MarshWagner (formerly iTunnel) provides a wide range of design, construction management, design-build, CM@Risk, and turnkey services for projects involving large-bore hard rock and soft ground tunneling, wastewater treatment facility expansions and upgrades, horizontal directional drilling, collection and distribution systems, pumping stations, and green infrastructure.Our staff of experienced design and construction professionals can provide cross-discipline expertise to support the thoughtful design and construction of underground and water infrastructure projects.We serve as a trusted adviser to owners, design consultants, and contractors throughout the US.MarshWagner is a Woman Owned businessServices we can provide:Project DevelopmentEngineering & DesignConstruction ManagementInspection Services & Quality AssuranceOwner's RepresentativeConstructability Assessments & Value EngineeringRisk ManagementDispute Avoidance and ResolutionTechnical Specialties:Geologic & Hydrogeologic AnalysisFeasibility, Planning, Preliminary & Final Design Reports, Plans & SpecificationsHorizontal & Vertical Alignment AnalysisConstruction Method EvaluationTunnel Boring Machine EvaluationDetailed Subsurface Exploration & Geotechnical Reports (GDR, GIR, GDSR, GBR)RehabilitationFlow Diversions & Bypass PumpingMaintenance of Plant Operations (MOPO)Biological Treatment ProcessesNutrient Removal & RecoveryBiosolids Processes & Energy RecoverySidestream Treatment ProcessesCommissioning & DecommissioningOFFICE LOCATIONS: Atlanta, Columbus, Houston, Jacksonville, San Francisco

Engineering & Design Construction Management Owner's Representative Constructability Assessments & VE Risk Management Dispute Avoidance & Resolution Geologic & Hydrogeologic Analysis Feasibility Planning Preliminary & Final Design Reports Plans & Specifications Horizontal & Vertical Alignment Analysis Construction Method Evaluation Tunnel Boring Machine Evaluation Detailed Subsurface Exploration & Geotechnical Reports (GDR GIR GDSR GBR) Rehabilitation Flow Diversions & Bypass Pumping Maintenance of Plant Operations (MOPO) Nutrient Removal & Recovery Biological Treatment Processes Biosolids Processes & Energy Recovery Sidestream Treatment Processes Inspection Services & QA Engineering & Design Owner's Representative Constructability Assessments & VE Dispute Avoidance & Resolution Geologic & Hydrogeologic Analysis Preliminary & Final Design Reports Plans & Specifications Horizontal & Vertical Alignment Analysis Detailed Subsurface Exploration & Geotechnical Reports (GDR Flow Diversions & Bypass Pumping Nutrient Removal & Recovery Biosolids Processes & Energy Recovery Inspection Services & QA