If support activity areas are covered under the construction GP, what must the SWPPP include?

• A. No control measures are needed.
• B. Only noise control measures are needed.
• C. Only site security measures are needed.
• D. Control measures for those areas.

Answer: (D)

When support activity areas are covered under the construction GP, the SWPPP must include control measures for those areas because they can still contribute pollutants to runoff. The plan should specify the BMPs applicable to those spaces—such as spill prevention and response, proper storage and handling of fuels and chemicals, good housekeeping to keep debris and soils from escaping, secondary containment where needed, sediment and erosion controls around exposed soils, and proper waste management and vehicle/equipment maintenance practices. It also assigns responsibilities and timing for implementing these controls. Merely noting that no controls are needed or focusing on one narrow aspect would leave potential pollutant sources unmanaged and wouldn’t meet the permit’s requirements.