Appendix F Maintenance Inspection Checklists

Transcription

1 ppendix F aintenance Checklists This appendix contains four checklists available as guides for maintenance inspections of specific BPs. The maintenance items have been adapted from multiple stormwater programs, including the Rouge River Detention Basin aintenance anual, Georgia Stormwater anagement anual, the Vermont Stormwater anagement anual, and the Stormwater anager s Resource Center. The checklists are designed to help identify key components of BPs that require ongoing maintenance as well as a basic schedule of when the maintenance should occur. The checklists have been divided into those items essential for the general operation and functionality of the BP and those items that optional and may enhance the BP. It is suggested that the inspection be undertaken by a licensed PE and/or a person knowledgeable about the design and function of the BP. These BP checklists include: Detention (ponds, basins, wetlands) Infiltration (basins, trenches) Bioretention Bioswales, vegetated filter strips LID anual for ichigan ppendix F Page 445

2 Detention BP Checklist* Project Location: Date/Time: Inspector: aintenance Item Inlet/Outlet Pipes Structural integrity of inlet/outlet (re any inlet pipes broken, crumbling, separated?) List Inlet Pipes pproximate Diameter and Type of aterial Inlet Pipe 1 Inlet Pipe 2 Inlet Pipe 3 Outlet Pipe Size/Type Riprap at inlet pipe (Is the riprap still present? Is it visible and not covered with sediment? Stone around outlet pipe (Is the stone clogged with debris and/or sediment?) Trash or debris blocking inlet/outlet (Inspect to ensure no major obstructions hindering general functionality) Inspect/clean catch basin upstream of the BP if accessible. Inspect inlets and outlet for erosion (re there eroded areas around the pipes?) Inspect overflow spillway for signs of erosion. Pretreatment (if applicable) (ight include sediment forebay, upstream catch basin, bioswale, rain garden, swirl concentrator) Device functioning to trap/collect sediment Remove accumulated sediment as appropriate for the pretreatment device. forebay Detention Pond frequency key = nnual, = onthly, S = fter major storm *It is recommended to review and inspect the basin with the engineering as-built plans. LID anual for ichigan ppendix F Page 446

3 aintenance Item Inspect side slopes, berms and emergency overflow for erosion Reestablish permanent native vegetation on eroded slopes s needed Inspect for excess sediment accumulation in pond if not pretreatment device is present Overall functionality Ensure pond is functioning properly (Professional Civil Engineer is recommended) Ensure the outlet is functioning properly (Professional Civil Engineer is recommended) Optional/Enhancements aintain feet no mow and chemical free zone ow (or burn) the no mow zone Inspect basin and no mow zone for invasive species. Qualified professional applicator selectively herbicide invasive species Increase plant diversity by planting additional vegetation in and around pond. Complaints from residents (note on back) S Encroachment on pond/no- mow zone. Unauthorized plantings esthetics (e.g., graffiti, unkept maintenance) frequency key = nnual, = onthly, S = fter major storm *It is recommended to review and inspect the basin with the engineering as-built plans. Summary Inspector s remarks: Overall condition of facility (acceptable or unacceptable): Dates any maintenance must be completed by: frequency key = nnual, = onthly, S = fter major storm *It is recommended to review and inspect the basin with the engineering as-built plans. LID anual for ichigan ppendix F Page 447

4 Infiltration BPs Checklist* Project Location: Date/Time: Inspector: aintenance Item Inlet/Outlet Structural integrity of inlet/outlet Inlet/outlet clear of debris Overflow spillway clear of debris Erosion control at inlet in place (e.g., rock, mat)/ evidence of erosion Erosion control at outlet in place/evidence of erosion Inspect/clean catch basin upstream of BP Pretreatment for sediment Device functioning to trap sediment Remove accumulated sediment Overall functionality Ensure infiltration device is functioning properly (professional civil engineer is recommended) BP infiltration surface ny evidence of sedimentation in BP Does sediment accumulation currently require removal Debris in BP S Evidence of erosion present ggregate (if applicable) Surface of aggregate clean ny replacement of aggregate needed? If clogged with sediment replacement is necessary for continued proper function. frequency key = nnual, = onthly, S = fter major storm LID anual for ichigan ppendix F Page 448

5 aintenance Item Vegetated surface (if applicable) Vegetative cover exists Optional considerations Inspect BP for invasive species. Qualified professional applicator selectively herbicide invasive species Increase plant diversity by planting additional vegetation or creating a native plant infiltration basin area. Complaints from residents (note on back) owing done when necessary No fertilizer unless testing requires it frequency key = nnual, = onthly, S = fter major storm Summary Inspector s remarks: Overall condition of facility (acceptable or unacceptable): Dates any maintenance must be completed by: LID anual for ichigan ppendix F Page 449

6 Bioretention Checklist* Project Location: Date/Time: Inspector: aintenance Item Inlet/Outlet Structural integrity of inlet/outlet Inlet/outlet clear of debris Overflow spillway or catch basin clear of debris Erosion control at inlet in place (e.g., rock, mat)/ evidence of erosion Erosion control at outlet in place/evidence of erosion Inspect/clean catch basin upstream of BP Every 5 years Pretreatment for sediment (Generally consists of catch basin or velocity dissapator at inlet such as area of riprap/ collection for sediment) Device functioning to trap sediment Remove accumulated sediment Overall functionality Ensure bioretention area is functioning properly (professional civil engineer is recommended) Bioretention area surface ny evidence of sedimentation in BP Does sediment accumulation currently require removal Debris in BP Evidence of erosion present Does good vegetative cover exist ulch covers entire area (no voids) and to specified thickness Optional considerations Inspect BP for invasive species. frequency key = nnual, = onthly, S = fter major storm LID anual for ichigan ppendix F Page 450

7 aintenance Item Qualified professional applicator selectively herbicide invasive species Increase plant diversity by planting additional vegetation Complaints from residents (note on back) frequency key = nnual, = onthly, S = fter major storm Summary Inspector s remarks: Overall condition of facility (acceptable or unacceptable): Dates any maintenance must be completed by: LID anual for ichigan ppendix F Page 451

8 Bioswale, Filter Strip Checklist Project Location: Date/Time: Inspector: aintenance Item Inlet/Outlet Structural integrity of inlet/outlet Inlet/outlet clear of debris Pretreatment/ Energy Dissipators No evidence of flow going around structures No evidence of erosion Device functioning to trap sediment Remove accumulated sediment BP surface rea free of debris? No evidence of erosion Does sediment accumulation currently require removal? Overall functionality frequency key = nnual, = onthly, S = fter major storm LID anual for ichigan ppendix F Page 452

9 aintenance Item Ensure swale is functioning properly (professional civil engineer is recommended) Optional Considerations Inspect BP for invasive species. Qualified professional applicator selectively herbicide invasive species Increase plant diversity by planting additional vegetation Complaints from residents (note on back) frequency key = nnual, = onthly, S = fter major storm Summary Inspector s remarks: Overall condition of facility (acceptable or unacceptable): Dates any maintenance must be completed by: LID anual for ichigan ppendix F Page 453