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Geotechnology, Inc. is a professional corporation offering a comprehensive range of consulting services in applied earth and environmental sciences, geotechnical engineering, materials testing, geophysics, drilling, and construction observation.

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	Affholder, Inc.			Northstar Management Company
	Afram Corporation			City of Omaha Department of Public Works
	Alberici Constructors			Opus Northwest, LLC
	Alberici Industrial, LLC			Pace Properties, Inc.
	ARCO Construction			Paric Corporation
	Arrowhead Contracting, Inc.			Pinnacle Entertainment
	AMEC Earth & Environmental			Pinnacle Contracting
	Bi-State Development			R. V. Wagner, Inc.
	BJC HealthCare			Robinson Construction Company
	Block and Company			S M Wilson & Co.
	Breckenridge Materials			City of St. Louis Board of Public Service
	BSI Constructors			St. Louis County
	CTI & Associates			St. John's Mercy Medical Center
	Clayco Corporation			Saint Louis University
	The DESCO Group			St. Luke's Rehabilitation Hospital
	Conoco-Philips			SIU - Edwardsville
	Druco Development			SVV
	Duke Construction			Shell Oil
	Edward Jones			SSM Health Care
	Enbridge Pipelines
	Express Scripts			SPK Team
	Jefferson County			Tarlton Corporation
	KCI Intermodal Centre			Tyco Development
	Kozeny-Wagner			Warren Co. Concrete
	Lambert - St. Louis Airport			School of Medicine/ BJC Healthcare
	Magic House			Washington University Hilltop Campus
	City of Maryland Heights			Washington University University Center
	McCarthy Building Company			Westin Group
	MC Industrial			Wentzville R-IV Duello Road
	Mother of Good Counsel			Wentzville R-IV Mexico Road
	MoDOT
	Nerinx Hall			DEMO, Inc.
				Shriners Hospitals