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

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TABLE3 GROUNDWATER DATA Page 38 of 66 SHELL STOCKTON TERMINAL 3515 NAVY DRIVE,STOCKTON,CALIFORNIA Well ID Dote TPHd TY MTBE MTBE B8 B T E X 8020 8260 TBA DIPS ETBE TAME Ethanol Methanol(Pg o Gw SPH wgm( Lead TOC Water Depth t Elea. Thickness DO 682) pg2) og2) 1+82) (482) W) (N82) 2) (482) (P82) Lead (mead) (ft MSL) (jt TOC) qt MSL) (ft) (mgt) MW-21 03/13/1995 1,700 8,000 1,900 67 29 53 _ _ _ MW-21 06/15/1995 3500 11,000 2,000 130 68 150 _ _ - - 6.98 7.75 -0.77 MW-21 09/12/1995 910 3,700 850 29 ND 62 _ - - - - - - 6.98 9.98 -3.00 - MW-21 11/13/1995 1,000 2,600 490 51 9.2 52 - - - - - - 6.98 9.98 0,04 _ - MW-21 03/20/1996 1,700 5,600 1,000 57 26 63 - - - - - - 6.98 11.87 x,89 _- W-21( 05/15/1996 1,300 6,500 770 69 35 62 _ _ - - 6.98 6.95 OA3 MW-21(D) 05/15/1996 1,700 5,810 730 62 28 61 - - - - - - 6.98 6.60 -1.62 - MW-21 08/12/19% 1,600 4,100 530 51 11 56 - - - - - - - - 6.98 _ _ - MW-21(D) 08/12/1996 1,200 4,000 530 48 11 50 - - - - - - - - 6.98 1110 -4.22 - MW-21 10/28/1996 1,000 3,100 730 34 11 51 - - - - - - - - 6.98 _ _ - MW-21 03/03/1997 1500 6,500 710 58 37 87 _ - - - - - - - 6.98 11.84 -1.86 - MW-21 05/05/1997 1,100 4,500 450 34 23 77 - - - - - - 6.98 1.8 -2.17 - MW-21 08/18/1997 810 2,200 180 20 7.0 30 - - - - - - - 6.98 10.08 -3.10 - MW-21 11/18/1997 190 71 24 0.56 <0.50 <30 _ - - - - 6.98 11.92 -3.94 _- MW - 1 11/18/1997 130 54 2.0 <0.5 <0.50 0.73 - - - 6.98 10.62 -3.64 _ MW-21 03/24/1998 630 2,200 180 16 8.7 33 - - - - - - - 6.98 _ _ - MW-21 06/02/1998 357 914 76 5.73 5.19 13.6 - - - - - - 6.98 5.76 1.22 - MW-21 09/02/1998 381 536 16.1 2.48 15.6 5.78 - - - - - - - - 6.98 8.40 -1.42 - MW-21 1]/09/1998 251 <500 10.2 55.0 6.0 5570 - - - - - - - 6.98 1032 -3.34 514 110 44 - MW-21 03/29/1999 <0.50 <0.50 0.76 _ - - - - 6.98 10.61 -3.63 _- MW-21 06/15/1999 514 368 69.8 3.05 1.56 220 308 _ _ - 6.98 8.92 -1.94 MW-21 09/14/1999 283 224 4.9 <0300 <0.500 Loo 192 _ - - - - - 6.98 9.32 -2.34 - MW-21 12/20/1999 149 56.9 0.716 <0.500 0.843 1.54 48.6 38.4 _- - - 6.98 10.72 -3.74 - MW-21 02/24/2000 430 1,280 128 10.3 <5.00 9.83 48.6 - - 6.98 11.92 -3.94 _ MW-21 04/27/2000 395 845 75.3 4.79 <2.50 6.42 1,470 - - - - - - - 6.98 1.9 -0.02 - MW-21 08/10/2000 394 550.0 <0.500 <0.500 <0.500 <0.500 52.50 - - - - - - 6.98 9.14 -216 _- MW-21 11/02/2000 470 463 26.5 <2.50 <2.50 <2.50 628 _ _ _ _ - 6.98 10.61 -116 _ MW-21 01/25/2001 314 376 19.1 3.96 1.28 5.69 <0.500 _ _ _ _ - 6.98 10.43 -3.45 _ MW-21 05/31/2001 - 230 4.1 <1.0 4.0 <1.0 - - 6.98 10.19 -3.21 _ MW-21 08/06/2001 340 - 530 170 14 <1.0 <1.0 <10 <I,500 320 <2.0 <2.0 0..0 <2.0 450 600 15 <2.0 52.0 <20 <300 7.02 9.99 -2.97 _ MW-21 11/20/2001 - 380 <20 52.0 <2.0 Q.0 - 7.02 10.69 -3.67 MW-21 02/21/2002 260 890 16 2.2 <7.0 3.6 570 580 28 <2A <2.0 <20 <4,ppp _ - 490 1,100 15 1.3 51.0 <10 <100 T02 10.86 -3.84 _ MW-21 05/22/2002 - 570 0.85 <0.50 <0.50 <0.50 - 202 9.00 -1.98 _ MW-21 08/19/2002 260 530 1.2 <0.50 <0,50 20 77 790 22 <0.50 <0.50 <5 150 - 6.98 9.58 -2.60 MW-21 11/20/2002 - 440 <0.50 <0.50 <0.50 <2.0 36 1,100 28 <0.50 <0.50 - - - - 32 1,100 27 0.50 _ 6.98 10.79 -3.81 MW-21 02/20/2003 170 610 3.7 0.90 <0.50 0..0 110 960 14 <0.50 _ _ - - 6.98 10.67 -3.69 - MW-21 05/30/2003 - 400 1.0 <0.50 <0.50 <2.0 - 100 520 6.1 <0.50 _ _ - - 6.98 9.24 -2.26 _- MW-21 08/13/2003 290- 170d <0.50 <0.50 <0.50 <1.0 16 910 24 2p - 6.98 10.02 -3.04 MW-21 11/06/2D03 - 260 1.6 <1.0 <10 < A - - - - 6.98 10.85 -3.87 - MW-21 02/10/2004 260 460 4.5 0.95 <0.50 2.1 34 1,300 36 <4.0 - - - - - - 65 2,200 9.4 <10 <0.5 6.98 9.00 -3.96 MW-21 05/20/2004 - 680 2.0 0.61 <0.50 1.4 - - 6.98 9.00 -2.02 - MW-21 08/16/2004 610 1,900 <25 25 <25 <5 18 620 10 0.57 - - - - - 29 1,500 12 550 <2.5 _ - 6.98 9.90 -2.92 _ MW-21 11/29/2004 - 1,000 <p.50 5050 <0.50 <1 - - 6.98 10.74 -3.76 MW-21 02/77/2005 210 - 21 810 9.0 0.53 - - _ - 0.2 930 52 5.7 1.6 10.8 - 150 890 1.9 0.67 _ - 6.98 10.34 -3.36 0.9/0.4 MW-21 05/12/2005 60 1,200 77 7.5 <25 14 - - - - 6.98 7.77 -0.70 170 3,400 <25 <50 - - - - 0.9 - 6.98 8.77 -1.73 - 1.6