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IVRCS ~ <br />Natural Rasaureee Canservatlon Service <br />Bdghtm Service Canter <br />57 W. Bmmby Lena <br />Brighton, Cdaado 806013025 <br />January 23, 2006 <br />tara.e ~.., o....ae.,aa oa w.+ortaa.~. Lta wt tit ert/~s <br />3Q3-6`$7004 - Olfiu <br />303d5~1 T6B - Fsx <br />vnvw.rn.uadagw <br />RECEIVED <br />State of Cobrado <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />JAN 2 52006 <br />ivhion of Minerals aad Geology <br />Attn: Erica S. Crosby, Environmemal Protection Specialist <br />Subject: Hall-Irwin, Parker-Dersham Resource, File No. M-2006-003 <br />The West Adams Soil Conservffiion District has requested assistance from our agency in <br />reviewing the subject proposed Mining and Reclamation Permit application to mine sand and <br />gravel near Brighton, Colorado. Reclamffiion of the site will be completed to reclaim the <br />affected lands to municipai water storage reservov and upland pasture. We have the following <br />continents a~ recommendffiions on this applicffiion. <br />ILeclamaHon Plan <br />Water Storaee Reservoir <br />It is recorrmtended that the final reservoir slopes be no steeper than 3:1, and preferably less steep <br />such as 4:1 or 5: 1, to permit eventual use of the reclaimed water storage reservoirs by wildlife. <br />Steep slopes such as 3:1 can discourage wildlife from approaching and using the water reservoir. <br />Topsoil <br />The NRCS recommends that topsoil stockpiled for reclamation be segregated from other spoil. <br />The topsoil and overburden stockpiles should be graded with final slopes no steeper than 4H:1 V. <br />Slopes that are less steep allow easier maintenance, are less susceptible to water erosion and <br />more readily establish grass protective cover. <br />It is highly recorrarrended that topsoil aad overburden stockpiled over 30 days be seeded <br />immediately as weather permits to protect it. The immediate seeding of these stockpiles should <br />be done to avoid soil erosion from wind and water, as well as from a weed standpoim. Weeds <br />are very invasive and move onto disttubed areas very quickly. Some of these can be noxious <br />weeds and require control based on the state noxious weed list. Through immediate seeding to <br />promote temporary cover, the opportunity for wend invasion will be less, as will the potential for <br />erosion. For seeding the stockpiles, Luna pubescent wheffigrass and/or Amur intermediffie <br />the rLeed Reraurtes Comanaclan LMce Provide's kadarshlp in a partneMlp eNert to Mlp peopN <br />ceree've, maMWn, and lmprae our nad,ral refouroes and environment <br />