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I Quarterly Monitoring Report .January 2001 Canepa s Car Wash(P-ic1hc Avenue) Page-2 gasoline (TPH-G), and methyl tertiary-butyl ether (MTBE) were present at the former location of the fuel dispenser Islands Prior to granting approval of installation of the new SVE system, the Underground Storage Tank Clean-Up Fund indicated the need for additional investigation Condor subsequently conducted the installation and sampling of two soil borings adJacentto the SVE well array The investigation Included soil vapor screening using a Simulprobe sampling device in soil vapor collection mode The results indicated high concentrations of volatile organic compounds were present in the soil vapor at the site The laboratory analytical results of the soil and groundwater samples collected during the investigation are presented in Report — Soil and Groundwater Investigatzon, dated June 12, 1998 Operation of the SVE system has continued since its initiation on March 15, 1999 Due to a directive from the Underground Storage Tank Cleanup Fund (USTCF), laboratory analyses of groundwater samples for gasoline oxygenates/additives by EPA Method 8260 were discontinued beginning with the October 1999 quarterly groundwater monitoring event The USTCF indicated that analysis by EPA Method 8260 is not warranted based on historical groundwater laboratory analytical results Commencing with the October 1999 quarterly groundwater monitoring event, labotatory analyses of groundwater samples for gasoline oxygenates/additives are limited to MTBE using EPA Method 8020 or 8021B 3 0 QUARTERLY GROUNDWATER MONITORING —JANUARY 2001 • On January 9 and 10, 2001 a Condor representative collected groundwater samples from the eight monitor wells at the site (see Figure 2, Appendix A, for well locations) The sampling order was as follows MW-1, MW-3, MW-2, MW-8, MW-7, MW-5, MWA, and MW-6 3 1 GROUNDWATER MONITORING OBSERVATIONS AND PARAMETERS The static water level in each well was measured to the nearest 0 01-foot with a battery-operated, flat tape, water-level meter A clean, single-use, polypiopylene, disposable bailei was lowered into each well to check for floating product, petroleum odors, and sheen Floating product was not obseived in any of the monitor wells dtriirig the groundwater sampling Sheen was noted in the samples from MW-2 and MW-3 The surface of the groundwater table was above the top of the well screens, however Olfactory obscivations wet Stiong petroleum hydrocatbon odors detected in the gioundwater samples collected from MW-1, MW-2, and MW-3 • A moderate petroleum hydrocarbon odoi detected in the gioundwater sample collected from MW-4 • A slight petroleum hydrocarbon odor detected in the groundwater sample collected from MW-7 + Petroleum hydrocarbon odors were not noted in any of the other groundwater samples All of the monitor wells were purged with Redr-Flow submersible purnps which were decontaminated P1101 tU LEW APPIVY1111dtely thlCr, Well CaJlllg VOILIniej of Water weic purged IAoi t each will (SCC ilii Gioundwatet Monitoting Field Forms in Appendix B) The purged water fionn each well was d]SLlnaiged to the washwatet mixing pit 3 2 GROUNDWATER SAMPLING • The gioundwater simples were collected by filling two 40-milliliter glass vials with groundwatet directly Ifiom the pump discharge tubing at a reduced tate The sample containers were labeled, placed in a cooler *1k N&W_ %.J* CONDOR