2.2 NON-POINT SOURCE EMISSIONS

 

 

2.2.1 General

 

     As explained in Section 1.2.1, the ISC volume, area and open pit sources are used to simulate the effects of emissions from a wide variety of industrial sources.  Section 1.2.2 provides a description of the volume source model, Section 1.2.3 provides a description of the area source model, and Section 1.2.4 provides a description of the open pit model.  The following subsections give the volume, area and open pit source equations used by the long‑term model.

 

 

2.2.2 The Long‑Term Volume Source Model

 

     The ISC Long Term Model uses a virtual point source algorithm to model the effects of volume sources.  Therefore, Equation (2‑1) is also used to calculate seasonal average ground‑level concentrations for volume source emissions.  The user must assign initial lateral (σyo) and vertical (σzo) dimensions and the effective emission height he.  A discussion of the application of the volume source model is given in Section 1.2.2.

 

 

 

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