ARCHIVED REPORTS_FIRST QUARTER 2011 STATUS SUMMARY REPORT

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Attachment Historical Groundwater Monitoring Results Former Tosco Bulk Terminal,3505 Navy Drive,Stockton, California OI Date of I I ethyl- Intal Depth to Caere, cW WELL 6ampfingl TPH6 TPH-0 benzene lalaene benzene xylenes MTBE DIPE ETBE TAME TBA metbanol etbanoI GW EI-fon lal ElemOon(b) 10 Moniwh (V91L) ("IL) (V91L) (V9/L) (V41L) (491-) (P91L) IV91y (V91L) (V91L) (91L) 1491-) (V9/L) (feet) (feet msl) (feet) Comments MW-1 OmOIN ND<50 37 - - _ - 0.]9 - - - 520 NO<500 ND-50 10.60 -2.51 1124/05 _ _ _ _ _ _ _ _ _ _ _ _ _ 11.23 -3A4 0992106 75 NM50 NNO.50 NDsO.SD ND450 NDs10 0.99 NDs1.0 NDsp,N ND 0.50 59 140s10.00D NDIIN 8.95 4.86 NMOI6 _ _ _ _ _ _ _ _ _ _ _ _ _ 6.56 -0A7 08!31/06 NOs50 NDs5O - - - - 1.5 - - - 490 NDct0.000 ND O 10.00 -1.91 I III Sim - - - - - _ _ _ _ _ _ _ - 1021 -2.12 0226/07 NDs5D KNSO NDs0.5O ND 0.50 NO-0.50 NDs1.O ND-1.D - - - 200 NDs3D ND-= 10.34 425 0529/D7 10.35 226 0827107 NDs5O MDs50 - - - - 0.63 - - _ 230 s10,OW ND250 10.81 422 1113OM7 _ _ _ _ _ _ _ _ _ _ _ - _ t0." 2.55 03/19/08 NDs5O 14 s50 ND-0.50 NDsa.N NDsO.50 NDs1.0 DO NDsOSO NDs0.50 NDsOSO NDs10 NDs10 ND250 9.93 A." 021/0e _ _ _ _ _ _ _ _ _ _ _ _ _ 10.11 3.02 1182808 NDz5D 14 s50 - - - - 0.62 - - - 250 NDs10 NO25D 10.0.5 -226 11106106 10.39 -2.30 02/09/09 NDs50 NDs50 NDsDSO NDsOSO NDsO.N I-Ds1.0 0.82 - - - NDs10 ND-IN NOQ50 9.91 4.82 05107/09 - - - - - - - _ _ _ _ _ _ 921 -1.62 085IM9 ND40 NNSO - - - - NDsO.50 - - - 60 - - 10.39 8 -2.39 11112/09 - - - _ _ _ _ _ _ _ _ _ _ 10.10 2AD OM311D NDs5O 120 NOsO.5D NDc0.50 ND-0.50 NOs1.0 0.52 - - - NOs10 NDs1W NDQ50 9.20 -125 05/06110 9.17 -1.12 08130110 ND50 54 - - _ _ NDs050 - - - N NOs1W NDs250 1021 -221 129-10 - _ _ _ _ _ _ _ _ _ _ _ _ 10.0 2.00 02/16111 1 s50 1 s50 sO.5D s0.50 s0.50 st0 0.58 11 s10 s10 250 6.97 4.97 MW-2 08/1]2] NN50 ND IWO NDsO.50 NDsO.5D - N0sOSO - - - - - _ - 10.57 2.64 -7.93 screen 029986 150 - NDsOSO NDsO.N NDsDSO 96 - - - - - _ _ - _ interval 0310&68 -_ - - _ _ _ _ _ _ _ _ _ _ 10,87 5.03 0-25W/14MB - - - _ _ _ _ _ _ _ _ _ _ 1D.63 A.19 NMIlas 407 - 15 3.0 2.50 4.3 - - - _ _ _ _ 1DA5 -7.61 0989 ISO - 9.5 NDs0.50 NDsO.N ND-0.50 - - - _ _ _ _ - - 00118A2 370 al " 3.1 NOsO.W 5.2 11.01 -9.17 1911192 71 N050 4.6 0.5 NO4.54 KNO.N - - - - - - _ 11.54 4.07 0301/93 840 140 110 2.8 NOs0.50 23 - - - - _ _ _ 0.79 5.15 06104183 270 1100 110 3.7 NO-0.50 17 - - - - - _ _ 9.64 -7.07 0928193 1800 2100 207 34 NOsO.50 20 - - _ _ _ _ _ 1123 6.59 1992,93 530 2100 86 7S NDsO.50 8.8 - - - - - _ _ 1120 48.64 0=4/4 280 860 140 5.6 NDsOSO 14 - - - - - _ - t0.D3 -7.39 06103/9" "0 500 160 3.8 ND-0.50 14 - - - _ _ _ _ 10.57 -7.93 0928/" 34(1 470 120 2.7 NNOSO 4.8 - - - - - _ _ 1120 -0.56 12102/" 160 1200 51 id NDsOSO 4.3 - - _ _ _ _ _ 10.70 4.06 03//1195 320 800 140 3.3 1.4 12 - - - - - - - 8.09 5.45 06A%VN 76 510 28 D.55 ND-0.50 15 - - - _ _ _ _ 9.67 -7.03 11101/95 220 240 ND-0.50 ND-0.50 1.9 5.8 ND<cO - - - - _ _ 11.99 4.35 D01(c) 11101/95 NO - NDsO.50 NNO.50 15 4.5 NDs5.0 - - - _ _ _ _ 02/1496 1600 -0 430 6.8 2.4 27.1 9907 - - _ _ _ _ 8.65 5.01 05/1496 4100 720 120 NDS NO<5 a 63M _ _ _ _ _ _ 9.32 5.88 09/10/96 "0 140 W 11 N0s1.0 6A 32W - - - _ _ _ 9.90 -7.26 1121/96 980D IN 120 5.9 ND5.0 5.5 28000 - - - - - - 12.61 4.97 1001(1) 1121196 2NDD - 140 ND25 N025 ND-25 310W - - - - - - - 04/1697 6107 260 69 NDSA wss5o ND5.0 1700 - - _ - - _ 8.68 5.04 OC4(e) 0411697 NN - 91 ND5.0 Ws5.0 NDs5.0 160W - - - - - - - _ 0810657 10.10 -7.46 06107)9] ND-SN N0000 47 25 N0s1A 5.2 92M - - - - - - - 012398 570M 24N 140 ND5.0 N0s5.0 5.6 5001 - - - - - _ 8.33 5.89 07MOA0 82M 610 1N NDs5.0 NDs5.0 7.7 690M - - - - _ - 8.85 5.01 OC-1(c) 07MM 7907 - NN250 ND-500 NDs500 NNS" 68000 - - - - - - - W/DAB 7300 690 207 55 NNSA 9.1 NOW - - - - _ - 9.91 -727 D 1(c) 09/17,96 WON - 45 12 NDe1.0 1.310010 1931086 20070 440 22 NN5.0 ND S.O NDs5O NOD220N 9.91 -727 rwonocoPn9p:\rermnab.is D.xvl.mnow3 slrcMonlTWM20111rtlez 1 tosma App a c 1D1i m Page 2 of 18