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e8 01 03: 08P DDJC-FA 209 839 4949 P_ 2 DEFENSE LOGISTICS AGENCY DEFENSE DISTRIBUTION DEPOTSAN JOAQUIN P.O.BOX 960001 STOCKTON,CA 95296 IN REPLY REFER TO DDJC-FA August 27, 2001 Mr. Michael Work U.S. Environmental Protection Agency Region 9 75 Hawthorne Street San Francisco, CA 94105-3901 Dear Mr. Work: Pursuant to the DDJC-Tracy Site Federal Facilities Agreement (FFA), Defense Distribution Depot San Joaquin (DDJC) requests an extension for the DDJC-Tracy draft final Amendment to the Record of Decision (ROD)for DSTRTS 72, OU-1 GWTP surface discharge, and SWMU 4 (Primary Document), and the Remedial Action Report, Small Excavations (SWMUs 4, 6, 20, 27 and Wet Season Controls) (Primary Document). Furthermore, DDJC requests the removal of the Design, Construction QA/QC Plan and Remedial Action Work Plan for SWMU 4(Primary document) from the FFA schedule, due to the acceptance of Alternative 3a for SWMU 4 in the Amendment to the DDJC-Tracy ROD. This extension is requested in accordance with Sections 9.2(b), 9.2(d), 9.2(e) and 26.1 of the FFA. The Amendment to the ROD extension is requested to respond adequately to recently received comments from regulatory agencies, and to better accommodate the development of a proposed plan and public meeting/review timetable for the document. Comments on the draft ROD Amendment were due on 13 July fir om the regulatory agencies; the latest comments received were dated 31 July 2001. An extension is therefore necessary to adequately respond to and incorporate these comments. The Remedial Action Report for Small Excavations extension is requested to respond adequately to recently received comments from regulatory agencies. Comments on the draft RAR report were due on 29 June 2001, from the regulatory agencies; the latest comments received were dated 6 August 2001. An extension is therefore necessary to adequately respond to and incorporate these comments. The request to remove the SWMU 4 design/work plans from the FFA schedule is due to the agreement to accept Alternative 3a in the Amendment to the ROD for this site. Alternative 3a calls for continued groundwater and stormwater monitoring, the installation of a weir and inclusion of the site as part of the next 5 Year Review. This remedy is already being undertaken as part of the DDJC-Tracy monitoring program, and the weir was designed, installed, and documented as part of the Small Excavations design and RAR reports. Therefore, the Federal Recycling Program 1V Prlmed On Recycled Paper 08/28/01 TUE 15:06 [TX/RX NO 72081