Category Archives: Research

Getting ready for new stormwater rules

Herrera is testing to see whether new soil mixes can remove
more heavy metals and other pollutants from stormwater.

Herrera is conducting groundbreaking research to assess and optimize the performance of LID systems.

Herrera is conducting groundbreaking research to assess and optimize the performance of LID systems.

With all the cranes towering overhead in downtown Seattle, it’s easy to forget the important work going on below to manage and protect our water as the region grows.

To keep pace with this growth, Washington State is pioneering the use of new and innovative approaches for stormwater management.  As of next year all development projects must use low impact development (LID) techniques or green stormwater infrastructure where feasible.  Rain gardens, bioswales, green roofs, and permeable pavement will become the norm rather than the exception.

As the region makes this new investment to protect our water, everyone – regulators, project owners, designers, and the general public included – will want to be confident these technologies are providing the intended benefit.

Herrera Environmental Consultants, Inc. is conducting groundbreaking research to assess and optimize the performance of these systems.

For example, with grant funding from the Washington State Department of Ecology, Herrera is currently implementing two research projects to develop a more effective soil media for use in bioretention systems.

In partnership with Kitsap County, one of these projects has involved numerous pilot scale tests of soil media components and blends to optimize their removal of heavy metals and other harmful pollutants from stormwater.

Herrera has also partnered with the City of Redmond to construct a state-of-the-art research facility for evaluating pollutant removal and plant growth in bioretention systems at full-scale.

Herrera Environmental Consultants, Inc. is an employee-owned engineering and scientific firm focused on restoration, water, and sustainable development.  Herrera is committed to working with our clients to develop innovative and sustainable solutions for infrastructure, natural resources, and stormwater projects.  Herrera was recently featured as “favorite green collar company” by the Seattle Times.

For more information:
Melissa Buttin, Senior Marketing,  206.787.8248

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What’s missing in green buildings? Training

The following post is from Washington State University:

More than one-third of new commercial building space includes energy-saving features, but without training or an operator’s manual many occupants are in the dark about how to use them.

Julia Day recently published a paper in Building and Environment that for the first time shows that occupants who had effective training in using the features of their high-performance buildings were more satisfied with their work environments. Day did the work as a doctoral student at Washington State University; she is now an assistant professor at Kansas State University.

Julia Day

She was a WSU graduate student in interior design when she walked into an office supposedly designed for energy efficiency and noticed that the blinds were all closed and numerous lights were turned on. The building had been designed to use daylighting strategies to save energy from electric lighting.

After inquiring, Day learned that cabinetry and systems furniture throughout the building blocked nearly half of the occupants from access to the blind controls. Only a few determined folks would climb on or under their desks to operate the blinds.

“People couldn’t turn off their lights, and that was the whole point of implementing daylighting in the first place,” she said. “The whole experience started me on my path.”

Working with David Gunderson, professor in the WSU School of Design and Construction, Day looked at more than 50 high-performance buildings across the U.S. She gathered data, including their architectural and engineering plans, and did interviews and surveys of building occupants.

She examined how people were being trained in the buildings and whether their training was effective. Sometimes, she learned, the features were simply mentioned in a meeting or a quick email was sent to everyone, and people did not truly understand how their actions could affect the building’s overall energy use.

Green-building occupants aren't always taught how to use the building's energy-saving features.

One LEED gold building had lights throughout to indicate the best times of day to open and close windows to take advantage of natural ventilation. A green light indicated it was time to open windows.

“I asked 15 people if they knew what the light meant, and they all thought it was part of the fire alarm system,” she said. “There’s a gap, and people do not really understand these buildings.”

According to CBRE Research, the amount of commercial space that is certified as high-performance in energy efficiency through the U.S. Environmental Protection Agency’s Energy Star or U.S. Green Building Council’s LEED has grown from 5.6 percent of commercial space in 2005 to 39.3 percent at the end of 2013.

Yet in many cases, the corporate culture of energy use in buildings hasn’t caught up. While at home our mothers nagged us to turn off the lights when we left a room or to shut the door because “you don’t live in a barn,” office culture has often ignored and even discouraged common-sense energy saving.

Day found that making the best use of a highly efficient building means carefully creating a culture focused on conservation. In buildings with an energy-focused culture, workers were engaged, participated and were satisfied with their building environment.

“If they received good training, they were more satisfied and happier with their work environment,” she said.

She is working to develop an energy lab and would like to develop occupant training programs to take advantage of high-performance buildings.

“With stricter energy codes, the expectations are that buildings will be more energy efficient and sustainable,” she said. “But we have to get out of the mindset where we are not actively engaged in our environments. That shift takes a lot of education, and there is a huge gap right now.”

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Study makes a case for developing more living buildings

The following post is by Kathleen O’Brien:

In early May, I traveled to Portland to the Cascadia Green Building Council’s annual Living Future Conference. I enjoyed the conference a lot, and especially the very practical financial focus in several of the sessions.


Moving the needle on real estate investment was the topic of a Living Future panel including Jason Twill (Vulcan), David Baker (Earth Economics), Theddi Wright Chappell (Cushman & Wakefield), Stuart Cowan (Autopoiesis). They noted that investment in sustainable real estate seems to be “topping out” in the market at this time — at LEED Platinum. Their hope is to help the market cross that barrier into higher realms of sustainable achievement, such as the Living Building Challenge.
Jason, David, Stuart, and Theddi are coauthors of “Economics of Change: Catalyzing the Investment Shift Towards a Restorative Built Environment.” The research study was funded by Bullitt Foundation, a long time supporter of environmental protection in the Northwest. The point of the study was to “provide evidence of monetized environmental and social benefits…currently not considered in conventional real estate model(s).” The authors hope to provide a defensible rationale for including these public and private benefits into investment models, appraiser methodologies, and supporting policies. This is especially important for U.S. real estate investments where ROI and IRR are the ultimate drivers of most transactions.
The report lays out the ABC’s, if you will, of Ecosystem Goods and Services, the potential Ecosystem Services that Living Buildings might provide, and finally the opportunity to measure, monetize, and value those ecosystem services. The study takes a scholarly approach, a step up from the early days when we in the green building field had to rely more on reason and intuition, since we had little real data to base our assumptions on. (Not that reason and intuition is bad…it’s what got us here, yes?).

"The Economics of Change"

The report also introduces the concept of integrated real estate investment modeling. From this layperson’s view, it seems to build on the conventional model, rather than replace it — an approach that makes a good deal of sense. The methodology they propose will allow many environmental and social benefits currently valued at zero to be seen as economically valuable, and therefore marketable. In the next phase of their work, they plan to produce detailed calculations and case studies of the environmental and social benefits of Living Buildings, test the impact of these values of valuation models or appraisals, and create an open source prototype of the integrated real estate investment marketing tool to “demonstrate how environmental and social benefits can be embedded within a pro forma in an new building development context.”
In addition to taking this tool out to the real estate development communities (appraisers and valuation specialists), they hope to provide a basis for changes in local, state, and federal policy that will acknowledge public benefits of Living Building development and incentivize it.
As Theddi noted, “right now investors are going for the low hanging fruit — energy efficiency — for example. We need to provide sufficient rationale if we want them to go beyond that.”

Hear, hear.

Kathleen O’Brien is a long time advocate for green building and sustainable development since before it was “cool.” She lives in a green home, and drives a hybrid when she drives at all. Having recently sold her firm, O’Brien & Company, she is now focused on leadership work with those “still in the trenches.”  For more info see

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Read the DJC’s free Building Green Special Section

If you don’t have a subscription to the DJC or don’t click on our articles as they are locked, you might not know about our free special sections.

Special sections, written by people in a targeted industry for people in the industry, are free to read, meaning even you non-subscribers can access valuable information. Special sections come out about once a month and each section focuses on a different topic. This month’s excellent topic is Building Green and I am thoroughly impressed with the breadth of this year’s coverage.

The free special section is here.

In it, you’ll find this excellent article by Michelle Rosenberger and Nancy Henderson of ArchEcology called “Watch out for ‘greenwashing’ by service providers.” Among its interesting points, the article examines whether consultants can truly bring a LEED approach to a project without rigorous third party LEED certification.  Interesting item to bring up.

There’s this article by Constance Wilde of CB Richard Ellis reflecting on her personal experience of  becoming a Certified Green Broker, and its values and benefits.

There’s this great article by Joel Sisolak of the Cascadia Green Building Council called “Two Seattle projects set ‘net-zero’ water goals,” which looks at the region’s water infrastructure and two living buildings (The Bertschi School’s Science Wing and the Cascadia Center for Sustainable Design and Construction, both covered previously in this blog)  that plan to go off the water grid and their challenges in doing so.

Then there’s this article by Elizabeth Powers at O’Brien & Co. on whether green parking lots can be (gasp!) green. I’ll let you read the article to learn more.

The section also has articles from representatives of Skanska USA Building, Mithun, MulvannyG2, GGLO, Scott Surdyke, Sandra Mallory of the city of Seattle and CollinsWoerman on topics ranging from the city’s role in evolving practices to big box stores, student housing and public housing.

So go ahead, check it out and enjoy!

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King County develops new, green ‘EcoCribz’ video series

Yesterday, King County launched a video series called ‘EcoCribz.’ The series follows one family as they green-remodel their house and aims to teach viewers – you and I – valuable lessons while aiming us towards other green remodeling resources.

The first video, available here, profiles the Bangs family and their Issaquah home. It’s a fun tour that

Image courtesy King County
documents the family’s goal to create a more energy efficient home with better air quality.

Patti Southard, project manager for King County’s GreenTools Program and host of the series, said King County wanted to show people that green home remodeling creates healthy, comfortable spaces that can save money, increase home value and help protect the environment. The county also created helpful remodel tips for renters who are looking at paint and interior options like area rugs and eco-friendly bedding.

The series also illustrates how homeowners can use the county’s Eco-Cool Remodel Tool, another useful resource. Basically, it’s trying to get you to think about your choices before you remodel or build to create a greener space.

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