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Table 4-5
<br /> Validated Metal Analytical Data-Groundwater
<br /> Tracy Tire Fire
<br /> e orted in t
<br /> Analyte MCL2 MCL EPA PRG' TT-MW-1 TT-MW-10 TT-MW-2 TT-MW-3 TT-MW4
<br /> (California) (Federal) (Tap Water) duplicate
<br /> TT-MW-1
<br /> Aluminum 1,000/200*" 50 to 200* 36,000 74,600 69,800 155,000 9,430 44,200
<br /> Antimony 6 6 15 7.9(J)s 5.9(J) 6(J) 6.8(J) 7.8(J)
<br /> Arsenic 50 50/5* 0.045 28.2 28.7 51.6 4.5 19.2
<br /> Barium 1,000 2,0002,600 1,430 1,230 2,810 231 810
<br /> Beryllium 4 4 73 2 2.3 6.5 <2.0 1.7(J)
<br /> Cadmium 5 5 18 1 (J) <2.0 2.2 <2.0 <2.0
<br /> Calcium na na na 150,000 161,000 309,000 145,000 168,000
<br /> Chromium 50 100 na 203 189 366 26 101
<br /> Cobalt na na 2,200 65 61.5 144 7.6(J) 34.2
<br /> Copper 1,300/1,000* 1,300/1,000* 1,400 134 117 250 19.4 67.4
<br /> Iron 300* 300* 11,000 112,000(J) 102,000(J) 215,000(J) 13,600(J) 64,400(J)
<br /> Lead 15 15 na 36(J) 31.6(J) 84.6(J) <3.0 14.5 (J)
<br /> Magnesium na na na 73,400(J) 71,900(J) 128,000(J) 46,000(J) 58,500(J)
<br /> Manganese 50* 50* 880 3,880 3,770 7,730 615(J) 1,760(J)
<br /> Mercury 2 2 11 0.26(J) 0.32(J) 0.12(J) <0.5 0.61
<br /> Nickel 100 na 730219 203 490 26.3 121
<br /> Potassium na nana 21,400 21,600 50,800 8,160 17,900
<br /> Selenium 50 50 180 4.7(J) <5.0 <5.0 7.5 <5.0
<br /> Silver 100* 100* 180 914 819 927 244 521
<br /> Sodium na na na 92,600(J) 93,900(J) 128,000(J) 135,000(J) 121,000(J)
<br /> rEEPA
<br /> 2 2 2.4 <10.0 <10.0 <10.0 <10.0 <10.0
<br /> na na 260 169 156 293 24.5 98.5
<br /> 5,000* 5,000* 11,000 271 252 634 55.9 161
<br /> grams per liter (J)=Estimated concentration
<br /> mum Contaminant Level for drinking water <#=Analyte concentration is below stated reporting limit
<br /> egion 9 Preliminary Remediation Goals 7na=not applicable
<br /> MCL old=indicates that the detected anal es are above action levels
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