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<br /> <br /> <br />dilution. Two this n~z ,` in Drill IIo1c 3 (164.0 - 173.1 a„~ ~$L_.-1~38T.2~ <br />feet) indicated materials with potentia o generating acidic leachate. On ~. <br />tl~~asis of the calculated average pli, and the alkaline nature of F seam waste <br />rock and tkie alkaline nature of the vast majority of B seam materials, leaclt.ate ~ <br />quality that reaches the sedimentation ponds or ground water is expected tc be , <br />in the neutral to alkaline range. ' <br />On the basis of the data available, it is our opinion that placement of B <br />scam waste rock in the lower refuse pile will not result i.n any notice~ible <br />difference to the leachate quality estimated previously for F seam material;; as <br />currently permitted. <br />If you have any questions regarding our evaluations, please contact me. <br />Sincerely , pa,t~n'tnrutnnn,. <br />CeoBest Colden, Inc. .``p:~r~~, F. III~'~. <br />''' ~~'~' <br />/2`~~~ /J :. 2373'' <br />,,• ~_ , <br />i (V ~ <br />Will iain R, bland, P.E. '~%y~f '• ~ 6~~~` <br />g ~igr.~silONnL F-~.0~\`~ <br />6 ' <br />