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<br />Mr. Michael 5. Savage Page Four <br />June 28, 1985 <br />In the future, after Peerless gains experience with underground <br />mining in this area, a technical revision may be submitted to the <br />Division requesting extraction of pillars in areas with less than <br />300 feet of cover. <br />6. The Division requests that Peerless monitor the Victory No. 3 <br />discharge by welding a stand pipe or other mechanism onto <br />existing pipe in order to assess the ouantity and ouality of the <br />ana potential discnaraes ov the ~oai euicn mine. <br />Response: Peerless will weld a stand pipe onto the existing pipe <br />in order to assess the quantity and quality of the Victory No. 3 <br />discharge. The quality parameters will be the same as those <br />monitored for other discharge points in the permit and adjacent <br />area. Flow from the stand pipe will be measured using a stopwatch <br />and a bucket. The monitoring information will allow accurate <br />evaluation of potential hydrologic impacts associated solely with <br />the proposed Peerless operations. <br />7. The applicant should estimate maximum flows to the sediment pon <br />The disturbed area drainage, Arness/McGriffin ortaT dischar <br />and Coal Gulch ports discharge worst case estimate should a <br />~e incTu ed. The se invent aon shou be resize to accommo a <br />Response: The maximum flows to the sediment pond are set forth <br />in Attachment 2. <br />8. As discussed with Mr. Strid and Mr. Czarnowsky, the existi <br />sediment pond at the site appears to be conducting water throw <br />the bottom or embankment of the pond as evidenced by a drop <br />pond water level, though inf ows are greater than discharge. T <br />Division requests a discussion of where the water is going a <br />how Peerless plans to contain this water. <br />Response: Based upon several field inspections which included a <br />visual check of the embankment structure, we do not feel that any <br />water is being conducted through the embankment of the pond. <br />However, some water may be infiltrating through the base of the <br />pond. Peerless will evaluate this possibility by visual <br />observations and periodic comparison of estimated inflow and <br />outflow rates. If water is infiltrating into the ground, then it <br />undoubtedly finds its way into the coarse unconsolidated material <br />within the Coal Gulch drainage. During the low flow period of <br />late summer, Peerless will visually check the sediment pond <br />bottom and, if indicated, utilize a non-toxic bentonite seal to <br />prevent future infiltration. <br />