Which method is NOT typically used for removing groundwater?

The method of using a tractor to excavate is not typically employed for removing groundwater. This technique is generally associated with land preparation or large-scale excavation projects rather than the specific task of groundwater removal.

Other methods listed are standard practices in dewatering processes. For instance, perimeter trenching with pumps effectively collects and diverts groundwater away from a site, ensuring the construction area remains dry. Lowering the water table with well-points involves installing wells that can be pumped to reduce the overall groundwater level in the vicinity temporarily. Using a pump is a straightforward and common method of extracting water from an area. Each of these methods directly addresses the issue of groundwater management, whereas excavation with a tractor does not serve this purpose in the same context.