2021-08-30 Special Meeting Agenda

SPECIAL MEETING AGENDA                                                                     30 AUGUST 2021


Safety Risks                  Mitigation
High-risk work using          The contractor is accredited to AS 4801 (Occupational Health & Safety
machinery and hoisting        Management Systems) and the contractor has demonstrated their capability
involved.                     through the tender process. The contractor is experienced having successfully
                              completed several similar type bridge projects within the past years, moreover,
                              was principal contractor within the Sunrise Beach, Orealla Crescent Bridge
                              replacement project.

Environmental Harm            Mitigation
Risks
Works impact on the           The contractor is responsible for the development and implementation of
environment.                  strategies to minimise impacts such as noise, dust, vibration, sediment and
                              erosion. Approved plans will be in place to manage species such as Tusked
                              Frogs. Necessary tree removal and trimming requirements are brought to a
                              minimum in the design phase and are well specified in the contract
                              specifications. The superintendent and Council staff will closely monitor the
                              construction phase to ensure all impacts are minimised.

Scope and Quality             Mitigation
Risks
Risk of not meeting           To be managed through reviews performed by experienced Superintendent
project objectives.           and Council staff, supported by a specialist consultant.


Public Disruption Risks       Mitigation
Traffic disruption due to     See the 'access during construction' section in this report. Maximum road
total road closure at the     closure durations and timing windows are well specified in the contract and are
site location.                endorsed by an external legal advisor upfront tender release. The current traffic
                              use of both roads at bridge locations is minimal.
Communication issues.         For SP1 – Tablelands Road Bridge B, Council has engaged an external
                              experienced communication / community engagement consultant who will
                              closely work with Council’s Communications and Infrastructure departments,
                              as well with the contractor to inform affected residents and businesses.
                              For SP2 – Wahpunga Lane Bridge, the internal experienced Infrastructure
                              Communications and Consultation Officer is appointed to the project.
Noise from plants and         This will be minimised by working during normal working hours where possible.
equipment may be a
cause of disruption to
residents.
Vibration during piling and   At Tablelands Road Bridge B, the specified piling method of micro piling
demolition.                   (boring) due to the soil conditions minimises vibration.
                              For the Wahpunga Lane Bridge, due to soil conditions, a bored pile solution
                              with steel liners has been specified which uses an auger drill and is less
                              intrusive compared to the usual pile driving. Sheet piles will be used to mitigate
                              the existing scour issue along the eastern bridge approach. Common vibration
                              techniques will be used to install the steel sheet piles during a relatively short
                              duration of around one week expected, pending soil conditions.
Disaster occurs during        For Tablelands Road Bridge B, the experienced contractor uses detailed
construction e.g. bushfire    weather forecasting to plan ahead and will liaise with emergency services
and properties are not        upfront, especially to plan the 72hr full road closure duration (Phase 2).
accessible.                   On-site availability of steel road plates mitigates access constraints for
                              emergency services by providing an ad-hoc access option to all properties
                              behind the bridge outside the 72hr full road closure duration.
                              For Wahpunga Lane Bridge, before the contractor starts deconstructing the
                              existing bridge, detours will be in place. Emergency services, affected
                              residents and road users will be informed regards detours well upfront for them
                              to plan ahead.

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