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Based on analytical results of the water sample collected from GAC #1 on <br /> November 2, 2001, ASE became aware that hydrocarbons had broken <br /> through the first carbon vessel The GAC #2 sample collected on that day <br /> and the remainder of the month showed no breakthrough At no time <br /> during the month of November 2001 were any petroleum hydrocarbons <br /> discharged to the Manteca Sanitary Sewer Line See the analytical report <br /> attached in Appendix B <br /> Flow Rate <br /> During the month of November 2001, the system treated 169,020 gallons <br /> of groundwater While operating, the system extracted, on average, <br /> approximately 4 gallons of contaminated groundwater per minute <br /> gFFjjjyNT ANp INFIXENT SAMPLE COLLECTION AND ANALYSES <br /> Eff-Luent Water Sammi <br /> Water samples were collected and analyzed on a weekly basis by ASE to <br /> determine the performance of the GAC vessels, per the City of Manteca <br /> Sewer Discharge Permit The samples were collected from the effluent <br /> side of the various GAC vessels When GAC #1 and GAC #2 were sampled, <br /> • ASE also collected a sample from the next vessel in series and placed it on <br /> HOLD at the laboratory, as a back-up in case the sample being analyzed <br /> showed breakthrough All of these samples were analyzed by Kiff <br /> Analytical of Davis, California (ELAP #2236) for total petroleum <br /> hydrocarbons as gasoline (TPH-G), benzene, toluene, ethylbenzene, and <br /> xylenes (collectively known as BTEX), and the five fuel oxygenates by EPA <br /> Method 8260B At no time during this month's operation, did the effluent <br /> entering the sewer line contain any detectable concentrations of any o f <br /> the compounds tested The effluent water sample analytical reports a n d <br /> chain of custody records are attached in Appendix B <br /> Influent W ter Sam. <br /> On November 30, 2001, ASE collected an influent water sample (INF 11 - <br /> 30-01) This sample was analyzed by Kiff Analytical of Davis, California <br /> (ELAP #2236) for TPH-G, BTEX, and the five fuel oxygenates by EPA Method <br /> 8260B The analytical results for this sample are tabulated in the Tables <br /> Section of this report as Table One The influent water sample analytical <br /> report and chain of custody record is attached in Appendix B A graph <br /> showing the historical TPH-G concentrations in the influent water samples <br /> is attached in the Graph Section of this report <br /> Frank's One Stop Remediation System Monthly Report — November 2041 <br /> -2- <br />