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PUBLIC YEALT8 SERViCES <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer .. P <br /> 445 N. San Joaquin Street • P.O. Box 388 0 Stockton, CA 95201-0388 <br /> (209) 468-3420 <br /> ANDREW S HYDUKE p <br /> P O BOX .923 <br /> STOCKTON CA 95207 AUG 2 2 199'` <br /> i <br /> RE : Valley Motors SITE CODE : 1166 <br /> 800 E . Main St . <br /> Stockton, CA 95202 <br /> Results of soil sampling from borings SB1 and SB2 from <br /> a subsurface investigation in April 1994 indicate that <br /> petroleum constituents exist at the highest seasonal <br /> ground water depth of 30 feet below ground surface <br /> recorded in Spring of 1986 . <br /> Such evidence indicates that contaminated soils were in <br /> contact with the shallow ground water beneath the site <br /> and therefore PHS-EHD will require a ground water <br /> investigation to be conducted. <br /> Soil analyses from SB4 and SB5 provide evidence that <br /> the soil in the southerly area of the tank pit has not <br /> been impacted by the unauthorized release documented on <br /> October 25 , 1990 . PHS-EHD considers the " zero" line <br /> delineated to the south, in the area of SB4 and SB5 , <br /> but not defined in the other quadrants . <br /> The presence of Stoddard Solvent in SB1=3 , SBI-5 , <br /> SB2-4 , and SB3 -3 will require further investigation and <br /> a background check to verify the source of this <br /> contaminate . <br /> Further investigation- shall be proposed to deal with <br /> the unresolved areas and a work plan shall be submitted <br /> by November 30, 1994 that will address both the soil <br /> and ground water issues . <br /> A Di%ision of San Joaquin County Health Care Services <br />