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Table 4 Groundwater Analytical Data-Total Petroleum Hydrocarbons and BTEX South Shore Parcels-Parcel 2A and Adjacent Areas West Weber Avenue and North Lincoln Street Stockton,California Depth Ethyl- Sample (feet, Date TPHg TPHd TPHk TPHo Benzene Toluene benzene Xylenes ID bgs) Sampled (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-18 --- 4/15/03 4.2 5.30 --- 0.099 0.007 0.0018 0.0013 0.0089 --- 5/7/03 4.8 5.80 --- 0.28 4 0.0041 0.0019 0.0017 0.009 --- 8/20/03 5.4 3.70 --- 0.18 4 0.0045 0.0017 0.0017 0.0092 --- 11/12/03 4.9 4.10 --- 0.20" 0.005 0.002 0.0023 0.0095 --- 2/19/04 4.9 3.00 --- 0.15" 0.0042 0.0017 0.0016 0.0071 --- 6/2/04 5.0 3.00 --- 0.1416 0.0043 0.0015 0.0013 0.0067 --- 9/9/04 5.3 2.20 --- 0.1016 0.0047 <0.002 <0.001 0.0062 --- 12/10/04 22 4.5 2.50 --- 0.12 4 0.0084 0.0019 0.0022 0.0076 --- 2/25/05 4.3 1.40 --- <0.05 0.0053 0.0016 0.0015 0.0065 --- 5/27/05 4.7 1.20 --- <0.05 0.0041 0.0013 0.0014 0.0058 --- 8/24/05 4.8 1.90 --- <0.05 0.0036 0.0012 0.0017 0.006 --- 11/16/05 4.6 <2.009 --- 0.06124 0.0033 0.0012 0.0014 0.0058 --- 2/16/06 3.6 <1.5 9 --- <0.05 0.0024 0.0014 0.0014 0.0057 --- 5/19/06 4.4 1.60 --- <0.05 0.0029 0.0015 0.0016 0.0057 --- 8/16/06 4.3 <1.59 --- <0.05 0.0030 0.0023 0.0016 0.0062 --- 11/16/06 4.3 <1.59 --- <0.05 0.0020 0.0011 0.0013 0.0050 --- 2/8/07 4.6 <2.0 9 --- <0.05 0.0021 0.0011 0.0016 0.0052 --- 5/9/07 4.3 <2.0 9 --- 0.10 0.0023 0.0014 0.0014 0.0055 --- 7/3/07 Not sampled-no access agreement --- 10/8/07 Not sampled-no access agreement --- 1/24/08 4.2 <0.89 --- <0.05 0.001411 0.001 0.0014 0.00447 --- 4/23/08 3.9 <1.5 9 --- <0.05 0.0012 0.00086 0.0012 0.00403 --- 7/24/08 4.4 <1.5 9 --- <0.05 0.0011 0.00078 0.0012 0.00419 --- 10/22/08 4.1 <1.5 9 --- <0.05 0.0010 0.00081 0.0012 0.00403 J --- 1/22/09 3.8 <2.0 35,48 --- 0.075 32 0.00092 0.00074 0.0012 0.00331 --- 4/23/09 4.0 <1.5 48 --- <0.05 0.00079 0.00061 0.0011 0.00353 --- 7/30/09 3.9 1.20 --- <0.05 0.00057 0.00062 0.0009 0.00292 --- 10/21/09 2.8 1.8 --- <0.05 0.00056 0.00057 0.00084 0.00261 --- 1/20/10 3.8 1.9 --- <0.05 0.00071 0.00067 0.00089 0.0025 --- 4/20/10 4.0 <2.0 48 --- <0.05 0.00058 0.00065 0.00094 0.00265 7/21/10 2.6 1.243 --- <0.05 <0.0005 <0.0005 0.00073 0.00233 --- 10/20/10 3.8 1.5 --- <0.05 <0.0005 0.00054 0.00077 0.00226 MW-19 --- 4/15/03 9.8 2.50 --- <0.05 2.0 0.042 0.03 0.091 --- 5/8/03 14 4.40 --- 0.22 4 3.2 0.051 0.067 0.097 --- 8/21/03 15 2.50 --- 0.08 3.5 0.06 0.19 0.11 --- 11/13/03 16 5.40 --- 0.2704 2.7 0.062 0.21 0.082 --- 2/20/04 17 3.70 --- 0.1916 3.4 0.079 0.35 0.116 --- 6/3/04 12 4.30 --- 0.25 4 2.9 0.046 0.14 0.061 --- 9/9/04 17 2.20 --- 0.07816 4.0 0.097 0.33 0.127 Stantec I:\Tidewater\TW Stockton(Parcel 2A-0415)\Tables\QMR Tables\2010\4Q10\20101117-Parcel2A(Tables 4,5,6,7)Historical GW Tables 4Q10.xls Page 13 of 67