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TABI# <br /> Historical Groundwater Monitoring and Analytical Data <br /> Ranch Market <br /> 23569 South Santa Fe Road <br /> Riverbank,California <br /> Well NoJ Ethyl- EPA 8424 EPA method 8260 B <br /> Elevation Date Benzene Toluene benzene xylenes TPH-G MTBE MTBE TBADIPS ETBA TAME 1,2-DCA EDB DTW** SPT WTE <br /> (TOC}* (Fg/I-) (ILgIL) (AVL) (!tom) (ltd-) (Yg/T} (AgIL} fl+gn-} {!tom) (kms-) {1�1�-} (AgIL) (Ili) (ft) (fr) { ) <br /> W-3 10/07/99 -- -- -- -- -- a -- <10 <10 <10 <10 <10 -- <br /> 10736 <br /> -10736 12/25/99 <0 3 <0 3 <0 3 <03 <50 a <5 <20 <5 <5 <5 <5 <5 -- -- <br /> 04106/00 <0 50 <0 50 <0 50 <0 50 <50 b <0 50 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 -- --08/16/00 <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 /> W-4 10/07/99 -- -- -- -- -- a -- <10 <10 <10 <10 <10 -- -- -- - <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 /> 08/16/00 <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 <br /> TQC*=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 /> µg/L=Micrograms per liter TBA=tert-Butanol <br /> --=Not sampledtnot analyzed/not measured DIPE=Di-isopropyl Ether <br /> DTW=Depth to water ETBE=Ethyl-tert-butyl Ether <br /> SPT=Separate-phase thickness TAME=tort-Amylmethyl Ether <br /> WTE=Water table elevation 1,2-BCA=l,2-Dichloroethane <br /> a=analyzed for TPHg,BTEX EPA methods 8020/8015 EDB=1,2-Dibrornoethane <br /> b=analyzed for TPHg BTEX,&Oxygenates using EPA method 8260B <br /> c=No purge water sample bailed from well <br /> d=depth below grade,discrete water sample collected,hydropunch attached to drive rod,sample bailed through rods <br /> e=depth below grade discrete water sample collected using Maxi-Simulprobe attached to drive rod <br /> f=depth discrete grab sample prior to well installation <br /> Ig=Well resampled to confirm presence of BTEX,TPH&and MtBE reporting in first water sample collected after well installation <br /> File P%lectlRiverbanklTablcsl RB 00-3Q-GW-I xis Page 3 of 3 11/3/2000 <br />