Specifications include, but are not limited to: Vendor Requirements: - The vendor must be a reputable supplier of R99 renewable diesel fuel. - The vendor must have the capability to deliver the fuel within two (2) days of an order being placed. - The vendor must comply with all relevant environmental regulations and standards for renewable diesel production and delivery. Fuel Specifications: - The renewable diesel fuel must meet the following specifications: * ASTM D975 or equivalent standard for diesel fuel. * Renewable diesel must be produced from sustainable feedstocks, such as biomass, animal fats, or recycled cooking oil. * The fuel should have excellent cold flow properties to ensure operability in cold weather conditions. * The fuel must be free from impurities and contaminants that could adversely affect engine performance or emissions.