2004-04-23_REVISION - M1980183 - Laserfiche WebLink

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A-M- o ~ Apri122, 2004 RECEIVE Mr. Berhan Keffelew ~p ~j/y~A J•R ENGINEERING l7fR 2 3 `W7 AWestrian Company Division of Minerals and Geology 1313 Sherman St., Rm. 215 Division of Minerals and Oeolopy Denver, CO 80203 RE: Brannan Sand and Gravel Company Pit #29, M-1980-183, Response to NRCS Dear Mr. Keffelew: We aze in receipt of the comments by the Natural Resource Conservation Service (NRCS). The following is our response. Water Storage Reservoir We will maintain the slopes of the reservoir at no steeper than 3:1 as requested. Topsoil We will follow the recommendations set forth by the NRCS for topsoil stockpiling and reseeding. Reclamation Re-Vegetation We will follow the recommendations set forth by the NRCS for re-vegetation. This includes the species as set forth in Table A and weed control. As requested by DMG we aze also submitting a weed control program. Surface and Subsurface Water. Brannan believes that this water storage reservoir will become a significant benefit to the people and water resources of Adams County. The reservoir will provide a dependable water supply in an era of dwindling water resources and storage. The de-watering will not occur until the slurry wall is complete. This will effectively isolate the dewatering from the groundwater, protecting the groundwater levels from drawdown inside the slurry wall. Since there will be no drawdown outside the slurry wall, we expect no impact to the wetlands. The slurry wall technology has become an effective method of preventing injury to water rights and wetlands. Since there will be no connection between the reservoir and the aquifer, there will be no loss of ground water due to the evaporation. The water used to fill the reservoirs will 6020 Greenwood Plazz Boulevard, Greenwood Village, CO 80111 303-740.9393 • Aax: 30372]-9019 • www.jrenginee~ng.wm