ARCHIVED REPORTS_GROUNDWATER MONITORING AND REMEDIATION REPORT - 3RD AND 4TH QUARTERS 2011

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TABLE 3 Page 45 of 66 GROUNDWATER DATA SHELL STOCKTON TERMINAL 3515 NAVY DRIVE,STOCKTON,CALIFORNIA MTBE MTBE Depth to GW SPH Well ID Date TPHd TPHg B T E X 8020 8260 TBA DIPE ETBE TAME Ethanol Methanol Lead TOC Water Elea. Thickness DO (Y97L) (Yg7L) (p&1L) (p&/L) 6ig7Ll (N&,T) ()jgAW (arg/L) (Ng7L) (P91L) (P&V (A91L) WIL) (Ng/L) (mg/L) (ftMSL) (ftTOC) (Jt MSW (ft) (mg/L) MW-24 02/03/2010 4,000 d 17,000 B 3,700 64 470 40 r - 82 370 r 18r <100 <100 - <100 ee - 8.74 10.52 -1.78 - 1.33 MW-24 05/06/2010 3,600 d 14,000 4,100 57 580 36 - 93 280 20 r <50 <50 - <100 ee - 8.74 9.95 -1.21 - 0.49 MW-24 08/30/2010 - - - - - - - - - - - - - - - 8.74 11.30 -2.56 - - MW-24 08/31/2010 2700 d 21,000 B 4,600 65 510 44 r - 100 <500 21 r - - - <100 ee - 8.79 - 0.26 MW-24 12/03/2010 3,100 hh 13,000 2,600 65 170 42 - 74 240 r 19r - - - <100 ee - 8.74 11.08 -2.34 - 1.17 MW-24 02/18/2011 3,400 14,000 3,900 70 530 60 - 99 <500 <50 - - - 600 ee - 8.74 10.05 -1.31 - 0.21 MW-24 05/19/2011 - - - - - - - - - - - - - - - 8.74 9.76 -1.02 - - MW-24 05/20/2011 2500 13,000 3,200 74 330 46 r - 91 <500 22 r - - - 600 ee - 8.74 - - - 0.75 MW-24 09/07/2011 - - - - - - - - - - - - - - - - 11.00 - - - MW-24 09/09/2011 2,000 16,000 4,200 78 320 56 - 140 <500 25 r - - - 4,000 ee - - - - - 1.77 MW-24 12/06/2011 4,180 14,000 3,170 n 55.9 131 45.5 - 89.0 <10.0 17.7 - - - 40.0 ee - - 11.39 - - 0.78 MW-25 09/29/1993 0.12 ND ND ND ND ND - - - - - - - - - 4.69 8.28 -3.59 - - MW-25 03/24/1994 ND ND ND ND ND ND - - - - - - - - - 4.69 6.85 -2.16 - - MW-25 06/27/1994 130 ND ND ND ND ND - - - - - - - - - 4.69 7.47 -2.78 - - MW-25 09/27/1994 53 ND ND ND ND ND - - - - - - - - - 4.69 8.04 -3.35 - - MW-25 12/28/1994 93 ND 6.4 0.65 0S4 1.3 - - - - - - - - - 4.69 7.87 -3.18 - - MW-25 03/13/1995 51 ND ND ND ND ND - - - - - - - - - 4.69 4.20 0.49 - - MW-25(D) 03/13/1995 53 ND ND ND ND ND - - - - - - - - - 4.69 - - MW-25 06/15/1995 55 ND ND ND ND ND - - - - - - - 4.69 6.78 -2.09 - - MW-25 09/12/1995 160 140 5.8 8.0 2.9 20 - - - - - - - 4.69 7.78 -3.09 - - MW-25 11/13/1995 75 ND ND ND ND ND - - - - - - - 4.69 8.49 -3.80 - - MW-25(D) 11/15/1995 69 ND ND ND ND ND - - - - - - - - - 4.69 - - - - MW-25 03/20/1996 54 ND ND ND ND ND - - - - - - - 4.69 4.18 0.51 - - MW-25 05/15/1996 89 ND ND ND ND ND - - - - - - - - - 4.69 6.24 -1.55 - - MW-25 08/12/1996 170 ND ND ND ND ND - - - - - - - - - 4.69 7.23 -2.54 MW-25 10/28/19% 120 ND ND ND ND ND - - - - - - - - - 4.69 8.17 -3.48 - - MW-25 03/03/1997 60 ND ND ND ND ND - - - - - - - - - 4.69 5.50 -0.81 - - MW-25 05/05/1997 61 <50 <0.50 <0.50 <0.50 <0.50 - - - - - - - 4.69 6.79 -2.10 - - MW-25 08/18/1997 150 60 <0.50 <0.50 <0.50 <0.50 - - - - - - - - - 4.69 8.49 -3.80 - - MW-25 11/18/1997 110 60 <0.50 <0.50 <0.50 <0.50 - - - - - - - - - 4.69 7.38 -2.69 - - MW-25 03/24/1998 <50 <50 <0.50 <0.50 <0.50 <0.50 - - - - - - - - - 4.69 3.24 1.45 - - MW-25 06/02/1998 60 <50 <0.50 <0.50 <0.50 <0.50 - - - - - - - - - 4.69 5.16 -0.47 MW-25 09/02/1998 152 <50 <0.5D <0.50 <0.50 <0.50 - - - - - 4.69 7.06 -2.37 - - MW-25 11/09/1998 126 <50 <0.50 <0.50 <0.50 <0.50 - - - - - - - - - 4.69 7.10 -2.41 - - MW-25 03/29/1999 60 60 <0.50 <0.50 <0.50 <0.50 - - - - - - - 4.69 5.81 -1.12 - 0.9 MW-25 06/15/1999 230 60.0 <0.500 <0.500 <0.500 <0.500 <2.50 - - - - - - 4.69 5.90 -1.21 - - MW-25 09/14/1999 56.0 60.0 <05W <0.500 <0.500 <0.500 <2.50 - - - - - - - - 4.69 6.90 -2.21 - - MW-25 12/20/1999 134 60.0 <0.500 <0.500 <0500 <0.500 <2.50 - - - - - - - - 4.69 8.12 -3.43 - - MW-25 02/24/2000 62 <50.0 <0.500 <0.500 <0500 <0.500 <2.50 - - - - - - - - 4.69 3.84 0.85 - - MW-25 04/27/2000 72.0 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 - - - - - - - - 4.69 5.85 -1.16 - - MW-25 08/10/2000 87.1 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 - - - - - - 4.69 7.37 -2.68 - - MW-25 11/02/2000 126 <50.0 <0.500 <0.500 <0.500 <0.500 <2.50 - - - - - - 4.69 7.07 -238 - - MW-25 01/25/2001 358 60.0 <0.500 <0.500 <0.500 <0.500 <2.50 - - - - - - 4.69 6.76 -Z07 - - MW-25 05/31/2001 60 <50 <0.50 <0.50 <0.50 <0.50 - <0.50 12 1.5 <0.50 <0.50 <5.0 <50 - 4.05 6.93 -288 - - au.a Pa