker Measurement Methodology) [98.236(q)(1)(vi)]

Table Q.2.ii: Emissions Calculated for Component Types Using Emissions Factors per Calculation Method 1.

RETURN TO TOP

Complete the following table for each component type that uses emission factors for estimating emissions for equipment leaks found in each leak survey:

Report the count of components surveyed of all component types and the emissions from those component types (as calculated by Equation W-30) for your industry segment. If no leaks were identified from any components of a component type during the leak survey, enter "0" in columns G through I for that component type.

Component Type [98.236(q)(2)(i)]

Emission Factor Used [98.236(q)(2)(iv)]

Total Number of Components Surveyed by Type [98.236(q)(2)(v)]

Number of Leaks Identified for the Specified Component Type [98.236(q)(2)(vi)]

Average Duration of Leaks for the Specified Component Type (hours) [98.236(q)(2)(vii)]

CO2 Emissions (Surveyed Components Identified as Leaking Only) (mt CO2) [98.236(q)(2)(viii)]

CH4 Emissions (Surveyed Components Identified as Leaking Only) (mt CH4) [98.236(q)(2)(ix)]

Onshore petroleum and natural gas production and Onshore petroleum and natural gas gathering and boosting [98.232(c)(21) and (j)10)] (Table W-1E)

Onshore Production or GB Components, Gas Service - Valve

Onshore Production or GB Components, Gas Service - Flange

Onshore Production or GB Components, Gas Service - Connector (other)

Onshore Production or GB Components, Gas Service - Open-Ended Line

Onshore Production or GB Components, Gas Service - Pressure Relief Valve

Onshore Production or GB Components, Gas Service - Pump Seal

Onshore Production or GB Components, Gas Service - Other

Onshore Production or GB Components, Light Crude Service - Valve

Onshore Production or GB Components, Light Crude Service - Flange

Onshore Production or GB Components, Light Crude Service - Connector (other)

Onshore Production or GB Components, Light Crude Service - Open-Ended Line

Onshore Production or GB Components, Light Crude Service - Pump

Onshore Production or GB Components, Light Crude Service - Agitator Seal

Onshore Production or GB Components, Light Crude Service - Other

Onshore Production or GB Components, Heavy Crude Service - Valve

Onshore Production or GB Components, Heavy Crude Service - Flange

Onshore Production or GB Components, Heavy Crude Service - Connector (other)

Onshore Production or GB Components, Heavy Crude Service - Open-Ended Line

Onshore Production or GB Components, Heavy Crude Service - Pump

Onshore Production or GB Components, Heavy Crude Service - Agitator Seal

Onshore Production or GB Components, Heavy Crude Service - Other

Onshore natural gas processing [98.232(d)(7)] - (Table W-2)

Compressor Components, Gas Service - Valve

Compressor Components, Gas Service - Connector

Compressor Components, Gas Service - Open-ended Line

Compressor Components, Gas Service - Pressure Relief Valve

Compressor Components, Gas Service - Meter

Non-Compressor Components, Gas Service - Valve

Non-Compressor Components, Gas Service - Connector

Non-Compressor Components, Gas Service - Open-ended Line

Non-Compressor components, Gas Service - Pressure Relief Valve

Non-Compressor components, Gas Service - Meter

Onshore natural gas transmission compression [98.232(e)(7-8)] (Table W-3A)

Compressor Components, Gas Service - Valve

Compressor Components, Gas Service - Connector

Compressor Components, Gas Service - Open-ended Line

Compressor Components, Gas Service - Pressure Relief Valve

Compressor Components, Gas Service - Meter or Instrument

Compressor Components, Gas Service - Other

Non-Compressor Components, Gas Service - Valve

Non-Compressor Components, Gas Service - Connector

Non-Compressor Components, Gas Service - Open-ended Line

Non-Compressor components, Gas Service - Pressure Relief Valve

Non-Compressor components, Gas Service - Meter or Instrument

Non-Compressor components, Gas Service - Other

Underground natural gas storage [98.232(f)(5-8)] (Table W-4A)

Storage Station, Gas Service - Valve

Storage Station, Gas Service - Connector (other)

Storage Station, Gas Service - Open-ended Line

Storage Station, Gas Service - Pressure Relief Valve

Storage Station, Gas Service - Meter and Instrument

Storage Station, Gas Service - Other

Storage Wellheads, Gas Service - Valve

Storage Wellheads, Gas Service - Connector (other than flanges)

Storage Wellheads, Gas Service - Flange

Storage Wellheads, Gas Service - Open-Ended Line

Storage Wellheads, Gas Service - Pressure Relief Valve

Storage Wellheads, Gas Service - Other

Liquefied natural gas (LNG) storage [98.232(g)(4,6,7)] (Table W-5A)

LNG Storage, LNG Service - Valve

LNG Storage, LNG Service - Connector

LNG Storage, LNG Service - Pump Seal

LNG Storage, LNG Service - Other

LNG Storage, Gas Service - Valve

LNG Storage, Gas Service - Connector

LNG Storage, Gas Service - Open-Ended Line

LNG Storage, Gas Service - Pressure Relief Valve

LNG Storage, Gas Service - Meter and Instrument

LNG Storage, Gas Service - Other

LNG import and export equipment [98.232(h)(5,7,8)] (Table W-6A)

LNG Terminal, LNG Service - Valve

LNG Terminal, LNG Service - Connector

LNG Terminal, LNG Service - Pump Seal

LNG Terminal, LNG Service - Other

LNG Terminal, Gas Service - Valve

LNG Terminal, Gas Service - Connector

LNG Terminal, Gas Service - Open-ended Line

LNG Terminal, Gas Service - Pressure Relief Valve

LNG Terminal, Gas Service - Meter and Instrument

LNG Terminal, Gas Service - Other

Natural gas distribution [Note: limited to equipment leaks at above grade transmission-distribution transfer stations] [98.232(i)(1)] (Table W-7)

Transmission-Distribution Transfer Station Components, Gas Service - Connector

Transmission-Distribution Transfer Station Components, Gas Service - Block Valve

Transmission-Distribution Transfer Station Components, Gas Service - Control Valve

Transmission-Distribution Transfer Station Components, Gas Service - Pressure Relief Valve

Transmission-Distribution Transfer Station Components, Gas Service - Orifice Meter

Transmission-Distribution Transfer Station Components, Gas Service - Regulator

Transmission-Distribution Transfer Station Components, Gas Service - Open-ended line

Table Q.2.iii: Emissions Calculated for Component Types Using Direct Measurements per Calculation Method 2.

RETURN TO TOP

Complete the following table for each component type that uses direct measurements for equipment leaks found in each leak survey:

Report the count of components surveyed of all component types and the emissions from those component types (as calculated by Equation W-30) for your industry segment. If no leaks were identified from any components of a component type during the leak survey, enter "0" in columns G through I for that component type.

Component Type [98.236(q)(2)(i)]

Measurement Method Used [98.236(q)(2)(iv)]

Total Number of Components Surveyed by Type [98.236(q)(2)(v)]

Number of Leaks Measured for the Specified Component Type [98.236(q)(2)(vi)]

Average Duration of Leaks for the Specified Component Type (hours) [98.236(q)(2)(vii)]

CO2 Emissions (Surveyed Components Identified as Leaking Only) (mt CO2) [98.236(q)(2)(viii)]

CH4 Emissions (Surveyed Components Identified as Leaking Only) (mt CH4) [98.236(q)(2)(ix)]

Onshore petroleum and natural gas production and Onshore petroleum and natural gas gathering and boosting [98.232(c)(21) and (j)10)] (Table W-1E)

Onshore Production or GB Components, Gas Service - Valve

Direct Measurement

Onshore Production or GB Components, Gas Service - Flange

Direct Measurement

Onshore Production or GB Components, Gas Service - Connector (other)

Direct Measurement

Onshore Production or GB Components, Gas Service - Open-Ended Line

Direct Measurement

Onshore Production or GB Components, Gas Service - Pressure Relief Valve

Direct Measurement

Onshore Production or GB Components, Gas Service - Pump Seal

Direct Measurement

Onshore Production or GB Components, Gas Service - Other

Direct Measurement

Onshore Production or GB Components, Light Crude Service - Valve

Direct Measurement

Onshore Production or GB Components, Light Crude Service - Flange

Direct Measurement

Onshore Production or GB Components, Light Crude Service - Connector (other)

Direct Measurement

Onshore Production or GB Components, Light Crude Service - Open-Ended Line

Direct Measurement

Onshore Production or GB Components, Light Crude Service - Pump

Direct Measurement

Onshore Production or GB Components, Light Crude Service - Agitator Seal

Direct Measurement

Onshore Production or GB Components, Light Crude Service - Other

Direct Measurement

Onshore Production or GB Components, Heavy Crude Service - Valve

Direct Measurement

Onshore Production or GB Components, Heavy Crude Service - Flange

Direct Measurement

Onshore Production or GB Components, Heavy Crude Service - Connector (other)

Direct Measurement

Onshore Production or GB Components, Heavy Crude Service - Open-Ended Line

Direct Measurement

Onshore Production or GB Components, Heavy Crude Service - Pump

Direct Measurement

Onshore Production or GB Components, Heavy Crude Service - Agitator Seal

Direct Measurement

Onshore Production or GB Components, Heavy Crude Service - Other

Direct Measurement

Onshore natural gas processing [98.232(d)(7)] - (Table W-2)

Compressor Components, Gas Service - Valve

Direct Measurement

Compressor Components, Gas Service - Connector

Direct Measurement

Compressor Components, Gas Service - Open-ended Line

Direct Measurement

Compressor Components, Gas Service - Pressure Relief Valve

Direct Measurement

Compressor Components, Gas Service - Meter

Direct Measurement

Non-Compressor Components, Gas Service - Valve

Direct Measurement

Non-Compressor Components, Gas Service - Connector

Direct Measurement

Non-Compressor Components, Gas Service - Open-ended Line

Direct Measurement

Non-Compressor components, Gas Service - Pressure Relief Valve

Direct Measurement

Non-Compressor components, Gas Service - Meter

Direct Measurement

Onshore natural gas transmission compression [98.232(e)(7-8)] (Table W-3A)

Compressor Components, Gas Service - Valve

Direct Measurement

Compressor Components, Gas Service - Connector

Direct Measurement

Compressor Components, Gas Service - Open-ended Line

Direct Measurement

Compressor Components, Gas Service - Pressure Relief Valve

Direct Measurement

Compressor Components, Gas Service - Meter or Instrument

Direct Measurement

Compressor Components, Gas Service - Other

Direct Measurement

Non-Compressor Components, Gas Service - Valve

Direct Measurement

Non-Compressor Components, Gas Service - Connector

Direct Measurement

Non-Compressor Components, Gas Service - Open-ended Line

Direct Measurement

Non-Compressor components, Gas Service - Pressure Relief Valve

Direct Measurement

Non-Compressor components, Gas Service - Meter or Instrument

Direct Measurement

Non-Compressor components, Gas Service - Other

Direct Measurement

Underground natural gas storage [98.232(f)(5-8)] (Table W-4A)

Storage Station, Gas Service - Valve

Direct Measurement

Storage Station, Gas Service - Connector (other)

Direct Measurement

Storage Station, Gas Service - Open-ended Line

Direct Measurement

Storage Station, Gas Service - Pressure Relief Valve

Direct Measurement

Storage Station, Gas Service - Meter and Instrument

Direct Measurement

Storage Station, Gas Service - Other

Direct Measurement

Storage Wellheads, Gas Service - Valve

Direct Measurement

Storage Wellheads, Gas Service - Connector (other than flanges)

Direct Measurement

Storage Wellheads, Gas Service - Flange

Direct Measurement

Storage Wellheads, Gas Service - Open-Ended Line

Direct Measurement

Storage Wellheads, Gas Service - Pressure Relief Valve

Direct Measurement

Storage Wellheads, Gas Service - Other

Direct Measurement

Liquefied natural gas (LNG) storage [98.232(g)(4,6,7)] (Table W-5A)

LNG Storage, LNG Service - Valve

Direct Measurement

LNG Storage, LNG Service - Connector

Direct Measurement

LNG Storage, LNG Service - Pump Seal

Direct Measurement

LNG Storage, LNG Service - Other

Direct Measurement

LNG Storage, Gas Service - Valve

Direct Measurement

LNG Storage, Gas Service - Connector

Direct Measurement

LNG Storage, Gas Service - Open-Ended Line

Direct Measurement

LNG Storage, Gas Service - Pressure Relief Valve

Direct Measurement

LNG Storage, Gas Service - Meter and Instrument

Direct Measurement

LNG Storage, Gas Service - Other

Direct Measurement

LNG import and export equipment [98.232(h)(5,7,8)] (Table W-6A)

LNG Terminal, LNG Service - Valve

Direct Measurement

LNG Terminal, LNG Service - Connector

Direct Measurement

LNG Terminal, LNG Service - Pump Seal

Direct Measurement

LNG Terminal, LNG Service - Other

Direct Measurement

LNG Terminal, Gas Service - Valve

Direct Measurement

LNG Terminal, Gas Service - Connector

Direct Measurement

LNG Terminal, Gas Service - Open-ended Line

Direct Measurement

LNG Terminal, Gas Service - Pressure Relief Valve

Direct Measurement

LNG Terminal, Gas Service - Meter and Instrument

Direct Measurement

LNG Terminal, Gas Service - Other

Direct Measurement

Natural gas distribution [Note: limited to equipment leaks at above grade transmission-distribution transfer stations] [98.232(i)(1)] (Table W-7)

Transmission-Distribution Transfer Station Components, Gas Service - Connector

Direct Measurement

Transmission-Distribution Transfer Station Components, Gas Service - Block Valve

Direct Measurement

Transmission-Distribution Transfer Station Components, Gas Service - Control Valve

Direct Measurement

Transmission-Distribution Transfer Station Components, Gas Service - Pressure Relief Valve

Direct Measurement

Transmission-Distribution Transfer Station Components, Gas Service - Orifice Meter

Direct Measurement

Transmission-Distribution Transfer Station Components, Gas Service - Regulator

Direct Measurement

Transmission-Distribution Transfer Station Components, Gas Service - Open-ended line

Direct Measurement

Table Q.3 Natural gas distribution facility activity and emissions

RETURN TO TOP

Complete the following table for Natural Gas Distribution facilities with emission sources listed in 98.232(i)(1):

Report the leak survey data from above grade T-D transfer stations and meter/regulator runs for the calendar year and for the current leak survey cycle.

NOTE: If you do not have any metering-regulating stations or transmission-distribution (T-D) transfer stations, enter zero, do not leave blank.

Surveyed in calendar year:

Total number of above grade T-D transfer stations surveyed in the calendar year [98.236(q)(3)(i)]

Number of meter/regulator runs at above grade T-D transfer stations surveyed in the calendar year, CountMR,y [98.236(q)(3)(ii)]

Average time meter/regulator runs surveyed in calendar year were operational, Average of calendar year Tw,y (hours) [98.236(q)(3)(iii)]

Surveyed in current leak survey cycle:

Number of above grade T-D transfer stations surveyed in current leak survey cycle [98.236(q)(3)(iv)]

Number of meter/regulator runs at above grade T-D transfer stations surveyed in current leak survey cycle, Sum of CountMR,y [98.236(q)(3)(v)]

Average time that meter/regulator runs surveyed in the current leak survey cycle were operational, Average of current survey Tw,y (hours) [98.236(q)(3)(vi)]

Meter/regulator run CO2 emission factor based on all surveyed T-D transfer stations in current leak cycle, Average of current survey EFS,MR,i (standard cubic feet per operational hour of all meter/regulator runs) [98.236(q)(3)(vii)]

Meter/regulator run CH4 emission factor based on all surveyed T-D transfer stations in current leak cycle, Average of current survey EFS,MR,i (standard cubic feet per operational hour of all meter/regulator runs) [98.236(q)(3)(viii)]

Surveyed in multiple year leak survey cycle:

Does the facility perform equipment leak surveys across a multiple year leak survey cycle (Yes/No) [98.236(q)(3)(ix)]

Total number of meter/regulator runs at above grade T-D station facilities, CountMR [98.236(q)(3)(ix)(A)]

Average estimated time that each meter/regulator run at above grade T-D transfer stations was operational in the calendar year, Tw,avg (hours) [98.236(q)(3)(ix)(B)]

Annual CO2 emissions from all above grade T-D transfer stations combined (mt CO2) [98.236(q)(3)(ix)(C)]

Annual CH4 emissions from all above grade T-D transfer stations combined (mt CH4) [98.236(q)(3)(ix)( D)]

Table R.1 Equipment leaks calculated using population counts and factors (for Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting only)

RETURN TO TOP

If the facility does not have a specified emission source type, enter "0" in column D, Counte for that row.

Emission Source Type (Eq. W-32A) [98.232(c)(21)] [98.233(r)]

Geographic Location (according to Table W-1D) [98.236(r)(1)(i)]

Total number of emission source type, Counte (for gathering pipelines, this value is the number of miles of pipeline per material type) [98.236(r)(1)(ii)]

Average estimated time that the emission source type was operational in the calendar year, Te (hours) [98.236(r)(1)(iii)]

CO2 Emissions (mt CO2) [98.236(r)(1)(iv)]

CH4 Emissions (mt CH4) [98.236(r)(1)(v)]

Gas Service - Valves

Gas Service - Connectors

Gas Service - Open ended lines

Gas Service - Pressure relief valves

Light crude service - Valves

Light crude service - Flanges

Light crude service - Connectors

Light crude service - Open ended lines

Light crude service - Pumps

Light crude service - Other equipment leak sources (such as instruments, loading arms, stuffing boxes, compressor seals, dump lever arms, breather caps)

Heavy crude service - Valves

Heavy crude service - Flanges

Heavy crude service - Connectors

Heavy crude service - Open ended lines

Heavy crude service - Other equipment leak sources (such as instruments, loading arms, stuffing boxes, compressor seals, dump lever arms, breather caps)

Gathering pipelines - Protected steel gathering pipeline

Gathering pipelines - Unprotected steel gathering pipeline

Gathering pipelines - Plastic/composite gathering pipeline

Gathering pipelines - Cast iron gathering pipeline

Table R.2 Emissions calculated for component types by population count

RETURN TO TOP

Complete the following table for each component type that population counts for estimating emissions for equipment leaks using Equation W-32A:

If the facility does not have a specified emission source type, enter "0" in column F for that row.

Emission Source Type (Eq. W-32A) [98.232] [98.233(r)(1)]

Total number of emission source type, Counte [98.236(r)(1)(ii)]

Average estimated time that the emission source type was operational in the calendar year, Te (hours) [98.236(r)(1)(iii)]

CO2 Emissions (mt CO2) [98.236(r)(1)(iv)]

CH4 Emissions (mt CH4) [98.236(r)(1)(v)]

Underground natural gas storage [98.232(f)(5)]

Storage wellheads, Gas Service - Valves

Storage wellheads, Gas Service - Connector

Storage wellheads, Gas Service - Open-ended line

Storage wellheads, Gas Service - Pressure Relief Valve

Liquified natural gas (LNG) storage [98.232(g)(3)]

LNG Storage Compressor, Gas Service - Vapor Recovery Compressor

LNG import and export equipment [98.232(h)(4)]

LNG Terminals Compressor, Gas Service - Vapor Recovery Compressor

Natural gas distribution [98.232(i)(2)]

Below Grade T-D Station, Gas Service, Inlet Pressure > 300 psig

Below Grade T-D Station, Gas Service, Inlet Pressure 100 to 300 psig

Below Grade T-D Station, Gas Service, Inlet Pressure < 100 psig

Natural gas distribution [98.232(i)(4)]

Below Grade M-R Station, Gas Service, Inlet Pressure > 300 psig

Below Grade M-R Station, Gas Service, Inlet Pressure 100 to 300 psig

Below Grade M-R Station, Gas Service, Inlet Pressure < 100 psig

Natural gas distribution [98.232(i)(5)] (Distribution main equipment)

Distribution Mains, Gas Service - Unprotected Steel

Distribution Mains, Gas Service - Protected Steel

Distribution Mains, Gas Service - Plastic

Distribution Mains, Gas Service - Cast Iron

Natural gas distribution [98.232(i)(6)] (Distribution services equipment)

Distribution Services, Gas Service - Unprotected Steel

Distribution Services, Gas Service - Protected Steel

Distribution Services, Gas Service - Plastic

Distribution Services, Gas Service - Copper

Table R.3 Equipment leaks calculated using population counts and factors (for Natural Gas Distribution only)

RETURN TO TOP

NOTE: If you do not have any above grade transmission-distribution (T-D) transfer stations or above grade metering-regulating stations that are not T-D stations, enter zero, do not leave blank.

Number of above grade T-D transfer stations at the facility [98.236(r)(2)(i)]

Number of above grade metering-regulating stations that are not T-D transfer stations [98.236(r)(2)(ii)]

Total number of meter/regulator runs at above grade metering-regulating stations that are not above grade T-D transfer stations, CountMR [98.236(r)(2)(iii)]

Average estimated time that each meter/regulator run at above grade metering-regulating stations that are not above grade T-D transfer stations was operational in the calendar year, Tw,avg (hours) [98.236(r)(2)(iv)]

If your facility has above grade metering-regulating stations that are not above grade T-D transfer stations AND your facility also has above grade T-D transfer stations, you must reporting the following emissions

Annual CO2 emissions from above grade metering-regulating stations that are not above grade T-D transfer stations (mt CO2) [98.236(r)(2)(v)(A)]

Annual CH4 emissions from above grade metering-regulating stations that are not above grade T-D transfer stations (mt CH4) [98.236(r)(2)(v)(B)]

Table R.4 Major Equipment Type for which equipment leak emissions are calculated using the methodology in 98.233(r) (for Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting only)

RETURN TO TOP

Component count calculation method for all emission source types in Table R.1 other than gathering pipelines [98.236(r)(3)(i)]

If the facility does not have a specified Major Equipment Type, enter "No" in column D for that row.

Major Equipment Type [98.236(r)(3)(ii)]

Equipment type present at facility? [98.236(r)(3)(ii)(A)]

Count of Major Equipment Type in Eastern US [98.236(r)(3)(ii)(B)]

Count of Major Equipment Type in Western US [98.236(r)(3)(ii)(B)]

Natural gas production and Gathering and boosting equipment (Table W-1B) [98.236(r)(3)(ii)]

Wellhead

Separators

Meters/piping

Compressors

In-line heaters

Dehydrators

Crude oil production equipment (Table W-1C) [98.236(r)(3)(ii)]

Wellhead

Separators

Heater-treater

Header

Table QR.1 Missing Data Table

RETURN TO TOP

Type of Data [98.3(c)(8)] [98.3(bb)(2)]

Emission Source Type/ Major Equipment Type

Service Type

Component Type

Geographic Location

Parameters

Calculation Method 1 or Calculation Method 2 Used

Emission Factor or Measurement Method Used

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

Table Q.2 Emissions calculated for component types using emissions factors

Table R.1 Equipment leaks calculated using population counts and factors (for Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting only)

Table R.2 Emissions calculated for component types by population count

Table R.3 Equipment leaks calculated using population counts and factors (for Natural Gas Distribution only)

Table R.4 Major Equipment Type (for Onshore Petroleum and Natural Gas Production and Onshore Petroleum and Natural Gas Gathering and Boosting only)

---

Sheet 20: (s) Offshore Emissions

#N/A

Offshore Petroleum and Natural Gas Production [98.236(s)]

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

SEGMENT DEFINITION: Offshore petroleum and natural gas production is defined as any platform structure, affixed temporarily or permanently to offshore submerged lands, that houses equipment to extract hydrocarbons from the ocean or lake floor and that processes and/or transfers such hydrocarbons to storage, transport vessels, or onshore. In addition, offshore production includes secondary platform structures connected to the platform structure via walkways, storage tanks associated with the platform structure and floating production and storage offloading equipment (FPSO). This industry segment does not include reporting of emissions from offshore drilling and exploration that is not conducted on production platforms. [98.230(a)(1)] The industry segment consists of both platforms that are under the jurisdiction of the U. S. Department of Interior, Bureau of Ocean Energy Management (BOEM) and the Bureau of Safety and Environmental Enforcement (BSEE), and those that are not. NOTE: BOEM and BSEE replaced the Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE) in October 2011.

INSTRUCTIONS: Offshore production facilities that report to BOEM's emissions inventory must calculate and report annual emissions in one of two ways: - Report the same annual emissions as calculated using the most recent monitoring and calculation methods published by BOEM referenced in 30 CFR 550.302 through 304 (formerly 30 CFR 250.302 through 304). [98.233(s)(1)(i)]; or - If BOEM's emissions reporting system is not available or if the facility does not have the data needed to use BOEM's emissions reporting system, adjust emissions from the facility's most recent emissions calculated in accordance with paragraph (s)(1)(i), (s)(3), or (s)(4) of this section, as applicable, by using a ratio of the operating time for the facility in the current reporting year relative to the operating time for that reporting year. [98.233(s)(1)(ii)] Offshore production facilities that do not report to BOEM's emissions inventory must calculate and report annual emissions in one of two ways: - Use the most recent monitoring methods and calculation methodologies published by BOEM referenced in 30 CFR 550.302 through 304 to calculate and report annual emissions. [98.233(s)(2)(i)]; or - If the facility does not have the data needed to use BOEM's calculation methods, adjust emissions from the facility's most recent emissions calculated in accordance with paragraph (s)(2)(i), (s)(3), or (s)(4) of this section, as applicable, by using a ratio of the operating time for the facility in the current reporting year relative to the operating time for that reporting year. [98.233(s)(2)(ii)] Offshore facilities that are required to report to BOEM's emissions inventory are those operating in the western Gulf of Mexico Outer Continental Shelf (i.e., west of 87° 30’ West longitude) as well as those operating in the North Slope Borough of Alaska. Offshore facilities that are not required to report to BOEM's emissions inventory include all other offshore platforms, such as those located in State waters or areas outside of the Gulf of Mexico and Alaska's North Slope Borough.

Combustion-related emissions (excluding flares) at offshore production facilities are to be reported under Subpart C:

https://wwws.ccdsupport.com/confluence/pages/viewpage.action?pageId=107446309

External Links:

Bureau of Ocean Energy Management (BOEM)

https://www.boem.gov/

Bureau of Safety and Environmental Enforcement (BSEE)

https://www.bsee.gov/

Outer Continental Shelf (OCS) Emissions Inventories

https://www.boem.gov/environment/environmental-studies/ocs-emissions-inventories

Calculation Spreadsheets

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Offshore Petroleum and Natural Gas Production Information Sheet

https://www.epa.gov/ghgreporting/subpart-w-offshore-information-sheet

Guidance for Subpart W reporters on Facility Address

https://www.ccdsupport.com/confluence/pages/viewpage.action?pageId=218791937

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Offshore Source Emissions [98.236(s)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Emission Source [98.236(s)]

mt CO2 [98.236(s)(1)]

mt CH4 [98.236(s)(2)]

mt N2O [98.236(s)(3)]

Amine Unit

Combustion Flares - Light Smoke - No Pilot Fuel-flaring

Combustion Flares - Light Smoke - Pilot Fuel - pilot

Combustion Flares - Light Smoke - Pilot Fuel-flaring

Combustion Flares - Medium Smoke - No Pilot Fuel - flaring

Combustion Flares - Medium Smoke - Pilot Fuel - flaring

Combustion Flares - Medium Smoke - Pilot Fuel - pilot

Combustion Flares - No Smoke - No Pilot Fuel - flaring

Combustion Flares - No Smoke - Pilot Fuel - flaring

Combustion Flares - No Smoke - Pilot Fuel - pilot

Fugitives - Compressor centrifugal dry - gas

Fugitives - Compressor centrifugal dry - NG liq

Fugitives - Compressor centrifugal dry - heavy oil

Fugitives - Compressor centrifugal dry - light oil

Fugitives - Compressor centrifugal dry - oil/water

Fugitives - Compressor centrifugal dry - oil/water/gas

Fugitives - Compressor centrifugal wet - gas

Fugitives - Compressor centrifugal wet - NG liq

Fugitives - Compressor centrifugal wet - heavy oil

Fugitives - Compressor centrifugal wet - light oil

Fugitives - Compressor centrifugal wet - oil/water

Fugitives - Compressor centrifugal wet - oil/water/gas

Fugitives - Compressor reciprocating - gas

Fugitives - Compressor reciprocating - NG liq

Fugitives - Compressor reciprocating - heavy oil

Fugitives - Compressor reciprocating - light oil

Fugitives - Compressor reciprocating - oil/water

Fugitives - Compressor reciprocating - oil/water/gas

Fugitives - Connectors - gas

Fugitives - Connectors - NG liq

Fugitives - Connectors - heavy oil

Fugitives - Connectors - light oil

Fugitives - Connectors - oil/water

Fugitives - Connectors - oil/water/gas

Fugitives - Flanges - gas

Fugitives - Flanges - NG liq

Fugitives - Flanges - heavy oil

Fugitives - Flanges - light oil

Fugitives - Flanges - oil/water

Fugitives - Flanges - oil/water/gas

Fugitives - Open-Ended Lines - gas

Fugitives - Open-Ended Lines - NG liq

Fugitives - Open-Ended Lines - heavy oil

Fugitives - Open-Ended Lines - light oil

Fugitives - Open-Ended Lines - oil/water

Fugitives - Open-Ended Lines - oil/water/gas

Fugitives - Other Equipment - gas

Fugitives - Other Equipment - NG liq

Fugitives - Other Equipment - heavy oil

Fugitives - Other Equipment - light oil

Fugitives - Other Equipment - oil/water

Fugitives - Other Equipment - oil/water/gas

Fugitives - Pumps - gas

Fugitives - Pumps - NG liq

Fugitives - Pumps - heavy oil

Fugitives - Pumps - light oil

Fugitives - Pumps - oil/water

Fugitives - Pumps - oil/water/gas

Fugitives - Valves - gas

Fugitives - Valves - NG liq

Fugitives - Valves - heavy oil

Fugitives - Valves - light oil

Fugitives - Valves - oil/water

Fugitives - Valves - oil/water/gas

Glycol Dehydrator Unit

Losses from Flashing

Mud Degassing - oil-based muds

Mud Degassing - water-based muds

Mud Degassing - synthetic-based muds

Pneumatic Pump

Pressure/Level Controllers

Storage Tank Operations - crude oil

Storage Tank Operations - condensate

Cold Vent

---

Sheet 21: (w) EOR Injection Pumps

Enhanced Oil Recovery Injection Pumps [98.236(w)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for EOR injection pump blowdown:

-Onshore petroleum and natural gas production [98.230(a)(2)]

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Emissions for EOR Injection Pump Blowdown [98.236(w)]

mt CO2

mt CH4

mt N2O

0.0

N/A

N/A

Applicability

Did the facility use CO2 EOR injection during the calendar year [98.236(w)]?

Did any EOR injection pump blowdowns occur at the facility during the calendar year [98.236(w)]?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for EOR Injection Pumps

Table W.1 EOR injection pump system characterization and emissions [Table W.1]:

CLICK HERE

For Missing data procedures [Table W.2]:

CLICK HERE

Table W.1 EOR injection pump system characterization and emissions

RETURN TO TOP

Sub-Basin ID [98.236(w)(1)]

EOR injection pump system identifier [98.236(w)(2)]

Pump capacity (barrels per day) [98.236(w)(3)]

Total volume of EOR injection pump system equipment chambers, Vv (cubic feet) [98.236(w)(4)]

Number of blowdowns per year [98.236(w)(5)]

Density of critical phase EOR injection gas, Rc (kg/ft3) [98.236(w)(6)]

Mass fraction of CO2 in critical phase EOR injection gas, GHGCO2 [98.236(w)(7)]

CO2 emissions (mt CO2) [98.236(w)(8)]

Table W.2 Missing data procedures used for EOR injection pump blowdown calculations

RETURN TO TOP

Unique name or ID number

Sub-Basin ID [98.236(w)(1)]

Parameters

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]

1

2

3

4

5

6

7

8

9

10

---

Sheet 22: (x) EOR Hydrocarbon Liquids

EOR Hydrocarbon Liquids [98.236(x)]					#N/A
Version	R.10	Back to Summary Tab				11/22/2024
Worksheet Instructions:
In accordance with 98.232, only the following industry segment must report data for EOR hydrocarbon liquids dissolved CO2:
-Onshore petroleum and natural gas production [98.230(a)(2)]
External Links:
Subpart W Resources Page	https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems
Optional Calculation Spreadsheet	https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions
Help Resources	https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems
	Total Emissions for EOR Hydrocarbon Liquids Dissolved CO2 [98.236(x)]
	mt CO2	mt CH4	mt N2O
	0.0	N/A	N/A
	Applicability
	Did the facility have hydrocarbon liquids that were produced from enhanced oil recovery operations subject to reporting under 98.232 [98.236(x)]?
	Best Available Monitoring Methods (BAMM) and Missing Data
	Were BAMM used for any parameters to calculate GHG emissions?	Provide a brief description of the BAMM used, parameter measured, and time period.	Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]
	BAMM not available for EOR Hydrocarbon Liquids
		Table X.1. EOR hydrocarbon liquids produced and emissions [Table X.1]:	CLICK HERE
		For Missing data procedures [Table X.2]:	CLICK HERE
Table X.1 EOR hydrocarbon liquids produced and emissions					RETURN TO TOP
Sub-Basin ID [98.236(x)(1)]	Volume of hydrocarbon liquid produced, Vhl (barrels per year) [98.236](x)(2)]	Average CO2 retained in hydrocarbon liquids downstream of the storage tank, Shl (mt CO2 per barrel) [98.236(x)(3)]	Annual CO2 emissions retained, MassCO2 (mt CO2) [98.236(x)(4)]
Table X.2 Missing data procedures used for EOR hydrocarbon liquids dissolved CO2 calculations							RETURN TO TOP
Sub-basin ID	Parameters	Measurement Frequency	Number of quarters missing data procedures were used [98.236(bb)(1)]	Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]	Procedures used [98.235(h)]

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Sheet 23: (z) Combustion Equipment

Combustion Equipment at Onshore Petroleum and Natural Gas Production Facilities, Onshore Petroleum and Natural Gas Gathering and Boosting Facilities, and Natural gas Distribution Facilities [98.236(z)]

#N/A

Version

R.10

Back to Summary Tab

11/22/2024

Worksheet Instructions:

In accordance with 98.232, only the following industry segment must report data for combustion emissions:

-Onshore petroleum and natural gas production [98.230(a)(2)]

-Natural gas distribution [98.230(a)(8)]

-Onshore petroleum and natural gas gathering and boosting [98.230(a)(9)]

External Links:

Subpart W Resources Page

https://www.epa.gov/ghgreporting/subpart-w-petroleum-and-natural-gas-systems

Optional Calculation Spreadsheet

https://www.ccdsupport.com/confluence/display/help/Optional+Calculation+Spreadsheet+Instructions

Help Resources

https://www.ccdsupport.com/confluence/display/help/Subpart+W+-+Petroleum+and+Natural+Gas+Systems

Total Combustion Emissions [98.236(z)]

mt CO2

mt CH4

mt N2O

0.0

0.00

0.000

Applicability

Did the facility have combustion units subject to reporting under 98.232?

Best Available Monitoring Methods (BAMM) and Missing Data

Were BAMM used for any parameters to calculate GHG emissions?

Provide a brief description of the BAMM used, parameter measured, and time period.

Were missing data procedures used for any parameters to calculate GHG emissions? [98.235]

BAMM not available for Combustion Equipment

External combustion units with a heat capacity equal to or less than 5 mmBtu/hr or Internal combustion units equal to or less than 1 mmBtu/hr [Table Z.1]:

CLICK HERE

External combustion units with a heat capacity greater than 5 mmBtu/hr or Internal combustion units greater than 1 mmBtu/hr [Table Z.2]:

CLICK HERE

Large combustion unit emissions [Table Z.3]:

CLICK HERE

For Missing data procedures [Table Z.4]:

CLICK HERE

Table Z.1 External combustion units with a heat capacity equal to or less than 5 mmBtu/hr or Internal combustion units equal to or less than 1 mmBtu/hr

Are there external fuel combustion units with a rated heat capacity less than or equal to 5 mmBtu/hr? [98.236(z)(1)(i)]

Are there internal fuel combustion units that are not compressor-drivers, with a rated heat capacity less than or equal to 1 mmBtu/hr? [98.236(z)(1)(i)]

Total number of combustion units meeting 98.236(z)(1) descriptions

Table Z.2 External combustion units with a heat capacity greater than 5 mmBtu/hr or Internal combustion units greater than 1 mmBtu/hr

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Are there external fuel combustion units with a rated heat capacity greater than 5 mmBtu/hr? [98.236(z)(2)(i)]

Are there internal fuel combustion units that are not compressor-drivers, with a rated heat capacity greater than 1 mmBtu/hr? [98.236(z)(2)(i)]

Are there Internal fuel combustion units of any heat capacity that are compressor-drivers? [98.236(z)(2)(i)]

Table Z.3 Large combustion unit emissions

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If you answered "Yes" to any part of Table Z.2, complete Table Z.3 for all applicable units.

Type of combustion unit [98.236(z)(2)(i)]

Type of fuel combusted [98.236(z)(2)(ii)]

Quantity of fuel combusted in calendar year [98.236(z)(2)(iii)]

Unit of measure [98.236(z)(2)(iii)

CO2 Emissions (mt CO2) [98.236(z)(2)(iv)]

CH4 Emissions (mt CH4) [98.236(z)(2)(v)]

N2O Emissions (mt N2O) [98.236(z)(2)(vi)]

Table Z.4 Missing data procedures used for Combustion Emission calculations

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Type of combustion unit

Type of fuel combusted

Parameters

Measurement Frequency

Number of quarters missing data procedures were used [98.236(bb)(1)]

Total number of hours in the year missing data procedure was used [98.3(c)(8)] [98.236(bb)(2)]

Procedures used [98.235(h)]