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~~teea ~ o~.o~ er 4 NRCS ~ ~~ Nature! Resourceo Canservatlon Servke ~ ,~.4 Brighton Servke Center ~ 57 W. Brond.y l.erre Brighten, Coha'edo 80001025 ~.,~ RECEIVED our z 4 2ooa 303858.7004 - 01tke 303-659.17f>B - fmt vwrw.w.uada8ov August 18, 2004 State of Colorado Division of Minerals and Geology 1313 Sherman Street, Room 215 RECEIVED OCT 13 X04 !/ Denvef, C() 80203 _ pivision of Minerals and Geology Attn: Gregg Squire, En~ onrnental Protection Specialist Subject: Proposed Surface Extraction of Construction Materials and Reclamation, Regulaz (112) Permit Application, Aggregate Ind - WCR, Wattenberg Lakes, File No. M-2004-051 ~- The West Adams Soil Conservation District has requesKed assistance from our agency in reviewing the subject new proposed Mining and Reclamation Permit application to mine sand and gravel on an approximate 245 acres of the 42i acre site near Brighton, Colorado. Reclamation of the site will be completed to reclaim the affected land to municipal water storage reservoirs, upland and wetland areas. We have the following comments and recommendations on this application. Reclatation Plan Topsoil and Overburden Stock~es The NRCS recommends that topsoil stockpiled for reclamation be segregated from other spoil. The topsoil and overburden stockpiles should be graded with final slopes no steeper than 4H:1 V. Slopes that are less steep allow easier maintenance, aze less susceptible to water erosion and more readily establish grass protective cover. It is highly recommended that topsoil and overburden stockpiled over 30 days be seeded immediately as weather permits to protect the soil. 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 are 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 prorrrote temporary cover, the opportunity for weed invasion will be less, as wt71 the potential for erosion. For seeding the stockpiles, Luna pubescent wheatgrass and/or Arnur imermediate wheatgrass are recommended, both of which wr71 establish readily and quickly. This temporary seeding should be done at a rate of 15 total pounds PLS per acre. The llaturel Resources Conservrtlon Service pmvMes leatlcrshlp In a partneMlp eNOrt to help people conferve, maintain, and Improve our natural resource and environment