Experiments were conducted in a simulated boundary layer representative of rural terrain with a few shrubs and trees in neutral conditions. Vertical profiles of concentration were measured downstream of a rectangular building for various stack heights, emission characteristics and building positions.
The model scale in the wind tunnel was 1/200 of full scale. Full details of the building and source parameters are given in Snyder (1993) .
Model runs for comparison with the experimental data have been carried out using ADMS 4.2 (version 220.127.116.11).
Section 2 describes the input data used for the model. The results are presented and discussed in Section 3.