point cover jan 13 - Boston Redevelopment Authority

\\MABOS\projects\11381.00\reports\Article80\
Expanded_PNF\04_Environmental_FINAL.do
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Vanasse Hangen Brustlin, Inc.
The Point, Boston
federal and state databases and municipal files regarding the use, storage or release of OHM on or near the
subject property. As part of the Phase II investigation, chemical testing of groundwater was performed. In
summary, the Phase I/II assessments did not indicate the presence of Recognized Environmental Conditions
(RECs) with respect to the subject property.
It is currently anticipated that construction of the proposed building will require excavation and off-site
disposal of an unknown quantity of existing soil. Disposal of excavated soil will be conducted in accordance
with the current policies of the Massachusetts DEP. Chemical testing will be performed as needed to reuse/
dispose of the soils off-site depending on the acceptance criteria of specific facilities.
In addition, procurement of a temporary groundwater dewatering discharge permit from the Environmental
Protection Agency (EPA), DEP, and Boston Water and Sewer Commission will be required for pumping and
discharge of site groundwater from within the steel sheetpile cofferdam to be installed prior to excavation.
Noise
The purpose of the noise evaluation is to assess potential Project-related noise associated with potential
rooftop mechanical equipment and loading activities. The noise analysis included noise monitoring to
determine existing sound levels and calculations of future sound levels associated with potential mechanical
equipment. The following section discusses noise background, the City of Boston’s noise standards, noise
analysis methodology, and a comparison to the City’s noise criteria.
Summary of Key Findings
The noise analysis determined that the maximum sound levels that the Project may generate comply with the
City of Boston’s noise standards at the sensitive receptor locations. The Project will not generate noise levels
that exceed the City’s noise criteria during the daytime and nighttime period, respectively. The rooftop
mechanical equipment has been strategically located on the roof in a mechanical room of the proposed
building (Levels 23 and 24). Additionally, during the selection process of the rooftop mechanical equipment,
the Proponent will select equipment (including any necessary mitigation measures) that would result in
sound levels that do not exceed the maximum sound levels determined in this evaluation. Since majority of
the service and loading activities will be serviced on-site and within the proposed building, noise impacts to
the sensitive receptor locations will be negligible.
Noise Background
Noise is defined as unwanted or excessive sound. Sound becomes unwanted when it interferes with normal
activities such as sleep, work, or recreation. How people perceive sound depends on several measurable
physical characteristics. These factors include:
Intensity - Sound intensity is often equated to loudness.
4-28 Environmental Protection