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Table 5 Historical Groundwater Analytical Data South Shore Parcels-Parcel 2A and Adjacent Areas West Weber Avenue and North Lincoln Street Stockton,California Depth Ethyl- Sample (feet, Date TPHg TPHd TPHo Benzene Toluene benzene Xylenes MTBE TBA As ID b s) Sampled (mg/L (mg/L (mg/L (mg/L (mg/L (mg/L (mg/L (mg/L (mg/L m /L A Zone Wells-Area 2A/2B and Adjacent Areas cont. MW-5(cont.) --- 5/25/05 Not sampled due to broken monument --- 8/24/05 1.2 <0.80 9 <0.05 <0.0005 <0.0005 0.00055 <0.0015 0.015 <0.005 0.026 --- 11/17/05 1.1 <0.80 9 <0.05 <0.0005 <0.0005 0.00060 <0.0015 0.014 <0.005 --- --- 2/14/06 0.39 <0.40 9 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 0.013 <0.005 0.027 --- 5/15/06 0.2 <0.20 9 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 0.012 <0.005 --- --- 8/14/06 0.13 0.18 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 0.012 <0.005 0.034 --- 11/14/06 0.5129 0.14 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 0.0094 <0.005 --- --- 2/5/07 0.27 0.24 0.097 <0.0005 <0.0005 <0.0005 <0.0015 0.0094 <0.005 0.0277 --- 5/7/07 0.35 0.27 <0.05 0.002 <0.0005 <0.0005 <0.0015 0.011 <0.005 --- --- 7/2/07 0.24 0.26 <0.05 0.0017 <0.0005 <0.0005 <0.0015 0.0088 <0.005 0.028 --- 10/8/07 0.37 0.27 0.072 35 <0.0005 <0.0005 <0.0005 <0.0015 0.0086 <0.005 --- --- 1/21/08 0.38 0.26 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 0.0079 <0.005 0.0447 --- 4/21/08 0.24 0.46 43 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 0.0059 <0.005 --- --- 7/21/08 Well not sampled 45 --- 10/20/08 Well not sampled 45 --- 1/19/09 Well abandoned due to Unocal Excavation 5' MW-6 33 7/24/90 47 23.00 --- 0.018 7.4 3.1 12 --- --- --- --- 10/18/96 91 0.24 <0.2 0.14 21 15 55 --- --- 0.023 --- 1/19/99 81.1 --- --- 0.0595(ND)* 6.54(6.09)* 9.08(8.94)* 30.1(30.1)* <0.4 <8.0 --- --- 2/27/99 --- 0.89 --- --- --- --- --- --- --- --- --- 9/2/99 88.9 1.08 --- <0.0005 4.96 9.22 26 --- --- --- --- 5/20/02 22 0.58(<0.05) 0.47415(<0.3) <0.13 1.1 2.7 7.32 <0.13 --- <0.005 --- 9/30/02 44 <0.1(<0.1) 2.4(2.1) <0.02 2.2 5.1 14.6 <0.02 <0.2 <0.005 --- 12/5/02 160 <0.2(<0.05) <0.05(<0.05) <0.02 0.8 1.8 4.96 --- --- <0.005 --- 3/5/03 33 0.21(0.091) <0.05(<0.05) <0.02 1.6 3.9 9.87 <0.02 <0.2 <0.005 --- 5/5/03 32 1.0(0.091) 0.17 4(<0.05) <0.02 1.3 3.4 8.48 --- --- 0.0067 --- 8/18/03 12 77 0.504(0.17 4) 0.41 B4(0.25 B4) <0.05 1.4 10 25.1 <0.05 <0.5 <0.005 --- 11/11/03 12 78 0.714(0.0724) 0.264(0.1704) <0.05 0.37 9.7 25.61 <0.05 11 <0.5 0.0062 --- 02/17/04 12 42 0.89(0.23) 0.304(0.224) <0.025 1.7 4.2 11.1 <0.025 <0.25 0.0062 --- 6/2/04 12 46 3.4 18(1.018) 3.2(2.1) <0.05 1.4 6.6 17.9 <0.05 <0.5 --- --- 9/7/04 12 Not Sampled Due to Transfer of Environmental Consultant Management Responsibilities --- 12/6/04 23 35 0.18 <0.10 <0.02 1.3 4.4 12.1 <0.02 11 <0.20 11 --- 2/2/05 23 23 0.21 <0.05 <0.02 0.65 3.3 8.06 <0.02 <0.20 <0.005 --- 5/25/05 Not sampled due to broken monument --- 8/24/05 20 0.21 0.1914 <0.005 0.50 2.0 6.73 <0.005" <0.025 <0.005 --- 11/17/05 26 0.23 <0.05 <0.005 0.62 3.1 10.4 <0.005 <0.025 --- --- 2/14/06 41 0.13 0.15 24 <0.025 0.72 5.3 14.1 <0.025 <0.150 <0.005 --- 5/15/06 22 0.23 <0.05 <0.005 0.51 2.3 6.11 <0.005 <0.025 --- --- 8/14/06 20 0.19 <0.05 <0.015 0.50 2.8 6.60 <0.015 <0.070 <0.005 --- 11/14/06 20 0.14 <0.05 <0.009 0.36 2.5 6.33 <0.009 <0.005 --- --- 2/5/07 14 <0.05 <0.05 <0.009 0.22 1.7 4.36 <0.009 <0.05 <0.01 --- 5/7/07 18 0.29 <0.05 <0.009 0.25 2.0 5.1 <0.009 <0.05 --- --- 7/2/07 Well abandoned by Golden State Environmental MW-6R --- 4/20/09 Well not sampled 45 --- 7/28/09 Well not sampled 45 --- 10/19/09 Well not sampled 45 --- 1/18/10 Well not sampled 45 --- 4/19/10 Well not sampled 45 --- 7/19/10 Well abandoned MW-7 15 7/24/90 <0.02 <0.1 --- <0.0005 0.00073 <0.0005 0.002 --- --- --- --- 11/17/95 <0.05 0.13 --- <0.005 <0.005 <0.005 <0.005 <0.0025 --- --- --- 1/19/99 <0.05 0.45 --- <0.0005(ND)* <0.0005(ND)* <0.0005(ND)* <0.0005(ND)* <0.01 <0.02 Page 3 of 60