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E GENESIS ENGINEERING 8 REDEVELOPMENT Table A-5 DePaoli Property Historic Analytical Data Whiskey Slough Surface Water Analytical Results (1983-1987) Sample Sample Arsenic Barium Cobalt Chromium Copper Iron Magnesium Manganese Nickel Lead Zinc Chromium(III) Chromium(VI) Location Date (rng/L) (mg/L) (rng/L) (rng/L) (rng/L) (rng/L) (M 910 (mg/L) (mg/L) (mg/L (mg/L) (mg/L) (mg/L) Historic Data Summarized in Condor Environmental Management 1988 Waste Characterization Analysis Report SW-1 3/31/83 0.01 NR NR NR NR 163 NR 10 NR NR 0.26 0.57 0.03 SW-1 5/3/83 <0.01 NR NR NR NR 3 NR 0.85 NR NR <0.05 <0.05 <0.03 SW-1 6/2/83 <0.01 NR NR NR NR 1.1 NR 0.34 NR NR 0.12 <0.05 <0.03 SW-1 6/9/83 <0.004 NR NR NR NR 0.35 NR 0.27 NR NR 0.04 <0.02 <0.02 SW-1 9/1183 <0.05 NR NR NR NR 0.95 NR 0.15 NR NR 0.02 <0.1 <0.1 SW-1 12/1/83 <0.05 NR NR NR NR 4.2 NR 0.25 NR NR 0.25 <0.1 <0.1 SW-1 3/7/84 <0.01 NR NR NR NR 0.42 NR 0.2 NR NR <0.05 <0.2 <0.2 SW-1 5/9/84 <0.01 NR NR <0.05 NR NR NR NR NR NR NR NR NR Condor Environmental Management,Inc. CSW-1 10/21/87 <0.01 <0.5 <0.05 <0.005 <0.1 <0.1 17 0.09 <0.01 <0.005 <0.1 <0.05 <0.05 CSW-2 10/21/87 <0.01 <0.5 <0.05 <0.005 <0.1 <0.1 20 0.03 <0.01 <0.005 <0.1 <0.05 <0.05 CSW-3 10/21/87 <0.01 <0.5 <0.05 <0.005 <0.1 <0.1 16 0.01 <0.01 <0.005 <0.1 <0.05 <0.05 ESL(mg/L.) Surface Water Screening Level 1.40E-04 5.00E+01 5.00E+01 5.00E+01 5.00E+01 NL NL NL 4.60E+00 5.00E+01 5.00E+01 5.00E+01 5.00E+01 (Estuarine) NOTES: •'<" Indicates the analyte was less than the listed Analytical Laboratory Reporting Limit "NR"Value Not Reported - "ESL"refers to Screening For Environmental Concerns at Sites with Contaminated Soil and Groundwater, Interim Final-November 2007(California Water Quality Control Board) "NL"Value Not Listed Site Investigation Work Plan DePaoli Property November 14.2007 Page 1 of 1