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TABLE I GROUNDWATER ANALYTICAL RESULTS AND MONITORING DATA Southland Site No. 20304 455 Grant Line Road, Tracy, California jT:... (ft ............... benzene .. Colrforrn MW-3 11/86 NO - NO NO NO - - 03/12/87 - - ND NO NO - 3.95 0.00 22.94 26.89 12/02/87 - - NO NO NO NO - 4.83 0.00 22.06 02/24/88 NO - NO NO NO NO - 4.19 0.00 22.70 07/20/88 NO - NO NO NO NO - 4.90 0.00 21.99 03/21/89 NO - NO NO NO NO - 4.23 0.00 22.66 05/10/91 NO - NO Na NO NO - 5.01 0.00 21.88 09/12/91 NO - NO NO NO ND <2 5.72 0.00 21.17 12/30/91 NO - NO NO NO NO 5.1 4.72 0.00 22.17 03/31/92 NO - NO NO NO NO <2 4.34 0.00 22.55 06/19/92 NO - NO NO ND NO <2 6.29 ozo 20.60 09/21/92 NO - ND NO ND ND <2.2 5.42 0.00 21.47 12/28/92 <10 - <0.3 <0.3 <0-3 0.7 <1.1 4.29 0.00 22.60 03/11/93 <50 - <0-3 <0.3 <0.3 <0.6 4.00 0.00 22.89 06/17/93 <10 - <0-3 1 <0.3 <0.3 <0.5 4.52 0.00 1 22.37 MW-4 11/86 NO - NO NO NO - - - - 03/12/87 - - NO NO NO 4.26 0.00 23.13 27.39 12/02/87 - - NO NO NO NO 5.09 : 0.00 22.30 02/24/88 NO - NO NO ND NO 4.471 0-00 22.92 07/20/88 ND - NO NO NO ND 5.22 0.00 1 22.17 03/21/89 ND - NO NO NO NO 4.52 0,00 22.87 06/10/91 NO - NO NO NO NO - 5,31 0.00 22.08 09/12/91 NO - NO NO NO NO <2 5.97 0.00 21.42 12/30/91 NO - NO NO NO ND 2.2 5.00 0-00 22.39 03/31/92 NO - NO NO NO NO 2 4.63 0.00 22.76 06/19/92 ND - NO NO NO NO 9.2 5.58 0.00 21.81 09/21/92 NO - NO NO NO ND <2.2 5.73 0.00 21.66 12/28/92 <10 - <0.3 <0.3 <0.3 <0-5 <I'l 4.63 0.00 22.76 03/11/93 <50 - <0.3 <0.3 <0.3 <0.6 4.30 0.00 23.09 06/17/93 <10 - <0.3 I <0.3 <0.3 <0-5 4.83 0.00 22.56 MW-5 03/12/87 - - NO NO NO - 3.63 0.00 22.66 12/87 - - ND NO NO - - - - 26.29 02/24/88 NO - ND NO NO - 3.82 0.00 22.47 07/20/88 NO - NO NO NO - 4.54 0.00 21.75 03/21/89 ND - NO ND NO 3.88 0.00 22.41 06/10/91 NO - NO ND NO 4.69 0100 21.60 09/12/91 NO - NO NO NO <2 5.39 0.00 20-90 12/30/91 NO - NO ND NO 2.2 5.39 0.00 20.90 03/31/92 NO - NO 1.1 ND 1,2 <2 4.02 0.00 22.27 06/19/92 NO - NO 1.1 NO 1.2 <2.2 4.92 0.00 21,37 09/21/92 NO - NO NO NO - - SM 0.00 21.21 12/28/92 <10 - <0-3 <0.3 <03 <0.5 <1.1 3,94 0.00 22.35 03/11/93 <50 - <0-3 <0.3 <0.3 <0.6 - 3,65 0.00 22.64 06/17/93 <10 I - <0.3 <03 <0.3 <0.5 I - 4.20 LiLo-L 22.09 3767R043.020 Page 2 of 5 MCI]GROUNDWATER TECHNOLOGY, INC.