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Pater Yeer have been compared to these standards, and the comparison results are presented <br />in Table 12. • <br />Table 12 shows that Alluvial Yells 6-A, 32 -A, 33-A, 31-A2, 68-A, and 69-A; Interburden <br />Yell 21-LW1; wolf Creek Overburden Well 7-WCO; and Spoils Yells 25-5, 26-5, 27-5, and 61-5 <br />6~l'l~~ teed-the,:,;3 r~i,'gat'iPdn'~d~ss olved"mangaiiese~sS~e`nd~d~o~f~0.2~_ip'g%jl~ This standard applies <br />to crops grown in soils with pX values lower than 6.0. In soils with a higher pH (as is <br />found in agricultural soils surrounding the Seneca 11 area), a more realistic standard <br />• would be 10 mg/l (EPA, 1976). <br />The irrigation dissolved iron standard of 5.0 mg/l was exceeded et alluvial Wells 32-A <br />end 33-A end wolf Creek Overburden Well 7-WCO. Pater with this iron concentration will <br />precipitate iron oxides on the leaves when the crop is spray-irrigated, but should not 6e <br />a problem for flood irrigation (EPA, 1976). <br />Wedge Underburden Yells BP1-U and 11•U and Wedge Coal well 19-W exceeded the irrigation <br />fluoride standard of 2.0 mg/l. The same three wells also exceeded the irrigation pM <br />standard of 6.5 to 8.5. <br />• <br />Finally, water quality analyses performed on samples obtained at the Seneca I1 production <br />well (Gw-55-TC) during 1994 were compared against both primary and secondary drinking <br />water standards developed for ground water by the CDOH (CDOH, 1986). Sulfates (secondary <br />standard, 250 mg/l) were higher than the CDOX standard: 436 mg/l, November 11, 1993; and <br />403 mg/l, June 20, 1994. Well GW-SS-TC has historically exhibited higher sulfate <br />concentrations than the secondary drinking water standard far this parameter. Also, the <br />same two samples exceeded the secondary standard for iron (0.3 mg/l) with a value of 0.61 <br />and 0.31 mg/l, respectively. mg/l. However, bottled water is consumed at Seneca I1. <br />Ground water Quality Summary. Annual average TDS values at Wells b-A, 31-A 2, 17-w, 7-WCO, <br />27-5, and 62-5 in 1994 were higher than their historic ranges. TDS values at all other <br />wells fell within their historic ranges. CDOH agricultural ground water standards for <br />manganese, iron, fluoride, and pH were exceeded at certain monitoring wells. <br />in the area surrounding Seneca II, ground water is not being pumped for irrigation or <br />livestock watering purposes. The above discussion is provided only to serve as a <br />comparative basis to judge ground water quality. Domestic wells that provide drinking • <br />8 <br />