sydney-city-centre-review-of-environmental-factors

As shown above, the proposal would impact on adjacent sensitive receivers during
construction. The noise levels would vary depending on the nature of the works and
the proximity of the nearest receivers and the length of time equipment would be
used. The construction work would also have the potential to result in sleep
disturbance for local residents if noisy equipment is be used at night (refer to section
below where this is discussed further).
The noise assessment confirms that there would be exceedances of the ‘noise
affected’ NMLs set for residential receivers at some point during construction at all
work sites. The least impacted work sites would be R1: Park Street and
F1: Macquarie Road where exceedances are only predicted to occur during out of
hours working. The table also shows that the NMLs set for other sensitive land uses
and commercial buildings would be largely exceeded in all locations for all stages of
work.
The highest exceedances (ie the noisiest works) are predicted to occur when
constructing the traffic capacity improvements in precinct 2: retail due to the proximity
of the adjacent receivers and the extensive number of noise generating activities that
would take place in this precinct, which would require the use of noise intensive
equipment such as vibratory rollers, concrete saws and angle grinders (refer to
Table 23 in the Appendix D).
The impact would also be affected by the scale of the works in each location as
follows:
At six work sites (NW1: Kent Street, R3: Sussex Street, S1: Sussex Street,
S4: Ultimo Road and F2: Macquarie Street) the work would be short-term
(ie less than three weeks). Whilst there would be short periods where the NMLs
would be exceeded in these locations, reasonable and feasible noise
safeguards and management measures should be implemented when working
outside of the recommended standard hours for construction
At the remaining 11 work sites (NW2: King Street, R1: Park Street, R2: Market
Street, R4: Clarence Street, R5: York Street, S2: Goulburn Street, S3: Pitt
Street, S5: Broadway, S6: Pitt Street, C1: Wentworth Avenue, C2: College
Street and F1: Macquarie Street) some of the traffic capacity improvements
would take longer to construct, thereby exceeding the three-week limit set in
the ICNG that requires reasonable and feasible noise safeguards and
management measures to be implemented to manage potential noise impacts
both when undertaking work during the day and out of hours. As noted above,
even though the total construction period would be more than three weeks at
these work sites, the noisiest plant and equipment (which would contribute the
most to the predicted exceedances) would typically only be in use for short
periods of time across the construction program limiting the time any
exceedance would occur.
More specifically, the overall results showed that:
The greatest impacts would occur at night
There would be a non-compliance with the NMLs within 90 metres and
190 metres from the noisiest plant at night
There would be a non-compliance with the NMLs within 25 metres and
50 metres from the noisiest plant during the day
The highest predicted maximum noise levels would occur where kerb
alterations would need to take place; however this would only impact a short
section of any work site where these works would occur (refer to Table 3-3 to
Table 3-7)
Sydney City Centre Capacity Improvement 223
Review of Environmental Factors