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_de 2: Summary of Groundwater Analytical Data - Zone George's Service 1680 Durham Ferry Road Tracy, California Wells Date See Notes Benzene Toluene Ethyl Total TPH MTBE DIPE ETBE TAME TBA 1,2-DCA EDB Benzene Xylenes Gasoline ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L MW-1 05/04/95 45 40 8.0 60 470 NA - 09/13/96 24 1.0 6.0 10 186 7.0 -- -- 01/17/97 17 1.0 4.0 4.0 176 9.0 -- - 05/05/97 # 47 2.0 2.0 13 331 13/5.8 -- - 09/19/97 12 0.6 2.0 6.0 75 2.8 ND<2 ND<2 ND<2 ND<100 02/24/98 24 1.0 3.0 13 181 4.0 - - -- -- 05/29/98 5.0 ND<0.3 2.0 2.0 ND<50 ND<2 - ... -- -- 11/13/98 18 0.8 2.6 8.6 97 ND<5 ND<5 NM N0<5 ND<50 04/28/99 11 0.6 3.0 7.8 94 ND<5 -- - - 09/01/99 7 ND<0.3 0.7 5.4 ND<50 ND<5 -- -- 12/22/99 100 4.3 32 87 820 N/A - - 03/31/00 174 1.0 9 47 667 7 -- 06/20/00 170 2 17 128 1,300 2 -- -- 09/20/00 169 2 8 66 871 ND<2 - -- 12/27/00 182 2 ao 93 960 ND<2 - -- -- 03/06/01 136 ND<0.3 28 78 710 ND<2 -- -- 06/20/01 162 2 23 111 1,080 N/A - 09/07/01 175 0.9 15.9 79.4 928 28 12/03/01 170 1.2 18.9 79.3 942 4.6 02/22/02 268 3.5 119 358 2,680 3.7 -- 06/05/02 84.6 0.4 40.9 136 779 2.5 - 09/11/02 63.5 0.8 13.8 140 1,220 ND<2 -- 12/26/02 101 0.9 35.4 112 925 N/A -- -- 03/21/03 64.7 0.9 47.9 123 981 ND<1 -- 06/06/03 79.9 0.6 25.2 67.4 672 1.3 09/05/03 238 1.8 91.1 171 1,450 3.3 -- -- - 01/03/04 1.7 ND<0.3 8.4 17.2 205 ND<1 -- 04/27/04 3.4 ND<0.3 6.5 12.3 199 ND<1 -- - -- 07/23/04 48.2 0.5 18.1 55.4 569 ND<1 - -- 11/03/04 84.7 1.0 45.7 88.7 928 1.1 -- - -- 01/21/05 300.0 ND<5 210.0 400.0 2,300 ND<5 - - - ND<5 -- 04/11/05 4.0 ND<0.5 1.7 3.4 ND<50 0.8 - 0.6 -- 07/20/05 9.3 ND<0.5 8.9 20.5 96.9 1.5 -- - 10/30/05 6.4 ND<0.5 13.7 43.8 256 0.9 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 01/22/06 8.9 ND<0.5 25.6 69.5 343 0.9 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 04/28/06 19.1 ND<0.5 76.6 192.3 872 1.2 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 08/02/06 20.8 ND<0.5 75.9 208.7 1,070 1.7 ND<0.5 ND<0.5 ND<0.5 ND<5 1.7 ND<0.5 10/15/06 14.3 ND<1 39.4 112.5 600 1.2 ND<1 ND<1 ND<1 ND<10 ND<1 ND<1 02/07/07 12 ND<0.5 45 86 830 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 1.2 ND<0.5 04/13/07 24 0.8 130 220 2,000 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 07/16/07 8.6 ND<0.5 52 92 1,000 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 10/10/07 3.1 ND<0.5 39 72 920 0.6 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 01/29/08 7.1 ND<0.5 85 150 1,900 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 04/21/08 11 ND<0.5 66 120 1,100 0.7 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 07/09/08 9.3 ND<0.5 99 180 1,600 0.7 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 10/23/08 13 ND<0.5 85 130 1,500 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 01/23/09 16 ND<1 130 210 1,800 ND<1 ND<1 ND<1 ND<1 ND<10 ND<1 ND<1 06/30/09 3.3 ND<0.5 40 48 850 ND<0.5 ND<0.5 ND<0.5 ND<0.5 ND<5 ND<0.5 ND<0.5 11/06/09 14 ND<1 150 250 2,200 ND<1 ND<1 ND<1 ND.<1 ND<10 ND<1 ND<1 04/26/10 9.4 ND<2 160 170 2,400 ND<2 ND<2 ND<2 ND<2 ND<20 ND<2 ND<2 10/22/10 9 ND<2.5 170 160 2,900 ND<2.5 ND<2.5 ND<2.5 ND<2.5 ND<25 ND<2.5 NO<2.5 04/26/11 4.9 1.1 100 81 1,400 ND<1 ND<1 ND<1 ND.<1 ND<10 ND<1 ND<1 04/16/12 Not Samp ed 10/18/12 1.4 ND<0.5 26 16 460 0.41 -- - - ND<0.5 01/22/13 ND<0.5 ND<0.5 8.4 e 280 ND<0.5 . -- - -- ND<0.5 04/25/13 1.0 ND<0.5 47 24 930 ND<0.5 - -- ND<0.5 08/05/13 ND<0.5 ND<0.5 15 5.7 490 ND<0.5 -- ND<0.5 10/23/13 ND<0.5 ND<0.5 10 8.8 410 ND<0.5 - -- ND<0.5 06/30/14 ND<0.5 ND<0.5 1.8 0.82 240 ND<0.5 - -- 0.38 -- 09/10/14 ND<0.5 NO.<0.5 5 3.4 350 ND<0.5 - -- 0.67 11/20/14 ND<0.5 ND<0.5 0.8 ND<1 120 ND<0.5 - -- -- 0.80 01/05/15 ND<0.5 ND<0.5 2.1 ND<1 230 ND<0.5 -- -- ND<0.5 04/08/15 ND<0.5 ND<0.5 ND<0.5 ND<1 810 ND<0.5 - - ND<0.5 07/29/15 ND<0.5 ND<0.5 ND<0.5 ND<1 67 ND<0.5 -- ND<0.5 10/05/15 Not Sampled 01/07/16 Not Sampled - Well was Dry 04/19/16 Not Sampled - Well was Dry 08/01/16 Not Sampled - Well was Dry 11/07/16 Not Sampled - Well was Dry Ground Zero Analysis, Inc. I of 9 8/16/2017