MEMORANDUM

TO: Project Record

FROM: EPA

DATE: April 2, 2013

SUBJECT: Summary of Confidential Business Information Claims in Industry 

Responses to EPA’s CBM Screeners and Detailed Questionnaires

EPA used two information collection tools for the Coalbed Methane (CBM) Extraction 

Industry: 

1. 2008 Coalbed Methane Industry Screener (“Screener”)

1

, which EPA distributed to the 

entire industry; and 

2. Questionnaire for the Coalbed Methane Extraction Sector (“Detailed Questionnaire”)2,

which EPA distributed to a subset of the industry. 

EPA provided respondents with the Screener as a Microsoft® Excel spreadsheet and the 

Detailed Questionnaire as a Microsoft® Word form. Operators submitting information to EPA 

may assert a business confidentiality claim covering the information. This is referred to as 

confidential business information (CBI). Operators may not claim effluent data or information 

that is otherwise publicly available information CBI.

This memorandum summarizes the confidential business information (CBI) claims that 

operators made for information reported in response to the Screener and Detailed Questionnaire 

and discusses EPA’s rationale for developing publicly available versions of the CBM databases 

developed with information reported in response to the Screener and Detailed Questionnaire. 

EPA did not include the individual responses (electronic or hardcopy) from the Screener or 

Detailed Questionnaire in the docket. Instead, EPA entered the collected information into four 

CBM databases to conduct analyses on the industry. EPA included these databases in the docket, 

as detailed in Table 1. 

 

1A blank copy of the Screener is located in the EPA docket (EPA-HQ-OW-2006-0771, DCN10067).

2 A blank copy of the Detailed Questionnaire is located in the EPA docket (EPA-HQ-OW-2006-0771, DCN10072).
Memorandum

April 2, 2013

Page 2

Table 1. Summary of CBM Databases Included in the EPA Docket 

(EPA-HQ-OW-2010-0824)

CBM Database Name Description Source of 

information

Non-CBI 

Docket

CBI Docket

Screener Database Responses to the Screener, 

including operating status, 

business size, gas 

production, CBM project 

size, and discharge 

practices.

2008 

Screener

Not Applicable 

DCN: 

CBM00681

Financial and Economic 

Detailed Questionnaire 

Database (Econ Database)

Responses from Part B of 

the Detailed Questionnaire, 

including firm-level and 

project-level financial data.

2008 

Detailed 

Questionnaire

Not Applicable 

DCN: 

CBM00654

Engineering Detailed 

Questionnaire Database 

(Engineering Database)

Responses from Part A and 

Part C of the Detailed 

Questionnaire, including 

project and water 

management system 

information on operations 

and costs.

2008 

Detailed

Questionnaire

Not Applicable 

DCN: 

CBM00656

Effluent Pollutant Database

Detailed Questionnaire 

Pollutant Database

Data collected from state 

permitting programs in 

Alabama, Montana, and 

Wyoming and pollutant 

data submitted in Part C of 

the Detailed Questionnaire 

by operators who 

discharged all or a portion 

of CBM produced water to 

surface water. Operators 

who submitted data 

provided well, pre- and 

post-treatment, and 

discharge data, or a 

combination thereof.

2008 

Detailed 

Questionnaire 

(for operators 

with direct 

discharging 

permits) and 

State DMR 

data 



DCN: 

CBM00689

(effluent data 

only)



DCN: 

CBM00668

1.0 SUMMARY OF INFORMATION COLLECTED IN THE SCREENER AND CBI CLAIMS FOR 

SCREENER RESPONSES 

EPA identified the primary unit of analysis for the CBM industry as a “project,” defined 

as a well, group of wells, lease, group of leases, or recognized unit that is operated as an 

economic unit when making production decisions. The Screener required operators to group their 

CBM wells into projects. Table A-1 in Attachment 1 lists the 251 operators that received 

Screeners. The screener requested the following information from each operator:

 Small business status;

 Verification that the operator produced CBM in 2008; and

 Number of projects operated.
Memorandum

April 2, 2013

Page 3

For each project, the screener requested the following information for calendar year 

2008:

 Numbers of wells;

 Gas production; and 

 Produced water management methods.

EPA did not provide respondents a means to claim their responses to individual questions 

in the Screener as CBI; however, EPA instructed operators to identify responses they considered 

CBI in the Remarks section of the Screener. In the responses to the Screener, some operators 

remarked that all information in the Screener was CBI, while others claimed certain responses

were CBI. 

EPA developed a database that contains responses to the Screener for each CBM operator 

(and their respective projects) (Screener Database). EPA created CBI fields in the database for 

each question in the Screener and updated the fields with the CBI indications from the Remarks 

section of the Screener. EPA used this database to determine the sample of CBM operators and 

projects to select for the Detailed Questionnaire. 

EPA reviewed the Screener response CBI claims to determine whether this database can 

be included in the publicly-available portion of the EPA Docket (EPA-HQ-OW-2010-0824).

EPA reviewed the number of operators with CBI claims for the Screener (as summarized in 

Table 2). Six percent of operators reported any information in the Screener CBI and only three

percent of the operators claimed all their information in the Screener CBI.

Table 2. CBI Summary of Screener Responses

Total number of operators 251

Operators claiming any

information CBI 15

Operators claiming all information 

CBI 8

% any information CBI 6%

% all information CBI 3%

2.0 SUMMARY OF INFORMATION COLLECTED IN THE DETAILED QUESTIONNAIRE AND CBI

CLAIMS ON THE RESPONSES TO THE DETAILED QUESTIONNAIRE

EPA used the information collected from the CBM industry in the Screener to select a 

sample of operators and projects required to complete the Detailed Questionnaire. Table A-2 in 

Attachment 1 lists the 105 operators to which EPA sent Detailed Questionnaires and identifies 

operators that responded.
Memorandum

April 2, 2013

Page 4

The Detailed Questionnaire requested project-level financial data (Part B of the Detailed 

Questionnaire) and technical data (Parts A and C of the Detailed Questionnaire) for calendar year 

2008 including the following: 

 General information on the operator and parent company;

 Produced water volumes, water quality, and treatment, reuse, and disposal 

methods;

 Destination of CBM produced water;

 Produced water treatment methods, including system design, operating, and cost 

information;

 Pollutant monitoring data;

 Firm-level financial information including information from calendar years 2006 

and 2007; 

 Historic project information on development for a subset of recently constructed 

projects; and

 Project-level financial information including projections of future cost and 

production data.

EPA included question-specific CBI indicators in the Detailed Questionnaire.

Respondents also had the option to mark a box labeled “Check here to claim all eligible data are 

CBI” (“allCBI”). If a respondent marked the allCBI claim, EPA considered all questions in the 

Detailed Questionnaire as CBI.

EPA developed three databases that contain responses to the Detailed Questionnaire: 

 Financial and Economic Detailed Questionnaire Database (Economic Database)

 Engineering Detailed Questionnaire Database (Engineering Database)

 Detailed Questionnaire Pollutant Database (Pollutant Database)

EPA included CBI indications for each question in Part B in the Economic Database and 

for each question in Parts A and C in the Engineering database. EPA also included the allCBI 

indication in both the Economic and Engineering databases. The Pollutant database contains a 

CBI indicator for each project that submitted data. Where respondents marked the allCBI box, 

EPA updated all the question-specific CBI fields in the Economic and Engineering databases and 

the project-specific CBI field in the Pollutant database to indicate CBI.

EPA reviewed the CBI claims to determine whether databases developed with data 

provided in response to the Detailed Questionnaire can be included in the publicly available

portion of the EPA Docket (EPA-HQ-OW-2010-0824).

All CBI Claims

Because respondents may have provided responses to Parts A, B, and/or C of the Detailed 

Questionnaire, the databases may differ in the operators and projects included in them. For 

example, a respondent may have provided only financial data in Part B of the Detailed 

Questionnaire but did not provide responses in the technical portion (Parts A and C). In this case, 
Memorandum

April 2, 2013

Page 5

the information from the respondent may be included in the Economic database but not in the 

Engineering database. 

EPA reviewed the number of survey respondents with allCBI claims in the Detailed 

Questionnaire (as summarized in Table 3). At least 69 percent of the respondents claimed the 

entire survey CBI.

Table 3. Summary of Surveys with allCBI Responses to 

the Detailed Questionnaire

Engineering Database

Total Surveys 85

allCBI Surveys 60

% Surveys with allCBI 71

Economic Database

Total Surveys 87

allCBI Surveys 60

% Surveys with allCBI 69

EPA used the Detailed Questionnaire databases to analyze several subsets of responses. 

EPA grouped responses by basin, by business size, by project, by treatment method, and by 

discharge destination to complete analyses of the CBM industry. Table 4 provides a breakdown 

of the allCBI claims by basin.

Table 4 also presents a breakdown of allCBI claims specific to operators operating any

discharging projects and a breakdown of allCBI claims specific to small businesses. These 

examples show that the level of CBI can change when smaller subsets of data are used. EPA 

must evaluate CBI claims based on the level of analysis that EPA performs. 

Table 4. Basin Summary of Operators with allCBI Responses to the Detailed 

Questionnairea

Basin

All Surveys Surveys from Discharging Operators

Total

Surveys

Number of 

Surveys with 

allCBI 

Claimb

Percent of 

Surveys 

Claiming CBI

Total 

Surveys

Number of 

Surveys with 

allCBI Claimb

Percent of 

Surveys 

Claiming CBI 

Appalachian 12 7 58% 3 3 100%

Arkla 2 1 50% 0 0 -

Black 

Warrior

8 6 75% 7 5 71%

Cahaba 2 2 100% 2 2 100%

Illinois 1 1 100% 2 2 100%

Permian/Ft. 

Worth

1 1 100% 0 0 -

Eastern US 26 18 69% 14 12 93%
Memorandum

April 2, 2013

Page 6

Table 4. Basin Summary of Operators with allCBI Responses to the Detailed 

Questionnairea

Basin

All Surveys Surveys from Discharging Operators

Total

Surveys

Number of 

Surveys with 

allCBI 

Claimb

Percent of 

Surveys 

Claiming CBI

Total 

Surveys

Number of 

Surveys with 

allCBI Claimb

Percent of 

Surveys 

Claiming CBI 

Green River 5 4 80% 1 1 100%

Powder 

River (MT)

3 2 67% 1 1 100%

Powder 

River (WY)

34 21 62% 19 12 63%

Raton 4 3 75% 2 2 100%

Wind River 1 1 100% 0 0 -

San Juan 12 9 75% 0 0 -

UintaPiceance9 8 89% 0 0 -

Western US 68 48 71% 23 16 91%

Total 94c66 70% 37 28 76%

a The counts and percentages in this table represent the CBI claims from respondents of the Detailed Questionnaire.

bOperators may also have claimed individual questions CBI. This represents the minimum number of CBI claims for 

the basin.

c Note that several surveys had CBM operators that operated in more than one basin. Therefore, an allCBI response 

in a survey may be counted in more than one basin. 

Any CBI Claims

The Detailed Questionnaire also allowed operators who did not make an allCBI claim to 

indicate if responses to individual questions contained CBI. Every survey received by EPA had 

at least one CBI response, as summarized in Table 5.

Table 5. Summary of Surveys with Any CBI Responses to 

the Detailed Questionnaire

Total Surveys 87

Number of Surveys with Any CBI 87

% Surveys with Any CBI 100%

Select CBI Claims

EPA reviewed the CBI claims for several questions from the Detailed Questionnaire that 

EPA used in its analyses. The question responses can be generally grouped into the following 

categories. 

 Firm-level financial (Questions in Part B Sections 1 and 2);

 Project-level financial (Questions in Part B Section 3);

 Production and produced water management system (PWMS) operations 

(Questions C2-3 and C2-4);

 PWMS costs (Questions C2-5 through C2-8);
Memorandum

April 2, 2013

Page 7

 Discharge practices (Questions C3-2 through C3-6);

 Treatment design and costs (Questions C3-9 through C3-13); and

 Pollutant data (Question C4-1).

Table 6 summarizes the CBI claims for all reported data elements in each category of responses.

This table includes operators who checked the allCBI claim or any of the individual questions in 

the section CBI. As shown in the table, the majority of the data were claimed CBI.

Table 6. Summary of CBI Responses to the Detailed 

Questionnaire – Select Question Categoriesa

Firm-level financial

Total Responses 14,706

CBI Responses 10,760

% CBI 73%

Project-level financial

Total Responses 2,175

CBI Responses 1,562

% CBI 72%

Production and PWMS operations

Total Responses 462

CBI Responses 324

% CBI 70%

PWMS costs

Total Responses 693

CBI Responses 536

% CBI 77%

Discharge Practices

Total Responses 833

CBI Responses 611

% CBI 73%

Treatment design and costs

Total Responses 131

CBI Responses 119

% CBI 91%

Pollutant Data

Total Responses 184

CBI Responses 140

% CBI 77%

a Total count of CBI claims is calculated as the number of projects 

responding to the category of questions times the number of responses for the 

project times the number of questions in the category. 
Memorandum

April 2, 2013

Page 8

3.0 CONSIDERATIONS FOR CBI-DEDUCIBLE INFORMATION

CBI-deducible information is that which could be combined with non-CBI information 

and/or aggregated CBI and non-CBI data to determine (or back calculate) CBI information.

Where an aggregated output includes totals summed from both CBI and non-CBI data, the CBI 

responses may be deducible from the output if the non-CBI data is also publicly available. 

Typically, CBI data can be masked (i.e., is non-deducible) if it is combined with at least two 

other CBI data points into an aggregated value (i.e., at least three CBI data points in the 

grouping). 

Some of the analyses that EPA performed used data for only a subset of responses (e.g., 

operators by basin, discharging operators, small business operators). In cases where EPA 

analyzed only a subset of responses, EPA assessed whether there were three or more operators in 

the subset that claimed the information as CBI. The scenarios below illustrate how CBI can be 

deduced from aggregated data and non-CBI responses: 

Scenario 1: EPA is using cost data from 10 operators in an analysis. Two operators, CBI-A 

and CBI-B, claimed the data CBI and the remaining 8 did not make confidentiality claims. 

EPA is considering whether to release the aggregated summary cost for the 10 operators as 

well as the non-CBI data from the 8 operators.

In this case, EPA can not release the 8 non-CBI responses because operator CBI-A could use 

this publicly available information and knowledge of their own costs to deduce Operator 

CBI-B’s costs. CBI deducible information would be released. 

Scenario 2: EPA is using cost data from 10 operators in an analysis. Five operators claimed 

the data CBI and the remaining five did not make confidentiality claims. EPA is considering 

whether to release the aggregated summary costs for the 10 operators and the non-CBI data 

from the 5 operators.

In this case, EPA can release the 5 non-CBI responses. The individual 5 CBI operators would 

not have enough information to determine the specific costs for their competitors.

Scenario 3: EPA is using cost data from 10 operators in an analysis. Five operators claimed 

the data CBI and the remaining five did not make confidentiality claims. EPA would also like 

to aggregate and provide data by small business status. The table below presents the operator 

responses by small business status. EPA is considering whether to release the aggregated 

summary costs for the 10 operators and the non-CBI data from the 5 operators.
Memorandum

April 2, 2013

Page 9

Cost Data Used in Analysis

Industry Analysis Small Business Analysis

Total Responses 10 4

Number of CBI 

Responses 5 2

Number of Non-CBI 

Responses 5 2

As shown in the table, EPA would not be able to present aggregated information for small 

businesses and release the non-CBI data. Operators could use the aggregated small business 

data and the two non-CBI responses to deduce information about the two CBI small business 

operators.

4.0 EPA RATIONALE FOR DEVELOPING PUBLICLY AVAILABLE DATABASES

Using the summary of CBI claims in the responses to the Screener and Detailed 

Questionnaire and EPA’s consideration for CBI deducibility, EPA determined whether it was 

possible to provide the CBM databases containing information collected from industry in the 

public record.

Screener Database

Overall, only six percent of the operators (15 out of 251 operators) claimed any

information CBI (see Table 2). As discussed previously, because the Screener did not contain 

CBI indicators for each question, EPA is not providing a sanitized database to protect the 

potential for CBI disclosure from the Screeners. The full CBI database will be held in the CBI 

record.

Engineering and Economic Databases

EPA used information from the Detailed Questionnaire to develop an analysis of existing 

discharging CBM projects. As shown in Table 6, developing sanitized versions of the Detailed 

Questionnaire databases will require EPA to eliminate at least 70 percent of the responses EPA 

received. EPA determined that it would not be appropriate to sanitize these databases because the 

very limited amount of non-CBI information (30 percent or less) would not appropriately 

represent CBM operations.

EPA considered whether aggregated results could be presented at the basin level while 

still protecting CBI. Table 4 shows that seven basins had three or more CBI responses when 

considering the entire CBM industry. However, when EPA considered smaller subsets of the 

data for which EPA has conducted analyses, EPA identified only four of the thirteen basins for 

which EPA can provide sanitized data. EPA considered the level of CBI data that would need to 

be removed for these four basins to develop sanitized engineering and economic databases and 

determined it was not effective to generate sanitized versions of the databases. The engineering 

and economic databases containing all responses from the Detailed Questionnaire are included in 

the CBI record.
Memorandum

April 2, 2013

Page 10

Pollutant Database

As noted in Table 1, the pollutant database contains data submitted with the Detailed 

Questionnaire by operators who discharge any or all CBM produced water to surface water.

Operators submitted well, pre- and post-treatment, and discharge data. The database also 

contains data from state discharge monitoring reports from the Alabama, Montana, and 

Wyoming permitting programs.

As shown in Table 6, operators claimed 73 percent of the pollutant data submitted with 

the Detailed Questionnaire as CBI. Although operators may have claimed discharge data CBI in 

the Detailed Questionnaire, discharge data are not eligible for a CBI claim. As such, EPA can 

provide a non-CBI database containing all discharge data used in EPA’s analysis of the CBM 

industry. This database includes discharge data reported with the Detailed Questionnaire and 

data from discharge monitoring reports submitted through state permitting programs. EPA did 

not include pollutant data for sample points at the well or at pre- and post-treatment points in this 

database because they were appropriately claimed as CBI. The pollutant database containing

pollutant data for all locations, including at the well and at treatment locations upstream from the 

point of discharge, is also included in the CBI portion of the docket.
Memorandum

April 2, 2013

Attachment 1

Attachment 1

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

Anadarko BBR OIL CORPORATION

Anadarko Belport Oil Inc.

Anadarko BIXLER CHAD JR

Anadarko Bratco Operating Company

Anadarko BROWER OIL & GAS CO., INC

Anadarko BULLSEYE OPERATING LLC

Anadarko CBM GAS COMPANY LLC

Anadarko CONCORDE RESOURCES CORPORATION

Anadarko CONSTELLATION ENERGY PARTNERS

Anadarko DAVIS OPERATING COMPANY

Anadarko DFP OIL COMPANY

Anadarko EAKIN EXPLORATION INC

Anadarko ENDEAVOR ENERGY RESOURCES, LP

Anadarko Envirotek Fuel Systems - Out of Business

Anadarko HARRISON OIL & GAS INC

Anadarko LAPETCO INC

Anadarko LISTON V DEAN

Anadarko MAHALO ENERGY (USA) INC

Anadarko NEWFIELD EXPL MIDCONTINENT INC

Anadarko OKAN GAS COMPANY LLC

Anadarko PANOAK OIL & GAS CORPORATION

Anadarko PERFORMANCE ENERGY PARTNERS LLC

Anadarko PETROHAWK OPERATING COMPANY

Anadarko PONTOTOC PRODUCTION COMPANY INC/ASCENT ENERGY, INC.

Anadarko POWER OIL COMPANY

Anadarko PR Operating

Anadarko PRICE OPERATING COMPANY INC

Anadarko PUTNAM ROY D

Anadarko ROCKFORD CBM LLC

Anadarko ROGERS COUNTY COAL SEAM LLC

Anadarko Slayden, James C.

Anadarko STITES ENERGY LLC

Appalachian APPALACHIAN ENERGY

Appalachian CNX Gas Company LLC

Appalachian COAL GAS RECOVERY LLC

Appalachian COAL GAS TRANSPORTATION, LLC
Memorandum

April 2, 2013

Page 12

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

Appalachian Dominion Exploration & Production Inc. 

Appalachian Enervest Operating Co.

Appalachian EQT Production

Appalachian GEOMET, INC.

Appalachian JESMAR ENERGY

Appalachian NORTHPORT PRODUCTION COMPANY

Appalachian Penn Virginia Oil & Gas Corporation

Appalachian RANGE RESOURCES- APPALACHIA, LLC

Appalachian RANGE RESOURCES- PINE MOUNTAIN INC.

Appalachian RIDGEVIEW GAS COMPANY

Appalachian Vitruvian Exploration

Arkla CHC ENERGY, LLC

Arkla SOUTHWESTERN ENERGY PROD. CO.

Arkoma Ardmore Production & Exploration Co.

Arkoma ARKOMA GAS COMPANY

Arkoma BC OPERATING INC

Arkoma BEAR PRODUCTION INC

Arkoma BROWER OIL & GAS CO., INC

Arkoma Canaan Resources LLC

Arkoma CHESAPEAKE OPERATING INC

Arkoma CHOCTAW GAS COMPANY

Arkoma COASTAL PLAINS ENERGY INC

Arkoma DAVIS OPERATING COMPANY

Arkoma Devon Energy Production Company, LP

Arkoma DYNE EXPLORATION COMPANY

Arkoma EL PASO E&P COMPANY, L.P.

Arkoma EVANS PRODUCTION COMPANY

Arkoma Galaxy Energy Inc.

Arkoma J B DRILLING COMPANY

Arkoma Jaco Energy Company, Inc.

Arkoma LEFCO RESOURCES LLC

Arkoma MARBET LLC

Arkoma Meade Energy Corporation

Arkoma MONARCH ENERGY COMPANY LLC

Arkoma MUSTANG FUEL CORPORATION

Arkoma NADEL AND GUSSMAN LLC

Arkoma O G P OPERATING INC
Memorandum

April 2, 2013

Page 13

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

Arkoma Penn Virginia MC Operating Co., LLC

Arkoma PETROHAWK OPERATING COMPANY

Arkoma PETROLEUM DEVELOPMENT COMPANY

Arkoma PETROQUEST ENERGY LLC

Arkoma Pierco Energy Corp.

Arkoma QUESTAR EXPLORATION & PRODUCTION COMPANY

Arkoma REDWINE RESOURCES INC

Arkoma RIO VISTA ENERGY

Arkoma Shidler, Mark L., Inc.

Arkoma Tag Team Resources LLC

Arkoma UNIT PETROLEUM COMPANY

Arkoma VECTRA CBM LLC

Arkoma Vitruvian Exploration

Arkoma WILDHORSE OPERATING COMPANY

Arkoma WILLIAMS PROD MIDCONTINENT CO

Arkoma WYNN-CROSBY OPERATING LP

Arkoma XTO Energy Inc.

Black Warrior BLACK WARRIOR METHANE CORP.

Black Warrior CHEVRON U.S.A.

Black Warrior EL PASO E&P COMPANY, L.P.

Black Warrior Energen Resources Corp.

Black Warrior HighMount Black Warrior Basin LLC

Black Warrior KAVANAUGH ENERGY SERVICES INC

Black Warrior ROBINSON'S BEND OPERATING II, LLC

Black Warrior SAGA PETROLEUM CORP. LLC

Cahaba GEOMET, INC.

Cahaba PetroNova, LLC

Cahaba Vitruvian Exploration

Cherokee/Forest City 3 B ENERGY INC

Cherokee/Forest City Admiral Bay USA Inc

Cherokee/Forest City BOOM CO.

Cherokee/Forest City CARROLL ENERGY, LLC

Cherokee/Forest City Cherokee Wells LLC

Cherokee/Forest City COLT ENERGY INC

Cherokee/Forest City CONQUEST CHEROKEE, LLC

Cherokee/Forest City DAKOTA PRODUCTION CO

Cherokee/Forest City DARK TREASURES OIL & GAS/ALLENERGY, INC.
Memorandum

April 2, 2013

Page 14

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

Cherokee/Forest City DART CHEROKEE BASIN OPERATING COMPANY, LLC

Cherokee/Forest City DAVIS OPERATING COMPANY

Cherokee/Forest City DEVON SFS OPERATING

Cherokee/Forest City DORADO GAS RESOURCES

Cherokee/Forest City Double 7 O&G, LLC

Cherokee/Forest City ENDEAVOR ENERGY RESOURCES, LP

Cherokee/Forest City Enerjex Kansas

Cherokee/Forest City FORT SCOTT METHANE PARTNERS, LLC

Cherokee/Forest City Foster O&G

Cherokee/Forest City G & J OIL COMPANY, INC

Cherokee/Forest City GEO OIL & GAS SERVICES

Cherokee/Forest City HEARTLAND OIL & GAS

Cherokee/Forest City Jayhawk Energy, Inc.

Cherokee/Forest City JONES & BUCK DEVELOPMENT

Cherokee/Forest City JONES GAS CORPORATION

Cherokee/Forest City LAYNE ENERGY, INC.

Cherokee/Forest City LV NEODESHA OPERATIONS LLC

Cherokee/Forest City Osage Resources LLC

Cherokee/Forest City OSBORN ENRGY, LLC

Cherokee/Forest City PRODUCTION MAINTENANCE SERVICE

Cherokee/Forest City QUEST CHEROKEE, LLC

Cherokee/Forest City ROXANNA PIPELINE, INC

Cherokee/Forest City SEK Energy, LLC

Cherokee/Forest City STAGECOACH E & P, LLC

Cherokee/Forest City STP, INC.

Cherokee/Forest City VERDE OIL COMPANY

Cherokee/Forest City WILLIS ENERGY

Green River Anadarko Petroleum Corporation

Green River DOUBLE EAGLE PETROLEUM CO

Green River HUDSON GROUP LLC

Green River Merit Energy Company

Green River PIONEER NATURAL RESOURCES USA, INC.

Green River REDWINE RESOURCES INC

Green River Warren E&P Inc

Green River Yates Petroleum Corporation

Illinois BARGER ENGINEERING

Illinois BPI ENERGY, INC.
Memorandum

April 2, 2013

Page 15

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

Illinois Pulse Energy Systems

Permian/Ft. Worth DIAMONDBACK OPERATING, LP

Powder River (MT) FIDELITY EXPLORATION & PRODUCTION CO

Powder River (MT) PINNACLE GAS RESOURCES INC

Powder River (MT) ST.MARY LAND AND EXPLORATION

Powder River (WY) 44 MAG PRODUCTION INC

Powder River (WY) Anadarko Petroleum Corporation

Powder River (WY) Arch Coal

Powder River (WY) BERENERGY CORP

Powder River (WY) BILL BARRETT CORPORATION

Powder River (WY) BLACK DIAMOND ENERGY INC.

Powder River (WY) BLACKSTONE OPERATING INC

Powder River (WY) BOWERS OIL & GAS INC.

Powder River (WY) C & H WELL SERVICING INC

Powder River (WY) Cedar Resources Corporation

Powder River (WY) Citation Oil & Gas Corp.

Powder River (WY) COLEMAN OIL & GAS INC

Powder River (WY) Comet Energy Services LLC

Powder River (WY) Continental Production Company, LLC

Powder River (WY) Cosner CBM LLC

Powder River (WY) COX KENDALL JAY

Powder River (WY) Devon Energy Production Company, LP

Powder River (WY) DNR OIL & GAS INC

Powder River (WY) DUNCAN OIL INC

Powder River (WY) EMERALD OPERATING COMPANY

Powder River (WY) FEDERATED OIL & GAS PROPERTIES, INC

Powder River (WY) FIDELITY EXPLORATION & PRODUCTION CO

Powder River (WY) Foundation Wyoming Land Company

Powder River (WY) HIGH ENERGY INC.

Powder River (WY) HIGH PLAINS GAS LLC

Powder River (WY) HILCORP ENERGY COMPANY

Powder River (WY) J.M. Huber Corporation

Powder River (WY) JIM'S WATER SERVICE OF CO, INC.

Powder River (WY) KENNEDY OIL

Powder River (WY) L & J OPERATING INC

Powder River (WY) LORAL OPERATING LLC

Powder River (WY) MCCARTNEY ENGINEERING LCC
Memorandum

April 2, 2013

Page 16

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

Powder River (WY) Medallion Exploration

Powder River (WY) Merit Energy Company

Powder River (WY) MERRIMAC OIL & GAS LLC

Powder River (WY) Mountain Hawk Energy

Powder River (WY) MTG OPERATING COMPANY

Powder River (WY) NORTH FINN LLC

Powder River (WY) NORTHWEST ENERGY LLC

Powder River (WY) OILFIELD SALVAGE & SERVICE COMPANY

Powder River (WY) OPES PRODUCTION INC

Powder River (WY) Patriot Energy Resources, Inc.

Powder River (WY) PAUPERS DREAM COMPANY

Powder River (WY) Peabody Natural Gas LLC

Powder River (WY) Pennaco Energy Incorporated

Powder River (WY) Petro-Canada Resources (USA) Inc.

Powder River (WY) PETROX RESOURCES INC

Powder River (WY) PINNACLE GAS RESOURCES INC

Powder River (WY) PURE PETROLEUM LLC

Powder River (WY) REDSTONE RESOURCES INC.

Powder River (WY) RESOLUTE WYOMING, INC

Powder River (WY) RIM OPERATING INC

Powder River (WY) SANDS OIL COMPANY INC

Powder River (WY) SOUTHWESTERN PRODUCTION CORP.

Powder River (WY) ST.MARY LAND AND EXPLORATION

Powder River (WY) STORM CAT ENERGY (USA) OPERATING CORP

Powder River (WY) SUNCOR ENERGY (NATURAL GAS) AMERICA INC

Powder River (WY) The Termo Company

Powder River (WY) THOMAS OPERATING COMPANY INC

Powder River (WY) TREND EXPLORATION I LLC

Powder River (WY) Williams Production RMT Company

Powder River (WY) WINDSOR GAS DRAW, LLC

Powder River (WY) WINDSOR JEPSON, LLC

Powder River (WY) XTO Energy Inc.

Powder River (WY) Yates Petroleum Corporation

Raton EL PASO E&P COMPANY, L.P.

Raton PIONEER NATURAL RESOURCES USA, INC.

Raton PRESCO

Raton Red River Ranch Holdings, LLC
Memorandum

April 2, 2013

Page 17

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

Raton XTO Energy Inc.

San Juan BASIN MINERALS OPERATING COMPANY

San Juan BENSON-MONTIN-GREER DRILLING CORP

San Juan BIG RUN PRODUCTION COMPANY

San Juan BP AMERICA PRODUCTION COMPANY

San Juan BRECK OPERATING CORP

San Juan CDX RIO, LLC

San Juan CHAPARRAL OIL & GAS CO

San Juan CHEVRON MIDCONTINENT LP

San Juan CHEVRON U.S.A.

San Juan COLEMAN OIL & GAS INC

San Juan CONOCO PHILLIPS COMPNAY

San Juan D J SIMMONS INC

San Juan Devon Energy Company, LP

San Juan Dugan Production Corp

San Juan EL PAMCO INC.

San Juan ELM RIDGE RESOURCES

San Juan ENERGEN RESOURCES CORP.

San Juan Enervest Operating LLC

San Juan FOUR STAR OIL & GAS COMPANY

San Juan Gosney & Sons Inc.

San Juan GREAT WESTERN DRILLING CO

San Juan HOLCOMB OIL & GAS INC.

San Juan KIMBELL OIL CO OF TEXAS

San Juan Koch Exploration Company, LLC

San Juan Kukui Operating Company

San Juan M & G DRILLING CO INC

San Juan MANANA GAS, INC

San Juan MARALEX RESOURCES, INC.

San Juan McElvain Oil & Gas Properties

San Juan MCKAY OIL & GAS LLC

San Juan Merrion Oil & Gas Corp

San Juan N M & O OPERATING CO

San Juan NOBLE ENERGY, INC.

San Juan PABLO OPERATING COMPANY

San Juan PETROGULF CORPORATION

San Juan PRO NM ENERGY INC
Memorandum

April 2, 2013

Page 18

Table A-1. List of Operators Receiving Screener Surveys

Basin Operator name

San Juan RC RESOURCES CORP

San Juan Red Willow Production Co

San Juan REDWOLF PRODUCTION INC

San Juan RICHARDSON OPERATING

San Juan Robert L Bayless Producer, LLC

San Juan ROCANVILLE CORP

San Juan Roddy Production Co Inc.

San Juan ROSETTA RESOURCES OPERATING LLC

San Juan Running Horse Production Co.

San Juan SAMSON RESOURCES COMPANY

San Juan SCHALK DEVELOPMENT CO

San Juan SG INTERESTS I LTD

San Juan SYNERGY OPERATING LLC

San Juan THOMPSON ENGR & PROD CORP

San Juan TURNER PRODUCTION CO

San Juan WEST LARGO CORP

San Juan WILLIAMS PRODUCTION COMPANIES, LLC

San Juan XTO Energy Inc.

San Juan Yates Petroleum Corporation

Uinta-Piceance Anadarko Petroleum Corporation

Uinta-Piceance CONOCO PHILLIPS COMPNAY

Uinta-Piceance Laramie Energy II, LLC

Uinta-Piceance MARALEX RESOURCES, INC.

Uinta-Piceance Marathon Oil Company

Uinta-Piceance MARION ENRGY, INC.

Uinta-Piceance NATIONAL FUEL CORPORATION

Uinta-Piceance PIONEER NATURAL RESOURCES USA, INC.

Uinta-Piceance SG INTERESTS I LTD

Uinta-Piceance WHITMAR EXPLORATION COMPANY

Uinta-Piceance Williams Production RMT Company

Uinta-Piceance XTO Energy Inc.

Wind River Devon Energy Production Company, LP
Memorandum

April 2, 2013

Page 19

Table A-2. List of Operators Receiving Detailed Questionnaires

Basin Operator name

Appalachian APPALACHIAN ENERGY

Appalachian CNX Gas Company LLC

Appalachian COAL GAS RECOVERY LLC

Appalachian COAL GAS TRANSPORTATION, LLC

Appalachian Dominion Exploration & Production Inc. 

Appalachian Enervest Operating Co.

Appalachian EQT Production

Appalachian GEOMET, INC.

Appalachian JESMAR ENERGY

Appalachian NORTHPORT PRODUCTION COMPANY

Appalachian Penn Virginia Oil & Gas Corporation

Appalachian RANGE RESOURCES- APPALACHIA, LLC

Appalachian RANGE RESOURCES- PINE MOUNTAIN INC.

Appalachian RIDGEVIEW GAS COMPANY

Appalachian Vitruvian Exploration

Arkla CHC ENERGY, LLC

Arkla SOUTHWESTERN ENERGY PROD. CO.

Black Warrior BLACK WARRIOR METHANE CORP.

Black Warrior CHEVRON U.S.A.

Black Warrior EL PASO E&P COMPANY, L.P.

Black Warrior Energen Resources Corp.

Black Warrior HighMount Black Warrior Basin LLC

Black Warrior KAVANAUGH ENERGY SERVICES INC

Black Warrior ROBINSON'S BEND OPERATING II, LLC

Black Warrior SAGA PETROLEUM CORP. LLC

Cahaba GEOMET, INC.

Cahaba PetroNova, LLC

Cahaba Vitruvian Exploration

Green River Anadarko Petroleum Corporation

Green River DOUBLE EAGLE PETROLEUM CO

Green River HUDSON GROUP LLC

Green River Merit Energy Company

Green River PIONEER NATURAL RESOURCES USA, INC.

Green River REDWINE RESOURCES INC

Green River Warren E&P Inc

Green River Yates Petroleum Corporation
Memorandum

April 2, 2013

Page 20

Table A-2. List of Operators Receiving Detailed Questionnaires

Basin Operator name

Illinois BARGER ENGINEERING

Illinois BPI ENERGY, INC.

Illinois Pulse Energy Systems

Permian/Ft. Worth DIAMONDBACK OPERATING, LP

Powder River (MT) FIDELITY EXPLORATION & PRODUCTION CO

Powder River (MT) PINNACLE GAS RESOURCES INC

Powder River (MT) ST.MARY LAND AND EXPLORATION

Powder River (WY) Anadarko Petroleum Corporation

Powder River (WY) BILL BARRETT CORPORATION

Powder River (WY) BLACK DIAMOND ENERGY INC.

Powder River (WY) BLACKSTONE OPERATING INC

Powder River (WY) Citation Oil & Gas Corp.

Powder River (WY) COLEMAN OIL & GAS INC

Powder River (WY) Comet Energy Services LLC

Powder River (WY) Continental Production Company, LLC

Powder River (WY) Continental Production Company, LLC

Powder River (WY) Cosner CBM LLC

Powder River (WY) Devon Energy Production Company, LP

Powder River (WY) DNR OIL & GAS INC

Powder River (WY) DUNCAN OIL INC

Powder River (WY) EMERALD OPERATING COMPANY

Powder River (WY) FIDELITY EXPLORATION & PRODUCTION CO

Powder River (WY) HIGH ENERGY INC.

Powder River (WY) HILCORP ENERGY COMPANY

Powder River (WY) J.M. Huber Corporation

Powder River (WY) JIM'S WATER SERVICE OF CO, INC.

Powder River (WY) L & J OPERATING INC

Powder River (WY) LORAL OPERATING LLC

Powder River (WY) MCCARTNEY ENGINEERING LCC

Powder River (WY) Merit Energy Company

Powder River (WY) Mountain Hawk Energy

Powder River (WY) MTG OPERATING COMPANY

Powder River (WY) NORTH FINN LLC

Powder River (WY) OPES PRODUCTION INC

Powder River (WY) Patriot Energy Resources, Inc.

Powder River (WY) Peabody Natural Gas LLC

Powder River (WY) Pennaco Energy Incorporated
Memorandum

April 2, 2013

Page 21

Table A-2. List of Operators Receiving Detailed Questionnaires

Basin Operator name

Powder River (WY) Petro-Canada Resources (USA) Inc.

Powder River (WY) PETROX RESOURCES INC

Powder River (WY) PINNACLE GAS RESOURCES INC

Powder River (WY) PURE PETROLEUM LLC

Powder River (WY) REDSTONE RESOURCES INC.

Powder River (WY) RESOLUTE WYOMING, INC

Powder River (WY) RIM OPERATING INC

Powder River (WY) SANDS OIL COMPANY INC

Powder River (WY) ST.MARY LAND AND EXPLORATION

Powder River (WY) STORM CAT ENERGY (USA) OPERATING CORP

Powder River (WY) SUNCOR ENERGY (NATURAL GAS) AMERICA INC

Powder River (WY) TREND EXPLORATION I LLC

Powder River (WY) Williams Production RMT Company

Powder River (WY) WINDSOR GAS DRAW, LLC

Powder River (WY) WINDSOR JEPSON, LLC

Powder River (WY) XTO Energy Inc.

Powder River (WY) Yates Petroleum Corporation

Raton EL PASO E&P COMPANY, L.P.

Raton PIONEER NATURAL RESOURCES USA, INC.

Raton PRESCO

Raton Red River Ranch Holdings, LLC

Raton XTO Energy Inc.

San Juan BENSON-MONTIN-GREER DRILLING CORP

San Juan BP AMERICA PRODUCTION COMPANY

San Juan CHEVRON U.S.A.

San Juan Dugan Production Corp

San Juan Gosney & Sons Inc.

San Juan HOLCOMB OIL & GAS INC.

San Juan Koch Exploration Company, LLC

San Juan MANANA GAS, INC

San Juan Merrion Oil & Gas Corp

San Juan N M & O OPERATING CO

San Juan RC RESOURCES CORP

San Juan RICHARDSON OPERATING

San Juan Robert L Bayless Producer, LLC

San Juan ROCANVILLE CORP

San Juan ROSETTA RESOURCES OPERATING LLC
Memorandum

April 2, 2013

Page 22

Table A-2. List of Operators Receiving Detailed Questionnaires

Basin Operator name

San Juan XTO Energy Inc.

San Juan XTO Energy Inc.

Uinta-Piceance Anadarko Petroleum Corporation

Uinta-Piceance CONOCO PHILLIPS COMPNAY

Uinta-Piceance Laramie Energy II, LLC

Uinta-Piceance MARALEX RESOURCES, INC.

Uinta-Piceance Marathon Oil Company

Uinta-Piceance MARION ENRGY, INC.

Uinta-Piceance NATIONAL FUEL CORPORATION

Uinta-Piceance PIONEER NATURAL RESOURCES USA, INC.

Uinta-Piceance SG INTERESTS I LTD

Uinta-Piceance WHITMAR EXPLORATION COMPANY

Uinta-Piceance Williams Production RMT Company

Uinta-Piceance XTO Energy Inc.

Wind River Devon Energy Production Company, LP