October 2018 – Environmental Stewardship and Urban Infrastructure

October 28, 2018

Solid Waste Flows: The Polystyrene Challenge

Polystyrene, commonly known as Styrofoam, can take a million years to break down! That is a long time, and it can have a major impact on landfills as well as on our health. Currently polystyrene makes up about 30% of US landfills, but did you know it is actually recyclable. It doesn’t need to go to the landfill at all. In Canada about 35% of municipalities recycle polystyrene (Plastics.ca).

While there are a number of ways to work with polystyrene at the end of its life, the best course of action in to reduce its use. Polystyrene is used in almost every industry and has characteristics that make it good for storing and packaging items. As more alternatives become available for these uses, the first step should be to reduce its use. Vancouver is taking a lead in this area as they implement a Single Use Item Reduction Strategy (City of Vancouver, 2018).

When reduction has taken place and polystyrene is only being used when it absolutely needs to be, the best end of life strategy is to recycle it. As a product that is made up of 90% air, the challenge with recycling polystyrene is the transportation costs as it takes up a lot of space. A solution to this is to put it through a compactor process before shipping it to a recycling facility. This not only increases the amount that can be transported per truck by twenty times, but also increases the value of the recycled material (Plastics.ca). Once recycled, polystyrene, as a thermos plastic, is used in a number of applications including being shredded for further packaging or being condensed into picture frames and hangers (EcoMENA, 2013).

Overall polystyrene presents a challenge to the waste industry as it is commonly used and often misunderstood. Utilizing proper waste management techniques and looking at the processes set out in the Circular Economy framework, we can work together to reduce the waste in our landfills and redirect the polystyrene to a better end of life use.

Sources:

City of Vancouver. (2018) Single-Use Item Reduction Strategy. Retrieved from: https://vancouver.ca/green-vancouver/single-use-items.aspx

EcoMENA. (2013) Dealing With Polystyrene Wastes. Retrieved from: https://www.ecomena.org/polystyrene-wastes/

Plastics.ca. (N.D.) Polystyrene. Retrieved from: https://www.plastics.ca/PlasticTopics/RecyclingPlastics/RecyclingPlasticFacts/Polystyrene

October 16, 2018December 1, 2018

LEED: Not just for Residential and Commercial Infrastructure

It may be commonly thought that LEED standards and ratings can be applied exclusively to residential and commercial buildings. As the first LEED Platinum certified sports arena in the world, the Mercedes-Benz Stadium in Atlanta Georgia has proven that large scale sports infrastructure can also meet LEED standards. The arena scored the highest LEED ranking for sports venues in North America, meeting 88 of the 110 LEED rating criteria.

Under LEED criteria, large scale infrastructure projects are judged in the same manner as other infrastructure. The Mercedes-Benz Stadium was judged on seven categories:

Sustainable Sites
Water Efficiency
Energy & Atmosphere
Material & Resources
Indoor Environmental Quality
Innovation
Regional Priority Credits

Its Platinum ranking can be attributed to the many sustainable factors that were implemented into its design.

Renewable and efficient energy use through the implementation of LED lighting within the stadium and 4000 solar panels producing energy;
Infrastructure for alternative modes of transportation including biking, electric cars, and public transit;
Rainwater harvesting and flood-controlling infrastructure that can hold 2 million gallons of water;
Community partnerships with organizations to share and reuse captured rainwater for tree irrigation;
Partnerships with local organizations to promote local food production and education;
Green space for parking and cultural events.

The arena is expected to see long-term benefits and savings in both energy use and water consumption due to its sustainable infrastructure, programs, and design. Not only will the building itself benefit, the design’s larger-scale vision benefits the surrounding community through the community programs that have been established to promote health and economic well-being, and from its advanced stormwater management system, which was awarded full points in the LEED certification, that will aid in protecting the surrounding flood prone community.

The Mercedes-Benz stadium can be considered a leader in design and innovation for large-scale sports infrastructure and demonstrates to other sports developments that implementation of sustainable and responsible design and construction is something that can be done for any venue, no matter its purpose, size or scale.

Sources

Atlanta Falcons’ Stadium Scores Top Marks for Sustainability. (2018). Retrieved October 16, 2018, from http://plus.usgbc.org/mercedes-benz-stadium/

H. (2017, November 15). Mercedes-Benz Stadium Becomes North America’s First LEED Platinum Professional Sports Stadium. Retrieved October 16, 2018, from https://www.hok.com/about/news/2017/11/15/mercedes-benz-stadium-becomes-first-professional-sports-stadium-to-receive-leed-platinum-certification/

LEED BD C: New Construction v3 – LEED 2009 Mercedes-Benz Stadium. (n.d.). Retrieved October 16, 2018, from https://www.usgbc.org/projects/mercedesbenz-stadium

Sitz, M. (2017, December 20). Green and LEED-Certified Stadium Design. Retrieved October 16, 2018, from https://www.architecturalrecord.com/articles/13163-green-and-leed-certified-stadium-design

October 11, 2018October 11, 2018

Storm Water: A problem or a resource

Urban water, specifically storm water, is often viewed as a problem to be dealt with, but as the city of Vancouver and others are looking to achieve, it has the potential to be a resource that can provide value to the community. Most storm water starts out as rain, which is clean, fresh water, but once it reaches the surface it often becomes contaminated with debris and toxins found on the ground. The traditional method for dealing with this contamination is to either send it to a water treatment facility, or in some cases, to just discharge it to a larger water body. Is there a better solution?

Some cities have taken the innovative approach to utilize this water to their advantage. Cities like Edmonton, Canada have challenged developers to utilize the water in a way that increases its value, while also limiting the water discharge rate to pre-development levels. For Edmonton, this was achieved through the development of man-made ponds and lakes which can be surrounded by “Waterfront” homes. While the ponds can manage the storm water, the developer can benefit from increased land values. These Constructed Wetlands have been previously discussed and can be seen below.

While this technique works in land rich areas such as Edmonton, in Vancouver, it is more challenging, but can be implemented on a micro scale. Water is often seen as having a calming and peaceful energy to it and as such can provide a positive community feel. By introducing small water features to a community, it can boost the atmosphere as well as provide storm water management. Features like this have been built at UBC’s Wesbrook Village.

Figure 2: Water features at UBC’s Wesbrook Village provide a calm area for students

A more subtle way to create a natural feel while managing storm water is through the use of Rain Gardens and Infiltration Swales. These water features can be added to the built environment and allow for storm water to infiltrate into the ground and be naturally filtered. They are important for controlling surface runoff and treating the water quality onsite. These features can come in a variety of sizes and be aesthetically appealing while also providing ecosystem services. These management techniques are implemented around Vancouver and are part of their Integrated Storm Water Management Plan.

Figure 3: Vancouver’s Integrated Storm Water Management Plan Infiltration Swales

Overall there are a variety of methods which can be used to turn storm water into a resource which can enhance the community and the environment. Man-made ponds, water features and infiltration swales are just some of the possibilities. As each technique can be implemented in different situations, it is important to consult and work with the community to see which the best fit for a specific area is. The 17 Water-Wise Principals by the IWA outline some of the objectives that these features help to address. By utilizing these features a community can help to regenerate the natural water body, have a water sensitive design and create a water-wise community through engaging stakeholders.

Sources:

https://vancouver.ca/files/cov/integrated-stormwater-management-vision-principles-and-actions-volume-1.pdf

http://www.discoverwesbrook.com/

https://www.edmonton.ca/city_government/environmental_stewardship/water.aspx

http://www.iwa-network.org/projects/water-wise-cities/