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Remedial Action Plan <br /> Canepa's Car Wash, 6230 Pacific Avenue, Stockton, California <br /> March 3, 2003 <br /> Page 3 <br /> modified to utilize vapor phase carbon vessels, and restarted on March 2002 . Influent concentrations <br /> (measured with a PID) from March 2002 through January 2003 dropped from I 1 I ppm to between 10 and <br /> 15 ppm. The system was shut off in January 2003 pending new site development and the completion of <br /> this Remedial Action Plan (RAP). <br /> i 2.3 SUMMARY OF CURRENT SITE DATA <br /> Soil samples were collected immediately above the groundwater in selected wells and soil borings during <br /> the investigation described in the January 21 , 2002 report. No contaminants were detected in the vadosc <br /> zone. Figure 2 shows all boring and well locations, and Appendix A contains tables of all analytical data. <br /> The most recent groundwater monitoring event was conducted on January 14 and 15, 2003, with <br /> analytical data presented below. <br /> Groundwater Laboratory Analytical Results (January 14 and 15, 2003) <br /> Constituent: Benzene Toluene Ethyl Total MTBE Gasoline <br /> MCL I pg/L 150 pg/L Benzene X lenes TPH-G 13 tg/L O <br /> 700 tg/L y 1 xygenates/Additives <br /> Analytical Method-+ 8020 8020 8020 8020 8015m 8260B 8260E <br /> Reporting Limits-- > 0.5 pg/L 0.5 pg/L 0.5 pg/L 1 .0 pg/L 0.05 0.5 0.5-13.0 <br /> J Sample I.D. mg/L pg/L µg/L <br /> -� 1707-MW-1 -1/15/2003 19100 120 80 170 3.4 60 < 5.0- 130* <br /> 1707-MW-2-1 /15/2003 159000 980 21400 47100 69 <50 < 50-1,300* <br /> < 5. 0-130* <br /> --� 1707-MW-3-1 /15/2003 0.5 <0.5 <0.5 <1 .0 <0.05 350 <br /> 190 (132-DCA) <br /> -- 1707-IVIW4-1 /15/2003 13 <0.5 0.5 <1 .0 0.08 <0.5 < OS- 13 .0 <br /> 1707-MW-5-1 / 1412003 <0.5 <0.5 <0.5 <1 .0 <0.05 <0.5 < 0.5- 13.0 <br /> - 1707-MW-6-1 / 14/2003 <0.5 <0.5 <0.5 <1 .0 <0.05 <0.5 < 0.5-13 .0 <br /> il - -I1707-MW-7-1 /14/2003 <0.5 <0.5 <0.5 <1 .0 <0.05 <0.5 < 0.5-13.0 <br /> - ,;. 1707-MW-8-1/14/2003 <0.5 <0.5 <0.5 4 .0 <0.05 <0.5 < 0. 5- 13 .0 <br /> -- � 1707-MW-9- 1 / 14/2003 <0.5 <05 <0.5 <I .0 <0.05 <0.5 < 0.5-13 .0 <br /> 1 <br /> 1707-MW- 10- 1 /14/2003 <0.5 <0.5. <0.5 < LO <0.05 <0.5 < OS-13 .0 <br /> 1707-MW- I1 - 1/15/2003 2.6 <045 0.8 4 .0 0.18 13 15 (TBA) <br /> I.. 1707-MW- 12D- 1/15/2003 0.5 <0.5 0.6 < 1 .0 0.057 <0. 5 < 0.5-13.0 <br /> f {11 1707-SV4- 1/15/2003 82,000 74,000 9,800 241000 710 530,000 < 5,000430,000* <br /> I_J Units: AnalyticaP <br /> J mg/L = milligrams per liter = parts per million (ppm) B, 'r, E, X = benzene, toluene, ethyl benzene, total xylenes <br /> pg/L = micrograms per liter = parts per billion (ppb) TPH-G = total petroleum hydrocarbons quantified as gasoline <br /> (� = Elevated reporting levels are due to high concentration of non-target <br /> analytes requiring smnple dilution <br /> iJ <br /> L . <br /> 4M <br /> Cr 11 CONDOR <br />