SITE INFORMATION AND CORRESPONDENCE

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MEMORANDUM CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD - CENTRAL VALLEY REGION 3443 Routier Road Phone: (916) 361-5600 Sacramento, CA 95827-3098 ATSS: 8-495-5600 I A TO: Antonia Vorster I�, FROM: Robert Niblack Senior Engineer j',' Project Geologist DATE: 1 October 1987 SIGNATURE:, SUBJECT: PORT OF STOCKTON FUEL TERMINAL GROUND WATER INVESTIGATION, SAN JOAQUIN COUNTY A report titled Groundwater Investigation Phase I: Hydroaeologic Setting and Site History Petroleum Storage and Handling Terminal was received by the Regional Board on 12 July 1987. A workplan for a proposed Phase II Investigation was also included. Both were prepared by Woodward-Clyde Consultants (WCC) . The following comments address the deficiencies of the report and workplan as they relate to Attachment 2 of our 16 June 1987 letter: GENERAL COMMENTS 1. The Port and the tenants involved in the ground water investigation have shown a willingness to define the extent of contamination at this site. They did initiate a ground water investigation. However, the magnitude of the problem at the Port requires a much greater effort than has been made at this time. 2 . Attachment 2 of our letter of 16 June 1987 was very specific as to the items to be addressed by this investigation. It indicated the scope of the investigation we feel is necessary for an adequate characterization of the problem at the fuel terminal area. The Port's response (the report and work plan) did not adequately address the minimum requirements in that attachment. 3 . Some major deficiencies include: 1. A lack of monitoring wells or proposal to install monitoring wells. No representative ground water samples are available from this area, nor is a mechanism to collect them proposed. 2 . No plan to fully characterize the hydrogeologyhas been proposed. 3 . No detailed time schedule for completion of tasks and phases was provided.