Regulations last checked for updates: May 19, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
All TitlesTitle 40Chapter IPart 49Subpart M - Subpart M—Implementation Plans for Tribes—Region X
View all text of Subpart M [§ 49.9861 - § 49.17810]
§ 49.10375 - Classification of regions for episode plans.

The air quality control region which encompasses the Muckleshoot Reservation is classified as follows for purposes of episode plans:

Pollutant Classification
Carbon monoxideI
Nitrogen dioxideIII
OzoneI
Particulate matter (PM10)I
Sulfur oxidesIA
authority: 42 U.S.C. 7401,
source: 63 FR 7271, Feb. 12, 1998, unless otherwise noted.
cite as: 40 CFR 49.10375
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