The New York City Department of Environmental Protection (NYCDEP) is constructing a Bypass Tunnel requiring the construction of two shafts (5B & 6B) in the towns of Newburgh and Wappinger, New York. The shafts are being excavated in overburden earth and rock, and lined with concrete. For each shaft, a temporary shaft cover will be constructed below the surface at the completion of the shaft construction. NYCDEP has retained Schiavone Constructors Company, LLC (SCC) to conduct the shaft construction operations. Distinct Engineering Solutions, Inc. (DESI) is providing environmental and engineering support to SCC. DESI has prepared Soil Sampling Plans, a Demolition Debris Sampling Plan, a Lead Health & Safety Plan, and Air Monitoring Plan for construction and demolition activities. DESI has conducted air monitoring to assess worker and community exposure to lead, arsenic, cadmium, and chromium during demolition operations and recommended safe work practices. DESI performed soil characterization for off-site disposal of soils excavated from the site and will be conducting soil sampling for determination of potential presence of targeted contaminants. DESI developed Noise Control Monitoring and Mitigation Plans, performed baseline noise monitoring, and developed site-specific limits. DESI is assisting SCC in conducting daily noise monitoring, evaluation of results, and conducting vibration monitoring services. DESI is also designing a sanitary sewer system for on-site construction trailers and conducting Pre-Construction Building Condition and Structural Evaluation Surveys, which include photo and video documentation, installation of crack gauges, and providing recommendations for limiting vibrations and lateral movement. DESI is also conducting periodic residential well water sampling and monitoring. DESI provided oversight for closure of a #2 Heating Oil tank, collected confirmatory samples and submitted a Closure Report. DESI is also developing a SPCC Plan for on-site chemical storage.
New York City Department of Environmental Protection (NYCDEP)
59-17 Junction Boulevard
Elmhurst, New York 11373