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r r r r w �■ r r r r r rr �r r rr r r r r <br /> Table 4 <br /> Historical Analytical Data for Groundwater Well Samples <br /> Former Colombo/Toscana Bakery <br /> 1444 South Lincoln Street <br /> Stockton, California 95206 <br /> Concentration and Associated MCL s(Ng/L) <br /> Monitoring Sampling TPH-g Benzene Toluene Ethylbenzene Xylenes MTBE DIPE ETBE TAME TBA 1,2-DCA 1,2-DBA <br /> Well Date NE (1) (150) (300) (1750) (13) NE NE NE NE (0.5) (0.05) <br /> Travel Blank 10/16/20071 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Travel Blank 1/15/2008 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Travel Blank 4/14/2008 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Travel Blank 7/15/2008 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Travel Blank 10/28/2008 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Travel Blank 1/27/2009 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Travel Blank 4/27/2009 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Travel Blank 7/22/2009 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <br /> Notes: <br /> BOLD=All Positives <br /> pg/L=Micrograms-per-liter. <br /> TPH-g=Total petroleum hydrocarbons quantified as gasoline. <br /> MTBE=Methyl tertiary butyl ether. <br /> DIPE=Di-isopropyl ether. <br /> EfBE=Ethyl tertiary butyl ether. <br /> TAME=Tertiary amyl methyl ether. <br /> TBA=Tertiary butyl alcohol. <br /> 1,2-DCA=1,2-dichloroethane(ethylene dichloride or EDC). <br /> 1,2-DBA=1,2-dibromoethane(ethylene dibromide or EDB). <br /> DUP=Field duplicate sample. <br /> NE=None established. <br /> =Sample labels and chain-of-custody were incorrectly labeled with date of October 4,2007. <br /> Title 22 CCR MCLS=Title 22 California Code of Regulations Maximum Contaminant Levels(June 2004). <br /> 0=Highlighted value exceeds MCL. <br /> S1Share USTSana Lee\ProledavCalifomia\Sto&ton(1444 South Uncdn Sheet)12009_08-Mw Insallation Report\Tables a FigumaT009_o7_D3&Mw Mstaaation Data-Tables.xls Page 6 of 6 <br />