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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 /> (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 TPHg/BTEX and oxygenates,.using EPA Methods 8015NU8020 and 8260, <br /> respectively; and <br /> d. Provide all of the necessary equipment and materials to perform the required <br /> 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. 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 environmental 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 /> *H. utz4e, .Sc., <br /> 'a, R.G., C.E.G. <br /> 2_.I <br /> R.G. <br /> Vice President,.Environmental Services <br /> Enclosures: Attachment' -Site Vicinity Map <br /> Attachment"B"-Proposed Boring Locations Map <br /> .6 198075-WFB Stockton.Workplan . <br />