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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor - Stockton, CA 95202 a <br /> 2091468-3420 FILE C <br /> ALI sAHEH ALI JUL 3 01999 <br /> 17717 E HWY 120 <br /> RIPON CA 95366 <br /> RE: Gubary Liquors SITE CODE: 1592 <br /> 17717 E Hwy 120 <br /> Ripon CA 95366 <br /> San Joaquin County Public Health Services, Environmental Health Services (PHS/EHD) has <br /> reviewed the "Work Plan, Preliminary Site Investigation" dated July 13, 1999 that was prepared <br /> by Geological Technics Inc. (GTI) for the above referenced site and has the following <br /> comments. <br /> On March 17, 1999 three gasoline underground storage tanks (UST) were removed under <br /> permit and inspection from the subject site. Upon analysis, soil samples collected from beneath <br /> the tanks evidenced petroleum hydrocarbon contamination under the south end of tank#2. The <br /> work plan proposes to investigate the vertical extent of this contamination with the advancement <br /> of one soil boring to approximately 60 feet below surface grade (bsg). Soil samples will be <br /> collected every five feet, and one grab groundwater sample will be collected after the boring <br /> reaches the capillary fringe. The water sample and up to five soil samples will be submitted for <br /> analysis. Please note that the acceptable detection limit for analysis of methyl tertiary butyl <br /> ether (MTBE) is 5-10 parts per billion (ppb) in soil and .5-1.0 ppb in water. <br /> The work plan states that prior to beginning the investigation, the former tank pit will be <br /> backfilled. It is the recommendation of PHS/EHD that all soil stockpiles remaining on site be <br /> used for this purpose. <br /> The work plan as outlined above is approved. Please submit to PHS/EHD a well permit <br /> application and required $89.00 permit fee, and proceed with scheduling the fieldwork. If you <br /> have any questions or comments please call Lori Duncan at (209) 468-0337. <br /> Donna Heran, RENS, Director <br /> Environmental Health Division <br /> �.w`CA <br /> Lori Duncan, REHS Margare agorio, RE <br /> LOP/Site Mitigation Unit IV Supervisor, Unit IV <br /> cc: Mark List, CVRWQCB <br /> Ray Kablanow, GTl <br /> A Division of San Joaquin County Health Care Services <br />