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�rA.M..u� <br /> Mid " WAF a <br /> Working to Restore Nature <br /> WORK IN PROGRESS <br /> We understand that Ruiz Grocery has submitted a reimbursement request to the State <br /> Underground Storage 'Tank Clean-up Fund. A portion of the reimbursement monies will <br /> be used to fund insurance bonds required by San Joaquin County Public Works Department <br /> to install offsite monitoring wells After funding has been obtained, Ruiz Grocery will install <br /> one additional onsite and three offsite monitoring wells in an effort to establish the limit of <br /> dissolved hydrocarbons in groundwater and to monitor groundwater upgradient and lateral <br /> of know hydrocarbons in soil Once the extent of hydrocarbons has been assessed, a <br /> Problem Assessment Report will be prepared and activities leading to site remediation will <br /> begin. <br /> CONCLUSE®NS AND RECOMMENDATIONS <br /> Free-phase hydrocarbons were detected in well MW-1, and dissolved hydrocarbons were <br /> detected in well MW-2 The reported concentration of benzene exceeds the Maximum <br /> Contaminant Level (MCL) for drinking water of 1 ppb Hydrocarbons were in well MW-3 <br /> during this sampling event The groundwater flow direction was to the northeast. We <br /> recommend continuing quarterly monitoring <br /> . DOCUMENT DRSTRIIBUTRON <br /> We recommend distributing copies of this report to the following <br /> Ms Mary Meays <br /> San Joaquin Public Health Services <br /> 445 North San Joaquin <br /> Stockton, California 95202 <br /> Ms Elizabeth Thayer <br /> California Regional Water Quality Control Board <br /> Central Valley Region <br /> 3443 Routier Road <br /> Sacramento, California 95827-3098 <br /> M <br /> • 02011goii123020-1 3 <br /> i <br />