Stormwater Management Facilities Description

• General Site Description (Overview):
  • Overview that includes information such as how many BMPs, the general location of each BMP, the location of any BMP discharges, etc.
  • Reference to Site Plan in Appendix.
• Stormwater Management Facilities (for each BMP):
  • The function of BMP (i.e. water quality, flood attenuation, etc.).
  • Typical BMP features (i.e. perforated riser pipe surrounded by clean rock, outlet structure with multiple orifices, perforated underdrain, etc.).
  • Unique BMP features (i.e. less than 2% basin bottom slope, low flow channel, amended soil for infiltration, etc.).

Site Contacts and Requirements for Change of Ownership or Manual Revision

• List of site contacts.
• List of BMP owner(s).
• Specify how changes to the manual will be handled, including a requirement that City approval be required.
• Specify what is required if ownership changes, such as notifications given to the City.

Maintenance Procedures

• Routine Maintenance Activities, With Frequency
  • List expected routine activities such as, but not limited to:
    • Cutting grass every one to two weeks during April - September growing season.
    • Removal and disposal of trash and debris as needed but at least yearly.
    • Outlet pipes are kept free of any blockage on an ongoing basis, etc.
• Non-Maintenance Activities, With Frequency.
  • List expected non-routine activities such as, but not limited to:
    • Removal of sediment as needed.
    • Slope repair as needed.
    • Erosion repair as needed.
• Maintenance Materials (specifications for any components that might need to be replaced such as, but not limited to):
  • Storm sewer pipe material, class, and specification requirements such as:
    • Reinforced Concrete Pipe, Class III, ASTM C-76.
    • HDPE, AASHTO Designation M252 and M294.
  • Rip-Rap Rock with size requirement.
• Safety (General)
  • This should include statements such as, but not limited to:
    • Care should be taken when conducting maintenance activities.
    • Hazards should be anticipated and avoided.
    • Confined spaces should not be entered without proper training, monitoring and equipment.

Inspection Procedures

• This should include directions for the following, at a minimum:
  • An inspection shall be performed by a qualified individual familiar with the operation of the BMP facilities.
  • Inspections during the first year of operation will be required every {specify frequency, such as every three months} using the Inspection Checklist in Appendix.
  • Inspections after the first year of operation will be required {specify frequency, annually at a minimum} using the Inspection Checklist in Appendix, with inspection forms retained for {specify retention length, such as 10 years} from the inspection date.

BMP Waste Disposal

• Clarify what is considered BMP waste.
• Specify handling and disposal of BMP waste.
• Specify how water will be handled during any basin cleaning, as well as the handling and disposal of any sediment removed from the water or basin.

Appendices

Exhibits (at a minimum)

• Site Plan
• Accepted As-Built BMP Plan(s)

Forms and/or Checklists (at a minimum)

• Inspection Checklist (many examples are available online).