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 Co 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) B Zone Wells-Areas 2A/2B and Adjacent Properties(cont.) MW-17 4/15/03 --- <0.05 0.082 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- 0.065 <0.0002 --- 5/8/03 --- <0.05 0.079 --- <0.01 --- <0.01 <0.02 --- <0.02 0.0057 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- 8/21/03 --- <0.05 0.049 --- <0.01 --- <0.01 <0.02 --- <0.02 0.0072 --- --- --- --- <0.02 <0.005 <0.005 2 <0.005 --- <0.02 <0.0002 --- 11/13/03 --- <0.015 <0.015 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- 0.0746 <0.0005 --- 2/20/04 --- <0.05 0.043 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.020 <0.0002 --- 6/3/04 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 9/9/04 --- <0.05 0.027 --- <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 0.018 --- <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 8/24/05 --- <0.05 0.016 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- 0.023 <0.0002 --- 11/14/05 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 2/16/06 --- <0.015 0.0274 --- <0.001 --- <0.005 0.0060 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- 0.0204 <0.0005 --- 5/17/06 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 8/17/06 --- <0.05 0.013 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.017 <0.005 --- <0.02 0.00049 --- 11/14/06 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 2/9/07 --- <0.05 0.018 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- 5/7/07 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/5/07 --- <0.05 0.025 --- <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 Not sampled due to Sheen 4/21/08 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/21/08 Not sampled due to Sheen 10/20/08 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 1/19/09 Not sampled due to Sheen 4/20/09 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/27/09 Not sampled due to Sheen 10/19/09 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 1/18/10 Not sampled due to Sheen 4/19/10 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/19/10 Not sampled due to Sheen 10/18/10 Dissolved Metals analysis required semi-annually per MRP No.R5-2004-0820 MW-24 4/15/03 --- <0.05 0.026 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- 0.029 <0.0002 --- 5/8/03 --- <0.05 0.020 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.0005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.0005 <0.0002 --- 8/20/03 --- <0.05 0.025 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 ' <0.005 --- <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 --- 0.0884 <0.0005 --- 2/18/04 --- <0.05 <0.005 --- <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 0.020 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- 0.036 <0.0002 --- 12/8/04 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 2/24/05 --- <0.05 0.022 --- <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 8/24/05 --- <0.05 0.019 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- 0.049 <0.0002 --- 11/14/05 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 28 of 45