View all text of Subjgrp 231 [§ 49.10131 - § 49.10160]
§ 49.10135 - Classification of regions for episode plans.
The air quality control region which encompasses the Hoh Indian Reservation 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 | II |
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