Tier

Tier means the combination of required response resources and the times within which the resources must arrive on scene. Appendix B of this part, especially Tables 5 and 6, provide specific guidance on calculating the response resources required by each tier. Sections 155.1050, 155.1135, 155.1230(d), and 155.2230(d) set forth the required times within which the response resources must arrive on scene. Tiers are applied in three categories:
(1) Higher volume port areas;
(2) The Great Lakes; and
(3) All other operating environments, including rivers and canals, inland, nearshore, and offshore areas.

Source

33 CFR § 155.1020


Scoping language

Except as otherwise defined in this section, the definitions in 155.110 apply to this subpart and subparts F and G of this part. For the purposes of this subpart only, the term:

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