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rmit No. COG-50000 <br />aciliry No. COG500312 <br />CDMG No. M-82-036 <br />Page 1 <br />~~ <br />J <br />CERTIFICATION <br />AUTHORI7.ATION TO DISCHARGE UNDER THE <br />CDPS INDUSTRIAL GENERAL PERMIT <br />FOR SAND AND GRAVEL MINING AND PROCESSING GENERAL PERMIT <br />Category 07, Sub-category IA -General Permits, Sand and Gravel-Process Water & Stormwater <br />Sic. code 1440 Sand and gravel mining, washing, crushing screening and stockpiling. <br />Current fee $125/year per CRS 25-8-502 <br />This permit specifically authori<es, <br />with the facility contact of, <br />Seneca Coal Company <br />G. Brad Brown <br />Drawer D <br />Hayden, Colorado 81639 <br />(970)+276-3707 <br />Dennis Jones <br />(970)+276-5109 <br />to discharge from facilities identified as the Mesa Gravel pit, located in the SE 1/4, Section 18, T6M R87W, Routt county, as <br />shown in figure 1 of the permit, from Discharge Point(s) identified as 001, as shotivn in figure 2 of the permit and further <br />identified and described in this table, <br />r~ <br />Discharge .. <br />.....Point Description and treatment Estimated <br />Flow Rate <br />001 Discharge from the settling basin prior to entering unnamed tributary to Sage Avg. = 84 gpm <br />The discharge is to Segment l2 of the Yampa River Sub-basin, found in Classiftcations and Numeric Standards for the Upper <br />Colorado River Basin, Regulation 33 (5 CCR 1002-33), as amended July 14, 1997. This segment has been classified for the <br />following uses: Recreation, Class 2; Aquatic Life, Class 2 (Cold); Agriculture. <br />Salinity (!DS) monitoring of the discharge Lv{jj be required. <br />Phosphorus monitoring of the discharge will not be required. <br />Anridegradation review does not apply ra this permit. New loading is less than 10% of the existing loading of the receiving <br />waters because no tivater quality standard parameters other than pH are expected. <br />At the time of application, the permittee certified that they had developed and implemented a Stormwater Management Plan <br />(SWMP) for this facility. As a condition of this permit, a copy of the SWMP must be provided to the Division upon request. <br />the permiaee is encouraged to read the genera! rationale for an understanding of how this permit was developed and read the <br />permit to see what requirements have changed since the last renewal. In the permit, effluent /imitations are specified in Pans <br />/. B. and /. C and monitoring/reporting requirements are specified in Part I.D; special noti ficarion requirements for effluent <br />violations are addressed in Part /I.A. <br />All correspondence relative to this facility should reference the specific facility number,COG500312. <br />Effective OCT 1 - 1997 Expires SEP 3 0 2002 <br />Tom Boyce <br />September 19, 1997 <br />This facility permit contains 26 pages. ~ s _ _ Z ~ c.L ~ <br />