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f <br />I ME : 1 L- 0 8 V M <br />Kent Perish will be submitting a revised workplan to the courtt <br />to <br />address the Problem Assessment Report for the site with a proposed <br />time schedule. Laurie and I in our later converstation questioned <br />validity of a soil/gas survey in shallow the <br />zones. Also, there <br />is a domestic well nearby theat has not been sampled and analyzed for <br />the constituents of concern. Kent must be apprised of this so he can <br />address it in his proposal. <br />ut *nd i7 -iii Tracy <br />Inane Hinson received a handwritten proposal from Andrea Karoff and <br />Steve Osborne of Harding Lawson Associates (HLA) to place soil borings <br />and monitor wells at the 7-11 site on Grantline Road. Because it is a <br />ground water contaminated site a proposal was to be submitted to <br />both the local health district and to the Regional Board for review and <br />approval. As I explained to Diane, the proposal should be based on the <br />approved Task 3 of the HLA report of 29 April 1988 IVamely that the <br />borings and wells are based upon the work done in the soil/gas survey <br />in Task 2. <br />Unocal 4707 Pacific A Tp Stockton <br />Keith Romstad of Applied Geosystems brought their Vrorkplan propasal <br />for the site for our review and concurrence today The Lab results <br />from their initial work has been telecopied to Dave Carls of SJLHD on 21 <br />June 1988. My review today shows that the tank cavity has 1900 ppm <br />In the WJE corner of the excavation at 22 feet; and 1800 ppm in the <br />center. This was the extent of the backhoe excavator Seven other <br />periphery samples showed levels at 2.4, 1.6 and five at : 1.0 ppm. <br />The report is being prepared for us. Applied Geosystems and Unocal are <br />aware that the work cannot proceed until the Preliminary Report tis <br />reviewed and approved as complete. Applied Cjeosysterns will modify <br />their proposed workplan to conform to our Regional Board reporting <br />requirements. Unocal has provided a letter of agreement to develop a <br />remediation plan for the site. The Preliminary Report and revised <br />workplan with proposed time schedules are due on 8 Julv 1988 <br />If Unocal places their new tanks in <br />that the operation <br />the excavation, <br />they <br />are aware <br />of the facility will <br />not interfere with <br />the <br />remediation <br />