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<br /> Table 1
<br /> Groundwater Elevations and Analytical Data
<br /> Parkinson's Arco
<br /> 3250 West Hammer Lane
<br /> Stockton,California
<br /> Top of
<br /> Casing Depth to Groundwater TPH as Ethyl-
<br /> Sample Date Elevation Water Elevation Gasoline Benzene Toluene benzene Xylenes MtBE DIPE ETBE TAME TBA 1,2-DCA
<br /> Identification Sampled MSL feet b s MSL NO u l (ug/1) (ug/1) (U11)( (U11)( u A (ug/1) (ug/1) (U911) EDB u fl u
<br /> MWA 09/21/00 4 30 1296 -866 25,700 1,820 503 1,450 582 28,300 <20 292 108 3,710
<br /> 01/19/01 1290 8 60 2 250 178 10 155 244 34,200 <20 260 215 3,910
<br /> 04/23101 1194 764 19,000 1,780 208 1,480 1600 39,500 <100 <100 285 4,780
<br /> 07/27/01 1312 882 13,000 1,700 98 1,100 730 40,000 <200 <200 290 <20,000
<br /> 11101101 1412 -982 14,000 1,100 20 980 470 24,000 <20 <20 190 2,400
<br /> 01/28102 1261 831 8,700 1,100 <50 1,000 320 18,000 <250 <250 <250 <2,500
<br /> 04123102 1270 840 4,900 1,000 <3 0 940 210 17,000 <250 <250 <250 <2,500
<br /> 07/29/02 5 25 1370 845 10,000 850 270 1,000 860 7,400 <50 <50 79 1,600
<br /> 10107102 1454 929 6,300 500 0 91 800 34 3,600 <50 <50 67 3,900
<br /> 01102/03 1398 8 73 4,500 1,000 44 1,500 310 2,500 <250 <250 <250 23,000
<br /> 04103103 1372 847 5,8000 760 15 1,100 140 770 <50 <50 <50 9,200
<br /> 07/21103 14 34 909 4,400121 640 <0 50 930 82 230 <50 <5 0 11 8,800
<br /> 10/13/03 1509 -984 4,600" 700 <25 940 93 1,000 <50 <50 <50 5,800 <50 <50
<br /> 01112104 1443 918 3,000 600 10 660 47 310 <5 0 <5 0 <50 4,500 <5 0 <5 0
<br /> 06/22/04 1419 -894 4,200P1 910 23 280 17 220 <20 <20 <20 9,800 <20 <20
<br /> 08/12/04 1461 936 1,10011 86 15 16 <20 34 <0 50 <0 50 <0 50 3,200 <0 50 <0 50
<br /> 10/21/04 1489 -964 5,40014 780 99 720 940 52 <0 50 <0 50 <0 50 7,200 <0 50 15
<br /> 01/17/05 13 82 857 3,90014 750 30 180 140 <100 <10 <10 68 5,100 <10 <10
<br /> MW 2 09/21/00 4 74 1323 -849 529 <0 5 <0 5 <0 5 <05 5,830 <2 0 <2 0 45 1,150
<br /> 01119/01 1323 849 <500 <50 <5 0 <5 0 <5 0 21,600 <20 <2 0 168 2 520
<br /> 04/23/01 1227 7 53 <500 <50 <5 0 <5 0 <5 0 10,400 <20 <2 0 67 5 697
<br /> 07127/01 1345 -871 190 <0 5 20 41 29 4,800 <100 <100 <100 <10,000
<br /> 11/01/01 1445 9 71 <50 <0 5 <0 5 <0 5 18 3,100 <1 0 <1 0 21 <100
<br /> 01/28/02 1293 -819 <50 <05 <0 5 <0 5 <0 5 3,300 <100 <100 <100 <1,000
<br /> 04/23/02 1302 -828 <50 <0 3 <0 3 <0 3 <0 6 3,700 <50 <5 0 30 65,000
<br /> 07129102 5 651'1 14 02 837 <50 <0 3 <0 3 <0 3 <0 6 4,000 <50 <5 0 34 61
<br /> 10/07102 1488 -923 99th <0 30 <0 30 <0 30 <0 60 5,000 <50 <5 0 43 <50
<br /> 01/02103 14 31 8 66 <50 0 96 <0 30 <0 30 <0 60 4,400 <50 <5 0 <50 <50
<br /> 04/03/03 14 02 8 37 <50 34 <0 50 <0 50 <1 0 3,600 <50 <5 0 25 <50
<br /> 07/21/03 1469 904 <50 <0 50 <0 50 <0 50 <1 0 4,200 <50 <5 0 37 <50
<br /> 10/13/03 1542 977 <50 <0 50 <0 50 <0 50 <1 0 4,700 <50 <50 <50 <500 <50 <50
<br /> 01/12104 1478 -913 <50 <0 50 <0 50 <0 50 <1 0 1,700 <50 <5 0 12 <100 <0 50 <0 50
<br /> 06/22/04 1453 -888 <50 <0 50 <0 50 <0 50 <1 0 2,000 <25 <25 <25 <250 <25 <25
<br /> 08/12/04 1504 -939 <50 <0 50 <0 50 <0 50 <1 0 2,500 <0 50 <0 50 16 120 <0 50 <0 50
<br /> 10/21/04 1519 9 54 <50 <0 50 <0 50 <0 50 <1 0 1,100 <0 50 <0 50 10 880 <0 50 <0 50
<br /> 01117105 1410 -845 <50 <0 50 <0 50 <0 50 <10 1,500 <25 <25 160 330 <25 <25
<br /> Shaw Envuanmental Inc
<br /> N 5rmc 1 rojecLs\Projecu18801040UA101071200511QO511Q05 xds 3/2112005
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