Schedule a Miami-Dade Stormwater and SFWMD Environmental Resource Permit 2026 — ERP, NPDES, Exfiltration Trench and Retention Pond Services

Ready to schedule a Miami-Dade stormwater and SFWMD Environmental Resource Permit (ERP) in 2026? Endless Life Design schedules same-week stormwater and water management permits for new development ERP, modification ERP, conceptual ERP, exfiltration trench design, retention pond and wet detention construction, dry detention basins, swale and bioretention systems, permeable paver installations, green roofs and stormwater capture, NPDES Construction General Permit, NPDES Multi-Sector General Permit for industrial sites, and Right-of-Way Drainage Connection Permits across all 34 Miami-Dade municipalities. Schedule your environmental permits today through our licensed civil engineering team near you.

Florida Administrative Code 62-330 Environmental Resource Permit — required for any activity that disturbs more than 1 acre, alters surface water flow, or impacts wetlands. Government brochures occasionally cite 5 acres or 10 acres — corrected current 62-330 threshold is 1 acre for general permit triggers. Conceptual ERP for master-planned developments at $4,850 USD to $48,000 USD. Individual ERP for site-specific construction at $1,850 USD to $14,500 USD. SFWMD reviews ERP for the South Florida region; FDEP retains some categories.

ERP design criteria — Miami-Dade County requires retention or treatment of the first 1 inch of runoff (or 2.5 inch in some sensitive areas) plus volume control to match pre-development discharge rates. Discharge calculations using the Modified Rational Method or NRCS TR-55 methodology for design storms of 10-year, 25-year and 100-year 24-hour rainfall events. Government brochures occasionally cite 25-year peak as governing — corrected 62-330 standard requires showing no increase in post-development discharge from pre-development for the design storm hierarchy.

Exfiltration trench — Miami-Dade's most common stormwater BMP given the high water table and limited surface area for retention ponds. Exfiltration trench consists of perforated pipe in graded aggregate trench, typically 4 to 6 feet deep, with filter fabric wrap and stone backfill. Capacity calculation based on saturated hydraulic conductivity of underlying soil (typically 4 to 12 feet per day in Miami oolite limestone). Trench cost $25 USD to $85 USD per linear foot. Typical commercial site requires 200 to 2,000 linear feet of trench.

Retention pond and wet detention — surface ponds with permanent pool depth typically 4 to 8 feet, side slopes 4 horizontal to 1 vertical maximum, littoral shelf at 6 to 12 inches below normal water level for vegetation establishment, and outfall structure with overflow weir and bleed-down orifice for treatment volume drawdown. Pond cost $4,850 USD to $48,000 USD depending on size. Stormwater volume typical 0.5 to 2 acre-feet per acre of contributing area.

Wetland delineation and mitigation — wetland boundary determination by qualified consultant using Florida Unified Wetland Delineation Methodology (FUWM) at $4,850 USD to $24,500 USD depending on site complexity. Wetland impact mitigation under Florida Statute 373.4135 and federal Clean Water Act Section 404 typically at 2 to 5 to 1 ratio (replace 1 acre impact with 2 to 5 acres creation, enhancement or preservation) at $50,000 USD to $500,000 USD per acre mitigated. Mitigation banking allows purchase of credits from approved banks like Loxahatchee Mitigation Bank.

NPDES Construction General Permit (CGP) — federal Clean Water Act permit required for any construction site disturbing 1 acre or more. NPDES CGP issued by FDEP under EPA delegation. Annual fee $400 USD. Stormwater Pollution Prevention Plan (SWPPP) preparation at $1,850 USD to $4,850 USD with Best Management Practices (BMP) including silt fence, inlet protection, stabilized construction entrance, dust control, and final stabilization. Weekly inspections during construction at $185 USD to $385 USD per inspection by qualified Stormwater Inspector.

NPDES Multi-Sector General Permit (MSGP) — for industrial facilities with stormwater discharge exposed to industrial activity. Annual fee $400 USD plus annual report. SWPPP preparation at $4,850 USD to $14,500 USD with industrial-specific BMPs.

Miami-Dade DERM stormwater — local stormwater permit through DERM at $485 USD to $1,850 USD with review concurrent or in lieu of SFWMD for smaller sites. Maintenance agreement recorded against property for ongoing stormwater system maintenance.

DERM Pollution Regulation Division — additional review for sites with potential or actual contamination, fuel storage, industrial wastewater, or chemical handling. Phase I ESA at $4,850 USD to $14,500 USD identifies recognized environmental conditions. Phase II ESA at $14,500 USD to $48,000 USD confirms contamination.

Wellfield protection zones — Chapter 24-12 establishes 200-foot, 1,000-foot, and 1,400-foot zones from municipal wellfields with prohibited and restricted uses, enhanced stormwater treatment, and contamination prevention. Construction in wellfield zones requires Wellfield Protection Plan at $485 USD to $4,850 USD.

Florida Keys nutrient management — Miami-Dade County southern portions and Monroe County adjacent areas have enhanced nutrient management for protection of Florida Reef Tract and Florida Keys Marine Sanctuary. Discharge limits 10 mg/L total nitrogen and 1 mg/L total phosphorus.

CCCL coastal stormwater — properties east of Coastal Construction Control Line require sea turtle lighting compliant outdoor lighting (amber LED, fully shielded) and may require enhanced erosion control for dune protection.

Sunshine 811 mandatory before any excavation for trenches, retention ponds, or stormwater piping. Striking buried utility triggers $20,000 USD damage plus emergency repair.

Tree protection at specimen tree dripline. Mature trees beneficial for stormwater function and may be incorporated into bioretention design.

Permits expire 180 days for construction permits, ERP duration 5 to 20 years depending on type. Reinspections $185 USD each. Survey 12 months, $800 USD to $8,500 USD to renew. Three licensed civil engineers (especially water resources experienced) as backup essential. Government fee invoices audited and appealed. Never accept early start. Notice of Commencement before first excavation, Notice of Termination within 30 days. Civil and environmental contractors must hold Florida DBPR Certified License, $2,000,000 USD liability minimum, workers compensation, current Miami-Dade local business tax. Unpaid contractors file liens within 90 days. Schedule your Miami-Dade stormwater and SFWMD Environmental Resource Permit today.