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�■� r r r r w r w w w r �w <br /> LE 1 <br /> Groundwater Monitoring and Analytical Data <br /> Ranch Market <br /> 23569 South Santa Fe Road <br /> Riverbank,California <br /> Well No/ Ethyl EPA method 8280 B <br /> Elevation Date Benzene Toluene benzene Xylenes TPH-G MTBE TBA DIPE ETBA TAME 1,2 DCA EDB TW- SPT WTE <br /> (TOC)* (pglL) (pg1L) (pglL) (pglL) (Ito/I (pglL) (pglL) (lag/l) (tig/L) (Noll-) (lig1U (NgIL) (ft} (ft) tft} <br /> DW 3 cont 04/01/03 <0 50 <0 50 <0 50 <050 <50 b <050 <20 <0 50 <050 <050 <0 50 cD 50 — - -- <br /> 07l02103 - - --- - - <br /> DW-4 10/07199 - — a <10 <10 <10 <10 <10 -- _ <br /> 12/25/99 <0 3 <0 3 <0 3 <03 <50 a <5 <20 <5 <5 <5 <5 <5 <br /> 04106100 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 08116100 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 11116100 <0 50 <0 50 <0 50 <0 50 <50 b <050 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 01/03101 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 04111/01 <0 50 <050 <0 50 <0 50 <50 b <0 50 <50 <0 50 <0 50 <050 <0 50 <050 <br /> 07/03/01 <0 50 <0 50 <0 50 <0 50 <50 b 1 1 <5 0 <0 50 <0 50 <0 50 <0 50 <050 — <br /> 08I01101 <0 50 <0 50 <0 50 <050 <50 b <050 - — - — <br /> 10l01l01 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <050 <0 50 <0 50 <br /> 01/03/02 <0 50 <0 50 <0 50 <050 <50 b <0 50 <50 <050 <0 50 <0 50 <0 50 <0 50 <br /> 04/05/02 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 <br /> 07112102 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <50 <050 <0 50 <0 50 <0 50 <050 <br /> 10101102 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 — <br /> 01/10/03 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <50 <0 50 <050 <0 50 <050 <0 50 <br /> 04/01/03 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <20 <0,50 <050 <050 <0 50 <0 50 <br /> 07/02/03 <0 50 <050 <0 50 <0 50 <50 b <0 50 <0 50 <0 50 <050 <0 50 <05D <0 50 <br /> Explanation <br /> TOC'=Top of Casing elevation in feet above mean sea level TPH-G=Total petroleum hydrocarbons-as gasoline <br /> "=Feet below top of casing measured from the northerly side MTBE=Methyl-tert butyl ether <br /> pglL=Micrograms per liter TBA=tert Butanol <br /> -=Not sampled/not analyzed/not measured DIPE=Diisopropyl Ether <br /> DTV=Depth to water ETBE=Ethyl-tert-butyl Ether <br /> SPT=Separate phase thickness TAME=tart Amyl Methyl Ether <br /> WTE=Wafer table elevation 1 2-DCA=1 2-Dichloroethane <br /> a=analyzed for TPHg and BTEX ussng EPA methods 8020/8015 EDB=1 2 Dibromoethane <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 NitratelNitnte using EPA method 300 0 DW-1 (08111100)Nitrate as NO3=78,800 uglL and Nitrate as nitrogen=<400 uglL <br /> DW 2(09121100)Nitrate as NO3=60 200 ug1L and Nitrate as nitrogen=13 600 ug1L <br /> DW 2R(01108101)Nitrate as NO3=1 000 ug1L and Nitrate as nitrogen=<400 uglL <br /> f=Matrix Spike/Matrix Spike Duplicate Results associated with samples MW-1 through MW-4 MW-7 &DW 3 for the analyte TBA were affected by the analyte concentrations already present in the unspike <br /> GW data 30-03 1-GW Hydro&Depth 8 of 8 7121/2003 <br />