Protecting LID features during construction: Gallery

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  Protect LID inlets.

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  Avoid heavy equipment on infiltration areas (i.e., driving vehicles through filter beds, or over granular water storage and bedding layers). Identify and mark LID areas to increase awareness.

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  Phase construction so that LID measures are constructed last. Underground LID features can be built early in the construction process, provided they are protected by a barrier such as a plug.

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  Keep LID installations offline via flow diversion until construction is complete, the drainage area is stabilized, and vehicle mud tracking is stopped.

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  Be mindful of stockpile locations relative to LID areas.

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  Inspect LID areas during ESC site inspections

Low Impact Development. A stormwater management strategy that seeks to mitigate the impacts of increased urban runoff and stormwater pollution by managing it as close to its source as possible. It comprises a set of site design approaches and small scale stormwater management practices that promote the use of natural systems for infiltration and evapotranspiration, and rainwater harvesting.

Gravel, or crushed stone of various size gradations (i.e., diameter), used in construction; void forming material used as bedding and runoff storage reservoirs and underdrains in stormwater infiltration practices.

Refers to a system that when full, stormwater will bypass the practice. Offline systems use flow splitters or bypass channels that only allow the water quality volume to enter the facility. This may be achieved with a pipe, weir, or curb opening sized for the target flow, but in conjunction, create a bypass channel so that higher flows do not pass over the surface of the filter bed.

The total surface area upstream of a point on a stream that drains toward that point. Not to be confused with watershed. The drainage area may include one or more watersheds.