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A <br /> Bob Mulford Page 2 <br /> There is no preliminary assessment data to characterize the extent of contamination beneath the <br /> dispensers , which have been removed, or the product lines , which are still present. PHS/EHD <br /> recommends additional investigation to assess the need for corrective action in these areas . <br /> PHS/EHD requires a work plan which describes a method to provide data necessary to assess <br /> the extent of soil and groundwater contamination beneath the northern excavation, the dispenser <br /> island , and the product lines . In addition to the investigation work plan, you may submit a work <br /> plan for interim remediation of this area by excavation and disposal of contaminated soil as you <br /> indicated during our meeting . A work plan for interim remediation or additional investigation <br /> should be submitted by November 15 , 1995 . PHS/EHD requires the approved work plan to be <br /> initiated by December 1 , 1995 . <br /> If you have any questions please contact Steven Sasson, REHS at (209) 468-3459 . <br /> Donna Heran, REHS , Director <br /> Environmental Health Division <br /> Ste en Sasson, Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> SS <br /> Enc . <br /> c : SWRCB , Underground Storage Tank Section - Lori Casias <br /> c: CRWQCB , Central Valley Region - Elizabeth Thayer <br /> c: The Twining Laboratories - Ken Jones <br />