miller heights outfall rehabilitation project 2014
DESCRIPTION
Miller Heights Outfall Rehabilitation Project 2014TRANSCRIPT
A Fairfax County, VA, publication
Department of Public Works and Environmental Services
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Miller Heights Outfall Rehabilitation ProjectContract No. CN14125112Project No. SD-000031-068Task Order No. 10Providence District
August 25, 2014
Miller Heights Outfall Rehabilitation Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Project DetailsMiller Heights Outfall Rehabilitation Project
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Description:
The Miller Heights Outfall Rehabilitation project was substantially completed on August 7, 2014, on time and within the budget. The project consists of stabilization of over 250 feet of eroded channel located near the intersection of Miller Road and Miller Heights Road. The goals of the outfall project were to address public safety concerns, stabilize a deeply eroded channel by using natural stream channel design, and provide enhanced water quality.
Project Overview:• Constructed a plunge pool below the existing culvert.• Utilizing a natural stream channel design method, six (6) single step rock cross vanes and four (4)
rock weirs were installed to allow a gradual change in the channel elevation and provided additional water quality benefits.
• Restored the site with seed mix, trees will be planted at the end of Sept. 2014. • Water quality benefits obtained include 34 (lbs./yr.) total phosphorus, 124 (lbs./yr.) total nitrogen,
and 64,820 (lbs./yr.) total suspended solids.
Project Team:• Stormwater and Planning Division – Fred Wilkins• Utilities Design and Construction Division - Yousef Rayyan• Utilities Design and Construction Division - Bharat Khanal
Miller Heights Outfall Rehabilitation Project
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Providence District, VA, Tax Map #47-1
Project Site Location
Miller Heights Outfall Rehabilitation Project
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Pre-Existing Conditions
Severely Eroded Channel Banks
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Miller Height Outfall Rehabilitation Project
Post Construction
Cross Vane and Step Weir Rock StructuresChannel Banks were Stabilized by Coir Matting and Seed Mix
Miller Heights Outfall Rehabilitation Project
Pre-Existing Conditions of the Plunge Pool Location
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Miller Heights Outfall Rehabilitation Project Post Construction-Plunge Pool and Step Weir
Plunge Pool Armored Channel with Reinforced Bed Mix
Miller Height Outfall Rehabilitation Project Post-Construction
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Before After
Miller Heights Outfall Rehabilitation Project
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Additional Information
For additional Information, please call
www.fairfaxcounty.gov/dpwes
Ben Boxer, Public Information Officer703-324-5880, TTY 711
Ben. Ben Boxer, Public Information Officer703-324-5880, TTY 711
Ben. Ben Boxer, Public Information Officer703-324-5880, TTY 711
Irene Haske, Public Information Officer703-324-5500, TTY [email protected]
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch