Why Industrial General Permit (IGP) Compliance Matters
The California IGP (NPDES General Permit for Stormwater Discharges Associated with Industrial
Activities) is a statewide regulatory program designed to reduce stormwater pollution from
industrial facilities. Compliance with the IGP is essential to minimize regulatory risk, avoid
enforcement fines, and demonstrate environmental stewardship. Industrial sites are required to implement Stormwater Pollution Prevention Plans (SWPPPs), perform stormwater sampling and monitoring, and maintain documentation to meet evolving State Water Resources Control Board (SWRCB) requirements.
With increasing regulatory scrutiny, ERA (Exceedance Response Action) level reporting, and targeted enforcement across California, it is critical for facilities to implement proactive and site specific stormwater compliance strategies that reduce exposure and ensure permit coverage.
Michael Baker International provides full-service support for all phases of Industrial General Permit compliance: from planning and permitting to SWPPP development, BMP design, data management, SMARTS reporting, and notice of termination (NOT) documentation. Our integrated
approach combines technical expertise, regulatory insight, and scalable solutions tailored to your
industry, site operations, and compliance risks.
Our Experience
Our team includes Qualified Industrial Stormwater Practitioners (QISPs), Trainers of Record (ToRs), and licensed Civil Professional Engineers who support facilities across a wide range of sectors. We develop scalable and efficient compliance programs that evolve with site needs and permit revisions.
Services
- Stormwater Pollution Prevention Plan (SWPPP) & Site Map
- QISP Exceedance Response Action (ERA) Level 1 & Level 2 Reporting
- Water Quality Based Corrective Action Plan (WQBCA Plan)
- Permit Registration (Notice of Intent)
- Annual Reporting & SMARTS Data Management
- Permit Exemption Evaluation – No Exposure Certification (NEC), Notice of Non-Applicability (NONA) & Notice of Termination (NOT)
- Best Management Practices (BMP) Evaluation, Design & Retrofit Recommendations
- Hydrologic & Drainage Evaluations
- Treatment System Evaluation & Sizing
- Data Management & Ad Hoc Reporting
- Site Inspections & Compliance Evaluations
- Industrial Stormwater Compliance Training
- Industrial Stormwater Sampling & Monitoring
- Regulatory Review, Audit Support & Litigation Support
- SB 205 Compliance & Business License Support
Key Dates For IGP Compliance
Start of Reporting Year
July 1
- Prepared to collect samples
October 1
(if applicable)
- ERA Level 1 Evaluation by Qualified Industrial Stormwater Practitioner (QISP)
December 31
- Collected minimum 2 samples from Qualifying Storm Events (QSEs)
End of First Half of Reporting Year
January 1st
(if applicable)
- ERA Level 1 Report
- ERA Level 2 Action Plan
- ERA Level 2 Technical Report
June 30th
(if applicable)
- Collected minimum 2 samples from QSEs
- Annual Comprehensive Facility Compliance Evaluation (Annual Evaluation)
End of Reporting Year
July 15th
- Annual Report due on SMARTS for the previous reporting year
- Updated ERA Level 2 Technical Report (if applicable)
Get in Touch
Contact Us
Chris Hsu, D.Env, P.E., QISP ToR, QSD/P, SM-QSD/P
Commercial & Industrial Stormwater Services Lead
