JANUARY 2008

Los Angeles Sanitation Districts to use liquefied natural gas in trucks

The Sanitation Districts of Los Angeles County have begun using five liquified natural gas (LNG) trucks to transfer municipal solid waste from Sanitation Districts’ transfer stations to landfills for disposal. The LNG trucks are the latest addition to the Sanitation Districts’ comprehensive clean fuels program, the goal of which is to replace Sanitation Districts’ wastewater and solid waste operational vehicles with compressed natural gas and LNG vehicles. The LNG trucks will be fueled at the Sanitation Districts’ LNG fueling station located at the Puente Hills Materials Recovery Facility in Whittier.

Cummins ISX 15-liter engines, equipped with Westport’s High Pressure Direct Injection (HPDI) fueling system, power the LNG trucks. The HPDI system, certified by the California Air Resources Board and the United States Environmental Protection Agency, allows engines to operate at lower emissions using LNG instead of diesel, as the primary fuel, using only a small quantity of diesel as the starting ignition source.

Sixty percent of the cost of the vehicles was funded by grants from the South Coast Air Quality Management District, the Gas Technology Institute, and the California Energy Commission, agencies that hope to facilitate continued deployment of these vehicles to reduce the impact of diesel emissions.