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COLORADO J C& Division of Water Resources Department of Naturat Resources March 24, 2023 Joshua Oliver Brannan Sand and Gravel Company, LLC 2500 East Brannan Way Denver, CO 80229 Re: Valley's Edge Resource Substitute Water Supply Plan (WDID 0202660) DRMS File No. M-2016-030 (WDID 0210499) SWSP Plan ID: 5868 Section 20, T1 N, R66W of the 6th P.M., Weld County Water Division 1, Water District 2 Approval Period: November 1, 2022 through October 31, 2023 Contact phone number for Joshua Oliver: 303-534-1231 and ioliver@brannanl.com Dear Joshua Oliver: This letter is in response to your September 29, 2022 application requesting renewal of a substitute water supply plan ("SWSP") renewal for a sand and gravel pit operated by Brannan Sand and Gravel ("Brannon" or "Applicant") in accordance with section 37-90-137(11), C.R.S. The Applicant shall be responsible for compliance with this SWSP, but the State Engineer's Office (SEO) may also pursue the landowner, for eventual compliance. The required fee of $257.00 for the Gravel Pit SWSP renewal has been paid (receipt no. 10024607). This plan was most recently renewed on November 1, 2021. SWSP Operations This SWSP seeks to replace depletions resulting from the Valley's Edge Resource Gravel Mine (Figure 1, attached). The Valley's Edge Resource Gravel Mine is located near the City of Brighton in Section 20, Township 1 North, Range 66 West of the 6th P.M. The Applicant commenced mining of the site in June 2017. Lagged depletions that resulted from the past mining operation include evaporation from exposed groundwater. The Applicant does not anticipate any further mining at this time therefore the only new depletions which will occur during this SWSP period are evaporative depletions from exposed groundwater. Depletions for this site will be replaced using effluent water leased from the City of Aurora. According to the DRMS permit, the life expectancy of the Valley's Edge Resource Gravel Mine is less than 20 years. The proposed reclamation of the site is an industrial development, which will require a complete backfill of the site. Backfilling began in August 2022. In accordance with the letter dated April 30, 2010 (attached) from the Colorado Division of Reclamation, Mining, and Safety ("DRMS"), all sand and gravel mining operators must comply with the requirements of the Colorado Reclamation Act and the Mineral Rules and Regulations for the protection of water resources. The April 30, 2010 letter from DRMS requires that you provide information to DRMS to demonstrate you can replace long term injurious stream depletions that result from mining related exposure of groundwater. The DRMS letter identifies four approaches to satisfy this requirement. In accordance with approach nos. 1 and 3, the Applicant has obtained a bond for $873,550 through the DRMS for complete reclamation of the site which, according to the DRMS permit, will require a complete backfill of the site. �w°F Cplo 1311 Sh4rman Strut, Doom 821, berrver, [b 80201 P 303.866_3581 www_colorada_govlwater �e� Jared S. Palls,Governor I Dan Gibbs, Exerutive Director I Kevin G. Rein, State EngineLhr�Dire ctor I * * *1876*