Envirocon has been awarded a contract to install a soil-bentonite slurry wall and two bio-polymer slurry collection trenches at the Wyoming Refinery in Newcastle, Wyoming. The two collection trenches are 350 feet long each with a maximum depth of approximately 20 feet. The slurry wall is 1,600 feet long and a maximum of close to 30 feet deep. There are numerous constraints at the site, including crude supply lines, fuel product lines, overhead electric lines and other utilities that the walls will be installed near and around.