woodglen lake dredging and restoration

A Fairfax County, VA, publication

Department of Public Works and Environmental Services

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Woodglen Lake Dredging and RestorationContract Number CN14125106Project Number SD-000033-021Braddock District

March 25, 2016

Woodglen Lake Dredging and Restoration

Capital Facilities / Utilities Design and Construction Division / Transportation and Stormwater Construction Branch

Project DetailsWoodglen Lake Dredging and Restoration


Description:The Woodglen Lake Dredging & Restoration project was substantially completed on November 18, 2015. The project consisted of removing sediment from the lake; stream restoration above the lake, improving an existing access road to the lake, landscape planting and trail modifications around the lake, constructing a staging area and sediment forebay to simplify future dredging operations, and modifications and repairs for the lake’s principal spillway. Additionally, this project demonstrated the feasibility of spreading dredged sediment as topsoil at the County-Owned I-95 Landfill Complex rather than paying disposal fees to dump this material in other landfills – a significant cost saving to the County. Project Overview:• Remove sediment from a stormwater management lake constructed in 1981, in the Braddock District of

Fairfax County, Virginia• Worked with the I-95 Landfill Complex staff to provide an innovative sediment disposal method• Worked with the Fairfax County Park Authority staff to improve the landscaping and public access to the lake

Project Team:• Stormwater Planning Division - Dipmani Kumar• I-95 Landfill Complex – John Kellas• Maintenance & Stormwater Management Division - Don Lacquement• Fairfax County Park Authority - Ed. Richardson• Land Acquisition Division - Carol Kresge• Utilities Design and Construction Division (UDCD) - James Horstman• Project Inspector, UDCD - Paul Thaler• Survey Analyst, UDCD - Gregory Harper


Project Benefits

• Removed over 40,000 CY of sediment• Facilitated future maintenance dredging operations by:

• Providing a 9,000 CY sediment forebay• Improving the existing access road• Providing truck staging areas

• Provided improvements and repairs for the principal spillway riser• Installed fish habitat structures within the lake• Provides the following annual (estimated ) reductions in the downstream

sediment and nutrient loadings:• Total Suspended Solids (TSS) 14.6 tons/year• Total Nitrogen (TN) 1,075 lbs/year• Total Phosphorus (TP) 67 lbs/year



Tax Map 68-3 and 77-1

PROJECT LOCATION



The Lake After Draining



Sediment Near the Forebay – To Be Removed



Sediment Being Loaded



Forebay Separation Dike



Modifications & Repairs – Principal Spillway Riser



Stream Restoration Work – Lake Inlet



Planting

Additional Information

For additional Information, please call

www.fairfaxcounty.gov/dpwes



Irene Haske, Public Information Officer703-324-5821, TTY 711

[email protected]

woodglen lake dredging and restoration

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