EPA Air · inspections by state and year
Air-emissions inspections in Washington, 2026
- 625Inspections
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Every inspection below was recorded against a source in Washington during 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Washington, 2026
- King County 266
- Pierce County 123
- Snohomish County 110
- Kitsap County 24
- Lewis County 18
- Clark County 18
- Cowlitz County 17
- Skagit County 13
- Whatcom County 11
- Benton County 4
- Spokane County 4
- Grays Harbor County 4
- Clallam County 3
Washington, other years
Air-emissions inspections recorded in Washington, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-09-01 | US OIL & REFINING CO | TACOMA, Pierce, WA | PCE On-Site | U.S. EPA |
| 2026-08-31 | WESTROCK LONGVIEW LLC — high-priority violation on file | LONGVIEW, Cowlitz, WA | FCE On-Site | State |
| 2026-08-26 | ASH GROVE CEMENT COMPANY | SEATTLE, King, WA | PCE On-Site | U.S. EPA |
| 2026-08-25 | SIERRA PACIFIC, INDUSTRIES | CENTRALIA, Lewis, WA | PCE Off-Site | Local |
| 2026-08-19 | PUGET SOUND ENERGY-FREDONIA | MOUNT VERNON, Skagit, WA | FCE Off-Site | Local |
| 2026-08-19 | PUGET SOUND ENERGY-FREDONIA | MOUNT VERNON, Skagit, WA | PCE On-Site | Local |
| 2026-08-19 | PUGET SOUND ENERGY-FREDONIA | MOUNT VERNON, Skagit, WA | PCE On-Site | Local |
| 2026-08-19 | PHILLIPS 66 | FERNDALE, Whatcom, WA | PCE On-Site | Local |
| 2026-08-19 | PHILLIPS 66 | FERNDALE, Whatcom, WA | PCE On-Site | Local |
| 2026-08-06 | HM NORTHWEST CEMENT COMPANY | BELLINGHAM, Whatcom, WA | PCE On-Site | Local |
| 2026-07-30 | UNIVERSITY OF WASHINGTON DBA EHNS | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-30 | UNIVERSITY OF WASHINGTON DBA EHNS | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-30 | BOEING DEVELOPMENTAL CENTER | TUKWILA, King, WA | PCE Off-Site | Local |
| 2026-07-29 | JANICKI INDUSTRIES, INC. | SEDRO-WOOLLEY, Skagit, WA | PCE On-Site | Local |
| 2026-07-29 | PUGET SOUND ENERGY - WHITEHORN | BLAINE, Whatcom, WA | FCE Off-Site | Local |
| 2026-07-29 | GIRARD RESOURCES & RECYCLING LLC | COVINGTON, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-28 | HOLLYFRONTIER PUGET SOUND REFINERY | ANACORTES, Skagit, WA | PCE On-Site | U.S. EPA |
| 2026-07-28 | PUGET SOUND ENERGY - WHITEHORN | BLAINE, Whatcom, WA | PCE On-Site | Local |
| 2026-07-28 | PUGET SOUND ENERGY - SUMAS | SUMAS, Whatcom, WA | PCE On-Site | Local |
| 2026-07-28 | PUGET SOUND ENERGY - SUMAS | SUMAS, Whatcom, WA | FCE Off-Site | Local |
| 2026-07-28 | SIERRA PACIFIC INDUSTRIES - COGENERATION — high-priority violation on file | ABERDEEN, Grays Harbor, WA | FCE On-Site | Local |
| 2026-07-28 | SIERRA PACIFIC INDUSTRIES - LUMBER MILL | ABERDEEN, Grays Harbor, WA | FCE On-Site | Local |
| 2026-07-28 | BURLINGTON ENVIRONMENTAL, LLC | KENT, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-27 | CARLISLE CONSTRUCTION MATERIALS INCORPORATED | PUYALLUP, Pierce, WA | PCE Off-Site | Local |
| 2026-07-27 | UNIVERSITY OF WASHINGTON DBA EHNS | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-27 | TIDEWATER BARGE LINES, INC. | VANCOUVER, Clark, WA | FCE On-Site | Local |
| 2026-07-27 | TIDEWATER BARGE LINES, INC. | VANCOUVER, Clark, WA | PCE Off-Site | Local |
| 2026-07-23 | NORTHWEST PIPELINE GP SUMNER | SUMNER, Pierce, WA | FCE On-Site | Local |
| 2026-07-23 | NORTHWEST PIPELINE GP SUMNER | SUMNER, Pierce, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-22 | AEROJET ROCKETDYNE, INC. | REDMOND, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-21 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-21 | MOREL INDUSTRIES | ARLINGTON, Snohomish, WA | PCE Off-Site | Local |
| 2026-07-21 | CENTRIO (WESTERN) | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-21 | CENTRIO (WESTERN) | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-21 | EDMONDS, CITY OF, WASTEWATER TREATMENT PLANT | EDMONDS, Snohomish, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-16 | HM PACIFIC NORTHWEST, INC. DBA CADMAN MATERIAL INC | KENMORE, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-16 | US NAVY PUGET SOUND NAVAL SHIPYARD PSNS | BREMERTON, Kitsap, WA | PCE Off-Site | Local |
| 2026-07-16 | US NAVY PUGET SOUND NAVAL SHIPYARD PSNS | BREMERTON, Kitsap, WA | PCE Off-Site | Local |
| 2026-07-16 | GEORGIA-PACIFIC GYPSUM LLC | TACOMA, Pierce, WA | PCE Off-Site | Local |
| 2026-07-16 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-07-15 | BOEING COMMERCIAL AIRPLANE RENTON | RENTON, King, WA | PCE Off-Site | Local |
| 2026-07-15 | PACIFIC PROPELLER INTERNATIONAL LLC | KENT, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-15 | BOEING COMMERCIAL AIRPLANE SEATTLE | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-15 | JOINT BASE LEWIS-MCCHORD | FORT LEWIS, Pierce, WA | PCE Off-Site | Local |
| 2026-07-15 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-07-14 | PORT TOWNSEND PAPER CORPORATION — high-priority violation on file | PORT TOWNSEND, Jefferson, WA | PCE On-Site | State |
| 2026-07-14 | HM PACIFIC NORTHWEST, INC. DBA CADMAN MATERIAL INC | KENMORE, King, WA | PCE Off-Site | Local |
| 2026-07-13 | ASH GROVE CEMENT COMPANY | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-10 | MCCALLUM CRUSHING, LLC | BREMERTON, Kitsap, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-09 | HM NORTHWEST CEMENT COMPANY | BELLINGHAM, Whatcom, WA | PCE Off-Site | Local |
| 2026-07-09 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-09 | BOEING SPACE CENTER | KENT, King, WA | PCE Off-Site | Local |
| 2026-07-09 | BOEING DEVELOPMENTAL CENTER | TUKWILA, King, WA | PCE Off-Site | Local |
| 2026-07-08 | NUCOR STEEL SEATTLE INC | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-08 | UNIVERSITY OF WASHINGTON DBA EHNS | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-08 | KING CO SOLID WASTE OP SEC CEDAR HILLS | MAPLE VALLEY, King, WA | FCE On-Site | Local |
| 2026-07-08 | KING CO SOLID WASTE OP SEC CEDAR HILLS | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-08 | BOEING COMMERCIAL AIRPLANE SEATTLE | SEATTLE, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-08 | BOEING COMMERCIAL AIRPLANE SEATTLE | SEATTLE, King, WA | FCE On-Site | Local |
| 2026-07-08 | KING COUNTY RNG PROCESSING FACILITY | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-07-08 | US OIL & REFINING CO | TACOMA, Pierce, WA | PCE Off-Site | Local |
| 2026-07-08 | US NAVY NAVAL STATION EVERETT | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-07-07 | ASH GROVE CEMENT COMPANY | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-06 | ALON ASPHALT USA | SHORELINE, Snohomish, WA | PCE Off-Site | Local |
| 2026-07-06 | ALON ASPHALT USA | SHORELINE, Snohomish, WA | PCE Off-Site | Local |
| 2026-07-02 | UNIVERSITY OF WASHINGTON DBA EHNS | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-02 | AGC BIOLOGICS INC. | BOTHELL, Snohomish, WA | PCE Off-Site | Local |
| 2026-07-01 | NORTHWEST PIPELINE CORP SUMAS | SUMAS, Whatcom, WA | FCE Off-Site | Local |
| 2026-07-01 | ASH GROVE CEMENT COMPANY | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-07-01 | AEROJET ROCKETDYNE, INC. | REDMOND, King, WA | PCE Off-Site | Local |
| 2026-07-01 | MULTICARE GOOD SAMARITAN HOSPITAL | PUYALLUP, Pierce, WA | PCE Off-Site | Local |
| 2026-06-30 | NORTHWEST PIPELINE LLC- MOUNT VERNON | MOUNT VERNON, Skagit, WA | FCE Off-Site | Local |
| 2026-06-30 | GLACIER NW, INC. DBA CALPORTLAND | MAURY ISLAND, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-24 | WESTERN WASHINGTON UNIVERSITY | BELLINGHAM, Whatcom, WA | PCE On-Site | Local |
| 2026-06-24 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-24 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-24 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-24 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-24 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-24 | CEDAR GROVE COMPOST CO | MAPLE VALLEY, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-24 | KING CO NTRL RES WASTEWATER TREATMENT BRIGHTWATER | WOODINVILLE, Snohomish, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-23 | TESORO REFINING AND MARKETING COMPANY | ANACORTES, Skagit, WA | PCE On-Site | Local |
| 2026-06-23 | INTERNATIONAL PAPER | LACEY, Thurston, WA | FCE On-Site | Local |
| 2026-06-22 | NAVAL BASE KITSAP AT BREMERTON | BREMERTON, Kitsap, WA | PCE Off-Site | Local |
| 2026-06-18 | CENTRIO (WESTERN) | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-06-18 | SHAMROCK PAVING INC | SPOKANE, Spokane, WA | FCE On-Site | Local |
| 2026-06-17 | BOEING COMMERCIAL AIRPLANE RENTON | RENTON, King, WA | PCE Off-Site | Local |
| 2026-06-17 | BOEING COMMERCIAL AIRPLANE SEATTLE | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-06-17 | BOEING COMMERCIAL AIRPLANE SEATTLE | SEATTLE, King, WA | PCE Off-Site | Local |
| 2026-06-17 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-06-17 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-06-17 | HOLY FAMILY MEDICAL CENTER (HOSPITAL) | SPOKANE, Spokane, WA | FCE On-Site | Local |
| 2026-06-16 | ASH GROVE CEMENT COMPANY | SEATTLE, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-16 | SHELL DISTRIBUTION TERMINAL | SEATTLE, King, WA | PCE On-Site Record/Report Review | Local |
| 2026-06-16 | SHELL DISTRIBUTION TERMINAL | SEATTLE, King, WA | FCE On-Site | Local |
| 2026-06-16 | US NAVY PUGET SOUND NAVAL SHIPYARD PSNS | BREMERTON, Kitsap, WA | PCE Off-Site | Local |
| 2026-06-16 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-06-16 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-06-16 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
| 2026-06-16 | BOEING COMMERCIAL AIRPLANE GROUP - EVERETT — high-priority violation on file | EVERETT, Snohomish, WA | PCE Off-Site | Local |
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Dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.