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4 <br /> ` 1480U West Frontage Road Manteca.Caffforrna <br /> WATER SAMPLING AND ANALYSIS <br /> On July 28, 1992, Aegis personnel collected groundwater samples from wells MW-1 <br /> through MW-9 The samples were collected according to the Aegis SOP included in <br /> Attachment 1, and delivered under chain-of-custody to NET Pacific, Inc , of Santa Rosa, <br /> California, a state-certified analytical laboratory The samples were analyzed for <br /> concentrations of <br /> • total petroleum hydrocarbons (TPH), as gasoline, by GC-FID/EPA Methods <br /> 5030/8015, and, <br /> • benzene, toluene, ethylbenzene, and total xylenes by EPA Method 8020 <br /> The analytical results are summarized in Table 2 The laboratory analytical reports and <br /> chain-of-custody forms are included in Attachment 2 A map showing TPH, as gasoline, <br /> and benzene distributions on July 28, 1992, is included as Figure 5 <br />• <br /> 90-097C QMR -3- <br />