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• SUMMARY OF • • <br /> GROUNDWATER MONITORING DATA <br /> Third Quarter 1993 <br /> ARCO Service Station 2133 <br /> 2906 Benjamin Holt Drive, Stockton <br /> (micrograms per Iter(ggn), unless noted) <br /> I <br /> Floating <br /> Well ID Depth to Product <br /> and Sample Sampling Water Thickrness Total TPH as <br /> Depth Datefeet feet Benzene Toluene Eth Ibentene X lenes Gasoline <br /> PR-1 (27) 8/5/93 1548 -. ND ND ND ND ND <br /> PR-2(27) 8/5/'93 1477 ._ ND ND ND ND ND <br /> BHD-1 (27) 8/5/93 1485 -- 280 31 930 950 10,000 <br /> BHD-2(28) 8/5/93 1520 -- ND ND ND ND ND <br /> E-2(2 1) 8/51'93 17 10 -- 45 <5* 12 5 2,300 <br /> E-3 (18) 8/5/93 1670 - 1,800 69 670 1,400 27,000 <br /> E-4(21) 8/5/93 1663 -- 900 <20* 160 240 9,400 <br /> E-5(19) 8/5/93 1680 - 4,700 <50* 560 560 26,000 <br /> E-6(18) 8/5193 1711 -- 2,500 57 1,100 1,000 16,000 <br /> E-7(18) 8/5/93 1543 - <5** <3** 2 9 0 9 360 <br /> E-8(23) 8/5/93 1528 -- 12 ND 23 16 320 <br /> E-9(IS) 8/5/93 1583 - 370 22 220 460 16,000 <br /> E-10(22) 8/5/93 15 52 -- 3,300 630 1,700 5,700 32,000 <br /> E-11 (22) 8/5/93 1753 -- 540 <130** 200 550 54,000 <br /> E-12(23) 8/5/93 1608 -- 0 6 ND 16 2 2 830 <br /> TPH=Total petroleum hydrocarbons <br /> ND=Not detected <br /> *=Raised MRL due to high analyte concentration requmng sample dilution <br /> **=Raised MRL due to matrix interference <br /> 0071-01901 <br />