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PEABODY COAL COMPANY <br />ROCKY MOUNTAIN DIVISION <br />10]79 EA 37 HARVARD AYiNUE <br />sulrc Aoo <br />D[NV[R. COLORADO 00t]1 <br />1!O]1 1D7~9907 <br />April 12, 1985 <br />CERTIFIED MAIL <br />RETURN RECEIPT REQUESTED <br />Ms. Sandra Squire <br />Monitoring and Enforcement Section <br />Water Quality Control Division <br />4210 East 11th Avenue <br />Denver, Colorado 80220 <br />Dear Sandy: <br />RE: NONCOMPLIANCE OF PERMIT CONDITIONS, <br />NPDES PERMIT CO-0037656, <br />MESA GRAVEL PiT, <br />ROUTT COUNTY, COLORADO <br />~ ... D~'.; .~: <br />As a follow-up to my phone conversation with you on Wednesday, I wish <br />to report that a sample taken at the Mesa Gravel Pit discharge monitoring <br />point 001 on March 25, 1985, had a total suspended solids (TSS) concentration <br />of 150 mg/1. This exceeded the effluent limit of 45 mg/1 stipulated <br />in NPDES Permit No. CO-0037656. <br />This exceedance is due to the naturally high TSS concentrations in the <br />spring snowmelt runoff. Peabody Coal personnel are planning to survey <br />the pond to determine whether or not dredging will be needed. Surveying <br />is expected to commence in early June at which time the ground will <br />be dry enough to permit heavy equipment to move on site if required. <br />Please contact me if you hie any questions. <br />Sincerely, <br />,~ ~~ <br />Jay M"ednick <br />Hydrogeologist <br />kmt <br />c: Anne Baldrige, CMLR <br />Slade Dingman <br />Craig Jennings <br />Dennis Jones <br />Steve Martin, OSM <br />Tom Wainwright <br />Don Zulia~ . <br />~ ~ s~ <br />pPR161gQ~ <br />