Control Structure Manhole
Maintaining your control structure manhole requires a confined space certification and must be done by professionals. Control structures, also called flow restrictors, meter the release of stormwater from a facility at a specific rate. This helps to reduce erosion in local streams during rain events.
What you'll need:
DO NOT attempt to maintain your control structure yourself. Contact a professional with confined space certification. Find a list of professionals here.
The following steps shown are for educational purposes only. A professional should:
Use a lit puller to remove the manhole lid for inspection.
Measure the sediment levels of the sump and pump to remove, if needed.
Inspect infrastructure inside structure and repair as needed.
Reinstall manhole lid and provide you with a report of maintenance performed.
Facilities commonly associated with control structure manholes: