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S � • TABLE 1 GROUNDWATER ANALYTICAL RESULTS,2006 CPT INVESTIGATION Terchert Property 103 North E Street,Stockton,CA Sample Ethyl- Total Depth Date TPHG Benzene Toluene benzene Xylenes MTBE TBA TAME DIPE ETBE 1,2-DCA EDB Sample ID (feet bgs) Collected (}t L) (µ (p ) ) (u (µ (pg/L) (µ (µ L) (µ (g (p ) Boren CPT-5 CPT-5-71W 71 01/28/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <10 <10 <10 22 <2 0 CPT-5-94W 94 01/28/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <10 <10 <10 <1 0 <2 0 Boren CPT-6 CPT-6-68 68 01/29/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <1 0 <1 0 <1 0 <1 0 <2 0 Boring CPT-7 CPT-7-71W 71 01/26/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <1 0 <1 0 <1 0 <l 0 <2 0 CPT-7-80W 80 01/26/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <1 0 <1 0 <1 0 <1 0 <2 0 Boring CPT-8 CPT-8-62W 62 01/27/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <1 0 <l 0 <1 0 22 <2 0 CPT-8-72W 72 01/27/06 <200* <1 0* <1 0* <1 0* <1 0* <1 0* <20* <2 0* <2 0* <2 0* 140 <8 0* CPT-8-81W 81 01/27/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <1 0 <1 0 <1 0 39 <2 0 Bonn CPT-9 CPT-9-71 W 71 01/26/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <1 0 <1 0 <1 0 <1 0 <2 0 CPT-9-78W 78 01/26/06 <50 <0 50 <0 50 <0 50 <0 50 <0 50 <10 <1 0 <1 0 <1 0 <1 0 <2 0 Explanation Analytical Methods TPHG=Total petroleum hydrocarbons as gasoline TPHG analyzed using EPA Method SW80I5B/DHS LUFT Manual BTEX=Benzene,toluene,ethylbenzene,and xyienes BTEX,MTBE,DIPS,ETBE,TAME,TBA,EDB,and 1,2-DCA analyzed using MTBE=Methyl tertiary butyl ether EPA Method SW8260B TBA—Tertiary butyl alcohol 1,2-DCA= 1,2-Dichloroethane Analytical Laboratory DIPE=Di-isopropyl ether Alpha Analytical,Inc (FLAP#2019) ETBE=Ethyl tertiary butyl ether TAME=Tertiary amyl methyl ether EDB= t,2-Dibromoethane µg/L=micrograms per liter *=Reporting limits increased due to high concentrations of target analytes I Teichert CPTanalyhcal Page 2 of 2 3T)ZArU5