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PUBLIC 'fiEALTH SERVICES <br /> PgUrN <br /> O C <br /> AN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION 2 x <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer 7. <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-038$ <br /> 2091468-3420 <br /> MR FRANK RYAN MAILED JUN 19 199E <br /> FRANK RYAN REALTY <br /> 745 DISTAL DR <br /> LOS ALTOS CA 94022 <br /> RE: Fuller Mobile Home Park SITE CODE: 2491 <br /> 365 East Louise <br /> Lathrop CA 94022 <br /> San Joaquin County Public Health Services, Environmental Health Division <br /> (PHS/EHD), has reviewed the June 5, 1996 Phase III Site Remediation Feasibility <br /> Study Work Plan prepared by WHF, Inc. for the above referenced site. <br /> WHF proposes to define the eastern limit of soil contamination from the former <br /> underground storage tank (UST) release by advancing a boring between the property <br /> line fence and MW-3. Soil data gathered at 16455 and/or 16443 Bizzibe Street would <br /> be a more suitable location to obtain this data. PHS/EHD recommends that you and <br /> these two property owners prepare access agreements which will allow the <br /> investigation to proceed. <br /> Implementation of the feasibility study shall not occur until the easterly limits of the <br /> remaining soil contamination from the former UST is determined and the site <br /> assessment is complete. <br /> In the feasibility study portion of the workplan WHF proposes hydraulic aquifer testing <br /> to evaluate the effectiveness of various remediation techniques. Hydraulic aquifer <br /> testing is a method to determine the intrinsic permeability of the formation. Published <br /> data on intrinsic permeability of the soil types present at this site may be used in lieu <br /> of a hydraulic aquifer test. Intrinsic permeability is the measure of the ability of soils <br /> to transmit fluids. Remediation technologies which are dependant on the intrinsic <br /> permeability of the soil are soil vapor extraction, air sparging, bio sparging, bio <br /> venting and natural attenuation. <br /> A Division of San Joaquin County Health Care Services <br />