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No impact to alluvial groundwater in Oak Creek was anticipated and no groundwater monitoring was <br />conducted. <br />A spring and seep survey is performed annually in May covering the base of the ridge along Trout <br />Creek from the northern Moffat boundary to the base of West Ridge. The parameters used for surface <br />water monitoring sites are analyzed to characterize the type of flow, with the exception of TSS. Of the <br />12 springs and 5 seeps either damp or flowing, all 12 springs and 5 seeps exhibited sufficient discharge <br />for flow to be estimated and field parameters measured during the 2009 monitoring period. The <br />parameters of the seeps and springs monitored were within the acceptable range. <br />Two discharges at the Edna Mine are regulated by the Colorado Discharge Permit System permit <br />number CO-0032638. The two NPDES outfalls at the Edna Mine discharged routinely during 2009. <br />DMP 004A and DMP 007A did not exceed compliance criteria. <br />Please feel free to contact me with any questions at (303) 866-3567 ext. 8134. <br />Sincerely, <br />Jason Musick <br />Environmental Protection Specialist <br />cc: Troy Summers, WWC Engineering, 611 Skyline Road, Laramie, WY 82070