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681 Lockeford, Lodi <br /> Page 2 <br /> PHS/EHD evaluated the waste oil UST as a soil only case in January 1995. When <br /> contacted about the above ground diesel tank contamination case, PHS/EHD <br /> recommended that a case closure report be prepared for your agency's review and <br /> comment since that was not done previously. The soil remediation was conducted to a <br /> depth of 22 feet below surface grade and at that time it was determined that this would <br /> adequately protect the groundwater. With respect to current investigation requirements <br /> PHS/EHD has the following comments for your consideration. Impact to groundwater <br /> was not investigated and seasonal high groundwater in the area is approximately 35 feet <br /> below surface grade. MTBE was not being analyzed for at that time. <br /> If you have any questions concerning this matter, please contact me at (209) 468-3449. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Supervising REHS <br /> Site Mitigation Unit <br /> c: SECOR - Jaff Auchterlonie <br />