Question # 497

497. Some toxic chemicals released into the environment react to form other toxic chemicals, for example, phosphorus (a listed toxic chemical) oxidizes in air to form phosphorus pentoxide (not a listed toxic chemical). Which should be reported, the transformed toxic chemical or the source toxic chemical? How would the report(s) be prepared if both the source and resulting toxic chemical are listed?
Report releases of the listed toxic chemical. The facility is not responsible for reporting a toxic chemical resulting from a conversion in the environment (e.g., outside of a facility air stack).