There are 26,857 Inlet structures within the City. The performance target for inspection and cleaning is 3,840 per year (320 per month). Debris, sediment, and vegetation are removed and transported to a facility for processing. Additionally, the structure type, size, location and its condition are documented to determine necessary repair and restoration projects. This work is conducted primarily by in-house resources and is done to reduce flooding and enhance water quality.
Included in the infrastructure totals for inlet structures are the City’s baffle boxes. Baffle boxes are concrete structures containing a series of sediment settling chambers separated by baffles. The primary function of baffle boxes is to remove sediment, suspended particles, and associated pollutants from stormwater. Baffle boxes can also capture larger materials, trash, and floatables. The City’s baffle boxes are maintained by a contract on a quarterly basis.