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PUBLIC HEALTH SERVICES QPQU�N, <br /> SAN JOAQUIN COUNTY =: ? <br /> } ENVIRONMENTAL HEALTH DIVISION -` <br /> Ernest M. Fujimoto, M.D., M.P.H., Acting Health Officer _ <br /> 445 Ni San Joaquin Street • P. O. Box388 • Stockt <br /> 209/468-3420 <br /> FRANKLYN COLE <br /> MATED JUN 8 3999 <br /> P O BOX 1114 - <br /> TRACY CA 95378-1114 <br /> T <br /> RE : Reichs Grocery • SITE CODE: 1642 <br /> 7505 W. Linne Rd. <br /> Tracy, Ca M <br /> t. <br /> San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS%EHD) has reviewed the "Limited Subsurface <br /> Investigation" ;t. ,dated April 1995 prepared by Advanced <br /> GeoEnvironmental, Inc (AGE) for the above referenced site . <br /> According to PHS/EHD staff field notes there is approximately 43 <br /> feet between borings 33 and. B4 which have defined the extent of <br /> .soil contamination to the north and to the south. Because of the <br /> building to the west and the street to the east, contamination was <br /> not defined in those directions . PHS/EHD feels that it is <br /> justified to estimate that the contamination is limited to the same <br /> distances in those directions . "' <br /> In order to evaluate the feasibility of two remedial alternatives <br /> for cleanup as required by Section 2725 of Title 23 , Division 3 , <br /> Chapter 16 of the California Code of Regulations further <br /> investigation is necessary. <br /> AGE proposed installation of a vapor extraction well at the <br /> location of the former pump island and performance of vapor <br /> extraction tests since excavation of the impacted soil is not <br /> feasible. <br /> PHS/EHD concurs that with the coarse grained soil found at this <br /> site, vapor extraction would be a logical alternative to <br /> investigate . PHS/EHD would require an additional monitoring point <br /> to the vapor extraction well to determine the area of influence of <br /> the vapor extraction well . '' <br /> Another consulting company has contacted PHS/EHD and proposed <br /> insitu bioremediation at this site with addition of only oxygen and <br /> nutrients to -the soil - Insitu bioremediation is a cleanup <br /> technology that has not been used much in San Joaquin County so <br /> the following items would have to be investigated and addressed. <br /> Soil samples would have to be collected so that the type and number <br /> of indigenous bacteria could be identified through laboratory plate <br /> counts . These soil samples could be obtained at the same time that <br /> A Division of San Joaquin County Health Care Services <br />