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TABLE 11 GROUNDWATER ANALYTICAL RESULTS AND MONITORING DATA Southland Site No. 20304 455 Grant Line Road,Tracy, California f - >rrw srsr vlrrr: : 1t�Il7r 1<A TPH ET 13errn 'Ioluerte benzene : Xylenes MW-13 07/20/88 ND - ND ND ND NO - 3.89 0.00 21.71 03/21/89 NO - ND ND ND NO -- 3.23 0.00 22.37 25.60 06/10/91 ND - ND NO ND NO --- 4.04 0.00 21.56 09/12/91 ND - ND NO NO ND <2 4.74 0.00 20.86 12/30/91 ND -- NO ND ND ND <2.2 3.74 0.00 21.86 03/31/92 ND - NO ND ND NO <2 3.38 0.00 22.22 06/19/92 NO --- ND ND ND NO <2.2 4.24 0.00 21.36 09/21/92 ND - NO ND ND NO --- 4.43 0.00 21.17 12/28/92 <10 - <0.3 <0.3 <0.3 <0.5 --- 3.26 0.00 22.34 03/11/93 - - - - - - - 3.01 0.00 22.59 06/17/93 --- - -- - --- - -- 3.58 0.00 1 22.02 MW-14 07/20/88 ND - NO ND ND ND - 4.69 0.00 21.94 03/21/89 ND --- ND ND ND NO - 4.04 0.00 22.59 26.63 06/10/91 NO - NO ND ND NO - 4.92 0.00 21.71 09/12/91 NO --- NO ND ND NO <2 5.60 0.00 21.03 12/30/91 ND - NO NO ND NO <2.2 4.60 0.00 22.03 113/31/92 ND - NO NO NO NO 2 4.24 0.00 22.39 06/19/92 ND -- NO ND ND NO 9.2 6.07 0.00 20.56 . 09/21/92 NO - NO ND ND ND <2.2 6.30 0.00 20.33 12/28/92 <10 <0.3 <0.3 <0.3 <0.5 4.12 0.00 22.51 03/11/93 - - - - -- - - 3.80 0.00 22.83 06/17/93 - --- --- --- - - - 4.41 0.00 1 22.22 MW-15 07/20/88 NO NO ND ND ND - 3.63 0.00 21.75 03/21/89 ND ND NO NO ND --- 2.99 0.00 22,39 25.38 06/10/91 ND NO ND ND NO -- 3.84 0.00 21.54 09/12/91 NO NO ND ND ND - 4.49 0.00 20.89 12/30/91 NO NO NO ND NO <2 3.49 0.00 21.89 03/31/92 ND ND ND ND ND <2.2 3.17 0.00 22.21 06/19/92 NO NO ND ND ND <2.2 4.03 0.00 21.35 09/21/92 NO NO NO NO NO - 4.18 0.00 21.20 12/28/92 <10 <0.3 <0.3 <0.3 <0.5 <2.2 3.02 0.00 22.36 03/11/93 <50 - <0.3 <0.3 <0.3 <0.6 - 2.80 0.00 22.58 06/17/93 <10 - 1 <0.3 f <0.3 1 <0.3 1 <0.5 - 3.351 0.00 1 22.03 TPH-G = Total petroleum hydrocarbons-as-gasoline TPH-D = Total petroleum hydrocarbons-as-diesel fuel DTW - Depth to groundwater SPT - Separate-phase hydrocarbon thickness WTE = Water table elevation in feet above mean sea level --- = Not applicable/not analyzed * Monitoring well MW-7 was abandoned March 1989. Wells MW 1 through MW-4, MW-6,and MW-8 were analyzed for ethylene dibromide during November 1986. The analytical results reported no detectable concentrations. Data from November 19W to September 1992,were taken from Quarterly Fluid-Level Monitoring and Groundwater • Sampling Report,October 15, 1992(Alton-Geoscience). 37678043.020 Page 5 of 5 GROUNDWATER � �TECHNOLOGY, INC.