Soaking in Another Victory

by Tom Damm

It’s a four-peat.

For the fourth consecutive year, the University of Maryland, College Park has won high honors in EPA’s Campus RainWorks Challenge, a national collegiate competition to design the best ideas for capturing stormwater on campus before it can harm waterways.

A UMD team took second place nationally in the Master Plan category for “The Champion Gateway” project.  The project blends green infrastructure features into a campus entryway and pedestrian corridor adjacent to a proposed light rail system.

Along with providing more aesthetic appeal, the 7.9-acre site design – with its 367 new trees, permeable pavement, bioswales, rain garden and soil improvements – generates some heady environmental benefits, like:

  • A 40 percent increase in tree canopy and a reduction in stormwater runoff of 44 percent.
  • An increase in permeable surface from 5 to 74 percent.
  • The removal of 273 pounds of air pollutants and the sequestering of 20,000 pounds of carbon dioxide – each year.

Green infrastructure allows stormwater to soak in rather than run off hard surfaces with contaminants in tow, flooding local streets and polluting local waters.

Chalking up impressive design numbers and wowing the judges is nothing new for UMD teams in the Campus RainWorks Challenge.

The university won first place awards in 2015 and 2016 for designs to retrofit a five-acre parking lot and to capture and treat stormwater on a seven-acre site next to the campus chapel, and won a second place award last year for its “(Un)loading Nutrients” design to transform a campus loading dock and adjacent parking lot into a safer pedestrian walkway with 6,660 square feet of plantings and 18 percent less impervious surface.

Dr. Victoria Chanse, a faculty advisor to all four UMD winning teams, said the competition “serves as an ongoing catalyst to encourage universities to develop innovative, sustainable learning landscapes that draw upon collaborations among students and faculty from a diverse set of disciplines.”

Check out more information on how stormwater runoff impacts your community.

 

About the Author: Tom Damm has been with EPA since 2002 and now serves as communications coordinator for the region’s Water Protection Division

Editor's Note: The views expressed here are intended to explain EPA policy. They do not change anyone's rights or obligations. You may share this post. However, please do not change the title or the content, or remove EPA’s identity as the author. If you do make substantive changes, please do not attribute the edited title or content to EPA or the author.

EPA's official web site is www.epa.gov. Some links on this page may redirect users from the EPA website to specific content on a non-EPA, third-party site. In doing so, EPA is directing you only to the specific content referenced at the time of publication, not to any other content that may appear on the same webpage or elsewhere on the third-party site, or be added at a later date.

EPA is providing this link for informational purposes only. EPA cannot attest to the accuracy of non-EPA information provided by any third-party sites or any other linked site. EPA does not endorse any non-government websites, companies, internet applications or any policies or information expressed therein.

Why Are There Trees in This Parking Lot Instead of More Parking Spots?

Do you ever drive to the store only to find you can’t find a spot to park in?  It’s bad enough that prime parking spots are taken up by Cart Corrals or car-share companies—but now more new parking lots are being designed with planted sidewalk areas in place of more parking spots.  Yeah, the trees are nice, cleaning up the air and all that, and the shrubs and flowers are pretty, but what else are they good for?  A lot, actually, in terms of stormwater management.

You know how you walk through a parking lot in the rain and the water either pools into the only convenient areas to walk safely through said parking lot, or there’s hardly any water on the ground anywhere?  An incorrectly graded parking lot allows the water to pool, while a correctly graded parking lot will drain the water right away.  In that correctly graded parking lot, the water drains right into the storm drain—and discharges directly without treatment to local waters.  While water is running though the parking lot, it picks up dirt, trash, and other pollutants, including motor oil, antifreeze, and air conditioner condensate.  These pollutants also go into the local waters. 

One way to tackle this stormwater problem is to design new parking lots with planting areas.  If you’re working with an existing parking lot, you can do something called “retrofitting.”  Retrofitting is the practice of upgrading an existing area using new technologies that were not available when the area was initially developed.  If a parking lot is being redone, or a township is looking for ways to decrease the amount of impervious surfaces in their area, planting beds are a great way to reduce impervious surfaces and increase stormwater infiltration, retention, and evaporation. 

Choosing certain kinds of plants and or trees will not only promote infiltration of water into soil, but the plants will also hold water on their leaves to then evaporate back into the atmosphere at a later time, keeping water off the ground in the first place.  Although planting beds have to be watered when precipitation events do not occur, the beds are oftentimes mulched, which means more water retention and less watering in the interim.  And not to make light of the litter problem, but planting beds and trees also help catch rough trash that travels in the wind.  Trash captured by these planting beds doesn’t end up in the streams of water that enter storm drains, and the beds are easy to clean up and remove the trash from the environment. 

You can also retrofit at home.  If you are lucky enough to have a driveway, the next time it has to be redone, think about tearing it up and putting a pervious surface down. Pervious surfaces are those that allow infiltration of stormwater, in contrast to impervious surfaces which promote storm water runoff. There are lots of pervious options to choose from, including vegetation (yes, vegetation!), paving blocks, bricks, permeable clay, crushed organic matter, and aggregate/gravel (which can be made from recycled asphalt—i.e., the pavement you just tore up).  All of these materials reduce the amount of water that runs into storm drains and increases infiltration—which means less pollution and a cleaner environment.

Do you know of any examples of retrofitting in your area?  Have you retrofitted your driveway without even knowing it?  Are there any volunteer opportunities out there to help retrofit storm basins in your community?  If so, let us know!  We’d love to hear from you.

Editor's Note: The views expressed here are intended to explain EPA policy. They do not change anyone's rights or obligations. You may share this post. However, please do not change the title or the content, or remove EPA’s identity as the author. If you do make substantive changes, please do not attribute the edited title or content to EPA or the author.

EPA's official web site is www.epa.gov. Some links on this page may redirect users from the EPA website to specific content on a non-EPA, third-party site. In doing so, EPA is directing you only to the specific content referenced at the time of publication, not to any other content that may appear on the same webpage or elsewhere on the third-party site, or be added at a later date.

EPA is providing this link for informational purposes only. EPA cannot attest to the accuracy of non-EPA information provided by any third-party sites or any other linked site. EPA does not endorse any non-government websites, companies, internet applications or any policies or information expressed therein.