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y- i~ • • <br />COLORA00 DEPARTMENT OF HEALTH <br />Dedicated to protecting and improvingg the health and <br />environment o(the people o(Colorado <br />4300 Cherry Creek Dr. S. Laboratory Building <br />Dcnver, Colorado 80222-1530 4210 E. 11th Avenue <br />Phone D07I 692-2000 Denver, Colorado 802 2 0-171 6 <br />1307) 691 4700 <br />April 30, 1993 <br />Mr. Thomas S. Hendricks <br />Hendricks Mining Company, Inc. <br />P.O. Box 653 <br />Nederland, Colorado 80466 <br />STATE OF COLORADO <br />RFGENF~ <br />MAR 2 51994 <br />[h:'KY: n CY }(I1t11;Id~,S a Vc.~~t.~,F <br />RE: Delinquent Discharge Monitoring Reports <br />CDPS No.: CO-0032751 <br />Boulder County <br />Dear Mr. Hendricks: <br />OF'~OfO <br />~,`~ 4 <br />~A y <br />:' \\ 8 <br />'orerlc ~ <br />Roy Ramer <br />GovMnw <br />Palncia A Nolan, MD, MPIi <br />Faecutiva Direttor <br />[ have reviewed the list of delinquent Discharge Monitoring Reports per your phone call of April <br />27, 1993. As we discussed on the phone today, it appears that we were in error concerning <br />some of the item. <br />The letter of April 22, 1993 stated that we had not received a DMR for outfall 300[. Yotlr <br />permit does not require influent monitoring be done. Outfall 3001 is the outfall indicator used <br />for influent monitoring. Therefore, you aze no[ required to submit DMRs for this outfall. The <br />letter also stated we had not received DMRs for outfall 0801. This outfall covered the special <br />monitoring required in Part I.B.12 of the permit. The monitoring for hardness was to last one <br />year. It is not clear how long flow monitoring was to take place, however it can be reasoned <br />[hat a year time period was intended. The Division first received data relative to this <br />requirement with the April 1991 DMR. Therefore, we currently have over a year's woRh of <br />hardness data. Per our conversation, you stated that monitoring of the Flow was attempted but <br />because of winter conditions it was not possible to reach the weir and perform measurements. <br />It is my understanding that we will be receiving a written explanation of this in the near future. <br />Once this information is received we will also have a year's worth of flow data. Therefore, the <br />requirement to continue to perform Flow and hardness monitoring is no longer retuired. We <br />would appreciate receiving data, however such submissions will be optional. The Division will <br />evaluate the flow and hardness information submitted so far. This may result m a modification <br />to the effluent limitations or a requirement to perform additional monitoring. [n either case, the <br />permit will be amended and the changes public noticed so that you will he able to comment on <br />them. <br />