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WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2008-0148 2 <br /> LAWRENCE LIVERMORE NATIONAL SECURITY, LLC AND <br /> THE U.S. DEPARTMENT OF ENERGY FOR <br /> LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300 <br /> SAN JOAQUIN AND ALAMEDA COUNTIES <br /> ATTACHMENT 24 - CONTINUED <br /> Evaluation of laundry water discharges on ground water quality using the designated level methodology (DLM); <br /> comparison of maximum value detected in laundry water samples discharged to septic systems with the DLM for <br /> discharges more than 30 feet above ground water using an attenuation factor or 100. <br /> Maximum value Corresponding <br /> Parameter Units detected in Designated level water quality Source of wager <br /> value <br /> effluent methodology goal' <br /> quality goal <br /> RDX m /L 0.017 0.21 0.0021 IRIS <br /> Sodium mg/L 500 Not applicable 30-60 Taste & odor <br /> threshold <br /> Specific conductance pmhos/c 2,000 Not applicable 900 CA secondary MCL <br /> Sulfate m /L 193 Notapplicable 250 CA secondary MCL <br /> Total alkalinity (as CaCO3) m /L 1 750 None None None <br /> Total dissolved solids m /L 1,450 Not applicable 500 CA secondary MCL <br /> Total hardness as CaCO m /L 347 None None None <br /> Total phosphorus as P m /L 0.58 None None None <br /> Zinc m /L 1.3 500 5 CA secondary MCL <br /> a From A Compilation of Water Quality Goals (Marshack August 2007). <br /> b MCL — Maximum Contaminant Level <br /> C IRIS — USEPA Integrated Risk Information System reference dose for drinking water. <br />