40 C.F.R. § 49.9985 — Classification of regions for episode plans.
§ 49.9985 Classification of regions for episode plans. The air quality control region which encompasses the Reservation of the Confederated Tribes of the Coos, Lower Umpqua and Siuslaw Indians is classified as follows for purposes of episode plans: Pollutant Classification Carbon monoxide III Nitrogen dioxide III Ozone III Particulate matter (PM10) II Sulfur oxides III