Created March 2014

Produced for Southern California Gas Company

Webinar description:

Southern California Gas Company (SoCalGas®) and the Coalition for Clean Air hosted a webinar addressing a new report written by Gladstein, Neandross & Associates for SoCalGas that identifies how near-zero emissions natural gas-fueled heavy-duty vehicles can provide a viable pathway in helping California achieve its air quality and climate protection goals. Industry and air pollution control agency experts discussed the latest natural gas engine technologies, research and development projects and heavy-duty engines powered by natural gas as the foundation of the state’s strategy to clean up smog, eliminate diesel particulates and reduce the state’s greenhouse gas footprint.


Matt Miyasato
South Coast Air Quality Management District

Dr. Matt Miyasato is the Deputy Executive Officer for Science & Technology Advancement at the South Coast Air Quality Management District.  He is responsible for the SCAQMD’s Technology Advancement Office, Mobile Source Division, and Monitoring and Laboratory Analysis Division.  Dr. Miyasato’s principal charges are to identify, evaluate and stimulate development and commercialization of clean air technologies, develop and coordinate mobile source regulations, and to conduct ambient monitoring, source testing and laboratory analysis.

Mark Walls
Southwest Research Institute

Since joining Southwest Research Institute’s Engine, Emissions and Vehicle Research Division in 1996, Mr. Walls has been involved in test system development of engine and chassis dynamometer facilities, stationary and mobile fuel cell performance testing, hybrid hydraulic and electric vehicle design and testing for light, medium, and heavy duty vehicles. Additionally, Mr. Walls has worked with alternative/advanced engine combustion techniques, such as highly dilute, Homogenous Charge Compression Ignition (HCCI), and Low Temperature Combustion (LTC) for gasoline, diesel, natural gas and propane engines.

Stephen Ptucha
Cummins Westport

Joining parent company Westport in 2000, Stephen Ptucha has been involved with the design and development of both the Westport 15L and Cummins Westport ISL G engines. Previous to his return to CWI, Mr. Ptucha held the role of Director of HD Product Management for the Westport HD business providing strategic planning and product management for the Heavy Duty products including the Westport HD 15 litre engine.