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Ms Carol Oz Project 20805-147 007 <br /> February 19, 1999 <br /> Page 3 <br /> methyl ether using USEPA Method 8260, and total lead using USEPA Method 7420 <br /> Additional Excavation and Soil Sampling <br /> If warranted, Pinnacle will observe limited overexcavation in the vicinity of the former <br /> product lines and dispenser locations If field evidence indicates hydrocarbons remain in <br /> place Pinnacle will direct the subcontractor to overexcavate until field screening data <br /> (using a photoionization detector [PID]) of soil samples collected from the base and <br /> sidewalls of the excavated area indicate soil containing relatively high concentrations of <br /> hydrocarbons have been removed Overexcavation of soil will be limited to two feet <br /> laterally and six feet vertically <br /> Stockpiled Soil Sampling <br /> Soil generated during the removal of the product delivery lines and dispensers will be <br /> temporarily stored on site and placed on and covered with visqueen One four point <br /> composite sample will be collected for every 100 cubic yards of stockpiled soil The <br /> samples will be composited by the laboratory and will be analyzed for TPHG, BTEX, and <br /> total lead using the methods discussed above <br /> Reporting <br /> Pinnacle will prepare a report summarizing the product delivery line and dispenser <br /> removal activities and verification soil sampling Copies of the certified analytical reports <br /> will be appended <br /> Please call if you have any questions regarding this workplan <br /> Sincerely, <br /> Pinnacle <br /> A�/ <br /> /David Foley Mark Capps <br /> Staff Geologist Project Manager <br /> R G 6561 <br /> CP\E\ARC0121861REP0RTS12186P101 DOC-98\Isg 1 �� <br />