The Texas Episodic Model Version 8 (TEM8) is a Fortran computer program designed to predict ground level, short-term concentrations of atmospheric pollutants. This model uses a technique, first introduced in the Texas Climatological Model, that requires much less computer time than most short-term models. Predictions are based upon the steady-state Gaussian plume hypothesis, Briggs plume rise formulations, and Pasquill-Guifford dispersion coefficient approximations. The TEM8 is a general purpose model that has many applications. Ground level concentrations for one or two pollutants can be determined for time periods from 10 minutes to 24 hours. TEM8 maintains the assumption that the mass of the plume cross section is conserved for all averaging times. Up to 300 individual point sources and up to 50 area sources may be input to the model.