What is the public sector doing to reduce diesel emissions? Greenville County – Dan Powell and Alan Fairfield City of Greenville, SC & Greenlink Mike Horne, Support Services Manager (second presentation)

Greenville County DERA Project “It’s all about the air” A lot has happened during the past few years, with engine technology, fuel options, vehicle MPG, preventative maintenance training/intervals and manufacturer’s warranties. These changes have caused us to take a closer look at how we view and organize our fleet program and what we can do to contribute towards a healthy and clean air quality.

Greenville County DERA Project ♦ Diesel Oxidation Catalyst What is a Diesel Oxidation Catalyst (DOC?) ● A DOC is a device with a porous ceramic honeycomb-like structure that is coated with a material that catalyzes a chemical reaction to reduce pollution ● DOCs reduce emissions Particulate Matter-20% Hydrocarbons-50% Carbon Monoxide-40% ●DOCs cost about $1,200 - $2,000 for most vehicles and can be used with regular diesel fuel ●DOCs operate more efficient with Ultra Low Sulfur Diesel fuel ●DOCs require no maintenance and last several years

Greenville County DERA Project Closed Crankcase Ventilation System (CCV) What is a CCV? CCVs protect the engine and reduce crankcase emissions oil consumption by eliminating mist, aerosol vapors and oil drip CCVs require interval maintenance Greenville County has participated in a DERA grant program to install DOCs and CCVs on 3 road tractors, 3 roll off trucks, 1 front end loader and 2 dozers. The DERA program also repowered a front end loader and an Alltec aerial bucket truck.

The DOC replaces the muffler, but acts similar to a catalytic converter as in a car. Easy to install while not effecting negatively the performance of the engine.

Closed Crankcase Ventilation Systems (CCV)

Propane – DOE Project An Economic and Environmental alternative fuel choice ● The Economic advantage is a 30% reduction in fuel expense ● 90% of the propane supply is produced domestically and fuels over 10 million vehicles worldwide ●Increased engine life ● The Environmental advantage is an overall emissions reduction of 19% Carbon Monoxide-28% Hydrocarbons-35% Nitrogen Oxide- 4% Carbon Dioxide-16%

Propane – DOE Project Greenville County is participating in a DOE grant program to install propane conversion equipment on 100 Sheriff Pursuit vehicles and to add 3 propane fueling stations strategically within Greenville County. All conversion components, certified training, installation labor and fueling stations are being funded by the grant. The County utilized the vehicle residual value as their matching contribution. Greenville County employees will become certified propane installers and will have the ability to service and maintain the systems. Further, expanding propane utilization to other vehicles operated by the county or other governmental agencies will be easy as installation and infrastructure will already be in place.

Propane – DOE Project Grant was approximately $600,000 Greenville County Fleet logged approximately 10.4 million miles last year (this includes EMS and Sheriff’s Department). Greenville County Fleet will save approximately $93,000 in fuel costs per year. In 5 years that is a savings of $465,000 in fuel expenses. Infrastructure will be in place by late summer 2010 at 3 existing County fueling stations. The technology can be installed to both Diesel and gasoline vehicles. Saves money and helps to reduce emissions in a large vehicle fleet that is essential to public services.

Questions?