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RESPONSE TO DRMS REQUESTS <br /> Request#1: Section 3.4.2- Water Table, Plate 27 <br /> On pages 3 and 4 of Attachment 1, the text refers to an attached Plate 27. The Division could not <br /> find a Plate 27 in either the hard copy or the digital copy of the submittal. Please provide Plate 27. <br /> Response: <br /> Plate 27 (Rev.3) is attached. It shows the measured water levels for each piezometric <br /> completion in the north-east segment of the Cripple Creek mining district. In addition, the <br /> groundwater contours for the bedrock aquifer have been shown on this diagram. Careful <br /> examination of these data indicate that there is lateral flow from west to east in the vicinity of <br /> Grassy Valley where it passes over the edge of the diatreme into the Precambrian rocks that <br /> surround the mining district. <br /> Accordingly, the well pair at GVMW-23 is well positioned to monitor compliance of <br /> groundwater flow and quality at the edge of the project; if any groundwater impacts were <br /> caused by mining activities in Grassy Valley, they would be identified in this location before <br /> emerging in Grassy Creek, or downstream in Beaver Creek. <br /> GVMW-08 is a less usable compliance monitoring point, because there is a strong downward <br /> gradient (100 feet of head loss in 200 vertical feet of separation of the piezometers). This <br /> means that groundwater that passes GVMW-08 does not in general reach the point where <br /> Grassy Creek passes over the bedrock"lip" to the east. <br /> Page 2 of 8 <br />