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' I <br /> ' <br /> ` Mr. J. Kelly Williamson I8 CORPORATION <br /> Kayo Oil Company <br /> March 14, 1985 <br /> Rage 2 <br /> both wells. All four borehole soil profiles are dominated by silty <br /> sand, with only occasional sandy silt and sand lenses noted in MW-1. <br /> Conclusions and Recommendations <br /> Hydrocarbons are present in the soils above the water table at the <br /> site. The depth of the hydrocarbons suggest that they are spreading <br /> from the tank pit. We recommend that you review your tank test and <br /> inventory records to be sure that there is no active leak on the site. <br /> You should contact the local agencies and the Regional Water Quality <br /> Control Board to inform them that there are hydrocarbons under the <br /> site. We recommend that you monitor the wells for the presence of <br /> hydrocarbons. Two wells should be installed in the tank backfill to <br /> determine if significant contamination is present. <br /> We trust the information contained herein meets your needs at this time. <br /> If you have any questions concerning this work, please feel free to <br /> contact me at our Martinez, California, office (415) 228-8400. <br /> Very truly yours, <br /> Robert M. Galbraith, R.G. 3881 <br /> Manager, Geotechnical Services <br /> RMG:ac <br /> Attachments <br />