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Quarterly Monttonng Report,January 2000
<br /> Canepa's Car Wash(Pacific Avenue)
<br /> February 28,2000
<br /> Page -4
<br /> ILaboratory analyses mdicate that none of the analytes of interest were detected at or above the laboratory
<br /> reported detection limits in the groundwater samples collected from MW-5, MW-6, MW-7, and MW-8
<br />' BTEX and MTBE were detected in the groundwater sample collected from monitor well MW-1 at
<br /> concentrations of 900, 440, 79, 310, and 460 micrograms per liter (µg11), respectively TPH-G was
<br /> detected in the groundwater sample collected from MW-1 at a concentration of 3 6 milligrams per liter
<br /> (mg/1) BTEX, MTBE, and TPH-G were detected in the groundwater sample collected from monitor
<br /> well MW-2 at concentrations of 35,000 µg/1, 2,700 µg/1, 1,300 µg/1, 5,500 µg/1, 81 µg/1, and 90 mg/l,
<br /> respectively BTEX, MTBE, and TPH-G were detected in the groundwater sample collected from soil
<br /> vapor extraction well SV-1 at concentrations of 1,100 µg/1, 34 µg/l, 120 µg/1, 250 µg/l, 1,100 µg/l, and
<br /> 4 1 mg/l, respectively MTBE, and TPH-G were detected in the groundwater sample collected from
<br /> monitor well MW-3 at concentrations of 6 3 µg/1, and 0 09 mg/l, respectively Toluene was detected in
<br /> the groundwater sample collected from monitor well MW-4 at a concentration of 0 9 µg/1 A summary
<br /> of the laboratory analytical results is presented in Table 2 (below) and in Figure 2, Appendix A
<br /> Laboratory report sheets indicating analytical methods used, detection limits, and the results of the
<br /> analyses are included in Appendix C Histoncal groundwater analyses are presented in Table A,
<br /> Appendix B
<br /> TABLE 2
<br /> LABORATORY ANALYTICAL RESULTS (JANUARY 2000)
<br /> B T E X TPH-G MTBE
<br /> Detection limits 03 03 03 06 005 10
<br /> Monitor Well I D µg/1 4g/1 µg/l µg/1 mg/l µg/1
<br /> I1707-MW1-1/15/00 900 440 79 310 36 460
<br /> 1707-MW2-1/14/00 35,000 2,700 1,300 5,500 90 81
<br /> 1707-MW3-1113100 ND ND ND ND 009 6 3
<br /> 1707-MW4-1/14/00 ND 09 ND ND ND ND
<br /> 1707-MW5-1/14/00 ND ND ND ND ND ND
<br /> 1707-MW6-1/14/00 ND ND ND ND ND ND
<br /> I 1707-MW7-1/14/00 ND ND ND ND ND ND
<br /> 1707-MW8-1114/00 ND ND ND ND ND ND
<br /> 1707-SV1-1/15/00 1,100 34 120 250 41 1,100
<br /> Unit Conversions Analytical
<br /> Rg/l parts per billion(ppb) B,T,E X=benzene,toluene,ethyl benzene,and total xylenes
<br /> mg/l parts per million(ppm) TPH-G=total petroleum hydrocarbons quantified as gasoline
<br /> MTBE=Methyl tertiary Butyl Ether
<br /> ND=not detected at or above the laboratory reported detection limit
<br /> 5.0 DISCUSSION OF RESULTS
<br /> The average depth to groundwater measured during the January 2000 groundwater monitoring event was
<br /> approximately 33 3 feet below the monitor well measuring points The groundwater elevation ranged
<br /> L� CONDOR
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