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exceeded. The secondary standard for iron (0.3 mg/1) was exceeded with <br />values of 4.53 and 8.62 mq/1. The secondary standard for manganese (0.05 <br />mg/1) was exceeded with values of 0.076 and 0.152 mg/1. However, bottled <br />water is consumed at Seneca II-W. Also, since the aquifer for the shop <br />well (Trout Creek Sandstone) starts at 280 feet below the Wadge Coal and <br />is separated by confining shale layers, water from this well should not <br />be affected by mining and, therefore, reflects the natural <br />characteristics of the aquifer. <br />Ground Water Quality Summary. Increasing TDS trends were observed at <br />eight wells downgradient of mining. However, eleven downgradient wells <br />exhibit stable or decreasing TDS trends. TDS values this year were below <br />PHC predicted values for all wells except for WHAL7-2, WOV17 and WW14. <br />Agricultural ground water standards were exceeded this year at certain <br />monitoring wells. Tab 7 of the Seneca II-W PAP contains a section that <br />discusses the suitability of using water from the various aquifers <br />monitored at the Seneca II-W Mine for irrigation or livestock watering. <br />The discussion mentions that all aquifers prior to mining at the Seneca <br />II-W Mine have exhibited several parameter concentrations in excess of <br />both irrigation and livestock standards compared, rendering them <br />questionable regarding their suitability for either irrigation or <br />livestock. All bedrock aquifers affected by mining have been determined <br />to have transmissivities less than 100 ft2/day, which would also <br />preclude their use for yielding sufficient water for irrigation, or even <br />livestock. <br />Surface Water <br />A summary of surface water monitoring sites and sampling history is <br />presented in Table 7. At Seneca IZ-W, all stream Sites (unless otherwise <br />noted) are monitored monthly (excluding November to February) for flow <br />and field parameters (flow, temperature, pH, and electrical <br />conductivity). NPDES Discharge Points 015, 016 and 017 are monitored <br />weekly (when accessible by truck) for flow and pH. All five NPDES sites <br />are monitored monthly for NPDES parameters and field parameters. Samples <br />12 <br />