32.The impounded water management plan must be updated and reviewed
(1) when a dam safety review is conducted;
(2) (paragraph revoked);
(3) prior to authorization for the structural alteration of the dam or for a change in use likely to affect its safety, including changes involving putting a dam back into operation or partially stopping its operation, if carrying out the project for which the authorization is sought would modify the impounding capacity, the full supply level or the discharge capacity of the dam. This rule also applies if the structural alteration would require modifying the safety check flood.