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ConfirmedClean Air Actformal

Clean Air Act violation — PHX01 / PHX02 / PHX03 / PHX05

Maricopa County · AZ

Reporting by · Updated Apr 21, 2026

Air HPV status: No High Priority Violation; 3 of last 12 quarters with a Clean Air Act violation; 2 recent violation(s); Pollutant: NITROGEN OXIDES

Legal status
Confirmed
An agency has made a compliance finding.
Pollutant
NITROGEN OXIDES
Penalty
None assessed
No EPA penalty on record
Date occurred
—
Date reported
April 21, 2026
Resolved
Unresolved

1 EPA enforcement action within 1 mile of this site (PostGIS ST_DWithin, not editorial judgment).

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Sourced from EPA ECHO and primary legal filings. Legal status is tracked precisely — we never mark a case settled without a documented penalty or order. See methodology.