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 OI Dale of I ethyl- total De to to Casing GW WELL Sannon5' TPH6 TPH-0 benzene toluene benzene Pylenes MTBE RIPE ETRE TAME TDA methanol etM1an.I GW Elevation(a) Elevatlon(b) ID Moniimin WWI-) (VgIL) (4g/LI 1491L) (Vaal-) (V91L) (tall-) (4gIL) (99I1.) IygIL) (pnL) IpglL) IPgILI (feet) feet msl (leetl Comments MW-2 02/16/99 18000 550 30 14 X5.0 ND<5.0 ND<5.0 23000 - - - - - - 9.02 -6.38 08/30199 N)125000 NNIN 38 ND<10 ND<10 ND0.0 19000 - - - - - - 9.83 46.99 082759 ND-250 N1<200 14D<5.0 ND<5.0 ND<5.0 ND<5.0 15000 - - - _ - - 10.M -7.70 118359 ND-200 NN350 12 ND<0.3 1m 0.3 ND-0.6 21000 - - - - - - 1030 4A6 OVIaMD 130(k) 1700 26 ND-0.50 ND-0.5D 10010.50 22000 - - - - - am 4.02 042850 law ND47 18 10010.50 ND<0.50 ND<0.50 29000 - - - - - 9.42 4.78 0825100 1400 NO<47 3.5 ND<5.0 ND<5.0 ND<5.0 8700 ND<100 14D<100 ND<1W - - - 1042 -7.83 0925,0o(m) - - - - - - - - - - 1800 - - 10.65 4.01 11/15,10 1300 ND47 26 14 10.50 ND<O.SO 0.51 11000 - - - - - - 10.15 -]51 01/1751 22DW 300 5.89 NN5.0 ND15.0 ND<5.0 40800 - - - - - - 1028 4.81 065551 7M - - - - - 13000 ND<1.0 1.7 44 200 - - to.01 4.3] 08/15101 ND150 0.35 - - - - 14000 ND<to ND40 So 210 PINIO0 ND-4()(X) 10.09 A.I5 no sbeeNna ode, O9/W/01 ND<50 230 D35 ND<0.50 1110.50 ND<0.50 8900 ND4W N olOW ND400o NDe,IWOO No ND<ENON 1065 -0.01 no O-Wenodo, 11011101 ND<50 410 - - - - 7100 1140 ND<40 ND40 ND-400 ND<500 11DOOo00 10,21 4.58 noeh..Wno odor 02111102 ND<2500 110 N13<25 ND25 ND25 11 125 11000 ND<25 11 125 39 ND-250 ND2500 14Da250 8.11 247 no sbeeNno odor OS(YL02 ND<50 180 - - - - 5100 NN40 ND<40 ND40 ND<400 350(a) ND<10000 11.65 8.05 41.60 082152 11000(91 210 NNIOD NNIOO ND-100 ND<100 8500 ND14N NN400 1401400 NO<2000D 290(p) MN100000 10.60 -2.55 11/1452 14D<50 US(0 - - - - 1400 ND<3A I 3.1 3.7 1600 NNION NNW 10.55 4.50 0220103 141�50 580(0 NN42 ND4.2 ND4.2 NO<42 1400 ND4.2 1 D 4.2 14041 6900 MN100D 1001830 9.30 -125 0520103 ND<50 490(t) 1A ND<0.0 NDe0a ND<0.8 460 ND<0.8 2.1 11 7700 NtelOOD 14D<170 9.94 -1.89 08113103 ND<50 ]20(0 NNIS 11D<2.5 ND<2.5 14D2.5 150 14D<2.5 143<2.5 ND<2.5 4900 14D<1000 ND<5000 10.64 -2.59 1=03 56 1100(p ND<0.50 14D<0.5D 14D<0.50 N[teoao 61 14D<0.5D 0.7 1,00.60 3300 ND<1000 ND<10W 10.80 3.75 02/10104 140(0 2m(0 11110aO ND<O.N ND<0.50 ND.1.0 12 N3<1.0 NNO.50 ND<0.50 5700 ND-2W ND20 9.62 -1.57 05WAII 10.37 2.32 O8/16N4 37 740 10010.50 NO-0.0 ND<0.50 141)10.50 8 ND<0.50 0.5 NNO.50 1500 Nl<% ND<5.0 1984 -.79 1129/00 1058 -2.53 OW7M5 190(0 32D(0 ND<0.50 ND-0.50 10010.50 ND4.0 49 ND<0.50 0.87 10110.50 400D ND<5N ND<50 830 473 05/1255 8.93 -0.88 OWO)05 62 310 ND-0.50 ND-0.50 11110.50 ND<1.0 10015.0 ND-5.0 ND15.0 ND Sa 1200 ND-SM N0150O 10.42 -2.37 11130.105 11.59 4.51 =WW ND Wl 180 NO<O.W ND-D.50 10010.50 14'<1.0 2.0 NOq.o ND<0.50 ND<0.50 2200 ND<10.000 1001100 a.W 4.79 05(!0/06 - _ _ - - - _ _ _ _ _ _ _ 8.38 4.33 Oag1106 1`1DQ50 170 ND2.5 NNIS ND2.5 10 2.5 2.8 ND<25 ND2.5 ND2.5 1700 N"O.000 11D<1.300 9.97 -1.92 11116108 _ _ _ _ _ _ _ _ _ _ _ _ _ 10.12 2.07 8226107 ND<50 ND<50 ND-D.50 ND<D.50 10010.50 ND<1.0 12 ND<0.5D ND4.50 ND<0.50 890 ND<SO ND<25D 9.87 -1.82 052957 - - - - - - _ - - - - _ - 10.36 -2.33 002]57 w3zSO 14D<50 ND<950 N[><0.50 ND<0.50 NO<t.11 1A ND<0.50 ND10.50 ND<O.SO 670 N"O,000 ND-250 10.82 237 1160107 10.80 -2.55 03/1958 NIN50 NNSO ND<O.SO 141t<0.50 ND<0.50 ND<16 18 ND1O.5D ND10.50 N0-0,5D 540 ND<10 ND250 9.50 -145 0521108 - - - - _ - - - _ _ _ _ - 10.04 -1.89 0928108 14D<50 180 1.6 ND<0.50 10010.50 Nl>ul5w 420 ND<10 ND-250 10.42 -2.37 11M6M8 ND-50 200 ND<0.50 10010.50 ND-0.50 ND<0.50 1.9 ND<0.50 ND10.50 ND10.N 220 ND110 100250 10.41 2.36 0259109 ND<50 230 ND<950 ND<o.50 ND-0.50 ND<1,0 22 ND<0.50 ND<0.50 ND<0.50 280 14D<100 ND250 9.89 -1.84 0510759 NO-50 280 ND<o.50 NO<0.50 ND4.50 ND<10 26 Wel).50 ND<0.50 ND<950 200 - - 9.44 -1.39 0861109 ND-50 260 ND<Oau) ND<0.50 10010.50 NO<1.0 33 ND<0.50 ND<0.50 ND 0.50 8] NININ ND<250 10.43 809 -2.10 11/1259 14 150 250 10010.50 10010.50 ND<0.50 ND-1.0 2.5 ND-0.543 NO<0.50 ND10.S0 ND-10 ND-100 110250 10.14 -205 OM3110 ND150 20 ND<0.50 ND<0.50 1,0 0.50 ND<1.0 23 111)4.50 14 1050 ND<0.50 45 NO<1N NMSO 9.34 4.25 05M6110 ND40 210 NDOaa ND<0.50 ND<0.50 ND<1.0 2.3 ND<o.N ND<0.50 10010.50 43 11 1100 - 9.19 -1.10 0860110 - - - - - - - _ _ _ - 1035 -216 12AL10 - _ _ _ _ _ _ _ _ _ _ _ _ 10.08 -1.00 OWIN11 I 150 1 260 1 10.50 10.50 10.50 11.0 1 2.1 1 10.50 10.50 10.10 40 1100 1250 1 9.07 4.98 MW4 0&17/87 ND<50 ND<100() NNO.50 NNO.50 - NOc0.50 - - - _ _ _ _ 10.86 329 -7.67 0m258 200 - ND10,50 . NO-0.50 to 1.4 - - - - - - _ - - Imerval 03,08188 - - _ - - - - _ _ _ _ _ - 10.92 4.63 8-25 04/14/8a 11.33 4.04 NOIAM 900 - 7.5 12 5.3 5.7 - - - - - - - 10.75 -7.46 02/89 330 - ND<0.50 1.1 NO<0.50 ND10.N - - - - - - - - 0911852 270 W ND<0.50 11110.50 2.3 2.6 12.43 4.14 flconxaRoipilTemmnekna 9ulx PhntY16013 slxMonITYMM2D111i�1ee1 ro sna PoP a c 1o11.tls Page 3 of 18