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General Services

113 Tewning Rd.
Williamsburg, VA 23188

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P: 757-259-4080
F: 757-258-1528


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Clara Byrd Baker Stormwater Retrofits

April 2014

Scope of Work

This project consists of the renovation and retrofit of the stormwater treatment facilities at the Clara Byrd Baker Elementary School.  The primary stormwater detention BMP collects runoff from a portion of the entrance drive and the entire school parking lot.  In observing the BMP, it is evident that the BMP has become less effective functionally with significant sediment accumulations, trees on the embankment, evidence of ‘piping’ or burrowing animals on the embankment, sinkholes around stormwater structures and poorly implemented riser structure configuration.  This project will correct the deficiencies in the current condition of the facility and make retrofits to enhance the efficiency of the BMP.  Additionally three infiltration BMP’s were installed around the school to collect bus loop and roof runoff.  The infiltration BMP’s have failed and may be backing up roof runoff.  For replacement of these failed BMP’s, other LID retrofits, such as bioretention/rain gardens or dry swales will be considered to maximize stormwater treatment credits. The project design will focus on providing improved water quality benefits and contribute to meeting the County’s permit obligations for the Chesapeake Bay Total Maximum Daily Load (CBTMDL) reductions.

Status of Project

AES Consulting Engineers completed an options analysis for repair of the existing BMP and overall stormwater management for the school.  Whitman Requardt and Associates has been retained to take the next step to provide a final retrofit plan.

Clara Byrd Baker Site
Clara Byrd Baker BMP

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Civil Engineering Design   -   Underway
Bidding Phase   -  Summer 2014

Budget  -  $190K Approved

Whitman Requardt and Associates - $16,653
Contract Amount and percent completed -   $ 0 – 0 percent
AES Consulting Engineers - $5,592
Contract Amount and percent completed -   $5,592 – 100 percent



  • None to date.


Next Steps

  • Complete engineering design and construction plans.


Project Issues

  • The necessary work will need to be performed in an environmentally sensitive area.
  • Coordination with 2016 parking lot renovation


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