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<br /> TABLE 4
<br /> ANALYTICAL RESULTS OF GROUND WATER SAMPLES
<br /> GUARDINO AND CRAWFORD
<br /> 517 West Fremont Street, Stockton, California
<br /> WA)
<br /> TPH-g BenzeneToluene benzene Xylenes MTBE DIPE ETBE TAME TBA Methanol Ethanol EDB 152-
<br /> DCA
<br /> WellI.D. Date
<br /> well Sampled EPA
<br /> Screen Method EPA Methods 8021 or 8260B EPA Method 8260B
<br /> SO15M
<br /> 07-29-99 56,000 6,800 9,600 780 9,000 330 <35 <35 <35 <180 - - -
<br /> 02-10-00 18,000 3,100 1,400 2,500 169000 61 <35 <35 X35 <180 - - - -
<br /> 06-12-00 21,000 5,100 19400 140 11400 150 <20 <20 <20 <100 - - - -
<br /> 11-15-00 120,000 189000 24,000 2,500 139000 480 <5.0 <5.0 <5.0 <25 <1,000 <250 - -
<br /> 05-25-01 16,000 25600 2,200 460 2,000 36 <1 .0 <1 .0 <1 .0 <5.0 <500 <50 <1 .0 <1 .0
<br /> 08-24-01 269000 3,700 49300 730 39700 62 <10 QO <10 <50 <52000 <500 <10 <1 .0
<br /> 12-14-01 12,000 19200 19200 310 29700 19 <1 <1 <1 <25 <1,000 <50 <0.5 <0.5
<br /> 03-14-02 11,000 1,500 19300 340 29600 20 <1 <1 <1 <25 - - <0.5 <0.5
<br /> 05-31-02 180000 21300 2,200 420 21100 50 <1 <1 <1 <25 - - <0.5 <0.5
<br /> 08-23-02 239000 3,300 39600 650 39400 49 <10 <10 <10 <250. - - <5 <5
<br /> 12-11-02 333000 49500 51000 780 49200 54 <17 <17 <17 <170 - <17 <17
<br /> 03-06-03 19400 770 470 330 11140 50 <1 <1 <1 <10 - - <0.5 <0.5
<br /> MW4 07-14-03 44,000 41100 49000 680 31600 49 <1 <1 <1 QO - - <0.5 <0.5
<br /> (15'-35) 08-29-03 439000 41400 69300 19700 71600 63 <I <1 <1 QO - - <0.5 <0.5
<br /> 12-03-03 81800 2500 19600 420 15950 22 <1 <I <1 <10 - - <0.5 7.1 `
<br /> 03-24-04 4,300 760 720 92 530 <1 <1 <1 <1 <10 - - <0.5 17
<br /> 06-30-04 209000 51800 69100 11000 61000 36 <1 <1 <1 <10 - - <0.5 <0.5
<br /> 09-24-04 23,000 49600 41800 1,300 6,900 37 <1.0 <1 .0 <1 ,0 <10 - - <0.5 <0.5
<br /> 12-15-04 16,000 2,800 3,100 850 31600 <1 .0 <1 .0 <l.o <1.0 <10 - - <0.5 <0.5
<br /> 03-25-05 900 600 46 <0.5. 76 <1 .0 <1 .0 <1 .0 13 <10 - - <0.5 5.3
<br /> 06-29-05 229000 4,600 2,600 55 37850 <1 .0 <1 ,0 <1 .0 130 <10 - - <0.5 70
<br /> 09-12-05 85,000 40,000 269000 2,500 143500 61 <1 .0 <1 .0 58 <10 - - <0.5 51
<br /> 12- 15-05 329000 8,600 2,800 960 41050 <1 .0 <1 .0 Q .0 70 <10 - - <0.5 120
<br /> 03-08-06 35,000 2,100 57400 10100 39400 <1 .0 <1 .0 <1 .0 70 <10 <0.5 49
<br /> 06-08-06 1109000 139000 239000 2,400 169400 <1 .0 <1 .0 <1 .0 180 <10 <0.5 140
<br /> 09-11 -06 100,000 19,000 20,000 2,400 15,400 <1.0 <1 .0 <1 .0 <1 .0 <10 <0.5 32
<br /> Advanced GeoEnvironmental, Inc
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