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<br />2) What is the estimated time frame for which seven acres of CKD would be exposed without an <br />interim cap? The production estimates included in the report seem to indicate that <br />approximately 7 acres of CKD would be disposed of within the pit, and then an annual <br />interim capping would take place of the acreage in question. DMG suggests that no greater <br />volume of CKD than is exposed at the site at this time, should be exposed at any one time in <br />the future without an interim cap, since levels of the contaminants of concern (thallium and <br />selenium) are currently within acceptable standards in Pond A. Continued monitoring of <br />Pond A for changes in these levels, and inclusion of a monitoring plan for the pond, is also <br />suggested. <br />Please submit a technical revision to your permit by November 19, 1999. If you have any further <br />questions, please contact me at (303) 866-3567. <br />Sincerely, <br /> <br />Christina L. Kamnikar <br />Environmental Protection Specialist <br />Cc: Carl B. Mount, DMG <br />H. Bruce Humphries, DMG <br />Harry H. Posey, DMG <br />Paul Banks, Banks & Gesso <br />St. Vrain Community Watch Dogs Group <br />