U.S. Environmental Protection Agency

Air Emissions Factors and Quantification, Chapter 13: Miscellaneous Sources

In this action, the Environmental Protection Agency (EPA) promulgates revisions to the Guideline on Air Quality Models (‘‘Guideline’’). The Guideline provides EPA’s preferred models and other recommended techniques, as well as guidance for their use in estimating ambient concentrations of air pollutants.

Method 1312 is designed to determine the mobility of both organic and inorganic analytes present in liquids, soils, and wastes.

This report represents a state-of-the-art synthesis of current knowledge of the ecology and hydrology of ephemeral (dry washes) and intermittent streams in the American Southwest.