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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 the Lake Tahoe region, Northern Nevada, and California.  Comprised of an innovative team, we are dedicated to developing creative, practical, and cost-effective solutions for our clients.


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 geotechnical investigations, fault evaluation studies, forensic evaluation of foundations (expansive soil, groundwater, settlement and lateral movement damage), design of rockery and retaining walls, and seismic hazard assessments (including liquefaction studies).

Special Inspection and Material Testing

Construction 1704 Special Inspection and material testing including observation and compaction testing for fills; observation 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, and spray-applied waterproofing. 

Small Civil Design

Residential and small commercial civil engineering projects, including site grading and roadway access, percolation testing and septic design, retaining wall design and slope repairs, lakefront and river revetments, and stormwater management systems. Many of these designs are closely related to our expertise in and knowledge of soil conditions.

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