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iii iiiiiiiiiiiiiiii 999 blue ribbon COCt~ company ~, 'Ta ~,, ~i~ri l_• . ..~ blue ribbon coal company p.o. box 58 delta, Colorado 81416 (3031 8747561 Sandy Squire, Engineering Technician Colorado Department of Health, WQCD 4210 East 11th Ave. Denver, CO 8022G Re: CD PS Permit ;k CO-0033553 Dear Miss Squire Rpril 5, 1985 (( ~;.i'vi:~UJ . iJ In response to your letter Dated March 22, 1985, further information and a proposed solution is being submitted .concerning the excess total iron discharged From outFall point 001 during the last quarter of 1984. When the permit was issued in September 1982, concern was expressed to the division over the more restrictive total iron at outfall point 001 than at 002 and 003. The reason given was the high design discharge of the pond compared to tte potential low flow in Hubbard Creek. Total iron has been a problem since. Lately the iron levels have been worse than usual. After this last reporting Further invest- igation was done to determine the source. The mine discharge is the major inflow into the pond but recently springs were found contributing water. Water samples were taken from the mine discharge, the springs and the 001 discharge. The attached analysis form shows very little iron from the mine water compared to the spring or the pond discharge. With the discharge even higher we believe that the spring sampled as well as springs with higher iron content are the cause of the high iron discharge. These springs are inside the pond and can not be easily diverted around the discharge point. Attached is a letter to Robert Shuttle of the permits station requesting changes in our CDPS permit that should take care of the problem. The First proposed change is to remove the mine water From the pond toaallow longer settling and oxidation times for the springs. The second proposed change is raising the total iron limits due to design changes made in the pond. If there any further questions, I can be contacted at 929-5911 or 856-6402. Yours truly, ./ ~ ,~--~ D/~,~~ Larr~M. Reschke, Mine Engineer Enc. 6~Y'Ql:p, F~rs~.~f t .y~:. i iO,~ cc: Henry Sarb, Powderhorn Coal Co.