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4 <br /> W" <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN_COUNTY <br /> ;ENVIRONMENTAL HEALTH-DIVISION <br /> Karen .Furst, M.D., M.P.H., Health Offieer � <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 2091468-3420 <br /> RONALD NUNAN 1 JON JERNIGAN <br /> 651 GATEWAY BLVD. -1� <br /> "�UITE.790 <br /> S. 5\FRANCO CA 94080 <br /> k <br /> F , <br /> RE: ND-COUNTRY CHEVRON Site Code: 1621 <br /> _ HWY 88 1 <br /> RD CA 95237 <br /> Sann Public Health Services Environmental Health Division PHS/EHD hasty > { }reviended.Workplan for a'Additional Subsurface Environmental Investigation" dated <br /> j March 20,1998 prepared by GeoSoly, LLC. The work plan is approved with the following <br /> changes: <br /> 1) All samples must be screened using a field PID or.OVM at the field for the selection of <br /> analytical samples: <br />� 2} Samples submitted for analyses musk include input from and agreement with P HS1EHD. <br /> 3) _Analyze samples for oxygenates using EPA method 8260. <br /> i 4) .The borehole may exceed the proposed 40 foot depth if hydrocarbon contamination is <br /> detected at that depth. The drilling will continue until at least ten foot of clean soil is encountered <br /> in the field. <br /> If you have any questions, please feel free to,contact Jeffrey Wong at(209)468-0335. <br /> l <br /> k <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> IG Jeffrey Wong , EHS, Trainee Margafet.Lagorio, REHS <br /> LOPISite Mitigation Unit IV Supervisor <br /> J <br /> II JW:lb \�\� <br /> c: :RWQCB, Central Valley Region - Pat Anderson rA q t - <br /> c: GeoSolv,.LLC - Franklin J. Goldman <br /> A.Division of San Joaquin County Health Care Services . <br />