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s � � <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 2186 <br /> 3212 N California Street, Stockton, CA <br /> TPHg=Total petroleum hydrocarbons as gasoline(reported as gasoline range organics(GRO)(C4-C12 as of 4/1/2004)in the analytical report) <br /> TPHd=Total petroleum hydrocarbons as diesel(reported as diesel range organics(DRO)(C10-C36 as of 4/112004)in the analytical report) <br /> MtBE=Methyl tert-butyl ether <br /> TOC=Top of Casing <br /> DO=Dissolved oxygen(post purge value) <br /> bgs=below ground surface <br /> msl=mean sea level <br /> ,ug/L=micrograms per liter <br /> mg/L=milligrams per liter <br /> P/NP=purged/not purged <br /> <=below given laboratory detection limits <br /> --=not measured or analyzed <br /> FP=Free product Measured in feet <br /> S=Sheen NM=Not measured NA=Not analyzed NS=Not sampled <br /> *=Raised MRL due to high analyte concentration requiring sample dilution <br /> **=Reporting limit raised due to matrix interference <br /> [2]=Measured from ground surface <br /> [41=MtBE was analyzed using USEPA Method 8260B <br /> [5]=Chromatogram Pattern Weathered Gasoline C6-C-12 <br /> [61=Sample analyzed outside USEPA recommended hold time <br /> [7]=Hydrocarbon pattern is present in the requested fuel quantitation range,but does not resemble the pattern of the requested fuel <br /> [8)=On the chain-of-custody forms,samples were identified as MW-1 B,MW-213,and MW-313,respectively <br /> [D]=MW-1 (Discrete) <br /> May 2004-The site was surveyed by Morrow Surveying <br /> Data Qualifier Definitions <br /> U=The analyte was analyzed for,but was not detected above the sample reporting limit <br /> J=The analyte was positively identified,the associated numerical value is the approximate concentration of the analyte in the sample <br /> N=The analysis indicates the presence of an analyte for which there is presumptive evidence to make a tentative identification <br /> NJ=The analysis indicates the presence of an analyte that has been tentatively identified and the associated numerical value represents its approximate concentration <br /> UJ=The analyte was not detected above the reported sample reporting limit However the reported reporting limit is approximate and may or may not represent the actual limit of quantitation <br /> necessary to accurately and precisely measure the analyte in the sample <br /> R=The sample results are rejected due to identification or other analytical issues <br /> ND=Not detected above reported detection limit <br /> Report Date October 25,2004 Page 11 of 11 <br /> i <br />