2325 75TH ST SE 2021-12-27 - Laserfiche WebLink

Maintenance Component: ,. Defect i '.. Conditions When Ma7ntenance Is Needed Results Expected When Maintenance Is per--.. donned' . (A percolation test pit ortest of facility indicates facility, is only working at 909A of its designed capabilities. Test every 2 to 5 years. If p : ; two inches or more sediment is present, remove). ' RfterBags(dapplicable) Fdiedwith Sediment and Sediment and debris fill bag more than 1/2full. Filter bag isrepl"tirsystemisredesigned. Debris ; Rock Filters Sediment and Debris By visual inspection, little orno waterflows; through flitertludng heavy rain storms.. Gravel in ruckfiltertri replaced: Side Slopes of Pond Erosion SeeTable V-A.1: Maintenance Standards- Detention Pcinds See Table V-A.1: MAtenance Standards- Deten- tion Ponds Tree Growth SeeTaMe V A.1: Maintenance Standards -Detention Ponds See Table V A 1. Maintenance Standards - Deten- Emergency Overflow Spil14. Lion Ponds and Berths over4 feet in height Piping See TableV-AA: Maintenance Standards -Detention Ponds See Table V-A 1: Mafnenance Standards - Deter Lion Ponds Rock Missing See TableV-A-1.MaintenanceStandards-DetentionPonds See Table V-A1:M✓3fntenanceStandards -Detem Emergency Overflow SprgwAr lion Ponds Erosion SeeTable V A 1: Maintenance Standards -Detention Ponds See Table V-A.1: Maintenance Standards - Deten- tion Ponds f Facility orsump filled ; Pre -settling Ponds and Vaull3 with Sediment and/or 6' or designed sediment trap depth of sediment. Sediment is remov4 debris s• Table V A.3: Maintenance Standards -Closed Detention Systems (TankslVaults) Maintenance '.' Defect. • • - Conditions When Maintenance is'Needed ' Resultt s. Expected When Maintenance is Per - Component formed Plugged Air Vents One Ralf of the cross section of a vent is blocked at any pant orthe vent Is damaged. Vents open and functioning. Accumulated sediment depth exceeds 10%.of the diameter of the storage -for 112length of storage vault orany point , Debris a6d Sediment depth exceeds 15% of diameter. All sediment soil debris removed from storage (Example:72-inch storagetank would require cleaning when sediment reaches depth of 7 inches formorethan 112length 'of area - StorageArea tank.) AnYopeningsorvoidsallirwingmaterialtobetransportedIntofaality. JoiMsBetweenTank/Pi Section - pe (MR require engineering analysis to determine sbuctuual stability).. All Joint between tank/pipe sections are sealed. Any pat of tank/pipe is bent out of shape more than 10% of fts design shape. (Review required by engineerto determine Tank Pi Bent Out of Shape � structural stabltty). Tatrk/plpe repaired or replaced to design. Cracks widerthan 1124nch and any evidence of soil particles entering the structure through the cracks, or main- Vault replaced or repaired to design spe- Vault Structure Includes Cracks in Wall. Bottom, tenanceBnspection personnel determines that the vault is not structurally sound. cifications and is structurally sound. Damage to Frame andlorTop Slab Cracks wider than 112 inch at the Joint of any irdef/outfet pipe or any evidence of so l particles entering the vault through the No cracks more than I WrichwideattheJoIntof walls the lydetfoudet pipe.