ESC plan waiver approved. BMPs include immediate haul away of excavated excess soils, storm drain protection, and pollution prevention practices in staging area. See also ESC15-01613**Project Management-Ron Hill** (BOISE CENTRE LOBBY EXPANSION, TERRACE, PEDESTRIAN WALKWAY, AND CONCOURSE) (DRH15-00462) Fire sprinkler systems used for high-rise and for occupancy. To expand a portion of the existing Boise Centre Convention building by constructing a 2nd story to create a vertical circulation route to a new elevated pedestrian walkway and enclosed elevated concourse that will connect the Boise Centre Convention building to the City Center Plaza building (3,603 square feet total). The floor of the new elevated circulation route will be located about 24 feet above grade, at the perimeter of The Grove. The concourse will be part of the Century Link Arena building. A terrace will also be constructed at the Boise Centre Convention building adjacent to The Grove.