Which of the following is a common method of dewatering in Florida that produces relatively clean water?

The well point method is a widely used dewatering technique in Florida that effectively removes groundwater from construction or excavation sites while producing relatively clean water. This technique involves installing a series of pipes (well points) in the ground, which are connected to a vacuum system. By creating a vacuum, water is drawn up from the saturated soil through these well points and into a collection system.

Well point systems are particularly beneficial in sandy soils, common in Florida, as they allow for efficient water removal without disturbing the surrounding ground significantly. The water collected through this method tends to have fewer sediments and contaminants because it is drawn directly from the aquifer and is less influenced by surface runoff or other potential sources of contamination.

In contrast, other methods like gravity drainage or open ditching might not yield as clean water, as they can introduce sediment and debris from the surface or allow for runoff, which may carry pollutants. Surface runoff, in particular, is influenced by various environmental factors and is often laden with sediment and other contaminants. Thus, the effectiveness of the well point method makes it the preferred choice for achieving relatively clean water during dewatering operations in Florida.