home / openregs

documents

Regulatory documents from Regulations.gov including rules, proposed rules, notices, and supporting materials.

Data license: Public Domain (U.S. Government data) · Data source: Federal Register API & Regulations.gov API

comment_end_date
A FULL UTC INSTANT, not a calendar date, despite the column name: '2026-08-29T03:59:59Z' is 11:59:59 PM EASTERN on 2026-08-28. Federal comment periods close at 11:59:59 PM Eastern, so the UTC calendar date is ONE DAY LATER than the official deadline on every end-of-day close — 444,689 of the 444,690 populated rows (measured 2026-09-06). Convert to America/New_York before presenting a deadline, and compare with julianday(comment_end_date) > julianday('now'): a plain > datetime('now') is a TEXT comparison between two different formats and keeps already-closed dockets matching for up to ~20 hours. The sibling column on open_comments.documents WAS corrected to an Eastern calendar date (queue #498); this one is unchanged and still an instant — the two databases do not agree on grain. (queue #644)
comment_start_date
A FULL UTC INSTANT, not a calendar date, despite the column name — same grain as comment_end_date on this table. Convert to America/New_York before presenting it. (queue #644)

19 rows where docket_id = "EPA-R04-OAR-2023-0227" sorted by posted_date descending

✎ View and edit SQL

This data as json, CSV (advanced)

document_type 2

  • Supporting & Related Material 18
  • Proposed Rule 1

posted_year 1

  • 2026 19

agency_id 1

  • EPA 19
id agency_id docket_id title document_type subtype posted_date ▲ posted_year posted_month comment_start_date comment_end_date last_modified fr_doc_num open_for_comment withdrawn object_id
EPA-R04-OAR-2023-0227-0005 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Louisiana SO2 Transport TSD Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:47Z   0 0 09000064b93a7bed
EPA-R04-OAR-2023-0227-0007 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Roxul Updated Model Report 08-22-2016 (Volume II: Update to Prevention of Significant Deterioration Air Quality Assessment) (FINAL - Vol II Roxul Updated Model Rpt - V1 0) Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:52Z   0 0 09000064b93a8308
EPA-R04-OAR-2023-0227-0017 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Guidance for 1-Hour SO2 Nonattainment Area SIP Submissions Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:49:11Z   0 0 09000064b943fe20
EPA-R04-OAR-2023-0227-0016 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Mississippi Silicon Modeling Report November 2014 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:49:10Z   0 0 09000064b94404bf
EPA-R04-OAR-2023-0227-0010 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Chevron PSD Modeling Report and Application 5-15-2025 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:57Z   0 0 09000064b93e613a
EPA-R04-OAR-2023-0227-0015 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Approval of Mississippi SO2 DRR Termination Request - RD Morrow 1-18-2024 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:49:08Z   0 0 09000064b943af63
EPA-R04-OAR-2023-0227-0003 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 MS 2010 SO2 iSIP Prongs 1 and 2 1-27-2022 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:43Z   0 0 090000648599ce3f
EPA-R04-OAR-2023-0227-0009 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Chevron PSD Modeling Report and Application 9-11-2025 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:55Z   0 0 09000064b93e386b
EPA-R04-OAR-2023-0227-0012 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Roxul Dispersion Modeling January-2012 (analyzed by the EPA staff March 2012) Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:49:02Z   0 0 09000064b93e5dd8
EPA-R04-OAR-2023-0227-0019 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Air Quality State Implementation Plans; Approvals and Promulgations: Mississippi; 2010 1-Hour SO2 National Ambient Air Quality Standard Transport Infrastructure Proposed Rule   2026-08-27T04:00:00Z 2026 8 2026-08-27T04:00:00Z 2026-09-18T03:59:59Z 2026-09-11T09:00:31Z 2026-17503 1 0 09000064b949f554
EPA-R04-OAR-2023-0227-0008 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Plant Barry and AKZO Nobel Submitted Modeling report to EPA on June 13, 2022 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:53Z   0 0 09000064b93e5b8d
EPA-R04-OAR-2023-0227-0013 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 MS Silicon Modeling report 08-2021 (Mississippi Silicon Air Quality Impact Assessment 08-17-2021 (MS Silicon Modeling Report Final Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:49:04Z   0 0 09000064b93e5dd9
EPA-R04-OAR-2023-0227-0001 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 SPeCS Cover Page 1-27-2022 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:27Z   0 0 090000648599cd29
EPA-R04-OAR-2023-0227-0002 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 MS 2010 SO2 iSIP Prongs 1 and 2 Transmittal Letter Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:41Z   0 0 090000648599cd2a
EPA-R04-OAR-2023-0227-0004 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Letter from PowerSouth Electric Cooperative to ADEM 11-4-2020 (Retired Unit Exemption Forms_Lowman) Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:45Z   0 0 09000064b93a82d9
EPA-R04-OAR-2023-0227-0014 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 Breakdown of SO2 Emissions from Point Sources Mississippi_Final Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:49:06Z   0 0 09000064b943c936
EPA-R04-OAR-2023-0227-0018 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 MS-65-PR_TSD Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:49:14Z   0 0 09000064b946b011
EPA-R04-OAR-2023-0227-0006 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 MDEQ DRR Termination Request for RD Morrow Plant (Final)_05-17-2023) (Contains RD Morrow retired unit exemption form) Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:49Z   0 0 09000064b93a8076
EPA-R04-OAR-2023-0227-0011 EPA Air Plan Approval; Mississippi; 2010 1-Hour SO2 NAAQS Transport Infrastructure EPA-R04-OAR-2023-0227 TN DRR Termination Request_TVA Allen and Johnsonville_2023 Supporting & Related Material   2026-08-27T04:00:00Z 2026 8     2026-08-27T16:48:59Z   0 0 09000064b93e5dd7

Advanced export

JSON shape: default, array, newline-delimited, object

CSV options:

CREATE TABLE documents (
    id TEXT PRIMARY KEY,
    agency_id TEXT,
    docket_id TEXT REFERENCES dockets(id),
    title TEXT,
    document_type TEXT,
    subtype TEXT,
    posted_date TEXT,
    posted_year INTEGER,
    posted_month INTEGER,
    comment_start_date TEXT,
    comment_end_date TEXT,
    last_modified TEXT,
    fr_doc_num TEXT,
    open_for_comment INTEGER,
    withdrawn INTEGER,
    object_id TEXT
);
CREATE INDEX idx_docs_agency ON documents(agency_id);
CREATE INDEX idx_docs_docket ON documents(docket_id);
CREATE INDEX idx_docs_date ON documents(posted_date);
CREATE INDEX idx_docs_year ON documents(posted_year);
CREATE INDEX idx_docs_type ON documents(document_type);
CREATE INDEX idx_docs_frnum ON documents(fr_doc_num);
CREATE INDEX idx_docs_comment_end ON documents(comment_end_date) WHERE comment_end_date IS NOT NULL AND withdrawn = 0;
Powered by Datasette · Queries took 2.01ms · Data license: Public Domain (U.S. Government data) · Data source: Federal Register API & Regulations.gov API · Privacy