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Sensors were being actively replaced during the monitoring certification as some were determined to be deficient for <br /> long term monitoring.The PLLD sensors were not dry tested prior to fuel being transferred as fuel is required to be in <br /> the lines to complete that testing. <br /> • What was tested for tank monitoring prior to transfer? <br /> ELD testing was completed on the new tank 5 and TLM, interstice sensors, and liquid sensors were dry tested prior to <br /> fuel being transferred from the existing tank into the new tank. <br /> Questions for the regular (87)fuel tanks and additive tank: <br /> • How long was the monitoring disconnected for the 87 tanks during panel replacement? <br /> Monitoring of the existing tanks was disconnected for 2 hours at the start of construction per the temporary monitoring <br /> plan, and for less than 30 minutes to reconnect as stated above. <br /> • When was monitoring restored? <br /> Monitoring was restored for the existing tanks at time of initial shutdown/construction on 6/6/2022 and on August 18th <br /> when transferring monitoring from the existing Veeder Root to the new Veeder Roots. <br /> • Alarm history : <br /> o Any indication of leak related alarms including Q alarms? <br /> Alarms were generated for all of the sensors during the monitoring certification, but no indication of leaks during the <br /> periods of non-testing monitoring. <br /> o Any indication of pretesting of sensors when panel was replaced? <br /> Pretesting of the sensors was not conducted when the sensors for the existing tanks were transferred from the existing <br /> Veeder Root to the new Veeder Roots, but communication was verified upon completion of transfer, and the sensors <br /> were being read by the Veeder Root. <br /> • How long was monitoring system disconnected during the retrofit for the additive tank?Were the sensors <br /> tested after startup? <br /> The additive tank was disconnected and reconnected to the monitoring system in the same timelines as the existing fuel <br /> tanks.The sensors were verified as being read by the Veeder Root. <br /> If you have any questions,just let me know. <br /> Thank you for your time, <br /> Frederick Ernest <br /> Registered Environmental Health Specialist <br /> San Joaquin County Environmental Health <br /> 209-616-3026 <br /> fernest@sigov.org <br /> SKJ OAQ U I <br /> COUNTY <br /> GFeatnesa grows here. <br /> z <br />