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system these leachate results from the coarse and fine refuse should provide <br />• an adequate characterization of that material as well. <br />We propose to use a clarifying agent, Percol 725(155), a product of <br />Allied Colloids, to facilitate removal of fines from the fines slurry (Figure <br />II.A-3). Approximately 7 lbs/hr of this material will be added to the fines <br />slurry as indicated in Figure II.A-3. Percol 725(]55) is a copolymer of <br />acrylamide and sodium acrylite. The polymer is nontoxic. Trace amounts of <br />the unreacted monomer, acrylamide, which is toxic (USEPA FR 45:33132), are <br />present with the polymer. Dewatering of mine refuse and the dilution of these <br />trace amounts in the fines slurry will greatly reduce the amount of acrylamide <br />in the stowed waste. <br />Grass radiological analyses of slurry and the coarse refuse leachate <br />showed alpha levels of 0 ± 7 pCi/R in the slurry and 1 ± 2 pCi/e in the <br />• coarse refuse and beta levels of 9 ± 7 pCi/A in the slurry and 6 + 2 pCi/A <br />in the coarse refuse. <br />• <br />19 <br />