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Table 2 <br /> r Historical Groundwater Monitoring Data <br /> 7-Eleven Store No 20632 <br /> 4627 DaVnci Drive <br /> Stockton,California <br /> tfdTE <br /> Well 101 Ethyl- MTBE MTBE Dissolved <br /> Elevation Benzene Toluene Benzene Xylene TPH-G 8020 8260 TBA DIPE ETRE TAME Oxygen DTW SPT <br /> (TOC) Date (pg/L) (pg1L) (pg1L) (pg/L) (p9/L) (pg/L) (pg1L) (pg[-) (pg/L) (pg1L) (pg1L) (mg1L) (feet) (feet) (feet) <br /> Groundwater Grab Samples <br /> GP-1 1 02121/97 390 700 370 2,100 16,000 16,000 -- <br /> GP-5 02121/97 110 12 39 310 2,800 1,800 — <br /> GP-7 02/21/97 34 66 26 110 440 58 -- — -- -- -- -- — -- -- <br /> GP-8 02121/97 <0 50 <0 50 <0 50 094 830 1,600 870 -- - -- -- — -- -- -- <br /> GP-9 02/21/97 <0 50 <0 50 <0 50 1 1 <50 <5 0 -- -- — -- -- - -- -- -- <br /> GP-10 1 02121197 <0 50 <0 50 <0 50 <0 50 <50 <50 <br /> Monitoring Well Samples <br /> MWA <br /> p 1 73 10/17/97 66 <05 <0 5 13 51 16 13 713 000 -540 <br /> 03/22/98 ND ND ND 073 ND 47 ND ND ND ND 04 535 000 -362 <br /> 06115198 <0 3 <0 3 <05 <0 6 <100 — <10 <100 <5 <5 <5 18 555 000 -382 <br /> 08/25/98 <0 3 <0 3 <0 5 <06 <50 — <5 <50 <5 <5 <5 -- 629 000 -456 <br /> 12/29/98 <0 3 <0 3 <0 3 <0 6 <50 — <5 <20 <5 <5 <5 04 660 000 -487 <br /> 02/17/99 <0 5 <0 5 <0 5 <0 5 <50 62 86 <2 <5 <5 <5 05 490 000 -317 <br /> 05/21199 <0 3 <0 3 <0 3 <0 6 <50 -- <5 <20 <5 <5 <5 10 605 000 432 <br /> 08/28/99 <0 3 <0 3 <0 3 <0 6 <50 581 554 <20 <5 <5 <5 09 680 000 -507 <br /> 11/24/99 091 378 241 588 259 <5 <5 <20 <5 <5 <5 10 660 000 487 <br /> 02/02/00 <0 3 <0 3 <0 3 <0 6 <50 <5 211 <20 <5 <5 <5 10 549 000 -376 <br /> 05116/00 <0 5 <0 5 <0 5 <1 <100 16 <50 <2 <2 <2 07 549 000 -376 <br /> 08/08/00 06 <0 5 <05 <1 <100 — 12 <50 <2 <2 <2 04 647 000 -474 <br /> 11/15/00 081 <0 5 <05 <1 5 <100 76 <50 <2 <2 <2 05 585 000 -412 <br /> 02/07/01 <0 5 69 0 79* 16 <100 -- 29 <50 <2 <2 <2 04 573 000 -400 <br /> 05123/01 14 066 <0 5 <1 <100 — 25 <50 <2 <2 <2 07 582 000 -409 <br /> 08/21/01 <0 5 <0 5 1 15 <100 — 21 <50 <2 <2 <2 09 671 000 498 <br /> 11/05/01 <0 5 <05 0.95 15 120 — <5 <20 <5 <5 <5 09 652 000 -479 <br /> 01/09/02 <5 <5 <5 <5 <50 -- 180 77 <5 <5 <5 08 413 000 -240 <br /> 04/10/02 <0 5 073 <0 5 <0 5 <50 <5 1.9 <5 <0 5 <0 5 <0 5 _08 602 000 A 29 <br /> I <br /> 7-11120632 tbl As 1 of 4 05-31-02 <br />