Ontario waste class 143 Slag, dust & sludge from making steel.
- Free, no account
- Based on Ontario Regulation 347 and registration guidance
- Nothing is stored
Find a Canadian waste code
143, Steelmaking residue.
Ontario inorganic wastes
Steelmaking residue
Ontario group: miscellaneous inorganic wastes and mixed wastes.
ComplyOnSiteIs Ontario 143 hazardous waste?
Not from the code alone. Ontario 143 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 143 cover?
Steelmaking residue. Examples are dust or sludge captured by emission controls at a steel plant, steel-plant precipitator residue, and dewatered solids from either source.
Is steelmaking residue Ontario 143 or another class?
| Code | When it fits |
|---|---|
| 143 | The stream is steelmaking residue. |
| 142 | The residue comes from primary lead, zinc or copper smelting rather than steelmaking. |
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 143?
| Waste | When it’s 143 |
|---|---|
| Sludge and dust captured by emission controls | Which steelmaking step produced it |
| Steel-plant residue collected by a precipitator | Which steelmaking step produced it |