Changes

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==Tips to Preserve Basic BMP Function==

==Tips to Preserve BMP Function==

*As the capacity of filter media to retain pollutants is finite, periodic replacement of filter media at inlet locations should be considered as an operation and maintenance best practice to maintain treatment performance.

*As the capacity of filter media to retain pollutants is finite, periodic replacement of the top 5 cm of filter media at inlet locations should be considered as an operation and maintenance best practice to maintain treatment performance.

*Because the risk of compaction is higher when topsoil is saturated, any maintenance tasks involving vehicle (e.g., ride mower) or foot traffic on the filter bed should not be performed during wet weather.

*Because the risk of compaction is higher when topsoil is saturated, any maintenance tasks involving vehicle (e.g., ride mower) or foot traffic on the filter bed should not be performed during wet weather.

*Use push mower to maintain enhanced swales with [[grasses]] as [[vegetation]] cover or the lightest ride mower equipment available to minimize compaction of the filter bed.

*Use push mower to maintain enhanced swales with [[grasses]] as [[vegetation]] cover or the lightest ride mower equipment available to minimize compaction of the filter bed.

*Add [[Level spreaders|flow spreading device]] or re-grade existing device back to level. Rake to regrade damaged portion of the filter bed and replant. If problem persists, replace some [[vegetation|plant]] cover with [[stone]].

*Add [[Level spreaders|flow spreading device]] or re-grade existing device back to level. Rake to regrade damaged portion of the filter bed and replant. If problem persists, replace some [[vegetation|plant]] cover with [[stone]].

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| rowspan="3"|'''[[Swales: Construction|Filter Bed]]'''

| rowspan="3"|'''[[Bioretention: Filter media|Filter Bed]]'''

|Local or average sediment accumulation ≥ 5 cm in depth.

|Local or average sediment accumulation ≥ 5 cm in depth.

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