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Scope:
The new Sound Transit
Maintenance Facility Site Preparation project includes
the demolition and removal of 17 buildings
spread over 10 distinct areas, including the former
Rainier Brewery facility, commercial buildings,
and industrial warehouse. The construction activities
include the use of excavators, bulldozers, off-highway
trucks, hydraulic breakers, spray trucks, dump trucks,
and a concrete crushing plant.
The first phase of
the noise abatement plan required the preparation
of an environmental noise assessment to determine
the sensitive receivers, measure the existing noise
levels, predict the construction noise, and determine
the noise mitigation requirements to comply with
the Seattle Municipal Code. Our initial predicted
noise levels were accurate and mitigation measures
have been necessary.
The required weekly monitoring
and the locations to be monitored were identified
from the initial plans. These assessments were ongoing
to ensure that the noise abatement plan would be
effective.
Completing the Project:
An important aspect
of the plan was coordination between the construction
team and our team. Due to the complexity of the
site and project, the construction schedule and
order of demolition is continuously changing, and
requires a high level of flexibility and attention
to detail.
On-site noise monitoring was done on
a weekly basis with a flexible schedule as the demolition
schedule changes week to week. We coordinate our
schedule the week before to match the project’s
schedule. In this manner we are able to “ebb
and flow” with the project.
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