Entries by imported

Recent Guidance on Vapor Intrusion – EPA, Washington State, Hawaii, and Oregon

Vapor intrusion occurs when there is a migration of vapor-forming chemicals from any subsurface source into an overlying building. The vapors can enter buildings through cracks in basements and foundations, or through conduits and other openings. Examples of vapor-forming chemicals that are hazardous to human health include methane (from landfills), tetrachloroethene (PCE) and trichloroethene (TCE) […]

There’s a Volcano on our Project Site

Water is the life blood of any city, but its systems are not always pretty. So the two-million-gallon Forest Park Low Tank was embedded into the hillside to preserve the natural character of the area and leave unfettered views. However, this presented engineering challenges. Overcoming those challenges helped us win a 2017 Grand Award from […]

Preserving Eelgrass While Remediating Legacy Contamination

What do you do when the State requires you to take action, yet prohibits that action? It’s a conundrum that takes imagination and determination. The Setup For over 100 years, several companies used the nearshore at the former Custom Plywood site for processing and manufacturing wood-related materials that would be used nationwide. They filled the […]

Volunteering with the Children of the Night

Nick Galvin, Hart Crowser environmental scientist, is in Guatemala with his family to volunteer for the Xeroderma Pigmentosum Project. A bumpy two hours from the nearest “town” of Santa Cruz Barillas, a padlocked chain stretches across the one-lane dirt road. The volunteer team’s diesel Land Cruiser rumbles to a halt. Another Guatemalan road toll. The […]

Diving In – The Promise of Social Marketing for Storm Water Education

  Individuals have a direct influence on storm water quality in their communities, and regulators strongly emphasize public education and involvement campaigns in municipal storm water management programs. But how can leaders convince residents to pick up after pets, reduce lawn pesticide use, and wash cars without getting soapy water in storm drains? And how […]

Why an Earthquake Warning System Should Not Be a Priority In The Pacific Northwest

The newest and hottest topics when it comes to disaster discussions in Oregon and Washington, as well as on the national level, are an earthquake warning system and earthquake prediction possibilities. They are the new obsession that has come on the heels of the New Yorker articles this summer. While we don’t object to advancing […]

Invasions are not just military (Part 2)

  In a previous post about invasive species, we learned what invasion meant and who the invaders look like. Now let’s discuss how invasive species get a foot hold in the first place and what can be done about it. How Invasions Happen Invasive species can be introduced intentionally or unintentionally. They may be introduced […]