9 Mile Dam Sediment Bypass (for Avista Energy), Spokane, WAsisadmin2020-08-04T22:40:46+00:00 Project Description Client: IMCO Construction, Inc. Representing: Contractor Project Details Categories: US Army Corp of Engineers or Similar Specifications Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTumblrPinterestVkEmail