8. Appendix E - Previous Approval

 

37.

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version of the Water Sensitive Urban Design Technical Design Guidelines for South East
Queensland, and must include in particular:

(a) stormwater quality treatment devices of a size and location generally in
accordance with those shown in section 5 of the of the Site Based Stormwater
Management Plan listed in this Decision Notice.

(b) bioretention devices which:

(i) are designed generally in accordance with IPWEQA Standard Drawing No.
WSUD-001.

(ii) incorporate a coarse sediment forebay (in addition to the required filter
media surface area), which is sized in accordance with the latest version of
the Water Sensitive Urban Design Technical Design Guidelines for South
East Queensland and designed generally in accordance with IPWEQA
Standard Drawing No. WSUD-005.

(iii) | have safe, unobstructed and all weather access from the road frontage for
maintenance purposes, particularly for the coarse sediment forebay.

(iv) are provided with a high flow bypass to ensure that flows which exceed the
treatment capacity of the device are bypassed in order to avoid damaging
of the filter media or subjecting the filter media to excessive sediment
loads.

(v) are provided with a free-draining outlet from the sub-soil drainage system.

(vi) treat stormwater from all developed catchments (including roof and carpark
catchments) prior to discharge.

Permanent educational signage must be erected to educate the customers to the
development about the function of the bioretention device(s). The dimensions, standard,
presentation and location of the educational signage must be in accordance with an
Operational Works approval. *(Refer to Advisory Note)

Vegetated Devices

All stormwater quality treatment devices must be maintained in accordance with the
Water by Design (2009) Maintaining Vegetated Stormwater Assets (Version 1). The
approved Operational Works drawings for the stormwater quality treatment system and
detailed life cycle costing of the system must be attached as an addendum to this
document. Records of all maintenance activities undertaken must be kept and made
available to Council upon request.

Rainwater Harvesting

Operating rainwater collection tanks must be provided for the development. The tanks
must be provided in accordance with an Operational Works approval and must include in
particular:

(a) the details identified in section 5 of the Site Based Stormwater Quality
Management Plan listed in this Decision Notice

(b) a total tank capacity of 50 000 litres
(d) re-use of harvested rainwater for internal non-potable uses and outdoor uses.

Certification must be submitted to Council from a qualified person* which certifies that the
rainwater collection tank and associated reticulation have been installed in accordance
with the requirements of this Decision Notice. *(Refer to Advisory Note)

Easements

Unless otherwise agreed in writing by the relevant service provider, any public or third
party infrastructure located on the subject site must be placed within an easement

 

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