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_ The TDS at the No Name site (S5) which is downstream of the last sediment pond, <br />was observed to vary from 186 to 2230 mg/1. Most concentrations of TDS from the <br />No Name site were greater than 1000 mg/l. Similar concentrations were also <br />• <br />observed for the downstream No Name site, S9, which is located approximately one <br />mile downstream of site S5. Roads were the only disturbance in No Name drainage <br />until 1979. The TSS in No Name has varied considerably during the last four <br />years. A significant difference between the two No Name sites has been observed. <br />Additional load entering No Name Gulch between the two sites probably caused the <br />higher concentrations downstream on 3/07/80. The lowest pH which was observed in <br />the surface water from the two No Name sites was 6.7. Total iron and manganese <br />concentrations have varied considerably in the surface water in No Name Gulch. <br />Some of the results for the No Name sites in Table 4.8-8 are probably representa- <br />tive of baseline conditions. Table 4.8-9 gives the concentrations from samples <br />which were taken from the settling reservoirs. Results are given for No Name <br />reservoirs 2 and 4. Concentrations in the No Name reservoirs are similar to the <br />values measured at the surface water sites. <br />Several analyses of constituents for the Yampa (S7) and Williams Fork Rivers <br />(S10) are presented in Table 4.8-8. TDS of these two major streams does riot <br />fluctuate over as large a range as the Trapper Mine ephemeral drainages. <br />4-218 <br />MISED FFA 1 -; 'R7 <br />