ARCHIVED REPORTS_FIRST QUARTER 2011 STATUS SUMMARY REPORT

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Attachment B Historical Groundwater Monitoring Results Former Tosco Bulk Terminal,3505 Navy Drive,Stockton,California 0 Date of etb I- total De lh to caein Dw WELL Sampling/ iPNG TPH-0 benzene toluene benzene xylenes MTBE DIPE ETRE TAME Ten methanol ethanol 607 ElewOon(a) Elevation-(b- b) ID Monitann (µ91L) 149IL) (V91L) (µ91L) (µ91L1 (µ91L) (991L) (P91L) (49IL) (Palo (V9IL) (µ9/L) (µ91L) Ifeeb Neet tush Ileel) Cammenis MWb 082)/0) _ _ _ _ _ _ _ _ DRY - 11/fOro) - 11.75 8.10 1D.70 -105 1131 -tab 0MV08 _ _ _ _ _ _ _ _ _ _ 11.59 -194 11106/08 _ _ _ _ _ _ _ _ _ _ _ 11.52 -1.87 02ro9/09 11.08 -1.43 05107/09 _ _ _ _ _ _ _ _ _ _ _ 10.67 -1.02 11I1b09 9.8] - 02/Ov1D 10.47 4.80 05106/10 10.32 -0.65 DOM0110 1138 _1.69 IM3/10 - - - _ _ _ _ _ _ _ _ 11.19 d.52 owl 8111 1032 -0.65 MW-> 0101193 NO<50 ND<50 ND<0.50 ND<0.50 ND<0.50 NO<0.50 - - _ _ _ _ _ 926 304 432 0610453 ND<50 ND<50 ND<0.50 ND<0.50 ND<0.50 NNO.50 - - _ _ _ _ _ 934 290 092853 NO<50 ND<50 NNO.50 NDa0.50 ND<0.50 NNO.50 - - _ - _ _ _ t1.52 A.µ8 1MV93 ND<50 ND<50 ND<OSO NNO.50 ND-0.50 ND<D.50 - - - _ _ - - 11.82 2.56 03MbV94 ND<50 ND<50 NNO.50 ND<0.50 ND<0.50 ND<0.50 _ _ _ _ - - _ 10.34 -)3D %ro3194 NO<50 ND<50 NO<0.50 ND<0.50 ND<D.50 ND<O.SO - - - _ _ _ _ 1031 ,70) 0928/94 ND<50 ND<SO ND<0.50 ND<D.50 NNO.50 NO<0.50 - - _ _ _ _ _ 11.48 A.µ4 12.02/96 ND<59 ND<50 NNO.50 NNO.50 NNO.50 ND<0.50 - - _ _ _ _ _ 11.0) 2.03 039155 ND<50 63 NNO.50 ND<0.50 ND<050 ND<0.50 - - _ _ _ _ _ 8.30 5.26 0 mm6 ND<50 68 NO<0.50 ND-0.50 NNO.50 ND-0.50 _ - _ _ _ _ - pBp -6]B 11,01/95 ND<50 ND<50 ND<0.50 ND<0.50 NNO.50 ND<1.0 NDQe - - _ _ _ - Ilao -0,56 OW1456 NO<50 60 ND<0,50 NOat NDq NDq ND-10 - - _ _ _ _ 6.88 5.84 05/14196 6D 60<50 ND<O.50 ND<1 Nb<1 NDq NNIO - - - _ _ _ 9.30 A.3µ 09110/90 ND60 ND<50 ND<0.50 NO<1A ND<1.0 ND<1.0 ND<10 - - - _ _ - 10.03 2.99 e 11211% ND<50 ND11N ND<0.50 ND<1a ND<ta NDa19 NO<10 - - _ - 10,71 -].W MWA 03101/93 ND<50 ND<50 ND<0.50 ND<0.50 NNO.50 ND<0.5D - - - _ - - _ 9.55 3.11 Green 08104/93 ND<50 200 NNO.50 NNO.50 ND<0.50 ND<0.50 - - - _ _ _ _ 1030 4 2Aµ .19 inbereal 092853 ND<50 1100 ND<0,50 ND<0.50 6D<0.50 ND-0.50 - - - - - - - 11.90 4.79 5-25' 1210253 ND<50 810 ND<O.SD NNO.50 NO<0.50 ND-0.50 - - _ - - - _ 11.91 2.60 0304194 ND<SO 230 ND<0.50 NO<0.50 NNO.50 ND<0.50 _ _ _ _ _ _ - 1D.6] .7,56 0sm0 ND<50 110 ND<050 NO<0.50 ND-0.50 ND<050 - - - _ _ - _ 11.20 4.09 09/2&94 ND<50 300 ND-0.50 ND-0.50 NNO.50 ND<0.50 - - _ - - - _ 11.88 4.)) 12AL94 ND60 450 NNO.50 ND-0.50 ND<0.50 ND<0.50 - - - - _ _ _ 11.41 A.3D 0391195 NNSD 280 ND<0.50 ND-0.50 ND<0.50 NO<0.50 - - _ - _ _ _ 8.89 638 %10255 ND<5D 210 ND<0.50 ND<0.50 NO<O 50 NO-0.50 - - _ - _ _ _ 10.52 -0.41 11101195 1600 130 t 25 ND<25 ND<25 ND<50 1400D - - _ _ _ _ 1229 -9,18 OV44198 13006D ND<2 NNS ND<5 ND<5 2100 - - _ _ _ _ 8.64 2.53 051110% 2000 90 NNO.50 NO-1 ND<1 ND<1 4900 - _ - _ _ _ 9.89 4,78 09/101% 550 160 ND<0.50 ND<1a NO Ia ND<1.0 t00% - _ - - _ - 10.75 -7.64 11211% 6500 100 ND<2.5 ND<5.0 ND<5.0 ND6SX 1500 - _ _ _ _ _ 11 a A.11 04/16197 67DD ND-100 ND<2.5 NNSA ND-5.D ND-i0 11000 - _ - _ _ - 10.13 -7.02 o8ro65] _ _ _ _ _ _ _ _ 10.)8 -7.68 08,0719) ND<50 500 ND<D.50 NO Ie ND<1a N00.0 4.200 olnY a 5,600 370 NNO.50 NO I.D N I.a ND<ta 1,600 - - _ _ _ _ 9,p0 6.89 071101% ID,OOD 100 ND<0.50 ND<1.0 M.1.0 ND<1.0 9,400 - _ - _ _ - 9.80 2.57 09/1758 3,300 130 ND<0.50 ND<l.0 No-.0 NO-1.0 3.000 - _ _ _ _ _ 10.78 -).8) Imams 15.000 67 ND<1.0 ND<1.0 ND<1a ND-1.0 I3000 - _ - - _ - 9.20 2.1) 0211659 16,000 ND<1,0 ND<1.0 ND<1.0 ND<1.0 ND00 19,00D - _ _ _ _ _ 10.75 -1.64 069059 26,00 ND<100 ND e ND<5.0 ND<5a ND<5.0 2Z00o - _ _ _ _ _ 10.70 -7.59 0BQ759 54 ND<200 ND Ie 6D 1.0 ND<ta NOLO laom - - _ _ _ _ 12,02 2.91 123/99 ND<200 ND<350 NO<0.3 ND<0.3 ND<03 NO<0.6 69,000 - - _ _ _ _ 14.95 O -11.84 Dviazo0@ 04MM 1,800 ND<47 ND<0.50 ND<0.50 NDa0.5D ND<0.50 39.000 - _ '99.6) -8.50 -7.45 -].45 11ConacoPnipSlTenoneh mE Buk%nhV001]6kcpon\iNnQ011\i9Aas 1 to 5 mEFpp B C 1086 Page 9 0f 18