Change in the project design

- a reevaluation is required if there is a change in the limits, ROW requirements, alignment, project features, layout, or other aspect of the design that was the basis for the environmental clearance;

Substantial change in affected environment prior to start of construction

– a reevaluation is required if there is a substantial change in the baseline traffic volumes, land use, population, displacements, or any other aspect of the affected environment that was the basis for the environmental clearance;

Three-year delay between environmental clearance and start of construction

(does not apply to projects that were cleared as expedited (c)(22) CEs) - if more than three years have elapsed since the environmental clearance, and construction has still not begun, then a reevaluation must be conducted after the reason for the delay has been resolved and the project is ready to be built, but prior to the actual start of construction;

Three-year suspension in all construction activities on the project

(does not apply to projects that were cleared with expedited (c)(22) CEs) - if all construction activities on the project are completely suspended for a three-year period, then a reevaluation must be conducted after the reason for the suspension has been resolved and construction is ready to resume, but prior to the actual recommencement of construction; or

Omission/new information

- a reevaluation is required if an omission or new information is discovered that could affect the validity of the environmental clearance (e.g., Section 4(f) property missed, public hearing was required but not conducted, or noise analysis was required but not conducted).

Three-year delay between Draft EIS (DEIS) and Final EIS(FEIS)/Record of Decision (ROD);

No major steps to advance the project for three years after the FEIS/ROD (or FEIS supplement); or

Three-year delay between major steps to advance the project after the FEIS/ROD.