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Table 4 Historical Analytical Data for Soil Samples (TPH-g , BTEX, Fuel Oxygenates, and Fuel Additives) Former Colombo / Toscana Bakery 1444 South Lincoln Street Stockton , California 95206 Sample ID Sampling Concentration and Associated RWQCB Residential ESLs (mg/kg) ( Depth bgs) Date TPH-g Benzene Toluene Ethylbenzene Xylenes MTBE TBA DIPE ETBE TAME 1 ,2-DCA 1 , 2-DBA Lead ( 110) (0 . 12) (63) (2.3) (31 ) (30) (3207000) (NE) ( NE) ( NE) (0 .22) (0.019) (NE) SB-1 (16') 2/7/ 1996 < 1 . 0 0.026 0 .021 0.007 0 . 038 NA NA NA NA NA NA NA NA SB-1 (261) 2/7/ 1996 < 1 . 0 0.089 0. 10 0. 006 0 . 034 NA NA NA NA NA NA NA NA SB-1 (36') 2/7/ 1996 3.0 0 . 33 0.35 0. 063 0 .24 NA NA NA NA NA NA NA NA SB-2 (16') 2/7/ 1996 < 1 . 0 0.021 0.027 0. 008 0 . 048 NA NA NA NA NA NA NA NA SB-2 (26') 2/7/ 1996 250 0 . 32 2.2 2 .7 19 NA NA NA NA NA NA NA NA SB-2 (35) 2/7/ 1996 170 0 .590 2.5 1 .8 8 .4 NA NA NA NA NA NA NA NA MW-7 (34.5 ') 10/27/1997 390 2 . 3 14 8 .5 43 0.052 `2 <0 . 020 <0 . 020 <0 . 020 <0 . 020 NA NA NA MW-7 (461) 10/27/1997 19 2 . 9 3.6 0.31 1 .5 <0 . 10*1 NA NA NA NA NA NA NA MW-7 (53 . 5') 10/27/1997 4.0 0 .52 0.79 0.081 0 .37 0 . 050 1' NA NA NA NA NA NA NA MW-7 (63 . 5) 10/27/1997 < 1 . 0 0 .085 <0 . 0050 0.014 0.017 0 . 050*' ' NA NA NA NA NA NA NA MW-7 (731) 10/27/1997 < 1 . 0 0 .041 <0 .0050 <0 . 0050 0 . 0080 0 . 050+1 ' NA NA NA NA NA NA NA MW-7 (79') 10/27/ 1997 1 . 1 0 .061 0. 14 0.030 0 . 15 <0 . 005*2 <0 . 0050 0 .007 1 <0 . 0050 <0 . 0050 NA I NA I NA CPT-1 (125') 12/30/1997 < 1 . 0 <0 . 0050 <0 . 0050 <0 . 0050 <0 . 0050 <0 . 050 NA NA NA NA NA NA NA S:\Shared\UST\Sara Lee\Project\Stockton (Lincoln Street)\2008 Remedial_Subsurface Investigation\2008_08 - Report\Investigation Report & SCM Tables (Rev).xls Page 2 of 11