Business Details
44 Years
experience
Trusted Geotechnical Engineering Services in Southern California
Landmark Consultants has provided expert geotechnical engineering and construction materials testing services since 1982. Our firm was formally incorporated in El Centro, California in 2003, though our team has operated together continuously since 1982. With offices in El Centro and Palm Desert, we serve clients across Imperial, Riverside, and San Bernardino Counties. Our locally owned business is led by three principal engineers with decades of combined experience in geotechnical consulting. We specialize in fatal flaw studies, geotechnical investigations, and construction testing services for public and private sector projects.Our technical staff delivers innovative solutions for complex site conditions while maintaining cost-effectiveness. We work closely with clients throughout all project phases to ensure continuity and alignment with their goals. Our reputation for quality service has been built through 40+ years of delivering reliable engineering expertise. We maintain strong working relationships with architects, developers, municipalities, and construction firms. Our 21-person team combines deep technical knowledge with responsive client service to address challenging geotechnical issues.
Services
Geotechnical Engineering
Laboratory Testing
Field Testing
Construction Inspections
Environmental Assessments
Details
- Year established: 1982
Highlights and features
- We have 40+ years of continuous geotechnical engineering experience
- Our team includes three licensed principal engineers with local expertise
- We provide full-service testing from planning through construction
- We maintain an in-house materials testing laboratory
- Our staff works directly with clients throughout all project phases
Services
Geotechnical Engineering
Our geotechnical engineering services include site investigations, subsurface exploration, and geologic hazard assessments. We provide foundation recommendations, slope stability analysis, and seismic evaluations for commercial, industrial, and infrastructure projects. Our engineers deliver comprehensive reports with actionable recommendations for site development.
Laboratory Testing
Our accredited materials testing laboratory performs soil, concrete, and asphalt analysis. We conduct compaction tests, grain size analysis, and strength testing to ensure construction materials meet engineering specifications. Our lab supports quality control for roadways, foundations, and structural elements.
Field Testing
We provide on-site testing for soil compaction, concrete quality, and asphalt density. Our field technicians perform grading observations and material sampling during construction. These services ensure compliance with design specifications and building code requirements.
Construction Inspections
Our special inspections cover welding, masonry, and reinforced concrete work. We verify construction practices meet approved plans and engineering standards. Our inspectors document findings and collaborate with contractors to resolve issues.
Environmental Assessments
We conduct Phase I environmental site assessments and develop decommissioning plans. Our services include on-site wastewater treatment system design and contaminated site restoration guidance for regulatory compliance.
People
Randy Lyon
President
Randy Lyon co-founded Landmark Consultants and oversees business operations. With 40+ years in geotechnical consulting, he ensures client satisfaction and project quality. He maintains active involvement in major projects.
Jeffrey Lyon
CEO/Principal Engineer
Jeffrey Lyon, a licensed professional engineer, directs technical operations. He specializes in geotechnical investigations and construction monitoring. With expertise in complex site conditions, he leads engineering teams for infrastructure projects.
Peter LaBrucherie
Vice President/Principal Geotechnical Engineer
Peter LaBrucherie, a licensed geotechnical engineer, manages field investigations and laboratory testing. He develops innovative solutions for challenging soil conditions. His technical leadership ensures accurate subsurface analysis and reporting.
Questions
What geographic areas do you serve?
We primarily serve Imperial, Riverside, and San Bernardino Counties in Southern California from our El Centro and Palm Desert offices.
What types of projects do you handle?
We work on infrastructure, water resource, power generation, and commercial development projects requiring geotechnical engineering and materials testing services.
Do you provide laboratory testing services?
Yes, we operate an in-house materials testing laboratory for soil, concrete, and asphalt analysis to support quality control requirements.
Are your engineers licensed professionals?
Our three principal engineers hold professional engineering (PE) and geotechnical engineering (GE) licenses in California.
How long has your company been in business?
Our staff has worked together continuously since 1982, with formal incorporation in 2003 as Landmark Consultants, Inc.