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LAWRENCE LIVERMORE NATIONAL LABORATORY -SITE 300 Hazardous Waste Facility EPA ID No. CA 2890090002 Post -Closure Permit Effective Date: April 3, 2003 Page 12 of 13 Table 1. Groundwater Constituents of Concern, Analytical Reporting Limit (RL), and Concentration Limit (CL) for Monitoring Wells Constituent of Concern & Monitoring Parameter Analytical Methods Analytical RL Well W-829-15 CL/SL Well W-829-22 CL/SL Unit of Measure Field pH 9.7-9.9 8.4-8.5 Field specific conductance 1100-1500 900-1200 pmho/cm Field temperature 20-23 21-24 °C HMX HPLC 5.0 <rl/rl <rl/rl pg/L RDX HPLC 5.0 <rl/rl <rl/rl pg/L TNT HPLC 5.0 <rl/rl <rl/rl pg/L Antimony EPA 204.2 5.0 <rl/rl <rl/rl pg/L Arsenic EPA 206.2 2.0 12.0/16.0 <2.90/2.90 pg/L Barium EPA 200.7 25.0 <rl/rl <rl/rl pg/L Beryllium EPA 210.2 0.5 <rl/rl <rl/rl pg/L Cadmium EPA 213.2 0.5 <rl/rl <rl/rl pg/L Chromium EPA 218.2 1.0 0.70/2.20 0.80/1.80 pg/L Cobalt EPA 200.7 25.0 <rl/rl <rl/rl pg/L Copper EPA 200.7 10.0 <rl/rl <rl/rl pg/L Lead EPA 239.2 2.0 <rl/rl <rl/rl pg/L Manganese EPA 200.7 30.0 <rl/rl <rl/rl pg/L Mercury EPA 200.7 0.2 <rl/rl <rl/rl pg/L Molybdenum EPA 245.1 25.0 <rl/rl <rl/rl pg/L Nickel EPA 249.2 5.0 <rl/rl <rl/rl pg/L Perchlorate EPA 314 4.0 <rl/rl <rl/rl pg/L Selenium EPA 270.2 2.0 <rl/rl <rl/rl pg/L Silver A EPA 272.2 1.0 <rl/rl <rl/rl pg/L Vanadium EPA 200.7 25.0 <rl/rl <rl/rl pg/L Zinc EPA 200.7 20.0 <rl/rl <rl/rl pg/L