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TABLE 2-2 <br /> Concentrations of Petroleum Hydrocarbons in Ground Water (ug&) <br /> H.J. Heinz Co.,Tracy, CA <br /> All Samples Collected September 3,1997 <br /> TPH- <br /> TPH- TPH-Motor Unknown Xylenes- <br /> Sample# Gasoline TPH-Diesel Oil Hydrocarbon"`* Benzene Toluene Ethylbenzene Total VOCs-TCL <br /> UST1N 460,000 <50,000 (o) <50,000(o) 430,000 I 650 8,600 4,100 14,000 NA <br /> USTg4 67,000* 2,500(o) 2,500(o) 9,500 1,600 <250_ 5,900 _ 8,500 NA <br /> Trip Blank NA NA NA NA NA NA NA NA All ND <br /> California MCLS 1 680 1,750 <br /> E <br /> NO 1 ES <br /> TPH-gasoline analysis performed using California LUFT Methodology(October 1989) <br /> TPH-diesel analysis performed using California Tri-Regional Methodology <br /> Method 5030(purge and trap) is used for gasoline sample preparation/introduction <br /> Method 3550(sonication)or Method 3510(reparatory funnel liquid-liquid)is used for diesel/motor oil sample extraction/preparation <br /> EPA Method 8260 used for Volatile Organics-TCL analysis <br /> EPA Method 8020 used for benzene, toluene,ethylbenzene,and total xylenes(BTEX)analysis <br /> Bolded values exceed MCLS <br /> NA-Not analyzed <br /> <=Analyte not detected at reporting limit shown <br /> *-The peak pattern present in this sample does not exactly match the gasoline reference standard,and appears to be <br /> degraded gasoline Quanhtation is based upon a gasoline reference in the range of n-007 to n-C12 <br /> **-The hydrocarbon pattern present in these samples represents an unknown mixture atypical of diesel fuel or motor oil in the range <br /> of n-008 to n-C40 Quantitation is based on a diesel reference between n-C10 and n-C24 only <br /> ND-Parameter not detected above laboratory reporting limits(variable) <br /> G-Laboratory reporting limits raised due to matrix interference <br /> o-Laboratory reporting limits raised due to high level of analyte present in sample <br /> I <br />