2007-09-11_REVISION - M1997054 (2)

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Reclamation Plan EXHIBIT E ~~ The currently approved reclamation plan includes open space and dry land pasture consistent with pre-mining land use and existing adjacent lands. This amendment proposes to change the reclamation plan for both the sand and gravel mining area and the granite quarry to be empty water storage vessels.l T~saiCd anc~-granel-reclamation-will-include a lined, sealed empty h~1e with 3H:1 V stable Js de slopes. The granite water storage side slopes will consist of benched mining-higTwal s as discussed below. It is the operator's intent to find an end user for the site to utilize the empty reservoirs. SAND AND GRAVEL RECLAMATION The proposed reclamation plan includes a clay liner to meet the State's criteria for a lined water storage reservoir. The proposed liner design includes an approximately 15-ft high dam in the southeast corner, with a 4-6-ft raised embankment along the southern embankment. The dam crest elevation is proposed to be 5800 feet. This proposed reservoir layout, extending to bedrock, would result in a future storage volume of approximately 3,790 acre-feet. The proposed liner design includes lining the side slopes and 1/3 of the pit bottom with on-site clayey sandstone and shale. The pit bottom contains three bedrock formations. The bedrock for the western 2/3 of the pit bottom is the clayey sandstone and shale formation, Geotechnical testing was performed by JA Cesare & Associates in 2006. The results of that testing gives reason to believe that this material will sufficiently seal a reservoir to meet the State's standards. Final Land Use Area acres) Lined, em ty reservoir 94 Access Roads 3 Reclaimed Pastureland or Undisturbed Land (in Disturbance Limit) 78 TOTAL 175 The currently proposed liner consists of a 15-ft wide clay blanket to be constructed with O.SH:1 V side slopes and placed along the mining highwall. The clay liner will be keyed into the bedrock. Design specifications and quality control procedures will be used during construction of the clay liner to meet that the State Engineer's Office (SEO) performance standazds for permeability. During reclamation activities, the clay liner will be monitored for compliance with the SEO performance standard for seepage. The top elevation of the clay blanket is proposed to be 5797 feet, allowing three feet of freeboard. The shell material to be placed along the clay blanket will be crusher fines from the granite quarry. Geotechnical testing concluded the fines appear well suited for the stable, well-draining, protective cover for the liner. The final slopes of the embanlanent aze proposed to be 3H:1 V. Reclamation of the liner and reservoir embanlnnents will be concurrent with mining, with reclamation activities following approximately 1,000 feet behind the mining operation. Since reclamation will be concurrent with mining, most soil, overburden, and bedrock material excavated during current mining will be used almost immediately in the previous phase. Scrapers will be used to place bedrock sandstone and shale, as well as the granite fines, along the Front Range Aggregates, LLC- Parkda[e Quorry OMG 7 J2 Permit Amendment Page /9