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1985'/z SOUTH BROADWAY <br /> DAUB & ASSOCIATES, INC. I� GRAND JUNCTION, CO 81507-9649 <br /> (970)254-1224 <br /> FAX(970)242-8438 <br /> email: gjdaub@daubandassociates.com <br /> www.daubandassociates.com <br /> January 24, 2022 <br /> Division of Reclamation, Mining and Safety <br /> Attn: Minerals Division c/o Amy Yeldeil <br /> 1313 Sherman Street, Room 215 <br /> Denver, CO 80203 <br /> Re: Natural Soda LLC Nahcolite Project Permit No. M-1983-194 TR-48 17H-1V SSMW <br /> Adequacy Review #1 Response <br /> Dear Mrs. Yeldell: <br /> In the Adequacy Response #1 letter dated January 20, 2022, the DRMS requested "Please <br /> specify the plugging and abandonment measures to be utilized for 171-1-1 V SSMW." <br /> The 17H-1 V SSMW will be plugged and abandoned as outlined in the procedure below: <br /> 1) Run a 4.5-inch casing scraper to 1,775.6 feet GL, the planned top of the cement plug <br /> 2) Run inside the casing with tremie pipe and cement the casing to surface with <br /> approximately 27.6 bbl of cement. <br /> 3) Cut off the wellhead and casing 3-4 feet below the original surface grade. <br /> 4) Weld a permanent well cap with well name on it to the outermost casing (7.625" <br /> conductor casing), bury the capped well. <br /> 5) Recontour and reclaim the location. <br /> Should you have any questions or comments, please contact me at (970) 254-1224 or <br /> (970) 216-1010 (c), or Kirk Daehling at (970) 456-1268. <br /> Regards, <br /> �• k— <br /> Gerald J. Daub, PG, CPG <br /> President <br /> Daub & Associates, Inc. <br /> Cc: Kirk Daehling <br /> President <br /> Natural Soda LLC <br /> Bill Mills <br /> BLM, White River Field Office <br /> File <br /> SPECIALIZING IN PROFESSIONAL GEOLOGICAL, ENVIRONMENTAL, HYDROLOGICAL, GEOTECHNICAL AND PERMITTING SERVICES <br />