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GZA GeoEnvironmental, Inc.

Norwood, MA

Solving Complex Challenges in Natural and Built Environments

WebsitePhone35 offices4 projectsSize Estimate: 800 employeesUpdated Jun 2026

Project: Upper Roberts Meadow Reservoir Dam Breach and Stream Restoration Project

Service: Geotechnical EngineeringService: Environmental Site Investigation and RemediationService: Environmental Site InvestigationIndustry: AgricultureIndustry: IndustrialType: Geotechnical Engineering+29 more
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Siefert Associates, LLC

Watertown, CT

Siefert Associates, LLC is a construction engineering firm serving clients in the New York City metropolitan area and beyond. Founded in June 2000 by Vincent Siefert, PE, the practice grew from a single-person operation to a team of more than 35 engineers across offices in Watertown, Connecticut, and White Plains, New York. Its specialty is construction engineering, determining the most efficient and creative means and methods for large-scale construction projects, complemented by structural, demolition, erection, and geotechnical engineering disciplines.

Website2 offices2 leadersFounded 2000Size Estimate: 35+ employeesUpdated Jun 2026

Service detail: Construction Engineering

Service: Construction EngineeringService: Temporary Support SystemsService: Staged Construction AnalysisIndustry: InfrastructureIndustry: BridgesType: Structural Engineering+20 more
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