Stormwater Permitting Services

Comprehensive Stormwater Permitting Solutions to Protect Waterways and Ensure Compliance

Since the early 2000s, Trinity Consultants has helped clients navigate permit requirements, design compliance strategies, and maintain effective stormwater programs for construction projects and industrial facilities. Trinity has developed Stormwater Pollution Prevention Plans (SWPPPs) for facilities nationwide, providing both initial plan preparation and ongoing program updates. SWPPPs are essential for industrial facilities and construction projects that fall under federal and state stormwater permitting requirements, ensuring that runoff is properly managed to protect rivers, lakes, and coastal waters.

Service Specifics

Our Stormwater Permitting Services

See how Trinity supports industrial facilities and construction sites with stormwater permits, SWPPP development, monitoring, reporting, and compliance strategies.

We prepare SWPPPs that align with NPDES regulations, state permit requirements, and industry best practices, tailoring each plan to site activities and risks.

Trinity assists with securing different types of stormwater permit coverage, including Notices of Intent (NOI), No Exposure Certifications (NECs) and No Discharge /NONA filings.

Our experts review and identify stormwater controls and BMPs for erosion, sedimentation, spill prevention, runoff management, and housekeeping practices to reduce pollutant discharges.

We establish stormwater monitoring, inspection, and employee training programs to comply with applicable requirements.

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Stormwater Permitting FAQs

A SWPPP is a written plan required under the National Pollutant Discharge Elimination System (NPDES) program that outlines how a facility or construction site will control stormwater runoff and minimize pollutants.

Facilities and projects covered under industrial stormwater permitting requirements—such as heavy and light manufacturing, landfills, mining, power plants, transportation hubs, treatment works, and construction sites disturbing one acre or more - must develop and maintain a SWPPP.

Most permits require SWPPPs to include: identification of the pollution prevention team, descriptions of activities and pollutant sources, best management practices, monitoring and inspection programs, employee training, erosion and sediment controls, and annual comprehensive site evaluations.

General permits, like EPA’s Multi-Sector General Permit (MSGP), cover groups of facilities with similar operations. Individual permits are issued for sites with unique conditions, such as those with direct wastewater discharges, and require site-specific permitting.

SWPPPs must be updated whenever there are significant changes at a facility or site, when inspections reveal deficiencies, or when permits are reissued - typically every five years.

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