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1985'Y2 SOUTH BROADWAY <br /> DAUB & ASSOCIATES, INC. GRAND JUNCTION,CO 81507-9649 <br /> (970)254-1224 <br /> FAX(970)242-8438 <br /> email: gjdaub@daubandassociates.com <br /> www.daubandassociates.com <br /> December 12, 2020 F P-- <br /> Mr. Kent Walter OG ! dt r ' 2020 <br /> Bureau of Land Management <br /> 220 East Market Street <br /> Meeker, CO 81641 <br /> Re: Natural Soda LLC Proposed Upgradient Groundwater Monitoring Wells <br /> Dear Mr. Walter: <br /> Natural Soda LLC (NS) proposes to drill three dedicated groundwater monitor wells for the <br /> Perched, A-Groove, and B-Groove Aquifers. These wells will be named PA-1, AG-2, and <br /> BG-10 in reference to the monitored aquifers and will serve to maintain an upgradient <br /> groundwater monitoring location. <br /> The proposed wells will be drilled and completed as dedicated groundwater monitor wells and <br /> will not be cored or utilized for any other purpose. Geophysical logs will be collected to <br /> accurately determine stratigraphic intervals. The surface hole locations will allow for 75-100 foot <br /> spacing between the wells to ensure good cement and no intra-well communication. The <br /> surface location will be large enough to add a DS Aquifer monitoring well if deemed useful. The <br /> deeper wells will be drilled downgradient of the shallower wells. <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 /> ": . L--� <br /> Gerald J. Daub, P.G., C.P.G. <br /> President <br /> Daub &Associates, Inc. <br /> Cc: Kirk Daehling <br /> President <br /> Natural Soda LLC <br /> Amy Yeldell <br /> Colorado Division of Reclamation, Mining and Safety <br /> File <br /> SPECIALIZING IN PROFESSIONAL GEOLOGICAL, ENVIRONMENTAL, HYDROLOGICAL,GEOTECHNICAL AND PERMITTING SERVICES <br />