Portland Clean Air is releasing today a new report calling into question the validity of Oregon’s air permitting system. The study, A Comparison of Toxic Chemical Use by Permit Type in Multnomah and Washington County, looks at toxic chemicals used by manufacturers in Multnomah and Washington Counties that are reported to the State Fire Marshall and compares them to those reported to air regulators. The study demonstrates that up to 95% of hazardous chemical usage is by industries that do not report their hazardous air pollution to a regulatory authority.