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Canadian waste code finder

L4 federal waste code Metalloid from smelting & timber treatment, at 2.5 mg/L or more in the leachate.

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  • Based on SOR/2021-25 and official ECCC guidance
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L4, Arsenic.

  • Federal leachate constituent codes

    Arsenic

Use L4 when its Method 1311 extract result is >= 2.500 mg/L.

Leachate toxic waste, where the Method 1311 extract holds 2.5 mg/L or more of arsenic. Arsenic is a metalloid.

Is Federal L4 hazardous waste?

Yes, if the listing and federal definition apply. L4 is the federal listing for arsenic. The recorded source, composition, concentration or test condition must match, and the exclusions in SOR/2021-25 still hold.

For federally regulated international shipments, the applicant records the waste classification in the waste-line details of the federal notification in CNMTS. The movement rules and exclusions go with it.

What waste does Federal L4 cover?

L4 covers arsenic. Use it when the Method 1311 extract result is 2.500 mg/L or more. Match the material, source and any stated composition, concentration, test or use condition. The name alone isn't enough.

Official wording
Arsenic
CAS
7440-38-2
Threshold
2.500 mg/L
Test
Method 1311 leachate extract

Is arsenic always Federal L4?

CodeWhen it fits
L4The Method 1311 extract result is 2.500 mg/L or more.

Pick the code from the material's real origin, use, composition and test results. A shared chemical or process word doesn't make 2 codes interchangeable. The full listed condition and any federal exclusion still rule.