Which type of excavation equipment is best for removing and stockpiling on-site 2 ft of soil from 1 acre of excavation area?

The correct choice for this scenario is the scraper. A scraper is specifically designed for moving and transporting large volumes of earth over moderate distances. It has a bowl that can scoop up soil, and its design allows it to efficiently load, haul, and dump material, which makes it ideal for removing and stockpiling soil.

In the context of stockpiling soil from an acre of excavation area, the scraper's ability to perform multiple tasks—such as cutting, loading, hauling, and spreading—without the need for additional equipment is an advantage. It can handle the required depth of 2 ft efficiently and effectively.

Other types of equipment, while useful for certain tasks, may not be as suited for this specific job. For instance, excavators are excellent for digging and lifting but are typically more effective in smaller, confined spaces rather than on larger areas for stockpiling purposes. Loaders are primarily used for loading materials onto trucks or other vehicles and may not be as efficient in transporting large amounts of soil over long distances as scrapers. Draglines, while useful for digging in situations where a lot of earth needs to be moved, are often employed in larger-scale excavations and may not provide the efficiency needed for stockpiling soil on a