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.
Salmon farming is associated with numerous environmental concerns, including water pollution, chemical use, parasites and disease. Wild salmon from Alaska come from a well-managed fishery and are low in contaminants. There are five species of wild salmon from Alaska: chinook, chum, coho, pink, and sockeye. All come from well-managed fisheries and are low in contaminants. Arctic char, a member of the salmon family, comes primarily from eco-friendly farms.