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T~ <br />y <br />III IIIIIIIIIIIII II~ <br />STATE OF COLORPLuv <br />Bill Owens, Governor <br />Jane E. Norton, Executive DireQOr <br />Dedicated to protecting and improving the health and environment olthe people olColorado <br />4300 Cherry Creek Dr. 5. Laboratory and Radiation Services Division <br />Denver, Colorado 80246-1530 8700 Lowry Blvd. <br />Phone (303) 692-2000 Denver CO 60230-6926 <br />TDD Line (303) 691.7700 (3031 692-3090 <br />Located in Glendale, Colorado <br />http://www.cdphe.state.co. us <br />July 20, 2000 <br />Allen S. Weaver, Mine Engineer <br />Energy Fuels Coal Inc. <br />f 190 County Road 95 <br />Florence, Colorado 81226 <br />RE: Request for Storm Exemption <br />For Outfalls OOIA, 002A and 004A <br />CDPS Permit No. CO-0036595, Fremont County <br />Dear Mr. Weaver: <br />RECEIVED <br />' JUL 2120001. <br />pivision of Minerals 8 Geob99 <br />OF C~ <br />Nc <br />• k <br />R® <br />~ /876 ~ <br />Colorado Department <br />of Public He~lrh <br />and Envirotunent <br />This is in response to your letters dated October 13, 1999 and June 6, 2000, in which you requested a storm <br />exemption for the reported noncompliance effluent limits at Outfalls 001, 002, and 004 in second quarter 1999 which <br />was due to a rain event. Your letters described the condition of the ponds prior to the rain events and precipitation <br />was reported to be 3.74 inches on April 29, 1999 which is greater than the 10-year/24-hour storm volume for the area. <br />Your sediment ponds are designed to Veat and contain a 10-year/24-hour precipitation event. The self-monitoring <br />data you provided on your Discharge Monitoring Report is shown below: <br />Reported Permit <br />Period Outfall Parameter Results Conditions <br />2Q99 OOIA TSS, (mg/I) 59 (30 day avg) 35 (30 day avg) <br />2Q99 OOIA TSS, (mg/I) 122 (daily mx) 70 (daily mx) <br />2Q99 002A TSS, (mg/I) 158 (30 day avg) 35 (30 day avg) <br />2Q99 002A TSS, (mg/I) 158 (daily mx) 70 (daily mx) <br />2099 002A L-on Total 'm n` <br />to •i 7.36 7~ da-~ av- <br />( Y 5) 3.5 30 da av <br />( Y b <br />2Q99 002A Iron, Total (mg/I) 7.36 (daily mx) 7.0 (daily mx) <br />2Q99 004A TSS, (mg/I) 60 (30 day avg) 35 (30 day avg) <br />2Q99 004A TSS, (mg/I) 120 (daily mx) 70 (daily mx) <br />Energy Fuels Coal, Inc. has shown [hat discharge occurred within 48 hours after measurable precipitation and that <br />discharge from the various Outfalls was beyond your control. Therefore, we believe that Energy Fuels Coal, Inc. <br />qualifies for the greater than 10-year/24-hour precipitation alternate limit, thus waiving Total Suspended Solids and <br />To[al Iron limits. <br />If you have any further questions regarding this matter, please contact me at (303) 692-3603. <br />S' cer ly, <br />Carla ]. Lenk <br />Water Quality rotection Section <br />WATER QUALITY CONTROL DIVISION <br />