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Walden Environmental Engineering’s highly experienced team of engineers, geologists and hydrogeologists are fully committed to solving your environmental challenges. In fact, our list of environmental consulting services continues to grow as we continuously explore new ways to help our clients achieve and maintain regulatory compliance.

From early concept design and grant writing to emergency response and lab testing, we’re dedicated to meeting our clients’ needs. Because we understand how much is at stake, we’re willing to do whatever it takes.

Learn how our core values of innovation, collaboration and responsiveness can help you on your next project.



Understanding Safety and Design Requirements of Below-the-Hook Lifters

What is a below-the-hook lifting device? A below-the-hook lifting device (BTHLD) is “a device used for attaching a load to a hoist” (ASME-B30.20). BTHLDs are also called “lifters” and “lifting devices.”   What is not a BTHLD? Shackles, links, rings, swivels,...

Walden Employees Complete “Smoke School”

On September 13, four of Walden’s employees attended “smoke school” to certify or recertify in the United States Environmental Protection Agency (USEPA) Method 9 Air Opacity of Visible Emissions. Those who attended and were recertified include Ethan Lo, Cari Covell,...

Diesel Not Recommended as a Solvent

People often ask if they can use diesel fuel (diesel) as a solvent or cleaner. The answer is unequivocally, no! Using diesel as a solvent to clean off asphalt and tar from trucks and equipment has long been a practice on construction job sites. It is even something...

Soil Vapor Intrusion and Indoor Air Quality Concerns

Dangerous chemicals in the air don’t just come from wildfires and smoke. Soil vapor can have a significant impact on indoor air quality. When soil and/or groundwater are contaminated by volatile organic compounds, these contaminants are released into soil vapor which...