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<br />Murari P. Shrestha, Assistant Manager of Engineering <br />Western Fuels-Utah, Inc. <br />CO-0000213. Page 2. <br />We would consider dropping the WET requirements for outfall 007 if the mine water flow is a minor <br />constituent of any discharge, i.e. if surface runoff always constitutes a large percentage of any discharge and <br />you can demonstrate that the combined flow will not be toxic to aquatic life. If you can document this, please <br />let me know as soon as possible. <br />3) The certified operator requirement is not new. The regulation has been in effect for several years. However, <br />we began including the notification paragraph in We rationale somewhat recently to make permittees aware <br />of this obligation. The operator certification program exists to ensure that personnel are qualified to operate <br />and maintain treatment systems and conduct necessary monitoring to verify proper operation, such as that <br />routinely required under your permit. As I mentioned on the phone, you need to contact Sharon Ferdinandsen <br />at (303)+692-3558 to find out what requirements apply to your facility. Please be aware that operator <br />certification is not a direct permit requirement. The Permits and Enforcement Section is not directly involved <br />in operator certification and cannot delete the requirement. <br />4) We will modify section V.B.1. of the rationale to reflect the information in WFC's October 25, 1993, letter. <br />5) The monitoring frequency for outfall 1101 for flow, pH and oil & grease is based on the continuous discharge <br />of spoils spring water, as stated in your application. We relax the frequency to monthly when a discharge <br />consists solely of surface runoff; however, monthly monitoring would not detect potential variations in the <br />discharge quality of process water such as spoils spring water. These tests are inexpensive to perform and <br />good practice to ensure proper operation. <br />6) By this letter, we will defer installation of effluent flow measuring devices for outfalls 002 -006. If you <br />intend to use the bucket and stopwatch method, this will satisfy the permit requirement, providing that this <br />method provides results within ]0°.fi of the actual flow being discharged. <br />Please contact me at (303)+692-3605 if you have questions. ~~ (~,F1~~D <br />S\\incerely, <br />V~~~. <br />Jon C. Kubic <br />Engineering Technician <br />Permits and Enforcement Section <br />WATER QUALITY CONTROL DIVISION <br />xc: Dwain Watson, Field Support Section, WQCD <br />Sharon Fcrdinandcen, Plant Operuor Certification Board, WQCD <br />CO Division of Minerals end Geology, Coel Mining Section <br />Permits Section, EPA <br />local Health Department <br />CEP 19 ` <br />r r.tJ`.OCd\S~GopACj <br />