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,.~ ~ ,~ ~ <br />COLORADO DEPARTMENT OF HEALTH, Water Quality Control Division <br />Rationale - Page 4. Permit No. CO-0024562. <br />V. PERFORMANCE HISTORY <br />A. Monitoring Data <br />1. Discharge Monitoring Reports: Tables V-la and V-lb summarize the <br />effluent data reported on the monthly Discharge Monitoring Reports <br />(DNB's) from January 1988 through September 1991. <br />Table V-la -- Self-Monitoring Results Discharge Point 001 <br /> <br />Parameter <br />Violations No. of Samples <br />or Reporting <br /> <br />Periods Reported <br />Concentrations <br /> <br />Avg/ Min/ Max. Previous <br />Permit <br /> <br />Limit No. of <br />Flow, MGD 21 2.26/NA/2.27 2.57 0 <br />TSS, mg/1 21 8/NA /8.5 30/NA/45 0 <br />011 and Grease, 21 NA/NA/0 NA/NA/10 0 <br />mg/1 <br />pH, s.u. 21 NA/7.4/8.24 NA/6.5/9.0 0 <br />Total Recoverable <br />Silver, mg/1 21 0.0009/NA/0.0010 0.0001/NA/0.0002 8 <br />Total Recoverable <br />Zinc, mg/1 21 0.0214/NA/0.0314 0.14/NA/0.28 0 <br />Total Recoverable <br />Cadmium, mg/1 21 k0.005/NA/k0.005* 0.007/NA/0.014 0 <br />Total Recoverable <br />Lead, mg/1 21 k0.005/NA/k0.005 0.08/NA/0.16 0 <br />Total Recoverable <br />Copper, mg/1 21 k0.005/NA/k0.005 0.04/NA/0.08 1 <br />Total Mercury, mg/1 21 k0.0001/NA/k0.0001 0.0001/NA/0.0002 0 <br />* k denotes less than <br />