Changes

|rowspan="5"|'''[[Inlets|Inlet]]'''

|rowspan="5"|'''[[Inlets|Inlet]]'''

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|Inlet/Flow Spreader Structural Integrity

|Inlet/Flow Spreader structural integrity

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|Inlet/Flow Spreader Structural Integrity

|Inlet/Flow Spreader obstruction

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*Maintain 5 to 10 cm of mulch or stone cover to prevent weed growth and soil [[erosion]];

*Maintain 5 to 10 cm of mulch or stone cover to prevent weed growth and soil [[erosion]];

*Repair sunken areas when ≥ 10 cm deep and barren/eroded areas when ≥ 30 cm long;

*Repair sunken areas when ≥ 10 cm deep and barren/eroded areas when ≥ 30 cm long;

*Remove sediment when > 5 cm deep or time to drain water ponded on the surface exceeds 48 hours.

*Remove sediment when > 5 cm deep or time to drain water ponded on the surface exceeds 48 hours;

*Replace top 5 cm of filter media around inlets periodically (e.g., every 5 to 10 years) to maintain treatment performance.

|[[File:Filter bed bio pass.PNG|295px|thumb|center|There are no erosion gullies or bare soil areas on the filter bed surface and mulch cover remains in place.]]  

|[[File:Filter bed bio pass.PNG|295px|thumb|center|There are no erosion gullies or bare soil areas on the filter bed surface and mulch cover remains in place.]]  

|[[File:Filter bed bio fail.PNG|300px|thumb|center|Erosion gullies and bare soil areas are present on the filter bed surface, indicating that concentrated flow occurs regularly into the BMP feature. (Photo Source: CVC).]]  

|[[File:Filter bed bio fail.PNG|300px|thumb|center|Erosion gullies and bare soil areas are present on the filter bed surface, indicating that concentrated flow occurs regularly into the BMP feature. (Photo Source: CVC).]]  

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*Include [[Bioretention: Sizing|standpipes]] or access points to provide means of flushing the [[perforated pipe]];

*Include [[Bioretention: Sizing|standpipes]] or access points to provide means of flushing the [[perforated pipe]];

*Keep pipe and flow restrictor free of obstructions by flushing annually;

*Keep pipe and flow restrictor free of obstructions by flushing as needed;

*Inspect flow restrictor frequently (e.g., biannually to quarterly).

*Inspect flow restrictor frequently (e.g., biannually to quarterly).

|[[File:Underdrain bio pass.PNG|310px|thumb|center|The perforated sub-drain pipe is not obstructed by sediment, debris or roots and shows no signs of damage.]]  

|[[File:Underdrain bio pass.PNG|310px|thumb|center|The perforated sub-drain pipe is not obstructed by sediment, debris or roots and shows no signs of damage.]]  

==Tips to Preserve Basic BMP Function==

==Tips to Preserve Basic BMP Function==

*Maintain grading of the filter bed (or [[Vegetated filter strips|grass filter strip]] if present) at [[curb cut]] [[inlets]] so at least 5 cm of the back of the curb is visible through regular sediment removal and regrading.

*Maintain grading of the filter bed (or [[Vegetated filter strips|grass filter strip]] if present) at [[curb cut]] [[inlets]] so at least 5 cm of the back of the curb is visible through regular sediment removal and regrading.

*To avoid over-compaction of the [[Bioretention: Filter media|filter media soil]], any maintenance tasks involving vehicle or foot traffic on the filter bed should not be performed during wet weather.

*To avoid over-compaction of the [[Bioretention: Filter media|filter media soil]], any maintenance tasks involving vehicle or foot traffic on the filter bed should not be performed during wet weather.

*For bioretention with sod (i.e., [[Turf|turf grass]]) as [[vegetation]] cover, maintain with a push mower or the lightest mulching ride mower available and core aerate and dethatch annually in the spring to help maintain permeability.

*For bioretention with sod (i.e., [[Turf|turf grass]]) as [[vegetation]] cover, maintain with a push mower or the lightest mulching ride mower available and core aerate and dethatch annually in the spring to help maintain permeability.