SECOND AVENUE SUBWAY PROJECT

MUCK CONVEYANCE SYSTEM69th & 72nd Street Shafts69th & 72nd Street Shafts

APRIL 4, 2011

Current Work Operations at 69th St. Shaft

Step 1: Diesel Crane removes rock with skip pan

Step 2: Skip pan emptied into muck bin on pavement

Step 3: Truck backed in by flagmen for loading

Step 4: loader fills truck from muck bin for transport

Q

7272ndnd Street StationStreet StationMuck Conveyance SystemMuck Conveyance System

2ND Avenue Subway‐72nd St. CavernQ

QProposed 11’ – 9” Sidewalk

QMuck Conveyance System

Full Height Fixed Wall System

QMuck Conveyance System – looking East

QMuck Conveyance System – looking North

QMuck Conveyance System – Widened Sidewalk 

QMuck Conveyance System ‐ Animation

QImproved MitigationImproved Mitigation

• Noise• Eliminates diesel crane & loaderEliminates diesel crane & loader• Electric gantry crane• Sound rated wall panelsD i th h t k tt• Drive through truck pattern

• Dust • Enclosed muck storage g• Containerized storage, handling and removal• Cleaner work area, reduced dust

• Emissions• Eliminates diesel emissions (crane & loader)I d k t l f bl ti• Improved smoke control from blasting

Q

7272ndnd Street StationStreet StationMuck Conveyance System OptionMuck Conveyance System Option

QMuck Conveyance System ‐ Option

Roll Up Door & Roof System

QMuck Conveyance System – looking East

QMuck Conveyance System – looking North

QMuck Conveyance System – Widened Sidewalk

QMuck Conveyance System – Staggered Muck Bins

QMuck Conveyance System – Staggered Muck Bins

QMuck Conveyance System – Staggered Muck Bins

QMuck Conveyance System – Staggered Muck Bins

Q4th Floor View From Windows

Q3rd Floor View From Windows

Q2nd Floor View From Windows

QMuck Conveyance System – Day and Night 

QMuck Conveyance System – Day and Night 

QMuck Conveyance System – Day and Night 

QMuck Conveyance System – Day and Night 

QMuck Conveyance System

QUESTION AND ANSWERS