Research Projects

Project at a Glance

Project Status: complete

Report Published 1974:

Title: Control of oxides of nitrogen from stationary sources in the South Coast Air Basin.

Contractor: KVB Engineering, Inc.

Contract Number: 2-1471

Research Program Area: Emissions Monitoring & Control

Topic Areas: Stationary Sources


A comprehensive inventory has been taken of oxides of nitrogen (NOx) emissions from stationary sources within the South Coast Air Basin for the period of July 1972 through June 1973. Included are the emissions from over 1500 point sources assessed from detailed device and fuel use information provided by operators, and emissions from area distributed domestic, commercial, and industrial sources, essentially accounting for all fuel burned by stationary sources in the Basin. Although there was no directly comparable inventory with which to compare, it is believed that the inventoried emissions were some 15-20% higher than had previously been estimated. Power plant emissions were found to still be dominant, followed by those from refineries, and then by a number of lesser source categories.

Seasonal variations of emission were assessed, as was the geographical distribution on a 10 km grid square basis. Forecasts were made of emissions in the several source categories for 1975 and 1980.

The stationary source NOx emissions were added to predicted mobile source emissions and the total was compared with an EPA air quality prediction for the Basin in order to estimate the reduction required to meet Federal air quality standards. The amount of stationary source emissions that could be reduced on a cost effective basis equal to or greater than that of current mobile source controls was examined on a device class basis. A substantial portion of the needed reduction was determined as potentially achievable on a cost effective basis using known combustion modification techniques. Under the worst case situation still further reduction would be required however. Securing a substantial increase in available natural gas supply for the Basin was shown to be a very effective means of achieving the additional reduction if somehow it could be accomplished.


For questions regarding this research project, including available data and progress status, contact: Heather Choi at (916) 322-3893

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