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Drainage - Below ground stormwater checklist

This Drainage (Below Ground Stormwater) audit checklist is for assessing below ground stormwater drainage installations. It outlines Level 1 and Level 2 performance and compliance checks, including excavation, materials, drainage capacity, installation and testing. The BPC uses this checklist to guide audits and verify that drainage work meets required standards, codes and manufacturer specifications.
Version history
Category
Audit and Inspection checklist
Version
3.0
Published
17 June 2025
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