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. ~r <br /> <br />•R. G. SOTTO & AnnSSOCIAT~ <br />C7nv~ron1nrnla~ l:anau ~lanfa <br />1040 NORTH CALVERT STREET <br />BALTIMORE, MARYLAND 21202 <br />EFFECTS OF <br />RUNOFF OR SEEPAGE FROM THE <br />SCHWARTZWALDER MINE WASTE ROCK PILES <br />ON THE <br />WATER QUALITY OF RALSTON CREEK <br />JEFFERSON COUNTY, COLORADO <br />Prepared For <br />COTTER CORPORATION <br />LAKEWOOD, COLORADO <br />by <br />Robert G. Otto, Ph.D. <br />Baltimore, Maryland <br />Decembes, 1984 <br />III III III IIIIIII III <br />,csr , <br />,o:+l <br />