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i ii i i i i i0% r i i i i i i i <br /> Project NaC75-06-24A <br /> September 11,2002 <br /> Page 2 of 2 <br /> TABLE 1 <br /> SUMMARY OF GROUNDWATER ELEVATION AND ANALYTICAL DATA <br /> STOCKTON MAINTENANCE STATION <br /> SAN JOAQUIN COUNTY,CALIFORNIA <br /> Notes TOC=Top of Casing <br /> MSL=Mean Sea Level <br /> j TPHg=Total petroleum hydrocarbons as gasoline <br /> TPHd=Total petroleum hydrocarbons as diesel <br /> BTEX=Benzene,toluene,ethylbenzene and total xylenes <br /> MTBE=Methyl tert-butyl ether by EPA Test Method 8260 <br /> FOCs=Tert-amyl methyl ether(TAME),ethyl tert-butyl ether(ETBE),di-isopropyl ether(DIPE)and tert-butanol(TBA)following EPA Test Method 8260 <br /> µg/l=Micrograms per liter <br /> ND=Not detected above the laboratory test method detection limit <br /> <=Less than laboratory method detection limit <br /> '="Sample contains hydrocarbons that do not match the diesel pattern However,quantification is based on a diesel standard <br /> I <br /> i <br />