+ All Categories
Home > News & Politics > Dead Run Stream Restoration Segment 2 – 3

Dead Run Stream Restoration Segment 2 – 3

Date post: 21-Jan-2018
Category:
Upload: fairfax-county
View: 64 times
Download: 1 times
Share this document with a friend
27
A Fairfax County, VA, publication Department of Public Works and Environmental Services Working for You! Dead Run Segment 2/3 Stream Restoration McLean Central Park and Dead Run Stream Valley Park December 7, 2017
Transcript

A Fairfax County, VA, publication

Department of Public Works and Environmental ServicesWorking for You!

Dead Run Segment 2/3 Stream RestorationMcLean Central Park and Dead Run Stream Valley Park

December 7, 2017

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Community Meeting: Pardon our Dust

• Project Background

– Background

– Major Project Elements

• Construction Timeline Summary

• Project Schedule/Phasing, Site Access, Construction Equipment

• Example photos from Dead Run Segment 1 project – (designed by Stantec and constructed by Meadville Land Services, Inc.)

• Safety During Construction

• Q&A

2

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

Project Location

3

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Project Background

• Fall 2013: Project initiated

• Winter 2013: Surveys and assessment completed

• April 2014: Pre-concepts submitted

• April 23, 2014: First public meeting

• April 2014 – March 2016: Stakeholder/community coordination and design refinement

• April 2016: Revised final concept design completed

• November 2, 2016: Final community task force meeting

• September 2017: Final design completed

• October 2017: Advertised for bid to six pre-qualified contractors

• November 21, 2017: Bid opening

4

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Items of Work

Restoration of approximately 2,800 linear feet of the section of Dead Run that flows through McLean Central Park, Dead Run Stream Valley Park, and adjacent private properties and its tributaries using Natural Channel Design techniques

Restoration of tributary near the tennis courts to stabilize large, unsafe headcut

Replace one pedestrian trail bridge over the tributary which parallels Churchill Drive

Control invasive plants and replant the riparian corridor in excess of Chesapeake Bay Preservation Ordinance requirements

5

Dead Run Segment 2/3 Stream Restoration

6

Scope of Work

Stormwater Planning Division

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

Restoration Renderings

7

Online Story Maps with Photographs - Virtual Stream Walk: • Existing conditions map link: (please cut and paste or type these links into your

browser) http://fairfaxcountygis.maps.arcgis.com/apps/MapTour/index.html?appid=c1cada0ba98c4434bfcfab759301602f#

• Proposed renderings map link: http://fairfaxcountygis.maps.arcgis.com/apps/MapTour/index.html?appid=077a029f66b849afae46189ee6da1916#

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

Restoration Renderings

8

Existing Conditions: Recent tree fall above pedestrian bridge in Segment 2

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

Restoration Renderings

9

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

Restoration Renderings

10

Dead Run Segment 2/3 Stream Restoration

11

Tributary Restoration

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

12

Pedestrian Bridge Replacement

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

13

Invasive Plant Management

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

14

Replanting the Riparian Corridor

Stormwater Planning Division

Stormwater Planning Division

Dead Run Segment 2/3 Stream Restoration

Planting Outside Project Limits

15

Total 2/3 of an acre outside of LOD being planted

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Summary of Construction Timeline

• Notice to proceed expected to be issued to Meadville Land Services, Inc. in February 2018

• Project duration: 410 calendar days (<14 months)

• Special project phasing (next slide)

• 2 year 85% care and replacement warranty on all trees and shrubs effective from date of plant installation

16

https://www.meadvillelandservice.com/

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Phasing Requirements

• Project is broken into 3 sections with the intent of limiting overall disturbance at any given time

• Contractor may only begin work in a section (including vegetation clearing and access road setup) upon approval from the County

• Approval to begin a new section will be based on a dedicated construction crew being assigned to complete that section

• Trail management plan required to be submitted by the contractor and approved by the County prior to any work

17

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Proposed Schedule

• Example construction schedule above

• Contractor will submit final schedule for approval– Restoration section schedules can overlap with multiple crews

• Permit required stream restoration monitoring by County: 3 Years

• Vegetation Monitoring and Maintenance by County: 3 Years

18

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Notice to Proceed

Project Start Up and Site Preparation

Restoration Section 1

Restoration Section 2

Restoration Section 3

Site Restoration and Planting

Project Completion

Construction Warranty 12 Months

Vegetation Warranty 24 Months

MonthActivity Comments

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Construction – Meadville Land Service, Inc.

• Project Schedule:1. Install erosion and

sedimentation controls and tree protection measures

2. Clearing and grubbing3. Construct stream

restoration in segments from upstream to downstream

4. Stabilize each segment as it is completed

5. Final planting of trees and shrubs to occur during the planting window following construction completion

• Site Access• Construction Equipment

19

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Dead Run at Dominican Retreat (Segment 1) Timeline

• 1,940 linear feet of restoration with a contract duration of 365 days

• October 10, 2016: Notice to proceed issued

• October 10, 2016 – November, 2016: material submittals, contractor mobilization, erosion and sediment controls installation, access road installation, tree removal

• December 2016 – June 27, 2017: In stream work, site stabilization

• June 27, 2017: Substantial completion awarded to contractor (75 days ahead of schedule)

• July 2017: Demobilization and final site cleanup

• October, 2017: Tree and shrub installation during the fall planting window

20

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Dead Run Segment 1 Photos

21

Access road and tree protection area

Stockpile area

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Dead Run Segment 1 Photos

22

Track truckExcavator

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Dead Run Segment 1 Photos

Before

23

After Grading (before tree and shrub planting)

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Dead Run Segment 1 Photos

24

Before After

Dead Run Segment 2/3 Stream Restoration

Stormwater Planning Division

Dead Run Segment 1 Photos

Planting

25

Dead Run Segment 1 Stream Restoration

26

Safety During Construction

• Contractor is required to comply with Fairfax County’s Construction Safety Resolution.

• For all residents, keeping safe means following two simple rules:

1. Please stay outside the construction limits at all times!

2. Observe construction activities from a safe distance.

Stormwater Planning Division

Dead Run Segment 1 Stream Restoration

27

Contact information

Construction related issues:Utilities Design and Construction Division703-324-5111, TTY 711 or by email:Janet Grubb-Webber: [email protected]

Questions on design:

Stormwater Planning Division 703-324-5500, TTY 711 or by email: Joe Riley-Ryan: [email protected]

Project Web Site: https://www.fairfaxcounty.gov/dpwes/stormwater/#projects

Stormwater Planning Division

Thank you.


Recommended