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Ontario waste class E112 Weedkiller for aquatic & field use, limited to 7 mg/L.

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  • Based on Ontario Regulation 347, Schedule 4
  • Nothing is stored

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E112, Diquat.

  • Ontario leachate quality criteria

    Diquat

Ontario TCLP limit: 7 mg/L for Diquat.

Ontario leachate limit of 7 mg/L for diquat, a contact herbicide used on aquatic weeds & crops.

Is Ontario E112 hazardous waste?

Yes, when the leachate limit is met. Ontario sets the leachate limit for diquat at 7 mg/L in the TCLP extract. A result at 7 mg/L meets it, subject to the regulation’s exclusions. A concentration in the original bulk waste is a different measurement, so it can't be compared with this limit.

For a shipment of this waste, the generator enters the 3-digit class and primary characterization in the waste-number details of the Ontario hazardous waste manifest. This number names the constituent for the assessment but doesn't replace the class-and-letter waste number. Land-disposal treatment standards are assessed separately.

What does Ontario E112 cover?

This number is a limit on diquat in the extract from the Toxicity Characteristic Leaching Procedure. The limit is 7 mg/L. It covers leachate toxicity, whatever the source industry, container or physical form. Ontario sets treatment requirements for land disposal separately.

Schedule
Schedule 4
Purpose
Leachate-toxic classification; Schedule 5 separately sets treatment standards
TCLP classification limit
≥ 7 mg/L
CAS
231-36-7

Is diquat always Ontario E112?

CodeWhen it fits
E112The TCLP extract holds 7 mg/L or more.
This constituent criterion not metThe TCLP extract is below 7 mg/L.

A result below the limit clears this constituent only. Other constituents, characteristic hazards and listed-waste rules still need assessing. Test against the classification limit first, then the land-disposal treatment standard.

Which wastes take Ontario E112?

WasteWhen it’s E112
Contaminated soilWhen the measured extract concentration meets the individual limit.

Which codes sit beside Ontario E112?

CodeWhat it is
E108Diazinon
E109Dicamba
E110Diclofop-methyl
E111Dimethoate
E113Diuron
E114Glyphosate
E115Malathion
E116Metolachlor