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.
Eco details: This member of the salmon family is an environmentally friendly alternative to farmed salmon. Char are mostly raised in tanks and raceways onshore, unlike salmon which are generally raised in open netpens in coastal waters. Onshore systems discharge less pollution and are much less likely to let fish and parasites escape than netpens.