Public Hearing: Proposed Visibility State Implementation Plan

Date and Time:
Wednesday, December 29, 2021
6:00 pm


, Delaware

The Department of Natural Resources and Environmental Control (DNREC) will hold a public hearing on a proposed Visibility State Implementation Plan (Docket #2021-R-A-0019). Public comment period closed.

Connection Information

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Event Number: 2349 508 0655
Password: RegHazeSIP
Dial-in Number: 1-408-418-9388
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The federal Clean Air Act mandates protection of visibility in Class I federal areas, such as national parks, forests and wilderness areas. Under the 1999 Regional Haze Rule, states are required to develop a series of State Implementation Plans (SIPs) to reduce visibility impairment; with the express intent that, by 2064 the visibility in the Class I areas will be returned to natural conditions. States are required to develop a series of SIPs to address visibility impairment in Class I areas and make reasonable progress toward achieving natural visibility conditions. This proposed SIP covers the 2nd implementation period of 2018 – 2028.

The proposed SIP may be inspected online starting Dec. 1, 2021 in the Delaware Register of Regulations or in person, by appointment only, by contacting Renae Held at 302-739-9402 or by email at

The Department will accept public comment through the close of business on Jan. 13, 2022. Comments will be accepted in written form via email to, using the online form at, or by U.S. mail to the address below.

Docket #2021-R-A-0019

Submit A Comment

Public Hearing Officer

Lisa A. Vest
DNREC Office of the Secretary
89 Kings Highway
Dover, DE 19901

Transcript, Hearing Officer’s Report and Secretary’s Order

Public Hearing Transcript

Hearing Officer’s Report
– Appendix A: Proposed Revised SIP Regarding Regional Haze
– Appendix B: Technical Response Memorandum

Secretary’s Order No. 2022-A-0013 — Approving Final Revisions to Delaware’s State Implementation Plan (“SIP”) Addressing Regional Haze (Effective Date: Aug. 11, 2022)

DNREC Exhibits

Exhibit 1: Environmental Protection Agency’s Regional Haze Rule. “Regional haze program requirements.” 40 Code of Federal Regulations § 51.308. July 1, 2019. Pages 316-320.

Exhibit 2: Register Notice for the proposed revision to “Delaware’s Visibility State Implementation Plan”, published in Delaware Register of Regulations on December 1, 2021.

Exhibit 3: Affidavit and legal notice in the November 21, 2021 Delaware State News.

Exhibit 4: Affidavit and legal notice in the November 21, 2021 News Journal.

Exhibit 5: Hearing notice on the State of Delaware Public Meeting Calendar, December 13, 2021.

Exhibit 6: Legal notice as posted on the website for DNREC Public Notices, dated November 21, 2021.

Exhibit 7: Proposed Visibility State Implementation Plan (with Appendices)

Exhibit 8: DNREC Public Hearing Presentation.

Public Comments

Sierra Club, National Parks Conservation Association, Delaware Audubon Society, and Earthjustice (1/13/22)

Mike Gordon, EPA (1/13/22)

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