The City installs "full trash capture devices" in storm drains to prevent trash and debris from entering our waterways during rain events. These devices, located in storm drain catch basins or underground as part of the storm drain system, catch trash before it flows into creeks or the Bay.
The City has three large full trash capture devices, known as hydrodynamic separators (HDS), installed underground and connected directly to the storm drain pipes. They help capture trash, sediment, and some pollutants. While HDS units are more expensive to install, they can capture more material and need less maintenance than smaller devices.
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A large trash capture device on Embarcadero Road in front of the Baylands Golf Links. |
The City has one small full trash capture device installed in a storm drain catch basin along the street to prevent trash and debris from being washed into the storm drain system.
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A connector pipe screen (CPS), a type of small device, installed in a catch basin. |