Code Assessment - 12 Eenie Creek Rd (RESOLVED DRAFT)

Environmental values of waters and     development scenario. AND
                                                                                existing building footprint, and at the
water quality Protection (Water)       AO6.2 All stormwater runoff is
                                                                                frontage a new garden bed is introduced
Policy 2009 and are identified on      treated to achieve maximum
                                                                                while the existing frontage garden is
the State Planning Policy              removal of nutrients, gross
                                                                                removed, so the net change is minor. Any
Interactive Mapping System.            pollutants and suspended solids as
                                                                                regrading associated with the accessible
                                       determined by cost to efficiency
                                                                                parking space is localised and will
                                       ratios. (e.g. bioretention basins must
                                                                                maintain existing drainage patterns and
                                       be sized to achieve at least 80%
                                                                                the existing point of discharge. No change
                                       reduction in total suspended solids,
                                                                                to the stormwater management system is
                                       60% reduction in total phosphorous,
                                                                                proposed. Confirmation of finished
                                       45% reduction in total nitrogen and
                                                                                surface treatment is a matter for detailed
                                       90% reduction in gross polluta
                                                                                design and is capable of being
                                                                                conditioned.

PO7                                    AO7.1
                                                                                Complies with PO
Water quality treatment systems        Water quality treatment systems
                                                                                The site is presently developed and
use natural processes and materials,   are designed to be integrated into
                                                                                sealed, and stormwater discharges to the
whenever possible, and are             the landscape consistent with the
                                                                                existing lawful point of discharge. The
integrated into development to         technical design guideline
                                                                                proposal does not materially alter the
enhance biodiversity and landscape     published by Healthy Land and
                                                                                impervious area: the works are within the
benefits.                              Water Water by Design for the
                                                                                existing building footprint, and at the
                                       feature. (eg. For Bioretention
                                                                                frontage a new garden bed is introduced
                                       Basins: Bioretention Technical
                                                                                while the existing frontage garden is
                                       Design Guidelines (October 2014)
                                                                                removed, so the net change is minor. Any
                                       and for Wetland Systems the
                                                                                regrading associated with the accessible
                                       Wetland Technical Design
                                                                                parking space is localised and will
                                       Guideline (May 2017).
                                                                                maintain existing drainage patterns and
                                                                                the existing point of discharge. No change
                                                                                to the stormwater management system is
                                                                                proposed. Confirmation of finished
                                                                                surface treatment is a matter for detailed
                                                                                design and is capable of being
                                                                                conditioned.

PO8                                    AO8.1, AO8.2, AO8.3
                                                                                Complies with PO
Water quality treatment                Detailed life cycle costing is
                                                                                The site is presently developed and
infrastructure to be dedicated as      provided for the entire treatment
                                                                                sealed, and stormwater discharges to the
public assets are proven to be         train system including replacement
                                                                                existing lawful point of discharge. The
suitable for its use and of a cost     costs of asset parts.
                                                                                proposal does not materially alter the
effective and efficient standard.      AO8.2 Treatment systems dedicated
                                                                                impervious area: the works are within the
Performance Outcomes                   as public assets are designed to
                                                                                existing building footprint, and at the
                                       minimise maintenance, renewal and
                                                                                frontage a new garden bed is introduced
                                       adaption costs and the requirement
                                                                                while the existing frontage garden is
                                       for specialised equipment, material
                                                                                removed, so the net change is minor. Any
                                       or maintenance techniques.
                                                                                regrading associated with the accessible
                                       AO8.3 Vegetated stormwater
                                                                                parking space is localised and will
                                       management systems to be
                                                                                maintain existing drainage patterns and
                                       dedicated as Acceptable Outcomes
                                                                                the existing point of discharge. No change
                                       public assets are established and
                                                                                to the stormwater management system is
                                       maintained during the maintenance
                                                                                proposed. Confirmation of finished
                                       period to ensure optimal vegetated
                                                                                surface treatment is a matter for detailed
                                       growth and that the functional
                                                                                design and is capable of being
                                       elements of the system achieve the
                                                                                conditioned.
                                       design function at the en

PO9                                    AO9.1, AO9.2
                                                                                Complies with PO
Treatment systems are designed to      Free draining inlets and outlets are
                                                                                The site is presently developed and
eliminate or minimise health, safety   provided to ensure that waters do
                                                                                sealed, and stormwater discharges to the
and aesthetic hazards, including       not pond for more than 24 hours.
                                                                                existing lawful point of discharge. The
risks associated with insect           AO9.2 Developments are designed
                                                                                proposal does not materially alter the
breeding, odour and public safety.     to eliminate retaining walls in
                                                                                impervious area: the works are within the
Hydrology and waterway stability       excess of 0.8m for any water quality