Concrete, stucco, plaster and grout that enters creeks and other waterways is harmful to aquatic life. The lime found in these materials easily dissolves in water, just like sugar. This lime is so alkaline (high in pH) that it is deadly to the fish and critters that live in our creeks. Concrete waste can also block or obstruct storm drain pipes and cause local flooding. For these reasons, it's very important to use Best Management Practices (BMPs) in order to prevent these materials from entering storm drains, ditches, and creeks.
Remember that you are responsible for the actions of contractors and other people assisting with the work. Be sure to discuss the BMPs below with workers to avoid illicit discharges and enforcement actions, such as fines, civil penalties and stop work notices, by local, state and federal agencies.
1. Planning Ahead
2. Cleaning Up
4. Report Illicit Discharges