Difference between Mudjacking and Polyurethane Concrete Raising. Also called foam lifting, polyurethane for concrete raising has been in practice for about 20 years. However, the price of the equipment and polyurethane material made it way too expensive for private contractors to adopt and replace traditional mudjacking.
Farmed salmon available in Washington state markets is produced in Washington State, Canada, Maine, or Chile. Studies on salmon from these sources have shown low levels of organic contaminants in the fish.
Sea Lice & Salmon Farms. Sea lice from salmon farms are one of the most significant threats facing wild salmon in British Columbia. Stocked year round with hundreds of thousands of fish in small areas (net-cages) fish farms are ideal, and unnatural breeding grounds for lice.