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August 9, 1994 ARCO Meeting Page 2 <br /> 7906 N. El Dorado St., Stockton ARCO Facility 42130 <br /> PHS/EHD contact - Michael Infurna <br /> The recently submitted Problem Assessment Report (PAR) requires an addendum evaluating an additional <br /> remedial alternative and a feasibility study as per the Corrective Action Regulations, a copy of which was <br /> provided to you during the meeting. A permit application with an $89 fee to install the additional wells <br /> should also be submitted, as proposed in the PAR. The monitoring well recently covered with a new asphalt <br /> layer is to be located, repaired as necessary, and sampled immediately. An update to the site map shall be <br /> submitted and PHS/EHD requests that the "B" designations of wells be dropped in an attempt to avoid <br /> confusion. The wells which are currently hooked up to the vapor extraction system should be clearly <br /> presented. Quarterly monitoring reports for first and second quarter, 1994 are to be submitted to PHS/EHD <br /> immediately and future reports shall be submitted prior to the next quarter' s monitoring event. A complete <br /> "zero" line for both soil and groundwater has not been delineated. Proposals to complete this requirement <br /> shall be included within a PAR addendum along with a time schedule for their timely implementation. <br /> 441 W. Charter Way, Stockton ARCO Facility #2168 <br /> PHS/EHD contact - Michael Infurna <br /> Quarterly reports are overdue for this site and both first and second quarter 1994 reports shall be submitted <br /> to PHS/EHD and CVRWQCB immediately. Future quarterly reports shall be submitted prior to the next <br /> quarter' s monitoring. An addendum to the PAR shall be submitted and will include a discussion and a <br /> feasibility study for an additional alternative remediation proposal that would restore the groundwater to <br /> beneficial use status. Further discussions shall be scheduled to consider the possible off site and upgradient <br /> source(s) of groundwater contamination and shall include other responsible parties, as well as PHS/EHD <br /> and Arco representatives. <br /> 800 E. Kettleman, Lodi ARCO Facility 2076 <br /> PHD/EHD contact - Mary Meays <br /> The groundwater sample results of the "Fourth Quarter Monitoring Report" evidenced groundwater <br /> contamination. Kyle Christie indicated that there was some problems with the decontamination procedures <br /> which were being used by the sampling firm. There are no plans to begin soil remediation within the next <br /> year; however, the groundwater will continued to be monitored and sampled quarterly. <br /> c <br /> 1612 Hammer Lane, Stockton ARCO Facility #548 <br /> PHS/EHD contact - Mary Meays <br /> The contents of the PAR were discussed and the addendum which was requested by PHS/EHD was <br />! submitted at the meeting. <br /> E <br /> The contamination which was detected in MW6, during the first quarter 1994, may have been a result of <br /> the decontamination procedures used because numerous sites which had never evidenced groundwater <br /> contamination had detectable contamination during this sampling event. PHS/EHD was informed that no <br /> contamination was detected in the samples collected during the second quarter monitoring event, thus <br /> indicating that the groundwater plume has been defined. <br /> i <br /> E <br />