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COLORADO DEPARTMENT OF HEALTH <br />Water Quality Control Division <br />Addendum - Page 5 <br />Permit Number: CO-0027154 <br />EFFLUENT LIMITATIONS: (Cont'd.) <br /> <br />_ .. r~A <br />~~ <br />5~ ` ~ a. ~•:;~L~..,:~~1 Ala <br />H`OT ~'~~ f9G1:~iir1~ bwi <br />3/ In compliance with [he "Regulations for implemention of the Colorado <br />Salinity Standards Through the CDPS Permit Program", the permittee shall <br />sample for salinity in the wastewater effluent on a monthly basis until six <br />samples have been analyzed. Thereafter, monitoring shall continue on a <br />quarterly basis. The Division will review the first six months of data and <br />determine if a waiver of numeric limitations can be granted based on the <br />salt-load to the river being less than one ton/day (or 350 tons/year). If a <br />waiver is not granted, then the permittee has an additional six months to <br />submit a report in accordance with the Salinity Regulations, addressing <br />economic feasab111ty of salt-removal. <br />Compliance with the effluent limitations in Table 2, for discharge point 005 <br />shall begin on January 1, 1984. This date is the time specified by the <br />permittee for discharge to commence from the underground mine. 1'he <br />limitations are designed to become effective at the time when mine discharge <br />goes to pond D or to Foidel Creek if pond D is not used. <br />Since the permit is in effect until December, 1985, and since BAT limitations <br />for coal mines must become effective no later than July 1, 1984, the permit is <br />also being modified to incorporate BAT limits for discharge points 001, 002, <br />003, 004, 006, 007, 008 and 014. Table 3 below shows the appropriate <br />limitations. <br />Table 3 <br />Effluent limitations for discharge points <br />001, 002, 003, 004, 006, 007, 008 and 014 <br />I. During Periods of No Precipitation <br />Parameter <br />Flow (MGD) <br />pH (su) <br />011 and grease (mg/1) <br />Total Iron (mg/1) <br />Total Suspended Solids <br />(mg/1) <br />Salinity 2/ <br />Limitation Rationale <br />N/A Monitoring <br />6.5-9.0 IdQS <br />10.0 SES <br />3.5/7.0 BAT <br />35/70 BPT 1/ <br />Monitoring Co. River Sal. Regs. <br />Monitoring Frequency <br />Weekly <br />Sleekly <br />Weekly <br />Monthly <br />Pfonthly <br />Quarterly <br />II. During Periods of Precipitation Less Than or Equal to the 10 year-24 <br />hour event. <br />Parameter Limitation Rationale Monitoring Frequency <br />Flow (MGD) N/A Monitoring Weekly <br />pH (su) 6.5-9.0 WQS Ideekly <br />Oil and grease (mg/1) 10.0 SES Weekly <br />Settleable Solids .5 BAT Weekly <br />(mg/1) 3/ <br />Salinity 2/ Ponitoring Co. River Sal. Regs. Quarterly <br />