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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) B Zone Wells-Areas 2A/2B And Adjacent Areas cont. MW-58(cont.) --- 4/20/11 <0.05 <0.05 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- --- 7/20/11 2.5 <0.60 46 <0.05 0.0083 0.0026 0.0011 0.00780 0.00075 <0.005 0.066 --- 10/19/11 <0.05 0.13 91 0.08916 <0.0005 <0.0005 <0.0005 <0.0005 0.00080 <0.005 --- --- 1/18/12 2.0 0.553 0.09636 0.0067 0.0022 0.00083 0.0064 0.00066 <0.005 0.063 --- 4/18/12 <0.05 0.052 41 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- --- 7/18/12 <0.05 0.08841 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- --- TO/15/12 Not sampled per MRP No.R5-2012-0805 MW-59 --- 10/23/08 0.44 0.16 <0.05 <0.0005 <0.0005 <0.0005 <0.001 0.0042 <0.005 --- --- 1/21/09 0.77 0.15 <0.05 <0.0005 <0.0005 <0.0005 <0.001 0.00096 <0.005 0.046 --- 4/22/09 1.1 0.25 <0.05 <0.0005 <0.0005 <0.0005 <0.001 0.0036 <0.005 --- --- 7/29/09 1.3 0.30 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00094 <0.005 0.056 --- 10/21/09 0.6 0.20 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.0013 <0.005 --- --- 1/20/10 0.77 0.15 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.0015 <0.005 0.065 --- 4/21/10 1.5 0.44 0.083" <0.0005 <0.0005 <0.0005 <0.0005 0.00068 <0.005 --- --- 7/21/10 0.95 0.31 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.00081 <0.005 0.086 --- 10/20/10 1.0 0.80 0.29 3' <0.0005 <0.0005 <0.0005 <0.0005 <0.0008 1 <0.005 --- --- 1/26/11 0.92 0.49 41 0.29 92 0.00068 <0.0005 <0.0005 <0.0005 0.00075 <0.005 0.073 --- 4/20/11 1.5 0.25 0.068 36 <0.0005 <0.0005 <0.0005 <0.0005 0.00077 <0.005 --- --- 7/20/11 1.2 0.15 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 0.00099 <0.005 0.028 --- 10/19/11 1.2 0.85 0.1337 <0.0005 <0.0005 <0.0005 <0.0005 0.00052 <0.005 --- --- 1/19/12 1.4 0.54 0.1236 <0.0005" <0.0005 <0.0005 <0.0005 0.00050 <0.005 0.087 --- 4/19/12 2.0 0.70 0.24 36 <0.0005 <0.0005 <0.0005 <0.0005 0.00072 <0.005 --- --- 7/19/12 2.1 0.72 0.068" <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- <0.0005 ' IV MW-60 --- 10/23/08 <0.05 0.11 47 0.053 38 0.00063 <0.0005 <0.0005 <0.001 <0.0005 <0.005 --- 1/21/09 <0.05 <0.05 <0.05 <0.0005 <0.0005 <0.0005 <0.001 <0.0005 <0.005 <0.005 --- 4/22/09 <0.05 0.09547 <0.05 <0.0005 <0.0005 <0.0005 <0.001 <0.0005 <0.005 --- 7/29/09 <0.05 0.26 91 0.063 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 <0.0050 --- 10/20/09 <0.05 0.7347 0.836 <0.0005 <0.0005 <0.0005 0.00145 <0.0005 <0.005 --- 1/21/10 <0.05 0.062 5' 0.055 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 <0.0050 --- 4/20/10 <0.05 0.92 91 1.4 <0.0005 <0.0005 <0.0005 0.00074 <0.0005 <0.005 --- 7/20/10 <0.05 0.16' 0.12 36 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 <0.0050 --- 10/20/10 <0.05 0.08847 0.078 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- 1/26/11 <0.05 0.08441 0.078' <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 <0.0050 --- 4/20/11 <0.05 <0.05 <0.05 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- 7/20/11 <0.05 0.1041 0.13 36 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 <0.0050 --- 10/18/11 <0.05 0.92 91 0.70 36 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- 1/19/12 <0.05 0.49 0.13" <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 <0.0050 --- 4/18/12 <0.05 0.1841 0.12 36 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- 7/18/12 <0.05 0.2041 0.32 36 <0.0005 <0.0005 <0.0005 <0.0005 <0.0005 <0.005 --- 10/16/12 0.84 36 StanWc 20120924-Parcel2A(Tables 4,5,6,7)Historical GW Tables 4Q12.xlsx Page 41 of 61