SR0079530 - Laserfiche WebLink

Home Browse Search

WASTE DISCHARGE REQUIREMENTS ORDER NO. R5-2008-0148 2 LAWRENCE LIVERMORE NATIONAL SECURITY, LLC AND THE U.S. DEPARTMENT OF ENERGY FOR LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300 SAN JOAQUIN AND ALAMEDA COUNTIES ATTACHMENT 16 - CONTINUED Evaluation of cooling tower and mechanical equipment discharges on ground water quality using the designated level methodology (DLM); comparison of maximum value detected in samples with the DLM values for disposal units (percolation pits or septic systems) using attenuation factor of 100 for systems more than 30 feet above round water. Parameter Units Maximum value Designated level Corresponding Source of water detected in effluent methodologyvalue water qualitya oal qualityoal Nickel m /L 0.019 10 0.1 CA primary MCL Nitrate as N m /L 0.4 Not applicable 10 CA primary MCL Nitrate as NO3 m /L 1.8 Not applicable 45 CA primary MCL Nitrate plus Nitrite as N m /L 0.17 Not applicable 10 CA primary MCL Ortho-phosphate m /L 180 None None None Potassium m /L 280 None None None Selenium m /L 0.0036 5 0.05 CA primary MCL Sodium m /L 740 Not applicable 30-60 Taste & odor Specific conductance pmhos/c 4,340 Not applicable 900 CA secondary MCL Sulfate m /L 885 Not applicable 250 CA secondary MCL Total alkalinity (as CaCO3) m /L 920 None None None Total dissolved solids m /L 3,300 Not applicable 500 CA secondary MCL Total hardness as CaCO m /L 58 None None None Total phosphorus (as P) m /L 54 None None None Total trihalomethanes m /L 0.011 Not applicable 0.08 CA primary MCL Vanadium m /L 0.1 6.3 0.063 IRIS Zinc m /L 0.34 500 5 CA seconda MCL a From A Compilation of Water Quality Goals (Marshack August 2007). b MCL— Maximum contaminant level. C IRIS — USEPA Integrated Risk Information System reference dose for drinking water.