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4 <br /> Former Unocal Service Station #5098 <br /> 5606 Pacific Avenue <br /> Stockton California <br /> TABLE 1 <br /> SUMMARY OF LABORATORY ANALYSES <br /> PIT SAMPLES <br /> (Collected by Kaprealian Engineering, Inc. ) <br /> Sample Depth TPH as Ethyl- <br /> Date # feet Gasoline Benzene Toluene benzene Xylenes 8010 <br /> 9/30/88 PB1 43 <1. 0 <0. 1 <0. 1 <0. 1 <0. 1 ND <br /> 9/30/88 PB2 43 <1. 0 <0. 1 <0. 1 <0. 1 <0. 1 ND <br /> 10/20/88 PB3 45 45 6.6 9. 5 1. 5 6.7 0.210** <br /> 11/03/88 PB3 (50) 50 1. 5 0.3 <0. 1 <0. 1 0. 1 -- <br /> 10/20/88 PB4 45 100 15 37 3 .8 12 0.250*** <br /> 0.280** <br /> 11/03/88 PB4 (5O) 50 1. 3 0.4 <0. 1 <0. 1 0.2 -- <br /> 10/21/88 PB5 47 280 29 54 8.7 48 0. 170*** <br /> 0.910** <br /> 10/21/88 PB6* 50 740 52 52 30 130 0.800*** <br /> 1.000** <br /> 9/30/88 S1 33 4 .8 <0. 1 0. 120 <0. 1 2. 4 ND <br /> 9/30/88 S1A 42 <1. 0 <0. 1 <0. 1 <0. 1 <0. 1 ND <br /> 10/21/88 SW1B 43 <1. 0 <0. 1 <0. 1 <0. 1 <0. 1 ND <br /> 9/30/88 S2 43 <1.0 <0. 1 <0. 1 <0. 1 <0. 1 ND <br /> 9/30/88 S3 42 <1. 0 <0. 1 <0. 1 <0. 1 <0. 1 ND <br /> 10/21/88 SW4 45 360 24 24 9 .5 39 0.076*** <br /> 0. 250** <br /> 11/12/88 SW4 (53) 53 280 2 .4 12 39 42 ND <br /> 11/15/88 SW4A(53) 53 24 4 . 1 3 . 5 1. 0 4 . 1 ND <br /> 10/21/88 SW5 45 39 6. 3 10 0.8 3 .7 0.200*** <br /> 0.460** <br /> 11/12/88 SW5 (53) 53 175 1. 3 7.7 3 . 9 33 ND <br /> 11/15/88 SW5A(53) 53 13 2.6 1. 1 0. 4 1. 6 ND <br /> 10/20/88 SW6 43 38 5.8 7 .2 1. 3 6.9 0. 130** <br /> 11/03/88 SW6 (5O) 50 1. 6 <0. 1 <0. 1 <0. 1 1.2 ND <br /> 10/20/88 SW7 42. 5 14 2 . 4 3 . 0 0.4 2 . 5 0. 190** <br /> 11/03/88 SW7 (5O) 50 16 3 . 0 3 . 3 0.7 5. 3 0. 120** <br /> 10/20/88 SW8 41. 5 4 .4 1.7 <0. 1 <0. 1 1. 3 ND <br /> 10/20/88 SWBA 42 . 5 2. 0 0. 6 <0. 1 0.2 0. 6 ND <br /> 11/03/88 SW8 (5O) 50 <1. 0 <0. 1 <0. 1 <0. 1 <0. 1 ND <br /> 11/11/88 SW9 53 4 .4 0. 3 0.4 0. 1 0.8 ND <br /> 11/11/88 SW10 53 18 0.7 0. 2 0. 4 1.4 ND <br /> ND = Non-detectable for all 8010 constituents. <br /> * PB6 also analyzed for Total Lead (11 mg/kg) and Organic Lead (ND) . <br /> ** DCA (1, 2-Dichloroethane, detection limit 0. 050 mg/kg) . <br /> *** LEVE (2 ,Chloroethylvinyl Ether, detection limit 0. 050 mg/kg) . <br /> - Indicates analysis was not performed. <br /> Results are in milligrams per kilogram (mg/kg) , unless otherwise indicated. <br /> MWB\5098.TBL <br />