City of Southfield Civic Center Municipal Parking Lot

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City of Southfield Civic Center Municipal
Parking Lot

• Economic, Innovative, Green
• Rhett Gronevelt, P.E., OHM
• Richard Angell, B L Landscaping

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Project Overview

• Background
• Deteriorated concrete pavement
• Base failure over 50 of parking lot
• Pavement settlement
• Drainage problems
• Design Objectives
• Rehabilitate the existing parking lot (pavement)
• Improve the sites sustainability
• Meet ADA requirements for accessibility
• Safety Improvements Vehicle Access
  (Pedestrians)

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Project Overview
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Traditional vs. Porous Asphalt

• Traditional Asphalt
• Impervious
• Conveys water to drainage system to point of
  discharge
• Porous Asphalt
• Pervious
• Provides water quality
• Reduces the amount of storm water run-off into
  the drainage system.
• Groundwater recharge

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Storm Water Bioswale

• Storm Water
• Storm Water Detention
• 17,000 cft provided

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Bioswale Cross Section
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Bioswale Plantings
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Bioswale Plantings
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Bioswale

• A typical bio-swale provides 30-80 pollutant
  removal including decreases in petroleum
  products, excess nutrients, metals and sediments
  that may be found in stormwater.

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Improving the Quality of Life

• Environmentally
• Porous pavement reduced the pollutants in
  stormwater runoff
• Alleviated flooding and contamination to
  streams
• Increased groundwater recharge
• Bioswale further decontaminates stormwater
• Accessibility Safety
• Improved barrier free pathways
• Decreased safety conflicts by rerouting the
  access road