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Iable I
<br /> Groundwater Monitoring aand Analytical Results
<br /> Tosco(Unocal)SeMe Station#5886
<br /> 2701 West March Lane
<br /> Stockton,California
<br /> WELL IDI DATE DTW S.I. GWE TPH D TPI/-G B T E X MTBE _
<br /> TOC*(f4) (A) (ft bgs) (msf) (Ppb) (ppb) (ppb) (Ppb) (Ppb) (Ppb) (Ppb)
<br /> 02/11-12102 608 -692 - <50 <0 50 <0 50 <0 50 <0 50 6,70016,3007
<br /> MW-1 03/21/02 593 5 0-25 0 -677 -- -- -- -- 4,500
<br /> -- --
<br /> (cont) 05/02-03102 602 -686 -- <50 <0 50 <0 50 <0 50 <0 50 430/3007
<br /> 08/01-0210220 630 -714 -- <5,000 <50 <50 <50 <100 3,400
<br /> 11120-21/0220 619 -703 -- <2,500 <25 <25 <25 <50 5,300
<br /> 02/20-21/0320 607 -691 -- <2,500 <25 <25 <25 <50 5,500
<br /> 05107-08103x0 546 -630 -- <2,500 <25 <25 <25 <50 2,700
<br /> MW-2
<br /> -030 09/06/96 8 13 5 0-25 0 -843 -- -- -- -- -- -- --
<br /> 09/09/96 822 -852 542 ND ND ND ND ND 1,800
<br /> 12/06/96 674 -704 64 ND ND ND ND 60 6,100
<br /> 03/07/97 590 -620 ND ND ND ND ND ND 6,700
<br /> -081 05/02/97 649 -730 53° ND 43 ND ND ND 6,400
<br /> 09/02/97 864 -945 ND ND ND ND ND ND 4,400/9,1007
<br /> 12/01/97 703 -784 ND6 NDS NO NDS ND8 NDS 3,600
<br /> 03/25/98 5 16 -597 ND6 ND8 NDS 3 1 NDS 29 1,70011,6007
<br /> 06/17/98 599 -680 ND6 NDS NDE NDS ND' ND8 2,50012,1007
<br /> 09/01/98 681 -762 ND ND ND ND ND ND 2,600/2,9007
<br /> 12/03/98 628 -709 ND6 ND8 NDB ND8 NDS ND8 4,80014,8007
<br /> 03/01/99 523 -604 NO 9,300 57 470 410 1,500 71013,7007
<br /> -030 ** 04/15/99 5 98 -628 -- -- -- -- -- -- --
<br /> 06101-02/99 670 -700 ND NDS NDS ND8 NDS NDB 2,60012,9007
<br /> 08116-17/99 701 -731 ND NDS ND8 NDS NO ND8 10,000113,0007
<br /> 11/29-30199 685 -7 15 129 8/6 16 12 NO NDS NDS NDS NDS 27,000132,0007
<br /> 02/28-29/00 411 -4 41 ND NO NDS NDS ND8 NDS 22,000120,0007
<br /> 05110-11100 5 96 -626 ND NO NO NDS NDS NDS 16 15,900/15,4007
<br /> 08103-04100 682 -712 951 61ND6 ND ND ND ND ND 1613,600115,6007
<br /> 11/16-17/00 624 -654 ND 17 NDS NO NO NDS NDS 15,000119,0007
<br /> 02105-06101 606 -636 ND NO NO NDS NDS ND8 5,17016,3007 I
<br /> 04/30101 591 -621 -- -- -- -- 3,1207
<br /> 5886 xis/#1180137 2 As of 05/08/03
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