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3. Pits, pipes and inflow areas Section 1 Section 2 Maintenance Required? Yes No Maintenance Performed? Yes No Perforated pipes (CIRCLE – full blockage/partial blockage/damage) Inflow areas (CIRCLE – scour/excessive sediment deposition/litter blockage) Overflow grates (CIRCLE – damage/scour/blockage) Pits (CIRCLE – poor general integrity/sediment build-up/litter/blockage) Other stormwater pipes and junction pits (CIRCLE – poor general integrity/sediment build-up/litter/blockage) 4. Submerged zone Section 1 Section 2 Maintenance Required? Yes No Maintenance Performed? Yes No Weir/up-turned pipe (CIRCLE – full blockage/partial blockage/damage) Water level (CIRCLE – at design level/drawn down) SOME DRAWDOWN DURING DRY PERIODS IS EXPECTED 5. Additional Comments Biofiltration System Maintenance Plan - EXAMPLE 10
