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Line 18: **When designing stormwater infiltration BMPs, consideration should be given to where the majority of trash, sediment and debris will accumulate in the BMP and where snow storage will occur (a significant source area for sediment and debris).
Key Design and Plan Review Considerations (view source)
Revision as of 15:25, 21 June 2022
, 1 year ago→Design Low Maintenance Conveyance Systems
*[[Curb cuts]] should curve into the BMP so that flowing stormwater does not have to turn sharply to enter and inlets should be sloped at between 5 and 10%.
*[[Curb cuts]] should curve into the BMP so that flowing stormwater does not have to turn sharply to enter and inlets should be sloped at between 5 and 10%.
*[[Inlets]] should also be easily accessible and unobstructed by permanent covers to make trash, sediment and debris removal maintenance easy to perform.
*[[Inlets]] should also be easily accessible and unobstructed by permanent covers to make trash, sediment and debris removal maintenance easy to perform.
*When designing stormwater infiltration BMPs, consideration should be given to where the majority of trash, sediment and debris will accumulate in the BMP and where snow storage will occur (a significant source area for sediment and debris).
*Infiltration BMPs should include [[pretreatment]] devices, inlet designs or forebays that allow accumulation to occur without blocking inflow (e.g., 5 cm change in grade between pavement surface and BMP surface) and that isolate sedimentation areas from the main portions of the filter bed so that the area disturbed through routine sediment removal maintenance is minimized.
*Infiltration BMPs should include [[pretreatment]] devices, inlet designs or forebays that allow accumulation to occur without blocking inflow (e.g., 5 cm change in grade between pavement surface and BMP surface) and that isolate sedimentation areas from the main portions of the filter bed so that the area disturbed through routine sediment removal maintenance is minimized.
==Inspection & Maintenance Features==
During planning and design phases of an LID management plan, consideration for how they will be maintained (what equipment is needed, who is responsible for conducting maintenance, how often should said maintenance occur for a given LID BMP? etc.) and what features are needed to perform necessary inspection and maintenance tasks are all required questions to be answered by the municipality.
The following table provides some examples of inspection and maintenance features that should be considered in the BMP process: