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PERMIT #: M-2004-078 <br />INSPECTOR'S INITIALS: ECS <br />INSPECTION DATE: January 24, 2018 <br />OBSERVATIONS <br />This was an acreage release inspection for the Lupton Lakes site, a 112c sand and gravel quarry permitted by <br />Denver Water and operated by Martin Marietta Materials (MMM). The inspection was conducted by Eric Scott <br />of DBMS. DRMS met onsite with Brad Piede of Denver Water and accompanied him on a tour of the site. <br />AR02, submitted to DRMS on January 17, 2018, requests the release of two areas totaling approximately 2.66 <br />acres. These areas were originally intended to be utilized as injection well sites for groundwater, but were never <br />utilized or otherwise affected by mining. <br />The first area is located east of WCR 27 adjacent to the southeast corner of Pond 1. This area has been <br />developed as a commercial structure by a third party since the mining permit was approved. The second area is <br />located across from the site entrance to the south of WCR 6 and is still in use as agricultural land. Release <br />notices were sent out by DRMS on January 17, 2018. No comments or objections to the release of these areas <br />has been received to -date. DRMS will approve the release of these two unaffected areas and the release will <br />become final 30 days after the decision date if no objections are received. Please make sure that all future maps <br />and submittals to DRMS reflect the new permit boundary and acreage. <br />Within the permit area, mining activity is progressing rapidly and appeared to be in compliance with the <br />approved plan at the time of the inspection. The site appears to be well run and maintained. The slurry wall <br />liner of Pond 1 has been installed and approved by SEO and the excavation has been properly sloped and <br />appears stable. Excavation activity is currently taking place in Pond 2. No problems or issues were noted <br />during this inspection. <br />Inspection Contact Address <br />Brad Piede <br />Denver Water <br />1600 W. 12th Ave, <br />Denver, CO 80204 <br />Page 2 of <br />