Core Environmental Consulting will collect and organize facility information, create or update a Stormwater Management Plan, develop and implement outreach and training protocols, perform inspections and recordkeeping, and complete annual reporting.

The Municipal Storm Water Program regulates storm water discharges from municipal separate storm sewer systems (MS4s) throughout California. U.S. EPA defines an MS4 as a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains) owned or operated by a State (40 CFR 122.26(b)(8)).

Pursuant to the Federal Water Pollution Control Act (Clean Water Act) section 402(p), storm water permits are required for discharges from an MS4 serving a population of 100,000 or more. The Municipal Storm Water Program manages the Phase I Permit Program (serving municipalities over 100,000 people), the Phase II Permit Program (for municipalities less than 100,000), and the Statewide Storm Water Permit for the State of California Department of Transportation. The State Water Resources Control Board (State Water Board) and Regional Water Quality Control Boards (collectively, the Water Boards) implement and enforce the Municipal Storm Water Program.

Each MS4 permittee must prepare, submit, implement, document, and regularly update a Stormwater Management Plan (SWMP) for its permitted facilities. MS4 requirements are complex, rapidly evolving, and often difficult to implement when combined with all of your other operations. We can help you prepare and update compliant documents, perform regular inspections and maintenance, train staff and facility users, and conduct public outreach.