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— - <br /> F Inc. Environmental and Engineering Group <br /> �. Post Office Box 427 <br /> a ^ <br /> €+ s°' Oakdale, CA 95361 <br /> Office: (209) 848-4280 <br /> PIAN, 2 1 Fax: (209) 848-4282 <br /> Jeffrey Wong, REHS E€Vli €°''U€ " '.''May 19, 1999 <br /> LOP/Site Mitigation Unit IV <br /> San Joaquin County PHS/EHD <br /> 304 East Weber Avenue, Third Floor <br /> Stockton, CA 95202 <br /> Re: Boyett Petroleum <br /> 419 S. Main Street <br /> Manteca, CA 95336 <br /> Dear Mr. Wong, <br /> Please find enclosed one (1) copy of the Work Plan for Lateral and Vertical Extent of <br /> Contamination, Addendum for Boyett Petroleum, 419 S. Main Street, Manteca, California. <br /> WHF would like to inform you that the Well Survey can not be completed by the June 5, 1999 <br /> date set by your office. All work to be performed regarding this site must go through the bid <br /> process and State pre-approval prior to commencement of work. The time frame for this process <br /> is approximately 60-90 days. If approval to commence work is granted to WHF, the Well Survey <br /> will be completed in a timely fashion. <br /> WIN will perform the soil sampling at each significantly different soil phase change, but we <br /> request your suggestion as to how the lithologic phase changes in the subsurface materials are to <br /> be determined. In many cases the phase changes are mixed once the soil cuttings reach the <br /> surface, or top of the auger, used in the drilling process. It is very difficult or impossible to <br /> determine phase change locations by examining the cuttings brought to the surface by the auger. <br /> Thank you for your time and suggestions regarding this matter. If you have any questions or <br /> comments please feel free to contact our office. <br /> Sincerely, <br /> Jason P. Cashman, M.E.M. <br /> WHF, Inc., Environmental and Engineering Group <br /> cc: Boyett Petroleum-Dale Boyett <br />