SITE INFORMATION AND CORRESPONDENCE

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�A "A San Joaquin/ARCO Meeting Minutes, March 30, 1993 Working To Restore Nature E. Closure 1. definition: SJC indicated that they require destruction of all monitoring wells and completion of remediation (including removal of remedial equipment) before granting closure; therefore, closure will not be granted on sites undergoing post-remedial monitoring; this will affect sites considered for closure on basis of RA/FT studies. 2. monitoring: no discussion 3. hydrologic cycle: no discussion 4. Basin Plan amendments: Beth Thayer stated that she is not aware of the status of the basin plan amendments; she also stated again that federal and state involvement in the military base closures will have II . ARCO Sites (Environmental Consultant; RESNA Industries) SS No. 2130, North El Dorado St. Stockton o Min k Infurna stated that he had just recently re rved the ground-water monitor' data for the fourth quarter 1992. H ould like these reports to be submitt at least before the sampling d of the following quarter. o RESNA informe SJ that the res s of the first quarter ground-water sampling event have en receive and the quarterly monitoring report will be submitted in Apn . R NA presented the ground-water results summarized on a plate. o Mike stated that the gr nd wa in the two upgradient wells (MW-1 and MW-4) has consistent reported mo rate to high levels of hydrocarbons. He asked when ARC intended to ess ground water upgradient and crossgradient fro these wells (i.e. acro Hammer Lane and in the mall parking area). ESNA stated that access drill in Hammer Lane would likely not be ranted by Caltrans. SJ asked th an attempt should be made. o Mike in ired about the results of the air spar pilot test which was conduc d in December 1992. RESNA informed that the data are curre y being evaluated and a final report would be bmitted in April. Prel' inary evaluation indicates that air sparging may be a asible method of mediation. 3