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• COLGRADO ~LPe1R17•!E[7T U}' }iE:1LTl': <br />6'a ter Quality Control llivision <br />4210 East 11th Avenue <br />Denver, Colorado 80220 <br />RATIONALE <br />AMENDMENT 113 <br />BLUE RIBBON COAL COMPANY <br />BLUE RIBBON MINE <br />PERMIT NUMBER CO-0033553 <br />DELTA COUNTY <br />By letter of October 13, 1987, the permittee has requested a permit amendment <br />to reflect the current status of the facility. It is being reclaimed and <br />• therefore, eligible for post-mining effluent limitations. <br />Regrading was completed during the summer of 1986 and revegetation began that <br />fall. Three ponds and outfalls, 001, 002 and 003, remain. All are surface <br />runoff ponds. <br />EFFLUENT LIMITATIONS, RATIONALE AND MONITORING FREQUENCIES: <br />Surface runoff discharges from reclamation areas are eligible for the <br />iimilaei..~s s::o~a ir. _able 1. <br />Table 1 <br />Monitoring <br />Parameter Limitation Rationale Frequency <br /> <br /> <br /> <br />Uil ana ~reasc, iw~i li <br />., <br />y ___ -~ <br />-'- <br />Settleable Solids, (ml/1) 0.5* BAT 3/ `for,rhly <br />Total Dissolved Solids Monitoring only Colo. River Quarterly <br />(mg/1) Salinity Standards <br />1/ Colorado 1later Quality Standards <br />2/ State Effluent Standards <br />• 3/ Federal Best Available Technology Economically Achievable <br />'~ See discussion below <br />