ARCHIVED REPORTS_FOURTH QUARTER AND ANNUAL 2010 SITE STATUS, REMEDIAL SUMMARY, AND GROUNDWATER MONITORING REPORT

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Table 7 Groundwater Analytical Data-Metals South Shore Parcels-Parcel 2A and Adjacent Areas West Weber Avenue and North Lincoln Street Stockton, California Hex- avalent Sample Date Al Sb As Ba Be Ca Cd Cr Cc Cu Pb K Mo Mn Na Ni Se Ag TI V Zn Hg Cr ID (mq/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) (mg/1) A Zone Wells-Areas 2A/2B and Adjacent Properties(cont.) MW-11 10/18/96 --- <0.02 0.22 --- 0.019 --- <0.005 1.1 --- 1.1 0.26 --- --- --- --- 0.93 <0.004 0.01 0.44 --- 1.4 <0.0002 --- 7/19/02 --- <0.06 0.018 <0.002 --- --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 0.0053 <0.005 <0.005 --- 0.035 <0.0002 --- 9/30/02 --- <0.05 0.01 <0.005 --- --- <0.01 <0.01 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.01 --- <0.02 <0.0002 --- 12/5/02 --- <0.06 0.019 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- 3/5/03 --- <0.06 0.025 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 0.016 <0.005 <0.005 --- <0.02 <0.0002 --- 5/5/03 --- <0.06 0.016 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 0.02 <0.005 <0.005 --- <0.02 <0.0002 --- 8/19/03 3 --- <0.06 0.011 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 <0.005 <0.005 <0.005 --- <0.02 0.00022 --- 11/11/03 3 --- <0.06 0.01 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 <0.005 <0.005 <0.005 --- <0.02 <0.0002 --- 2/17/04 3 --- <0.06 0.0068 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 0.0086 <0.005 <0.005 --- <0.02 <0.0002 --- 6/2/04 3 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 9/7/04 3 --- <0.10 <0.05 --- <0.01 --- <0.01 <0.01 --- <0.01 <0.05 --- --- --- --- <0.01 <0.10 <0.001 5 <0.10 --- <0.01 <0.0002 --- 12/6/04 6 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 2/2/05 6 --- <0.05 0.017 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 7 <0.005 --- <0.02 <0.0002 --- 5/25/05 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 8/24/05 --- <0.05 0.0096 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 7 <0.005 --- <0.02 <0.0002 --- 11/14/05 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 2/14/06 --- <0.05 0.016 --- <0.01 --- <0.01 <0.01 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- 5/17/06 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 8/14/06 --- <0.05 0.017 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- 0.039 <0.0002 --- 11/14/06 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 2/5/07 --- <0.015 <0.01 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- 0.0187 <0.0005 --- 5/7/07 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/2/07 --- <0.05 0.013 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- 10/8/07 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 1/21/08 --- <0.015 0.0302 --- <0.001 --- <0.005 <0.005 --- <0.005 --- --- --- --- --- --- --- --- --- --- --- --- --- 4/21/08 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/21/08 Well not sampled 8 10/20/08 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 8 1/19/09 Well abandoned due to Unocal Excavation 9 2AMW-12 5/20/02 --- <0.06 0.02 <0.002 --- --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 <0.005 <0.005 <0.005 --- <0.02 <0.0002 --- 9/30/02 --- <0.05 0.018 <0.005 --- --- <0.01 <0.01 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.01 --- 0.058 <0.0002 --- 12/5/02 --- <0.015 <0.015 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- 0.00514 <0.015 <0.005 <0.015 --- 0.0495 <0.0005 --- 3/5/03 --- <0.015 <0.015 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- 0.0701 <0.0005 --- 5/8/03 --- <0.05 0.013 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.0005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- 8/20/03 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.0098 <0.020 <0.0002 --- 11/12/03 --- <0.015 <0.015 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- 0.0780 <0.0005 --- 2/20/04 --- <0.05 0.026 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.020 <0.0002 --- 6/2/04 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 9/9/04 --- <0.05 0.021 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.020 <0.0002 --- 12/10/04 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 2/25/05 --- <0.05 0.015 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- 5/25/05 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 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 7 of 45