Clean Air Act stationary source · ICIS-AIR AZMCA004013X138045
PHX01 / PHX02 / PHX03 / PHX05, Maricopa County, AZ: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Synthetic minor sourceEmissions classification
- Violation w/in 1 YearCurrent violation status, as filed
- 5Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
PHX01 / PHX02 / PHX03 / PHX05, at 2500 W UNION HILLS DR, Maricopa County in Maricopa County, Arizona, is an operating synthetic minor source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “Violation w/in 1 Year”. Maricopa County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | PHX01 / PHX02 / PHX03 / PHX05 |
|---|---|
| ICIS-AIR ID | AZMCA004013X138045 |
| EPA facility registry ID | 110070507328 |
| Operating status | Operating |
| Emissions classification | Synthetic minor source |
| Current violation status (ICIS-AIR high-priority violation field) | Violation w/in 1 Year |
| Address | 2500 W UNION HILLS DR, Maricopa County, AZ 85027 |
| County | Maricopa County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Data processing and hosting (NAICS 5182) |
| SIC code | 7374 |
| EPA region | 09 |
| Local air agency | Maricopa County Air Pollution Control Agency (Grantee) |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs PHX01 / PHX02 / PHX03 / PHX05 is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 5Evaluations since January 1, 2017
- 3Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| March 11, 2026 | FCE On-Site | Local | Federally-Enforceable State Operating Permit - Non Title V; New Source Performance Standards (Non-Major); State or Local rule or regulation that is not federally-enforceable |
| June 26, 2025 | PCE Off-Site | Local | Federally-Enforceable State Operating Permit - Non Title V; New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable |
| October 21, 2024 | FCE On-Site | Local | Federally-Enforceable State Operating Permit - Non Title V; New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable |
| December 4, 2018 | PCE On-Site | Local | New Source Performance Standards |
| December 4, 2018 | FCE On-Site | Local | New Source Performance Standards |
Violations
- 3Violation determinations since January 1, 2017
- 0Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| April 21, 2026 | Earliest FRV determination | Local | Federally-Enforceable State Operating Permit - Non Title V |
| August 22, 2025 | Earliest FRV determination | Local | Federally-Enforceable State Operating Permit - Non Title V |
| December 11, 2024 | Earliest FRV determination | Local | Federally-Enforceable State Operating Permit - Non Title V |
Enforcement and penalties
0 formal enforcement actions since January 1, 2017, 0 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| April 22, 2026 | Warning Letter | Local |
| August 27, 2025 | Warning Letter | Local |
| December 11, 2024 | Warning Letter | Local |
Stack tests
- 0Stack tests since January 1, 2017
- 0Recorded as failed
EPA’s stack test file holds no test at ICIS-AIR AZMCA004013X138045 since January 1, 2017.
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110070507328 there.
Nearby on the register
- Air-emissions sources in Maricopa County
- Every source record in Maricopa County, A to Z
- Air-emissions sources in Arizona
- Every source record in Arizona, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.