1. BIODIESEL FLEET in PUBLIC WORKS OPERATIONS NASSAU COUNTY DEPT OF PUBLIC WORKS THOMAS R SUOZZI COUNTY EXECUTIVE RAY RIBEIRO, P.E. COMMISSIONER

2. NASSAU COUNTY CLEAN AIR AND ENERGY STRATEGIES Renewable Energy Renewable Energy Green Building Green Building Green Levittown Green Levittown Cool Cities Cool Cities Clean Commute Options Clean Commute Options Diesel Retrofit Program Diesel Retrofit Program Vehicle Idle Reduction Vehicle Idle Reduction Alternative Fuels Alternative Fuels –E85 Ethanol –Compressed Natural Gas –Hybrids –ULS B20 Biodiesel

3. NASSAU COUNTY PUBLIC WORKS FUNCTIONS Engineering Engineering Construction Management Construction Management Contract Administration Contract Administration Building Maintenance Building Maintenance Stormwater Management Stormwater Management Sanitary Sewers Sanitary Sewers Road Maintenance Road Maintenance Fleet Maintenance Fleet Maintenance

4. DPW FLEET MAINTENANCE Responsible for 1,105 vehicles Responsible for 1,105 vehicles – 667 DPW vehicles – 438 other depts 356 Diesel Vehicles Countywide 356 Diesel Vehicles Countywide – 300 DPW – 56 in other depts 25 Diesel Mechanics 25 Diesel Mechanics 16 Diesel Fueling Sites 16 Diesel Fueling Sites

5. DPW FLEET MAINTENANCE

6. Biodiesel Deliveries ULS B20 Diesel switch in 2005 ULS B20 Diesel switch in 2005 First BioDiesel delivery on August 15, 2005 First BioDiesel delivery on August 15, 2005 2005 – 1 Site 2005 – 1 Site 2006 – 2 Sites 2006 – 2 Sites 2007 – 16 Sites 2007 – 16 Sites Blanket order with Sprague Energy Blanket order with Sprague Energy

7. Biodiesel Deliveries

8. Biodiesel Challenges in a DPW Fleet Fuel Cost Fuel Cost Fueling System Maintenance Fueling System Maintenance Vehicle Maintenance Vehicle Maintenance

9. Biodiesel Challenges in a DPW Fleet Fuel Cost* Fuel Cost* – $2.67 for CNG – $2.85 for Gasoline – $3.45 for E-85 – $3.50 for Diesel – $3.91 for ULS B-20 Diesel $71,750 annual increase $71,750 annual increase –$0.41 X 175,000 * Gallon Equivalent Cost as of April 7, 2008

10. Biodiesel Challenges in a DPW Fleet Fueling System Maintenance Fueling System Maintenance – BioDiesel acts as a detergent agent and actually cleans out tanks. – 35 fuel filter replacements at diesel pumps to date. – Minor material cost increases. – Increased labor costs. – Increased pump down time.

11. Biodiesel Challenges in a DPW Fleet Vehicle Maintenance Vehicle Maintenance -400 fuel filter replacements in vehicles to date. – 35 Fuel tanks have been dropped. $200 to $1,000 each$200 to $1,000 each – Increased material costs. – Increased labor costs. – Manufacturer Warranties B5 vs B20B5 vs B20

12. So Why use Biodiesel in a DPW Fleet? Reduce carbon dioxide emissions by 15%. 1 Reduce carbon dioxide emissions by 15%. 1 Reduce particulate matter emissions by 10%. 1 Reduce particulate matter emissions by 10%. 1 Reduce carbon monoxide by 11%. 1 Reduce carbon monoxide by 11%. 1 Reduce unburned hydrocarbons by 21%. 1 Reduce unburned hydrocarbons by 21%. 1 Reduce life cycle petroleum consumption by 19%. 2 Reduce life cycle petroleum consumption by 19%. 2 1 (Source: U.S. Environmental Protection Agency, A Comprehensive Analysis of Biodiesel Impacts on Exhaust Emissions. 2According to a study by the National Renewable Energy Laboratory.

13. Impact of Nassau County’s Biodiesel DPW Fleet? Based on 175,000 gallons of B20 Biodiesel used in 2007 Nassau Co: reduced CO2 by 555,000 lbs reduced CO2 by 555,000 lbs reduced CO by 18,000 lbs reduced CO by 18,000 lbs reduced PM10 by 100 lbs reduced PM10 by 100 lbs reduced petroleum consumption by 33,000 gallons reduced petroleum consumption by 33,000 gallons

14. BIODIESEL FLEET in PUBLIC WORKS OPERATIONS NASSAU COUNTY DEPT OF PUBLIC WORKS Ray Ribeiro (516) 571-9604 rribeiro@nassaucountyny.gov