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Integrated Drainage Systems

Lawrence Technological University (LTU) is leading a collaboration of industry and academic partners in a multi-state demonstration project featuring the implementation of an innovative and scalable integrated drainage design that significantly mitigates polluted parking lot stormwater runoff. An integrated systems based approach for capturing and cleansing stormwater runoff is critical for protecting our Nations’ water resources and reducing human health concerns associated with combined sewer overflow (CSO) events in urban areas. An issue exacerbated by climate change which is bringing increased storm intensity and periling cities ability to manage stormwater and maintain water quality.

The integrated drainage system includes three separate patented technologies combined in a novel approach including a porous pavement surface (parking performance maintained), an underground engineered soil storage reservoir (for stormwater storage and water quality filtration) and an innovative drainage technology (to improve infiltration and reduce runoff). The integrated drainage system can replace 2.5 percent of the total parking lot impervious surface area and capture 90% of all rainfall events. After five installations (Michigan, Ohio, Florida, California, and Washington DC) and subsequent performance monitoring, Lawrence Tech expects to establish a national design protocol for advancing this novel integrated drainage system with a goal of improving water quality through innovation and regional technology transfer.

How does it work?

From the surface the project looks similar to a traditional parking lot, but the typical drainage system has been replaced. The top layer of the system is about the size of two parking spots and is covered in a type of porous pavement called Xeripave. Under the Xeripave is a six-foot deep excavation (20 ft x 25 ft) that has been filled with haydite stone to store up to an inch of rain. Underneath the layer of stone are Parjana EGRPs. The EGRPs balance soil moisture and facilitate water movement between horizontal soil layers.

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Use Your Cell Phone as a Document Camera in Zoom

  • What you will need to have and do
  • Download the mobile Zoom app (either App Store or Google Play)
  • Have your phone plugged in
  • Set up video stand phone holder

From Computer

Log in and start your Zoom session with participants

From Phone

  • Start the Zoom session on your phone app (suggest setting your phone to “Do not disturb” since your phone screen will be seen in Zoom)
  • Type in the Meeting ID and Join
  • Do not use phone audio option to avoid feedback
  • Select “share content” and “screen” to share your cell phone’s screen in your Zoom session
  • Select “start broadcast” from Zoom app. The home screen of your cell phone is now being shared with your participants.

To use your cell phone as a makeshift document camera

  • Open (swipe to switch apps) and select the camera app on your phone
  • Start in photo mode and aim the camera at whatever materials you would like to share
  • This is where you will have to position what you want to share to get the best view – but you will see ‘how you are doing’ in the main Zoom session.