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State Reg. <br />a Wadge spoil lysimeter chemical data show a Ca-Mg-504 type wafer with <br />slightly alkaline to alkaline pH, very high hardness and dissolved solids; <br />high sulfate, manganese, seleniurri, and nitrate-nitrite; and low SAR. <br />Trace element concentrafions for all other constituents are low. This <br />water is chemically unsuitable for all uses considered in the previous <br />discussions because of elevated selenium, dissolved solids, and nitrote- <br />nitrite concentrations. <br />Comparison of ground wafer quality data in the mine plan area indicates <br />a close resemblence to regional water quality with respect to water type <br />and overall trace meta( concentrations; and potential water use. An <br />initial examination of the water chemistry from disturbed areas show <br />' that impacts to ground water quality have occurred to premined areas. <br />' These impacts will be discussed later in the section on the "Protection of <br />the Hydrologic Balance". <br />Ground wafer quality dafa at the Seneca II permit do not conclusively <br />• show seasonal fluctuations in unconsolidated strata due to the effects of <br />low permeability and lag time between recharge areas and well sites. <br />Variations in water quality do occur, but these variations do not <br />correlate to seasonal fluctuations in wafer levels. It is expected, <br />however, the fluctuations in alluvial and reclaimed spoil aquifers will <br />occur because these materials are closely related to surface water <br />drainage. Unfortunately, the data for fhe alluvial and spoil aquifers are <br />also inconclusive with regard to seasonal fluctuations. Continued data <br />collectin by Seneca Coals, Ltd. will further define possible seasonal <br />fluctuations in ground water quality at the Seneca II Mine. <br />b. Ground Water Availability <br /> <br />2.04.7(1 J(b) Low tronsmissivities and water yielding ability of each of the previously <br />4.05.13(c) mentioned aquifers make the disruption of these water bearing zones <br />insignificant on the regional ground wafer availability. This conclusion is <br />based on: (i) an understanding of the geology of the mine site, (ii) <br />potentiometric surface analysis, and (iii) pump test data. <br />7-43 Revised 5/27/81 <br />