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SEPTEMBER 1992 QUARTERLY STATUS REPORT (CONTINUED) • Time schedules for the completion of the investigation of the site and remediation; The monthly monitoring and quarterly sampling program will continue for a period of one year from the start of the program (June 1992). The work plan for the supplemental subsurface investigation will be submitted to the EHD for review and approval before November b, 1992, prior to initiating any further investigative work at the site A determination of whether or not further work is required at the site will be made after the data obtained from the supplemental subsurface investigation and groundwater monitoring program are evaluated. • Method and location of disposal of the released hazardous substance and any contaminated soil, groundwater or surface water; No released hazardous substances or contaminated soil, groundwater, or surface water were handled at the site during the September 1992 quarter During the fueling system closure in May 1991, excavated soils were observed to be clean, and, consequently, placed back into the tank pit and fuel line excavations ® Manifest required for transport of hazardous substances; Not Applicable • Monitoring well data; The physical data for all of the monitoring wells located at the facility are presented in Table 1 Figure 1 is a site map showing the monitoring well locations and water levels measured in September 1992 No free-product or hydrocarbon sheen has been observed in any of the on-site monitoring wells to date • Analytical results of groundwater or soil sampling; Results of the second sampling event on September 1, 1992 are summanzed in Table 2 BTEX and TPH-D concentrations were below the method detection limits in all of the groundwater samples collected LMLISY139 311294 REV 3 2