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Workplan for Additional Assessment <br /> 49 South Wilson Way <br /> May 4, 1998 <br /> Page 6 <br /> c. Collect one (1) groundwater sample from each of the four existing wells and one <br /> F (1) duplicate sample for QC following monitoring well purging, and submit each <br /> sample to be analyzed by a State of California-approved laboratory for analyses <br /> of TPHgBTEX and oxygenates, using EPA Methods 8015W8020 and 8260, <br /> f respectively; and <br /> d: Provide all of the necessary equipment and materials to perform the required <br /> q services. This equipment will include groundwater sampling equipment. <br /> Task 4: Reporting and Agency Interaction <br /> Consultant shall: <br /> a., Provide a brief letter report summarizing the groundwater sampling activities; <br /> b. Provide all of the necessary equipment and materials to perform the required <br /> services. This equipment will include drilling, soil sampling and groundwater <br /> sampling equipment,concrete coring equipment, asphalt cold patch or concrete; <br /> and <br /> c:1 Prepare a report of findings (Soil and Groundwater Investigation Report) for the <br /> !' subject property, including the location of the new boring, numbers of samples <br /> taken, results of each sample analyzed, and the conclusions based on the <br /> analyses of these samples. The report will also include the requested items, such <br /> as "Rose Diagrams" and a site specific "Flow Net". The reports will provide an <br /> opinion regarding the potential for environmehtal contamination of the site with <br /> recommendations. <br /> If this workplan is acceptable to the PHS/EHD, please contact the undersigned at (818) <br /> 500-1898. We are prepared to commence work immediately upon receipt of agency <br /> approval. <br /> Sincerely, <br /> BUILDING ANALYTICS <br /> o e a, R.G., C.E.G. <br /> Se olog s <br /> Jan H. utze, Sc., R.G. <br /> Vice President,Environmental Services <br /> Enclosures: Attachment"A"-Site Vicinity Map <br /> Attachment`B" -Proposed Boring Locations Map <br /> 6 198075-WFB Stockton,Workplan <br /> .s <br /> II <br />