Storm Water Phase II Regulations: 40 CFR 122.31 | Region 10 | US EPA

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Storm Water Phase II Regulations: 40 CFR 122.31

This page is a copy of a portion of the Phase II regulations, and is current as of September 26, 2002.


122.31 As a Tribe, what is my role under the NPDES storm water program?

As a Tribe you may:

(a) Be authorized to operate the NPDES program including the storm water program, after EPA determines that
you are eligible for treatment in the same manner as a State under 123.31 through 123.34 of this chapter. (If
you do not have an authorized NPDES program, EPA implements the program for discharges on your reservation as well as other Indian country, generally.);

(b) Be classified as an owner of a regulated small MS4 [municipal separate storm sewer system], as defined in 122.32. (Designation of your Tribe as an owner of a small MS4 for purposes of this part is an approach that is consistent with EPA's 1984 Indian Policy of operating on a government-to-government basis with EPA looking to Tribes as the lead governmental
authorities to address environmental issues on their reservations as appropriate. If you operate a separate storm sewer system that meets the definition of a regulated small MS4, you are subject to the requirements under 122.33 through 122.35. If you are not designated as a regulated small MS4, you may ask EPA to designate you as such for the purposes of this part.); or

(c) Be a discharger of storm water associated with industrial activity or small construction activity under 122.26(b)(14) or (b)(15), in which case you must meet the applicable requirements. Within Indian country, the NPDES permitting authority is generally EPA, unless you are authorized to administer the NPDES program.

[64 FR 68842, Dec. 8, 1999]

The Storm Water Phase II regulations, were published in the Federal Register on December 8, 1999:

Section 1 (82 pages, .pdf format)

Section 2: Appendices (50 pages, .pdf format)

Entire Rule: Pages 68721-68851

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