Frederick, Seibert & Associates, Inc.
Excellence in Customer Service
Hagerstown, MD+3
Explore capabilities, project experience, and office locations to build your shortlist.
Excellence in Customer Service
Hagerstown, MD+3

Engineering with Purpose. Designing for Impact.
Charlotte, NC+2

Civil Engineering and Water distribution and utility coordination.
Montgomery, AL

Water Systems and Wastewater Systems.
Coos Bay, OR+3

Expert Environmental Services in Northern California
Chico, CA

Developing the Future with Expertise and Integrity
Pembroke Pines, FL

Geotechnical, environmental, and materials engineering from the roof to the ground
Washington, DC

Innovative and cost-effective civil and environmental engineering solutions
Port Mansfield, TX

Professional engineering, land surveying, planning, and environmental services in Minnesota.
Brainerd, MN+1
Solve better. Go further.

Environmental Engineering and Mine Site Layout Design.
Cross Lanes, WV

Responsive. Quality. Service.
Lander, WY

Natural Shoreline Restoration and Bioengineering Services
Chassell, MI

Designing What's Next
Minneapolis, MN+15

Our Dedication Makes Us The Perfect Choice For Your Project.
Ocala, FL

Trusted solutions for a changing world.
Environmental Consulting and Compliance and Environmental Assessment and Management.
Newton, MA

Marine Engineering and Waterfront Development Design.
Naples, FL

Creativity. Sustainability. Integrity.
Honolulu, HI

Civil engineering, land surveying, and septic design specialists in Northern and Central New Jersey.
Budd Lake, NJ
Supplying your design and engineered success!
Las Vegas, NV+1

Construction Services and Water/Hail/Wind/Fire/Smoke/Seismic Scope of Damage and Cost Estimating.
United States (multiple locations)
Renewable Energy and Composting Systems Experts
Colchester, VT

Serving Southern Fairfield County and the surrounding region
Norwalk, CT