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1 <br /> Quarterly Monitoring.Report,January 2000 <br /> Canepa's Car Wash(Park Street) <br /> March 2 2000 <br /> Page 4 <br /> 1 <br /> TABLE 2 <br />' LABORATORY ANALYTICAL RESULTS (January 18 and 19, 2000) <br /> Other <br /> B T E X MTBE Oxygenates/ TPH-G <br />' Additives <br /> MONITOR Detection 03 03 03 06 1 0 1 0- 10 005 <br /> WELL/ DATE Limits—+ µg/1 µg/1 µg/1 pg/1 µg11 µg/l Ing/E <br />' SAMPLE Sample I D <br /> MW-1 I/19/00 2038-MW1-1/19/00 ND 04 ND ND ND ND 007 <br /> MW-2 1/18/00 2038-MW2-1/18/00 79 44 130 160 ND ND 46 <br />' MW-3 I/19/00 2038-MW3-1/19/00 ND 29 03 ND ND ND 0 10 <br /> MW-4 1/19100 2038-MW4-1/19/00 ND ND ND ND ND ND ND <br />' MW-5 1/18/00 2038-MW5-1/18/00 4400 6500 980 2900 ND ND 32 <br /> MW-6 1/19/00 2038-MW6-l/I9/00 ND 06 ND ND ND ND ND <br /> MW-7 1/19/00 2038-MW7-1/19/00 ND 08 . ND ND ND ND 006 <br /> Unit Conversions Analytical <br /> µg/1 parts per billion(ppb) B T E X=benzene toluene ethyl benzene and total xylenes <br /> mg/I parts per million(ppm) TPEI-G=total petroleum hydrocarbons quantified as gasoline <br /> MTBE=Methyl tertiary Butyl Ether <br /> Other Oxygenates/Additives=ethanol Di-Isopropyl ether(DIPS),Ethyl tertiary-Butyl Ether <br /> I (ETBE),tertiary-amyl Methyl Ether(TAME),and tertiary-Butanol <br /> ND=not detected at or above the reported laboratory detection hrmt <br /> 5 DISCUSSION OF RESULTS <br /> Since September 1994, the groundwater elevation at the site has generally increased from approximately 35 to <br /> approximately 12 feet bmsl A hydrograph of monitor wells MW-1 through MW-7 (Figure 4, Appendix A) <br /> illustrates the fluctuation of the groundwater table The average depth to groundwater measured during the <br /> January 18, 2000 groundwater monitoring event was approximately 24 6 feet below the monitor well measuring <br /> points The groundwater elevation ranged from 12 72 to 14 42 feet bmsl The groundwater elevation contour <br /> snap (Figure 3, Appendix A) indicates that the groundwater gradient at the site is generally towards the <br /> northeast This is consistent with previous monitoring results <br /> The laboratory analytical results for the January 2000 groundwater monitoring event are generally consistent <br /> with the laboratory analytical results from the October 1999 groundwater monitoring event, and this was the <br /> first groundwater monitoring event that no oxygenates or additives were detected The concentrations of <br /> hydrocarbons detected in the groundwater sample collected from MW-5 represent historical highs for samples <br /> collected from this well None of the analytes of concern were detected in the groundwater sample collected <br /> from monitor well MW-4 TPH-G and all BTEX constituents were detected in the groundwater samples <br /> collected from MW-2 and MW-5 Low concentrations of toluene and TPH-G were detected in the groundwater <br /> samples collected from MW-i and MW-7 Low concentrations of toluene, ethyl benzene and TPH-G were <br /> detected in the groundwater sample collected from MW-3 A low concentration of toluene was detected in the <br /> groundwater sample collected from MW-6 <br /> f <br /> �n <br /> �� CONDOR <br />