Sierra Club Suit Adds Pressure On Pennsylvania To Tighten NOx Controls

A Sierra Club lawsuit against EPA over its approval of Pennsylvania’s plan to curb ozone-forming nitrogen oxides (NOx) adds to pressure on the Keystone State to further limit NOx from sources it can regulate, as surrounding states weigh asking EPA to force Pennsylvania to cut NOx they say is hindering their ability to meet federal ozone limits. In its suit filed July 8 in the U.S. Court of Appeals for the 3rd Circuit, Sierra Club asks the court to scrap...