An SCR system for a coal-fired boiler may have a negligible impact on the footprint of the boiler.
The footprint of the boiler may be changed negligibly by an SCR system.
SCR systems always have a large footprint in relation to boiler size.
The men are camping
A woman walks down the sidewalk.
The Spanish settled the land before the English built the house.
The person is outside.
Two people out in public.
The old men play basketball.