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Stockton Taxi Cab/Sunland Gasoline September 16, 2003 2085 Prem ont Street,Stockton, California Page 5 I Report of Findings: Lateral and Vertical Extent of Soil and Groundwater Contamination • 4.3 Boring B-5 The soil analytical results from B-5 are shown below in tabular form. tkm 5 2, ' SaT21e ID Gas Benzene Toluene E-Benzene Xylene Lead MTBE 1,2-DCA B-5 @ 30.0' 1.0 16" 12;:•' 29 124:' NIA -114 .11- B-5 40.0' 8.2 .704' : 1,810', 253'':;. .1 40 $.1 . . 95 D 70 1 B-5 50.0' 55 904 .'3116 1,310- 6940' NIA 147,: " I� B-5 2 60.0' ND ND ND ND ND NIA 112' B-5 @ 70.0' 1.1 69 Ill 24 95 NIA ND `25 All other analytes were not detected at or above the reporting limits. See Table 1 and 2 for the complete tabular summary of the soil data for B-5. 4.4 Monitoring Well MW-.l The soil analytical results from MW-1 are shown below in tabular form. Sample ID Gas Benzene Toluene E-Benzene Xylene EDB 1,2-DCA MW-1 @ 20.0' ND ND ND ND ND ND ND MW-1 @ 25.0' 3:2 ' ND is;:.. ND .,,',= 230',:- c`21';' ND 1i MW-1 2 38.0' #17 ; 26 i 288 ' 45-r + ct "391`"} ND ND MW-1 @ 55.0' 30 "'316•- -1 758 4,.. : ._267.•f .', . 164fla .4 ND ;108 MW-1 60.0' 238' ::; F 954 :--,' !,,.'4,360 (,A; :2 60, _ :w+ 12 600w•<•. ND ::,434- •, ' MW-1 @ 70.0' 44" �: °•1,'170: 1 120'` �;; :334 =� '41 56fl'.,'�, ND MW-1 shows the presence of a significant concentration of benzene in the soil 1 samples especially below the soil-groundwater interface. See Table 1 and 2 for a complete tabular summary of the soil analytical data for MW-1. ' 4.5 Monitoring Well MW-2 ' The soil analytical results are summarized in the table below. Sample ID Gas Benzene Toluene E-Benzene Xylene MTBE 1,2-DCA ' MW-2 @ 20.0' ND ND ND ND ND ND ND MW-2 @30.0' ND ND ND ND ND ND ND MW-2 40.0' 756 k.2 50 5100:-"-:`1-- ;3=220 r. �' ,48 00 '= MW-2 55.0' ND ND ND ND ND 'f.r MW-2 9,6501 ND ND ND ND ND ND )x•16 y MW-2 contains relatively high levels of benzene at a depth of forty feet (40'). MTBE is also present near the soil-groundwater interface. See Table 1 and 2 for a complete tabular summary of the soil analytical data for MW-2.