Conditions 23, 24, 25, 26, 27, 28, 29, 31 and 52A.
- These conditions state:
23. The north western stormwater on site detention basin is to be utilised for sedimentation and erosion control during the construction phase of building works for| 52dwellings on the residential lots (Lots 16-83) approved by the development consent ;
a). the north western stormwater on site detention basin is to be utilised for sedimentation and erosion control, and
b) the owner of Lot 1 is to maintain and repair that basin and all works associated with it, in good working order.
24 Within one month of the construction of 52 dwellings on the residential lots (Lots 216-83), and prior to release of the bond referred to in condition 57;
a) The sediment basin is to be decommissioned and the water sensitive urban design / bio filtration works component of the basin must be completed
b) The WSUD assets / measures are to be constructed and operate in accordance with the approved design specifications / parameters and any other specific design previously entered into with Council
c) The performance of the WSUD measure(s) must have been validated, which must include the provision of a Performance Validation Report supporting the performance of the WSUD measure
d) Where applicable, the build-up of sediment must have resulted in no more than a 10% reduction of operational volume
e) Asset inspections for defects must have been completed and, if any defects are found, rectified to the satisfaction of Council
f) The WSUD infrastructure is to have been provided to the satisfaction of Council, structurally and geotechnically sound (this will require the submission of documents demonstrating that such infrastructure has been certified by suitably qualified persons)
g) Design drawings have been supplied in a format acceptable to Council
h) Works as Executed (WAE) drawings are to have been supplied for all infrastructure in a format and level of accuracy acceptable to Council
i) Other relevant digital files are to have been provided (e g design drawings, surveys, bathymetry, models etc)
j) Landscape designs are to have been supplied, particularly those detailing the distribution of functional vegetation, i e vegetation that plays a role in water quality improvement (clearance certificates from the landscape architect will need to be supplied)
25. 6 months following the completion of water sensitive urban design / bio filtration works, and before any development consent is granted for any development on Lot 1 (the large remainder lot approved in this consent), the north western stormwater on site detention basin must be dedicated to Council.
26. Until the time that the north western stormwater on site detention basin is dedicated to Council the owner of Lot 1 must maintain and repair the north western stormwater on site detention basin.
27. Prior to the issue of Construction Certificate for the subdivision works a s88E Conveyancing Act public positive covenant is to be lodged on title requiring the owner to
a) Permit use of the north western stormwater-on site detention basin for sedimentation and erosion-control during the construction phase of building works for dwellings on the residential lots (Lots 2 83) approved by this development consent
b) Within one month of the construction of 65 dwellings on the residential lots (Lots 2-83) the sediment basin is to be decommissioned and the water sensitive urban design / bio filtration works component of the basin must be completed
c) maintain and repair the north western stormwater on site detention basin and all works associated with it, in good working order, until it is dedicated to Council.
d) a maintain the landscaping in and around the bioretention basin, including by weeding, replacing dead plants and keeping the landscaping in good order until it is dedicated to Council
28. With-the issue of the Subdivision Certificate for the subdivision works a s 88E Conveyancing Act public positive covenant is to be lodged on title of Lot 1 requiring the owner to-Permit the use of the north western stormwater on site detention basin for sedimentation and erosion control during the construction phase of building works for dwellings on the residential lots (Lots 2-83) approved by this development consent
a) Within one month of the construction of 65 dwellings on the residential lots (Lots 2-83) the sediment boom is to be decommissioned and the water sensitive urban design / bio filtration works component of the basin must be completed
b) maintain and repair the north western stormwater on site detention basin and all works associated with it, in good working order, until it is dedicated to Council
c) maintain the landscaping in and around the bioretention basin, including by weeding, replacing dead plants and keeping the landscaping in good order until it is dedicated to Council.
29. Prior to the dedication of the north western stormwater on site detention basin the following conditions must be met to Council's satisfaction
The WSUD assets / measures are constructed and operate in accordance with the approved design specifications / parameters and any other specific design agreements previously entered into with Council
The performance of the WSUD measure(s) has boon validated, which must include the provision of a Performance Validation Report supporting the performance of the WSUD measure
Where applicable, the build up of sediment has resulted in no more than a 10% reduction of operational volume
Asset inspections for defects has been completed and, if any defects arc found, rectified to the satisfaction of Council
The WSUD infrastructure is to the satisfaction of Council, structurally and geotechnically sound (this will require the submission of documents demonstrating that such infrastructure has been certified by suitably qualified persons)
Design drawings have been supplied in a format acceptable to Council Works as Executed (WAE) drawings have boon supplied for all infrastructure in a format and level of accuracy acceptable to Council
Other relevant digital files have boon provided (c g design drawings, surveys, bathymetry, models etc)
Landscape designs have boon supplied, particularly those detailing the distribution of functional vegetation, i c vegetation that plays a role in water quality improvement (clearance certificates from the landscape architect will need to be supplied) -The condition of the infrastructure and associated with the land complies with the approved design specification
Filter media infiltration rates are within 10% of the rates of the design parameters for the filtration system concerned) Comprehensive operation and maintenance manuals (including indicative costs) have
been provided The plan should include details on the following
i. Site description (area, imperviousness, land use, annual rainfall
ii. Site access description
iii. Likely pollutant types, sources and estimated loads
iv. Locations, types and descriptions of measures proposed
v. Operation and maintenance responsibility
vi. Inspection methods (including inspection checklists)
vii. Maintenance methods (frequency, equipment and personnel requirements),
viii. Landscape and weed control requirements
ix. Operation and maintenance costs,
x. Waste management and disposal options, and
xi. Reporting
31. The detention basin approved as part of this consent must be constructed as a permanent basin -
a) dedicated to Council at no cost prior to the issue of any development consent for Lot 1 or any subdivision consent for Lot 1 unless the drainage system the subject of this development consent is connected to the Regional Basin to the north west of this site. It is noted that details of such connection are not approved in this development consent, and may require further development consent
52A The s 88B instrument for the subdivision is to include the grant of an easement in gross under section 88A of the Conveyancing Act 1919 which
a) permits the use by Council of the north western stormwater on site detention basin for drainage, sedimentation and erosion control, and rights of access sufficient to maintain the basin
b) provides for termination and release of the easement at such time as the stormwater basin described in Council's Precinct Strategy 2004 has been constructed and become operational on Lot 1 DP 1226122 (the adjacent property adjoining to the immediate west),
c) prevent alteration to the basin until release of the easement.
- These conditions raise a fundamental difference between the parties; being the location and ongoing maintenance of the temporary on- site detention basin to deal with stormwater from the proposed development given the absence of the planned regional stormwater detention basin. The conditions raise the following questions: