1. UNLEADED UNBRANDED GASOLINE SPECIFICATION Unleaded gasoline delivered under this contract will comply with: the American Society of Testing Materials; and unleaded gasoline specification requirements as set forth in the most current revision of ASTM Designation D-439 for gasoline, amended to comply with the regulations of the Massachusetts Department of Environmental Protection; and any other applicable Federal and /or Commonwealth regulations and laws. 2. ULS PREMIUM DIESEL Ultra Low Sulfur, S15 (<15 PPM), for municipal use on the road including use in 2007 advance emission controlled engines. Fuel to be red dyed with taxes handled as per current procedures at each town. Premium Diesel to be defined by interim standards developed by the National Conference of Weights and Measures (NCWM). The goal of these specifications is to provide a meaningful definition of premium diesel. This is so premium diesel can be: • Accurately and clearly distinguished from non-premium or "regular diesel". • Accurately and clearly identified through bills of lading, Invoices, shipping papers, or other documentation Definition of premium diesel - Five properties shall be included in the definition of premium diesel. All 5 of these properties can be shown to provide an improved benefit to the consumers over D975 spec. They are included below with a brief description. a) Energy Content: Diesel Fuels with higher energy content can provide higher power and increased fuel economy to the consumer. The requirement to meet this criterion is a minimum 138,700 Btu/gallon gross as measured by ASTM Standard Test method D240. b) Cetane Number: Higher Cetane diesel fuels have been shown to reduce white smoke, reduce noise, reduce engine misfire, provide easier cold starting, and reduce some regulated emissions in many engine types. The requirement is 47.0, Minimum, Cetane Number as measured by ASTM Standard Test Method D613. c) Low Temperature Operability: Under low ambient temperature conditions, wax can precipitate from diesel causing restrictions in fuel flow that can result in engine stall. For a normal winter, providing a fuel capable of operating at lower ambient air temperatures than the ASTM guidelines may provide a benefit to the consumers in winter operation. The requirement to meet this criterion is a cold temperature operability measurement equal to the ASTM D975 tenth percentile minimum ambient air temperature charts and maps by: • Cloud point as determined by the ASTM Standard Test Method D 2500 or • Low Temperature Flow Test (LTFT) as determined by ASTM Standard Test Method D4539. d) Thermal Stability: Diesel Fuel is increasingly used as a coolant for high-pressure fuel injection systems that can thermally stress the fuel. In some cases, this stress can cause the fuel to degrade and form insoluble materials that can restrict fuel flow through filters and injection systems. The requirement to meet this criterion is a minimum 80% reflectance measurement using a green filter in the F21-61 stability test (180 minutes, 150 degrees C). Note: This test method will soon be reviewed for adoption as an ASTM Standard Test Method. e) Fuel Injector Cleanliness: The Requirement is as follows: Fuel must meet: • CRC rating of 10.0 or less using Cummins L-10 Injector Depositing Test • Fuel flow loss of less than 6.0% using the Cummins L-10 Injector Depositing Test. When a detergent additive is used to meet this requirement, the effectiveness must be tested in the test reference fuel (Caterpillar 1-K) in the L-10 test. If another fuel is used, an L-10 test may need to be run on that specific fuel. f) Premium Diesel Identification: All products identified on, bills of lading, Invoices, shipping papers, or other documentation as premium, super, supreme, plus, or premier shall conform to at least 2 of the 5 recommended requirements listed and described above. g) All diesel fuel must comply with the Federal Specifications, General Services Administration; the American Society of Testing Materials; and diesel fuel specifications ASTM D-975 amended to comply with the regulations of the Massachusetts Department of Environmental Protection; and any other applicable Federal and/or Commonwealth regulations and laws. h) An analysis of the products proposed must be attached to the proposal. The analysis shall be that of the laboratory of the refiner and shall be a definite certified analysis currently made and not approximate.
