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.

Trinity Expands California Stormwater Capabilities

Trinity Consultants’ acquisition of Verux expands our stormwater compliance and construction-management capabilities across California and the Western United States. Dedicated SWPPP professionals provide responsive regional support to contractors, agencies, municipalities, and developers throughout key California markets.

California locations and service areas include:

Sacramento
Central Valley
East Bay
North Bay
South Bay
Chico
Stockton

The addition of Verux strengthens Trinity’s capabilities in SWPPP and Water Pollution Control Program development and implementation, stormwater permitting, program audits and oversight, site monitoring and inspections, stormwater sampling and analysis, and regulatory reporting.

Verux is also an authorized Caltrans training provider, offering the required 8-hour Water Pollution Control Manager (WPCM) training and a searchable certification database to confirm successful course completion.

Caltrans WPCM Training and Certification Records

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 develop and update Stormwater Pollution Prevention Plans (SWPPPs) and Water Pollution Control Programs (WPCPs) based on applicable permit requirements, site activities, and project-specific risks.

Trinity assists with permit applications and ongoing regulatory reporting, including Notices of Intent (NOIs), No Exposure Certifications (NECs), no-discharge filings, annual reports, Notices of Termination (NOTs), and California SMARTS documentation.

Our experts identify and help implement best management practices (BMPs) for erosion, sediment, spill prevention, runoff management, and site housekeeping to reduce pollutant discharges and maintain compliance.

We conduct routine and rain-event inspections, site monitoring, stormwater sampling, laboratory coordination, and results evaluation to identify potential issues and document compliance.

Trinity reviews SWPPPs, WPCPs, and municipal stormwater programs to identify compliance gaps, strengthen implementation, and prepare clients for regulatory inspections. Our capabilities include program audits, construction oversight, and MS4 program support.

Our Qualified SWPPP Developers (QSDs), Qualified SWPPP Practitioners (QSPs), and Water Pollution Control Managers (WPCMs) provide qualified oversight, field implementation, inspections, documentation, and compliance support for California construction projects.

We support Clean Water Act Section 401 Water Quality Certification requirements through project inspections, water-quality sampling and analysis, documentation, and ongoing compliance assistance.

Trinity assists project teams with evaluating Active Treatment System (ATS) needs and provides technical support during system design, specification, and contractor bidding.

We provide stormwater compliance training for facility personnel and project teams. As an authorized Caltrans training provider, Trinity also offers the required 8-hour Water Pollution Control Manager training for individuals serving in designated WPCM roles.

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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.

Both documents describe how stormwater and construction-related pollutants will be managed. The required document depends on the project, applicable permit, and contracting-agency requirements. In California, Caltrans projects may require either a SWPPP or a WPCP based on the project’s size, activities, and potential water-quality risks.

California construction projects may require qualified professionals to develop and implement stormwater compliance programs. Qualified SWPPP Developers (QSDs) prepare and amend SWPPPs, Qualified SWPPP Practitioners (QSPs) oversee implementation and monitoring, and Water Pollution Control Managers (WPCMs) manage water-pollution-control requirements for Caltrans projects.

Yes. Trinity supports ongoing compliance through site monitoring, routine and rain-event inspections, stormwater sampling and analysis, corrective-action support, annual reporting, and permit closeout. In California, our team can also assist with Stormwater Multiple Application and Report Tracking System (SMARTS) documentation and reporting.

Yes. Through our recent acquisition of Verux, Trinity is an authorized provider of the Caltrans 8-hour Water Pollution Control Manager training required for designated WPCM roles. Training is available for individuals and groups, and course completion can be confirmed through Verux’s searchable certification database.

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