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On August 12, 2010 at 6:30 hrs, Sanjel rigged up, ran in the hole and tagged the top of <br />cement at a depth of 1183 ft. The fourth cement lift consisted of 53 sacks of Type "G" <br />cement with 0.7% CFR and 2% calcium chloride, resulting in 10.86 bbls of 15.8 ppg <br />cement with a 1.15 ft3/sack yield. This calculated to approximately 704 feet of lift. After <br />pumping the cement down hole, the coiled tubing was pulled up to a depth of 479 feet <br />and the remaining cement was displaced out of it. Some fluid returns to the surface were <br />noted at this time. The cement was allowed to harden while a truck was sent to retrieve <br />more cement. At 9:30 hrs the coiled tubing was tripped in to a depth of 469 feet without <br />tagging the top of cement to prevent plugging the tubing with unhardened cement. <br />The fifth and final batch of cement consisted of 30 sacks of Type III cement with 0.5% <br />CFR and 2% calcium chloride, resulting in 7.32 bbls of 14.6 ppg cement with a 1.37 <br />ft3/sack yield. This calculated to approximately 479 feet of lift. After pumping the <br />cement down hole, fluid and cement returns were noted at the surface and were collected <br />by a vacuum truck. Sanjel pulled the tubing to surface and cleaned the remaining cement <br />from the CTU before leaving location at 10:30 hrs on August 12, 2010. The final cement <br />plug top was tagged at 0.75 ft below ground level at 19:00 hrs on August 12, 2010. <br />Conclusion <br />The Natural Soda, Inc. hydrologic and subsidence monitoring well 93-2M was <br />successfully plugged and abandoned on August 12, 2010. The casing was perforated <br />between the depths of 1212-1215 ft and 1230-1233 ft prior to plugging in order to ensure <br />a good annular seal between the Perched and A-Groove Aquifers. A total of 239 sacks of <br />Type "G" and 30 sacks of Type III cement were pumped down hole to plug it from a <br />depth of 1898 ft (top of the CIBP) to 0.75 ft from ground level (see Figure 1). The <br />remaining surface casing will be cut off below surface and a dry hole marker will be <br />welded on prior to reclamation of the pad. <br />Daub & Associates, Inc. Page 3 of 4 93-2M Plug and Abandonment Report