EPA Air · stack tests by state and year
Air-emissions stack tests in Maine, 2025
- 131Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Maine during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Maine, 2025
- Somerset County 23
- Cumberland County 18
- Penobscot County 16
- Oxford County 15
- Washington County 14
- Androscoggin County 10
- Waldo County 7
- Hancock County 7
- Aroostook County 6
- York County 5
- Franklin County 3
Maine, other years
Air-emissions stack tests recorded in Maine, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-30 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-12-22 | EASTERN MAINE MEDICAL CENTER | BANGOR, Penobscot, ME | Pass | State |
| 2025-12-16 | NE RENEWABLE POWER WEST ENFIELD, LLC | WEST ENFIELD, Penobscot, ME | Pass | State |
| 2025-12-15 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2025-12-15 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2025-12-15 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2025-12-12 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-12-10 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-12-09 | CITY OF AUGUSTA - HATCH HILL LANDFILL | AUGUSTA, Kennebec, ME | Pass | State |
| 2025-12-09 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-12-09 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-11-25 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-11-20 | GLOBAL COMPANIES LLC | SOUTH PORTLAND, Cumberland, ME | Pass | State |
| 2025-11-19 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-11-17 | PORTSMOUTH NAVAL SHIPYARD | KITTERY, York, ME | Pass | State |
| 2025-11-17 | PORTSMOUTH NAVAL SHIPYARD | KITTERY, York, ME | Pass | State |
| 2025-11-14 | SPRAGUE OPERATING RESOURCES LLC | SEARSPORT, Waldo, ME | Pass | State |
| 2025-11-12 | MID-MAINE WASTE ACTION CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-11-11 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-11-04 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-10-29 | THE JACKSON LABORATORY | BAR HARBOR, Hancock, ME | Pass | State |
| 2025-10-27 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-10-23 | MID-MAINE WASTE ACTION CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-10-23 | SODERBERG COMPANY, INC. | CARIBOU, Aroostook, ME | Pass | State |
| 2025-10-23 | BACKYARD FARMS, LLC | MADISON, Somerset, ME | Pass | State |
| 2025-10-22 | MID-MAINE WASTE ACTION CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-10-15 | ND PAPER INC. | RUMFORD, Oxford, ME | Pending | State |
| 2025-10-14 | ROBBINS LUMBER, INC. | SEARSMONT, Waldo, ME | Pass | State |
| 2025-10-08 | SPRAGUE OPERATING RESOURCES LLC | SEARSPORT, Waldo, ME | Pass | State |
| 2025-10-08 | EUROVIA ATLANTIC COAST LLC D/B/A COPIAM ASPHALT SOLUTIONS | HERMON, Penobscot, ME | Pass | State |
| 2025-10-07 | HUBER ENGINEERED WOODS LLC | EASTON, Aroostook, ME | Pass | State |
| 2025-10-07 | SPRAGUE OPERATING RESOURCES LLC | SEARSPORT, Waldo, ME | Pass | State |
| 2025-10-07 | EUROVIA ATLANTIC COAST LLC D/B/A COPIAM ASPHALT SOLUTIONS | HERMON, Penobscot, ME | Pass | State |
| 2025-10-06 | DOWN EAST EMULSIONS, LIMITED LIABILITY COMPANY | BANGOR, Penobscot, ME | Pass | State |
| 2025-10-03 | ECO MAINE | PORTLAND, Cumberland, ME | Pass | State |
| 2025-10-02 | J.R. VINAGRO CORPORATION | GREENVILLE, Piscataquis, ME | Pass | State |
| 2025-10-02 | J.R. VINAGRO COROPORATION | GREENVILLE, Piscataquis, ME | Pass | State |
| 2025-09-30 | ECO MAINE | PORTLAND, Cumberland, ME | Pass | State |
| 2025-09-23 | CITY OF BATH LANDFILL | BATH, Sagadahoc, ME | Pass | State |
| 2025-09-23 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-09-18 | FPL ENERGY WYMAN LLC | YARMOUTH, Cumberland, ME | Pass | State |
| 2025-09-18 | SPRAGUE OPERATING RESOURCES LLC | SOUTH PORTLAND, Cumberland, ME | Pass | State |
| 2025-09-16 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2025-09-16 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2025-09-05 | PIONEER PLASTICS CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-09-05 | NAVAL SUPPORT ACTIVITY (NSA) CUTLER | CUTLER, Washington, ME | Pass | State |
| 2025-09-04 | ECO MAINE | PORTLAND, Cumberland, ME | Pass | State |
| 2025-09-04 | NAVAL SUPPORT ACTIVITY (NSA) CUTLER | CUTLER, Washington, ME | Pass | State |
| 2025-09-04 | NAVAL SUPPORT ACTIVITY (NSA) CUTLER | CUTLER, Washington, ME | Pass | State |
| 2025-09-03 | ECO MAINE | PORTLAND, Cumberland, ME | Pass | State |
| 2025-09-03 | NAVAL SUPPORT ACTIVITY (NSA) CUTLER | CUTLER, Washington, ME | Pass | State |
| 2025-08-28 | DANISCO USA INC. | ROCKLAND, Knox, ME | Pass | State |
| 2025-08-28 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-08-26 | T&D WOOD ENERGY LLC — high-priority violation on file | SANFORD, York, ME | Pass | State |
| 2025-08-20 | LOUISIANA-PACIFIC CORPORATION | NEW LIMERICK, Aroostook, ME | Pass | State |
| 2025-08-20 | LIGNETICS OF MAINE, LLC | STRONG, Franklin, ME | Fail | State |
| 2025-08-14 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-08-12 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-08-07 | MAINE WOODS PELLET COMPANY, LLC | ATHENS, Somerset, ME | Pass | State |
| 2025-08-05 | PIONEER PLASTICS CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-07-31 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-07-30 | MID-MAINE WASTE ACTION CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-07-30 | MID-MAINE WASTE ACTION CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-07-30 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-07-29 | MID-MAINE WASTE ACTION CORPORATION | AUBURN, Androscoggin, ME | Pass | State |
| 2025-07-25 | BUCKSPORT GENERATION LLC | BUCKSPORT, Hancock, ME | Pass | State |
| 2025-07-24 | WESTBROOK ENERGY CENTER, LLC | WESTBROOK, Cumberland, ME | Pass | State |
| 2025-07-23 | WESTBROOK ENERGY CENTER, LLC | WESTBROOK, Cumberland, ME | Pass | State |
| 2025-07-11 | RUMFORD POWER LLC | RUMFORD, Oxford, ME | Pass | State |
| 2025-07-01 | STEELSTONE INDUSTRIES, INC. | HOULTON, Aroostook, ME | Pass | State |
| 2025-06-19 | REGENERATE LIVERMORE FALLS LLC | LIVERMORE FALLS, Androscoggin, ME | Pass | State |
| 2025-06-19 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-06-18 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-06-17 | REGENERATE STRATTON LLC | STRATTON, Franklin, ME | Pass | State |
| 2025-06-17 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-06-17 | WOODLAND PULP LLC — high-priority violation on file | BAILEYVILLE, TOWN OF, Washington, ME | Pass | State |
| 2025-06-13 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-06-11 | CASCO BAY ENERGY COMPANY, LLC | VEAZIE, Penobscot, ME | Pass | State |
| 2025-06-11 | IRVING OIL TERMINALS INC. | SEARSPORT, Waldo, ME | Pass | State |
| 2025-06-10 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-06-10 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
| 2025-06-10 | CASCO BAY ENERGY COMPANY, LLC | VEAZIE, Penobscot, ME | Pass | State |
| 2025-06-10 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2025-06-10 | WASTE MANAGEMENT DISPOSAL SERVICES OF MAINE, INC. — high-priority violation on file | NORRIDGEWOCK, Somerset, ME | Pass | State |
| 2025-06-05 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-06-03 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-05-29 | EMERY LEE AND SONS INCORPORATED | EAST MILLINOCKET, Penobscot, ME | Pass | State |
| 2025-05-28 | STEELSTONE INDUSTRIES, INC. | HOULTON, Aroostook, ME | Fail | State |
| 2025-05-22 | PENOBSCOT BAY TERMINALS, INC. D/B/A WEBBER TANKS | BUCKSPORT, Hancock, ME | Pass | State |
| 2025-05-21 | COLD BROOK ENERGY, INC. | HAMPDEN, Penobscot, ME | Pass | State |
| 2025-05-20 | GLOBAL COMPANIES LLC | SOUTH PORTLAND, Cumberland, ME | Pass | State |
| 2025-05-20 | BUCKEYE TERMINALS, LLC | BANGOR, Penobscot, ME | Pass | State |
| 2025-05-20 | SAPPI NORTH AMERICA, INC. | SKOWHEGAN, Somerset, ME | Pass | State |
| 2025-05-13 | AUBURN ASPHALT, LLC | RICHMOND, Sagadahoc, ME | Pass | State |
| 2025-05-08 | CITGO PETROLEUM CORPORATION | SOUTH PORTLAND, Cumberland, ME | Pass | State |
| 2025-04-24 | DOWN EAST EMULSIONS, LIMITED LIABILITY COMPANY | BANGOR, Penobscot, ME | Pass | State |
| 2025-04-22 | EUROVIA ATLANTIC COAST LLC D/B/A COPIAM ASPHALT SOLUTIONS | HERMON, Penobscot, ME | Pass | State |
| 2025-04-22 | EUROVIA ATLANTIC COAST LLC D/B/A COPIAM ASPHALT SOLUTIONS | HERMON, Penobscot, ME | Pass | State |
| 2025-04-16 | TIMBERHP MADISON, LLC | MADISON, Somerset, ME | Pass | State |
| 2025-04-10 | ND PAPER INC. | RUMFORD, Oxford, ME | Pass | State |
Page 1 of 2NextPage 2
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.