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TABLE 2 ANALYTICAL TESTING RESULTS ' Montgomery Ward Auto Service Center Former Unocal Branded Service Station #5098 Page 2 of 7 Stockton, California ' parts per billion ' Sample 1D DTW TPH-G Benzene Toluene Ethyllenzene Xylenes 1,2-DCA MTBE 06/18/97 4415 27700 1210 3900 544 3890 <50 <200 MW-3 ' 02/08/95 4928 100000 15000 20000 2500 12000 480 NA 06/21—/-95 —T 5054 130000 17000 21000 2600 12000 400 NA 09/19/95 5310 84000 13000 16000 2000 9900 390 NA 12/19/95 4657 86000 13000 17000 2000 9000 270 NA 03/11/96 4301 86000 15000 18000 1900 9500 200 <5000 06/19/96 4553 90000 16000 22000 2200 12000 200 <6000 09/17/96 4848 95000 ! 11000 21000 2600 12000 120 <3000 12/05/96 4314 32000 , 5700 7600 980 4600 39 <2000 03/24/97 4057 34000 5800 4300 1000 4200 11 <600 06/18/97 4316 82400 7510 11000 1560 6950 50 <200 MW-4 02/08/95 5016 66000 I 11000 7400 1800 4700 270 NA 06/21/95 5160 95000 13000 11000 2100 8000 300 NA 09/19/95 5402 85000 14000 15000 2200 9600 260 NA I 12/19/95 4690 85000 14000 14000 2100 8200 130 1 NA 03/1I/96 4326 28000 7400 1700 1000 3800 11 <2000 06/19/96 4644 66000 9900 5300 2100 12000 110 <3000 I 09/17/96 4883 77000 i 10000 13000 2000 8300 <1 <2000 12/05/96 4302 55000 10000 9400 1700 7100 12 <2000 03/24/97 4148 41000 8700 480 1500 6600 8 6 <2000 06/18/97 4448 82800 7980 8530 1650 7440 95 <100 MW-5 02/08/95 4997 320 <0 5 12 <0 5 <0 5 2 2 NA I06/21/95 5140 130 1 5 <0 5 059 <0 5 3 1 NA 09/19/95 5400 260 095 <0 3 2 1 <0 6 4 2 NA 12/19/95 4768 200 10 1 1 7 5 <0 6 10 NA 03/11/96 4372 1 170 088 086 1 <0 5 1 8 24 <50 06/19/96 4657 120 <0 5 <0 5 054 <0 5 095 <30 09/17/96 4933 240 062 <0 5 3 9 1 9 70 <30 I 12/05/96 4372 220 061 <0 5 <0 5 <0 5 6 0 <30 ,,[1 03/24/97 4170 <50 <0 5 <0 5 <0 5 <0 5 22 <30 06/18/97 4430 <50 0 4 <0 3 0 4 <0 6 6 3 <2 0 MW-6 02/08/95 4992 3400 410 140 110 91 29 NA 06/21/95 .5056 1800 140 51 1 33 34 14 NA 09/I9/95 1 5299 1 5300 200 1 77 44 1 23 1 11 NA Project No 1232 ENVIRONMENTAL AUDIT, INC .