the management and restoration of the publicly accessible open space as well as Timbertop reserve, which borders the proposed development, and then downstream, following the connected open space, towards the recently constructed wetlands near Lancelot Street, Prospect.
69 The key elements are:
· Conservation and bush regeneration of 0.69 ha of CPW in Lot 30.
· Management of 0.68ha of APZ in Lot 30. This will include emergent trees, with a discontinuous canopy, and grassy understorey only.
· Bush regeneration of 3ha of existing remnant vegetation on Timbertop Reserve.
· Revegetation of 4.4 ha of cleared areas in Timbertop Reserve and along the drainage line heading north
· The top 10cm of soil on areas of the site to be cleared will be removed to provide a seed bank of Shale Plains Woodland (SPW) to be used on the adjoining site. The areas along the drainage line will be revegetated with Sydney Coastal River Flat Forest (SCRFF).
70 The VMP (Exhibit N at Appendix C) includes a breakdown of costs for the offset. The total costs of the offset package are $229,060 (excl GST), about $250,000 in total.
71 In relation to Lot 30 the total costs are $43,880 (excl GST). These include:
· $3,600 for the establishment of APZ
· $16680 for bush regeneration for three years (4 sessions per year)
· $20,000 contribution to the Community Trust Fund for ongoing maintenance
72 In relation to the works off site, the total costs are $185,180 (excl GST). These include $51,000 for the revegetation of 4ha and $38,080 for bush regeneration of 3ha. Details and costings of the revegetation of the drainage line to the north of the site are not specifically stated, however, I presume they are included within the costs of the 4 ha specified as revegetation.
73 The total area of the offset in the VMP is 8.55ha, of which 1.55ha (consisting of the CPW and APZ) is on site and 7ha is offsite. The represents a ratio of 1:32:1 of offset to area cleared based on the area of CPW cleared being 2.62ha.
74 The VMP states that it "provides a clear, concise and practice framework for the restoration and management of vegetation throughout the proposed sites for a period of three years". Dr Robertson expressed concern about the long term management of the offsets beyond the establishment phase. The applicant has agreed to a maintenance period of 10 years on the basis that most of the financial expenditure will occur in the three year establishment period. The expenditure is limited to $250, 000.
75 The experts held different opinions as to the adequacy of the offset ratio but generally agreed with the DEC principles that the offset should be greater than the area cleared. As a rule of thumb the DEC suggests that: