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Reno Tahoe Geo Associates, Inc. (RTGA) - offers over 29 years of experience providing geotechnical engineering, specialized civil engineering, and construction inspection services for residential, commercial, and industrial projects throughout Lake Tahoe and Northern Nevada and California.  Comprised of an innovative team, we are dedicated to developing creative, practical, and cost-effective solutions for our clients to build exceptional projects.


Jonathan Pease, President, has over 28 years of experience practicing geotechnical engineering and construction management.  He is joined by Marvin Davis, former owner, with over 48 years of experience, and two Associate Engineers who each have over 20 years of experience navigating the complex construction environment in the region.  We currently employ a staff of sixteen engineers, construction inspectors, and field and laboratory technicians.


We offer personalized client service to provide high-quality engineering solutions.  We are committed to providing project expectations that are not only met, but exceeded.

Jonathan Pease and Marvin Davis

Our Services

Welding Inspections
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Our Services
Geotechnical Engineering

We provide geotechnical engineering services such as preliminary geotechnical and geologic hazard assessments, geotechnical investigations, fault evaluation studies, and even seismic hazard evaluations (including liquefaction studies).  

Inspection and Testing

We provide construction 1704 Special Inspection including observation and compaction testing for engineered fills; observation or retaining wall inspection of concrete reinforcement, concrete placement (conventional reinforced concrete, shotcrete, pre-stressed concrete, post-tensioned concrete, concrete masonry construction); anchor and bolting inspection, non-destructive and shop steel welding and steel construction, spray-applied waterproofing. We provide basic soil and aggregate testing and Portland cement concrete cylinder testing, including retrieving sampled cylinders from the field.

Specialized Design

We have completed numerous specialized civil engineering projects, generally providing site preparation design for smaller projects in the Lake Tahoe basin which have a strong geotechnical or soil-related components.

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