Specifications include, but are not limited to: Bring clean equipment to the site (all equipment is free of vegetation, dirt, mud, seeds and other debris) and ensure it is clean before leaving site. The DNR requires actives steps to prevent or limit the introduction, establishment, and spread of invasive species during contracted work. Maintain a grass height of less than 5 inches. Where possible, mow a minimum 3-foot band around the entrance roads, parking lots, and adjacent to launch area. Clean site and pickup all litter, branches, and other debris at the site at least once every 7 days, or more frequently as needed. Keep ramp area free of sand and/or debris. Remove all aquatic vegetation from around ramp area at least once every 2 weeks, or sooner if needed. Spread vegetation on site in wooded areas, brush areas, or open areas away from ramp.