Under the OPA, the President has delegated NRDA responsibilities to the DOC. Within the DOC, NOAA has the NRDA responsibilities, and it issued its NRDA regulations at
15 CFR 990. The OPA NRDA regulations identify a 3-phase process for assessing damages and restoring injured resources: the Preassessment Phase, the Restoration Planning Phase, and the Restoration Implementation Phase.
The Preassessment Phase is first conducted to determine if:
If the results of the preassessment indicate that there is jurisdiction to pursue restoration, then the Restoration Planning Phase is initiated. This phase includes the determination and quantification of the natural resource injury, development and evaluation of restoration alternatives, and development of restoration plans. Natural resource restoration is then implemented via the Restoration Implementation Phase.