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DAUB & ASSOCIATES INC. <br />April 23, 2014 <br />1985'/2 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 />RECENE® <br />Division of Reclamation, Mining and Safety Aria &4 2014 <br />Attn: Minerals Division <br />1313 Sherman Street, Room 215 DMSION OF REMMATION <br />Denver, CO 80203 MININQ" ANL) bw E, 'Y <br />Re: Response to DRMS' Request for Additional Information Regarding Technical <br />Revision 35 to M1983 -194: Natural Soda, Inc. Drilling Activity - Topsoil and <br />Earthwork Volumes <br />This Natural Soda, Inc. (NSI) submission is in response to a DRMS request for <br />information regarding the amount of topsoil and subsoils to be moved during the <br />construction of drill pads, pipelines, and access roads relating to NSI's upcoming well <br />construction activity. The DRMS request for information was contained within the DRMS <br />Preliminary Adequacy Review of TR -35, dated April 16, 2014 and signed by Travis <br />Marshall of the Grand Junction DRMS office. <br />Earthwork (subsoils) for NSI's proposed construction of three production well pairs, two <br />water supply wells, and a maximum of 23 core /monitor wells is projected to have a <br />volume of approximately 45,507 cubic yards (cy). Topsoil volumes for the proposed <br />construction described above are anticipated to amount to approximately 18,734 cy. <br />Minor changes were made to a few of the access road acreages in the table that was <br />attached to the original TR -35 submission packet (no changes were made to pad <br />acreages or well P &A information). Similarly a volume change was made to the <br />Construction Layout Drawing 1 of 3 for the 14H pad. Replacement pages containing the <br />described changes are attached to this submission. <br />Should you have any questions or comments, please contact me at (970) 254 -1224 or <br />(970) 216 -1010 (c), or Bob Warneke at (970) 355 -4590. <br />Regards, <br />Gerald J. Daub, PG, CPG <br />President <br />Daub & Associates, Inc. <br />SPECIALIZING IN PROFESSIONAL GEOLOGICAL, ENVIRONMENTAL, HYDROLOGICAL, GEOTECHNICAL AND PERMITTING SERVICES <br />