Input Parameter | Comment and Assumptions | Value | Unit |
Source Type | Area source: It was assumed that emissions from the source are spread over an area | 3 | m2 |
Dispersion Coefficient | Urban: The land use has more than 50% of the surrounding area with residential buildings and various commercial activities and also with a population density greater than 750 people/m2 | >750 | people/m2 |
Emission Rate | Emission Rate = Cod × Vair, where Cod is measured odour concentration (ou/m3) Vair is mean speed of air at exit of vent (m/s) | 17,600 | ou/m2/s |
Source Release Height | The average height of the vent pipes | 3 | m |
Receptor Height | This was set as the average height of the field odour inspectors | 1.7 | m |
Wind Direction Relative to Long Dimension | Measured wind direction with the highest frequency | 247.5 | degrees |
Terrain Option | Simple flat terrain: This was chosen because terrain heights do not exceed stack base elevation | - |
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