The Environmental Protection Agency is reconsidering whether facilities that recycle plastic chemically should be held to the same strict air pollution standards as incinerators. The possible change is alarming environmental advocates who say it would lead to more dangerous pollution spewing into communities, with fewer or no checks at the federal level. The plastics industry disputes that, saying it would clear up confusion while still controlling emissions. The world is pumping millions of tons of plastic pollution into the environment every year. While dozens of countries and many environmental groups have urged caps on production, industry and several big oil-producing countries have resisted, arguing instead for improvements in reuse and recycling. Chemical recycling uses heat or chemicals to break down plastics. The main method, a process known as pyrolysis, has long been regulated as incineration by the Clean Air Act. The EPA limits emissions from incinerators of nine air pollutants, including toxic particulates, heavy metals and dioxins. The agency says a potential new rule could instead recognize pyrolysis as manufacturing. The American Chemistry Council, an …