The Oregon Convention Center, also known as OCC, hosts a variety of events. It is one of the largest convention centers in the Pacific Northwest. The center serves as a venue for conventions, industry tradeshows and meetings. It maintains an exhibition space that is spread across an area of more than 250,000 square feet. The center has ballrooms, as well as over 45 meeting rooms. Its facilities can accommodate gatherings of nearly 9,000 people. The center s clients include the United States Fencing Association and the Oregon Solar Energy Industries Association. It offers a variety of booth cleaning services, such as vacuuming, shampooing and tile mopping. The center also provides shipping, telecommunication and security solutions. The Oregon Convention Center has received the LEED certification from the U.S. Green Building Council. It administers a material and waste recycling and recovery program. The center has been visited by approximately 599,000 visitors and is managed by the Metropolitan Exposition Recreation Commission.