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4th Quarter 1999 Report (October—December) <br /> Page 2 <br /> American Tunnel Bulkhead <br /> The American Tunnel bulkhead was inspected, gage pressure readings taken, and fluid <br /> samples analyzed for pH, conductivity, and temperature more frequently than the <br /> requirements of Items 3. This information is attached. <br /> Site inspections have not revealed any indication that the bulkhead is performing other <br /> than as designed. <br /> Infection Quantities <br /> In order to maintain a no discharge status from the Terry Tunnel settling ponds, water <br /> was pumped from the ponds through the Terry Tunnel bulkhead pipe into the mine pool. <br /> Alkaline material was not added. The total quantity injected during the 4th quarter was <br /> 0.19 MGallons. <br /> Please contact me if you have any questions on this report. <br /> Sincerely, <br /> t-'��'� <br /> Larry Perino <br /> Reclamation Manager <br /> cc: Sarah Johnson, CDPHE <br /> Wally Erickson, DMG <br /> Allen Sorenson, DMG <br />