Stormwater Resources for Development

Guidelines + Checklists

General Construction Plan Guidance

• • Inlet Sizing Chart Based on Pipe Deflection Angle
  • Rip Rap Sizing Chart Based on Outlet Velocity

Stormwater Management

• • Stormwater Management Studies
  • Private Lake Agreement
• Detention Maintenance Agreement

Stream Corridors

• • Stream Corridor Maintenance Agreement

Stormwater Treatment Facilities

All new development and redevelopment projects are subject to municipal code requirements for stormwater treatment. The purpose of this requirement is to minimize and prevent the discharge of pollutants from developed land into the surface waters of the city through the treatment of stormwater runoff. Stormwater treatment facilities are constructed as part of a site development, building, or public improvement permit.

• • Stormwater Treatment Facilities Construction Plan Review Checklist
  • Stormwater Treatment Facility Drawing Requirements
  • Stormwater Treatment Facility Maintenance Agreement for Homeowner or Business Associations
  • Stormwater Treatment Facility Maintenance Agreement for Single Owner

Erosion + Sediment Control

All construction activity resulting in land disturbance is required to comply with the city’s erosion and sediment control ordinance.

In addition, construction activity disturbing one or more acres must obtain permit coverage from the Kansas Department of Health & Environment. Permit coverage requires the development of a stormwater pollution prevention plan.

• APWA 5100
• Concrete Washout
• Kansas Department of Health & Environment Construction Stormwater Program
• Erosion and Sediment Control Standards

Floodplain Development

Any work within FEMA’s 100-year floodplain requires a floodplain development permit.  This is a supplemental permit that is processed as part of an existing construction permit.

Refer to the floodplain map to determine if your project is within the regulated floodplain.

Certifications + Sureties

Erosion + Sediment Control Surety

Applicants of standalone land disturbance or site development permits disturbing more than one acre must submit a refundable erosion and sediment control surety before a the City will issue a building permit. Submit this surety in the form of a check or letter of credit.

• Irrevocable Letter of Credit

Detention Plans

• • Certificate of Completion and Compliance for Stormwater Detention (Flood Control) Facilities
  • Flood Control Detention Model Procedures

Stormwater Treatment Facilities

The owner or developer must provide an initial certification of completion and compliance for all constructed stormwater treatment facilities, and submit a recertification one year after construction is completed, and every two years thereafter. A professional engineer licensed in the state of Kansas must perform the certification unless the Director approves other qualified individuals to perform the certification.

Stormwater treatment facility performance sureties, in the form check or letter of credit, are required for applicable projects before a construction permit will be issued.

A maintenance surety and initial stormwater treatment facility certification are required before the City will release the performance surety or issue a certificate of occupancy.

• Irrevocable Letter of Credit
• Maintenance Bond

Initial Certificate of Completion and Compliance

• • Bioretention Cells Special Inspection Form
  • Construction Inspection Log - Initial Certification of Stormwater Treatment Facilities
  • Extended Detention Wetlands Special Inspections Form
  • Extended Dry Detention Basins Special Inspection Form
  • Extended Wet Detention Ponds Special Inspections Form
  • Infiltration Basins Special Inspections Form
  • Infiltration Trenches Special Inspections Form
  • Native Vegetation Swales Special Inspections Form
  • Permeable Pavement Special Inspections Form
  • Rain Gardens Special Inspections Form
  • Sand Filters Special Inspections Form
  • Vegetated Filter Strips Special Inspections Form

Recertification Forms

• Recertification Form
• Bioretention Cell Inspection Report
• Extended Detention Wetland Inspection Report
• Extended Dry Detention Inspection Report
• Extended Wet Detention Inspection Report
• Infiltration Basin Inspection Report
• Infiltration Trench Inspection Report
• Native Vegetation Area Inspection Report
• Native Vegetation Swale Inspection Report
• Permeable Pavement Inspection Report
• Proprietary Unit Inspection Report
• Rain Garden Inspection Report

Legal Agreements

City staff will review all plans for approval along with required supporting reports, studies, or documents.

Revisions and changes to City agreements and easements may increase review time.

Submit draft legal agreements for review online via ePLACE prior to obtaining owner signatures. You must submit original signed legal agreements before City staff will issue permits.

Agreements + Easements

• Detention Maintenance Agreement
• Private Lake Agreement
• Right of Way Maintenance Agreement (New Development)
• Stormwater Treatment Facility Maintenance Agreement – Homeowner/Business Association
• Stormwater Treatment Facility Maintenance Agreement – Single Owner
• Stream Corridor Maintenance Agreement
• • Permanent Drainage Easement
  • Permanent Maintenance Access Easement
  • Sidewalk Easement
  • Temporary Construction Easement
  • Utility Easement

Related Resources

• APWA Section 5600-Storm Drainage Systems and Facilities
• Manual for Best Management Practices for Stormwater Quality
• City of Overland Park Design and Construction Standards Manual
• National Pollution Discharge Elimination System