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MONITORING AND REPORTING PROGRAM NO. R5-2008-0148 -4- LAWRENCE LIVERMORE NATIONAL SECURITY, LLC AND THE U.S. DEPARTMENT OF ENERGY FOR LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300 SAN JOAQUIN AND ALAMEDA COUNTIES Table 4. Buildings 812, 834, 850, and 899 septic system groundwater analytical methods and reporting limits Analyte EPA (E) or Reporting Units Standard Method (SM)' limit Nitrate as NO3 E300.0, E354.1, or E353.2 0.5 m /L Total coliform SM 9211 2 MPN/100mL Fecal coliform SM 9211 2 MPN/100mL Ground water elevation Field measurement Not Feet or Meters Applicable Or equivalent method as approved by the Regional Water Board. PERCOLATION PIT INSPECTIONS 9. The Discharger shall inspect quarterly the five mechanical equipment percolation pits located at Buildings 806A, 827 A, C, D, and E. If standing water is visible during the quarterly inspection, the Discharger shall increase the inspection frequency to monthly until no standing water is visible. 10.The Discharger shall inspect quarterly the seven cooling tower percolation pits located at Buildings 801 , 809, 812, 817A, 826, 827A, and 851 . If standing water is visible during the quarterly inspection the Discharger shall increase the inspection frequency to monthly until no standing water is visible. The more frequent inspections are required at percolation pits with standing water in order to prevent overflow of the percolation pits. COOLING TOWER BLOWDOWN EFFLUENT MONITORING 11.The Discharger shall semi-annually collect representative grab samples of blowdown discharges from each active cooling tower for the analytes shown in Table 5. Active cooling towers which discharge to percolation pits are located at Buildings 801, 809, 812, 817A, 826, 827A, and 851 . Cooling towers which discharge to septic systems are located at Buildings 802, 825, 830, 833, 835, 834A, and 850. 12.The Discharge shall also record the total flow monthly blowdown flow from the cooling towers. MECHANICAL EQUIPMENT DISCHARGE EFFLUENT MONITORING 13.The Discharger shall semi-annually collect representative composite samples of mechanical equipment discharges at Buildings 827 A, C, D, E and 806A for the analytes shown in Table 5. Composite samples shall be representative of the combined discharge to the percolation pit during a day of operation at each specified facility.