Clean Air Act stationary source · ICIS-AIR AZMCA004013X001879
NORTHWEST REGIONAL LANDFILL, Maricopa County, AZ: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 23Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
NORTHWEST REGIONAL LANDFILL, at 19401 W DEER VALLEY RD, Maricopa County in Maricopa County, Arizona, is an operating major 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 “No Violation Identified”. 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 | NORTHWEST REGIONAL LANDFILL |
|---|---|
| ICIS-AIR ID | AZMCA004013X001879 |
| EPA facility registry ID | 110035777228 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 19401 W DEER VALLEY RD, Maricopa County, AZ 85388 |
| County | Maricopa County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Waste management and remediation (NAICS 5622) |
| SIC code | 4953 |
| 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 NORTHWEST REGIONAL LANDFILL 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
- 23Evaluations since January 1, 2017
- 8Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| May 21, 2026 | PCE Off-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Risk Management Program; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 8, 2026 | PCE On-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| February 13, 2026 | PCE Off-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Risk Management Program; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 31, 2025 | PCE Off-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Risk Management Program; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| July 14, 2025 | FCE On-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Risk Management Program; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 8, 2025 | PCE Off-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Risk Management Program; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 17, 2025 | PCE On-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Risk Management Program; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| October 21, 2024 | PCE Off-Site | Local | New Source Performance Standards; Title V Permits |
| September 25, 2024 | PCE On-Site | Local | New Source Performance Standards; Title V Permits |
| July 10, 2024 | PCE Off-Site | Local | New Source Performance Standards; Title V Permits |
| June 5, 2024 | FCE On-Site | Local | Stratospheric Ozone Protection; Federally-Enforceable State Operating Permit - Non Title V; 40 CFR Part 63 Area Sources; MACT Standards (40 CFR Part 63); National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; State or Local rule or regulation that is not federally-enforceable; Risk Management Program; Part 62 - State and Federal Plans for Control of Designated Pollutants from Existing Facilities; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 7, 2024 | PCE On-Site | U.S. EPA | Operating Permits |
| July 8, 2022 | PCE Off-Site | U.S. EPA | Operating Permits |
| April 5, 2022 | FCE On-Site | U.S. EPA | Title V Permits |
| February 12, 2021 | FCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 20, 2020 | PCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 20, 2020 | FCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 2, 2019 | PCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| May 2, 2019 | FCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 23, 2018 | PCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| April 23, 2018 | FCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 17, 2017 | PCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| January 17, 2017 | FCE On-Site | Local | MACT Standards (40 CFR Part 63); New Source Performance Standards; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
Violations
- 0Violation 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.
EPA’s violation history file holds no violation for ICIS-AIR AZMCA004013X001879 since January 1, 2017.
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
EPA’s informal action file holds no notice or warning for ICIS-AIR AZMCA004013X001879 since January 1, 2017.
Stack tests
- 9Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| November 14, 2025 | Pass | Local |
| November 13, 2024 | Pass | Local |
| February 22, 2024 | Pass | Local |
| September 21, 2023 | Pass | Local |
| September 9, 2022 | Pending | Local |
| June 8, 2022 | Pass | Local |
| June 8, 2021 | Pass | Local |
| April 19, 2020 | Pass | Local |
| September 30, 2019 | Pass | Local |
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 110035777228 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.