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MONITORING AND REPORTING PROGRAM 8 FOR CLOSURE AND POST-CLOSURE MAINTENANCE OF HARNEY LANE CLASS III LANDFILL SAN JOAQUIN COUNTY TABLE III CONCENTRATION LIMITS Concentration Limit Constituent Units MW-1 MW-2 MW-3 MW-4 Specific Conductance(EC) µmhos/cm 344 420 336 1399 pH pH units 6.61-8.13 6.55-7.99 6.74-7.96 6.36-8.10 Total Dissolved Solids(TDS) mg/L 265 320 . 278 886 Total Kjeldahl Nitrogen mg/L 22 175 10 7.87 Chloride mg/L 19 27 29 N/A VOCs(EPA 601 and 602) µg/L Detect Detect Detect Detect Dichlorodifluoromethane µg/L Detect Detect Detect Detect Sulfate mg/L 28 14 12 38 Nitrate as N * mg/L --- --- --- --- Arsenic,dissolved mg/L 0.025 0.025 0.025 0.025 Barium,dissolved mg/L 2.5 2.5 2.5 0.764 Cadmium,dissolved mg/L 0.015 0.015 0.015 0.015 Calcium,dissolved mg/L 43 32 30 178 Chromium,total dissolved mg/L 0.025 0.025 0.025 0.025 Copper,dissolved mg/L 0.05 0.05 0.05 0.05 Lead,dissolved mg/L 0.01 0.01 0.01 0.01 Magnesium,dissolved mg/L 22 17 12 85 Manganese,dissolved mg/L 0.025 0.025 0.025 0.025 Selenium,dissolved mg/L 0.025 0.025 0.025 0.025 Silver,dissolved mg/L 0.05 0.05 0.05 0.05 Sodium,dissolved mg/L 64 34 54 126 Zinc,dissolved mg/L 0.05 0.05 0.05 0.05 * To be monitored quarterly for 1-year in order to determine a concentration limit. 3. Monitoring Points The ground water monitoring points for detection and evaluation monitoring shall be upgradient well MW-1 and downgradient wells MW-2, MW-3 and MW-4, as shown in Attachment B. The surface water monitoring points shall be upstream monitoring point S-1 and downstream monitoring point S-2.