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10 0 Table 1 • + <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station No 434 <br /> 501 W Kettleman Lane Lodi California <br /> Well Depth Groundwater Groundwater Ethyl- Xylenes <br /> Well Date Elevation to Water Elevation Elevation TPI-Ig Benzene Toluene benzene (total) MtBE DO O&G <br /> Number Sampled (ft,MSL) (ft,TOC) (ft,MSL) Change(ft) (µ91L) (µ9/L) (14911L) (µg/L) (µ91L) (191)_ _ (mg/L) (mglL} <br /> Trip 5/11/2001 <50 <0 5 <0 5 <05 <0 5 <2 <br /> Blank 9/12/2001 — <50 <0 5 <0 5 <0 5 <0 5 <br /> 12/14/2001 <50 <0 5 <0 5 <05 <0 5 <br /> 3/11/2002 <50 <0 5 <0 5 <0 5 <0 5 <br /> 6/20/2002 - <br /> Notes <br /> (a) = sample analyzed for total lead using BPA Method 6010 and chlorinated hydrocarbons using EPA Method 624 analytes reported as nondetectabfe <br /> < = below given laboratory detection limit <br /> not measured or analyzed <br /> = analyzed using EPA Method 8260 <br /> DO - Dissolved oxygen <br /> ft = feet <br /> mg/L = milligrams per liter <br /> MSL = mean sea level <br /> MtBE = Methyl Cert butyl ether <br /> O&G = Oil&grease <br /> P/NP = purged/not purged <br /> TOC = top of casing <br /> TPHg = Total petroleum hydrocarbons as gasoline <br /> ug/L = micrograms per titer <br />` Data Qualifier Definitions <br /> f 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 <br /> 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 <br /> represent the actual limit of quantitation necessary to accurately and precisely measure the analyte in the sample <br /> R The sample results are refected due to serious deficiencies in the ability to analyze the sample (i a the presence or absence of the analyte cannot be <br /> verified)or the analyte identification has been rejected(i e,the presence of the analyte cannot be verified) <br /> ND Not detected above reported detection limit <br /> K9Wp,000-U5 BP AACM004344Quaft 3 QTR 031434 GWMR 3003 3 of 3 <br />