WAC 246-272C-0160. Post-construction cast-in-place tank requirements

If the department approves the design and construction plan and authorizes construction, the design engineer shall: (1) Conduct a post-construction inspection of the completed cast-in-place tank; (2) Verify all applicable requirements were satisfied; (3) Verify all excavation, backfill, and compaction conform to the project's approved design and construction plan and specifications; and (4) Verify construction is complete and submit a construction certification to the department prior to use.