Changes

*Remove trash, debris and sediment annually to biannually or when the device sump is half full;

*Remove trash, debris and sediment annually to biannually or when the device sump is half full;

*Measure sediment depth or volume during each cleaning, or annually to estimate accumulation rate and optimize frequency of maintenance

*Measure sediment depth or volume during each cleaning, or annually to estimate accumulation rate and optimize frequency of maintenance

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|[[File:Pretreatment pass bio.PNG|385px|thumb|center|[[Forebay]] is free of sediment, trash and debris and recently maintained. The large stones in the feature are used to slow down and spread out inflowing water into the feature and they remain well arranged and in place.]]

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|[[File:Pretreatment fail bio.PNG|400px|thumb|center|An erosion gully occurring where bare soil is starting to become visible on the [[Vegetated filter strips|grass filter strip]] pretreatment feature at the inlet, thus indicating it is not effectively slowing and spreading out the inflow of stormwater to the BMP.]]

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|'''[[Inlets]]'''

|'''[[Inlets]]'''