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T-0 A_tea <br /> California Regional Nater Quality Control Board . ,. <br /> Central Valley Region y <br /> t, Karl E. Longley,Sc D,P.E.,Chair <br /> Linda S.Adams Arnold <br /> Secretor��for 11020 Sun Center Drive 4200,Rancho Cordova,California 95670-6114 <br /> l:nvironinenlal <br /> Phone(916)464-3291 -FAX(916)464-4645 Schwarzenegger <br /> htt :/h«v�v.waterboards.ca., v/centralvalley, Governor <br /> Protection p oo <br /> 3 November 2009 <br /> Ms. C. Susi Jackson RECEIVED <br /> Environmental Protection Department NOV 0 b 2009 <br /> Lawrence Livermore National Security, LLC <br /> P.O. Box 808 L-626 ENVIRONMENTAL HEALTH <br /> Livermore, CA 94551-0808 DEPARTMENT <br /> DRAFT REVISED MONITORING AND REPORTING PROGRAM ORDER NO. R5-2008-0148, <br /> LAWRENCE LIVERMORE NATIONAL LABORATORY EXPERIMENTAL TEST SITE 300, <br /> LAWRENCE LIVERMORE NATIONAL SECURITY LLC, SAN JOAQUIN AND ALAMEDA <br /> COUNTIES <br /> Enclosed for your review is the draft Revised Monitoring and Reporting Program Order No. <br /> R5-2008-0148 (MRP). The revisions to the MRP include the following: <br /> 1. Addition of a requirement to the sewage pond influent monitoring which requires the <br /> Discharger to verify that superchlorinated water to be discharged to the sewage pond has <br /> been dechlorinated to reduce the chlorine residual to a level no greater than 2 parts per <br /> million. <br /> 2. Replacement of monitoring well W-26R-03 with monitoring well W-25N-22 because <br /> monitoring well W-26R-03 functions as an extraction well in the CERCLA remedial system <br /> and monitoring network. <br /> 3. For mechanical equipment discharge monitoring, the requirement to collect composite <br /> samples was changed to grab samples until the first semester of 2010. The Discharger can <br /> not collect composite samples representing a full day of operation until the current clean <br /> outs are replaced with adequately sized sampling vaults to allow equipment to be installed <br /> to remotely collect composite samples. Composite samples will be collected starting first <br /> semester 2010 after the Discharger has retrofitted the sampling vaults. <br /> 4. Removal of specific monitoring requirements for four septic systems. The monitoring <br /> requirements for the four septic systems were removed because the groundwater below <br /> these septic systems is under CERCLA remediation. LLNL staff is conducting a study of <br /> all septic systems as required by Waste Discharge Requirements Order No. 85-2008- <br /> 0148. Based on the study, the MRP will be revised to include groundwater monitoring for <br /> the septic systems that are determined to threaten beneficial uses of groundwater. <br /> 5. Updates to the tables of analytes, analytical methods and reporting limits to include <br /> footnotes regarding analytical methods and clarification of the analytes to be included in <br /> the metals suite. <br /> California Environmental Protection Agency <br /> Zc" Ren cled Paper <br />