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PUBLIChEALTH SERVICES N_U.Iov <br /> SAN JOAQUIN COUNTY z: <br /> ENVIRONMENTAL HEALTH DIVISION �' { <br /> Ernest M. Fujimoto, M. D., M.P.H., Acting Health Officer <br /> 304 E. Weber Ave., Third Floor • P. O. Box 388 • Stockton, CA 95201-0388 <br /> 209/468-3420 <br /> c� <br /> GARY WEINBERGER MAILED MAR 0 71996 <br /> JVM ASSOCIATES PARTNERSHIP <br /> 5601. WEST MOJAVE <br /> PHOENIX AZ 85031 <br /> RE : SWIFT TRANSPORTATION SITE CODE: 1075 <br /> 781 Swift Way <br /> Stockton, CA 95206 <br /> San Joaquin County Public Health Services, Environmental Health <br /> Division (PHS-EHD) has reviewed the "Quarterly Status Report- <br /> First, 1996" as submitted by Wallace-Kuhl & Associates and has <br /> the following comments . <br /> Due to pending off-site encroachment permitting delays, this site <br /> failed to submit quarterly monitoring reports for the second, <br /> third, and fourth quarters of 1995 . PHS-EHD has discussed this <br /> problem with your consultant, Kurt Balasek, and has concluded <br /> that this was a one-time problem and it will not re-occur in the <br /> future . <br /> At the very least, FHS-EHD will require gradient information to <br /> be submitted for review and evaluation every quarter. <br /> Currently groundwater below this site has risen above the <br /> monitoring well screened intervals . There are two options <br /> currently available for this site . One option is to replace the <br /> affected wells with new monitoring wells screened above current <br /> groundwater level . <br /> Another option, but unfortunately not as successful , is a strong <br /> pumping event that draws the surface of the groundwater down <br /> below the screened interval long enough to allow the surface <br /> groundwater to enter the casing and be sampled before it rises . <br /> One drawback is the production of much greater amounts of purge <br /> water that will need to be properly handled and disposed of . <br /> If groundwater levels remain above the screened interval for <br /> longer than a full hydrogeolical year without successful pumping <br /> events, PHS-EHD will require replacement wells to be installed. <br /> A Division of San Joaquin County Health Care Services <br />