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I� <br /> Ix <br /> i <br /> PETER D'AMICO <br /> HAROLD FODY <br /> PAGE 2 <br /> this contaminated backfill material couldnot,, be determined at <br /> the time of the piping removal as the area was quite extensive, <br /> especially to the north of the dispenser 'island., This area must <br /> be investigated with .soil borings . <br /> As several soil borings will be required, ,1in addition to any <br /> needed vapor extraction wells, in these areas!p PHS/EHD recommends <br /> this work be completed with a drill rig capable of operating <br /> underneath the existing canopy and beforelthe.ifinal slab is <br /> { completed at the site Otherwise this work '"shall be completed <br /> i <br /> within 45 days of the reopening of the station". In any event, <br /> please include this additional work in the workplan addendum as <br /> mentioned above. <br /> During a site visit by PHS/EHD staff on December 1, 1994 , <br /> additional fiberglass product piping was "observed protruding to <br /> the north out from under the kiosk located onhthe middle <br /> dispenser island. The piping extends tothe northern portion of <br /> the site, an area for which PHS/EHD has no record of underground <br /> storage tanks . This piping must be removed and soil samples <br /> obtained from over the length of the piping run. <br /> If you have any questions or wish to discuss :this letter in more <br /> detail , contact Diane Hinson, Supervising REHS, at.. (209) 468-3452 <br /> or Doug Wilson, Supervising REHS, at (209) 46I,8--344`6 . <br /> Donna Heran, R. E.H.S . , Director <br /> I Environmental Health Division <br /> i3 id i <br /> Diane M. Hinson Doug Wilson I <br /> Supervising R.E.H. S . Supervising R.E.H. S . <br /> Site Mitigation Unit Underground Storage Tank Unit <br /> IF <br /> DMH/lt <br /> C '. CVRWQBC, Seth Thayer i; <br /> C : Office of the District Attorney, David I: ey j <br /> ih If <br /> :4 <br /> F <br /> y <br />