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Business Details
33 Years
experience
Expert Civil Engineering Solutions
Since 1993, Mc Mahon & Mann Consulting has provided civil engineering consultation and design services for geotechnical, subsurface environmental, and solid waste projects throughout New York and the eastern United States. Our team of 18 professionals, including nine licensed engineers and one professional geologist, brings decades of combined experience to solving complex subsurface challenges. We maintain Certificates of Authority to provide engineering and geology services in New York State, a rare distinction for firms specializing in geotechnical assignments. Our dynamic approach emphasizes early client collaboration, from project scoping and budgeting through conceptual planning, subsurface exploration, testing, analysis, design, construction, and monitoring. This methodology fosters continuity and cultivates true design/construction partnerships, ensuring consistent client engagement at every project stage.

Our engineers work both in-office and on-site, delivering tailored solutions for private industry, architects, contractors, and public agencies. With over 30 years of experience, we've earned recognition for our accomplishments in geotechnical engineering, environmental remediation, and infrastructure development. Our staff's technical expertise spans slope stability, landslide mitigation, dam remediation, and solid waste engineering, supported by advanced research partnerships and federal agency collaborations. We prioritize client relationships built on transparency, technical excellence, and a commitment to solving complex engineering and geology challenges. This philosophy has established us as a trusted partner for infrastructure projects requiring specialized geotechnical knowledge and multidisciplinary problem-solving capabilities.
Services
Geotechnical Engineering Environmental Remediation Foundation Design Dam Engineering Slope Stabilization Solid Waste Management Retaining Wall Design Excavation Shoring Waterfront Engineering Condition Assessment
Details
  • Year established: 1993
Highlights and features
  • 30+ years of specialized geotechnical engineering experience
  • Team of 9 licensed professional engineers and geologists
  • Comprehensive project lifecycle management from planning to monitoring
  • Recognized expertise in dam remediation and slope stabilization
  • Active participation in federal research programs like NCHRP
Associations and certifications
  • New York State Certificate of Authority
Services
Geotechnical Engineering
Our geotechnical engineering services address subsurface challenges through comprehensive site investigations, soil testing, and foundation design. We specialize in complex projects requiring slope stabilization, earth reinforcement, and ground improvement techniques. With advanced expertise in soft clay assessment and specialized geotechnical methods, we deliver solutions for infrastructure, dams, and environmental remediation projects across the eastern United States.
Environmental Remediation
We provide environmental remediation services for soil and groundwater contaminated with petroleum products and hazardous materials. Our team develops containment strategies and remediation plans for industrial sites, waste facilities, and public infrastructure projects. With specialized knowledge in subsurface environmental engineering, we implement solutions that meet regulatory requirements while ensuring long-term environmental protection and site stability.
Dam Engineering
Our dam engineering expertise includes design, assessment, and remediation of water supply reservoirs, flood control structures, and hydroelectric facilities. We conduct condition assessments, develop rehabilitation plans, and implement testing protocols for earth reinforcements. With participation in national research programs, we apply advanced techniques for evaluating metal loss and service life reliability in dam structures across diverse geological conditions.
Foundation Design
We offer foundation engineering services for commercial, industrial, and public infrastructure projects. Our approach combines subsurface exploration with advanced analysis to develop optimal foundation solutions for challenging soil conditions. Specializing in deep foundations, pile testing, and excavation support systems, we ensure structural stability while addressing site-specific geotechnical challenges through innovative design and construction monitoring.
Slope Stabilization
Our slope stabilization services address unstable soil and rock slopes that pose public safety risks. We implement solutions for roadway protection, embankment reinforcement, and landslide remediation using advanced geotechnical methods. With expertise in regional geologic mapping and structural analysis, we develop customized stabilization systems that integrate with site-specific subsurface conditions and environmental considerations across diverse project locations.
People
Susanne George
Geotechnical Engineer
With 17 years of experience, Susanne specializes in geotechnical projects involving complex subsurface conditions. She excels in soft clay assessment and soil stabilization methods. A graduate of Cornell University, she previously held leadership roles in the Society of Women Engineers.
Jon Whiting
Geotechnical Engineer
Specializing in geostructural projects, Jon focuses on retaining walls, coffer dams, and waterfront bulkheads. With prior construction industry experience, he applies practical insights to solve complex geotechnical problems while fostering collaborative client relationships at McMahon & Mann.
Corey Hensen
Geologist
Corey specializes in multidisciplinary geologic problems, applying regional mapping and stratigraphic analysis to slope stability and dam remediation projects. With a Ph.D. from Cornell University, he contributes advanced expertise in sedimentary rock deposition models and subsurface data integration.
Joshua Cardamone
Civil Engineer
Recent SUNY Buffalo graduate specializing in geotechnical engineering, Joshua brings fresh expertise in foundation design and subsurface exploration. Prior experience includes New York State Department of Transportation projects and national steel bridge competition participation.
Todd Swackhamer
Senior Engineer
With 25+ years of experience, Todd specializes in dams, embankments, and landslide remediation. As a partner in the firm's ownership transition, he combines technical expertise with leadership in geotechnical project management and community engagement initiatives.
Questions
What engineering services does McMahon & Mann specialize in?
We specialize in geotechnical engineering, environmental remediation, dam engineering, foundation design, and slope stabilization projects across New York and the eastern United States.
How long has McMahon & Mann been in business?
Our firm has provided engineering and geology consultation services since 1993, with many team members having decades of industry experience.
What areas do you serve?
We primarily serve New York State and the eastern United States, handling projects from small local infrastructure to large-scale regional developments.
Are your engineers licensed professionals?
Yes, our team includes nine licensed professional engineers and one professional geologist with certifications in New York State.
What makes McMahon & Mann different from other engineering firms?
We combine 30+ years of geotechnical expertise with a collaborative approach, maintaining involvement from project planning through construction monitoring for comprehensive solutions.
Can you handle both public and private sector projects?
Yes, we work with private industry, architects, contractors, and public agencies at all government levels for diverse infrastructure and environmental projects.