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1 Community Health Center <br /> No.22—Permeable Pavement <br /> Pavement type Defect Condition When Maintenance is Maintenance Action and Expected <br /> Needed Results <br /> All types Unstable soil on Runoff from adjacent areas deposits Remove deposited material from <br /> adjacent area soil,mulch,or sediment on permeable pavement,and stabilize adjacent areas so <br /> pavement that further deposition of material on <br /> pavement will not occur. <br /> Adjacent Vegetation impedes infiltration in Trim or remove vegetation so that <br /> vegetation is permeable pavement infiltration is not impeded <br /> covering <br /> permeable <br /> pavement <br /> Unwanted Unwanted vegetation impedes Remove unwanted vegetation,repair <br /> vegetation or infiltration in permeable pavement or permeable pavement as needed,replace <br /> moss is growing displaced desired vegetation desired vegetation as needed <br /> ) in or on <br /> permeable <br /> pavement <br /> None(routine N/A Vacuum or sweep according to <br /> maintenance) equipment manufacturer's specifications <br /> so that infiltration is not impeded <br /> Debris or Sediment or debris deposits are visible Remove sediment or debris and vacuum <br /> sediment on on pavement or sweep according to equipment <br /> pavement manufacturer's specifications so that <br /> infiltration is not impeded <br /> Infiltration Water ponds on pavement or runs off Vacuum or sweep according to <br /> capacity is pavement during rain events equipment manufacturer's specifications <br /> reduced so that infiltration is not impeded <br /> Settlement Settlement of pavement impedes Restore pavement to design grade <br /> infiltration <br /> Porous asphalt and Cracks in Pavement spalls or ravels at crack Patch or cut and replace the affected area <br /> pervious concrete pavement edges with paving material similar to the <br /> original pavement. Replace in-kind <br /> where feasible. Porous asphalt may be <br /> replaced with conventional asphalt if it is <br /> a small percentage of the total permeable <br /> pavement area and does not impact the <br /> overall permeable pavement function. <br /> Permeable pavers Paving block Paving block missing or damaged Repair or replace missing or damaged <br /> missing or pavers according to manufacturer's <br /> damaged specifications <br /> Open-celled paving Paving grid Three or more adjacent ringsin paving Repair or replace missing or damaged <br /> grid missing or grid missing or damaged paving grid according to manufacturer's <br /> damaged specifications <br /> Loss of Loss of aggregate in paving grid Replenish aggregate material in grid to <br /> aroregate inmanufacturer's specifications <br /> paving grid <br />• Poor/missing Poor/missing grass in vegetated Replace growing medium in grid,replant <br /> grass in paving grid or reseed with grass <br /> vegetated <br /> paving grid <br /> Pipe inlet/outlet/ Pipe system is Flow does not pass as designed Clean or repair pipe system to restore <br /> underdrain system blocked or through pipe system design flow capacity <br />• damaged <br /> WESTERN ENGINEERS,INC. 14 PROJECT:17-1688-A <br />