Where should rainfall records be maintained?

Maintaining rainfall records in a rain log as part of the Overall Stormwater Pollution Prevention Plan (OS-SWPPP) is essential because this log serves as an official document that tracks precipitation events specifically related to site conditions. The OS-SWPPP is a comprehensive plan required by regulations to manage stormwater and address erosion and sediment control at construction sites. By keeping rainfall data within this framework, inspectors and project managers can assess the effectiveness of erosion control measures, determine the timing of inspections, and analyze the relationship between rainfall events and potential stormwater issues.

This method of record-keeping ensures consistency and accessibility for compliance audits and monitoring, which are foundational to maintaining regulatory standards and safeguarding water quality. A centralized log within the OS-SWPPP allows for a streamlined approach to managing and responding to stormwater impacts effectively.

While digital databases, personal spreadsheets, or records kept in the main office can be useful, they may lack the context and structural integrity provided by being part of the OS-SWPPP. The primary focus must be on maintaining accurate, accessible, and official records that support compliance and effective stormwater management practices.