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Table 2 Historical Groundwater Monitoring and Analytical Data 7-Eleven Store#19976 1399 North Main Street Manteca CA iW@II IDI Ethyl- 1,2- Eth- Meth- Dissolvevation Date Benzene Toluene Benzene Xylene TPH-G 8020 MtBE TBA DIPE EtBE TAME DCA anol anol Notes Oxygen DTW SPT WTE bC WIL) gfL) WIL) (NgrL) I (pgrL) (?JgrL) 11191L) (ugrL) ( grL) (Ng1L) (p rL) {Vg/L) (mgrL) (mglL) (mgrs_) feet (feet) (feet) MW-5 3188 06/04/99 193 120 145 825 3,390 -- 135 <20 <5 <5 <5 - 02 1535 000 1653 09/14/99 625 14 36 284 492 353 467 <40 <10 <10 <10 -- — -- -- 1743 000 1445 11/04/99 208 075 981 269 702 218 216 565 <5 <5 <5 - 14 1760 000 1428 01/24/00 421 083 365 398 174 623 83 <20 <5 <5 <5 - -- -- 02 1769 000 1419 04/06/00 86 22 69 110 1,200 -- 130 <120 <5 <5 <5 — 1 0 1668 000 1520 07/21/00 29 <0 5 23 14 650 310 <250 <10 <10 <10 <1 <5 <5 06 1822 000 1366 10/12/00 12 21 19 30 550 470 <250 <20 <20 <20 <10 <5 <5 04 1831 000 1357 01/16/01 29 45 34 86 1,000 500 <250 <10 <10 <10 -- C 06 1800 000 1388 04/02/01 28 77 13 50 400 320 <250 <10 <10 <10 -- -- — 09 1883 000 1305 06/26/01 29 24 23 48 690 320 <250 <10 <10 <10 -- 10 2098 000 1090 11/28/01 54 <0 5 <0 5 <0 5 280 490 <100 <25 <25 <25 -- -- 1 1 21 14 000 1074 01/30/02 240 40 180 460 3,700 — 660 140 <5 <5 <5 — -- 09 1890 000 1298 04/04/02 280 62 200 520 6,100 700 570 220 <10 <10 <10 -- 10 19 74 000 1214 07/08/02 14 24 10 062 480 300 550 180 <10 <10 <10 -- — -- 10 2095 000 1093 10/03/02 <0 5 <0 5 <0 5 <0 5 <50 120 160 52 <2 5 <2 5 <2 5 -- — -- 1 1 2015 000 1173 03/11/03 <0 50 <0 50 <0 50 <0 50 <50 -- 072 <50 <0 50 <0 50 <0 50 -- -- f 35 1941 000 1247 06/27/03 <0 50 <0 50 <0 50 <0 50 <50 -- 060 <5 0 <0 50 <0 50 <0 50 -- -- -- f 04 2070 000 11 18 09/15/03 <0 50 <0 50 <0 50 <0 50 <50 -- 160 43 <0 50 057 <0 50 -- 06 2099 000 1089 12/23/03 <0 50 <0 50 <0 50 <0 50 <50 -- 130 27 <0 50 <0 50 <0 50 - -- -- 05 2186 000 1002. I 117-Elevenl7-11 Stores1199761Tables119976 03-4Q AsHistoncal Water Page 7 of 10