VANCOUVER, Washington — Canadian-owned Western Forest Products plans to expand its Fruit Valley manufacturing operation, according to pre-planning documents submitted to the city of Vancouver. Plans show the company expects to build up to three prefabricated steel buildings and an office building, as well as demolish its existing Fruit Valley lumber drying kilns and storage buildings. “We are supporting a modest expansion of our product and service portfolio,” Babita Khunkhun, the company’s senior director of communications, said. Khunkhun said planning for the expansion will continue throughout the year. The company intends to invest in new machinery at its Fruit Valley manufacturing site and make ready-to-install fabricated glulam beams, she said. The Fruit Valley operation is currently used for secondary lumber manufacturing. …A summer blaze left the company’s Columbia Vista sawmill beyond repair according to a state layoff notification from July. The company has decided to sell that site.