Huntsman Lake Dam Rehabilitation
Huntsman Lake Dredging and Restoration
Department of Public Works and Environmental Services Pardon Our Dust Meeting
Fairfax County, VA
Huntsman Lake Dam Rehabilitation
Huntsman Lake Dredging and Restoration
Department of Public Works and Environmental Services Pardon Our Dust Meeting
Fairfax County, VA
Long Branch Public Meeting - FINAL - 04-11-2022Fairfax County
Overarching Project Goals:
-Achieve Long Branch Central TMDL waste load reduction requirements.
-Provide long-term stability and have low maintenance.
-Improve water quality within the Long Branch Central Watershed.
-Improve habitat and environmental health (ecological lift).
Restore ~1,400 feet by returning the form and function of the channel to dynamic equilibrium and improve the ecological processes of the riparian corridor.
Stabilize the eroding stream banks
Water quality improvement
Sustainability
Infrastructure protection
Habitat improvement
Muskegon Lake, located in Muskegon, Mich., has been listed as a Great Lakes Area of Concern due to a significant loss of wildlife habitat and degraded water quality. This presentation will discuss how an organized grassroots effort has successfully received state and federal funding to implement large-scale ecological restoration projects throughout the lake.
February 11, 2014 public meeting presentation for three proposed stormwater facility management projects off of Cabin Branch of Great Seneca Creek. (powerpoint file)
Popes Head Creek at Brecon Ridge Resident MeetingFairfax County
The project seeks to stabilize excessive & ongoing stream erosion negatively impacting water quality, undermining trees, threatening the riparian corridor, and degrading habitat for aquatic life.
Project components include:
Install instream structures to direct flow, alleviate erosive forces on stream banks, and provide instream habitat
Raise the stream channel bottom to allow water to spread out over the floodplain
On a tributary to the main channel, stabilize a headcut & debris jam holding back sediment from channel erosion upstream
Control non-native invasive plants
Reforest the site with native trees, shrubs, and plants
The primary goals of this project were to address public safety concerns, stabilize an eroded channel by using natural stream design techniques and promote the growth of native vegetation. The natural channel design techniques used, such as a reinforced bed mix riffle sections and step pools, reduce the flow velocity, provide stability, and enhance water quality along the streams leading to the Chesapeake Bay. The disturbed areas of the site were restored with native shrubs, plants and trees.
Piney Run Public Meeting 1 October 17, 2018Fairfax County
This project will restore 4,300 feet of stream on Lake Werowance Inc. and privately owned properties. Goals are stabilized stream banks and bed, reduced sediment and nutrients, improved habitat, and enhanced water quality.
Snakeden Branch at Lake Audubon Public Meeting November 13, 2018Fairfax County
This project includes the restoration of about 800 linear feet of Snakeden Branch, from the VDOT culvert at South Lakes Drive to Lake Audubon. This project was requested by the community and Reston Association due to multiple exposed sanitary crossings.
Similar to Woodglen Lake Dredging and Restoration (20)
Merrifield Nursery Emergency Gravity Sewer ReplacementFairfax County
During a routine Closed-Circuit Television (CCTV) Camera inspection by Wastewater Collection Division (WCD), it was found that 45 linear feet of 8-inch asbestos reinforced concrete pipe (RCP) between MH-292 to MH-291 was within imminent danger of failing. The bottom of the RCP was missing within the 45 linear feet of repair and the pipe was on the verge of surcharging. After an immediate pre-construction meeting with Merrifield Nursery, it was agreed to work from 6pm-10am everyday of the week to avoid disruption and potentially placing patrons at risk during the biggest time of the year for Merrifield Garden Center. The contractor mobilized to the site and began the 20-foot excavation to replace 45 linear feet of broken gravity sewer. The project started on March 14th, 2022 and was substantially complete on March 23, 2022.
The Sully Basins Stormwater Pond Retrofits project was substantially completed on April 19, 2022. The project is located within the Cub Run watershed. The project consisted of repair and enhancement of multiple stormwater basins, 0326DP, 0964DP and 1484DP. The project also included construction of new stone cascades, stone weir basin structures and the construction of wetlands with high and low marsh areas. The project will facilitate improved sediment removal and improve downstream water quality using forebays and micro pools. Aquatic and natural habitat were also added within the three basins.
Clarks Crossing Road Improvements 05-13-22Fairfax County
The Clarks Crossing Road Pedestrian Access Improvement project improved the pedestrian and bicycle access along Clarks Crossing Road and was substantially completed on March 23, 2022.
This project completed the missing link between the existing sidewalk at Brookside Lane and the previously constructed sidewalk along Clarks Crossing Road. The scope of this project included construction of asphalt sidewalk, curb ramps, curb and gutter, drainage improvements along Brookside Lane and asphalt mill/overlay on Clarks Crossing and Brookside Lane.
Tysons West Wastewater Conveyance Systems Modifications Project 05-22.pptxFairfax County
Future wastewater flows in northern Fairfax County exceed existing system capacity
Treatment capacity is available in Noman M. Cole Jr. Pollution Control Plant in Lorton, VA
New pipes and pumps are needed to move future flows to treatment plant
NEXT STEPS
Field investigations / surveys
Finalize alignments and pump station layout
Use of open cut excavation
Use of trenchless methods
Easement acquisition needed
Develop traffic control plans
Description:
The project consists of a new, 23,000 square feet, two-story, four-bay fire station facility and associated improvements to the 3.3-acre site including storm water detention, landscaping and parking. The scope also included the demolition of the existing fire station, and a temporary fire station to house the Fire and Rescue Department during construction of the new facility. The key elements of the overall project include:
Scotts Run at Old Meadow Road Park Phase I and Phase II Stream RestorationFairfax County
Scotts Run @ Old Meadow Road Stream Restoration was substantially completed on March 30, 2022. The Scotts Run project consisted of restoring, enhancement, and stabilizing of approximately 2,930 linear feet of eroding stream using Natural Channel Design criteria. This project included two phases: Phase I was funded by proffers from a private development and Phase II was County funded. Also included was the removal of invasive non-native plants and the installation of new plantings to stabilize the stream and floodplain.
Riverwood Community Meeting - 04-14-2022- Presentation.pptxFairfax County
The new 4-inch ductile iron force main will serve the surrounding community for the foreseeable future. Replacement of the force main will:
Reduce the level and frequency of maintenance required to keep the force main operating.
Prevent costly emergency repairs.
Provide residents with safe, reliable utility infrastructure.
Enhance the quality of life for residents.
Reduce risks to public health and the environment.
Burke Centre VRE Connector Phase IV project was substantially completed on March 7, 2022. This project enhanced the access to mass transit by creating a more direct connection from the VRE Station to the residential areas west of Premier Court. This project also connects the Oak Bluff community to the Virginia Rail Express (VRE) Burke Station and provides a multi-use shared pedestrian and bicycle trail for outdoor recreation.
Objectives: Share our project understanding with the council and seek input on the unique opportunities and housing goals for this site that could help guide
our master planning process.
Rabbit Branch at Collingham Drive Stream Restoration - March 28, 2022.pptxFairfax County
4,800 linear feet of stream will be restored using Natural Channel Design methodologies
Pollutant reduction
1,439 lbs/total phosphorus
3,400 lbs/total nitrogen
462.1 tons of total suspended sediment
Protection of private property and public infrastructure
Increased ecological diversity with native vegetation
DEQ has awarded a SLAF grant to this project for these environmental benefits
LAKE BARTON DREDGING, RESTORATION AND RISER MODIFICATION PROJECT Fairfax County
The Lake Barton Dredging, Restoration, and Riser Modification project was substantially completed on December 29, 2021. The project is located within the Pohick Creek watershed. The project consisted of dredging and removal of approximately 19,100 cubic yards of sediment to restore the sediment trapping capacity and improve water quality. The project also included construction of new sediment forebays, in-lake haul roads, and riser modifications (new mid-level sluice gate and cold-water intake) to facilitate future maintenance, stabilize the shoreline, and improve downstream water quality. Fish habitat was also added within the lake.
Reston Arts Community Center Feasibility - Wrap UpFairfax County
This is the last of 5 engagement meetings. We are excited to report back what we heard from you – your preferences, priorities, questions, hopes, concerns. The information we received will be used to inform the space allocations and cost estimating for discussion of the proffer by Fairfax County.
Stormwater Wastewater Facility Virtual Community Meeting, March 29, 2022Fairfax County
Benefits of Consolidated Facility
Building and Site Efficiencies
Operational Efficiencies
Addresses Space Deficiencies
Addresses Renovations and Capital Renewal Requirements
for WCD
Provides for a Centrally Located Site that Accommodates Program
Consolidates Integrated Services on One Centrally Located Site
Reston Arts Center Feasibility Study Focus Group - March 28, 2022Fairfax County
This is the 4th of 5 engagement meetings. We are excited to hear from you – your preferences, priorities, questions, hopes, concerns. The information we receive today will be used to inform the space allocations and cost estimating for discussion of the proffer by Fairfax County.
Oak Marr Pump Station Rehabilitation – Construction ProjectFairfax County
Neighborhood was built in the 1980s, and the sewer infrastructure has been in operation since.
Aged pump station equipment – pumps, valves, fans, concrete, etc.
This aging equipment has the potential of causing:
Sanitary Sewer Overflows (SSO)
Sewer back-ups into homes
Environmental damages
Maintenance problems
Tucker Avenue Neighborhood Community Meeting, 03-15-2022Fairfax County
Identify and evaluate house flooding and public safety concerns
Improve drainage conditions to convey 100-year storm if feasible
Reduce and treat stormwater runoff at the source
Improve water quality and stream protection
Use resilient & functional designs
Make improvements compatible with characteristics of neighborhood
Partner with community to develop sound, cost effective solutions that can be collaboratively implemented and maintained
Build on lessons learned to help improve site development process for infill development
Reston Arts Center Feasibility - Focus Group Visual ArtsFairfax County
These community outreach meetings are being conducted to understand community needs for a proposed arts venue in the Reston Town Center.
The proposed arts center would be a result of a proffer from Boston Properties in the next phase of Reston Town Center development (Block J).
The proffer would provide for an approximately 60,000 gross square foot facility to house a stage suitable for large-scale music and dance performances, as well as other arts-related amenities.
Reston Arts Center Feasibility Focus Groups Visual, March 14, 2022Fairfax County
These community outreach meetings are being conducted to understand community needs for a proposed arts venue in the Reston Town Center.
The proposed arts center would be a result of a proffer from Boston Properties in the next phase of Reston Town Center development (Block J).
The proffer would provide for an approximately 60,000 gross square foot facility to house a stage suitable for large-scale music and dance performances, as well as other arts-related amenities.
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हम आग्रह करते हैं कि जो भी सत्ता में आए, वह संविधान का पालन करे, उसकी रक्षा करे और उसे बनाए रखे।" प्रस्ताव में कुल तीन प्रमुख हस्तक्षेप और उनके तंत्र भी प्रस्तुत किए गए। पहला हस्तक्षेप स्वतंत्र मीडिया को प्रोत्साहित करके, वास्तविकता पर आधारित काउंटर नैरेटिव का निर्माण करके और सत्तारूढ़ सरकार द्वारा नियोजित मनोवैज्ञानिक हेरफेर की रणनीति का मुकाबला करके लोगों द्वारा निर्धारित कथा को बनाए रखना और उस पर कार्यकरना था।
role of women and girls in various terror groupssadiakorobi2
Women have three distinct types of involvement: direct involvement in terrorist acts; enabling of others to commit such acts; and facilitating the disengagement of others from violent or extremist groups.
‘वोटर्स विल मस्ट प्रीवेल’ (मतदाताओं को जीतना होगा) अभियान द्वारा जारी हेल्पलाइन नंबर, 4 जून को सुबह 7 बजे से दोपहर 12 बजे तक मतगणना प्रक्रिया में कहीं भी किसी भी तरह के उल्लंघन की रिपोर्ट करने के लिए खुला रहेगा।
In a May 9, 2024 paper, Juri Opitz from the University of Zurich, along with Shira Wein and Nathan Schneider form Georgetown University, discussed the importance of linguistic expertise in natural language processing (NLP) in an era dominated by large language models (LLMs).
The authors explained that while machine translation (MT) previously relied heavily on linguists, the landscape has shifted. “Linguistics is no longer front and center in the way we build NLP systems,” they said. With the emergence of LLMs, which can generate fluent text without the need for specialized modules to handle grammar or semantic coherence, the need for linguistic expertise in NLP is being questioned.
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1. Woodglen Lake Dredging and Restoration
Department of Public Works and Environmental Services
Project Update, September, 2013
2. Woodglen Lake: Meeting Agenda
Project Goals and Status
Woodglen Lake Conditions
Project Overview
Site Access and Decanting Basin Restoration
Dredging Approaches
Streambank Stabilization
Lake Habitat Restoration
Project Timeline
February Meeting highlights
Questions and Answers
3. Project Goals
Restore sediment pool and create in-lake forebay
Aesthetics
Long-term downstream water quality benefits
Improve lake water quality and habitat
Stabilize two stream locations to protect access
road
Remove existing decanting basin and provide long
term maintenance improvements
4. Woodglen Lake: Project Status
Data collection completed
Lake dredging and management plan completed
Design plans and specifications
Preliminary design – completed
Final design – current design phase
Permitting
Late 2013: complete final design
Begin construction in spring 2014
5. Woodglen Lake Facts
Drainage area =
740 Acres (1.15 square miles)
Lake surface area =
12.5 acres
Sediment pool capacity =
160,000 cubic yards (CY)
Current sediment in lake =
29,300 CY
Estimated annual sediment load =
1,200 CY / year
16.6 feet
29,300 CY
8. Woodglen Lake: Project Overview
Staging Area
Improved access
road
Sediment forebay
Lake dredging,
shoreline restoration,
lake habitat improvement
Removal and
restoration of decanting
basin
Potential
reforestation areas
9. Dredging Approaches
1. Wet Dredging: Mechanically dredge deposited
sediment and haul wet. Normal pool maintained.
(Note: This option will still require lake drawdown for
a short period of time to build the forebay berms)
2. Dry Dredging: Drain the lake and dry deposited
sediment in place prior to hauling
3. Project will be bid out with the option to dredge wet
or dry
Partial drawdown option for dry dredging: drawing the
lake down by 9 feet would leave a 3.5 acre pool; sediment
would be dried in the dewatered section of the lake in
place prior to hauling. Approximately 1/2 of the deposited
sediment volume would be removed.
12. Wet Dredging
General Sequence
Establish access and staging areas
Conduct dredging utilizing barges
Haul wet sediment to disposal site
for drying
Pros
Less weather dependent
Quicker initial start to dredging
Less potential for schedule
extensions or delay
Cons
Increased sediment handling effort
at disposal area
Potentially higher cost
13. Dry Dredging (Full or Partial Drawdown)
General Sequence
Initiate drawdown of lake
Establish access and staging areas
Establish diversion channels within lake
Conduct dredging
Pros
Higher daily sediment removal rates
Minimal sediment handling effort at
disposal area
Potentially lower cost
Cons
Very weather dependent
Higher potential for delays due to weather
Even with a reduced pool, there will be a
need to relocate/salvage fish
14. Huntsman Lake Dam Rehabilitation Project Fish Relocation (May, 2013)
15. Woodglen Lake: Partial Drawdown
Staging Area
A partial drawdown would leave a 3.5
acre pool with a maximum depth of 5
feet with an average depth of 1 to 2 feet.
Approximate volume of sediment to be
removed 15,000 CY
16. Lake Restoration
In-lake forebay
Wetland planting
Shoreline stabilization
Fish habitat
Fish stocking
Lake Barton:
Fish stocking by Virginia Game and Inland Fisheries
Fish habitat created from
salvaged trees
20. Fish Habitat Structures
Photos Courtesy of the Pennsylvania Fish and Boat Commission
Nesting Structure
Porcupine Crib Jr.
Rock Rubble Piles
Post Clusters
23. Access During Construction
Pedestrian
access to
lake from
Zion Drive
will be
maintained
(after hours)
Lake Barton
example
24. Woodglen Lake: Project Status and Timeline
Data collection completed
Lake dredging and management plan completed
Design plans and specifications
Preliminary design – completed
Final design – current design phase
Permitting
Late 2013: complete final design
Begin construction in spring 2014
25. Woodglen Lake Dredging and Restoration
Project Timeline
Early 2014: construction bid advertisement
Spring 2014: begin dredging
Dredging method will depend on bid results
Project duration: 6 to 7 months
26. February Meeting Discussion Highlights
Dry/Wet dredging: in order to ensure a competitive
bidding environment, both options have to be allowed,
with partial drawdown an option for dry dredging
Cheapest dredging method: depends on disposal site
identified, either method could be cheaper
Project cost-effectiveness: forebay and maintenance
enhancements make this project cost-effective from the
viewpoint of downstream water quality improvements
and long-term costs