Public engineering firm directory

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Alpha Geotechnical & Materials, Inc.

Tempe, AZ

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.

WebsitePhone1 office18 projects5 leadersFounded 1998Size Estimate: 1-25 employees

Project: Microchip Technology C6 Building

Service: Geotechnical EngineeringService: Subsurface Site InvestigationService: Foundation, Pavement, and Earthquake EngineeringIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+92 more

Alta Environmental & Infrastructure

Tucson, AZ

Partnering to Build & Protect What Matters Most

WebsitePhone5 offices10 projects14 leaders3 credentialsSize Estimate: 250-999 employees

Project: ADOT I-10 Tucson Reconstruction

Service: Civil EngineeringService: Site Civil DesignService: Grading, Drainage & Stormwater ManagementIndustry: InfrastructureIndustry: CommercialType: Civil Engineering+30 more

Compass Systems, Inc.

Lexington Park, MD

American Precision for Mission-Ready Technologies

WebsitePhone10 offices4 leaders2 credentialsFounded 1997Updated Jun 2026

Service detail: Research and Development

Service: Research and DevelopmentService: AI-Enabled Decision SupportService: Augmented Reality and TrainingIndustry: DefenseIndustry: AerospaceType: Defense Engineering+27 more

Geotechnical Testing & Inspections LLC

Scottsdale, AZ

Building Arizona From the Ground Up

WebsitePhone1 office3 leaders10 credentialsFounded 1995Updated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geotechnical Subsurface ExplorationsService: Foundation Analysis & DesignIndustry: CommercialIndustry: ResidentialType: Geotechnical Engineering+26 more

Pattison Engineering, LLC

Tucson, AZ

Innovative Geotechnical Solutions

WebsitePhone1 office1 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Geotechnical Site EvaluationsService: Soil Mechanics Laboratory ServicesIndustry: CommercialIndustry: TransportationType: Geotechnical Engineering+20 more

ProTeX the PT Xperts

Phoenix, AZ

ProTeX the PT Xperts is a geotechnical engineering, materials testing, and construction support firm based in Phoenix, Arizona, with a second office in Tucson. It serves residential, commercial, industrial, governmental, and institutional projects primarily across the Phoenix and Tucson metropolitan areas. Services span geotechnical investigation and design, construction materials testing and inspection, special inspections, environmental studies, and in-house laboratory testing. ProTeX is CCRL and Arizona Department of Transportation (ADOT) certified.

WebsitePhone2 offices2 credentialsUpdated Jun 2026

Service detail: Geotechnical Engineering

Service: Geotechnical EngineeringService: Foundation Design RecommendationsService: Spread FootingsIndustry: ResidentialIndustry: CommercialType: Geotechnical Engineering+54 more