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Table 1 GROUNDWATER ELEVATIONS AND ANALYTICAL RESULTS E-Z SERVE#100878 • 1012 W Yosemite Avenue Manteca,California Well Samplmg TOC DTW GWE SPH TPHg B T E X MTBE ID Date (feet) (feet) (feet) (feet) (gg/L) (µg/L) (991L) {µ9/L} (991L) (99/L) MW-6 12/10/98 9804 1188 8616 000 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 11/21/97 9804 1510 8294 000 NS NS NS NS NS NS 6/20/97 9804 1403 8401 000 ND ND ND ND ND ND 4/15/97 9804 1294 8510 000 55 ND ND ND 2 NA 12/10/96 9804 1525 8279 000 ND 08 19 ND 3 1 1 9/17/96 9804 1766 8038 000 ND ND ND ND ND 1 MW-7 12/10/98 9760 1126 8634 000 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 11/21/97 9760 1441 8319 000 NS NS NS NS NS NS 6/20/97 9760 13 10 8450 000 ND ND ND ND ND ND 4/15/97 9760 1226 8534 000 ND ND ND ND ND NA 12/10/96 9760 15 19 8241 000 110 21 79 13 10 ND 9/17/96 9760 1667 8093 000 ND ND ND ND ND ND MW-8 12/10/98 9805 1181 8624 0 00 ND<50 ND<0 5 ND<0 5 ND<0 5 ND<0 5 ND<5 0 11/21/97 9805 1498 8307 000 NS NS NS NS NS NS 6/20/97 9805 1374 8431 000 ND ND ND ND ND ND 4/15/97 9805 1281 8524 000 ND ND ND ND ND NA 12/10/96 9805 1457 8348 000 100 23 84 14 11 06 9117196 9805 1739 8066 000 ND ND ND ND ND 1 Notes, Well I D Well identification ND<0 5 Compound not detected in concen- TOC Top of well casing elevation trations exceeding method detection DTW Depth to groundwater limits(indicated if available) GWE Groundwater elevation * No Purge SPH Seperate-phase hydrocarbon thickness TPHg Total Petroleum Hydrocarbons as gasoline by EPA Method 8015 (modified) BTEX Benzene, toluene,ethylbenzene and xylenes by EPA Method 8020 MTBE Methyl tert-butyl ether by EPA Method 8020 gg/L Micrograms per liter(—parts per billion) NS Not Sampled NA Not analyzed �I °' r' I VI I I II1 I Page2of2 I E I I I f I I ! IIS I I i I I I III I I , I III I II I I,I II II it II' i I it f' f I I� II II II !I II