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0 0 � <br /> Page 17 of 17 <br /> Table 1 <br /> Groundwater Elevation and Analytical Data <br /> ARCO Service Station#2093 <br /> 3425 Tracy Boulevard Tracy CA <br /> Well Depth Groundwater Groundwater Product Ethyl Xylenes <br /> Well Date Elevallon to Water Elevation Elevation Thickness TPHg Benzene Toluene benzene (total) MtBE DO <br /> Number Sampled (I MSL) (ft TOC) (ft MSL) Change(ft) (ft) (u /L) (ug/L) (ugi (uglL) (ug/L) (ug1L) (mg/L) <br /> Notes <br /> TPHg=Total petroleum hydrocarbons as gasoline <br /> MtBE=Methyl Cert butyl ether <br /> DO=Dissolved oxygen <br /> It-feet <br /> MSL-mean sea level <br /> TOC=top of casing <br /> uglL-micrograms per liter <br /> mg/L=milligrams per liter <br /> PlNP=purgedinot purged <br /> TBA=Tnp Blank <br /> =analyzed using EPA method 62608 <br /> A=groundwater elevation corrected by adding 0 77 X product thickness <br /> <=below given laboratory detection limn <br /> =riot measured or analyzed(in case of product thickness none found) <br /> (a)�top of casing altered and casing riot resurveyed water level measured from highest point of casing <br /> 'w Hydrocarbon pattern is present in the requested fuel quantdation range but not resemble the pattern of the requested fuel <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 numencal value is the approwmate 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'tenlatively identified"and the associated numerical value represents its approwmate <br /> concentration <br /> UJ The analyte was not detected above the reported sample reporting limit However,the reported reporting limit is approwmate and may or may not <br /> represent the actual limit of quanittation necessary to accurately and precisely measure the analyte in the sample <br /> R The sample results are rejected due to serious deficiencies m the abij[ty to analyze the sample (i e,the presence or absence of the analyte Cannot be <br /> verified)or the analyte rdentifrcatio i has been rejected(i a the presence of the analyte cannot be verified) <br /> I I <br /> K%Wpr.a W BP ARCOIOPOB Q4 tMyA2 OTA 032®0 a MR 2003 <br />