ARCHIVED REPORTS_DRYWELL CLOSURE AND INVESTIGATION

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INOA Drywell Closure and Investigation Page 17 of 26 May 30, 2014 Table 4. Analytical Results Dr well 2: Soil Samples Collected April 1 2014 SAMPLE ID B2@51'-I B2@55'-I B2@60'-II m K (mg/K (mg/Kg) ' VOCs ND ND ND Semi-VOCs ND ND ND Arsenic 2,6 3.0 1.8 *1.6 m /K Barium 94 57 76 *5000 m K Chromium 15 9.2 12 *5000 m K Lead 4.1 2.1 3.1 *320 m K TPH-Gas ND ND ND TPH-Diesel ND ND 8.4 *110 mg/Kg) TRPH ND ND ND *Environmental Screening Levels. San Francisco Bay Regional Water Quality Control Board,December 2013,Commercial/Industrial Land Use(where applicable). These represent the screening concentration level for a specific Individual chemical of concern. ND = Not detected to level of reporting limit. BOLD =Above Regulatory Concentration Limits for this Analyte. Table S. Analytical Results Dry well 2: Groundwater Samples Collected April 1, 2014 SAMPLE ID W2-I W2-II p W2-III W2-IV i� W2-V W2-VI L L L L b L L VOCs ND -- -- -- -- -- Semi-VOCs -- ND -- -- -- -- Arsenic _ 1.6 *10 L Barium 83 *1000 Pg/L) -- Chromium 1.1 (*50 L Mercury -- 0.057 -- -- -- *0.025 L -- -- -- -- __ Selenium 3.5 *5 L TPH-Gas __ -- ND -- -- TPH-Diesel 280 *100 L TRPH -- -- -- -- -- ND *Environmental Screening Levels. San Francisco Bay Regional Water Quality Control Board, December 2013,Commercial/Industrial Land Use(where applicable). These represent the screening concentration level for a specific individual chemical of concern. ND = Not detected to level of reporting limit. -- = Not analyzed for this chemical. BOLD =Above Regulatory Concentration Limits for this Analyte. '404 902 Industrial Way•Lodi, CA 95240-209.367.3701 • Fax 209.333.8303 02014 Neil 0. Anderson&Associates,Inc.