Section 58.01.01.301 - REQUIREMENT TO OBTAIN TIER I OPERATING PERMIT01.Prohibition. No owner or operator may operate any Tier I source without an effective Tier I operating permit. (3-28-23)02.Exceptions. No Tier I operating permit is required if the owner or operator is in compliance with Sections 311 through 315 and the Department has not taken final action on the application. (3-28-23)Idaho Admin. Code r. 58.01.01.301