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Backwater valves installed in a storm drainage system shall conform to Section 18-29-715.
Inside storm drainage conductors installed above ground shall conform to one of the standards listed in Table 18-29-702.1.
Underground building storm drain pipe shall conform to one of the standards listed in Table 18-29-702.2, except that neither polyvinyl chloride (PVC) nor polypropylene (PPL) pipe and fittings shall be allowed in stormwater detention applications as oversized pipe.
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