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i' Working To Restore Nature Addendum One to Remedial Action Plan March 1, 1993 Coca-Cola Former Distribution Facility, Stockton, California 54006.01 Task 12. O erations Maintenance and Compliance Monitoring and Reporting After the first month of operation, site visits will be made at a minimum once every two weeks for the remainder of the life of the remediation system. Modifications to this typical schedule will be made if additional requirements are specified by the guidelines set forth by the SJVUAPCD in the Authority to Construct and the Permit to Operate for this site. Monthly self-monitoring reports, or as required by SJVUAPCD Permit to Operate, detailing all field and laboratory data collected and results, as well as recommendations if needed, will be submitted for the life of the soil remediation system. Site operations and monitoring will include: monitoring and adjustment of system parameters to optimize VES extraction, treatment, and site cleanup efficiency; periodic sampling and field monitoring of influent and effluent as required by the SJVUAPCD; other penodic maintenance procedures, including inspection and cleaning of all lines, process ' equipment, ensuring that the continuous measuring temperature, flow, pressure, and other recording instrumentation are functional, etc. Parameters monitored and adjusted in the field will include: field measurement of vapor extraction flowrates, induced vacuum responses at onsite wells, and hydrocarbon vapor concentrations measured with an organic vapor monitor approved by the SJVUAPCD. 1 A remote monitoring system will be installed to continuously monitor and periodically report the process variables which can influence the systems' performance and cause an alarm condition. The monitoring system will also notify RESNA's Stockton office when an alarm condition exists so that the condition can be rectified prior to restart of the system. The remote monitoring system will report the process and system data to RESNA's Stockton office on a daily basis. If at an time the results of laboratory analyses or field monitoring y ry y readings show air ' emission limits to be exceeded, a confirmation air sample will be collected immediately and analyzed on a 24 hour turnaround basis. If emission limits are still exceeded, the system will be shut down and any necessary corrective action will be performed before repeating the ' startup sequence. The SJVUAPCD will be notified that regulatory limits were exceeded within 24 hours of such indication. Any additional sampling required by the Operating Permits will be incorporated into the sampling plan after the Permits have been issued. ' PROPOSED SCHEDULE OF WORK The preliminary schedule for the proposed scope of work is summarized in Plate 8, and briefly discussed here. The Task 1 Vapor Extraction Test is completed (RESNA, January 14