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<br />Dafe: <br />orrice: <br />April 14, 1987 <br />Production & Quality Services <br />~er-0ttice CorresG III I II I II I II IIII III <br />TO Mr. Paul Thomsen <br />From G. E. Hall <br />sub;ect~. Colorado Lien Sludge <br />~~~~ <br />We have completed the analytical work that was requested on a <br />sample of effluent from the Colorado Lien Company. The analyses <br />were done by Atomic Absorption and in accordance with the EPA-E~ <br />Toxicity Procedure. None of the elements appear to approach <br />the threshold limit set down by the EPA. If you have any ques- <br />tions please call. <br /> EP TOXICITY PROCEDURE (ppm) <br /> <br /> EP Maximum <br /> RL 87-111 Concentration <br /> <br />As .003 5.0 <br />Ba .66 100.0 <br />Cd .03 1.0 <br />Cr .10 5.0 <br />Pb .98 5.0 <br />Hg .005 0.2 <br />Se .004 1.0 <br />Ag .O1 5.0 <br />GEH/lck <br />cc: R. L. Stienmier <br />R. R. McGilvray <br />L. M. Meyer <br />EXHIBIT 5 <br />