Hazardous waste classification requires reliable laboratory proof before confiscation, re-export, or fresh adjudication can be sustained.

Imported lubricant oil cannot be conclusively treated as hazardous waste when the laboratory basis is uncertain, the actual testing laboratory is not clearly identified, and the underlying test report is not produced. The hazardous waste regime requires reliable technical determination, including testing by a competent notified laboratory where necessary and consultation with the designated environmental authorities. On these facts, the confiscation and re-export directions could not stand on the existing record, and the matter required re-testing and fresh adjudication in accordance with natural justice.

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Issues: Whether the imported lubricant oil was conclusively established to be hazardous waste and whether, in the circumstances, the adjudication could stand without re-testing the samples by a competent notified laboratory and proper consultation with the designated environmental authorities.

Analysis: The imported goods were treated as hazardous waste on the basis of laboratory reports, but the cross-examination of the Chemical Examiner showed that the original testing was not performed by the customs laboratory itself and that the laboratory lacked the facility to ascertain the hazardous character of the goods at the relevant time. The reports did not clearly disclose the actual testing laboratory or furnish the underlying test report. In these circumstances, the evidentiary basis for concluding that the goods were hazardous waste was found to be insufficiently reliable. The statutory scheme under the hazardous waste rules also contemplates control by the designated pollution authorities and, where necessary, testing by appropriately recognised laboratories. The earlier directions and the long pendency of the matter further justified a fresh determination on the true nature of the goods.

Conclusion: The finding that the goods were hazardous waste and the consequential confiscation and re-export directions could not be sustained on the existing record; the matter had to go back for re-testing and fresh adjudication.

Ratio Decidendi: Where the conclusion that imported goods are hazardous waste rests on uncertain or inadequately supported laboratory material, the goods must be re-tested by a competent notified laboratory and decided afresh in accordance with the hazardous waste regime and principles of natural justice.

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