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INTRODUCTION <br /> Mining has been conducted on this site since before 1976, with operations being continuous <br /> since then. Asphalt Paving Co. ("APC") is amending the 112c reclamation permit for its Ralston <br /> Quarry(M-1974-086)to incorporate additional area and address remediation of a slide in 2018. <br /> The existing permit area of approximately 271.61 acres is located in Jefferson County. The <br /> operation is accessed via a private access road that connects to State Highway 93,to the east of <br /> the operation. It is approximately 3.5 miles north of Golden, CO, in Jefferson County. The site, <br /> in relation to Golden and Arvada, is shown on Map B-1. <br /> The mining operation is in a basalt formation overlaying uplifted Pierre shale. Topographically, <br /> the permit area encompasses a singular ridge of the basalt separating a pair of reservoirs. The <br /> disturbed area for the Ralston Quarry includes all of the mining area, berms, and roads. The <br /> permit and affected area are one and the same. <br /> The permittee and operator for this site is Asphalt Paving Co. Asphalt Paving Co. leases the <br /> entire property from Keller Family Limited Partnership, LLLP. Property lines obtained from the <br /> property owner are shown on Map C-1. <br /> An amendment approved in 1994 expanded the operation slightly. <br /> The 2015 amendment set the current post mining land use of rangeland and water storage. <br /> In 2018, a material slide took place on the outslope west of the quarry area. This slide, and its <br /> subsequent clean up, has been incorporated into the permit by this amendment, submitted in <br /> early 2019. This slide area was outside of the existing mining area. This amendment also adds a <br /> significant flat area to the southwest portion of the permit area for stockpiling and equipment <br /> storage/maintenance, but no mining. <br /> The site will be reclaimed to a land use of a water reservoir and rangeland. The topography of <br /> the reclaimed land is shown on Map F-1. All maps are found in Appendix 4. <br /> Ralston Quarry CM 1c icki and Associates,PLIA' <br /> January 2019 i-1 <br />