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• 4.8.1.5a Operational Surface Water Quality. 1981-1988 <br />Seven operational surface water sites have been sampled during the years 1981-198e. These <br />sites are labeled NPDES 001 through 003 and NPDES 005 through 008 and are given on Map <br />M52. The samples were analyzed for a maximum of approximately 25 parameters. The results <br />of the analysis are given in Table 4.8-8a. Sites 001, 002, 005, 007 and 008 will be discussed <br />further. Table 4.8-8b lists NPDES sites and their associated drainage. <br />Site 001 is located in Johnson Gulch. The maximum flow measured from 1981 through 1988 at <br />001 was 800 GPM. The TDS concentrations generally, as expected, showed a negative <br />correlation with discharge rete, though the relationship shows a lot of scatter. The TDS values <br />ranged from 240 to 2550 mg/I. The average TDS concentration was 1280 mg/l. Conductivity <br />values ranged from 181 to 3100 micromhos/cm. The TSS concentrations ranged from less than <br />1 to 1520 mg/I. These concentrations have a poor positive correlation with discharge. The <br />parameters showed no increasing or decreasing trends, when taking discharge into account, <br />during the period analyzed. pH remained fairly steady during this period; however, a slight <br />increase in pH occurred from 1985 to the present. The pH remained well within the acceptable <br />• limits. <br />Site 002 is located within No Name Gulch. In general, the water quality was similar to that at site <br />001. The average TDS concentration was 1158 mg/I with a range of 385 to 1720 mg/l. <br />Conductivity ranged from 428 to one unusually high value of 8270 micromhos/cm. <br />• 4-222a <br />Pry- 4 <br />MAY 13 1998 <br />