Regulation · Object 360

Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard

Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard: a regulation cited by 2 reports across 1 vertical, first seen 2026-09-13.

As of 2026-09-13 · 3 links

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Graph footprint

Reports reached 2 Verticals 1 Provenance edges 3

First seen 2026-09-13 · primary vertical business-operations.

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hot

4 direct changes and 1957 nearby in the last 30 days — hot

Direct changes (4)

  • 2026-09-13 Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard: daysUntilEffective 27 → 26
  • 2026-09-12 Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard: daysUntilEffective 28 → 27
  • 2026-09-11 Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard: daysUntilEffective 29 → 28
  • 2026-09-10 New regulation: Air Plan Approvals; Indiana; Prong 4 (Visibility) for the 2015 Ozone National Ambient Air Quality Standard

Nearby in the vertical

  • 2026-09-13 Modification of Class E Airspace, Omak Airport, Omak, WA: daysUntilEffective -9 → -10
  • 2026-09-13 Revocation of Obsolete Rules Regarding Infant Bouncer Seats and Stationary Activity Centers: daysUntilEffective 9 → 8
  • 2026-09-13 Removal of Obsolete or Unnecessary Requirements: daysUntilEffective 9 → 8
  • 2026-09-13 FLSA Claims and Compliance: daysUntilEffective 17 → 16
  • 2026-09-13 Amendment of Class D and Class E Airspace; Chicago/Rockford, IL: daysUntilEffective 47 → 46
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Provenance trail

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  • Reaches 2 reports across 1 vertical in the ontology graph /explore/
  • First observed 2026-09-13 /changes/