Corporate Profile
Consulting Services
Field Services
Lab Services
Key Personnel

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John A. Seminara
Principal Engineer

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Professional Registrations

Registered Civil Engineer, California

Registered Geotechnical Engineer, California

Registered Geologist, California

Certified Engineering Geologist, California



BS Geological Engineering, Mackay School of Mines,
University of Nevada, Reno, 1987

Professional Training

Slope Stability Short Course
California State Polytechnic University,
Pomona, California, 1989

Deep Foundations Short Course
California State Polytechnic University,
Pomona, California, 1989

State of the Art Soil Liquefaction Short Course
University of Southern California, 1991


Over seventeen years experience in geotechnical consulting. Began career as a staff engineer and progressed to project level at a regional geotechnical firm over six years. Geotechnical assignments included supervision of staff geologists during geotechnical investigations, preparation of geotechnical reports, and supervision of field technicians performing field density testing as part of grading control operations.

Mr. Seminara later worked as a project level geotechnical engineer at a local firm for one year and at a branch office of a national engineering firm for one year, and was then principal engineer for a local firm for 4 years. Was responsible for obtaining new clients and maintaining existing client relationships, in addition to being a fully billable engineer. Mr. Seminara has extensive experience in preparing and supervising geotechnical studies for commercial, industrial, residential and retail properties, including warehouses, manufacturing facilities, bridges, towers and single family residences. Geotechnical experience also includes liquefaction studies, fault studies, forensic investigations, pavement studies, groundwater studies, landslide evaluations, slope stability studies, and general geotechnical consulting services. Provided designs for shallow foundations, drilled piers, driven piles, pavements, floor slabs and retaining walls.

Mr. Seminara currently has joint responsibility for overall management, administration and operations of the geotechnical and environmental divisions of the Corporation. Duties include proposal and report preparation, development and implementation of field and laboratory testing programs for geotechnical and geological investigations, and preparation of comprehensive geotechnical and geological reports. Responsible for supervision of field technicians performing earthwork observation.

Professional History

Southern California Geotechnical, Inc.
Anaheim, California
Principal Engineer
April 1998 to Present

Local Geotechnical Consulting Firm
Laguna Hills, California
Principal Engineer
1994 to 1997 

National Geotechnical Consulting Firm
Anaheim, California
Project Engineer
1993 to 1994

Local Geotechnical Consulting Firm
Fullerton, California
Associate Engineer
1992 to 1993

Regional Geotechnical Consulting Firm
Placentia, California
Staff and Project Engineer
1987 to 1992