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III. COMMENTS -COMPLIANCE <br />Below are comments on the inspection. The comments include discussion of observations made during <br />the inspection. Comments also describe any enforcement actions taken during the inspection and the <br />facts or evidence supporting the enforcement action. <br />This was a complete inspection of the Edna Mine conducted by Tom Kaldenbach ofthe Colorado Division <br />of Minerals and Geology. No one else was present. More than a foot of snow cover prevented access into <br />the site and, therefore, the inspection was limited to observations made from the perimeter of the site. <br />The Division is reviewing bond release application SL-8 requesting Phases I, II, and III partial bond release <br />for the Goat Trail road and the former conveyor corridor. <br />With the operator's consent, this report was issued from the Denver office. <br />AVAILABILITY OF RECORDS <br />All required records were available at the Routt County Courthouse. The records checklist is attached. <br />SIGNS AND MARKERS <br />Mine i.d. signs were properly displayed at the Oak Creek and west entrances to the permit azea. <br />SUPPORT FACILITIES <br />No problems were evident in the Oak Creek facilities azea. <br />HYDROLOGIC BALANCE <br />To assess the impact of possible spoil spring discharge from the Edna Mine on Trout Creek, I <br />measured field conductivity in the creek upstream and downstream from the Edna Mine (see attached <br />map). Snow cover prevented entry into the mine site, so it was not known if spoil springs were <br />discharging during the inspection. All measurements were made from county road bridge crossings <br />within a 3-hour period on December 12. These measurements indicated Trout Creek was below the <br />1,500 µmhos/cm material damage suspect level for irrigation water at all locations measured. <br />Conductivity values in Trout Creek appeared to be elevated by inflows along the segment of Trout <br />Creek that flows by the Edna Mine (segment 13c of the Yampa River basin). Conductivity (in <br />micromhos/cm) was 150 upstream from the mine, and 570 downstream from the mine. The <br />conductivity measurements indicate the creek's water probably was below the instream sulfate standazd <br />of 250 mg/1 applicable on lower Trout Creek (segment 13a of the Yampa River basin). <br />SLIDES AND DAMAGE <br />Reclaimed slopes in the Moffat, Center Ridge, and West Ridge azeas were observed from County Road <br />29; no problems were evident, although snow cover limited inspection. The Goat Trail and former <br />conveyor corridor were observed from Highway 131. Slopes appeazed stable. <br />3 <br />