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Table 5 <br /> Historical Analytical Data for Groundwater Grab Samples <br /> (TPH-g, BTEX, Fuel Oxygenates, and Fuel Additives) <br /> Former Colombo/Toscana Bakery <br /> 1444 South Lincoln Street <br /> Stockton, California 95206 <br /> Concentration and Associated MCLS(Ng/L) <br /> Sampling ID Sampling <br /> (Depth bgs) Date TPH g Benzene Toluene Ethylbenzene Xylenes MTBE TBA DIPE ETRE TAME 1,2-DCA 1,2-DBA <br /> NE (1) (150) (300) (1,750) (13) NE NE NE NE (0.5) (0.05) <br /> CPT-M10(47-52') 4/7/2008 510 3.7 0.68 <0.50 3.2 <0.50 6.9 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> CPT-M10(74-79') 4/7/2008 1,800 310 13 2.4 18 <0.50 22 0.89 <0.50 <0.50 <0.50 <0.50 <br /> CPT-M10(105-115') 4/7/2008 120 <0.50 <0.50 <0.50 <0.50 <0.50 10 3.4 <0.50 <0.50 0.69 <0.50 <br /> CPT-M11 (47-52') 4/10/2008 <50 <0.50 <0.50 <0.50 <0.50 <0.50 150 <0.50 3.8 <0.50 1.4 <0.50 <br /> CPT-M11 (82-87') 4/10/2008 130 1.0 <0.50 <0.50 <0.50 1.1 12 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> CPT-M11 (115-120') 4/10/2008 <50 <0.50 <0.50 <0.50 <0.50 <0.50 <5.0 <0.50 <0.50 <0.50 <0.50 <0.50 <br /> Notes: <br /> ft.bgs=feet below ground surface. 1,2-DBA=1,2-dibromoethane(ethylene dibromide or EDB). <br /> pg/L=Micrograms per liter. 1,2-DCA=1,2-dichloroethane(ethylene dichloride or EDC). <br /> TPH-g=Total petroleum hydrocarbons quantified as gasoline. NA=Not analyzed. <br /> MTBE=Methyl tertiary butyl ether. NE=None established. <br /> TBA=Tertiary butyl alcohol. -1 -Result is by EPA Method 8020. <br /> DIPE=Di-isopropyl ether. -2-Result by EPA Method 8260. <br /> ETBE=Ethyl tertiary butyl ether. '3-Analyte was detected at a concentration below the reporting limit,but above the laboratory n <br /> TAME=Tertiary amyl methyl ether. detection limit. Reported value is estimated. <br /> Title 22 CCR MCLS=Title 22 California Cade of Regulations Maximum Contaminant Levels(June 2004). <br /> =Highlighted value exceeds MCL. <br /> S:\Sharetl USnSwa LeeTrolecm\Cafifomia\Stocklm(1694 Somh Line Sfreet)2009_08-MW InstaHation Repod\Tabks&Figured 009_07_W&MW Instaflabon Data-Tables.xls Page 4 of 4 <br />