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TABLE 'I <br /> Groundwater Monitoring and Analytical Data <br /> Ranch Market <br /> 23569 South Santa Fe Road <br /> Riverbank California <br /> Well No I Ethyl- EPA method 8260 B <br /> Elevation Date Benzene Toluene benzene Xylenes TPH-G MTBE TBA DIPE ETSE TAME 1,2-DCA EDS DT–W-- SPT WTE <br /> (Tac)` (Pg1L) (lag/L (uglL) (pgIL) (P91L (NgIL) (laglL) (ugll) 9/L (p9rL) (Ug/Li ( g1L) (ft) (if) (ft) <br /> DW-3 cont 01/03/02 <0 50 <0 50 <0 50 <050 <50 b f <0 50 <50 <0 50 <0 50 <0 50 <0 50 <0 50 – <br /> 04/05/02 - - <br /> 07112/02 <0 50 <050 <050 <0 50 <50 b <0 50 <50 <0 50 <0 50 <0 50 <0 50 <0 50 – - – <br /> 10/01102 <br /> 01/10/03 – <br /> 04/01103 <0 50 <0 50 <0 50 <050 <50 b <0 50 <20 <0 50 <0 50 <0 50 <0 50 <0 50 – <br /> 07102l03 <br /> 10/02/03 <050 <0 50 <0 50 <0 50 <50 <0 50 <100 <0 So <050 <050 — <br /> DW-4 10/07/99 - -- a <10 <10 <10 <10 <10 <br /> 12125/99 <0 3 <G3 <0 3 <0 3 <50 a <5 <20 <5 <5 <5 <5 <5 – <br /> 04l06100 <0 So <0 50 <0 50 <0 50 <50 b <0 50 <50 <0 50 <0 50 <0 50 <0 50 <0 50 – – - <br /> 08116/00 <050 <0 50 <0 50 <050 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <050 <0 50 – – <br /> 11116l00 <050 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <050 <0 50 <0 50 <0 50 - <br /> 01/03/01 <0 50 <050 <050 <050 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 – <br /> 04/11101 <0 50 <0 50 <0 50 <050 <50 b <050 <50 <0 50 <0 50 <0 50 <0 50 <050 - <br /> 07/03/01 <0 50 <0 50 <0 50 <0 50 <50 b 11 <50 <0 50 <0 50 <0 50 <0 50 <0 50 – – <br /> 06/01/01 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 – _ _ <br /> 10101/01 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <50 <050 <050 <0 50 <050 <0 50 - - <br /> 01l03102 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <50 <0 50 <0 50 <0 50 <050 <050 – <br /> 04/05/02 <0 50 <050 <0 50 <050 <50 b <0 50 <50 <0 50 <0 50 <0 50 <050 <0 50 – <br /> 07l12102 <0 50 <0 50 <0 50 <050 <50 b <0 50 <50 <0 50 <0 50 <0 50 <G50 <0 50 <br /> 10/01/02 <0 50 <050 <0 50 <050 <50 b <0 50 <50 <0 50 <0 50 <0 50 <0 50 <050 <br /> 01/10103 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <50 <05G <0 50 <0 50 <050 <0 50 – <br /> 04/01/03 <0 50 <0 50 <0 50 <050 <50 b <0 50 <20 <050 <0 50 <0 50 <0 50 <0 50 – <br /> 07/02103 <0 50 <0 50 <0 50 <0 50 <50 b I <0 50 <050 <050 <0 50 <0 50 <0 50 <0 50 – <br /> 10102103 No sampte Well not accessable _ <br /> Explanation <br /> TQC`=Top of Casing elevation in feet above mean sea level TPH G=Total petroleum hydrocarbons as-gasoline <br /> Free floating product present No groundwater sample was collected MTBE=Methyl tent butyl ether <br /> `=Feet below top of casing measured from the northerly side TBA=tert-Butanol <br /> NgIL=Micrograms per liter DIPE=Dusopropyl Ether <br /> –=Not sampled/not analyzedlnot measured ETBE=Ethyl-tert-butyl Ether <br /> DTW=Depth to water TAME=tert-Amyl-Methyl Ether <br /> SPT=Separate phase thickness i 2-DCA=1 2-Dichlorcethane <br /> WTE=Water table elevation EDB=1 2 Dibromoethane <br /> a=analyzed for TPHg and BTEX using EPA methods 802018015 <br /> b=analyzed for BTEX&Oxygenates using EPA method 8260B <br /> c=Grab water sample collected <br /> d=Well resampled to confirm presence of toluene reported in first water sample collected after well installation <br /> e=Analyzed for NitratelNdnte using EPA method 300 0 DW 1 (08111100)Nitrate as NO3=78 800 ug1L and Nitrate as nitrogen=<400 uglL <br /> DW-2(09121100)Nstrate as NO3=60 200 ug1L and Nitrate as nitrogen=13 600 ug1L <br /> DW-2R(01108101)Nitrate as NO3=1 000 uglL and Nitrate as nitrogen=<400 ug1L <br /> f=Matrix SpikelMatnx Spike Duplicate Results associated with samples MW 1 through MW 4 MW 7 &DW-3 for the analyte TBA <br /> were affected by the analyte concentrations already present in the unspked sample <br /> GW data 40-03 As 1-GW Hydro&Depth 8 of 8 10/2212003 <br />