EPA Greenhouse Gas Mandatory Reporting Rule - OIPA
EPA Greenhouse Gas Mandatory Reporting Rule - OIPA
EPA Greenhouse Gas Mandatory Reporting Rule - OIPA
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<strong>EPA</strong> <strong>Greenhouse</strong> <strong>Gas</strong><br />
<strong>Mandatory</strong> <strong>Reporting</strong> <strong>Rule</strong><br />
Onshore Petroleum & Natural <strong>Gas</strong> Production
Onshore Petroleum &<br />
Natural <strong>Gas</strong> Production
Agenda<br />
1.Applicability<br />
2.Source Categories<br />
3.BAMM Time Line<br />
4.BAMM Request<br />
5.Questions<br />
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Disclaimer<br />
• Devon and its contractors make no<br />
representations or warranties regarding the<br />
accuracy or validity of any of the regulatory<br />
interpretations discussed in this presentation,<br />
and any reliance on such regulatory<br />
interpretations will be at your own risk and<br />
discretion.<br />
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Basin / Facility Map<br />
• Facility - With respect to onshore petroleum<br />
and natural gas production: “Facility” means All<br />
petroleum or natural gas equipment on a well<br />
pad or associated with a well pad under<br />
common ownership or control, including leased,<br />
rented, or contracted activities by an onshore<br />
petroleum and natural gas production owner or<br />
operator, that are located in a single<br />
hydrocarbon basin.<br />
• Basin - American Association of Petroleum Geologists<br />
(AAPG) Provinces Code Map<br />
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AAPG Basins<br />
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Asset Classification<br />
• Sub-basin Categories – Comprised of the formation type within<br />
county lines.<br />
Conventional<br />
Unconventional<br />
Formation Types<br />
>0.1 millidarci permeability<br />
≤ 0.1 millidarci permeability<br />
• Shale<br />
• Coal seam<br />
• Other tight reservoir rock<br />
On August 19 th , 2011 <strong>EPA</strong> proposed a sub-basin construct for<br />
classification of production assets within a basin. Operators will need to classify all<br />
of their assets into 1 of 4 <strong>EPA</strong> proposed sub-basins.<br />
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Production Type<br />
Production Type – Based on production zones.<br />
OIL WELL<br />
A well completed for the<br />
production of crude oil from at<br />
least 1 oil zone or reservoir<br />
Light crude (≥ 20° API)<br />
Heavy crude (< 20° API)<br />
GAS WELL<br />
Any well that is<br />
not completed<br />
in an oil zone<br />
or reservoir<br />
(undefined in<br />
subparts A or W)<br />
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Applicability Tool<br />
• <strong>EPA</strong> Applicability Tool<br />
• Industry groups and operators have tested the <strong>EPA</strong> tool and<br />
determined that it provides wildly inaccurate results and is not<br />
based on subpart W methodologies<br />
• Example: Onshore production centrifugal compressor venting<br />
• <strong>EPA</strong> Applicability Tool: 2,140 MT CO 2e /yr<br />
• Subpart W Calculation: 4,892 MT CO 2e /yr<br />
• Error of 56%<br />
• Operator Applicability Tools<br />
• Many operators and contractors have developed their own<br />
applicability tools to determine applicability for their assets.<br />
• Devon has assisted the <strong>OIPA</strong> in the development of an applicability<br />
tool for its membership.<br />
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Applicability Tool<br />
General Instructions<br />
• Color scheme:<br />
– Green cells are required. User must enter values for applicable source types.<br />
– Blue cells are optional. Default values are used for these cells if no user data are<br />
entered. Operator should enter operator-specific data where available.<br />
– Red cells display emission estimation results and cannot be altered.<br />
• The tool is intended to be used for the onshore production industry segment<br />
only.<br />
• Emission estimation methods are provided for the following source types:<br />
– Onshore production storage tanks<br />
– Combustion emissions from natural gas-fired internal combustion engines<br />
– Acid gas removal (AGR) vents<br />
– Compressor vents<br />
– Dehydrator vents<br />
– Equipment leaks<br />
– Pneumatic device vents<br />
– Pneumatic pump vents<br />
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Applicability Tool<br />
General Instructions (cont’d)<br />
• Not all potential subpart W source types are included in this tool. Source<br />
types that are not covered by this tool include, but are not necessarily limited<br />
to, the following:<br />
– Well event emissions:<br />
• Well venting for liquids unloading<br />
• Venting/flaring during completions and workovers w/ & w/o hydraulic fracturing<br />
• Well testing venting/flaring<br />
• Associated gas venting/flaring<br />
– Flare stack emissions<br />
– Combustion emissions from non-gas fired equipment (e.g., diesel-fired generators)<br />
– Combustion emissions from large (> 5 MMBtu/hr) external combustion devices<br />
– Enhanced oil recovery (EOR) operations (EOR injection pump blowdowns &<br />
hydrocarbon liquids dissolved CO 2 )<br />
• If an operator has any of the omitted source types, actual emissions may be<br />
significantly greater than those estimated by this tool.<br />
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Applicability Tool<br />
<strong>Gas</strong> Composition<br />
• Enter produced gas CH 4 and CO 2 concentrations representative of your<br />
operations<br />
• These compositions are used in several of the source type calculations<br />
throughout the tool<br />
• Default values of 85% for CH 4 and 5% for CO 2 should be modified based<br />
on operator-specific data<br />
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Applicability Tool<br />
Onshore Production Tanks<br />
• Estimations based on results of E&P TANK runs for 8<br />
geographical database cases from the Southwestern U.S.<br />
• Select the case that is most representative of your<br />
operations<br />
• Enter total, basin-wide hydrocarbon liquids (oil/condensate)<br />
production from all wells<br />
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Applicability Tool<br />
Combustion Sources<br />
• Estimates emissions from natural gas-fired internal combustion<br />
engines<br />
• Calculations based on modified engine type, size, and fuel<br />
consumption data for production engines<br />
– Data source:<br />
• Burklin, C., Heaney, M. (2006, October 5). Natural <strong>Gas</strong> Compressor<br />
Engine Survey for <strong>Gas</strong> Production and Processing Facilities. Retrieved<br />
from<br />
http://www.utexas.edu/research/ceer/GHG/files/ConfCallSupp/H06<br />
8FinalReport.pdf<br />
– See applicability tool information tab for detailed information<br />
about data sources and assumptions<br />
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Applicability Tool<br />
Combustion Sources (cont’d)<br />
• Enter total basin-wide number of engines by type (rich burn/lean<br />
burn) within each size range<br />
• Estimations use “typical size” and fuel consumption ratings of<br />
representative models within each type/size range combination<br />
• See applicability tool information for data source and assumption<br />
details<br />
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Applicability Tool<br />
Acid <strong>Gas</strong> Removal Venting<br />
• Estimations based on subpart W §98.233(d)(3) Calculation Methodology 3<br />
• Enter total basin-wide sour gas (inlet stream) volume for all AGR units<br />
(required)<br />
• Enter sour gas (inlet stream) CO 2<br />
concentration (optional)<br />
– If no sour gas concentration is entered, CO 2<br />
concentration for produced<br />
gas from composition tab is used by default<br />
• Enter sweet gas (outlet stream) CO 2<br />
concentration (optional)<br />
– If no sweet gas concentration is entered, zero is used by default<br />
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Applicability Tool<br />
Compressor and Dehydrator Venting<br />
• Dehydrator venting estimations based on subpart W §98.233(e)(2)<br />
Calculation Methodology 2 for glycol dehydrators with annual throughput<br />
less than 0.4 MMscf/day (146 MMscf/yr)<br />
– If you operate any production dehys with ≥ 0.4 MMscf/day throughputs, consider<br />
using a GLYCalc run in lieu of Applicability Tool to estimate CO 2 and CH 4 for<br />
emissions from these units<br />
• Compressor venting calculations based on only available subpart W<br />
methodology for onshore production<br />
• Enter total basin-wide counts of dehydrators, reciprocating compressors,<br />
and centrifugal compressors<br />
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Applicability Tool<br />
Equipment Leaks<br />
• Estimation based on subpart W §98.233(r)(2)(i) Calculation Methodology 3, which<br />
uses major equipment counts and composition from <strong>Gas</strong> Composition tab<br />
– Light Crude emission factors used for oil production equipment leak estimates<br />
• Enter total basin-wide counts of gas wells and oil wells<br />
• Enter total basin-wide counts of major equipment by equipment type<br />
– Separators and line heaters for gas production sites<br />
– Separators, heater-treaters, and headers for oil production sites<br />
• Dehydrator and compressor counts are taken from Compressor and Dehydrator<br />
Venting section of the tool<br />
– Compressor and Dehydrator Venting section must be completed first<br />
– Dehys and compressors assumed to be in gas production service<br />
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Applicability Tool<br />
Pneumatic Devices & NG-Driven Pneumatic Pumps<br />
• Estimations based on subpart W §98.233(a) & (b)<br />
• Subpart W multipliers and emission factors used along with composition<br />
from <strong>Gas</strong> Composition tab<br />
• Enter total basin-wide counts of pneumatic devices by type<br />
– High bleed (continuous)<br />
– Low bleed (continuous)<br />
– Intermittent bleed<br />
• Enter total basin-wide count of natural gas-driven pneumatic pumps<br />
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Applicability Tool Demonstration<br />
Please provide your information!<br />
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Onshore Production Source<br />
Categories<br />
1. (a) Natural <strong>Gas</strong> Pneumatic<br />
Device Venting<br />
2. (c) Natural <strong>Gas</strong>-Driven<br />
Pneumatic Pump Venting<br />
3. (d) Acid <strong>Gas</strong> Removal Vents<br />
4. (e) Dehydrator Vents<br />
5. (f) Well Venting for Liquids<br />
Unloading<br />
6. (g) <strong>Gas</strong> Well Venting During<br />
Completions & Workovers With<br />
Hydraulic Fracturing<br />
7. (h) Venting During Completions<br />
& Workovers Without Hydraulic<br />
Fracturing<br />
8. (j) Onshore Production Storage<br />
Tanks<br />
9. (l) Well Testing, Venting &<br />
Flaring<br />
10.(m) Associated <strong>Gas</strong> Venting &<br />
Flaring<br />
11.(n) Flare Stack Emissions<br />
12.(o) Centrifugal Compressor<br />
Venting<br />
13.(p) Reciprocating Compressor<br />
Venting<br />
14.(r) Population Count & Emission<br />
Factors<br />
15.(x) EOR Hydrocarbon Liquids<br />
Dissolved CO 2<br />
16.(z) Onshore Petroleum & Natural<br />
<strong>Gas</strong> Production & Natural <strong>Gas</strong><br />
Distribution Combustion<br />
Emissions<br />
17.(w) EOR Injection Pump<br />
Blowdown<br />
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Regulation Disclaimer<br />
• As operators, engineers and industry experts we<br />
understand that the rule is often unclear and<br />
contains errors and inconsistencies.<br />
• Many industry groups (including <strong>OIPA</strong>) and<br />
operators are working with the <strong>EPA</strong> to address<br />
issues within the rule.<br />
• However, the fact of the matter is that the rule is<br />
final and a reporting deadline has been set.<br />
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98.233(a): Natural <strong>Gas</strong> Pneumatic<br />
Device Venting<br />
Source Category Points of Interest:<br />
*Device Definitions in Subpart A<br />
High<br />
Low<br />
Intermittent<br />
Device Classification<br />
> 6scf/hr<br />
≤ 6scf/hr<br />
Snap-acting / Throttling<br />
•T = Operating hours of each device type (Cumulative)<br />
•GHG i = Sub-basin representative gas analysis<br />
•Operators must complete an actual count by the third calendar year of<br />
reporting (2013).<br />
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98.233(c): Natural <strong>Gas</strong>-Driven<br />
Pneumatic Pump Venting<br />
• Source Category Points of Interest:<br />
• Count – Operators must have an actual count for the first year of<br />
reporting.<br />
• T – Operating hours of each pump (Cumulative)<br />
• GHG i - Sub-basin representative gas analysis<br />
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98.233(d): Acid <strong>Gas</strong><br />
Removal Vents<br />
• Source Category Points of Interest:<br />
• Methodology 1: CEMS<br />
• Methodology 2: Vent Meter<br />
• Methodology 3: Volumetric CO 2 Emission Calculation<br />
Vol I – Inlet CO 2 content (Requires Quarterly Analysis [FAQ – Avg ])<br />
Vol O - Outlet CO 2 content (Requires Quarterly Analysis [FAQ – Avg ]) OR<br />
(Sales Line Spec)<br />
• Methodology 4: Standard Simulation Software (AspenTech HYSYS®, API<br />
4679 AMINECalc)<br />
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98.233(e): Dehydrator Vents<br />
• Source Category Points of Interest:<br />
• Glycol Dehydrator Classification:<br />
Throughput threshold 0.4 mmscf/day<br />
0.4 mmscf/day Methodology 1<br />
0.4 mmscf/day < Methodology 2<br />
• Methodology 1: Standard Simulation Software<br />
(AspenTech HYSYS®, API 4679 AMINECalc)<br />
• Methodology 2: Volumetric GHG Emission Calculation<br />
Requires contractors to conduct an asset inventory (Count)<br />
• Desiccant Dehydrators – Refilling Process Emissions<br />
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98.233(f): Well Venting for<br />
Liquids Unloading<br />
• Source Category Points of Interest:<br />
Well Classification: Two (2) categories:<br />
Wells without plunger lift<br />
Wells with plunger lift<br />
• Methodology 1: Representative Measurement Data (FR in cf/hr)<br />
• Requires operators to install a flow meter to measure the flow rate.<br />
• Operators will have to further classify their wells into:<br />
• Tubing diameter groups & Pressure groupings per sub-basin<br />
• <strong>EPA</strong> has proposed 5 pressure groupings<br />
• Methodology 2 & 3: Individual Well Venting Events<br />
We anticipate most industry operators to use methodologies 2 & 3.<br />
Methodology 2 applies to wells without plunger lift assist<br />
Methodology 3 applies to wells with plunger lift assist<br />
• Operators will need to track the time duration of each venting event regardless of<br />
the methodology they elect to use.<br />
• The majority of data points needed for methodologies 2 & 3 are well characteristics<br />
(static data points that will not change)<br />
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98.233(g): <strong>Gas</strong> Well Venting During Completions &<br />
Workovers With Hydraulic Fracturing<br />
• Source Category Points of Interest:<br />
• “With/Without Fracture” refers to the fracturing process, not the status<br />
of a well as fractured or unfractured.<br />
• Operators must specify which processes they are performing on a well<br />
(Completion or Workover)<br />
• Operators must specify the well type (horizontal or vertical) to further<br />
classify wells.<br />
• Two (2) Methodologies for operators to choose from:<br />
• Both methodologies calculate representative flow rates (FR) to apply to all<br />
horizontal/vertical, completion/workover combinations in a gas producing sub-basin.<br />
• Operators will need to track the number of events (completion or workover) and the time<br />
duration of each event.<br />
• Operators also need to track whether the emissions are routed to atmosphere (venting) or<br />
flare.<br />
• Methodology 1 uses a flow meter. Methodology 2 is a flow rate calculation.<br />
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98.233(h): Venting During Completions &<br />
Workovers Without Hydraulic Fracturing<br />
• Source Category Points of Interest:<br />
• “With/Without Fracture” refers to the fracturing process, not the<br />
status of a well as fractured or unfractured.<br />
• Operators must determine which processes they are performing on a<br />
well (Completion or Workover)<br />
– Operators and Industry groups are working with the <strong>EPA</strong> to define what processes<br />
are considered workovers and completions.<br />
– Operators will need to track the number of events (completions or workovers) and<br />
the time duration for each event.<br />
– Operators also need to track whether the emissions are routed to atmosphere<br />
(venting) or flare.<br />
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98.233(j): Onshore Production<br />
Storage Tanks<br />
• Source Category Points of Interest:<br />
• Regulation allows for the use of engineering estimates (Default Values)<br />
• Oil – All hydrocarbon liquids (not including produced water)<br />
• Methodologies 1 – 4 apply to wells with production ≥ 10 bbl/day<br />
***The process flow of the production and orientation of the equipment is required<br />
to choose the proper methodology.<br />
• Methodologies 1-3 apply to wells with colocated separators or tanks.<br />
• Methodology 4 applies to wells that are not colocated with separators or<br />
tanks.<br />
• Methodology 5 applies to wells with production < 10 bbl/day<br />
***Operators will still have to conduct an inventory to track all oil/condensate<br />
production tanks.<br />
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98.233(l) Well Testing, Venting &<br />
Flaring<br />
• Source Category Points of Interest:<br />
• Many operators don’t plan to report well testing emissions under<br />
source category (l). They plan to report emissions from well testing,<br />
venting & flaring under source categories (g) or (h).<br />
• It is interpreted that these emissions are part of a completion or<br />
workover process.<br />
• According to operators, any other well testing will be done through<br />
test separators and will not create an emission event.<br />
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98.233(m): Associated <strong>Gas</strong><br />
Venting & Flaring<br />
• Source Category Points of Interest:<br />
• Industry members have identified this source category to apply to<br />
stranded wells only.<br />
• Stranded well = a well not connected to pipeline infrastructure<br />
• Industry has interpreted this to not include venting or flaring for<br />
emergency, maintenance or service interruptions.<br />
• <strong>EPA</strong> has not indicated that this source category does not include<br />
service interruption or emergency events. <br />
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98.233(n): Flare Stack Emissions<br />
Source Category Points of Interest:<br />
• Industry has interpreted the <strong>EPA</strong>’s intent for source category (n) to<br />
capture all other flaring emissions not accounted for in other<br />
source categories.<br />
• <strong>EPA</strong> has requested feedback from industry on this source category.<br />
• Regulation allows for the use of engineering estimates based on<br />
best available data or company records to determine unmeasured<br />
flow volumes.<br />
• If CEMs and continuous flow measurement devices are available on<br />
the flare, they must be used.<br />
• Instrumentation will need to calibrated per the requirements in 98.234 (b)<br />
• If flow measurement and CEMS not available we operators are allowed to use<br />
engineering estimates based on best available data<br />
• Use manfacturer’s data for flare efficiency.<br />
• If not available, default is 98%<br />
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98.233(o): Centrifugal<br />
Compressor Venting<br />
• Source Category Points of Interest:<br />
• Requires operators to have a total count of centrifugal<br />
compressors in operation each reporting year.<br />
• Industry has interpreted this to be the number of compressors<br />
operating on Dec. 31 of the reporting year.<br />
• Operators will need to conduct an inventory annually or track<br />
changes throughout the year.<br />
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98.233(p): Reciprocating<br />
Compressor Venting<br />
• Source Category Points of Interest:<br />
• Requires operators to have a total count of reciprocating<br />
compressors in operation each reporting year.<br />
• Industry has interpreted this to be the number of compressors<br />
operating on Dec. 31 of the reporting year.<br />
• Operators will need to conduct an inventory annually or track<br />
changes throughout the year.<br />
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98.233(r): Population Count<br />
and Emission Factors<br />
• Source Category Points of Interest:<br />
• Asset Classification:<br />
• Oklahoma is classified in the Western U.S.<br />
• Assets classified into service (Light/Heavy Crude or <strong>Gas</strong>)<br />
• Major equipment or actual component counts<br />
• Operators have two (2) methodologies to choose from.<br />
• Methodology 1 – Count major equipment and use <strong>EPA</strong> component counts and<br />
emission factors.<br />
• <strong>EPA</strong> has designated that each well pad will have 1 meters/piping<br />
• Methodology 2 – Count each component individually and use <strong>EPA</strong> emission factors.<br />
• Tubing systems ≤ ½ inch diameter are exempt from (r)<br />
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98.233(w): EOR Injection Pump<br />
Blowdown<br />
• Source Category Points of Interest:<br />
• <strong>EPA</strong> has indicated that pump implies a liquid. CO2 is a gas up to<br />
1,300 psi. <strong>EPA</strong> has indicated source category (w) does not apply to<br />
compressors moving CO2 gas.<br />
• Industry has identified this as an isolated process, and most operators<br />
are addressing these events with the operators that manage these<br />
operations.<br />
• Data point collection:<br />
– Calculate volume of pump (engineering or manufacturer information)<br />
– Track the number of blowdowns in the reporting year.<br />
– Remaining data points reference gas quality<br />
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98.233(x): EOR Hydrocarbon<br />
Liquids Dissolved CO2<br />
• Source Category Points of Interest:<br />
• Industry has identified this as an isolated process, and most operators<br />
are addressing these events with the operators that manage these<br />
operations.<br />
• Data point collection:<br />
– Run analysis on hydrocarbon liquids to determine CO2 concentration.<br />
– Annual samples must be pulled at STP downstream of the atmospheric tanks<br />
(post flashing)<br />
– Total annual hydrocarbon liquid produced from EOR operations<br />
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98.233(z): Onshore Petroleum & Natural<br />
<strong>Gas</strong> Distribution Combustion Emissions<br />
• Source Category Points of Interest:<br />
• Applicability<br />
• External Combustion Sources - < 5 mmbtu are exempt<br />
– (report a count)<br />
• Internal Combustion Engines – Two (2) categories<br />
• Stationary Internal Combustion Engines<br />
• Portable Internal Combustion Engines<br />
• Classification<br />
• Equipment Type<br />
• Fuel Type<br />
• Volume of Fuel Consumed<br />
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Best Available Monitoring<br />
Methods (BAMM)<br />
• BAMM - 2011<br />
• Determine Applicability<br />
• BAMM - Jan. 1 – Dec. 31, 2011 (proposed)<br />
• Data plan for 2011<br />
• Event data<br />
• Asset Inventory<br />
• Asset Characteristic data<br />
• 40 CFR Part 98, Subpart W 98.234 (f)(5)(iv) (proposed)<br />
• Operators can use BAMM for sources not listed in paragraph<br />
(f)(2), (f)(3), and (f)(4).<br />
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BAMM Timeline (Proposed)<br />
• 40 CFR Part 98, Subpart W 98.234 (f)(8)<br />
• Electronic Notice of Intent (e-NOI)<br />
• e-NOIs submitted to the MRRpetition @ epa.gov<br />
• e-NOIs must be submitted by Dec. 31, 2011<br />
• e-NOIs must be submitted in order to submit a extension request<br />
• BAMM Extension Request<br />
• Extension requests can be submitted electronically or by mail<br />
• Extension requests must be submitted by March 30, 2012<br />
• Extension Requests must contain the information required in<br />
98.234 (f)(8)(ii)<br />
• Facilities that submit both an e-NOI and an Extension<br />
Request will automatically use BAMM through June 30,2012<br />
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BAMM e-NOI<br />
• Content of e-NOI<br />
• Identify all facilities for which BAMM is needed.<br />
• Types of emission sources (source categories)<br />
• BAMM provision the source falls under.<br />
• 98.234 (f)(2), (f)(3), (f)(4) or (f)(5)<br />
• <strong>EPA</strong> has indicated that a single e-NOI for a company is<br />
acceptable as long as it identifies all individual facilities<br />
by name.<br />
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BAMM Extension Request<br />
• Content of Extension Request<br />
• A list of source categories containing data parameters<br />
that BAMM is needed for.<br />
• A description of the unique or unusual circumstances<br />
specific to each source.<br />
• A detailed explanation and supporting documentation<br />
of when the operator will comply with reporting<br />
requirements.<br />
• Industry Position<br />
NYSE: DVN www.devonenergy.com page 43
Date/Deadline Summary<br />
• 2011 <strong>Reporting</strong> deadline<br />
• Sept. 27, 2012 (proposed)<br />
• GHG Program (Auto BAMM expiration date)<br />
• Jan. 1, 2012<br />
• Operators that determine applicability for Subpart W, will need to have<br />
systems and programs in place to track operations and events.<br />
• BAMM deadlines<br />
• Auto BAMM for Jan 1 – Dec. 31, 2011<br />
• e-NOI due Dec. 31<br />
• BAMM Extension Request due March 30, 2012<br />
• Auto BAMM granted for Jan. 1 – June 30,2012<br />
• Operators will need to collect data for any data point not included in<br />
their BAMM Extension Request on January 1, 2012.<br />
NYSE: DVN www.devonenergy.com page 44
Questions<br />
Any Questions<br />
NYSE: DVN www.devonenergy.com page 45
Thank You.