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Finally, water quality analyses performed on samples obtained at the Seneca II shop well • (STCS) for this year were compared against both human health (mandatory) and secondary (i .e., recommended but not mandatory) drinking water standazds developed for ground water by the CDDH. No human health standards were exceeded. The CDOH secondary standard fox sulfate, 250 mg/1, was exceeded twice with values of 480 and 410 mg/1. Well STCS has historically exhibited higher sulfate concentrations than the secondary drinking water standard for this pazame tar. However, bottled water is consumed at Seneca II. Ground Water Quality Summary. TDS values at eleven out o£ the nineteen wells sampled the year displayed increasing TDS trends. TDS trends at all other walla were ei thez level oz decreasing. CDOH agricultural ground water standards for pH, fluoride, iron, and manganese were exceedetl a[ certain monitoring wells. Nan-CDOH recommended standards for sulfates and TDS were also exceeded. In the area surrounding Seneca II, grountl water is not being pumped for irrigation oz livestock watering purposes, nor has the CDOH classified any aquifer in this region'for any use. The above discussion ie provided only to serve as a comparative basis to judge ground water quality. Domestic wells that provide drinking water foi local residents are not from aquifers impacted by mining. • Surface Water Table 7 liata pertinent information on all NPDES, stream, and spring monitoring sites at the Seneca II Mine. A complete description of the surface orates monitoring program may be found on Pages 7-336 to 7-355 of the Seneca II PAP. NPDES Discharge Points 002, 003, 004, and OOB were monitored weekly for field parameters (flow, temperature, pH, and electrical conductivity) and monthly for NPDES parameters. 004 and OOB were monitored monthly only in the winter. Monitoring frequenry changes for 002, 004, and OOB went into effect on September 1, 1999 (see ^Introduction"). Stream Monitoring Sites 1, 2, and 5 are monitored for field parameters monthly from March through October. All of these sites, as well as Site 3, are sampled three times a year for full-suite water quality. The firs[ sample of the year is collected during the spring runoff (March or April), the second sample is collected after the spring runoff (May or June), and the third sample is collected during base flow conditions (September). Full-suite lab samples collected at all these sites were analyzed using the surface water long lie t, Table S. The two stream monitors on Fish Creek (Sites 11 and 13) and the two on Fish Creek tributaries (Si tea 10 and 12), are • monitored monthly from May through September for field parameters and full-suite lab 10