Hawkesbury Stormwater Conditions

66. Tree Protection Measures The following measures are to be followed during construction: a) The Tree Protection Zones of all retained trees must be protected by way of fencing and signage designed and located in accordance with AS4970: Protection of trees on development sites. In this regard, any fencing required to be constructed around the TPZ is to be in accordance with AS4687 Temporary fencing and hoardings; b) All tree protection works including installation of any fencing is to be undertaken prior to any the commencement of any works on site. A 1.8 metre high chain mesh fence must be erected around each Tree Protection Zone prior to works and must remain intact until construction…

The contractor undertaking the subdivision construction work is responsible for instructing sub-contractors or service authority providers of this requirement. Contact Council’s Development Engineer if it is unclear whether a separate Road Opening Permit is required. Operations and Maintenance Manual One hardcopy set and an electronic file of the operations and maintenance manual for the constructed stormwater quality management system and structures must be submitted to the Council prior to the dedication of land to Council in accordance with the Voluntary Planning Agreement (VPA) between Hawkesbury City Council, Roads and Maritime Services, Eric Nominees Australia Pty Ltd atf the Redbank…

All provisions for internal roads must comply with the Planning for Bush Fire Protection 2019 (or be otherwise supported by the Rural Fires Service in a Bushfire Safety Authority), Section 3.1.1 of the Jacaranda Development Control Plan and Hawkesbury Development Control Plan, Appendix E: Civil Works Specification. Details demonstrating compliance with the above requirement are to be submitted to Council for all subdivision Development Applications. Condition reason: To ensure suitable road layout provided and in compliance with relevant standards. 14 Stormwater quantity control – Design Requirements All provisions for stormwater quantity control must comply with the Section 2.2.6 of the…

31. Detailed Drainage Design A detailed drainage design of the site must be submitted to and approved by the Certifier prior to the release of the Construction Certificate. The detailed plan must: a) be generally in accordance with drawing No.s C.DA.10 rev P5, C.DA.11 rev P4, C.DA.11A rev P2, C.DA.12 rev P5, C.DA.13 rev P4, C.DA.14 rev P4, C.DA.15 rev P4, prepared by Birzulis Associates. The above civil works concept plans and stormwater plans must be revised and be consistent with the approved architectural plans; b) drain to the stormwater drainage system; c) indicate the method of disposal of all stormwater and must include existing ground levels, finished surface levels on all paved…

85. On-site Stormwater Detention - Positive Covenant Required A positive covenant must be created on the title of the land providing the following: a) the registered proprietors will at all times maintain, repair and keep the on-site stormwater detention facilities in a good and safe condition and state of repair, in accordance with the approved design to the reasonable satisfaction, at all times, of Council, having due regard to the Plan of Management for the operation and maintenance of the on-site stormwater detention facilities; b) the liability under the Covenant will jointly and severally bind the registered proprietors of the proposed dwellings; and c) Council only will be entitled…

79. Topsoil and Material Stockpiles Management Topsoil must only be stripped from approved areas and must be stockpiled for re-use during site rehabilitation and landscaping. Stockpiles of topsoil, sand, aggregate, spoil or other material stored on the site that is capable of being moved by running water must be stored clear of any drainage line or easement, natural watercourse, footpath, kerb, and/or road surface. Suitable sediment and erosion control devices must be installed prior to the stockpile being created. The stockpile must be treated so its surface is erosion resistant to wind and water action. Prior to Issue of Occupation Certificate In the event the development is staged for…

28. On Site Stormwater Detention Design Compliance On-Site Detention (OSD) for stormwater is required to be provided for this development. Details including calculations are to be shown on plans submitted for the Construction Certificate to the Satisfaction of the Certifier. OSD must comply with the following: a) OSD must be provided to maintain all stormwater discharges for storms up to the 1 in 100 Average Recurrence Interval storm event at pre-development levels; and b) the OSD system is to be designed in accordance with the Hawkesbury Development Control Plan - Appendix E, Civil Works Specification (Part 1 - Design Specifications and Part 2 - Construction Specifications). Details…

6. Civil Works Specification - Private Land Council requires the following works to be carried out as part of the development: a) Earthworks; b) Stormwater drainage work; d) On-site-detention (OSD) system; and e) Access and car parking. All civil construction works required by this consent must be undertaken in accordance with Hawkesbury Development Control Plan Appendix E Civil Works Specification. A Construction Certificate is required to be in force prior to work commencing. It may be necessary to obtain appropriate Compliance Certificates for certain aspects of the development prior to the issue of a Construction Certificate. Inspections must be carried out either by Council or a…

67. Sydney Water - Endorsement of Approved Plans The approved plans must be submitted to and endorsed by Sydney Water via the 'Sydney Water Tap-in' website to determine whether the development will affect Sydney Water's water mains, stormwater drains and/or easements, and if further requirements need to be met. Plans will be appropriately stamped. Please refer to Sydney Water's website. Evidence of the building plan approval must be forwarded to the Principal Certifier prior to the commencement of works. During Construction

83. On-site Stormwater Detention - Plan of Management A Plan of Management for the on-site stormwater detention facilities must be prepared setting out all design and operational parameters for the detention facilities including design levels, hydrology and hydraulics, inspection, maintenance requirements and time intervals for such inspection and maintenance. The Plan of Management is to be submitted to and approved by Council prior to the issue of the Occupation Certificate for the relevant stage.

86. On-site Stormwater Detention - Compliance Certification Upon completion of the on-site stormwater detention system, certification from a consulting engineer and a works as executed drawing are to be provided to Council stating that the works are in accordance with or satisfy the design intent of the approved system. Details demonstrating compliance are to be submitted to the Certifier prior to the issue of Occupation Certificate for the relevant stage.

64. Erosion and Sediment Control for Minor Development Erosion and sediment control devices are to be installed and maintained until the site is fully stabilised in accordance with Hawkesbury Council’s publication Guidelines for Erosion and Sediment control on a building site (2017).

73. Overland Stormwater Flow Management The works associated with the development must ensure that: a) all natural water flow from adjoining properties is not impeded or diverted; and b) surface and subsurface water flows are not redirected or concentrated onto adjoining properties.