Muddy River Flood Damage Reduction Phase 2 Summer 2020 Construction - - PowerPoint PPT Presentation

Muddy River Flood Damage Reduction Phase 2

Summer 2020 Construction Preview

June 30, 2020

June 2020

Presentation Agenda

➢ Project Overview ➢ Key Project Personnel – Charter Contracting Company LLC ➢ Project Site Area Layout – Public Detours

• Pedestrian and Traffic Detours

➢ Schedule Overview for 2020

• Fencing
• Tree Removal
• Access
• Excavation

June 2020

Project Overview

➢ 13 Work Areas – From Leverett Pond to Boylston Street Bridge

• Areas 1 – 12 includes 90,000CY of sediment removal
• Areas 1, 2, 4, & 6-12 Excavate “In-the-Wet” – Allow free flow conditions at all times
• Areas 3 & 5 – Excavate “In-the-Dry” – Divert river using natural topography, and allow free flow

conditions at all times

• Charter’s approach disturbs 1,409SF less wetlands than originally contemplated during the project

design phase

• Area 13 includes flood protection wall at Boston Fire Department Fire Control Center
• Eradicate phragmites in Backbay Fens and Riverway areas
• Plant emergent wetland/upland plants, shrubs and trees
• Installing wildlife habitats
• Protection of existing vegetation and trees is high priority

June 2020

Key Project Personnel

➢ Key Project Personnel – Charter Contracting Company LLC

• Project Manager – Kyle Merkosky
• Clarkson University
• 14 Years Experience in the Heavy Civil and Environmental Construction Field
• Site Superintendent – Matthew Sweeney
• Northeastern University
• 29 Years Experience in the Heavy Civil and Environmental Construction Field
• Assistant Project Manager & Environmental Monitor – Shane Gray
• Northeastern University
• 8 Years of Experience in the Environmental Construction Field
• Site Safety and Health Officer – Timothy Bullock
• 30+ Years of Experience in the Construction Industry, 19 of those years as an SSHO
• Quality Control System Manager – Kevin Hallion
• Wentworth Institute of Technology
• 14 Years of Experience in the Construction Industry

June 2020

• A Temporary Path will

be created to provide access to pedestrian traffic

• A flagger will be

present at the vehicle gate when construction traffic is active for safety.

• Signage on pedestrian

walkways will be present to direct foot traffic.

• The southern side of

the parking area will remain accessible for vehicles.

Area 1 – Site Layout & Detours

June 2020

• A flagger will be present

at the vehicle gate when construction traffic is active for safety.

• Signage on pedestrian

walkways will be present to direct foot traffic.

• Pedestrian access will

be maintained along the currently active pathway

Area 2 – Site Layout & Detours

June 2020

• A flagger will be present

at the vehicle gate(s) when construction traffic is active for safety.

• Signage on pedestrian

walkways will be present to direct foot traffic.

• Foot traffic will be

diverted from the Boston side of the River to the Brookline side of the river for safety and to allow construction vehicle access.

Area 3 – Site Layout & Detours

June 2020

• A flagger will be present

at the vehicle gate when construction traffic is active for safety.

• Signage on pedestrian

walkways will be present to direct foot traffic.

• A Temporary Path will

be created to provide access to pedestrian traffic

Area 4 – Site Layout & Detours

June 2020

• Signage on pedestrian

walkways will be present to direct foot traffic.

• Foot traffic will be

diverted from the Boston side of the River to the Brookline side of the river for safety and to allow construction vehicle access.

Area 5 – Site Layout & Detours

June 2020

• A flagger will be present

at the vehicle gate(s) when construction traffic is active for safety.

• A Temporary Path will

be created to provide access to pedestrian traffic

• Signage on pedestrian

walkways will be present to direct foot traffic.

• Foot traffic will be

diverted from the Boston side of the River to the Brookline side of the river for safety and to allow construction vehicle access.

Area 6 – Site Layout & Detours

June 2020

• Signage on pedestrian

walkways will be present to direct foot traffic.

• The current pathway

closest to the river will be utilized as a construction vehicle access road and will not be open to foot traffic

Area 7 – Site Layout & Detours

June 2020

• Signage on pedestrian

walkways will be present to direct foot traffic.

• The current pathway

closest to the river will be utilized as a construction vehicle access road and will not be open to foot traffic

• A flagger will be present

at the vehicle gate(s) when construction traffic is active for safety near Louis Prang St

• intersection. Anticipated

use is minimal.

Area 8 – Site Layout & Detours

June 2020

• Signage on pedestrian

walkways will be present to direct foot traffic.

• The current pathway

closest to the river will be utilized as a construction vehicle access road and will not be open to foot traffic

• A flagger will be present

at the Clement Field bridge when construction traffic is active in Areas 7 & 8. At this time all foot traffic will be diverted from the War Memorial bridge to allow safe passage at 1 location.

Area 9 – Site Layout & Detours

June 2020

• Signage on pedestrian

walkways will be present to direct foot traffic.

• The current pathway

closest to the river will be utilized as a construction vehicle access road and will not be open to foot traffic

• A flagger will be present

at the War Memorial bridge when construction traffic is active in Area 9.

• At this time the Clement

Field Bridge will be open without limitations

Area 10 – Site Layout & Detours

June 2020

• Signage on pedestrian

walkways will be present to direct foot traffic.

• The Northern sidewalk on

Agassiz Rd will be closed for the duration of the project, the Southern sidewalk will remain

• pen for pedestrians.
• A flagger will be present

at Agassiz Rd Vehicle Gates when Construction truck traffic is active

• Agassiz Rd will be closed

to public vehicle traffic during the day once excavation begins and as needed during project site setup.

Area 11– Site Layout & Detours

June 2020

• Signage on pedestrian

walkways will be present to direct foot traffic.

• Pedestrian and

Emergency Vehicle access will be maintained adjacent to the Victory Gardens.

• A flagger will be present

at the vehicle gate(s) when construction traffic is active for safety.

Area 12 – Site Layout & Detours

June 2020

Total Wetland Impact Summary

June 2020

Schedule Overview – 2020 into 2021

➢

July 2020

• Site Mobilization and Staging Area Setup
• Tree Clearing Areas 1 – 12 - Approved Trees

larger than 4”, grubbing will occur after fence is in place in each area, prior to or during excavation.

• Fence Area 1
• Fence Areas 7 – 11 – South of Victory

Gardens

➢

October 2020

• Fence Areas 2 & 11
• Excavation of Areas 1 and 7

➢

January 2021

• Fence Areas 3 & 4

➢

March 2021

• Fence Areas 5, 6, 12 & 13

*Dates are subject to change

➢ General Sequencing

• Areas 1 -6 will be completed stages with multiple crews
• Example: While Charter is excavating in Area 2,

Charter will be preparing/setting up Area 3 and Landscaping in Area 1 creating a “train”. Upon completion of Excavation in Area 2 the “train” will move up to the next work area.

• Temporary Fence will be taken down in each area

as restoration is complete. On going maintenance will occur for 2 years after completion of each area.

• Completion in Areas 1 through 6 is expected by the

end of 2021 – less landscaping due to timing and planting windows.

• Areas 7-13 are continuous and mostly will be occupied

from 2020 until 2023. Same as Areas 1-6, temporary fence will be removed from Areas 7-13 to the greatest extent possible as areas are complete to minimize impacts to the public.

• Operations in Areas 1-6 will happen concurrently with

Areas 7-13

Summer 2020 Construction Preview

Questions?