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Table 4 Groundwater Analytical Data-Total Petroleum Hydrocarbons,BTEX,MTBE,TBA,and As 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 (m /I (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) A Zone Wells-Area 2A/2B and Adjacent Areas cont. MW-10(cont.) --- 11/13/03 4.4 28.00 3.8 4 0.0080 <0.0005 0.260 0.20095 <0.0005 0.083 <0.015 --- 6/1/04 Not sampled due to SPH --- 9/7/04 Not sampled due to SPH(Sheen) --- 12/10/04 Not sampled due to SPH --- 2/25/05 4.3 39.00 5.7 4 0.005 0.001 0.25 0.292 <0.001 0.07 0.025 --- 5/25/05 Not sampled due to SPH --- 8/24/05 Not sampled due to SPH --- 11/14/05 Not sampled due to Sheen --- 2/14/06 Not sampled due to Sheen --- 5/15/06 Not sampled due to Sheen --- 8/14/06 Not sampled due to SPH --- 11/14/06 Not sampled due to SPH --- 2/5/07 Not sampled due to SPH --- 5/7/07 Not sampled due to Sheen --- 7/3/07 Not sampled due to Sheen --- 10/8/07 Not sampled due to Sheen --- 1/21/08 Not sampled due to Sheen --- 4/21/08 Not sampled due to Sheen --- 7/21/08 Not sampled due to Sheen --- 10/20/08 Not sampled due to Sheen --- 1/19/09 Well abandoned due to Unocal Excavation 51 MW-11 --- 10/18/96 0.19 1.30 <0.20 <0.0005 <0.0005 <0.0005 <0.002 --- --- 0.22 1/19/99 0.3 --- <0.0005(ND)* 0.0169(0.0153)* 0.0224(0.0224)* 0.0729(0.07299)* <0.01 <0.02 --- --- 2/27/99 --- 0.66 --- --- --- --- --- --- --- --- --- 7/19/02 0.16"6 3.4°'s(0.17)4,6 0.594,6(<0.3) <0.005 <0.005 <0.005 <0.005 <0.0005 --- 0.018 --- 9/30/02 0.18 0.45(0.2) <0.1(<0.1) <0.0005 <0.0005 <0.0005 <0.001 <0.0005 0.012 0.01 --- 12/5/02 1.1 0.78(0.36) <0.05(<0.05) <0.0005 0.031 0.1 0.287 <0.0005 0.011 0.019 --- 3/5/03 0.18 0.67(0.30) <0.05(<0.05) <0.0005 <0.0005 <0.0005 <0.001 <0.0005 0.011 0.025 --- 5/5/03 0.23 2.6(0.15) 0.13 4(<0.05) <0.0005 <0.0005 <0.0005 <0.001 --- --- 0.016 --- 8/19/03" 0.16 2.20(0.66) 0.084 B4(<0.05) <0.0005 <0.0005 0.0036 0.0094 --- 0.011 0.011 --- 11/11/03"" 0.094 1.24(0.064) 0.0554(<0.054) <0.0005 <0.0005 <0.0005 <0.001 --- <0.005 0.01 --- 02/17/04" 0.16 2.5(0.32) 0.098(<0.05) <0.0005 <0.0005 <0.0005 <0.001 --- 0.011 0.0068 --- 6/2/04" 0.091 2.8(0.50) 0.1816(<0.05 1b) <0.0005 <0.0005 <0.0005 <0.001 --- 0.010 --- --- 9/7/04" 0.18 0.83(0.39) <0.1(<0.1) <0.0005 <0.0005 <0.0005 <0.001 --- 0.012 <0.05 --- 12/6/04 23 0.14 0.83 <0.10 <0.0005 <0.0005 <0.0005 <0.001 <0.0005 0.012 --- --- 2/2/05 23 0.098 0.81 <0.05 <0.0005 <0.0005 <0.0005 <0.001 <0.0005 0.011 0.017 --- 5/25/05 0.09 0.68 <0.05 <0.0005 <0.0005 <0.0005 <0.001 <0.0005 0.0079 --- --- 8/24/05 0.11 0.76 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 0.0078 0.0096 --- 11/17/05 0.16 1.0 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 0.0078 --- --- 2/14/06 0.088 0.34 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 0.0078 0.016 --- 5/15/06 0.09 0.59 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 --- --- 8/14/06 0.098 0.68 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 0.017 --- 11/14/06 0.088 0.87 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 --- --- 2/5/07 0.13 1.0 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 <0.01 --- 5/7/07 0.11 0.97 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 --- --- 7/2/07 0.056 0.68 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 0.013 --- 10/8/07 0.075 0.64 0.052 36 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 --- --- 1/21/08 0.089 0.59 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 0.0302 --- 4/21/08 0.068 0.82 <0.05 <0.0005 <0.0005 <0.0005 <0.0015 <0.0005 <0.005 --- StanWc 20120924-Parcel2A(Tables 4,5,6,7)Historical GW Tables 4Q12.xlsx Page 7 of 61