Specifications include, but are not limited to: The Contractor shall store petroleum products with containers of 55 gallons or larger in areas with secondary containment. Paints, solvents, pesticides, and other hazardous materials shall be stored in a dry, weather protected area off the ground. In no case shall paints, solvents, pesticides, petroleum products, and other hazardous materials be stored in restricted areas 2. The Contractor shall perform washout of concrete mixers, delivery trucks, and other delivery systems in conformance with Section 824. 3. Hazardous materials storage, including portable toilets, shall be restricted to specific areas away from: a. vehicular traffic b. sensitive areas or restricted use areas as shown on the plans c. waters of the state, including wetlands (50 feet minimum distance)