---
kind: "section"
citation: "40 C.F.R. § 81.15"
title: "40"
number: "81.15"
heading: "Metropolitan Philadelphia Interstate Air Quality Control Region (Pennsylvania-New Jersey-Delaware)."
url: "https://uscodex.org/cfr/40/81.15"
---

# §81.15. Metropolitan Philadelphia Interstate Air Quality Control Region (Pennsylvania-New Jersey-Delaware).


The Metropolitan Philadelphia Interstate Air Quality Control Region (Pennsylvania-New Jersey-Delaware) consists of the territorial area encompassed by the boundaries of the following jurisdictions (including the territorial area of all municipalities (as defined in section 302(f) of the Clean Air Act, [42 U.S.C. 1857h(f)](/usc/42/1857h.md?p=f)) geographically located within the outermost boundaries of the area so delimited):


## Notes

### Authority

Authority: 42 U.S.C. 7401, et seq.

### Source

Source: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.