Storm Water Pollution Prevention Plan (SWPPP) Practice Test

Which of the following is considered a pollutant source on a construction site?

1. Concrete mixer

2. Masonry material

3. Standard office supplies

4. General waste containers

The correct answer is: Masonry material

The correct answer, masonry material, is considered a pollutant source on a construction site because it can contribute to water pollution if it is not managed properly. When masonry materials such as bricks, mortar, or tiles are disturbed or installed, they can produce dust and debris that may wash away with rainwater. If these materials enter stormwater runoff, they can contribute to sedimentation in local waterways, impacting water quality and aquatic habitats. In contrast, while a concrete mixer can also be a potential source of pollutants, it is typically not categorized in the same way as masonry materials. Office supplies generally do not contribute to both physical pollution and sedimentation; they might not pose any significant environmental risk. General waste containers may contain waste, but if properly managed and closed, they are not necessarily considered direct pollutant sources. Hence, masonry materials are more directly associated with the types of pollution concerns typically addressed in a Storm Water Pollution Prevention Plan (SWPPP).