Which of the following would be a key indicator of a successful SWPPP?

A key indicator of a successful Storm Water Pollution Prevention Plan (SWPPP) is the reduction of stormwater pollution at the site. This directly reflects the effectiveness of the practices and controls that have been implemented to manage stormwater runoff and minimize pollution. The primary purpose of a SWPPP is to prevent contaminants from entering water bodies during construction or development activities, so seeing a measurable decrease in stormwater pollutants signifies that the plan is working as intended.

The success of a SWPPP can be assessed through various indicators, but the ultimate goal is to protect water quality by mitigating the impact of stormwater runoff. Effective implementation of best management practices, staff training, regular inspections, and monitoring can all contribute to achieving this reduction. Thus, monitoring environmental outcomes, specifically the quality of stormwater discharges, is a crucial aspect to determine the success of SWPPP activities.