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United-Heider Inspection Group 
is capable of performing all aspects of Geotechnical Engineering, Materials Testing and Special Inspection Services. With offices in Ontario, Moreno Valley and Orange County and full service state of the art laboratory facilities, this allows for us to efficiently service all of the Southern California Region.

The ETS Synergy
The ETS Family of Companies enable us to provide access to a large group of resources bringing a unique blend of capabilities to your project and offering complementary service lines that can respond to any contingencies that may occur in the geotechnical, materials testing, laboratory, storm water compliance, and related environmental disciplines throughout the entire western United States and Hawaii.


The ETS Family of Companies also includes:

Consolidated Engineering Laboratories (CEL) is a leader in providing quality materials testing, and construction inspection services. With corporate headquarters in San Ramon and full-service facilities in Oakland, Santa Rosa and Sacramento, California, CEL’s testing and inspection agency is the largest in Northern California with unequaled resources and capabilities. CEL is also located in Salt Lake City, Utah, Honolulu, Hawaii, and Maui, Hawaii. 
Geosphere was created to deepen and enhance our engineering capabilities and add additional professional consulting services including Environmental Management and Engineering Geology. Our professional Engineers, Geologists, and Environmental Scientists have a wide range of experience in numerous sectors. Geosphere Consultants, Inc. with offices throughout California, is an independent company within the Engineering Testing Services (ETS) Family of Companies. Geosphere Consultants Inc. was created in 2007 as extension and growth of the previous 10 years of Consolidated Engineering Laboratories Geotechnical Engineering Division.

CEL Consulting provides innovative solutions to construction problems, as well as quality control testing and inspection for construction material manufacturers around the world. CEL Consulting is headquartered in Oakland, CA.

Materials Testing & Inspection, Inc. (MTI) provides a full range of environmental, geotechnical engineering, and materials inspection and testing services. Headquartered in Boise, ID, MTI offers services from ten offices in Idaho, Oregon, and Washington.