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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 (50) 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 (50) 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 (50) 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 (50) 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 /> *** CEVE (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 />