Monorail Removal Project - Review of Environmental Factors (REF)

Table 9.6 Assessment of impacts of work component 6Noise sourceIs the noisesourcesignificant inrelation toother noises inthe area?Does thenoise sourceinclude tonesof impulses?Does thenoise sourceoccur attimes thatinterfere withsleep ofcomfort?Isexaminationof workpracticesnecessary?Trucks for scrapHand toolsAngle grinderMobile crane forsubstation removal (nightworks)Truck for substationremoval (night works)no (during theday)no (during theday)no (during theday)yes, reversingalarmsNono (for dayworks)no no no (for dayworks)yes no no (for dayworks)yes no Yes yes (for nightworks)yesyes, reversingalarmsYesyes (for nightworks)The assessment indicates that works associated with substation removal would result in someshort term noise impacts estimated to be one to two consecutive nights. The work practices andmitigation measures detailed in section 9.6 would be implemented to reduce noise levels.9.4.5 Traffic noise impactsThe proposal would generate additional traffic on public roads. These impacts would mainly beassociated with transport of machinery and equipment to the site, disposal of materials usingtrucks, and removal of machinery once the works are complete. Traffic diversions may also altertraffic patterns in the study area. Section 7 and Technical Paper 1 address traffic and accessissues.Traffic routes for works vehicles would not typically use local roads, and would access the worksites from major arterial roads with high existing traffic volumes. Traffic diversions are notanticipated to be in place for extended periods of time (that is, more than three weeks).Therefore, the additional traffic generation and traffic diversions are not anticipated tosignificantly increase noise levels on the existing road network for extended periods of time. Theproposal would be acceptable from a traffic noise perspective, given the low volumes of vehiclesassociated with the works.A detailed traffic management plan would be prepared detailing specific routes that traffic wouldfollow through the proposal area.9.5 Impact assessment - vibrationEnergy from works equipment is transmitted into the ground and transformed into vibration,which attenuates with distance. The magnitude and attenuation of ground vibration depends on:• the efficiency of the energy transfer mechanism of the equipment (that is, impulsive;reciprocating, rolling or rotating equipment)• the frequency content• the impact medium stiffness86 | GHD | Transport for NSW - Monorail Removal Project REF