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X <br /> PUBLICIfEALTH - SER CES' <br /> SAN JOAQUIN COUNTY y <br /> ENVIRONMENTAL HEALTH DIVISION two: <br /> Karen Furst, M.D., M.P.H., Health Officer ' <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420C\& Lr <br /> APR 2 7 1998 <br /> CHARLES SKOBRAK <br /> f <br /> 706 N EL DORADO STREET <br /> STOCKTON CA 95203 s <br /> RE: CHARLIE'S DAY& NIGHT LOCK& KEY SITE CODE: 500990 <br /> 706 N EL DORADO <br /> STOCKTON CA 95203 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) has <br /> reviewed the Site Investigation Work Plan dated 25 March 1998 prepared by Advanced <br /> GeoEnvironmentai, Inc. PHS/EHD"recommends the following changes: <br /> 1) Advance the soil probe borings to depths of at least 65 feet below surface grade (bsg), and <br /> deeper if needed in order to define the vertical extent of the contamination based on field <br /> observation. Of the two former underground storage tanks (UST), one was filled with water in " I <br /> 1978 and the other has not been in operation for an unspecified length of time. Thus the <br /> tanks.have not been in operation since sometime before 1978. Therefore, it is essential to <br /> advance soil borings to a depth between 60 and 70 feet at minimal, which is the area's ground <br /> water historical low in 1978 according to'maps.published by San Joaquin County Flood <br /> Control. <br /> 2) Remove the piping which was left in the ground when the USTs were removed 1n 1997. <br /> 3) Sample soil for analyses at 5-foot intervals as well as at each significant change of lithology. <br /> 4) Analyze samples for all oxygenates using EPA method 8260. i <br /> 5) Selection of samples to be submitted for analyses must include PHS/EHD input and <br /> agreement- <br /> 6) Contaminated soil will be properly stored and eventually;properly disposed. " <br /> If you have any questions, please feel free to contact Jeffrey Wong at(209)468-0335. . <br /> Donna Heran REHS Director <br /> Environmental Health Division <br /> C,(!(- <br /> JeffrWong , E <br /> HS Trainee Margaret Lagono, REHS <br /> LOP/Site Mitigation Unit IV Supervisor <br /> JW:lb <br /> c: RWQCB, Central Valley Region - Pat Anderson <br /> c: Advanced GeoEnvi ron mental, Inc.'-Kevin McKibben <br /> OCT " 2I <br /> } <br /> A Division of San Joaquin County Health Care Services, <br />