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Table 2 <br /> Historical Groundwater Monitoring and Analytical Data - <br /> Ranch Market <br /> 23569 South Santa Fe Road <br /> Riverbank,California <br /> Well NoJ Ethyl- EPA 8020 EPA method 8260 B <br /> Elevation Date Benzene Toluene benzene Xylenes: ,-TPH-G MTBE -MTBE TBA DIPE- ETBA ..TAME 1,2-DCA EDB FDTW-- SPT WTE <br /> (EoG)' WIL) (OWL) .(µSRL) ,(pg/L)'. " (gg/L) (µg/L) (µg/L) (pgL)-. (i-g/L) (pg/L) (Pg/L) (Pg/1-) (PP�1-) (ft) <br /> Domestic Wells <br /> DW-1 <br /> 01/23/98 <3.0 <3.0 <3.0 <3.0 <50 a -- ND ND ND ND NO -- -- -- -- -- <br /> 12/25/99 <0.3 <0.3 <0.3 <0.3 <50 a -- <5 <20 <5 <5 <5 <5 <5 -- -- -- <br /> 04/06/00 <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 /> DW-2 <br /> 10/07/99 - - - - - a - 38 QO <Lp <LO <1.0 -- -- -- -- -- <br /> 11/03/99 - - a - 58 __ __ __ __ __ __ <br /> 12/25/99 <0.3 <0.3 <0.3 <0.3 <50 a -- 11 <20 <5 <5 <5 <5 <5 -- -- - <br /> 04/06/00 <0.50 <0.50 <0.50 0.77 <50 b,c -- 7 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 27.15 -r <br /> F04/O6/00 <br /> - - - - - a - <1.0 <10 <I.0 <1.0 <1.0 -- --<0.3 <0.3 <0.3 <0.3 <50 a -- <5 <20 <5 <5 <5 <5 <5<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 /> - - - - - a - <I.0 <10 <I.0 <1.0 <LO -- -- -- -- -- <br /> 12/25/99 <0.3 <0.3 <0.3 <0.3 <50 a -- <5 <20 <5 <5 <5 <5 <5 -- -- -- <br /> 04/06/00 <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 /> EXPLANATION Page 2 of 2 <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 /> pg/L=Micrograms per liter TBA=tert-Butanol <br /> --=Not sampled/not analyzed/not measured DIPE=Di-isopropyl Ether <br /> DTW=Depth to water ETBE=Ethyl-tert-butyl Ether <br /> SPT=Separate-phase thickness TAME=ten-Amylmethyl Ether <br /> WTE=Water table elevation 1,2-DCA-1,2-Dichloroethane <br /> a=analyzed for TPHg,BTEX EPA methods 8020/815 EDB= 1,2-Dibromoethane <br /> b=analyzed for TPHg,BTEX,&Oxygenates using EPA method 8260B <br /> c=No purge water sample bailed from well. <br /> File aivcrbenkUablcs L,2-00 As <br />