b'InAtprpodenudctixio EnKnowledge of the facility is essential; operator personnel should be consulted as soon as pos-sible. Always refer to the DOT ERG for general response guidelines.Additional specific consid-erations for incidents involving storage reservoirs or bulk storage facilities are included below:UNDERGROUND STORAGE RESERVOIRS Large volumes of product may be involvedEvents may impact large areas (one half mile radius or larger) and natural gas can migrate long distancesUnderground leaks may take several weeks to repairLarge natural gas leaks may necessitate air traffic restrictions or coordination with FAA Natural gas can migrate into nearby water wells if leaks are located below the water tableSTORAGE TANKS Large volumes of product may be involvedLiquefied Natural Gas expands to 600 times its volume at ambient temperaturesPropane expands to 270 times its volumeCrude oil storage tanks may contain hydrogen sulfideEvents may impact large areas (one half mile radius or larger)Be prepared for a flash fireDo not enter an area where gas or vapor cloud may be presentblowing or notIf tank is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions In fires involving Liquefied Petroleum Gases (LPG) (UN1075); Butane, (UN1011); Butylene, (UN1012); Isobutylene, (UN1055); Propylene, (UN1077); Isobutane, (UN1969); and Propane, (UN1978), also refer to Boiling Liquid Expansive Vapor Explosion (BLEVE)SAFETY PRECAUTIONS (Page 368 in the 2016 edition of the DOT ERG)39 2022 by Pipeline Association for Public Awareness'