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Envicon Group
1–2 Week SWPPPs
Starting at $2,500
NJDEP & NYC DEP Compliant

Stormwater Management & SWPPP
Permit-ready plans that don't delay construction.

SWPPP preparation, stormwater management design, and green infrastructure for construction and industrial sites across NJ, NYC, and the Hudson Valley — engineered around agency review preferences so you get to NOI faster.

Licensed P.E. on Staff NJDEP RSIS Certified NYC DEP Unified Rule 4.9 Google Rating

Where Stormwater Delays Projects

Ground-Disturbance Triggers

Missing the one-acre trigger (or a common plan of development) can pause construction while you scramble to prepare a SWPPP and file the Notice of Intent.

Post-Construction Rules

NJDEP Ch. 8 and NYC DEP's unified stormwater rule govern water quality, quantity, and groundwater recharge. Late-stage redesigns for compliance are the most expensive fix.

Green Infrastructure Credits

Agencies increasingly prioritize green infrastructure for water quality credits. Getting the ratio right early can free up developable acreage and reduce O&M cost.

Stormwater Services

From construction-phase SWPPPs through post-construction green infrastructure, one P.E.-led team keeps every stormwater obligation covered.

SWPPP Preparation & Filing

General contractors, developers, and industrial operators triggering NJDEP RSIS or NYSDEC construction general permit thresholds.

Price$2,500–$6,500
Turnaround1–2 Weeks

Site-specific Stormwater Pollution Prevention Plans (SWPPPs) for construction and industrial sites under NJDEP RSIS, NJPDES 5G3, and NYSDEC SPDES GP-0-20-001. Includes site plan integration, BMP selection, inspection templates, and Notice of Intent filing support.

What's Included

  • Site-specific SWPPP document
  • Erosion & sediment control BMP selection
  • Post-construction stormwater controls
  • NOI / NOT filing support
  • Weekly inspection templates & log book
  • Contractor training brief

Stormwater Management Design

Developers, architects, and municipalities planning new construction, redevelopment, or major site alterations in NJ, NYC, or the Hudson Valley.

Price$8,000–$28,000
Turnaround3–6 Weeks

Full stormwater management design for site development — water quality, quantity, and groundwater recharge modeling under NJDEP Ch. 8 and NYC DEP unified stormwater rule. Includes hydraulic and hydrologic modeling, structural BMP design, and permit-ready drawings.

What's Included

  • H&H modeling (HydroCAD / TR-55)
  • Structural BMP design (bioretention, MTDs, subsurface storage)
  • Groundwater recharge & water quality calculations
  • Permit-ready drawings & narrative
  • Municipal engineer coordination
  • As-built certification support

Green Infrastructure & MS4 Compliance

Municipalities, campuses, and portfolio owners with recurring MS4 obligations or CSO/stormwater consent-order commitments.

Price$6,000–$22,000
Turnaround3–6 Weeks

Green infrastructure design and MS4 compliance support for municipalities and large landowners — bioswales, rain gardens, permeable pavement, and blue-green roofs integrated with existing utility systems. Includes MS4 annual reporting and public outreach materials.

What's Included

  • Green infrastructure feasibility & siting
  • Bioretention & bioswale design
  • Permeable pavement & subsurface storage
  • MS4 annual reporting support
  • Public outreach & education materials
  • Post-construction O&M plans

P.E.-Sealed & Agency-Aligned

Every SWPPP and stormwater management plan is sealed by a licensed Professional Engineer and prepared around NJDEP, NYC DEP, and municipal engineering preferences so first-round review comments stay minimal.

Free Download

SWPPP Readiness Checklist

NJDEP & NYSDEC Construction Permits

Pre-construction checklist to reach NOI faster under NJDEP 5G3 and NYSDEC GP-0-20-001 construction general permits.

Ground-disturbance trigger evaluation
BMP selection matrix (E&S + post-construction)
Inspection & logbook templates
NOI / NOT filing walkthrough
PDF Guide • Sent to your email

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This document is for informational purposes only and does not constitute professional engineering advice. For project-specific guidance, contact a licensed professional engineer.

FAQ

Frequently Asked Questions

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