HMMH provides innovative solutions for a better future

You can rely on HMMH to address your environmental challenges
in every market that we serve, worldwide.

Technical excellence, true collaboration, and innovation are the foundation
of every project we complete.

Our Markets

Aviation

With a strong track record of over 40 years of successful consulting and research projects, HMMH partners with our clients, providing trusted expertise to address some of aviation’s biggest challenges.

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Noise and Vibration Solutions for Rail Projects and Urban Bus Rapid Transit Systems

Rail & Transit

Sustainable solutions to keep our cities moving.
HMMH has provided noise and vibration assessments and mitigation recommendations for transit and rail transportation systems across the U.S. for over three decades.

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Highway

HMMH helps our clients engineer cleaner, quieter highways with creative solutions for even the most congested transportation corridors.

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Federal Programs

Since 1981, our federal clients have relied on HMMH personnel for expert modeling, analyses and advice.

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Additional Markets
Sustainability & Energy
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 Construction & Architecture
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 Parks & Recreation
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HMMH is a trusted leader in the study, assessment, and mitigation of the impacts of new and existing transportation projects on communities.

Recent Blog Posts HMMH: Celebrating 40 Years of Technical Excellence and Client Satisfaction

Today marks 40 years since HMMH’s founding. HMMH has changed tremendously over the course of four decades—expanding markets, expanding offices, reflecting…

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Recent News FAA Opens Public Comment Period on Noise Policy Review

On May 1, 2023 in the Federal Register, the Federal Aviation Administration (FAA) published a “Request for Comments on the Federal…

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Recent Presentations & Papers Facilitating Community Acceptance of Urban Air Mobility

The first two decades of the twenty-first century have seen an increasing rate of urbanization. According to the United Nations, in…

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HMMH provides best in the business noise consulting services, which has enabled Louisville Regional Airport Authority to continually assess and improve aircraft noise in our community neighborhoods surrounding the Louisville Muhammad Ali International Airport. Due to their unparalleled expertise and ability to comprehensively communicate the difficult subject of noise, HMMH continues to provide LRAA and our Community Noise Forum upon request with timely, accurate and easily understood information. I have no hesitation recommending HMMH to help your airport address community noise concerns because frankly they do it right.

- Vice President, Planning & Facilities, Louisville Regional Airport Authority

HMMH has supported Massport for over 30 years providing technical analyses for a wide variety of projects at our airports. I confidently recommend HMMH to provide high quality environmental services in a timely and efficient manner. They are truly experts in their field.

- Senior Project Manager, Massachusetts Port Authority

HMMH did a first-rate job. The results of the study were exactly what we were looking for to help strike a balance between the rights of residents and the need for a local business to thrive and foster the area’s tourism industry. HMMH would be my first call when faced with a similar problem in the future.

- Page County Administrator, Shenandoah, VA

HMMH’s efforts were instrumental in the Authority’s ultimate success in providing an outstanding project that exceeded FAA requirements, met our noise-impacted community’s expectations and stayed within our budget. I would highly recommend HMMH to any airport that demands a successful, transparent and quality project.

- Former (Retired) Director, Airport Noise Mitigation, San Diego Regional Airport Authority

HMMH's understanding of state and federal requirements along with their responsiveness to project needs make HMMH the gold standard in their field.

- Project Manager, Stantec

HMMH is an extremely professional firm with excellent response time. Work is always of the highest caliber. The firm is trusted and respected by our citizens, staff and the Board of County Commissioners.

- Airport Director, Martin County Airport

HMMH consistently provided high quality products and their advice was invaluable in guiding the JPDO's effort to frame important policy issues to key government decision makers.

- Project Manager, JPDO

There is no other firm, in my opinion, that ranks as high as HMMH in their knowledge and expertise in all noise matters both nationally and internationally.

- Former (Retired) Director, Office of Environmental Services, Maryland Aviation Administration