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FCB 42 4 1009 <br /> ENVIRONMEN F HEALTH <br /> Z�OOTHILL <br /> PERNII-10-RVICES <br /> ENGINEERING <br /> 8442 STORY RIDGE WAY,,ANTELOPE,CA 95843 <br /> PH:(916)729-5184 AX:(916)729-0593 <br /> February 24, 2009 <br /> Sent via hand delivery <br /> Mr. Michael Infurna <br /> San Joaquin County Public Health Service <br /> Environmental Health Department <br /> 600 East Main Street <br /> Stockton, CA 95202-3029 <br /> Subject: 300 South California Street <br /> Site Code#1038 <br /> Global ID#T0607700605 <br /> Dear Mr. Infurna: <br /> Delays in reimbursements from the Underground Storage Tank Fund (UST Fund) have added up <br /> to$99,946.35 in outstanding funds. This has exhausted Michael and Sharon Olivarez$75,000 <br /> line of credit. <br /> Foothill Engineering has run the pump and treat system until the filters broke through. As of <br /> 2/7/09 the pump and treat system is shutdown awaiting two filter exchanges. The filter <br /> exchanges can not be ordered until additional funds are made available by the UST Fund. <br /> The estimated time for a reimbursement to be processed is 6 to 18 months and with four <br /> outstanding reimbursements it could take two years for the UST Fund to make the outstanding <br /> reimbursements. <br /> Foothill Engineering recommends that the remediation be suspended until the UST Fund gets <br /> caught up so that remediation may resume without interruption. <br /> Suspension of remediation will not have any adverse effects on the public. The plume will not <br /> grow because the source has been removed. There is not an explosive hazard. The plume does <br /> not threaten sensitive receptors. Remediation efforts to date have reduced the original <br /> concentration at the eye of the plume from 140,000ppb TPHg to 43,000ppb TPHg, and has <br /> removed 1,025Kg of gasoline which is 93%of the original estimation of 1,1001(g of gasoline in <br /> the plume. <br /> Foothill Engineering proposes to manage the plume by sampling the downstream wells MW-8S <br /> and MW-8D for the Second Quarter 2009 and then all wells for the First Quarter 2010. Data for <br />