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uol6ea s~ nepara~eee of Agrlusl4see 4 MRCS Natural Resources Conservation Service Brighton Service Center 57 W. Brwnley Lane Bdghton, Colorado 806013025 303659-7004 -Office 303659-1768 -Fax www.co.usda.gov June 3, 2004 State of Colorado Division of Minerals and Geology 1313 Sherman Street, Room 215 Denver, CO 80203 Attn: Berhan Keffelew RECEIVED JUN 10 2004 Division of fv9inarals & Geology Subject: Proposed Surface Extraction of Construction Materials and Reclamation, Regulaz (112) Permit Application, Aggregate Industries - WCR, Hazeltine Mine, File No. M-2004-03I The West Adams Soil Conservation District has requested assistance from ow agency in reviewing the subject proposed new Mining and Reclamation Permit application to mine sand and gravel on approximately 135 acres of a 204 acre site. Reclamation of the site will be completed to reclaim the affected land to a municipal lined water storage reservoir.: We have the following comments and recommendations•on.this application. Reclamation Plan Water Storage Reservoir The Reclamation map states that all reservoir final slopes will be reclaimed to a maximum of 3H:1 V. It is recommended that the reservoir slopes be no steeper than 3:1, and preferably less steep such as 4: I or 5:1, to permit eventual use of the reclaimed water storage reservoir by wildlife. Steep slopes such.as 3:1 can discourage wildlife from approaching and using the water body. To soil The Natural Resowces Conservation Service (MRCS) recommends that, as stated on the applicant's mining map, topsoil stockpiled for reclamation be segregated from other spoil. It is highly recommended that topsoil and overburden stockpiled over 30 days be seeded immediately as weather permits to protect it, in lieu of the applicant's proposed seeding after one year. The immediate seeding of these stockpiles should be done to avoid soil erosion from wind and water, as well as from a weed standpoint. Weeds aze very invasive and move onto disturbed areas very• quickly. Some of these can be noxious weeds and require control:based on the state,noxious weed list. Through immediate seeding to promote temporary cover, the opportunity for weed invasion will be less, as will the potential for erosion. The Natural Resources Comervation Service provides leadership in a partnership effort to help people conserve, maintain, and improve our natural resources and environment