Changes

|'''Maintenance sediment storage depth and volume'''

|'''Maintenance sediment storage depth and volume'''

|The maintenance sediment storage depth/volume represents the storage depth/volume available for sedimentation either on top of the media filter or within the chamber housing the filter cartridges and pretreatment chamber(s) (if applicable), as recommended by the manufacturer and confirmed through field testing.  The sump depth is constant across different unit sizes, but the sump volume increases in relation to the effective filtration area, as per the scaling rule noted above.

|The maintenance sediment storage depth/volume represents the storage depth/volume available for sedimentation either on top of the media filter or within the chamber housing the filter cartridges and pretreatment chamber(s) (if applicable), as recommended by the manufacturer and confirmed through field testing.  The sump depth is constant across different unit sizes, but the sump volume increases in relation to the effective filtration area, as per the scaling rule noted above.

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The recommended maintenance frequency must adhere to the findings in the field test report or be shown through detailed design calculations to meet the approval agency maintenance interval requirements, with a buffer of safety added for uncertainties in site specific sediment, gross solids and debris loads.  MTD inspections may need to be more frequent at sites where the site runoff quality is likely to lead to faster clogging of system filtration components than was observed in the field test.  Some runoff quality parameters that may enhance [[clogging]] potential relative to the field test results may include the presence of a larger mass of finer particles (silts and clays), higher organic matter content or hydrocarbon loading, and higher bacterial loads, which can enhance the development of biofilms.

The recommended maintenance frequency must adhere to the findings in the field test report or be shown through detailed design calculations to meet the approval agency maintenance interval requirements, with a buffer of safety added for uncertainties in site specific sediment, gross solids and debris loads.  MTD inspections may need to be more frequent at sites where the site runoff quality is likely to lead to faster clogging of system filtration components than was observed in the field test.  Some runoff quality parameters that may enhance [[clogging]] potential relative to the field test results may include the presence of a larger mass of finer particles (silts and clays), higher organic matter content or hydrocarbon loading, and higher bacterial loads, which can enhance the development of biofilms.

==References==

==References==