Ontario waste class 146 Sludges & solids from industry that fit no other class.
- Free, no account
- Based on Ontario Regulation 347 and registration guidance
- Nothing is stored
Find a Canadian waste code
146, Other inorganic sludge and solids.
Ontario inorganic wastes
Other inorganic sludge and solids
Ontario group: miscellaneous inorganic wastes and mixed wastes.
ComplyOnSiteIs Ontario 146 hazardous waste?
Not from the code alone. Ontario 146 describes the waste stream, not whether it is hazardous. Ontario decides that from the hazardous characterization or liquid-industrial status, and from the exclusions. The 3-digit class needs a primary characterization letter to form the waste number.
For subject waste, the generator enters the class-and-letter waste number in the waste details of the Ontario hazardous waste manifest. Ontario’s exclusions and shipment rules also apply.
What does Ontario 146 cover?
The remaining sludges, slurries and solids of inorganic composition. Examples are residue from flue-gas scrubbers or dust collectors, wet fly ash, discarded metal dust or abrasive, foundry sand, and water and sediment mud. Bottom material from a tank that stored mixed inorganic waste also fits, as does heavy screening or filtration sludge from a transfer or processing site when no other class describes it.
Is other inorganic sludge Ontario 146 or another class?
| Code | When it fits |
|---|---|
| 146 | The stream is remaining listed sludges, slurries or solids of inorganic composition. |
| 270 | The mixed sludge or solids are organic rather than inorganic. |
When several characterizations apply, the registration flowchart picks the primary one. A 3-digit class doesn't replace the flowchart or the exclusions.
Which wastes take Ontario 146?
| Waste | When it’s 146 |
|---|---|
| Used sandblasting grit | Inorganic composition and residue source |
| Waste foundry sand | Inorganic composition and residue source |
| Residue from cleaning flue gas | Inorganic composition and residue source |
| Fly ash in wet form | Inorganic composition and residue source |
| Material captured by a dust collector | Inorganic composition and residue source |
| Discarded metal dust and abrasive material | Inorganic composition and residue source |
| Used foundry sand | Inorganic composition and residue source |
| Mixture of mud, sediment and water | Inorganic composition and residue source |