GeoConcepts, was formed in 1995 to provide full service Geology and Geotechnical (Soils) Engineering Services by combining the professional experiences and expertise of Robert Sousa and Scott Walter.


We provide engineering geology and geotechnical engineering explorations for residential properties, commercial properties, industrial developments, and land use planning. We have expanded over the years to include additional licensed geologists, licensed engineers and certified soils technicians. Our primary focus was initially on residential development such as custom single family homes (hillside and flatland), additions, pools, tennis courts, and decks. Over the years the scope of projects has expanded to include residential tracts, commercial properties, multi-family residences and subdivisions.

Serving Los Angeles since 1995


Our team includes certified engineering geologists, registered geotechnical engineers, civil engineers, and professional geologists with extensive experience in Southern California.


Our professionals hold multiple licenses and certifications in the State of California.



Professional Staff

Scott Walter
Principal Engineer

Mark Barrett
Partner, Operations

Stephen Scully
Project Geologist


Pedram Rahimikian
Project Geologist

Raffi Dermendjian
Staff Engineer

Eduardo Gonzalez
Staff Geologist

Karen Campbell
Staff Engineer



Field/Laboratory Staff

Dan Glaser
Senior Field Technician

James VanSchaik
Field Technician

Brian Sayre
Senior Field Technician


Brian Conter
Senior Field Technician

Ousama Zabaneh
Lab Manager



Office Staff

Ignacio Osorio
Business Manager

Marcia Sanchez
Dispatcher and Receptionist