SITE INFORMATION AND CORRESPONDENCE

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STA )F CALIFORNIA _ GEORGE DEUKMEJIAN,Governor 'CAL, -ORNIA REGIONAL WATE QUALITY CONTROL BOAR— .• CENTRAL VALLEY REGION 3443 RINTO, SACRATIER ROADCA 95827-3098 o 8 October 1987 ENv`R��` FERM Mr. Robert 0. Godwin, Associate Director University of California Lawrence Livermore National Laboratory P.O. Box 808 Livermore, CA 94550 REQUEST FOR REPORT OF WASTE DISCHARGE, UNIVERSITY OF CALIFORNIA, LAWRENCE LIVERMORE NATIONAL LABORATORY SITE 300, SAN JOAQUIN COUNTY Waste discharge requirements (WDRs) for the two active landfills (Pits 1 and 7) at Lawrence Livermore National Laboratory (LLNL) Site 300 were adopted in 1980 (Order No. 80-184) . The WDRs no longer reflect the policies of the Board and need to be updated to meet the requirements of the California Administrative Code Title 23, Chapter 3, Subchapter 15 . Therefore, we request you submit a Report of Waste Discharge (RWD) and filing fee. The appropriate forms, instructions, and filing fee schedule are enclosed. The .RWD should include all the information specified in Article 9 of Subchapter 15. In the RWD, you must indicate what classification you wish to pursue for each landfill . Both are currently classified as II-1 under the old Subchapter 15, and both accept hazardous waste which also is regulated by the federal Resource Conservation and Recovery Act MORA) . The new Subchapte 15 requires h a r c u irec azardc S waste to be disposed of in a Class I landfill , and Class I �siting criteria (Section 2531 , Subchapter 15) require such a landfill to be underlain by a sufficient thickness of "natural geologic materials which have a permeability of not more than 1 x 10-7 cm/sec" . "Sufficient thickness" has been interpreted to mean approximately 20 feet. If the current Class II-1 landfills cannot meet the Class I siting criteria, they will have to close and the new WDRs will include a time schedule to submit and implement a detailed closure plan. If feasible, LLNL may wish to treat and/or separate the waste stream and analyze to obtain a "designated waste" classification. In this case, the waste could be discharged to a Class II landfill which does not require compliance with the Class I siting criteria. The RWD should consider all options and state what LLNL wishes to do.