The Port Botany expansion project involved the reclamation of 60 hectares of land, construction of 1.85km of shipping wharves, together with substantial community and environmental enhancements.
All works were constructed in close proximity to Sydney Airport’s third runway and live port operations. This involved working within strict height limitations imposed by Sydney Airport’s ‘Obstacle Limitation Surface’ due to the close proximity of the works to the third runway. The construction also had to maintain port operation and channel access for fishing  and recreational boats.
A variety of dredges were used to excavate sand used to construct the foundation trench which supports the new wharf structures, to excavate the deep berthing basin, to excavate the navigation channels, open the Penryhn Estuary channel, to construct islands for migratory sea birds and to construct a new beach to the west end of the channel along Foreshore Road promenade. In total over eleven million cubic metres of material was dredged from the bay for use in the reclaimed areas, with all operations controlled to meet strict turbidity compliance requirements.
Other key works included the construction of 5km of rock revetment; a 200m tug berth; a new terminal access bridge and inter terminal rail access corridor; a three hectare four lane public boat ramp and associated facilities; restoration and enhancement of Foreshore Road promenade including footpaths, cycle paths and extensive native vegetation planting; provision of a pedestrian bridge across Foreshore Road linking the local community direct with Foreshore Beach; significant enhancement of the degraded Penryhn Estuary including creation of bird roosting islands, and expansion and regeneration of existing saltmarsh habitat, mudflats and sea grass habitat areas.
Environmental issues and controls that were implemented included; a series of floating booms positioned to restrict the circulation of water from the dredging areas onto the Bay, while still allowing boating traffic through the booms; in some locations within the construction zone, work had to cease when migratory birds came to roost; native vegetation from the degraded parts of the site was propagated and used for replanting in the rejuvenated areas; turbidity in the water was very strictly monitored and successfully controlled. 
Baulderstone is a most worthy winner of the Excellence in Construction Award - Environmental Management for a Project above $20 Million.