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p <br /> OLORADO <br /> 10-, Division of Water Resources <br /> Department of Natural Resources <br /> December 3, 2019 <br /> Sira Satori, P.H. <br /> Clear Water Solutions <br /> 8010 S. Country Road 5, Suite 105 <br /> Windsor, CO 80528 <br /> Re: NCCI Pit#1 Substitute Water Supply Plan (WDID 0202566) <br /> NCCI Pit#1, M-2001-107 (WDI D 0203016) <br /> Section 24, T 2N, R 67W, 6t" P.M. <br /> Water Division 1, Water District 2, Weld County <br /> SWSP Plan ID 3670 <br /> Approval period: January 1, 2020 through December 31, 2020 <br /> Contact phone number for Sira Sartori, P.H.: 970-223-3706 <br /> Dear Ms. Satori: <br /> We have received your letter of December 10, 2018, requesting renewal of the above-referenced <br /> substitute water supply plan to cover depletions caused by an existing gravel mining operation operated by <br /> Northern Colorado Constructors, Inc. ("NCCI" or"Applicant"). The required fee of$257.00 for the renewal <br /> of this substitute supply plan ("SWSP") has been submitted (receipt no. 3695597). The original supply plan <br /> was approved on December 30, 2002 and the SWSP was most recently renewed on February 21, 2019. <br /> Plan Operation <br /> Mining operations at the NCCI Pit # 1 have ceased. This plan seeks to replace lagged depletions <br /> resulting from past mining operations at the NCCI Pit #1, evaporative losses and depletions from <br /> ongoing dewateri ng. In 2020, the mining operation will consist of 5.96 acres of exposed water surface <br /> area through recharge ditches, sedimentation ponds and dewatering ditches, as shown on attached <br /> Figure 1. <br /> The lagged depletions will be replaced using fully consumable effluent leased from the City of <br /> Thornton ("Thornton"). The NCCI Pit#1 will be lined. <br /> In accordance with the letter dated April 30, 2010 (copy attached) from the Colorado Division of <br /> Reclamation, Mining, and Safety ("DRMS"), all sand and gravel mining operators must comply with the <br /> requirements of the Colorado Reclamation Act and the Mineral Rules and Regulations for the protection <br /> of water resources. The April 30, 2010 letter from DRMS requires that you provide information to DRMS <br /> to demonstrate you can replace long term injurious stream depletions that result from mining related <br /> exposure of ground water. The DRMS letter identifies four approaches to satisfy this requirement. In <br /> accordance with approach no. 3, you have indicated that a bond has been obtained for $1,030,074 that <br /> can cover the cost of lining the NCCI Pit#1 to prevent the exposure of ground water. <br /> Depletions <br /> The exposed ground water surface area is 5.96 acres. Net evaporative depletions were calculated using <br /> a gross annual evaporation of 45 inches from the exposed ground water surface, with a credit of 9.73 <br /> .,Colo <br /> 9d`, <br /> 1313 Sherman Street, Room 821, Denver, CO 80203 P 303.866.3581 www.colorado.gov/water yr ti> O <br /> Jared Polis, Governor I Dan Gibbs, Executive Director Kevin G. Rein,State Engineer/Director <br /> 1876�` <br />