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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-39(cont.) --- 7/2/07 0.055 0.098 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 --- 10/8/07 0.12 0.20 --- 0.19 36 <0.0005 <0.0005 <0.0005 <0.0015 --- 1/21/08 0.088 0.14 --- 0.2436 <0.0005 <0.0005 <0.0005 <0.0015 --- 4/21/08 0.089 0.14 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 --- 7/21/08 Well not sampled 45 --- 10/20/08 Well not sampled 45 --- 1/19/09 Well abandoned due to Unocal Excavation 51 MW-45 --- 6/3/04 <0.05 0.11 --- 0.11 <0.50 <0.50 <0.50 <1.0 --- 9/8/04 <0.05 <0.05 --- 0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 12/7/04 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 2/24/05 <0.05 <0.05 --- 0.06 <0.0005 <0.0005 <0.0005 <0.001 --- 5/25/05 <0.05 <0.05 --- <0.10 <0.0005 <0.0005 <0.0005 <0.0005 --- 8/24/05 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 11/15/05 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 --- 2/15/06 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 5/17/06 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 8/15/06 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 11/15/06 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0015 --- 2/6/07 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 5/9/07 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 7/3/07 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 10/9/07 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 1/23/08 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 4/22/08 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 7/23/08 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 10/21/08 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 1/20/09 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 4/21/09 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.001 --- 7/28/09 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 --- 10/20/09 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 --- 1/21/10 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 --- 4/19/10 <0.05 0.06941 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 --- 7/21/10 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 --- 10/19/10 <0.05 <0.05 --- <0.05 <0.0005 <0.0005 <0.0005 <0.0005 2BMW-1 --- 9/2/99 <0.05 <0.05 --- <0.05 <0.0005 0.0032 0.0008 0.004 --- 10/14/99 <0.05 <0.05 --- <0.5 <0.0005 0.0032 0.0008 0.004 --- 5/20/02 0.20 <0.05(<0.05) --- <0.3(<0.3) <0.005 <0.005 0.026 0.071 --- 9/30/02 <0.05 <0.05(<0.05) --- <0.1 (<0.1) <0.0005 <0.0005 <0.0005 <0.001 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 25 of 67