Specifications include, but are not limited to: 40,000 gal. (more or less 15%) Premium Ultra Low Sulfur Diesel Fuel (clear) OR 40,000 gal. (more or Less 15%) B5 Premium Ultra Low Sulfur Biodiesel Fuel (clear); Cetane Number: 45 minimum; Pour Point, F: Winter - 20 Summer - 10; Cloud Point, F: Winter - 10 Summer + 5; Sulfur, 15 ppm maximum; Note: The Logan County Highway Department utilizes above ground fuel storage rather than underground. Our maximum capacities are 4000 gallons diesel and 2000 gallons gasoline. B5 Biodiesel fuel must meet all requirements of ASTM D975-15c standard. Purchase B100 fuel that meets all requirements of ASTM D6751-15b standard and only from companies that are “certified marketers” or “accredited producers” under the BQ-9000 Biodiesel Quality Program.