As I read it, the data about emissions specifically is self-reported by facilities: > We reached out to each of the top 200 facilities (ranked by the level of

As I read it, the data about emissions specifically is self-reported by facilities: > We reached out to each of the top 200 facilities (ranked by the level of nearby cancer risk) to ask them if their emissions reporting was accurate — and if not, whether they would resubmit 2014-18 data to the EPA. Of the 109 companies that responded to us, 71% confirmed that their reported emissions were correct, and 29% noted errors, which we asked them to correct.