Laserfiche WebLink
i <br /> TA <br /> Historical Groundwater Monitoring and Analytical Data <br /> 7-Eleven Store#14117 <br /> 2725 Country Club Boulevard <br /> Stockton,CA <br /> Well IDI Ethyl- MtBE 1,2- Dissolved <br /> Elevation Date Benzene Toluene Benzene Xylene TPHg 8020 MtBE TBA DIPS EtBE TAME DCA EDB Notes Oxygen DTW SPT WTE <br /> TOC IL IL IL IL IL IL IL IL IL IL !L IL !L m !L feet feet feet <br /> MW-7 <br /> 1 19 11/05/01 <0 5 <0 5 <0 5 <0 5 <50 -- <5 <20 <5 <5 <5 <5 <5 1 0 1020 000 -901 <br /> 1 53 01/08/02 -- -- -- -- -- -- — -- -- -- -- -- -- 09 -- 000 -- <br /> 04/12/02 <0 5 <05 <0 5 <0 5 <50 <5 24 <5 <0 5 <0 5 <0 5 - -- 10 747 000 -594 <br /> 07/09/02 <0 5 <0 5 <0 5 <0 5 <50 <5 24 <5 <0 5 <0 5 <0 5 - -- 1 1 790 000 -637 <br /> 10/16/02 <0 5 <0 5 <0 5 <0 5 <50 <5 052 15 <0 5 <0 5 <0 5 — -- 10 943 000 -790 <br /> 03/17/03 <0 50 <0 50 <0 50 <0 50 110 -- 86 <5 0 <0 50 <0 50 <0 50 -- -- 12 767 000 -614 <br /> 05/29/03 <0 50 <0 50 <0 50 <0 50 <50 - 421 <5 0 <0 50 <0 50 <0 50 -- — 14 794 000 -641 <br /> E,_px lanation <br /> TPHg=Total petroleum hydrocarbons-as-gasoline TAME=Tert-amyl-methyl ether TOC=Top of casing elevation m feet above mean sea level <br /> MtBE=Methyl-tert-butyl ether 1 2-DCA=1,2-dichloroethane pg/L=micrograms per liter <br /> TBA-Tert-Butanol EDB=1 2-dibromoethane mg[L=milligrams per liter <br /> DIPE=Dnsopropyl ether DTW=Depth to water ft=feet <br /> EtBE=Ethyl-tert-butyl ether SPT=Separate-phase hydrocarbon thickness --=Not sampled/not measured <br /> WTE=Water table elevation <br /> Notes <br /> Historical data prior to 03/17103 sample date provided by Shaw E&I BTEX TPHg and MtBE analyzed using EPA Method 8020/8015 Modified <br /> All samples analyzed using EPA Method 8260B starting with 03/17/03 sample date <br /> a=Method Blank Contamination The associated method blank contains the target analyte at a reportable level <br /> b=Matrix Spike/Matnx Spike Duplicate for the analytes Benzene MtBE was affected by the analyte concentrations already present in the un-spiked sample <br /> 117-ElevenW-11 Stores1141171Tables114117 03 2Q xlsHistoncal Water Page 6 of 6 <br />