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<br />DAUB & ASSOCIATES, INC. )(`- <br />1985 Yz SOUTH BROADWAY <br />GRAND JUNCTION, CO 81507-9649 <br />.(970) 254-1224 <br />FAX (970) 242-8438 <br />email: gjdaub@daubandassociates.com <br />www.daubandassociates.com <br />.July 8, 2010 <br />Mr. Travis Marshall JUL 12 2010 <br />Colorado Division of Reclamation Mining & Safety <br />Grand Junction Field Office GRAND JUNCTION FIELD OFFICE <br />101 South 3rd, Suite 301 01%901 OF <br />RECLAMATIf3I°I MINING & SAFETY <br />Grand Junction, CO 81501 <br />1 <br />Re: Technical Revision to M1983-194 for the 12H-I and 12H-R wells <br />ear Mr. Marshall: <br />Natural Soda, Inc. (NSI) is submitting this technical revision for a new horizontal injection and <br />recovery well pair, 121-1-1 and 12H-R. The new 12H pad will be located due north of the <br />existing 11 H pad. The horizontal well will be approximately 1500 - 1600 feet long. The access <br />will be from the 11 H pad. The BLM has already received the APDs for the two wells. <br />Please find attached: <br />• Check for the filing fee ($175) <br />• Copies of the APDs <br />• Well and pad survey information, including pad layout <br />• Location and vicinity maps <br />• Well construction diagram <br />• Well construction specification table <br />Should you have any questions or comments, please contact me at (970) 254-1224 or (970) <br />216-1010 (c), or Bob Warneke at (970) 878-3674 x14. <br />Regards, <br />J <br />Gerald 7JDaub, PG CPG <br />President <br />Daub & Associates, Inc. <br />Cc: Bob Warneke <br />Executive Director of Manufacturing <br />Natural Soda, Inc. <br />Paul Daggett <br />BLM, White River Field Office <br />SPECIALIZING IN PROFESSIONAL GEOLOGICAL, ENVIRONMENTAL, HYDROLOGICAL, GEOTECHNICAL AND PERMITTING SERVICES