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1 <br />' Quarterly Monitoring Report,July 1999 <br /> Canepa s Car Wash(Park Street) <br /> August 31 1999 <br /> Page 3 <br /> TABLE 1 <br /> GROUNDWATER ELEVATION DATA (IDLY 27, 1999) <br />' MW-1 THROUGH MW-7 <br /> Well Well Casing Well Collar Depth to Groundwater <br />' ID Screen Elevation Water Elevation <br /> Interval (feet) (feet) (feet) <br /> (feet- bgs) <br />' MW-1 45 -65 1097 2234 -1137 <br /> MW-2 45 -65 1037 23 14 -1277 <br />' MW-3 45 -65 1176 2372 -1196 <br /> MW-4 40-60 1085 2191 -1106 <br />' MW-5 40-60 1125 23 37 -12 12 <br /> MW-6 40-60 1 1 72 23 57 -1185 <br /> MW-7 40-60 1105 22 66 -1161 <br /> 4 2 Laboratory Analyses (TPH-G, BTEX, Oxygenates/Additives) <br />' The groundwater samples were analyzed by GeoAnalytical Laboratories, Inc for total petroleum hydrocarbons <br /> quantified as gasoline (TPH-G) by Method 5030/LUPT, for benzene, toluene, ethyl benzene, and total xylenes <br /> (BTEX) by EPA Method 602, and for selected gasoline oxygenates/additives by EPA Method 8260 The <br />' gasoline oxygenates/additives include methyl tertiary-butyl ether (MTBE), ethanol, tertiary-butanol, di- <br /> isopropyl ether(DIPS), ethyl tertiary-butyl ether(ETBE),and tertiary-amyl methyl ether(TAME) <br /> Laboratory analyses indicate that none of the analytes of interest were detected at or above the laboratory <br /> reported detection limits in the groundwater samples collected from monitor wells MW-1 and MW-4 BTEX <br /> and TPH-G were detected in the sample collected from monitor well MW-2 at concentrations of 99, 59, 170, <br />' and 210 micrograms per liter (µg/1), respectively TPH-G was detected in the sample collected from monitor <br /> well MW-2 at a concentration of 6 3 milligrams per liter(mg/1) Toluene, MTBE, and TPH-G were detected in <br /> the groundwater sample collected from monitor well MW-3 at concentrations of 2 3 µg/l, 5 7 gg/1, and 0 08 <br />' mg/l, respectively B fEX and TPH-G were detected in the groundwater sample collected from monitor well <br /> MW-5 at relatively elevated concentrations of 3,400 pg/l, 5,800 µg/l, 740 µg/l, 2,400 µg/1, and 27 mg/l, <br /> respectively Toluene and MTBE were detected in the sample collected from monitor well MW-6 at <br /> concentrations of 0 3 p.g/l and 19 gg/l, respectively A low concentration of toluene (1 2 µg/l) was detected in <br /> the groundwater sample collected from monitor well MW-7 DIPS was detected in the sample collected from <br /> MW-5 at a concentration of 7 4 µg/l None of the other selected gasoline oxygenates/additives were detected at <br /> or above the laboratory reported detection limits in any of the other groundwater samples A summary of the <br /> laboratory analytical results is presented in Table 2 on the neat page and in Figure 2, Appendix A Laboratory <br /> report sheets indicating analytical methods used, detection limits, and the results of the analyses are included in <br /> Appendix C historical groundwater analyses are presented in I'able A, Appendix B <br /> t� CONDOR <br />