What is the purpose of a pollutant source inventory in a SWPPP?

The purpose of a pollutant source inventory in a Stormwater Pollution Prevention Plan (SWPPP) is to identify and evaluate all possible sources of pollutants on-site. This step is crucial for understanding the various elements that can contribute to stormwater pollution, including potential contaminants from different activities, materials, and operational processes. By conducting a comprehensive inventory, facilities can pinpoint specific areas that might lead to water quality issues and can subsequently develop targeted strategies to manage and mitigate these risks effectively. Recognizing all possible sources allows for a robust approach to pollution control and ensures compliance with environmental regulations. This foundational step enables better planning for preventative measures and monitoring protocols, which ultimately supports the goals of the SWPPP in protecting water quality.