(August 23, 2021, 2:05 PM EDT) -- WASHINGTON, D.C. — The U.S. Environmental Protection Agency has illegally delayed issuing a response for nearly seven years to a nonprofit organization’s request to classify discarded polyvinyl chloride (PVC), a commonly used plastic, as a hazardous waste under the Resource Conservation and Recovery Act (RCRA), a nonprofit organization argues to a federal appeals court in an Aug. 19 complaint....