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COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT <br />Water Quality Control Division <br />Rationale - Pnge 2, <br />Permit No. COG-850038 <br />Ill. RECEIVING STREAM <br />A. Identification, Classification and Standards <br />1. IdentiTtcntion: The discharger from this facility go to Ennis Draw, Box Elder Creek and then the South Platte <br />River, which is within Segment 3, Middle South Platte River Sub-basin, South Platte River Basin. <br />2. Clnssihcntion and Antideerndntion Review: Segment 3 is classified jot the following uses: Use Protected; <br />Recreation, Class 2; Aquatic Lije, Class 2 (warm); Agriculture. The Division reviewed this facility on <br />3/13/95, and deternuned that nn nntidegrrulation evaluation was not required because the receiving water is <br />use protected. <br />3. Numeric Standards: The complete lis[ of standards for segment 3 which have been assigned in accordance <br />with the above class cations can be fourul in 3.8.0 Class~carionc and Numeric Standards for the South <br />P[ntte River Basin (S CCR 1002-8J. <br />IV. FAC/LITYAND WASTEWATER TREATMENT DESCRIPTION <br />A. FnciliN Description: This facility has been partially rrclnimrd rind some surfaces are revegetating. Because of <br />incomplete reclamation, nn active mining .status for the purpose ojthic permit will be used. When all areas that <br />drain to sediment pond p2 are revegetated, the permittee can request coverage under the post-mining limitations. <br />No mining is occurring nt this site. Activities are limited to reclamation and Jly ash disposal. <br />8. Bulk Stornee of Diesel (uel. Gasoline. Solvents or other Hazardous Materials: These are noted on page 12 of the <br />application, in appendix A, and on site sketch. <br />C Other Permits: These are listed on pages 5-7 ojthe application. <br />V. TERMS AND CONDITIONS OF PERMIT <br />A. Discharge monitoring point 001 shell be the discharge ojfinal [rented water prior to entering Ennis Draw, Box <br />Elder Creek and then the South Platte River. Effluent [imitnuonc are specified below and in Part /. B. /. aJ and cJ. <br />Table V--] -Effluent Limns for Discharge Poitus 001. <br />Parameter. Limitation Rationale <br />Flow, MGD Report Design Capacity <br />Total Susperuled Solids, mg/P 35/70* n/ Federal BAT <br />Total Iron, mg/P 3.5/7.0* n/ Federal BAT <br />pH, s. u. 6.5-9.0 c/ Water Quality StandarA.c <br />Oil and Crease, mg/P IO 6/ State Efluent Regulations <br />n/ 30-clay average/doily mnximurn <br />b/ Dairy Maximum <br />c/ Minimum-Maximum <br />The discharge nmr be eligible for nn eremptton.fi'om this linti[ntion i% it to demonstrnred that the discharge occurred ac <br />n result of prec~jtitntion less then or equal m the ru:eocinuvl /0 year, 24 hour event. See permit, Part /. B. /.dJ. <br />