ISC3

ISC3 (Industrial Source Complex) model is a popular steady-state Gaussian plume model which can be used to assess pollutant concentrations from a wide variety of sources associated with an industrial complex.

This model can account for the following:
 * Point, area, line, and volume sources
 * Settling and dry deposition of particles
 * Downwash
 * Separation of point sources
 * Limited terrain adjustment

ISC3 operates in both long-term and short-term modes. The screening version of ISC3 is SCREEN3.

Very recently, the status of ISC3 as a Preferred/Recommended Model of the US Environmental Protection Agency has been withdrawn, but it can still be used as an alternative to the Preferred/Recommended models in regulatory applications with case-by-case justification to the reviewing authority.

Input data
ISC short term version required two sets of data: source data and hourly averaged meteorological data:

Source data

 * Dimensions of the source
 * Emission discharge rate
 * Release height of the emission source

Meteorological data

 * Ambient temperature, K
 * Wind direction
 * Wind speed, m/s
 * Atmospheric stability classes (A through F, entered as 1 through 6)
 * Urban and rural mixing height, m