A $2.1 million contract to restore Sparrow Pond in Glencarlyn Park is set for Arlington County Board consideration this weekend.
The planning of the Sparrow Pond restoration project began in the spring of 2019. It will add new stormwater management facilities while restoring the sediment-laden pond.
At its upcoming Saturday meeting, the Board is set to consider a contract with construction company Triangle Contracting that includes a base of about $1.8 million and a contingency of around $300,000.
Construction is now projected to take six to nine months to complete, wrapping up sometime in 2024, according to the county’s project webpage. With the project’s permitting phase now complete, construction is anticipated to start by the end of this summer or early this fall.
The work is necessary because the pond has become filled with sediment and overgrown vegetation since being built in 2001-2002, according to county staff.
“The project will convert the pond to a constructed wetland to restore its stormwater management functions, as well as improve water quality, increase wildlife habitat, and restore native plant species,” a staff report to the County Board said.
“Planned improvements include adding a forebay to accommodate accumulation and removal of sediments, a maintenance access path, a riser structure, and an outfall culvert to safely convey the stormwater runoff to the Four Mile Run stream during high storm events,” staff noted.
A community meeting, open to the public, will be held regarding construction plans before the project begins. The specific date of the meeting will be posted on the project webpage.
The restoration will benefit residents in the area of the pond, county staff said, along with W&OD Trail users and local wildlife.
Reducing sediment infiltration from stormwater and improving water quality will “restore the pond to the original depth,” the county said, and improve the “habitat for herons, ducks, turtles, frogs and fish.”