Change of Operator--06/11/2013

Past Operator: Chesapeake Operating, Inc/

New Operator: Latigo Oil and Gas, Inc.

1120N21W C NW NE 15322555 LILLIAN 1-11

1120N21W N2 N2 SE 15321168 SALISBURY 1-11

1121N21W NE NW 15321492 SCATES 1-11

1321N21W NE SE SW NE 15322036 NORTON BROTHERS 2-13

1321N21W NE SW 15330011 NORTON BROTHERS 1-13

1421N21W C NW SE 15330048 BAIRD 1-14

1421N21W C W2 15321694 BAIRD 2-14

1421N21W N2 N2 SW NE 15322384 BAIRD 3-14

1521N21W NW SE 15320023 BAIRD 1-15

1521N21W SW NE NE 15321651 BAIRD 2-15

1821N20W SW NE SW 15330046 KEHL UNIT B 1-18

1921N20W E2 SW NW 15330077 HAGAMAN 1

2321N21W C NE 15330084 WATSON 1-23

2421N21W SW NE 15330047 MILLER D UNIT 1

2521N21W C SW 15321547 STEVENS 2

2621N21W C SE 15321131 BELL UN 2-26

2621N21W NE SW 15322725 GRUNEWALD 1-26A