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No MW aw <br /> 5 <br /> Table 2 <br /> Historical Groundwater Monitoring Data <br /> 7-Eleven Stare No 20632 <br /> 4627 DaVinc+Dnve <br /> Stockton, California <br /> Well Iia/ _ Ethyl- MTBE MTBE Dissolved <br /> Elevat[60 Benzene Toluene Benzene Xylene TPH-G 8026 8260 TBA DIPS ETRE TAME-- - Oxygen DTW SPT WTE <br /> -(TOC) _ Date (pg/L) (ia IL) (pg1L) ( g/L) _OWL) WIL) (lr /L) (inn) (Pg8-) (hg8-) (IFIL) w ( 9�-) (feet) (feet) (feet) <br /> I Groundwater Grab Samples "- - _ ,a <br /> GP-1 02/21/97 390 700 370 2,100 16,000 16,004 <br /> _GP=S -- 02/21197 110 12 1 39 310 2,800 `1,800. <br /> GP-7 02/21/97 34 65 26 110 440 $8 <br /> "GP-$-, 02121197 <0 50 <0 50 <0 50 094 830 1,600 870 <br /> GP-9 02/21/97 <0 50 <0 50 <0 50 11 <50 <50 --- <br /> G -30 02121197 <0 50 <0 50 <0 50 <0 50 <5Q <5 0 -- �- — — -- -- _ <br /> Monitoring Well Samples <br /> MW-1 <br /> 173 10/17/97 68 µ <O 5 <0 5 13 51 1$ 13 -- -- -- -- -- 713 0 00 -5 40 <br /> 03/22/98 NO ND NO 078 NO -- 47 NO ND ND ND 04 535 000 -362 <br /> 061151198 -<03- <0 3 <0 5 <0 6 <100 <10 <100 <5 <5 <5 la 555 0 00 -382 <br /> 06125/98 <0 3 <03 <0 5 <06 <50 -- <5 1 <50 <5 <5 <5 -- 629 000 -456 <br /> 12129/98 <03 <03 <0 3 <0 6 <50 <5 <20 <5 <5 <5 04 660 000 -487 <br /> 02/17/99 <0 5 <05 <0 5 <0 5 <50 5,2 86 <2 <5 <5 <5 05 490 000 -317 <br /> 05121/99 <03 <0 3 <0 3 <0 6 <50 — <5 <20 <5 <5 <5 '10 6 05 000 -432 <br /> 08/28/99 <03 <0 3 <0 3 <06 <50 581 554 <20 <5 <5 <5 09 680 000 -507 <br /> 11124/99 091 378 1 241 583 259 <5 <5 <20 <5 <5 <5 16 660 000 487 <br /> 02/02/00 <03 <0 3 <0 3 <0 6 <50 <5 21 1 <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 /> 08108/00 06 <0 5 <0 5 <1 <100 — 12 <50 <2 <2 <2 04 647 000 -474 <br /> 11/15100 081 <0 5 <05 <1 5 <100 -- 76 <50 <2 <2 <2 05 585 000 412 <br /> 02/07/01 e05 69 0 79* 16 <100 -- 29 <50 <2 <2 <2 04 573 000 -400 <br /> 05/23/01 -14 0 55 �0 5 <1 <100 -- 25 X50' <2 <2 <2r 07 582 000 -409 <br /> MW-2---_ <br /> 282 10/17/97 <0 5 <05 -405 <0 5 440 9,800 2,300 -- — -- -- — 8 37 000 -555 <br /> 03!22198 NO NO NO 0 78 NO -- 2,000 ND ND ND NO 0 2 6 61 000 -379 <br /> 06/15198 <03 <0 3 <06 �0 6 1,300 — 1,600 .52,000 <100 <100 <100 1 5 6 84 000 -402 <br /> 08/251958 06 <0 3 <0 5 <0 6 1,550 — 1,810 <2,000 <200 <200 <200 -- 770 000 -488 <br /> 12/29198 �<O 3 <03 <0 3 <0 6 2,130 � 5,280 ��800 <200 <200 3_ <2,000 0 4 7 76 000 -494 <br /> 02/17/99 <0 5 <0 5 <0 5 <05 770 3,300 4,900 <1,000 <250 <250 <250 09 613 000 -331 <br /> 05121199 388 <1 5 <1 5 <3 1,180 -- 5,340- P<400 <100 <100- -_<100, 08 737 000 -4555 <br /> 08/28199 <03 <0 3 <0 3 <06 2,100 -- 5,130 <800 <200 <200 .5200 0 8 7 95 O OO -5 13 <br /> 11124I99 -0.4- 288 <03 1 1.77 . 30490 5,830 1 7,450 1 .5800 .5200 .5200 .5200 1 B 7 85 0 00 -5 03 <br /> 7-11/20632_tbf xfs i of 3 6-13-01 <br />