Where can excess material needed for an embankment be obtained?

A borrow site is the designated area where excess material for an embankment can be obtained. These sites are often specifically selected for their suitable materials that meet the engineering requirements for the project. The materials extracted from a borrow site are typically soil, gravel, or other aggregate types that provide the necessary stability and support for construction purposes.

In contrast, while a stockpile may contain excess materials, it is usually a temporary holding area that collects materials already excavated or brought in from other sources, rather than the origin of new material. An excavation site refers to an area where material is being removed for the project; while it may provide some material, it usually does not represent a designated source for new embankment material. The project site might have some excess material, but it is primarily where construction activities take place, rather than a dedicated source for obtaining additional fill.