Perhaps the best way to deal with the wood waste is to slip it into an existing product line. The City of Vancouver has a commitment to support “greener” building solutions.
I propose that the City of Vancouver, FPInnovations and CAWP invite the Ontario company, Durisol, to consider opening up a plant here in Vancouver, durisolbuild.com. All Durisol products are made from a proprietary cement-bonded wood fiber. They use specially graded recycled waste wood that includes NO post-consumer waste. However, I believe the process could be adapted as long as the end product was suitable for the more questionable qualities that post-cosumer waste has. This new Durisol material may be molded into many shapes, that could include highway acoustic treatment panels. As an incentive, the city could pre-purchase a number of panels.
I propose to build a panel that is a low density open cavity cement-bonded wood fiber on one side, and solid load bearing concrete on the opposite side (thus porosity and density). These panels would be a prefabricated system that would also be compatible with a Wood Hybrid Sound Barrier previously developed by FPInnovations and Wester Forest Products, http://www.newswire.ca/news-releases/fpinnovations-and-western-forest-products-introduce-a-new-green-and-cost-effective-sound-reduction-product-509174901.html.
Attached are sample pictures of what a Durisol system would look like.