Herrity Fountain Retrofit

Herrity Fountain Retrofit

Project Team
Fairfax County Department of Public Works and Environmental Services Wetland Studies and Solutions, Inc. EQR, Inc.
Project Description

The Herrity Fountain retrofit project demonstrates how innovation and teamwork can result in stormwater management that is truly integrated into public spaces to achieve multiple objectives. A much needed renovation of a malfunctioning fountain and reflecting pool evolved into an opportunity to showcase and test emerging green infrastructure technologies, including four stormwater best management practices (BMPs) and over 5000 native perennial forbs, grasses, shrubs and trees.

Buried beneath the plaza a 15,000-gallon cistern that captures rainwater flowing off the Herrity parking garage roof. A small pump uses a fraction of the energy that the former fountain’s pump used and taps into the underground reservoir to create a decorative bubbling fountain in the center of the plaza. An innovative feature of the rainwater harvesting system is the replacement of coarse sand in the filtering media with crushed, recycled glass resulting in a cost savings of $22,000. The crushed glass was provided through a unique collaboration with the County’s Solid Waste Management Division in Lorton, VA where glass collected throughout the region in “purple dumpsters” is crushed for reuse.

Also part of the design are two bioretention tree pits that treat a portion of the driveway and sidewalks leading into the government buildings. The performance of the bioretention cells will be monitored in a collaborative effort between the County’s Urban Forest Management Division (UFMD) and researchers from Virginia Polytechnic University to evaluate health and growth of trees in these systems.

Best BMP Retrofit

This category recognizes the best stormwater projects constructed in the last five years to improve runoff quality from areas that were developed in the past without effective stormwater treatment. The retrofit can involve either modifications to an existing stormwater BMP or construction of new BMP.

Gallery

Attachment

Project Narrative
Download Now

Related Award Category

2017
2nd Place

Quail Meadows Stormwater Management Retrofit

This project involved the retrofit of an existing wet detention facility by diverting stormflows from a local stream into a wet extended detention facility,...
Read More
St. Luke’s Church Restoration of Nature
2019
2nd Place

St. Luke’s Church Restoration of Nature

The St. Luke’s Restoration of Nature Project began with a new church member who spotted a degraded stormwater outfall and is now a comprehensive...
Read More
MedStar Harbor Hospital Clean Water Community Healing Project
2019
3rd Place

MedStar Harbor Hospital Clean Water Community Healing Project

The Clean Water Community Healing Project retrofitted the hospital’s four major parking lots with two raingardens, nine micro-bioretention areas, three bioretention areas, 16,724 sf...
Read More