Johnston Farms - Executive Summary |
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PREVENTION & RESPONSE POLICY Johnston Farms uses a comprehensive environmental management system approach to integrate both accidental release prevention and emergency response requirements under the "One Plan" format. STATIONARY SOURCE & REGULATED SUBSTANCES Johnston Farms is a potato, bell pepper, and citrus packing shed with retail produce sales at the main office. Ton containers of chlorine are used to sanitize produce wash water and propane is utilized for heating purposes in order to maintain optimum temperture and humidity of citrus storage. WORST CASE SCENARIO The worst case toxic gas release scenario is considered to be a ton container of chlorine releasing its entire contents in ten minutes. The worst case flammable gas release scenario is assumed to be the release of the entire contents of the 10,000 gallon water capacity propane tank, which when filled to a maximum level of 88% as an administrative control, would involve a total quantity of 36,460 pounds of liquified pr opane which can possibly be released. The released propane is assumed to form a vapor cloud and only 10% of the vapor in the cloud is assumed to participate in an explosion. ALTERNATIVE RELEASE SCENARIO The alternative toxic gas release scenario is considered to be a ruptured valve on the chlorine ton container with a maximum release rate of 15 pounds per minute. The alternative flammable gas release scenario is considered to be a propane delivery truck pulling away from the loading rack while still connected, and the released propane causing a vapor cloud fire. The excess flow valve on the propane tank is assumed to function to stop the release and limit the released quantity of propane to only 69 pounds. ACCIDENTAL RELEASE PREVENTION PROGRAM Johnston Farms has integrated the California Accidental Release Program (CalARP) requirements within a comprehensive environmental management system based on the "One Plan" format. FIVE YEAR ACCIDENT HISTORY Johnston Farms has not had an ac cidental release of a regulated substance during the past five years. EMERGENCY RESPONSE PROGRAM Johnston Farms uses a comprehensive environmental management system approach to integrate both accidental release prevention and emergency response requirements under the "One Plan" format. PLANNED CHANGES TO IMPROVE SAFETY All chlorine containers will be secured to anchored truncheons or otherwise chocked and secured while in service or storage. All regulated substance storage areas will be labeled with the appropriate National Fire Protection Agency (NFPA) hazard warning placards. |