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4-39 <br />• program on the lease area since 1977. These records are <br />reproduced in Tables 4.5-7 through 4.5-10. These data were also <br />analyzed from the perspective of OSt4 Regulations 783.17 and a <br />summary of annual and seasonal variations if persented in Table <br />4.5-8. Only the sites relevant to the Munger Canyon Prospect <br />were analyzed in this report. One sample was taken on East <br />Salt Creek below the confluence with Munger Creek. Conductivity <br />was 1,200 micromhos/cm, pH was 8.0, suspended solids content <br />was 368 mg/1, and dissolved solids content was 814 mg/1 for <br />this sample. A water monitoring program is discussed in Section 2.5. <br />4.5.3,4.3 Munger Creek <br />The ephemeral nature of Munger Creek makes it difficult to <br />monitor water quality there. "Grab" samples were taken in <br />March and May, 1980 and results are given in Table 4.5-9. <br />The small number of samples and the variability of data <br />collected does not permit a meaningful analysis of seasonal <br />variations. However, in general, the water quality seems <br />typical of arid and semi-arid, ephemeral stream systems <br />located in marine-deposited, sedimentary environments. Waters <br />are generally basic in nature as evidenced by the high pH <br />values measured at the Munger Canyon sites, and reflect a <br />sulfate-bicarbonate system. Extreme variability in water <br />quality is characteristic of these drainages. Dissolved <br />constituents often reach very high levels, particularly <br />during storm runoff following dry periods or from stagnant or <br />n <br />LJ <br />