List of Meetings EPA Participated in with Stakeholders and Industry Groups During the Development of the Proposed Pretreatment Standards for Unconventional Oil and Gas Extraction - DCN SGE00967 Date Topic Participants/Reference 12/5/2011, 1/5/2012, 7/28/2014 Reserved Environmental Services, LLC (RES) - Centralized waste treatment facility Call: Andrew Kicinski, Nicholas Haden, RES; Brian D'Amico, Lisa Biddle, EPA; Meghan Camp, Brent Ruminski, ERG. Site Visit: Nicholas Haden, Andrew Kicinski, RES; Lisa Biddle, Jan Goodwin, Adrian Hanley, Karen Milam, Jesse Pritts, EPA; Joel Blanco-Gonzalez, EPA Region 3; Katie Boone, Michael Kaufman, Pam McQuistian, PA DEP; Cortney Itle, Kathleen Wu, ERG. See "Notes on Conference Call with Reserved Environmental Services, LLC" (DCN SGE00245) and "Reserved Environmental Services (RES) - Sanitized SVR and Notes" (DCN SGE01065)

12/6/2011 Meeting with Oil and Gas Industry Associations Mary Smith, Jan Goodwin, Robert Wood, James Covington, Erik Helm, Brian D’Amico, Jan Matuszko, Marla Smith, Tom Born, Ahmar Siddiqui, Lisa Biddle, Cuc Schroeder, William Swietlik, Scott Wilson, Jan Pickerel Richard Witt, EPA; Matt Kellogg, Lee Fuller, IPAA; Amy Farrell, ANGA; Roger Claff, API; Alby Modiano, USOGA; Mark Himmelstein, NES; Gerry Jacob, PNR; Bruce Thompson, AXPC; Dennis Latham, CMAA 12/19/2011, 1/4/2012, 2/8/2012, 1/11/2013 212 Resources. Treatment of UOG Extraction Wastewater Mike Zumwalt, Leslie Merrill, Dan Owen, 212 Resources; Lisa Biddle, Brian D'Amico, EPA; Meghan Camp, Brent Ruminski, Betsy Bicknell, ERG See: "Notes on Conference Call with 212 Resources" (DCN SGE00244) 1/11/2012, 2/8/2012 Lamnipipe. Treatment Technologies Don Nevin, Lamnipipe; Fred Eames, Hunton & Williams (on behalf of Lamnipipe); Lisa Biddle, Brian D'Amico, Richard Witt, EPA; Meghan Camp, Brent Ruminski, ERG. See: "Notes on Meeting with Lamnipipe Inc. on 8 February 2012" (DCN SGE00699)

2/7/2012 Aquaback -Treatment Technologies Scott Newquist, Aquaback; Bob Bastian, Chrystal Beasley, Scott Wilson, Jan Pickerel, Lisa Biddle, EPA

2/29/2012 Meeting with Industry Representatives on ELG rulemaking for UOG Rob Wood; January Matuszko; Erik Helm; Tom Born; Jan Pickerel; Kim Petro; James Covington; Marla Smith; Brian D’Amico; Lisa Biddle; Ahmar Siddiqui; Cuc Schroeder; Maria Gomez-Taylor; Richard Mark; Jill Dean; Lee Fuller; Stephanie Meadows; Jason Smith Sarah Banaszak; Amy Farrell; Marc Himmelstein; Rebecca Thingelstad; George King; Craig Brown; Matt Kellogg; Jan Gilbreath; Richard Witt; Brian Schumacher; Chris Impelliteri; David Marker; Erik Edgar; Mike Fisher; Tatiana Melnikova; Betsy Bicknell; Meghan Camp; Brent Ruminski See "Notes for Shale Gas Industry Meeting Held on 29 February 2012" (DCN SGE00521)

3/26/2012 H2Environmental (H2E) Treatment Technology Dr. Jerry Hebert, H2E; Lisa Biddle, EPA

March 31, 2015 Page 1of 6List of Meetings EPA Participated in with Stakeholders and Industry Groups During the Development of the Proposed Pretreatment Standards for Unconventional Oil and Gas Extraction - DCN SGE00967 Date Topic Participants/Reference 5/9/2012 Chesapeake Energy - UOG operations Jennifer Hoffman, Troy Jordan, Brian Grove, Jimmie Hannontree, Chesapeake; Jan Matuszko, Brian D'Amico, Lisa Biddle, Cuc Schroeder, Erik Helm, Richard Witt, EPA; Meghan Camp, Brent Ruminski, ERG. See "Site Visit Report Chesapeake Energy Corporation Marcellus Shale Gas Operations Sanitized" (DCN SGE00635) 5/15/2012 BLX - oil and gas operations Richard Brewer, BLX; Brian D'Amico, Lisa Biddle, Erik Helm, EPA; Betsy Bicknell, Meghan Camp, Brent Ruminski, ERG. See "Notes on Conference Call with BLX, Inc on 15 May 2012" (DCN SGE00283)

5/24/2012, 8/6/2012 Talisman Oil and Gas Operations Walt Hufford, Talisman; John Sohn, McKenna, Long, and Aldridge, LLP; Lisa Biddle, Erik Helm, Brian D'Amico, EPA; Meghan Camp, Brent Ruminski, ERG. See "Talisman - Sanitized Notes" (DCN SGE01064) 6/5/2012 CNX (Consol) Gas Corporation - oil and gas operations Tom Medalia, CNX (Console); Lisa Biddle, Brian D'Amico, EPA

6/14/2012, 9/17/2012, 5/6/2014 Clean Streams - CWT facility in Williamsport, PA Tim Miller, Richard Weaver, Clean Streams; Lisa Biddle, Tom Born, Brian D'Amico, Erik Helm, Pooja Parikh, EPA; Casey MacQueen, Brent Ruminski, ERG. See "Site Visit Report: US Gas Field Fluids Management (formerly Clean Streams) Marcellus Shale Gas Operation" (DCN SGE00299) 6/14/2012, 9/18/2012 Eureka - CWT facility in Williamsport, PA Jerel Bogden, Dan Ertel, John Staton, Eureka; Lisa Biddle, Tom Born, Brian D'Amico, Erik Helm, Pooja Parikh, EPA; Casey MacQueen, Brent Ruminski, ERG. See "Site Visit Report Eureka Resources, LLC Marcellus Shale Gas Operations" (DCN SGE00300)

6/19/2012, 8/13/2012 Citrus Energy Corporation - UOG operations Rick Fields, Citrus; Heather Burkhart, Entech Engineering, Inc.; Lisa Biddle, Erik Helm, EPA; Meghan Camp, Casey MacQueen, ERG. See "Site Visit Report Citrus Energy Corporation Marcellus Shale Gas Operations" (DCN SGE00275)

6/26/2012 Anadarko Petroleum Corporation - UOG operations Clay Bretches, Mark Conrad, Chris Doyle, Mark Hanley, Greg Pensabene, Justin Stone, Rob Gough, Brad Milliken, Doug Shotts, Nathan Bennett, Anadarko; Lisa Biddle, EPA. See "Site Visit Report Anadarko Petroleum Corporation Marcellus Shale Gas Operations" (DCN SGE00280) 7/2/2012 North Star Disposal - Information on underground injection wells used for disposal of oil and gas extraction wastewater Bill Hays, Dave Jenkins, Terry Smerks, North Star; Lisa Biddle, Erik Helm, EPA; Betsy Bicknell, Meghan Camp, Brent Ruminski, Lori Weiss, ERG. See "Conference Call with North Star Disposal, Inc Regarding Underground Injection Operations in Ohio" (DCN SGE00279)

March 31, 2015 Page 2of 6List of Meetings EPA Participated in with Stakeholders and Industry Groups During the Development of the Proposed Pretreatment Standards for Unconventional Oil and Gas Extraction - DCN SGE00967 Date Topic Participants/Reference 7/18/2012, 8/28/2012, 5/8/2014 XTO Energy, Update on ELG rulemaking for UOG Joe Cardenas, Paul Krishna, XTO; Robert Nolan, ExxonMobil, Lisa Biddle, Erik Helm, Brian D'Amico, Ahmar Siddiqui, Tom Born, Pooja Parikh, EPA; Meghan Camp, Brent Ruminski, ERG. See "Meeting with XTO Energy, Inc. about Unconventional Oil and Gas Sanitized (DCN SGE00276) 8/8/2012 Information about ELG rulemaking for UOG and state-level data and considerations Lisa Biddle, Jan Pickrel, Chrystal Beasley, EPA; representatives from several states including Alaska, Florida, Michigan, Minnesota, New Jersey, North Carolina, Ohio, Oklahoma, Tennessee, Texas, Utah, and Virginia; I-Hsin Lee, Christine Wong, Tetra Tech. See "States Pretreatment Coordinators' Quarterly Conference Call" (DCN SGE00742) 9/5/2012 Meeting with Industry Representatives on ELG rulemaking for UOG Lisa Biddle, Brian D’Amico, Jan Matuszko, EPA; Alby Modiano, U.S. Oil and Gas Association; Dennis Latham, Alabama Coalbed Methane Association; Lee Fuller, Matt Kellogg, IPAA; Marc Himmelstein, National Environmental Strategies; Bruce Thompson, American Exploration and Production Council; Jerry Jacob, Pioneer Natural Resources; Chris Hill, Chesapeake; Amy Farrell, Jason Smith, America’s Natural Gas Alliance

10/10/2012 Meeting with Industry Representatives - ELGs 101 for trade associations Robert Wood, Erik Helm, Brian D’Amico, Jan Matuszko, Ahmar Siddiqui, Lisa Biddle, Andrew Kriger, Scott Wilson, Pooja Parikh, Paula VanLare, EPA; Matt Kellogg, Lee Fuller, IPAA; Amy Farrell, Jason Smith, ANGA; Roger Claff, Amy Emmert, Peter Tolsdorf, API; Tim Stewart, USOGA; Mark Himmelstein, NES; Bruce Thompson, AXPC; Dennis Latham, CMAA; Jerry Jacobs, Pioneer Natural Resources 10/10/2012, 1/24/2013, 4/25/2013, 8/5/2013, 12/5/2013, 8/13/2014 Information about ELG rulemaking for UOG and state-level data and considerations Lisa Biddle, Jan Matuszko, Lynn Zipf, Andrew Hanson, Damon Highsmith, Eileen McGovern, Elizabeth Skane, William Nickerson, Scott Wilson, EPA; representatives from ECOS, ACWA, and the IOGCC; and representatives from several states including Oklahoma, Wyoming, Ohio, Alaska, Colorado, Alabama, West Virginia, Texas, and Pennsylvania. See "Summary of EPA-State Pilot on Improving Regulatory Implementation" (DCN SGE00762)

10/11/2012 Quicksilver - UOG operations Todd Hutson, Keith Mouser, James Segars, Carl Bowers, Quicksilver; Lisa Biddle, Ahmar Siddiqui, Brian D'Amico, EPA; Meghan Camp, Brent Ruminski, ERG. See "Conference Call with Quicksilver Resources, Inc. About Shale Gas Operations Sanitized" (DCN SGE00607) 11/5/2012 ConocoPhillips - UOG operations Warren Emerson, Neal Goates, Steve Jester, Alena Jonas, ConocoPhillips; Lisa Biddle, Brian D'Amico, Erik Helm, EPA; Meghan Camp, Brent Ruminski, ERG. See "Conference Call with ConocoPhillips about shale gas operations" (DCN SGE00695)

March 31, 2015 Page 3of 6List of Meetings EPA Participated in with Stakeholders and Industry Groups During the Development of the Proposed Pretreatment Standards for Unconventional Oil and Gas Extraction - DCN SGE00967 Date Topic Participants/Reference 2/20/2013 Meeting with Industry Representatives from IPAA on ELG rulemaking for UOG Lee Fuller, Matt Kellogg, IPAA; Lisa Biddle, Jan Matuszko, Ahmar Siddiqui, Karen Milam, EPA; Brent Ruminski, ERG. See "Meeting with IPAA about the Unconventional Oil and Gas Effluent Guideline Rulemaking" (DCN SGE00696)

2/28/2013 Meeting with Industry Representatives on ELG rulemaking for UOG Amy Farrell, Jason Smith, ANGA; Lee Fuller, Matt Kellogg, IPAA; Amy Emmert, API; Jeff Bull, Troy Jordan, Chesapeake; Joe Cardenas, Lindsay Bass, XTO Energy; Michael Dunkle, Pioneer; Craig Brown, QEP; Michael Parker, ExxonMobil; Marc Himmelstein, NES; Dennis Latham, CMAA; Lisa Biddle, Jan Matuszko, Ahmar Siddiqui, Karen Milam, Jesse Pritts, Cindy Roberts, EPA; Brent Ruminski, Betsy Bicknell, ERG; Erik Edgar, Ryan Stapler, Abt. See "Meeting with Industry Representatives about the Unconventional Oil and Gas Effluent Guideline Rulemaking" (DCN SGE00613)

5/20/2013 Center for Sustainable Shale Development (CSSD) - Information about ELG rulemaking for UOG and background on CSSD Andrew Place, Center for Sustainable Shale Development; Lisa Biddle, Jan Matuszko, Karen Milam, Scott Wilson, Chitra Kumar, Jesse Pritts, Cindy Roberts, EPA

8/14/2013 Information about ELG rulemaking for UOG and state-level data and considerations Lisa Biddle, Jesse Pritts, Rebecca Roose, Ginny Phillips, Jan Pickrel, EPA; Susan Kirsch, Association of Clean Water; administrators from ACWA; representatives from several states including Alaska, Arkansas, California, Colorado, Iowa, Kansas, Michigan, Missouri, Minnesota, North Carolina, Oklahoma, Oregon, Tennessee, Texas, and West Virginia; I-Hsin Lee, Christine Wong, Tetra Tech. See "States Pretreatment Coordinators' Bi-Monthly Conference Call" (DCN SGE00743)

8/30/2013 Call with Environmental Defense Fund (EDF) - Information about ELG rulemaking for UOG Dan Mueller and Nichole Saunders, EDF; Lisa Biddle, Jan Matuszko, EPA

9/5/2013 Ohio State University's Plans to study Hydrualic Fracturing Jeff Daniels, Roman Lanno, OSU; Lisa Biddle, Jesse Pritts, Tom Born, Chitra Kumar, Chris Impellitteri, Kirk Scheckel, EPA

March 31, 2015 Page 4of 6List of Meetings EPA Participated in with Stakeholders and Industry Groups During the Development of the Proposed Pretreatment Standards for Unconventional Oil and Gas Extraction - DCN SGE00967 Date Topic Participants/Reference 9/12/2013 Southwestern Energy - UOG operations Thomas Alexander, James Bolander, Peter Fyfe, Roy Hartstein, Mark Mazock, Sean McKaren, Doug Melton, Southwestern; Lisa Biddle, Karen Milam, Jesse Pritts, EPA; Maria Okpala, EPA Region 6; Sarah Hays, Brent Ruminski, ERG. See "Site Visit Report Southwestern Energy Fayetteville Shale Operations" (DCN SGE00625)

11/8/2013 Purestream - Treatment Technologies Amy Hansen, Todd Ennenga, Purestream; Lisa Biddle, Jesse Pritts, Karen Milam, EPA; Meghan Camp, Sarah Hays, ERG. See "Meeting with Purestream Technology about Treatment Technologies Relevant to the Unconventional Oil and Gas Industry" (DCN SGE00717)

11/14/2013 North Carolina Regulations and Future Oil and Gas Activity Lisa Biddle, EPA OW; Karri-Jo Shell, EPA Region 4; Lori Montgomery, PE, North Carolina Division of Water Resources

2/7/2014 Hydrozonix - Treatment Technologies Jinxuan Hu, Mark Patton, Hydrozonix; Brent Ruminski, ERG. See "Notes on Meeting with Hydrozonix, LLC on 7 February 2014" (DCN SGE00705) 2/11/2014 John Crane - Treatment technologies Chris Songer, Mike Kalodimos, John Crane; Lisa Biddle, Jesse Pritts, EPA; Sarah Hays, ERG. See "Meeting with John Crane about Treatment Technologies" (DCN SGE00718) 4/15/2014 Radium 226 Analyses at University of Pittsburgh Professor Vidic, University of Pittsburgh; Jesse Pritts, Lisa Biddle, Adrian Hanley, EPA; Kathleen Wu, Debbie Falatko, ERG

4/29/2014 Center for Sustainable Shale Development - Update on ELG rulemaking for UOG Lisa Biddle, Jan Matuszko, EPA; Susan Packard LeGros, Center for Sustainable Shale Development (CSSD)

5/14/2014, 6/4/2014 Information about ELG rulemaking for UOG and discussion of tribal considerations and data National Tribal Water Council (May 14, 2014); National Tribal Caucus (June 4, 2014); Lisa Biddle, Jan Matuszko, EPA. See "Summary of EPA Outreach and Coordination with Indian Tribes for the Proposed Pretreatment Standards for Unconventional Oil and Gas Extraction Wastewater" (DCN SGE00785)

5/29/2014 Information about ELG rulemaking for UOG and discussion of possible tribal considerations Jeff Hunt, Department of Interior; Lisa Biddle, EPA. See "Tribal Unconventional Oil and Gas Operations and Wastewater Management Call Summary" (DCN SGE01123)

6/30/2014 Call with Environmental Defense Fund (EDF) - Update on ELG rulemaking for UOG Dan Mueller and Nichole Saunders, EDF; Lisa Biddle, Jan Matuszko, EPA

March 31, 2015 Page 5of 6List of Meetings EPA Participated in with Stakeholders and Industry Groups During the Development of the Proposed Pretreatment Standards for Unconventional Oil and Gas Extraction - DCN SGE00967 Date Topic Participants/Reference 8/6/2014 Seneca oil and gas operations and
wastewater management and
treatment Randy Garrett, Seneca; Terry Beasy, Craig Clerkin, Bernie Duesel, John Weigold, Heartland; Jesse Pritts, Karen Milam, EPA; Debra Falatko, Cortney Itle, Sarah Yates, ERG. See "Site Visit Report Seneca Resources Corporation" (DCN SGE01047)

9/16/2014 Call with Environmental Defense Fund (EDF) - Update on ELG rulemaking for UOG Dan Mueller, Nichole Saunders, Scott Anderson, Holly Pearen, EDF; Brian Penttila, Consultant to EDF; Lisa Biddle, Jesse Pritts, Janet Goodwin, EPA

10/8/2014 IPAA meeting - Update on status of ELG rulemaking for UOG and CWT study Jesse Pritts, Lisa Biddle, EPA; Matt Kellogg, IPAA; Lee Fuller, IPAA; Andrew Shaw, McKenna Long and Aldridge LLP (On behalf of Calfrac and Talisman); Jim Elliott, Spilman Thomas & Battle, PLLC; Brian Woodard, Chesapeake Energy; Angie Burckhalter, Devon Energy; Wyatt Boutwell, Vicki Cooper & Associates (On behalf of the Association of Energy Service Companies); Gretchen Kern, Pioneer Natural Resources; Kristen Lingley, EnCana Oil & Gas (USA) Inc.; Kari Gibson, ConocoPhillips; Andrew McNeil, Kentucky Oil and Gas Association; Rudy Vogt, CV Resources (Kentucky Oil and Gas Association); Sarah Gainer, Chesapeake Energy; Mike Smith, QEP Resources; Puneet Verma, Chevron; Doug Jordan, Southwestern Energy; Gerri Edens, BakerHostetler ; Chris Marraro, BakerHostetler; Greg Washington, Chevron; Luke Johnson, Brownstein Hyatt Farber Schrek, LLP (on behalf of Noble); Penny Seiple, Ohio Oil and Gas Association

10/27/2014 Information about ELG rulemaking for UOG Grady McCallie, North Carolina Conservation Network; Lisa Biddle, EPA

11/12/2014 API meeting - Update on status of ELG rulemaking for UOG and CWT study Bob Sandilos, Chevron; Frank Lyon, Newpark; Poh Boon Ung, BP; Lindsay Bass, XTO; Kiran Srinivasan, Hess; Amy Emmert, API; Roxana Herrera, BP; Fernando Sierra, Shell; Stephanie Olson, Marathon; Jenny Yang, Conoco Phillips; Lisa Biddle, Jesse Pritts, EPA

12/8/2014 Clean Water Action - Update on ELG rulemaking for UOG Jesse Pritts, Lisa Biddle, EPA; John Noel, Jennifer Peters, Clean Water Action

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