PhoenixGeolocation: 33.3813, -111.9409


Terracon has been involved in both the geotechnical and construction materials engineering testing services for the Arizona Diamondbacks/Colorado Rockies Spring Training Facility.

The Phoenix Office, located in Tempe, Ariz., opened for business in January 1995. Today, the Phoenix team includes more than 55 professional, technical, and administrative staff. Clients include a mix of both public and private sector clients, as well as national clients. Being in one of the fastest growing areas of the country, they do a particularly large volume of work associated with transportation projects, energy development and power transmission, and commercial and retail development. Services include the design of reinforced earth structures, including mechanically stabilized earth retaining walls, reinforced earth slopes and soil nail retaining walls, which is somewhat unique within Terracon. The longest on-going project to date is our pavement management services for the Maricopa County Community College District (the largest community college district in the United States). We manage more than 9 million square feet of pavement(s) for the College District, located on 19 campuses throughout Maricopa County.

4685 S. Ash Ave., Suite H-4
Tempe, AZ 85282

Phone: (480) 897 8200
Fax: (480) 897 1133




Brent Borchers, Office Manager
Chuck Reynolds, Sr. Client Development Manager

Key Projects

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Davis Dam-Kingman 69 kV Transmission LineGeolocation: 35.2143, -113.7633

Western Area Power Administration (Western) reconstructed the 69-kV Davis Dam to Kingman TAP transmission line. The new line, constructed with a combination of steel and concrete structures, will replace an existing wood supported line that was constructed in 1947. The new transmission line is approximately 27.3 miles in length and extends from the substation at Davis Dam located on the Colorado River on the west end, through Golden Valley, and terminates at the Mohave Electric Corporation's Kingman, Arizona TAP.

Terracon overcame significant challenges to complete the…

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Former Metal Plating Facility Site Characterization and RemediationGeolocation: 34.15, -114.2891

The Arizona Department of Environmental Quality (ADEQ) issued a Notice of Violation (NOV) to the business owner and operator of a metal plating facility in 2007. The property owner selected Terracon to perform site characterization activities around the facility and in the warehouse where the former plating line pit was located. The lateral and vertical extent of hexavalent chromium, used in the plating process, produced the contamination in the soil which was defined by Terracon's environmental group. Terracon then developed a remedial action plan.

During the project, Terracon…

M&I Bank DevelopmentGeolocation: 33.5992, -111.9833
Terracon has provided single-source environmental, geotechnical, and construction materials engineering and testing/inspection services associated with M&I Bank's development of multiple retail branches in metropolitan Phoenix since 2004. Terracon has performed phase I environmental site assessments for undeveloped tracts of land associated with new M&I Bank retail sites. Terracon has provided geotechnical engineering reports of M&I Bank sites for use by other engineering consultants and contractors in the design and construction of foundations, slabs, and pavements. Terracon…

Spring Training Facility for Arizona Diamondbacks & Colorado Rockies, Salt River Pima-Maricopa Indian Community (SRPMIC)Geolocation: 33.4942, -111.9261

Terracon's Phoenix office has been involved in both the geotechnical and construction materials and engineering testing services for the Arizona Diamondbacks/Colorado Rockies Spring Training Facility. Terracon's services on the $120+ million facility were provided as part of an SRPMIC on-call contract awarded in 2009. Terracon was an active participant in the design meetings, which allowed us the opportunity to provide extensive construction-related input during the design stage that resulted in the creation of a unique foundation system. Prior to final design of the project, Terracon…