Industrial classification of PVC resin and binding refund undertaking defeated alternate remedy and unjust enrichment objections.

A writ petition was entertained despite an alternative statutory appeal because the dispute involved a pure question of classification, the facts were undisputed, and the matter had remained pending for a long time. PVC Resin imported for industrial manufacture was classified as a chemical for industrial use, not as plastic under the household-goods entry, because the schedule had to be read by class heading and the commodity's trade and technical understanding supported treatment as a synthetic resin and chemical. Refund of excess octroi collected during the petition was also directed, as the corporation's undertaking to refund on success could not later be defeated by a plea of unjust enrichment.

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Issues: (i) Whether the writ petition should be declined on the ground that an alternate statutory appeal was available under the municipal law. (ii) Whether PVC Resin imported for industrial manufacture was classifiable for octroi as plastic under the household-goods entry or as a chemical under the industrial-use entry. (iii) Whether refund of excess octroi collected during the pendency of the petition could be denied on the ground of unjust enrichment despite the Corporation's undertaking to refund if the petition succeeded.

Issue (i): Whether the writ petition should be declined on the ground that an alternate statutory appeal was available under the municipal law.

Analysis: The availability of an appellate remedy does not bar writ jurisdiction where the dispute raises a pure question of classification, the relevant facts are undisputed, and the matter has remained pending for a long time. The record showed no factual controversy requiring evidence in appeal, and the Corporation had proceeded on the basis that the petition would be heard on merits after giving an undertaking regarding refund.

Conclusion: The objection based on alternate remedy was rejected and the petition was entertained under Article 226.

Issue (ii): Whether PVC Resin imported for industrial manufacture was classifiable for octroi as plastic under the household-goods entry or as a chemical under the industrial-use entry.

Analysis: The classification entries had to be read with their class headings, and the heading of the industrial-use class showed that chemicals of all kinds imported for industrial use fell within the relevant entry. PVC Resin was treated in trade and in technical understanding as a synthetic resin and chemical, not as plastic or plastic powder in the sense relevant to the household-goods entry. The placement of the words in the schedule, the trade understanding of the commodity, and the distinction between synthetic resin and plastic supported classification under the industrial-use entry.

Conclusion: PVC Resin was held to fall under the chemical entry for industrial use and not under the plastic entry.

Issue (iii): Whether refund of excess octroi collected during the pendency of the petition could be denied on the ground of unjust enrichment despite the Corporation's undertaking to refund if the petition succeeded.

Analysis: The Corporation had given a solemn undertaking to refund the excess amount if the petition succeeded, and that undertaking formed the basis on which interim relief had been refused. In those circumstances, the plea of unjust enrichment could not be used to defeat the refund obligation after the petitioners succeeded on merits.

Conclusion: Refund of the excess octroi was directed, and the plea of unjust enrichment failed.

Final Conclusion: The petitioners succeeded on all substantive questions decided by the Court, and the levy under the plastic entry was set aside in favour of classification under the chemical entry with consequential refund relief.

Ratio Decidendi: Where tariff or octroi entries are classified by class headings and user-based descriptions, the commodity must be construed in trade and technical context, and a pure industrial chemical or synthetic resin cannot be forced into a household-goods plastic entry; a solemn undertaking to refund excess levy is binding and cannot later be avoided on a plea of unjust enrichment.

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