Storm Water Quality

Construction & Post-Construction
Best management Practices

During construction projects Best Management Practices (BMPs) should be used to prevent soil and other pollutants from leaving the site and entering the City storm drain system. Permanent design features or post-construction BMPs reduce pollutants on an ongoing basis – and can reduce the amount of rain water running off the site on an ongoing basis.

This page provides links to information on these BMPs, the City’s Rules Relating to Water Quality regarding construction and post-construction BMPs, and certifications to meet the requirements set forth in the Rules.

Site Inspections

In accordance with the City’s NPDES permit, the City regularly inspects construction and post-construction projects. The City also inspects sites when complaints are filed or community concerns are reported and takes corrective action when necessary. Any business found discharging pollution or wastewater into the storm drain system may be issued a citation and may be subject to fines of up to $25,000.

Learn more about inspectors that visit construction sites to assess BMP practices: 

Who Are Your Storm Water Inspectors? 

Rules Relating to Water Quality

Click here to access the complete Rules Relating to Water Quality and other resources on the Department of Planning and Permitting website

Guides and Manuals

Web-Based Training Certification

Web-based Training Certification for

  • Erosion & Sediment Control Plans (ESCP)
  • Certified Environmental Storm Water Compliance Professional (CESCP)
  • Certified Water Pollution Plan Preparer (CWPPP)

Click here to learn more about these certifications and access the training portal.

IMPORTANT: Certification Expirations & Renewals

  • Certification is for one calendar year.
  • All ESCP Coordinator and CWPPP certifications issued prior to December 1, 2023 will expire December 31, 2023.
  • A one-month renewal grace period will be given to all ESCP Coordinators and CWPPs.
  • ALL Certifications will need to be renewed by January 31, 2024.
  • 2024 Certifications issued on after December 12, 2023 will be valid through December 31, 2024.

For questions regarding the Rules Relating to Water Quality or ESCP and CWPPP requirements, please call the Department of Planning and Permitting at 808-768-3141.

If you experience difficulties with the ESCP or CWPPP online training, call 808-440-0207.

Nānā ESCP Inspections Tool Tutorial Videos

The City introduces the NPDES Inspections tool, Nānā, aimed at recording stormwater inspections on construction sites to ensure ongoing compliance with Water Quality Rules. In its current public trial phase, usage is optional, but the tool is specifically crafted to effortlessly initiate and document inspections. It streamlines the process, promptly capturing inspection details, and shares the information with the City’s compliance monitoring team for thorough review.

Click here to access the Nana site.

For detailed guidance on using this tool, please refer to the provided videos.

For ESCP Coordinators

Setting Up Your Nānā Profile with Your ESCP Coordinator ID (03:17)

Creating the First Inspection for a Project (04:27) 

Adding Another Inspection to a Project (02:04)

Viewing Inspections (03:11) 

Sharing a Project with Another ESCP Coordinator and Requesting Projects (02:25)

Submitting a Letter of Compliance (01:23)

For Owners

Setting Up Your Nānā Profile and Signing as an Owner (03:46)

Submitting Letters of Authorization and Appendix A Forms (02:34)

For Contractors

Setting Up Your Nānā Profile and Uploading BMP Corrections (03:51)

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