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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 B Zone Wells-Areas 2A/2B And Adjacent Areas cont. MW-51(cont.) --- 10/21/09 0.15 1.6 0.099 <0.0005 <0.0005 <0.0005 <0.0005 0.00069 <0.005 --- --- 1/20/10 0.2 1.5 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00085 <0.005 0.071 --- 4/21/10 0.079 1.1 0.055 37 <0.0005 <0.0005 <0.0005 <0.0005 0.00067 <0.005 --- --- 7/21/10 <0.05 0.68 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00068 <0.005 0.034 --- 10/19/10 0.10 1.1 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.0006511 <0.005 --- --- 1/27/11 0.21 1.4 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00070 <0.005 0.093 --- 4/21/11 0.15 1.3 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00066 <0.005 --- --- 8/8/11 <0.05 0.82 <0.05 <0.0005" <0.0005 <0.0005 <0.0005 0.00060 <0.005 0.037 --- 10/18/11 0.063 0.82 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00073 <0.005 --- --- 1/20/12 0.066 0.75 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00069 <0.005 0.023 --- 4/19/12 0.052 0.64 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00061 <0.005 --- --- 7/19/12 <0.05 0.76 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00062 <0.005 --- --- 10/16/12 0.059 0.85 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- --- 2/14/13 <0.05 0.4 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- --- 4/17/13 <0.05 0.19 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- --- 7/15/13 0.42 <0. JW <0.0005 --- MW-52 --- 5/26/05 Not Sampled due to SPH --- 8/24/05 Not Sampled due to SPH --- 11/14/05 Not Sampled due to SPH --- 2/16/06 Not Sampled due to SPH --- 5/15/06 Not Sampled due to SPH --- 8/14/06 Not Sampled due to SPH --- 11/14/06 Not Sampled due to SPH --- 2/5/07 Not Sampled due to Sheen --- 5/7/07 Not Sampled due to SPH --- 7/3/07 Not Sampled due to SPH --- 10/8/07 Not Sampled due to SPH --- 1/21/08 Not sampled due to Sheen --- 4/21/08 Not sampled due to Sheen --- 7/21/08 Not Sampled due to SPH --- 10/20/08 Not Sampled due to SPH --- 1/19/09 Not Sampled due to SPH --- 4/20/09 Not Sampled due to SPH --- 7/27/09 Not Sampled due to SPH --- 10/19/09 Not Sampled due to SPH --- 1/18/10 Not Sampled due to SPH --- 4/19/10 Not Sampled due to SPH --- 7/19/10 Not Sampled due to SPH --- 10/18/10 Not Sampled due to SPH --- 1/24/11 Not sampled due to Sheen --- 4/18/11 Not sampled due to Sheen --- 7/18/11 Not sampled due to Sheen --- 10/17/11 Not sampled due to Sheen --- 1/17/12 Not sampled due to Sheen --- 4/16/12 Not sampled due to Sheen --- 7/16/12 Not sampled due to Sheen --- 10/15/12 Not sampled due to Sheen --- 2/12/13 Not sampled due to Sheen --- 4/15/13 Not sampled due to Sheen --- 7/15/13 Not sampled due to Sheen MW-53 --- 5/26/05 3.5 1.6 0.070 24 0.0038 0.0031 0.0038 0.0024 0.0025 0.019 --- --- 8/24/05 5.2 <2.0 s 0.19 24 0.0018 0.0013 0.0022 0.0011 0.0022 0.034 0.021 11/16/05 4.2 <3.00.12 0.002 0.0018 0.0037 0.0015 0.0025 0.026 --- Page 38 of 60