Business Details
24 Years
experience
Expert Construction & Stormwater Compliance Solutions
Since 2002, Whitson CM has been a leader in construction management and stormwater compliance, delivering high-quality, environmentally responsible solutions to public and private sector clients. Headquartered in San Diego with field offices across California, we combine expertise in heavy civil construction, environmental regulation, and design-build engineering to ensure projects meet regulatory standards while minimizing financial risk for our clients. Our team of certified professionals holds credentials including CISEC, CPESC, QSD, and Trainer of Record, reflecting our deep commitment to compliance and technical excellence.With over 1,000 projects completed statewide, we specialize in stormwater pollution prevention, site development, and post-construction BMP maintenance, maintaining a perfect compliance record across all our managed projects. Our sister company partnership with California Filtration Specialists enables us to deliver innovative stormwater treatment systems that reduce costs and improve environmental outcomes.
Services
Stormwater Compliance
Site Development
BMP Maintenance
Heavy Civil Construction
Permit Management
Details
- Year established: 2002
Highlights and features
- We offer 20+ years of specialized stormwater compliance expertise
- Our sister company partnership enables proprietary stormwater treatment solutions
- Our team holds multiple state-certified Trainer of Record credentials
- We maintain a 100% compliance record across 1,000+ completed projects
- Our A-licensed engineering contractors provide full-service site development
Associations and certifications
- CISEC
- CPESC
- CESSWI
- CPSWQ
- QSD
- QSP
- Trainer of Record
Services
Stormwater Compliance
We provide comprehensive stormwater compliance services for construction and industrial sites, including SWPPP development, inspections, and regulatory training. Our certified team ensures adherence to California's Construction General Permit and Industrial General Permit requirements. With a 100% compliance record, we help clients avoid fines while maintaining operational continuity through proactive regulatory strategy.
Site Development
As an A-licensed engineering contractor, we manage full-scale site development projects from design through construction. Our services include infrastructure installation, grading, and utility coordination. We specialize in complex public works projects requiring multi-agency permitting and environmental compliance, delivering cost-effective solutions that meet municipal specifications and regulatory standards.
BMP Maintenance
We offer ongoing inspection and maintenance of post-construction stormwater treatment systems. Our certified technicians ensure long-term functionality of BMPs through scheduled assessments and regulatory reporting. By combining proprietary filtration technology with maintenance expertise, we help property owners avoid violations while maintaining environmental performance of installed systems.
Heavy Civil Construction
Our construction management services cover roadways, utilities, and public infrastructure projects exceeding $70 million in value. We coordinate all aspects of construction including permitting, contractor management, and quality control. With extensive experience in Caltrans and municipal projects, we deliver complex civil works on schedule while maintaining strict compliance with environmental regulations.
Design-Build Systems
In partnership with California Filtration Specialists, we design and install space-saving stormwater treatment systems. Our proprietary underground tank systems reduce operational costs while improving discharge quality. These solutions combine engineering innovation with proven filtration technology to meet regulatory requirements for commercial and industrial properties across North America.
People
Mitchel Whitson
Founder
Mitchel founded Whitson CM in 2002 as a heavy civil construction firm. Under his leadership, the company expanded into stormwater compliance and design-build solutions while maintaining its focus on quality construction management. He oversees strategic growth and project execution across California.
Questions
What construction services does Whitson CM offer?
We provide full-service construction management for heavy civil projects including roadways, utilities, and public infrastructure. Our services cover project design, permitting, contractor coordination, and regulatory compliance management.
How do you ensure stormwater compliance?
Our certified team (QSD, QSP, CISEC, CPESC) develops SWPPPs, conducts inspections, and provides staff training. We maintain a 100% compliance record through proactive regulatory strategy and proprietary treatment systems.
What areas do you serve?
We operate statewide in California with offices in San Diego, Los Angeles, Sacramento, and the Central Valley. Our services extend to the broader southwestern United States for specialized projects.
Can you help with industrial stormwater permits?
Yes, we manage compliance with California's Industrial General Permit including SWPPP development, spill prevention plans, and regulatory reporting for facilities across multiple industry sectors.
What certifications does your team hold?
Our staff maintains certifications including Certified Inspector of Sediment and Erosion Control (CISEC), Certified Professional in Erosion and Sediment Control (CPESC), Qualified SWPPP Developer (QSD), and Trainer of Record credentials.
