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Alpha Geotechnical & Materials, Inc. is a Tempe, Arizona-based consulting practice founded in 1998, specializing in geotechnical and environmental engineering, geological services, construction inspections, and materials testing. It serves public and private clients on projects ranging from single commercial pads to large master-planned communities across the Phoenix metro area, delivering timely, accurate, and cost-effective field and laboratory testing.

Our Services. Your Success.

Integrity Is Our Foundation

Geoprofessional and Materials Testing Services

Over 25 years of experience!

Consulting Engineers & Geologists Northern California

Reese and Associates, Inc. is a geotechnical engineering firm headquartered in Santa Rosa, California, providing consulting and laboratory testing services to residential and commercial clients in the North Bay area. Formed in 2009 from the operations of Giblin Associates, Consulting Geotechnical Engineers, Reese and Associates serves public and private sector clients with geotechnical investigations, subsurface explorations, fault studies, geologic hazard assessments, and in-house laboratory testing performed to ASTM and Caltrans standards. During construction, geotechnical engineers and field technicians provide observation and testing services for site grading, fill placement, and foundation construction.