Business Details
32 Years
experience
Trusted Engineering and Environmental Consulting Services in Yakima, WA
Founded in 1994, G N Northern has established itself as a trusted multi-disciplinary engineering firm specializing in geotechnical, environmental, and construction materials testing services. With offices across Washington and Oregon, our team of certified professionals delivers practical solutions for public and private sector clients throughout the Pacific Northwest and Alaska. Our expertise spans geotechnical field exploration, pavement engineering, environmental consulting, and specialized construction inspections. We prioritize client collaboration, maintaining direct communication throughout projects to ensure alignment with budgetary and regulatory requirements.Our senior staff brings decades of combined experience, supported by technicians certified in ACI, ICC, and NICET standards. We adhere to rigorous quality control protocols, utilizing ASTM-compliant equipment and NIST-traceable calibration standards. Our project management approach combines dedicated client liaisons with team-based problem-solving to optimize resource utilization. We serve diverse sectors including renewable energy, healthcare, education, and infrastructure, with notable experience in complex projects like the Portland Light Rail Airport MAX and Umatilla Army Depot facilities.
Services
Geotechnical Engineering
Environmental Consulting
Pavement Engineering
Geophysical Services
Materials Testing
Details
- Year established: 1994
Highlights and features
- We offer 23+ years of combined experience in geotechnical engineering and materials testing
- Our staff holds certifications from ACI, ICC, and NICET standards organizations
- We provide comprehensive services spanning site selection through construction completion
- Our multi-level quality review process ensures accurate project outcomes
- We maintain specialized equipment calibrated to NIST-traceable standards
Services
Geotechnical Engineering
Our geotechnical engineers conduct comprehensive soil and groundwater investigations for residential, commercial, and industrial projects. We provide foundation design recommendations, slope stability analysis, and seismic evaluations using advanced testing methods. Our team ensures safe, cost-effective solutions through detailed subsurface exploration and laboratory testing.
Environmental Consulting
We offer Phase I and II environmental site assessments, hazardous materials surveys, and remediation planning. Our certified professionals identify contamination risks and develop compliance strategies for property transactions and development projects. Services include underground storage tank evaluations and asbestos inspections.
Pavement Engineering
Our pavement engineers perform structural evaluations using Falling Weight Deflectometer and Ground Penetrating Radar technologies. We design concrete and asphalt pavements according to AASHTO standards, conduct life cycle cost analysis, and provide haul road assessments for renewable energy projects.
Materials Testing
We provide comprehensive materials testing for soil, concrete, masonry, steel, and asphalt. Our certified technicians perform field and laboratory testing following ASTM standards, including compaction testing, concrete cylinder breaks, and structural steel inspections.
Geophysical Services
Our geophysical team uses seismic refraction, ground-penetrating radar, and electromagnetic testing to map subsurface conditions. Services include bedrock depth determination, void detection in concrete structures, and pre-blast vibration monitoring for construction projects.
People
Imran Magsi
President/Principal Geotechnical Engineer
Registered Professional Engineer in five states with over 23 years of experience, specializing in geotechnical engineering and materials testing. Holds MS and BS degrees in Civil Engineering and has completed 3000+ projects.
Karl Harmon
Regional Manager/Geotechnical Engineer
Dual-licensed Professional Engineer and Geologist with 23+ years of experience in geotechnical assessments and environmental site evaluations. Specializes in geologic hazard analysis and construction materials testing.
Guy Vincent
Testing Program Manager
Certified ACI Concrete Field Testing Technician with 26 years of experience in materials testing and quality control. Oversees testing programs and ensures compliance with building codes and testing standards.
Questions
What geographic areas do you serve?
We operate throughout Washington, Oregon, and Alaska, with offices in Yakima, Kennewick, Spokane Valley, Hood River, and Hermiston.
What engineering certifications do your staff hold?
Our team includes professionals certified by ACI, ICC, NICET, and AWS, with engineers licensed in multiple states and specialties.
How do you handle complex project challenges?
We use a team approach combining dedicated project managers with specialized technical experts to solve complex engineering problems efficiently.
What testing standards do you follow?
We conduct testing according to ASTM standards and Washington/Oregon DOT specifications, with equipment calibrated to NIST-traceable standards.
What industries do you work with?
We serve renewable energy, healthcare, education, infrastructure, and industrial sectors with specialized engineering solutions.
