NPDES Construction Stormwater Permits in Florida: The CGP, SWPPP, and Notice of Intent (Chapter 62-621)
- Endless Life Design
- 1 hour ago
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Almost every sizable construction site in Florida discharges stormwater, and the state regulates that discharge through an NPDES permit that is separate from the site's drainage design. Missing it is one of the most common and most expensive oversights on a project. Endless Life Design builds the stormwater compliance into the plan before the first load of fill arrives.
TABLE OF CONTENTS
Why Construction Sites Need an NPDES Permit
The One-Acre Threshold
The SWPPP Comes First
Filing the Notice of Intent (Form 62-621.300(4)(b))
Permit Term, Transfers, and the Notice of Termination
How the CGP Differs From the ERP and Local Permits
Construction Dewatering
County and Municipality Inspection Comments for Permit Approval
Related Resources
Why Choose Endless Life Design
WHY CONSTRUCTION SITES NEED AN NPDES PERMIT
Under the State of Florida's authority to administer the federal NPDES stormwater program at Section 403.0885, Florida Statutes, operators with stormwater discharge associated with large or small construction activity to surface waters of the state, including through a Municipal Separate Storm Sewer System (MS4), must obtain coverage under either the generic permit in Chapter 62-621, F.A.C., or an individual permit under Chapter 62-620, F.A.C.
THE ONE-ACRE THRESHOLD
The Construction Generic Permit, or CGP, covers stormwater discharge from large and small construction activities. In practice, a project that disturbs one acre or more of land, or a smaller site that is part of a larger common plan of development or sale, needs coverage. Linear projects such as roads, pipelines, and utilities are included.
THE SWPPP COMES FIRST
A Stormwater Pollution Prevention Plan, or SWPPP, must be prepared before the Notice of Intent is filed — it is a condition of eligibility, not a later deliverable. The SWPPP identifies the best management practices, erosion and sediment controls, inspection schedules, and responsible personnel that keep sediment and pollutants out of state waters during construction.
FILING THE NOTICE OF INTENT (FORM 62-621.300(4)(B))
Coverage begins by filing a Notice of Intent on Form 62-621.300(4)(b), submitted through the DEP Business Portal using a PIN, with the processing fee. The NOI identifies the operator, the area of land disturbance, where the SWPPP can be viewed, the discharge location, and the estimated construction start and completion dates.
PERMIT TERM, TRANSFERS, AND THE NOTICE OF TERMINATION
CGP coverage runs for a five-year term and is not transferable. A new owner or operator must prepare a SWPPP and file a new NOI and fee. When you relinquish control of the project, you end coverage with a Notice of Termination within 14 calendar days. If the site discharged to a permitted MS4, send a copy of the Notice of Termination or acknowledgment to the MS4 operator within 7 calendar days.
HOW THE CGP DIFFERS FROM THE ERP AND LOCAL PERMITS
The Construction Generic Permit is separate from the Environmental Resource Permit and from any local government's stormwater discharge permit. A single project commonly needs all three: the ERP for the stormwater management system design, the CGP for the NPDES discharge during construction, and the local permit for municipal requirements.
CONSTRUCTION DEWATERING
Discharge to groundwater from dewatering is generally regulated through an industrial wastewater permit under Rule 62-621.300(2), F.A.C. The operator may instead cover dewatering of noncontaminated groundwater under the CGP if the criteria in Part 3.4.3 are met, generally where there is no known contamination within 500 feet, with appropriate dewatering BMPs noted in the SWPPP. Otherwise, coverage is obtained from the DEP district office.
COUNTY AND MUNICIPALITY INSPECTION COMMENTS FOR PERMIT APPROVAL
Common findings include:
No NPDES coverage on a site disturbing one acre or more.
SWPPP not prepared before the Notice of Intent was filed.
Erosion and sediment controls not installed or maintained per the SWPPP.
Notice of Termination not filed within 14 days of relinquishing control.
MS4 operator not notified within 7 days where required.
RELATED RESOURCES
WHY CHOOSE ENDLESS LIFE DESIGN
Endless Life Design is a licensed Florida general contractor serving Miami-Dade, Broward, and Palm Beach counties across construction, engineering, architecture, interior design, and 3D rendering. We coordinate state environmental, water-management, and building-department approvals as one accountable process, so your project advances from blueprint to certificate of occupancy without avoidable delay.
Endless Life Design — Licensed Florida General Contractor. Visit endlesslifedesign.com, call (305) 680-3283, or email endlesslifedesign@endlesslifedesign.com.
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