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

June 30, 2020 Muddy River Flood Damage Reduction Phase 2 Summer 2020 Construction Preview

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

Area 1 – Site Layout & Detours • 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. June 2020

Area 2 – Site Layout & Detours • 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 June 2020

Area 3 – Site Layout & Detours • 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. June 2020

Area 4 – Site Layout & Detours • 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 June 2020

Area 5 – Site Layout & Detours • 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. June 2020

Area 6 – Site Layout & Detours • 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. June 2020

Area 7 – Site Layout & Detours • 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 June 2020

Area 8 – Site Layout & Detours • 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. June 2020

Area 9 – Site Layout & Detours • 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. June 2020

Area 10 – Site Layout & Detours • 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 June 2020

Area 11 – Site Layout & Detours • 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 open 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. June 2020

Area 12 – Site Layout & Detours • 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. June 2020

Total Wetland Impact Summary June 2020

Schedule Overview – 2020 into 2021 ➢ General Sequencing July 2020 ➢ • Areas 1 -6 will be completed stages with multiple crews • Site Mobilization and Staging Area Setup • Example: While Charter is excavating in Area 2, • Tree Clearing Areas 1 – 12 - Approved Trees Charter will be preparing/setting up Area 3 and larger than 4”, grubbing will occur after fence is in place in each area, prior to or Landscaping in Area 1 creating a “train”. Upon during excavation. completion of Excavation in Area 2 the “train” will • Fence Area 1 move up to the next work area. • Temporary Fence will be taken down in each area • Fence Areas 7 – 11 – South of Victory Gardens as restoration is complete. On going maintenance will occur for 2 years after completion of each October 2020 ➢ area. • Fence Areas 2 & 11 • Completion in Areas 1 through 6 is expected by the • Excavation of Areas 1 and 7 end of 2021 – less landscaping due to timing and January 2021 planting windows. ➢ • Areas 7-13 are continuous and mostly will be occupied • Fence Areas 3 & 4 from 2020 until 2023. Same as Areas 1-6, temporary March 2021 ➢ fence will be removed from Areas 7-13 to the greatest • Fence Areas 5, 6, 12 & 13 extent possible as areas are complete to minimize impacts to the public. • Operations in Areas 1-6 will happen concurrently with *Dates are subject to change Areas 7-13 June 2020

Summer 2020 Construction Preview Questions?