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Leaching Procedure (TCLP), and for radioactivity. Copies of these analyses <br />• are included in this report. <br />Monthly ash disposal reports, summarizing the disposal activity at the <br />Keenesburg Site, are also found in this Section. <br />Mine Waste Rock Di~osal <br />Subsequent to the submittal of the 1997 AI IR Report CEC received <br />approvals from CDPI-IE, from Weld County, and from CDMG (Minor <br />Revision #34) to proceed with the disposal of mine waste rock at the <br />Keenesburg Mine site. Between September 30`h and December 7`h a total of <br />10,639 tons of mine waste rock were successfully transported from the <br />Idaho Springs, Colorado area and deposited in a single 4± foot layer, <br />extended over a horizontal expanse of 1.38 acres within B-Pit. The mine <br />waste rock is being treated in a manner which will isolate it within layers of <br />ash in the existing disposal pit (B-Pit) to protect against the possibility of <br />contamination. By the close of 1998, the covering ash layer was being <br />advanced over the waste rock with full cover expected during 1999. The <br />• position of this material has been noted on the "Existing Surface Features <br />and Utilities Map". <br /> <br />AHR-1998 -93- Stipulation #24-25 <br />