Business Details
26 Years
experience
Trusted Geotechnical Engineering Services in Woodinville, WA
Nelson-Geotechnical Associates has been a trusted partner in geotechnical engineering for 25 years, specializing in Washington's complex geology and topography. Our expertise spans development support, environmental assessments, coastal infrastructure, and landslide mitigation. We provide comprehensive services from preliminary evaluations to construction monitoring, ensuring long-term stability for residential, municipal, and commercial projects.Our team of certified professionals combines advanced technology with practical problem-solving to deliver cost-effective, sustainable solutions. We pride ourselves on responsive service, transparent communication, and building lasting relationships with clients across diverse sectors including construction, environmental remediation, and infrastructure development.
Services
Development Support
Environmental Assessments
Coastal Infrastructure
Expert Witness
Infrastructure Design
Landslide Mitigation
Foundation Testing
Stormwater Monitoring
Geotechnical Reports
Site Remediation
Details
- Year established: 2000
Highlights and features
- We have 25 years of experience in Washington's complex geology
- Our team includes certified professionals with advanced technical expertise
- We provide cost-effective solutions for residential and commercial projects
- Our staff offers rapid response for urgent geotechnical needs
- We maintain long-term partnerships with municipal and environmental stakeholders
What people say
Professional and attentive staff
Cost-effective solutions
Trusted resource for geotechnical needs
Responsive and knowledgeable team
Predictively effective project delivery
Services
Development Support
We provide comprehensive geotechnical support for property development projects from initial assessments to construction completion. Our services include soil characterization, foundation design, compaction testing, and construction monitoring. With expertise in Washington's unique geological conditions, we help clients navigate complex development challenges while ensuring structural stability and regulatory compliance.
Environmental Assessments
Our environmental services include Level I & II site assessments and hazardous site remediation. We evaluate soil and groundwater conditions to identify environmental risks and develop mitigation strategies. Our team specializes in restoring contaminated sites while maintaining ecological balance, with proven experience in coal mine hazard assessments and habitat restoration projects.
Coastal Infrastructure
We design sustainable coastal protection systems that balance development needs with ecosystem preservation. Our services include marina design, erosion control, bluff studies, and wave protection analysis. Using advanced modeling software, we create resilient infrastructure solutions for waterfront developments while maintaining environmental integrity through soft armoring and eco-friendly design approaches.
Expert Witness
Our certified expert witness provides litigation support in geotechnical engineering matters. Services include technical analysis of engineering failures, insurance claims evaluation, and courtroom testimony. With extensive experience in deposition appearances and written statements, we deliver clear, fact-based expert opinions to support legal teams in resolving complex geotechnical disputes.
Landslide Mitigation
We specialize in landslide analysis and slope stabilization solutions using advanced technology and forensic investigation methods. Our services include stability analysis, drainage system design, and mitigation measure implementation. We address both natural and man-made slope failures through comprehensive solutions like soil nailing, shoring wall design, and surficial erosion protection systems for residential and commercial properties.
People
Khaled Shawish
Principal
Licensed Professional Engineer with 25+ years of geotechnical expertise. Specializes in foundation design, slope stability, and forensic analysis. Provides expert witness testimony in complex engineering cases.
Lee Bellah
Senior Geologist
Licensed Geologist with extensive experience in subsurface investigations and environmental assessments. Specializes in site characterization and regulatory compliance for complex development projects.
Sarah Dunn
Project Geologist
Certified Engineering Geologist with expertise in field investigations and geotechnical reporting. Focuses on foundation analysis and construction monitoring for residential and commercial developments.
Alex Rinaldi
Project Manager
Licensed Geologist and Professional Engineer managing infrastructure projects across Washington. Specializes in coordinating municipal partnerships and technical implementation of complex engineering solutions.
Chris Ward-Guthrie
Project Geologist
Environmental geologist with expertise in hazardous site assessments and remediation planning. Focuses on balancing development needs with ecological preservation in project design.
Questions
What geotechnical services does Nelson Geotechnical Associates offer?
We provide foundation design, slope stability analysis, environmental assessments, coastal infrastructure planning, expert witness services, and construction monitoring for residential, commercial, and municipal projects.
Do you handle environmental remediation projects?
Yes, we conduct Level I & II environmental site assessments and specialize in hazardous site remediation, including coal mine hazard evaluations and habitat restoration projects.
Can you assist with landslide mitigation?
Our experts perform slope stability analysis and design comprehensive mitigation systems including soil nailing, drainage solutions, and shoring structures for residential and commercial properties.
Do you provide expert testimony services?
Yes, our licensed Professional Engineer offers expert witness services including technical analysis, courtroom testimony, and written reports for geotechnical engineering litigation cases.
What areas do you serve?
We primarily serve Western Washington, Central Washington, and Eastern Washington from our offices in Woodinville and Wenatchee.
