---
kind: "section"
citation: "40 C.F.R. § 52.420"
title: "40"
number: "52.420"
heading: "Identification of plan."
url: "https://uscodex.org/cfr/40/52.420"
---

# §52.420. Identification of plan.

- (a) **Purpose and scope.** This section sets forth the applicable State implementation plan for Delaware under section 110 of the Clean Air Act, 42 U.S.C. [7410](/usc/42/7410.md), and [40](/usc/42/40.md) CFR [part 51](/cfr/40/part51.md) to meet national ambient air quality standards.
- (b) **Incorporation by reference.**
  - (1) Material listed in paragraphs [(c)](#c) and [(d)](#d) of this section with an EPA approval date prior to May 25, 2018, was approved for incorporation by reference by the Director of the Federal Register in accordance with 5 U.S.C. [552(a)](/usc/5/552.md?p=a) and [1](/usc/5/1.md) CFR [part 51](/cfr/40/part51.md). Entries in paragraphs (c) and [(d)](#d) of this section with the EPA approval dates after May 25, 2018 for the State of Delaware have been approved by EPA for inclusion in the State implementation plan and for incorporation by reference into the plan as it is contained in this section, and will be considered by the Director of the Federal Register for approval in the next update to the SIP compilation.
  - (2) EPA Region III certifies that the materials provided by EPA at the addresses in [paragraph (b)(3)](#b-3) of this section are an exact duplicate of the officially promulgated State rules/regulations which have been approved as part of the State implementation plan as of the dates referenced in [paragraph (b)(1)](#b-1) of this section.
  - (3) Copies of the materials incorporated by reference into the State implementation plan may be inspected at the Environmental Protection Agency, Region III, 1650 Arch Street, Philadelphia, Pennsylvania 19103. To obtain the material, please call the Regional Office at (215) 814-3376. You may also inspect the material with an EPA approval date prior to May 25, 2018 for the State of Delaware at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.
- (c) **EPA approved regulations.**
- (d) **EPA-approved State source-specific requirements.**
- (e) **EPA-approved non-regulatory and quasi-regulatory material.**

## Notes

### Amendments

[63 FR 67410, Dec. 7, 1998]

### Authority

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

### Amendments

[40 FR 5521, Feb. 6, 1975]

### Amendments

[63 FR 67410, Dec. 7, 1998]