A3030 Basel waste code Sludge from leaded petrol additives.

Is Basel A3030 hazardous waste?

Normally yes. A3030 is on Basel List A, so the material is presumed hazardous unless the evidence shows it has no Annex III hazardous characteristic. The exact description and any stated exclusions still have to match.

For international shipments under the federal rules, the applicant enters the waste classification in the waste-line details of the federal notification in CNMTS. The movement rules and exclusions still apply.

Is leaded anti-knock sludge waste Basel A3030 or another code?

Pick the entry whose description and conditions match the material. The code names the waste, but SOR/2021-25 scope, exclusions, destination-country controls and the intended operation are separate decisions.