Certified Inspections. We are federally and locally certified inspectors.
Fully Insured. We operate with the highest level of insurance
State Board Licensed. We are licensed professional engineers & geologists
Professional Methane Gas Detection Services and Soil Vapor Monitoring for Safe Construction in Southern California
Methane gas can accumulate in soil and pose serious safety risks to buildings and occupants, as well as construction sites before breaking ground. Our certified methane detection services ensure your construction project meets safety requirements and building codes throughout Southern California.
Methane Detection & Testing Services
Get Methane Testing Before It’s Too Late!
Don’t risk safety violations or construction delays due to unsafe Methane levels. Get certified methane detection services today!
Construction Inspections / Construction Services / Geotechnical Engineering
Construction Inspections / Construction Services / Geotechnical Engineering
Other Engineering Services
Trustworthy Team
Our team at Marshall GeoScience has a reputation for providing the highest level of customer service.
Specialty Expertise
We are a team comprised of licensed and certified experts in different fields of construction with more than 20+ years of experience.
Industry Experience
We have developed projects in a broad spectrum of industries.
More Geotechnical Insights
We are the state’s leading physical engineers for methane and methane-soil testing.

The foundation of our work begins here.
Reimagining the future of our natural resources.
Environmental engineers play a crucial role in both residential and commercial development projects by integrating principles from engineering, soil science, biology, and chemistry to develop solutions to environmental problems.





