The Challenge

  • NYC’s first major expansion in 50+ years
  • Concerns raised regarding the public’s exposure to volatile organic compounds (VOC) and total particulates

The Second Avenue Subway was New York City’s first major subway system expansion in over 50 years. The line stretches 8.5 miles along the length of Manhattan’s East Side, from 125th Street in Harlem to Hanover Square in Lower Manhattan.

The Solution

Geocomp provided real-time monitoring services to E.E. Cruz as part of the reconstruction activities at the Second Avenue Subway 96th Street Station. In order to address concerns raised regarding the public’s exposure to volatile organic compounds (VOC) and total particulates, Geocomp worked to modify our automated data collection and management system, iSiteCentral®. The modifications compared results from multiple monitoring stations and relayed contaminant concerns to the project’s central reference station.

This added feature quickly identified if the exceedance was caused by construction activities or the result of a larger change in the atmosphere that was not caused by the projects activities.

Services Provided

Real-Time Monitoring

Real-time monitoring services of sensor thresholds for exceedance caused by construction activities

Automated Data Collection

Automated data collection and management addressing containment concerns in one monitored location

Related Projects

GEOPROJECT_World Trade Center

World Trade Center

Value Delivered:

Real-time monitoring enabled continuous tunnel and
wall deformation detection during construction
GEOPROJECT_Second Ave Subway

Second Avenue Subway

Value Delivered:

Instrumentation and monitoring during demolition
provided project alerts safeguarding buildings and utilities
surrounding the site
GEOPROJECT_Regional Connector

Regional Connector

Value Delivered:

Reduce risk to general public and building owners during
construction activity
Sensor data allowed construction activity to progress
continuously without delays

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