Laserfiche WebLink
<br /> <br />sump and the pregnant pond leak detection sump. Secondary <br />recovery systems should underlie the entire heap leach as there <br />is the likely possibility for a hole in the primary 1in~er from <br />earth moving equipment and erosion of the secondary soil liner. <br />D. An Emergency Pond Or Spillway Must Be Constructed In The <br />Heap Leach Area To Protect The Rito Seco. <br />Battle Mountain should implement a design for a series <br />of spillway structures or an emergency pond to control the <br />release of solutions from the heap leach and ponds according to <br />Point No. 40 of MLRD. Battle Mountain's response is that such <br />spill control measures are unnecessary. The San Luis Feroject <br />heap leach ponds will be constructed in an arroyo within the 100- <br />year flood plain of a tributary to the Rito Seco and therefore an <br />emergency pond and spillways must be constructed for the cyanide <br />solutions. <br />E. Battle Mountain Must Test The Heap Leach Pond Sediments <br />For Cyanide Concentration Prior To Disposal. <br />Battle Mountain's response to Point No. 42 suggested <br />that there will be no significant sediment accumulation in the <br />ponds. However, if sedimentation accumulates, Battle Mountain <br />committed to removing the pond sediment and disposing of the <br />sediment in the active areas of the leach pad. Battle Mountain <br />must be required to test the sediment materials to ensure that <br />-16- <br />