EPA re-evaluates pyrolysis pollution rules. Accepting public comments on rule change. Industry advocates say pyrolysis preserves materials. Advocates claim success with Trump administration. NRDC warns of deregulation and no federal standards. Moms Clean Air Force urges strict regulations. Georgia organizer Kiya Stanford testifies against proposal. Six pyrolysis plants in Ohio and Texas. 90% of plastic waste unrecycled. Concerns over facility growth and oversight