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Key Design and Plan Review Considerations (view source)
Revision as of 20:42, 23 November 2022
, 1 year ago→Design Low Maintenance Conveyance Systems
*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).
*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.
*Designing LID practices and treatment trains as being part of the minor drainage system only is another strategy that helps control operation and maintenance costs. Designing conveyance systems such that during major storm events, once the storage capacity of the LID practice or treatment train of practices has been exceeded, flows are directed to the major drainage system avoids the need for protective features to safely convey high flows through the practice or treatment train, and their associated maintenance.
==Inspection & Maintenance Features==
==Inspection & Maintenance Features==