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Page 2 <br /> Robert Phillips <br /> Based upon the nondetectable soil results from MW#1, MW#3, MW#4, MW#5 and B7 which <br /> were positioned around the tank field it appears the contamination documented at the time of tank <br /> removal is not large and is isolated. A mass volume estimation of the residual must be calculated <br /> and reported. <br /> Further soil and groundwater characterization needs to be performed in the area of MW#2 to <br /> define contamination limits. Once those limits are established, a "Problem Assessment Report" <br /> and "Corrective Action Pian�� shall be submitted to PHS/EHD for review and comment. <br /> A workplan to conduct further soil and groundwater sampling must be approved by PHS/EHD <br /> before field inspections can be scheduled. <br /> if you need clarification or have any further questions regarding this matter contact,Harlin Knoll, <br /> REHS, at (209) 468-3442. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Harlin Knoll, Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> HK <br /> cc: CVRWQCB, Elizabeth Thayer <br /> cc: Beacon/Ultramar <br />