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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION 11020 Sun Center Drive,#200,Rancho Cordova,California 95670-6114 PUBLIC HEARING concerning Consideration of Adoption of Waste Discharge Requirements and Time Schedule Order (National Pollutant Discharge Elimination System Permit) for the REGENTS OF THE UNIVERSITY OF CALIFORNIA AND UNITED STATES DEPARTMENT OF ENERGY LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300 EASTERN GENERAL SERVICES AREA GROUNDWATER TREATMENT SYSTEM SAN JOAQUIN COUNTY The Regents of the University of California and the United States Department of Energy (hereafter jointly referred to as Discharger), own and operate the Eastern General Services Area groundwater treatment system at Lawrence Livermore National Laboratory Site 300 which discharges treated groundwater to Corral Hollow Creek, a water of the United States, in San Joaquin County. The Discharger operates this system as part of a remedial action to clean groundwater polluted with volatile organic compounds (VOCs). This site is on the U.S. Environmental Protection Agency's National Priorities List for cleanup. Through operation of this facility, the Discharger has removed a significant amount of the VOC mass from the underlying groundwater. The Discharger expects the groundwater concentrations to reach the water quality objectives agreed upon in the Record of Decision within five years. With some process optimization, the Discharger can, within the 5 year term of this Order, complete the clean-up activities or reduce the volume of treated groundwater such that other disposal options are viable, thereby eliminating the discharge to surface waters. This proposed Order includes new effluent limitations. Immediate compliance with the new effluent limitations for arsenic, aluminum, chloride, fluoride, nitrate plus nitrite (as N), sulfate, and specific conductance is not possible or practicable. In this situation, construction of new facilities to treat the discharge to the level necessary to meet the new effluent limitations is not economical or necessary considering the Discharger's plans to cease the discharge or find alternative disposal options which would eliminate the discharge to surface waters. Therefore, these proposed Orders provide time schedules for the Discharger to develop, submit, and implement methods to optimize this remediation system to cleanup the groundwater faster and more efficiently, and/or reduce the volume of treated groundwater and find alternative means of disposal or reclamation within the life of the permit term. A formal public hearing concerning this matter was previously scheduled for 27 and 28 January 2005, at the Regional Water Quality Control Board Main Office in Rancho Cordova, California. The date of the hearing has been changed as follows. The hearing considering this matter will now be held during the Regional Board meeting which is scheduled for: DATE: 10 and 11 March 2005 TIME: 8:30 a.m.