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<br /> SGroundwater Monitor na and Analytical Results
<br /> Tosco(Unocal)Service Station#5886
<br /> 2701 West March Lane
<br /> Stockton,California
<br /> IVVVLL IIS/ DATE DTW SI GW>r TPH4) 13 T MTBE
<br /> TOC*(ft) (jt} (jt, b s} (mxl) f ¢} ! b) (ppb) (PPS} (Ppb) (Pb} fp bJ
<br /> MW-1 03/21/02 593 5 0-25 0 -677 - -- -- -- -- 4,500
<br /> (cont) 05102-03102 602 -6 86 -- <50 <0 50 <0 50 <0 50 <0 50 430/300'
<br /> 68101-021020 630 -7 14 -- <5,000 <50 <50 <50 <100 3,400
<br /> 11120-211022° 6 19 -703 -- <2,500 <25 <25 <25 <50 5,300
<br /> 02120-21/03'° 607 -691 -- <2,500 <25 <25 <25 <50 5,500
<br /> 05107-08/0320 546 -630 -- <2,500 <25 <25 X25 <50 2,700
<br /> Mw-2
<br /> -030 09/06/96 8 13 5 0-25 0 -843 -- -- __ --
<br /> 09/09/96 8 22 -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 5 90 -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 4,40019,100'
<br /> 12/01/97 703 -784 ND NDS ND8 NDS ND8 NDs 3,600
<br /> 03/25/98 5 16 -597 ND" NDS NDS 3 1 NDS 29 1 700/1,600
<br /> 06/17/98 5 99 -680 ND ND8 NDS NDS NDS NO 2,500/2,100'
<br /> 09/01/98 681 -762 ND ND ND ND ND ND 2,60012,900'
<br /> 12/03/98 628 -709 ND6 NDS NDS NDS NDS ND8 4,80014,800'
<br /> 03/01/99 523 -604 ND8 9,300 57 470 410 1,500 71013,700'
<br /> -030 *' 04/15/99 598 -628 -- _- __ -_
<br /> 06101-02199 670 -700 ND NDS ND8 ND8 NDS NDS 2,600/2,900'
<br /> 08/16-17199 701 -7 31 ND NDS NDS ND8 NO ND8 10,000113,006'
<br /> 11/29-30/99 685 -7 15 1298/616'2 NDS ND8 ND8 NDS NDS 27,000132,000?
<br /> 02/28-29100 4 11 -441 ND ND8 NDS ND8 NO NDS 22,000120,000
<br /> 05110-11100 596 -626 ND ND8 ND8 ND8 ND8 NDS 1615,900/15 400'
<br /> 08/03-04100 682 -7 12 951 6/ND" ND ND ND ND ND 1613,600/15,600'
<br /> 11/16-17100 624 -654 ND" ND8 NDS NDS NO NDS 15,000119,000'
<br /> 02105-06101 606 -636 ND ND8 ND8 NDS ND8 NDS 5,170/6,300'
<br /> 04/30/01 591 -621 - -- -- -- -- 3,120'
<br /> 05/07-08101 S 97 -627 NDS ND ND ND ND ND 2,84012,900'
<br /> 06/27/01 678 -708 -- -- -- -- -- 1,900
<br /> 5886 xis/#180137 2 As of 05/08/03
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