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Quarterly Monitoring Report October 2000 Canepa's Car Wash(Paris Street) lanuary 25,2001 Page 4 TABLE 2 LABORATORY ANALYTICAL RESULTS (JANUARY 2,200.1) Other FB T E X MTBE Oxygenates/ TPH-G ' Additives'* MONITOR Detection 05 05 05 1 0 1 0 05 -25 005 WFLL/ DA f E Limits �tg/L n/L pg/L, µg/L µg/L µg/L tng/L ' SAMPLE Sample 1 D MW-1 1/2/01 2038-MW1-I/2/01 ND ND ND ND 05 ND 0102+- ' MW-2 1/2/01 2038-MW2-1/2/01 942 53 6 940 136 ND(5 0) ND(5-250) 149 MW-3 1/2/01 2038-MW3-1/2/01 1 7 ND 06 ND 3 1 ND 0 118 MW-4 1/2/01 2038-MW4-1/2/01 ND ND ND ND 1 5 ND ND MW-5 1/2/01 2038-MW5-1/2/01 4 680 2 270 813 1,900 ND(50) ND(50-2500) 262 MW-6 1/2/01 2038-MW6-1/2/01 ND ND ND ND 6 5 ND ND ' MW-7 l/2/01 2038-MW7-1/2101 1 2 ND ND ND ND ND 00976 ' ilint Conversions Analytical µg/1, pails per billion(ppb) B T E X=benzene toluene,ethyl benzene and total xylenes mg/L parts pLr million(ppm) 1 P11-6=total petrolLutn hydrocarbons quantified as gasoline MTBE=Methyl tertiary Butyl Ether ' Other Oxv;cnatLgAddittves=ethanol Di-tsopropvl ethLr(DIPE) Ethyl tertiary-Butyl Ether (FTBE) tertiary-amyl Methyl Ether(TAME),and tertiary Butanol *—SLC I thoratory reports in Appendix C for actual laboratory repotting limits ND=not detLULd at of above the laboratory reporting itmit ' ND(X)=not detected at 111,1101L a raised laboratory reporting smut See laboratory report sheets for reporting limits + = Sample chromatogram does not resLmblL typical ga501111e standard Oromatogram The sample was further analyzed and its-1 2- Dichloroethene l uc.hloroethene and Tetrichloroethenc were detected at conLLitratlonS Of 16 5 21 2 and 66 1 lig/l, 1e%pect1vL1y See laboratory reporh m Apptndix C 5 DISCUSSION OF RESULTS 51 DISCUSSION OF GROUNDWATER ELEVATIONS The groundwater elevation at the site has generally increased from approximately 35 feet bmsl to approximately 1 1 Leet bins] since September 1994 A hydrograph of monitor wells MW-1 through MW-7 (Flbule 5, Appendix A) illustrates the fluctuation of the groundwater table The average depth to groundwater measured in the monitor wells ort January 2, 2001 was approximately 24 0 feet below the monitor well measuring points, which is appfoxunately I6 to 22 feet above the top of all well screens The groundwater elevation ranged from 12 20 to 13 84 Leet bmsl The groundwater elevation contour snap (f t4"ule 2 Appendix A) indicates that the giouid-vvater unadtent at the site is generally towards the northeast This is consistent with previous monitoring results 5 2 DISCUSSION OF ANALYTICAL RESULTS The laboratory analytical results fol the January 2001 groundwater monitoring event are generally I consistent with the laboratory analytical results for the October 2000 groundwater monitoring event TPH-G was detected in the groundwater samples from MW-1, but the chromatogram did not resemble the typical gasoline chromatogiatn As TPH-G was present and BTEX constituents were notow , L� CONDOR