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~~~ <br />• <br /> <br /> <br />ACZ Inc. • • <br />Englnaarlnq arW Emlrontnantal Sarvkp <br />tu3 Pina Grow Road, Saito toe <br />P.O. Rots 774018 <br />StaamOat Spnnga. Colorado 80477 <br />303~e7¢e28p <br />August 20, 1992 <br />Ms. Anne Ihlenfeldt <br />Colorado Department of Health <br />Water Qu~t1 Control Division <br />4210 East 11th Avenue <br />Denier, Colorado 80220.1716 <br />Rc Reported Yolation of CDPS Permit No: COG8S0021 for the Period of Apn1 1 <br />Through June 3Q 1992 <br />Dear Ms Ihlenfeldt: <br />This letter is in response co dour writtat notifiatioq dated Auguut 6, 1992, informing Eerr <br />Coal Company that it was is violation of permit wnditioas for the period of April l through <br />June 30, 1992. You indicated that the following lerreb of coal ntspeaded solids (iSS) were <br />above permit conditions: <br />Outfall Location Parataete: Reported Results <br /> ~n <br />ao4 Tss (ma:) 292 <br /> TSS (avg) 121 <br />nos TSS (ma:) 86 <br />nob Tss (ma:) 190 <br /> TSS (avg) 61 <br />Pamir Coadhiona <br />tags <br />~o <br />ss <br />~o <br />~o <br />3S <br />As you requested, Sur has iaduded with this later the individual T5$ sstsl~sa raula for the <br />period foe samples that were in violation of the mine permit eond'itiom (Fable 1} Note that <br />this table iaduda the aml~sis of TSS in the sanspk colkoued at oudsll loatioa 004 on March <br />s 1, 1992. Although this sample was aolleaed one dad prior to the beginning of ehe referenced <br />monitoring period. the TSS resuh war used in edculatiag the repoeud arrerage T55 kvd for the <br />outfalL <br />Each of the oudaW in vioktIoa of the permit conditions is loured dowttgradiatt of a <br />sedimmtuion pond. The poach were designed to control and mitigate the potential incensed <br />sediment load of surface waters is Gonna with mined area Regular intpeuioa of the ponds <br />b~ Serr personnel indiate that none are esperiendng shorter or are is aa~ wq <br />damaged. S,err bdie.a chat the ekvued TSS kvek measured a< the aadsW see a aaarel <br />oontrreaot and is the ask of Outfi11004 mq also be the enult d the resusltmsion of solids <br />bawem tlu discharge point of the pond sad the downpadimc sampling loodon. put{a11004 <br />is sampled approrimatd~ 100 fat downgradiatc of the pond Darla OutfsW OOHS sad 006 are <br />sampled a: the pond outlets <br />