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COLORADO <br /> Division of Water Resources <br /> Department of Natural Resources <br /> May 28, 2020 <br /> Randy Hendrix <br /> Hendrix Wai Engineering, Inc., <br /> PO Box 4487 <br /> Parker, CO 80134 <br /> RE: GP Aggregates West Farm Pit Substitute Water Supply Plan <br /> DRMS-M-2008-078 <br /> Sections 33 ft 28, T22S, R46W, 6th PM <br /> Water Division 2, Water District 67, Prowers County <br /> SWSP ID 5121, WDI D 6707828 <br /> Approval Period: May 1, 2020 through April 30, 2021 <br /> Contact Information for Mr. Hendrix: 720-930-4360; randy@hendrix-wai.com <br /> Dear Mr. Hendrix; <br /> We have reviewed your letter of January 21, 2020 requesting renewal of the above referenced <br /> substitute water supply plan ("SWSP") for a sand and gravel pit to be operated by GP Aggregates, LLC <br /> ("GP Aggregates" or "Applicant") in accordance with C.R.S. 537-90-137(11). The mine is permitted <br /> with the Division of Reclamation, Mining, and Safety under Permit No. M-2008-078. The required fee of <br /> $257 (receipt no. 3696516) has been submitted. <br /> SWSP Operation <br /> This plan seeks to replace depletions resulting from mining operations at the West Farm Pit. The mine <br /> is located in Prowers County in the S1/2 of the SE1/4 of Section 28 and the NE1/4 and the NW1/4 of <br /> Section 33, Township 22 South, Range 46 West of the 6th RM. Depletions from the mining operations <br /> include evaporative losses from the dewatering trench, settling pond, moisture content, dust control <br /> and product washing. Depletions from the mining operations have been fully replaced under LAWMA's <br /> augmentation plan originally decreed in Case No. 02CW181. The evaporative losses from the <br /> dewatering trench, settling pond and moisture content will be augmented under this SWSP, while the <br /> dust control and aggregate washing will continue to be augmented under LAWMA's plan. <br /> Depletions <br /> GP Aggregates operates a dry-mining gravel pit. The pit has an installed liner, which was approved by <br /> this office, the Division of Water Resources ("DWR"). Dewatering trenches keep the water table <br /> down, and are used throughout the site. The water removed by the dewatering trenches is collected <br /> in a settling pond. Once the sediments are no longer suspended, the water is pumped into a lateral <br /> and delivered back to the Arkansas River. <br /> .0 <br /> 1313 Sherman Street, Room 821, Denver, CO 80203 P 303.866.3581 ®col ra o® ov/ ater � <br /> Jared S. Polis, Governor I Dan Gibbs, Executive Director I Kevin G. Rein, State Engineer/Director 14 <br />