Pennsylvania will no longer require gasoline stations to install costly vapor-recovery systems, a fixture at fuel pumps for two decades.
The systems are no longer necessary because modern vehicles are equipped to capture emissions from fuel tanks, the state Department of Environmental Protection said Wednesday. Its announcement followed a directive in May from the U.S. Environmental Protection Agency that determined the systems were redundant.
Several other states have also moved to relax mandates to install the systems, which capture fumes released during refueling. Gasoline vapors, if allowed to escape, can contribute significantly to ground-level ozone.