Exercising innovation and quality
with unparalleled integrity, Walden excels
at meeting the demands of protecting the environment while sustaining business progress.

Our Services

Walden provides innovative engineering and environmental consulting and design services in seven primary markets


What makes us different

Walden’s founder and Principal sought to provide superior technical expertise, personalized attention to clients’ needs, and outstanding results in a cost-conscious manner. These guiding principles drive us to continually expand our capabilities
and provide extraordinary service to satisfy our clients.

Innovative Engineering


Exceptional Service


Creative Solutions


Impressive Results


More About Us


Case Studies

Structural Inspection of MOSF Tanks

Posted by J. Heaney

Walden was retained to evaluate existing tanks and provide recommendations for their removal, abandonment, and replacement to suit our client’s needs at a Major Oil Storage Facility (MOSF).

  • Environmental Consulting
  • Environmental Engineering
  • Civil Engineering
More Case Studies


  • As the Town of Hempstead’s primary environmental consultant since 1995, Walden always tries to improve Town operations, manage costs, gain regulatory compliance, foster good working relationship with regulators, and ensure projects’ budgets and schedules are met. Walden’s staff are qualified and committed to providing excellent service.

    John Gibilaro
    Supervisor of Building Operations
    Town of Hempstead, NY
  • Walden has served us for more than a decade on our compliance and tank needs. They always complete their work in a professional manner and in the highest quality. From regulatory agency interaction, to spill response and tank permitting, their engineering staff is always responsive, thoughtful, and confident – I look forward to continue working with them in the future.

    Municipal Water Supplier
    Long Island, NY
  • I have worked with Walden on a number of successful projects. The professionalism of their staff and their attention to detail is exemplary. The end product is always a win-win. I wouldn’t hesitate to use them for future projects.

    Massapequa Park
    Incorporated Village of Massapequa Park, NY

Latest Articles

Long Island Groundwater 22 Feb Update: Long Island’s 1,4-Dioxane Issue
Posted by Greta White

Cancer-causing Chemical Is Present in Long Island Groundwater and Drinking Water Samples Last year, New…

Cooling Systems must be tested for legionella before start up 20 Feb Cooling Season is Approaching – Is Your Building Protected From Legionella?
Posted by Peter Brighton

New York State Legionella Testing for 2018 Cooling Season Starts Soon “But, it’s only February!…

Indoor Air Quality Testing 15 Feb What is Soil Vapor Intrusion, and Why Should We Be Concerned?
Posted by Kristin Scroope

How Can Environmental Contamination Affect You? Soil Vapor Intrusion Subsurface contamination, whether stemming from hazardous…

Groundwater Sampling 13 Feb PFOS Contamination is Back in the News – Now, on Long Island
Posted by Greta White

Suspected MacArthur Airport Groundwater Contamination Islip, NY Recent PFOA and PFOS Contaminant History Poly- and…

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Our Offices

Long Island

16 Spring Street
Oyster Bay, NY 11771

P: 516.624.7200  |  F: 516.624.3219

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Capital District

12 Sandstone Drive
Burnt Hills, NY 12027

P: 518.698.3012

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Hudson Valley

3 Moss Drive
Brewster, NY 10509

P: 845.745.0888

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