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' TABLE 2 ANALYTICAL TESTING RESULTS ' Montgomery Ward Auto Service Center Former Unocal Branded Service Station#5098 Page 4 of 6 Stockton,California ' parts per billion Sample ID DTW TPH-G Benzene Toluene Ethylbenzene Xylenes 1,2-DCA N1TBE ' 03/29/94 4965 87000 j 14000 17000 1700 9700 220 NA 06/28/94 5512 86000 j 15000 20000 1700 11000 310 # NA 09/14/94 5777 88000 12000 18000 2200 11000 180 NA ' 12/06/94 5226 75000 11000 17000 1500 11000 NA NA 02/08/95 4932 96000 11000 19000 1800 10000 NA j NA 06/21/95 5031 71000 15000 19000 1500 12000 NA NA ' 09/19/95 5249 53000 8700 9500 940 6800 NA j NA 12/19/95 4672 32000 6500 2400 920 4100 NA NA 03/11/96 4322 NS NS NS NS NS NS j NS ' 06/19/96 4541 36000 5900 1000 800 4500 NA j 150 09/17/96 47 52 36000 8300 4500 1100 5600 NA j 390 12/05/96 4258 30000 6500 780 740 4300 NA <1000 03/24/97 NM NS j NS NS NS NS NS NS MW-12 06/03/92 NM 23000 2300 2000 840 1700 92 NA 09/30/92 NM 16000 1700 1000 590 880 24 j NA 12/30/92 NM 23000 3200 I200 560 1800 32 j NA ' 03/25/93 NM 21000 2800 1900 700 1400 <50 j NA 06/28/93 5732 22000 1300 920 500 1800 8 7 j NA 09/29/93 5878 20000 1200 840 660 1400 ND j NA 12/20/93 NM 31000 j 1600 720 320 1900 ND NA 03/29/94 49.48 36000 3400 3500 650 3200 ND NA 06/28/94 5473 25000 760 820 340 2200 <10 NA 09/14/94 5738 23000 1200 720 540 1800 ND NA 12/06/94 5210 20000 j 540 390 150 1200 NA j NA 02/08/95 4918 22000 550 700 280 1400 NA j NA 06/21/95 4997 9600 800 230 300 740 NA NA I 09/19/95 5215 10000 620 160 270 640 NA j NA 12/19/95 4657 8600 830 23 420 280 NA j NA 03/11/96 4311 NS NS NS NS NS NS NS 06/19/96 4499 2500 250 5 9 86 38 NA 89 ■ 09/17/96 4716 2700 2UU 43 13U 150 NA 83 12/05/96 4245 5400 540 39 360 200 NA j 100 03/24/97 NM NS NS NS NS NS NS j NS MW-13 j 06/03/92 NM ND ND ND ND ND 12 NA 09/30/92 NM <50 <0 50 <0 50 <0 50 092 <0 50 NA 12/30/92 NM ND ND ND ND ND ND ��N 03/25/93 NM 1 <50 j <0 50 <0 50 <0 50 <0 SD <0 50 NA Project No 1232 ENVIRONMENTAL AUDIT; INC .