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• Results of the monitoring program were compared to these stan- dards. The standards were exceeded eight times during the first year of the program (Table 3.3-9). All other values observed during the first year of the program were below standards. Table 3.3-9. CDOH Water Quality Staadarda for the Colorado River Exceeded During the Monitoring Period Parameters Standards Observed Date Concentration Sam led Ca Sum (C ) 0.001 .0011 06 22 copper (col 0.01 0.13 09/22/83 Copper (CU) 0.01 0.055 12/19/83 Iron (Fe, total) 1.0 4.65 06/22/83 Lead (Pb) 0.025 0.067 06/22/83 Manganese (Mn, solo.) 0.05 0.05 09/22/83 Manganese (Mn, solo.) 0.05 0.05 03/27/89 Zinc IZn) 0.07 0.14 06/22/84 It is interesting to note that most of the parameters that exceeded the standards were on a total basis. It suggests that the metals • are being carried on suspended solids. This is evident since on June 21 the flow was 24,100 cfs and carrying 484 mg/1 of suspended solids and four standards were exceeded. On September 22 the flow was 2180 cfs, carrying 6 mg/1 suspended solids and only two standards were exceeded. The copper standard was exceeded on December 19 when there was 5 mg/1 suspended solids. Runoff during the spring of 1983 was at record levels. On June 25, the instantaneous discharge at station 09085100, just below Glenwood Springs, was 27,900 cfs. This flow broke the peak discharge for extremes for the period of record which was 20,500 cfs on June 15, 1973. The Colorado Department of Health, WQCC adopted Regulations for Implementation of the Colorado River Salinity Standard through the NPDES Permit Program on April 3, 1978. The purpose of these regulations is to maintain flow-weighted average annual salinity in . the Lower Colorado River. (Note: Salinity and total dissolved NCEC - Coal Ridge #1 3-43 ABC/1145/900301