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_ ,.:. <br />:., ; <br /> <br />blue <br />cb~bon <br />company <br />~~~~ r. ~l <br />,~~k~'. <br />III IIIIIIIIIIIIIIII <br />999 <br />blue ribbon coal company <br />p.o. box 1352 <br />palisade, Colorado 81526 <br />(303)464-7951 <br />pPR 2 ~ 1986 <br />April 22, 1986 <br />Susan Mowry <br />Reclamation Specialist <br />Colorado Mined Land Reclamation <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 82030-2273 <br />a, p S ~•, <br />~>lc. ~~~", ~ <br />Subject: 1985 Annual Hydrologic Report, File No. C-81-047 <br />Dear Susan: <br />This letter is in response to the questions raised in your response to our <br />1985 Annual Hydrologic Report, April 2, 1986. <br />The following is a table of quarterly average total iron for our discharge <br />from Pond No. 1 since the first of 1983: <br />1983 <br />1984 <br />1985 <br />1986 <br />Quarter T. Fe mg/1 T. Fe mg/1 T. Fe mg/1 <br />1 1.22 0.67 1.35 <br />2 0.71* 0.59 1.60 <br />3 1.06 1.30 1.60 <br />4 0.87 3.55 1.26 <br />*Creek overflow excluded <br />T. Fe mg/1 <br />0.49 <br />The average total iron for the three years in mine discharge was 0.59 mg/1. <br />The one spring sampled in the pond showed 1.39 mg/1 in 2/85. The regular <br />discharge of water from Pond No. 1 started in April 1983 when large mine <br />inflows were pumped into the pond. The initial trend during regular flow <br />was a decrease in total iron. The increase in the fall of 1984 corresponded <br />to the construction work on the bench. During this construction period 9/84 <br />- 10/85 the Pond No. 1 was kept at a low level. Two trends were noted that <br />may have contributed to the elevated total iron - increased spring inflow <br />and increased total suspended solids. Reviewing the well water, which should <br />be similar to spring inflows, and the single pond spring sample, it can be <br />