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e . VEEDER- RO T <br /> July 20 , 2023 <br /> Tom Henderson <br /> UST Leak Prevention Unit and Tank Tester Licensing Manager <br /> State Water Resources Control Board <br /> Sacramento , CA <br /> Tom , <br /> Per our discussion , Veeder- Root' s Single- Point and Dual - Point Hydrostatic Sensors <br /> ( 794380-301 and 794380 -303 ) , used to monitor brine levels in double walled fiberglass <br /> tanks , are compatible for single- use liquid exposure to Lubrizol's additives ULTRAZOL <br /> GA9058 and LUBRIZOL MF9147K . If these sensors were exposed to these fuels , they <br /> would have to be removed and replaced . Veeder- Root's sensor compatibility matrix in <br /> the Sensor Application Guide will be updated to indicate this information . <br /> Please let me know if I can answer any other questions . <br /> Regards , <br /> Dave <br /> David S . Emmington <br /> Environmental Product manager <br /> The Veeder- Root Company <br />