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WATER QUALITY SITE ASSESSMENT TABLE FOR DDRW - Tracy - Subsistence Warehouse <br /> Soils <br /> O O OO ® OO © 8 Oe ps <br /> Site Background Beneficial Use Higher of Site Soils Site Soils Background Attenuation Attenuation <br /> Ground Water Ground Water Numerical Columns Extract Leachate Soils Extract Required to Required to <br /> Concentration Concentration Limits 2 and 3 Concentration Concentration Concentration Protect Protect <br /> Inµg/I inµg/I Inµg/I inµg/I in µg/I extract Inµg/I In µg/I extract Background Beneficial Uses <br /> Constituent avg./std. dev. <br /> avg./std. dev. <br /> Arsenic 5 5 5 5 79 Hi 790 50 158 158 <br /> n = 10 50 Low 500 50 100 100' <br /> 57 Ave 570 50 114 114 <br /> 58 Med 580 50 116 116 <br /> Lead 55.59 15 15 4080 Hi 40800 55 7299 2720 <br /> n = 100 55 Low 550 55 98 37 <br /> 478 Ave 4780 55 855 318 <br /> 120 Med 1200 55 215 80 <br />