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GeoScience Services 2263 Kingston Road <br />Grand Junction, CO 81503 <br />(970) 759-6709 <br />NP/AP ratio analyses; there is minimal potential for acid generation not only from the <br />waste piles but also from the ore piles. <br />Summary and Conclusion. In summary, rock samples from the waste and ore piles at <br />the Cotter Mines were collected and submitted to a qualified laboratory and subsequent <br />acid-base accounting analysis conducted to determine the potential for acid mine <br />drainage. The technical evidence based on the uranium mineralogy, pH paste tests, and <br />acid-base accounting analysis clearly shows that acid mine drainage will not occur, and <br />therefore the Cotter Mines JD-6, JD-8, JD-9, and SM-18 should be exempt from the <br />requirements of a Designated Mining Operation. <br />Respectfully <br />~~ ~~-~ <br />Peter M. Kearl <br />GeoScience Services <br />(970) 759-6709 <br />,.r ~ ° .' ~,~y`. <br />h~' r <br />~ ''\ ~' ' <br />~~p ~V'Vt~,~~ <br />r ~.r <br />6~ <br />~ <br />~' la <br /> <br />~~~ <br /> ~_ <br />~~ ~ <br />Q yi <br />'~+ ~ ~ <br />rrt <br />~~ ~ <br /> <br />~3 <br /> <br />,._ s~ <br />,,. ~. <br />References <br />Brodie, M.J., L.M. Broughton, and A. Mace. Robertson, 1991, A conceptual Rock <br />Classification System for Waste Management and a Laboratory Method for ARD <br />6 <br />