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rl <br /> 4 li <br /> completed on June 14, 2001 At that time, GAC canisters #1 and #2 were <br /> replaced with 2,000 pounds each of virgin carbon <br /> Hydrocarbon Breakthrough <br /> Based on analytical results of the water sample collected from GAC #1 on <br /> May 2, 2001, ASE became aware that TBA and MTBE had broken through <br /> the first carbon vessel Based on analytical results of the water sample <br /> collected from GAC #2 on May 31, 2001, ASE became aware that TBA h a d <br /> broken through the second carbon vessel The GAC #3 sample on May 31 , <br /> 2001 and on June 8, 2001 showed no breakthrough At no time during <br /> the month of June 2001 were any petroleum hydrocarbons discharged to <br /> the Manteca Sanitary Sewer Line <br /> Law Rate. <br /> During the month of June 2001, the system treated 208,960 gallons of <br /> groundwater While operating, the system extracted, on average, <br /> approximately 5 gallons of contaminated groundwater per minute <br /> EFFLUENT ANIS INFLUENT SAMPLE COLLECTION AND ANALYSES <br /> • ESf-Luent Water Samj2l e. <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 a full scan EPA Method <br /> 8260B, which includes total petroleum hydrocarbons as gasoline (TPH-G), <br /> benzene, toluene, ethylbenzene, and xylenes (collectively known as BTEX), <br /> and the seven fuel oxygenates, and for TPH as diesel by EPA Method 8 015 <br /> At no time during this month's operation, did the effluent entering the <br /> sewer line contain any detectable concentrations of any of the compounds <br /> tested The effluent water sample analytical reports and chain of custody <br /> records are attached in Appendix B <br /> Influent ..Water— Sample <br /> On June 14, 2001, ASE collected an influent water sample (INF 06-14-01) <br /> This sample was analyzed by Kiff Analytical of Davis, California (ELAP <br /> #2236) for a full scan EPA Method 8260B and for TPH as diesel by EPA <br /> Method 8015 The analytical results for this sample are tabulated in t h e <br /> Tables Section of this report as Table One The influent water sample <br /> Frank's One Stop Remediation System Monthly Report — June 2001 <br /> -2- <br />