What methods are used to manage non-stormwater discharges on construction sites?

The management of non-stormwater discharges on construction sites primarily involves the use of various sediment control methods that effectively capture and manage sediment-laden runoff. Sediment traps and basins, along with weir tanks, are specifically designed to control sedimentation, allowing for the settlement of particles from water before it is discharged. These practices are critical for reducing pollution and minimizing environmental impact during construction activities, which can generate a significant amount of sediment runoff.

Sediment traps are often temporary structures that enable the collection of sediment from runoff, allowing the water to flow through while retaining larger particles. Similarly, sediment basins provide a larger area for sediment to settle out of the water column. Weir tanks can be employed to regulate the flow of water and facilitate sedimentation. By effectively managing these discharges, the construction site minimizes harm to nearby water bodies and ecosystems.

Other options, while relevant to stormwater management, do not specifically target non-stormwater discharges in the same manner. For example, silt fences and biofilters primarily address the control of sediment prior to runoff, whereas wetlands and rain gardens are more suited for natural filtration and management of stormwater rather than non-stormwater discharges. Permeable pavements, while useful for