This report describes the potential environmental impacts and proposed mitigating measures associated with the construction and operation of an extension of the North Central Corridor light rail transit (LRT) system north of Park Lane. It compares the consequences associated with the locally preferred alternative (LRT) against those of a baseline "no-build alternative." This Final Environmental Impact Statement (EIS) for the Northwest Corridor was written following the completion of a Draft EIS and subsequent 45-day public review and comment period and it includes responses to concerns raised during that period.