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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 Tl V Zn Hg Cr ID (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) (mg/l) D Zone Wells - Area 2A/2B And Adjacent Properties (cont.) MW-74 10/20/08 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 1/22/09 --- <0.05 0.009 --- <0.005 --- <0.01 <0.01 --- <0.01 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.001 --- <0.02 <0.0002 --- 4/20/09 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/30/09 --- <0.0050 0.017 --- <0.0010 --- <0.0010 <0.0050 --- <0.0050 <0.0050 --- --- --- --- <0.0050 <0.0060 11 <0.0050 <0.015 --- <0.010 <0.00020 --- 10/19/09 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 1/21/10 ---<0.0050 0.018 ---<0.0010 ---<0.0010 <0.0050 ---<0.0050 <0.0050 --- --- --- ---<0.0050 <0.0060 <0.0050 <0.015 --- 0.013 <0.00020 --- 4/19/10 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/20/10 --- <0.0050 0.020 --- <0.0010 --- <0.0010 <0.0050 --- <0.0050 <0.0050 --- --- --- --- <0.0050 <0.0060 <0.0050 <0.015 ---0.014 <0.00020 --- 10/18/10 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 1/25/11 ---<0.0050 0.020 ---<0.0010 ---<0.0010 <0.0050 ---<0.0050 <0.0050 ------------<0.0050 <0.0060 <0.0050 <0.015 ---<0.010 <0.00020 --- 4/18/11 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 7/20/11 ---<0.0050 0.025 ---<0.0010 ---<0.0010 <0.0050 ---<0.0050 <0.0050 --- --- --- ---<0.0050 <0.0060 <0.0050 <0.015 --- 0.011 <0.00020 --- 10/17/11 Dissolved Metals analysis required semi-annually per MRP No. R5-2004-0820 1/19/12 ---<0.0050 0.023 ---<0.0010 ---<0.0010 <0.0050 ---<0.0050 <0.0050 --- --- --- ---<0.0050 <0.0060 <0.0050 <0.015 ---<0.010 <0.00020 --- Soil Borings SB-1 3/13/03 --- <0.05 0.2 --- <0.01 --- <0.01 <0.02 --- <0.02 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.005 --- <0.02 <0.0002 --- SB-2 3/12/03 --- <0.05 0.19 --- <0.005 --- <0.01 <0.01 --- <0.01 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.01 --- <0.02 <0.0002 --- SB-3 3/11/03 --- <0.05 0.06 --- <0.005 --- <0.01 <0.01 --- <0.01 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.01 --- <0.02 <0.0002 --- SB-4 3/11/03 --- <0.05 0.073 --- <0.005 --- <0.01 <0.01 --- <0.01 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.01 --- <0.02 <0.0002 --- SB-5 3/12/03 --- <0.05 0.089 --- <0.005 --- <0.01 <0.01 --- <0.01 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.01 --- <0.02 <0.0002 --- SB-6 3/12/03 --- <0.05 0.19 --- <0.005 --- <0.01 <0.01 --- <0.01 <0.005 --- --- --- --- <0.02 <0.005 <0.01 <0.01 --- <0.02 0.00051 --- QA/QC Sampling QCEB 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 ---0.031 <0.0005 --- RINSE 8/18 3 8/18/03 ---<0.06 <0.005 ---<0.002 ---<0.005 <0.01 ---<0.01 <0.003 ------------<0.02 <0.005 <0.005 <0.005 ---<0.02 <0.0002 --- RINSE 8/19 3 8/19/03 --- <0.06 <0.005 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 <0.005 <0.005 0.005 --- <0.02 <0.0002 --- X-DUP 3 8/19/03 --- <0.06 0.014 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 0.0055 <0.005 <0.005 --- <0.02 <0.0002 --- Method Blank 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 --- <0.01 --- --- Method Blank 11/14/03 --- <0.015 <0.015 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- <0.01 --- --- Method Blank 11/15/03 --- <0.015 <0.015 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- <0.01 --- --- Method Blank 11/17/03 --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- <0.0005 --- Method Blank 11/17/03 --- <0.015 <0.015 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- <0.01 --- --- Method Blank 2/19/04 3 ---<0.06 <0.005 ---<0.002 ---<0.005 <0.01 ---<0.01 <0.003 ------------<0.02 <0.005 <0.005 <0.005 ---<0.02 <0.0002 --- X-DUP 2/18/04 3 --- <0.06 0.0063 --- <0.002 --- <0.005 <0.01 --- <0.01 <0.003 --- --- --- --- <0.02 0.013 <0.005 <0.005 --- <0.02 <0.0002 --- Blank 2/19/04 3, 4 ---<0.06 <0.005 ---<0.002 ---<0.005 <0.01 ---<0.01 <0.003 ------------<0.02 <0.005 <0.005 <0.005 ---<0.02 <0.0002 --- X-DUP 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 ---0.06 <0.0002 --- Method Blank 9/7/04 4 ---<0.015 <0.015 ---<0.001 ---<0.005 <0.005 ---<0.005 <0.01 ------------<0.005 <0.15 <0.005 <0.015 ---<0.01 ------ Equip. Blank 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 ---0.11 <0.0002 --- Method Blank 2/6/07 --- <0.015 <0.01 --- <0.001 --- <0.005 <0.005 --- <0.005 <0.01 --- --- --- --- <0.005 <0.015 <0.005 <0.015 --- <0.01 --- --- Method Blank 1/21/08 --- <0.015 <0.01 --- <0.001 --- <0.005 <0.005 --- <0.005 --- --- --- --- --- --- --- --- --- --- --- <0.0005 --- Method Blank 1/22/08 --- <0.015 <0.01 --- <0.001 --- <0.005 <0.005 --- <0.005 --- --- --- --- --- --- --- --- --- --- --- <0.0005 --- Method Blank 1/23/08 --- <0.015 <0.01 --- <0.001 --- <0.005 <0.005 --- <0.005 --- --- --- --- --- --- --- --- --- --- --- <0.0005 --- Method Blank 1/24/08 --- <0.015 <0.01 --- <0.001 --- <0.005 <0.005 --- <0.005 --- --- --- --- --- --- --- --- --- --- --- <0.0005 --- Method Blank 1/25/08 --- <0.015 <0.01 --- <0.001 --- <0.005 <0.005 --- <0.005 --- --- --- --- --- --- --- --- --- --- --- <0.0005 --- Explanation: --- = Not Analyzed Al = Aluminum Be = Beryllium FD = Field duplicate Sb = Antimony Ca = Calcium mg/l = Milligrams per liter As = Arsenic < = Below given laboratory detection limit Ba = Barium U = Upper groundwater zone L = Lower groundwater zone Cu = CopperHg = Mercury Ni = Nickel Zn = Zinc K = Potassium Ag = Silver Tl = Thallium ND = Not detected; laboratory detection limit unspecified in historical tables. Cr = Chromium V = Vanadium W-SSC = Water sample collected from Stockton Shipping Channel Na = Sodium Cd = Cadmium Co = Cobalt Mo = Molybdenum Mn = Manganese Se = SeleniumPb = Lead I:\Tidewater\TW Stockton (P2A)\Tables\QMR Tables\2012\1Q12\20120305-Parcel2A (Tables 4,5,6,7) Historical GW Tables 1Q12-CL.xlsx Page 45 of 46