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<br />VCWV" <br />Northwest Aggregates Inc. MAR 2 9 2010 <br />"WAND Pit" <br />Division of Rsci-zr- t+on, <br />Russ Means Mining and Safety <br />Division of Reclamation Mining & Safety <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />©I c? - ova <br />Russ, in response to your letter dated 3-11-10) <br />?f?,?,.r? : S i eve R <br />Exhibit "B" <br />C) Proposed pit area is in the 100 year flood plain. Static groundwater elevations <br />are typically 5 feet below ground elevations. The 50 foot setback from the edge of <br />the river will be maintained for all mining purposes except the temporary <br />stockpile of topsoil which will be used for reclamation in the fall of 2010. <br />Exhibit "C" <br />E) Mining will begin in the SE corner of permit area and proceed to the NW. No <br />buildings or bulk fuel storage will be on site, no roads other than the existing <br />access road are expected to be built. Access road to be used by haul trucks to <br />remove finished products off site. Crushing and washing of rock products are to <br />be done in process area. <br />G) Existing road is approx. 35 feet wide, haul trucks to remove finished products will <br />travel road. No major improvements are expected to be made. <br />H) Ground water will be encountered at this site. A maximum of 240 million gallons <br />per year will used for mine dewatering purposes and evaporation. Product wash <br />water will be returned to pit. <br />I) Ground water will be used for product washing on site. Water will be pumped <br />from pit then returned for settling. De-watering will occur on site with a sediment <br />pond located on east side of pit (enclosed please find copies of well permit <br />application and discharge permit application). No chemicals will be used on site <br />for sediment control. Site will be graded so that storm water will drain into pit. <br />J) Pit will have a well permit, water from pit will be returned to river causing no <br />injury to existing water rights. <br />K) No refuse or toxic chemicals are expected on site. Should chemicals be <br />encountered, proper containment and disposal will be implemented. No fuel or <br />other chemicals will be stored on site. <br />L) Edges of pit will be graded so that storm water will drain into pit. Slopes for <br />gravel deposits will be graded not steeper than 2:1 with stabilization benches <br />before the placement of overburden and topsoil for reclamation. <br />M) Gravel will be processed on site with portable crushing and washing operations, <br />no chemicals will be used in these operations.