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For those stacks where the terrain rise within a distance range is greater than the effective stack height (i.e., HETR is less than zero), the TAESH for that distance range is set equal to zero, and generic source number 1 should be used for that distance range for all subsequent distance ranges. Additionally, for all stacks with a physical stack height of less than or equal to 10 meters, use generic source number 1 for all distance ranges. 10 For the remaining stacks, proceed to Step 10(D).

Source

40 CFR § IX_to_part_266


Scoping language

None
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