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MONITORING AND RESPONSE PLAN - SC ARCO PRODUCTS COMPANY FACILITY WITH DISPENSER SPILL CONTAINMENT DEVICES ARCO FACILITY: 6100 ADDRESS: 25775 S. Patterson Pass Road Tracy, CA This is a monitoring and response plan of action for facilities with spill containment devices installed beneath the dispensers. 1. CONTAINMENT EQUIPMENT Secondarily contained storage tanks and lines at this facility are to be monitored by a continuous electronic leak detection system, which consists of an alarm panel, sensors and associated electronics. Liquid sensors are installed in the annular space of each double-wall tank and product line-piping sump, as well as at each one of the dispenser containment sumps. Whenever a sensor detects presence of liquid, there is both an audible and visual alarm at the control panel. In addition, this continuous monitor on the piping system will shut down the pump and activate the alarm system when a release is detected or the continuous product piping monitoring system fails or is disconnected, the pumping system will shut down. Electronic automatic leak detectors (3GPH) are installed on the secondarily contained pressurized product piping as part of the turbine. The line leak detector will detect a loss of pressure in the product lines and restrict the flow of product. The model numbers for the associated montioring system are as follows: Description Model Number Monitoring Panel —Veeder Root TLS 350 Monitoring VR-847090-002 Control Panel Liquid Sensor for the Tank Annular Space—Veeder Root VR-794390-409 Liquid Leak Sensor at Turbine Sump—Veeder Root VR-794380-205 Liquid Leak Sensor at Dispenser Containment VR-794380-208 Sumps—Veeder Root Mechanical Line Leak Detector/3GPH Vaporless 2. MAINTENANCE SCHEDULE The containment devices will be inspected according to the manufacturer's instructions by an outside contractor once during each calendar year.