Fort Berthold Indian Reservation

Environmental Assessment Log - Oil and Gas Wells
Date Received Preparer Owner No. of Wells No. of Pads
2/11/2008 Kadrmas, Lee & Jackson Peak Energy Resources, Inc. 3 3 3/27/2008 Kadrmas, Lee & Jackson Peak North Dakota, LLC 6 6 4/7/2008 Kadrmas, Lee & Jackson Peak North Dakota, LLC 6 6
4/24/2008Anderson Environmental Consulting Kodiak Oil & Gas Corporation 3 3
4/24/2008 SWCA Sundance Energy, Inc. 1 1
5/7/2008 SWCA Questar Exploration and Production Company 3 3
6/11/2008 SWCA Zenergy Operating Company, LLC 3 3 6/24/2008 SWCA Lone Star Land and Energy, LLC 7 7 6/25/2008 Kodiak Oil & Gas Corporation Kodiak Oil & Gas Corporation 4 2 8/8/2008 SWCA Sundance Energy, Inc. 11 11 8/22/2008 Kodiak Oil & Gas Corporation Kodiak Oil & Gas Corporation 12 6 9/30/2008 SWCA Zenergy Operating Company, LLC 4 4 10/7/2008 Kodiak Oil & Gas Corporation Kodiak Oil & Gas Corporation 8 5 10/22/2008 Western Plains Consulting, Inc. Petro Hunt, LLC 4 4 1/27/2009 SWCA Sundance Energy, Inc. 8 8 1/27/2009 SWCA Zenergy Operating Company, LLC 4 4 3/10/2009 SWCA Zenergy Operating Company, LLC 1 1 9/25/2009 Kodiak Oil & Gas Corporation Kodiak Oil & Gas Corporation 5 5 9/29/2009 SWCA Simray GP, LLC 4 2 10/12/2009 Kadrmas, Lee & Jackson Marathon Oil Company 3 3 10/12/2009 Kadrmas, Lee & Jackson Marathon Oil Company 4 4 10/14/2009 Kadrmas, Lee & Jackson Peak North Dakota, LLC 8 5 10/14/2009 SWCA Zenergy Operating Company, LLC 5 5 10/14/2009 SWCA Zenergy Operating Company, LLC 5 5 10/14/2009 SWCA Zenergy Operating Company, LLC 8 6 10/29/2009 Kadrmas, Lee & Jackson Petro Hunt, LLC 4 4 11/3/2009 SWCA EOG Resources, Inc. 5 5 11/9/2009 SWCA EOG Resources, Inc. 12 12 11/17/2009 SWCA Zenergy Operating Company, LLC 6 6 11/24/2009 SWCA Zenergy Operating Company, LLC 5 5 12/8/2009 Kodiak Oil & Gas Corporation Kodiak Oil & Gas Corporation 4 2 12/10/2009 SWCA Petro Hunt, LLC 2 1 12/15/2009 SWCA EOG Resources, Inc. 3 3 12/17/2009 SWCA Zenergy Operating Company, LLC 1 1
12/21/2009 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 2 2
12/30/2009 Kadrmas, Lee & Jackson Petro Hunt, LLC 4 4
1/5/2010 Kadrmas, Lee & Jackson Questar Exploration and Production Company 3 3
1/19/2010 SWCA Zenergy Operating Company, LLC 5 5 2/1/2010 SWCA Zenergy Operating Company, LLC 4 4 2/9/2010 SWCA Zenergy Operating Company, LLC 4 4 2/18/2010 PBS&J XTO Energy 10 1 3/17/2010 Kadrmas, Lee & Jackson Marathon Oil Company 2 2 3/23/2010 SWCA Zenergy Operating Company, LLC 5 5 3/26/2010 PBS&J XTO Energy 12 1

1 of 4Date Received Preparer Owner No. of Wells No. of Pads

3/30/2010 PBS&J XTO Energy 1 1 4/1/2010 PBS&J XTO Energy 12 1 4/2/2010 SWCA Zenergy Operating Company, LLC 5 5 4/6/2010 PBS&J XTO Energy 12 1 4/8/2010 PBS&J XTO Energy 1 1 4/9/2010 Kadrmas, Lee & Jackson Spotted Hawk Development 2 2 4/9/2010 SWCA Zenergy Operating Company, LLC 1 1
4/12/2010 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 5 4
4/13/2010 Kadrmas, Lee & Jackson Marathon Oil Company 2 2 4/13/2010 PBS&J XTO Energy 6 1 4/22/2010 SWCA Petro Hunt, LLC 5 3 4/23/2010 Kadrmas, Lee & Jackson Marathon Oil Company 2 1
5/4/2010 Kadrmas, Lee & Jackson Questar Exploration and Production Company 3 3
5/13/2010 SWCA Simray GP, LLC 7 7 5/25/2010 SWCA Zenergy Operating Company, LLC 2 2 6/7/2010 SWCA Simray GP, LLC 2 2 6/11/2010 Kadrmas, Lee & Jackson Peak North Dakota, LLC 16 8 6/21/2010 SWCA Zenergy Operating Company, LLC 1 1 6/29/2010 SWCA Petro Hunt, LLC 3 2 7/1/2010 SWCA Enerplus Resources Corporation 14 7 7/28/2010 SWCA EOG Resources, Inc. 4 4
7/28/2010 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 4 2

7/28/2010 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 2 1
8/2/2010 Kadrmas, Lee & Jackson Peak North Dakota, LLC 11 6 8/5/2010 SWCA Zenergy Operating Company, LLC 5 5 8/16/2010 Kadrmas, Lee & Jackson Marathon Oil Company 2 1 8/23/2010 Kadrmas, Lee & Jackson Marathon Oil Company 2 1 9/1/2010 PBS&J XTO Energy 6 1 10/7/2010 PBS&J XTO Energy 6 1
10/8/2010 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 2 1

10/8/2010 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 2 1
10/8/2010 SWCA Zenergy Operating Company, LLC 4 3 10/13/2010 PBS&J XTO Energy 6 1 10/14/2010 SWCA EOG Resources, Inc. 14 4 10/19/2010 PBS&J XTO Energy 6 1 10/22/2010 Kadrmas, Lee & Jackson Marathon Oil Company 2 1 10/26/2010 PBS&J XTO Energy 6 1 10/27/2010 Kadrmas, Lee & Jackson Petro Hunt, LLC 6 1 11/1/2010 Kadrmas, Lee & Jackson Kodiak Oil & Gas Corporation 4 4 11/2/2010 Kadrmas, Lee & Jackson Kodiak Oil & Gas Corporation 3 3 11/4/2010 Kadrmas, Lee & Jackson Kodiak Oil & Gas Corporation 7 7
11/15/2010 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 6 1
11/16/2010 TEC Inc. Marathon Oil Company 2 1 11/23/2010 PBS&J XTO Energy 6 1

2 of 4Date Received Preparer Owner No. of Wells No. of Pads

11/23/2010 PBS&J XTO Energy 6 1 11/24/2010 SWCA EOG Resources, Inc. 16 5 12/7/2010 PBS&J XTO Energy 6 1 12/7/2010 PBS&J XTO Energy 6 1 12/14/2010 PBS&J XTO Energy 6 1 12/14/2010 PBS&J XTO Energy 6 1 12/23/2010 Kadrmas, Lee & Jackson Marathon Oil Company 1 1 12/23/2010 Kadrmas, Lee & Jackson Marathon Oil Company 4 4 1/6/2011 PBS&J XTO Energy 6 1 1/11/2011 SWCA Enerplus Resources Corporation 20 8 1/19/2011 Kadrmas, Lee & Jackson Marathon Oil Company 1 1 1/20/2011 PBS&J XTO Energy 6 1 1/21/2011 Kadrmas, Lee & Jackson Kodiak Oil & Gas Corporation 16 5 2/17/2011 PBS&J XTO Energy 6 1 2/23/2011 SWCA Petro Hunt, LLC 7 4 4/12/2011 SWCA Petro Hunt, LLC 8 4 4/18/2011 SWCA EOG Resources, Inc. 4 1 5/12/2011 TEC Inc. Marathon Oil Company 7 3
5/13/2011 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 6 3

5/25/2011 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 4 2

6/2/2011 Kadrmas, Lee & Jackson Questar Exploration and Production Company 4 1

6/3/2011 Kadrmas, Lee & Jackson Questar Exploration and Production Company 10 1
6/3/2011 SWCA Enerplus Resources Corporation 12 6 6/29/2011 SWCA Enerplus Resources Corporation 22 7 7/8/2011 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 19 4 7/11/2011 Kadrmas, Lee & Jackson Marathon Oil Company 4 2 7/14/2011 SWCA Slawson Exploration Company 3 1 7/22/2011 Carlson McCain Dakota-3 E&P Company, LLC (Dakota-3) 2 2 8/4/2011 SWCA EOG Resources, Inc. 4 1 8/9/2011 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 4 1 8/9/2011 SWCA Enerplus Resources Corporation 8 2 8/15/2011 SWCA EOG Resources, Inc. 5 2
8/16/2011 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 15 4
8/16/2011 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 4 2 8/19/2011 Kadrmas, Lee & Jackson Kodiak Oil & Gas Corporation 9 3 9/6/2011 SWCA Enerplus Resources Corporation 6 2 9/6/2011 Kadrmas, Lee & Jackson Kodiak Oil & Gas Corporation 12 4 9/7/2011 Kadrmas, Lee & Jackson Kodiak Oil & Gas Corporation 8 4 9/14/2011 Kadrmas, Lee & Jackson Petro Hunt, LLC 9 4 9/29/2011 Kadrmas, Lee & Jackson Petro Hunt, LLC 1 1 10/7/2011 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 1 1 10/11/2011 Kadrmas, Lee & Jackson Petro Hunt, LLC 5 3 10/13/2011 Kadrmas, Lee & Jackson Marathon Oil Company 6 3 10/13/2011 Kadrmas, Lee & Jackson Marathon Oil Company 3 1 10/19/2011 Carlson McCain Dakota-3 E&P Company, LLC (Dakota-3) 1 1 11/1/2011 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 1 1

3 of 4Date Received Preparer Owner No. of Wells No. of Pads

11/4/2011 Kadrmas, Lee & Jackson Questar Exploration and Production Company 12 1

11/8/2011 Kadrmas, Lee & JacksonQuestar Exploration and Production Company 4 1

11/8/2011 Kadrmas, Lee & Jackson Questar Exploration and Production Company 15 1
12/6/2011 SWCA Petro Hunt, LLC 6 1 12/12/2011 SWCA Enerplus Resources Corporation 16 5 12/16/2011 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 16 4 12/28/2011 SWCA Petro Hunt, LLC 12 5 12/30/2011 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 12 1 1/10/2012 SWCA Petro Hunt, LLC 6 2 1/17/2012 SWCA Dakota-3 E&P Company, LLC (Dakota-3) 20 5 1/17/2012 Carlson McCain Dakota-3 E&P Company, LLC (Dakota-3) 7 1 1/17/2012 Carlson McCain Dakota-3 E&P Company, LLC (Dakota-3) 7 1 1/24/2012 SWCA Petro Hunt, LLC 8 4 2/1/2012 SWCA Enerplus Resources Corporation 30 13 2/14/2012 Carlson McCain WPX Energy Williston, LLC 4 1 2/15/2012 Atkins XTO Energy 8 1 2/17/2012 SWCA Petro Hunt, LLC 7 3 3/30/2012 SWCA Petro Hunt, LLC 5 2 4/10/2012 Carlson McCain WPX Energy Williston, LLC 3 3 4/11/2012 SWCA WPX Energy Williston, LLC 3 1
4/11/2012 Kadrmas, Lee & Jackson Questar Exploration and Production Company 4 1
4/16/2012 SWCA Enerplus Resources Corporation 15 4
4/16/2012 Kadrmas, Lee & Jackson Questar Exploration and Production Company 4 1

4/16/2012 Kadrmas, Lee & Jackson Questar Exploration and Production Company 3 1

Total 990 466 Pad Density (wells per pad) = # Wells / # Pads 2

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