Stormwater Permitting & SWPPP Preparation

CORE Environmental Consultants offers expert SWPPP services to support stormwater permitting across New York City and Western New York. We help clients meet local, state, and federal requirements—including NYSDEC SPDES General Permits and MS4 regulations—by preparing Stormwater Pollution Prevention Plans (SWPPPs) that are site-specific, regulation-ready, and construction-aligned. Whether you’re starting new development or modifying an existing site, our SWPPP services ensure seamless stormwater compliance that keeps your project on schedule and in full regulatory compliance.

When Are SWPPP Services Required?

A SWPPP is typically required when:

• A construction project disturbs 1 acre or more of soil (or is part of a common plan of development)
• The project discharges to impaired or sensitive waters, triggering enhanced measures
• A site is subject to SPDES General Permit GP-0-25-001 (Construction)
• Your municipality requires MS4 compliance and SWPPP sign-off
• You’re applying for permits from the NYSDEC, local building departments, or state funding agencies

Failure to prepare or maintain a SWPPP can result in project delays, stop-work orders, or regulatory enforcement.

Our Stormwater Permitting SWPPP Services

CORE delivers fully integrated stormwater compliance services, including:

• Complete SWPPP preparation (Construction or Industrial, as applicable)
• Notice of Intent (NOI) filing and SPDES permit coordination
• Erosion and Sediment Control Plans (ESCP) with phasing details
• Temporary and permanent BMP design (e.g., silt fence, check dams, sediment basins, vegetated buffers)
• Runoff modeling and hydrologic analysis using TR-55, HydroCAD, or similar tools
• MS4 compliance coordination and contractor certification guidance
• SWPPP inspections and post-construction documentation

We prepare plans that meet or exceed NYSDEC design standards and can stand up to site inspections and audit reviews.

Our Process

1. Site Review & Scope Confirmation
   We evaluate grading, drainage, and project phasing to determine stormwater permit triggers, pollutant risks, and BMP needs.
2. Custom Stormwater Permitting SWPPP Development
   CORE drafts a detailed SWPPP including site description, pollutant sources, controls, inspection schedules, and maintenance plans—all tailored to your project’s sequence and site constraints.
3. Permit Filing & Public Documentation
   We handle the Notice of Intent (NOI), provide certification forms for contractors, and support public notice or MS4 submittals where required.
4. Construction Support & Oversight
   Need help during construction? We perform SWPPP inspections, prepare weekly logs, and verify BMP installation and maintenance.
5. Post-Construction Stormwater Management
   We assist with as-built documentation, long-term O&M plans, and runoff performance verification where permanent controls are involved.

✅ Why Choose CORE for SWPPP Services?

✔ NYSDEC & MS4 Expertise
We know the NYSDEC stormwater permit system inside and out—including how local MS4s modify requirements across municipalities.

✔ Engineering-Driven Design
Our environmental engineers develop SWPPPs that integrate smoothly with your civil design and grading plans.

✔ Construction-Savvy Compliance
We support your contractors with pre-construction meetings, field documentation, and BMP troubleshooting.

✔ Documentation You Can Count On
Every plan is delivered in a clean, submission-ready format with annotated maps, forms, and inspection templates.