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COLORADO <br /> Division of Water Resources <br /> Department of Natural Resources <br /> July 25, 2024 <br /> Greg Geras <br /> Land Resource Manager <br /> Asphalt Specialties Co., Inc. <br /> 10100 Dallas Street <br /> Henderson, CO 80640 <br /> Re: Chavers Mining Resources Substitute Water Supply Plan (WDID 0202654) <br /> DRMS File No. M-2015-030 (0210488) <br /> E 'h of the SW'/a of Section 18, Twp. 1N, Rng. 66W of the 6th P.M. <br /> Water Division 1, Water Districts 2, Weld County <br /> SWSP ID: 5057 <br /> Approval Period: August 1, 2024 through December 31, 2024 (or July 31, 2025 subject to <br /> Condition No. 1) <br /> Contact Information for Greg Geras: 303-289-8555 and GregG@asphaltspecialties.com <br /> Dear Greg Geras: <br /> This letter is in response to your June 3, 2024 substitute water supply plan ("SWSP") renewal request for a <br /> sand and gravel pit operated by Asphalt Specialties Co., Inc. ("Asphalt Specialties" or "Applicant") in <br /> accordance with section 37-90-137(11), C.R.S. The Applicant shall be responsible for compliance with this <br /> SWSP, but the State Engineer's Office ("SEO") may also pursue the landowner for eventual compliance. <br /> The original plan was approved on August 3, 2016 and was most recently renewed on August 29, 2023. The <br /> required fee of$257 for the SWSP has been paid (receipt no. 10036421). <br /> SWSP Operations <br /> The Chavers Mining Resources site is located in the E 'h of the SW'/a, Section 18, Township 1 North, Range <br /> 66 West of the 6th P.M. (Figure 1, attached). The depletions that result from the mining operation over the <br /> period of this SWSP include evaporation from exposed groundwater,dust suppression,dewatering,concrete <br /> production, and water lost with the mined product. The life expectancy of the Chavers Mining Resources <br /> site is approximately 10 to 12 years, with 3 to 5 years remaining. Approximately 650,000 tons are to be <br /> excavated from the pit each year during the mining operation. <br /> Mining operations will occurin Cells 2, 3, and 4 during this SWSP period. The site is actively being dewatered <br /> to facilitate dry mining. The dewatering water is discharged into a sedimentation pond to settle out fines <br /> and from there into another dewatering trench which discharges to the South Platte River as shown on <br /> attached Figure 2. There is also a concrete production plant on Cell 1 at the site which utilizes groundwater <br /> from the onsite alluvial well, permit no. 80120-F (WDID 0206393). <br /> Well permit no. 80121-F was issued for the gravel pit site in accordance with sections 37-90-137(2) and <br /> (11), C.R.S. A new well permit must be obtained for the well in accordance with section 37-90-137(2) <br /> and this SWSP since the proposed depletions and exposed groundwater surface area exceed the <br /> amounts permitted by permit no. 80121-F. An application currently is pending under receipt no. <br /> 10036481. Any application will be evaluated subsequent to approval of this SWSP. The provisions of section <br /> 37-90-137(2), prohibit the issuance of a permit for a well to be located within 600 feet of any existing well, <br /> unless the State Engineer finds that circumstances so warrant after a hearing in accordance with the <br /> O��C010 <br /> 1313 Sherman Street, Room 821, Denver, CO80203 P 303.866.3581 www.colorado.gov/water <br /> Jared S. Polis, Governor I Dan Gibbs, Executive Director I Jason T. Ullmann, State Engineer/Director I �p <br /> *1R76�` <br />