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III IIIIIIIIIIIIIIII <br />STATE OF COLORADO <br />Roy Romer, Governor <br />Patti Shwayder, Fxer;.ive Director <br />Dedicated to protecting and improving the health and em•ironment olfhe people of Colorado <br />4300 Cherry Creek Dr. 5. <br />Denver, Colorado 80246-1570 <br />Phone 13031 692-2000 <br />Located in Glendale, Colorado <br />http:llwww.cdphe.ttate.co.us <br />January 5, 1998 <br />Laboratory and Radiation Services Division <br />8100 Lowry Blvd. <br />Denver CO 80 2 2 0-6928 <br />U03) 692-3090 <br />Kimberely A. Wolf <br />Colowyo Coal Company <br />5731 State Highway 13 <br />Meeker. Colorado 81641 <br />RE: Storm Water Exemption <br />CDPS Permit No. COG-850017, Outfall 007 <br />Routt County <br />Dear Ms. Wolf: <br />OF CO/p <br />ti~~ <br />„~// \~~ <br />'revs' <br />Colorado Department <br />of Public Health <br />and Fltvironment <br />~- <br />~~ <br />R~IVfD <br />This letter is response to your letter dated July 23, 1997, in which you reported noncompliance of <br />effluent limits at Outfall 007 due to increasing temperatures from April 1 through April 11, 1997 that <br />caused snowmelt to enter the pond. Provided with your letter was a table indicating daily high and <br />low temperatures taken at Trapper Mining which is within 20 miles of Colowyo. The increased <br />temperatures resulted in a discharge on April 8, 1997 in which TSS limits were exceeded. The self <br />monitoring data you provided on your Discharge Monitoring Report is shown below: <br />Outfall Reported Permit <br />Number Parameter Results Conditions <br />007A TSS (mg/I) 42 (30day avg) 35 (30day avg) <br />Colowyo Coal Company has shown that discharge occurred within 48 hours after pond inflow had <br />stopped. We believe that Colowyo Coal Company qualifies for the alternate limitations provisions of <br />above referenced permit, page 6, Part I, Section B, t,d, for total suspended solids. <br />If you have any further ques~ons regarding this matter, please contact me at (303) 692-3603. <br />S' c~ere~ly,~~ <br />Carla J. Lenk y <br />Water Qualit ontrol Section <br />WATER QUALITY CONTROL DIVISION <br />cc: Local Health Department <br />Jim Chibrito, WQCD, DE <br />MS-3 File <br />