Client—Columbia River Carbonates, Woodland, Washington
Columbia River Carbonates (CRC) supplies high-grade ultra-fine ground calcium carbonate products throughout the northwestern United States and western Canada. CRC is expanding their East and West Plants. The East Plant expansion includes a hopper, a conveyor belt and tunnel system, a stone stockpile enclosure, and two roadway embankments constructed using mechanically stabilized earth (MSE) retaining walls leading up to the hopper. The West Plant expansion includes a mill building, a pelletizing plant and office building, several silos, a hopper, a conveyor belt and tunnel system, a large stockpile enclosure, and roadway embankment supported by two MSE retaining walls. The improvements also included design and accommodations for future expansion. Gibbs & Olson’s services include site, utility, roadway and stormwater design as well as surveying and permitting support. The East Plant expansion was completed in 2016. The West Plant expansion is starting construction and will be completed in 2018.