Willoughby Stormwater Conditions

1. Modification of Consent for DA-2021/300 This consent requires the modification of development consent DA-2021/300 approved on 2 February 2022 for demolition of existing dwellings and construction of 5 residential flat buildings comprising 154 units over basement car parking as a two staged development. The modification is to be effected under section 4.17(1)(b) and section 4.17(5) of the Environmental Planning and Assessment Act 1979 prior to the activation of this development consent DA-2024/159. The required modifications:  are to be set out in a notice of modification of development consent DA- 2021/300; and  must be lodged with the consent authority, in compliance with the…

18. Design of Works in Public Road (Roads Act Approval) – Stage 1 Prior to issue of any Construction Certificate for Stage 1 works, the applicant must submit, for approval by Council as a road authority, full design engineering plans and specifications prepared by a suitably qualified and experienced civil engineer for the following infrastructure works: (a) Construction of 3.0 metres wide shared path, or narrower width as agreed with Council’s Engineers, (max. 2.5% crossfall) towards the kerb for the full Stage 1 frontage of the development site on the north side of Walter Street in accordance with Council’s specification and Standard Drawings SD105 and SD100. All adjustments to public…

19. Design of Works in Public Road (Roads Act Approval) – Stage 2 Prior to issue of any Construction Certificate for Stage 2, the applicant must submit, for approval by Council as a road authority, full design engineering plans and specifications prepared by a suitably qualified and experienced civil engineer for the following infrastructure works: (a) Construction of 3.0metres wide shared path (or narrower width as agreed with Council’s Engineers) (max. 2.5% crossfall) towards the kerb the north side of Walter Street from the junction with the Stage 1 works to the connection point with the future link to the Gore Hill Freeway shared path, just to the west of 18 Walter Street in accordance…

2. Approved Plan/Details The development must be in accordance with the following consent plans electronically stamped by Council: Revision/ Plan Date (as Type Plan No. Issue No Amended) Prepared by Project Summary DA001 02 04.07.2025 PBD Architects Demolition Plan DA002 01 14.09.2023 PBD Architects Setback Plan DA005 01 14.09.2023 PBD Architects Basement 4 DA101 04 04.07.2025 PBD Architects Basement 3 DA102 04 04.07.2025 PBD Architects Basement 2 DA103 04 04.07.2025 PBD Architects Basement 1 DA104 05 04.07.2025 PBD Architects Basement Mezzanine DA105 05 04.07.2025 PBD Architects Ground Floor DA106 05 04.07.2025 PBD Architects Level 1 DA107 05 04.07.2025 PBD Architects Reference:…

2. Approved Plan/Details The development must be in accordance with the following consent plans electronically stamped by Council: Reference: DA-2023/256 Page 1 of 57 PPSSNH-433 Revision/ Plan Date (as Type Plan No. Prepared by Issue No Amended) Demolition Plan DA002 01 14.09.2023 PBD Architects Setback Plan DA005 01 14.09.2023 PBD Architects Basement 4 DA101 04 04.07.2025 PBD Architects Basement 3 DA102 04 04.07.2025 PBD Architects Basement 2 DA103 04 04.07.2025 PBD Architects Basement 1 DA104 05 04.07.2025 PBD Architects Basement Mezzanine DA105 05 04.07.2025 PBD Architects Ground Floor DA106 05 04.07.2025 PBD Architects Level 1 DA107 05 04.07.2025 PBD Architects Level 2 DA108 05…

7. Transport for NSW Conditions TfNSW provide concurrence to the proposed driveway closure works and awning on Strathallen Road subject to Council’s approval and the following conditions: I. The redundant driveways on the Strathallen Road boundary shall be removed and replaced with kerb and gutter to match existing. The design and construction of the kerb and gutter on Strathallen Road shall be in accordance with TfNSW requirements. Details of these requirements should be obtained by email to developerworks.sydney@transport.nsw.gov.au. a. Detailed design plans of the proposed kerb and gutter are to be submitted to TfNSW for approval prior to the issue of a construction certificate and…

5. Transport for NSW The following conditions from Transport for NSW must be complied with: • All buildings and structures (other than pedestrian footpath awnings), together with any improvements integral to the future use of the site are to be wholly within the freehold property unlimited in height or depth along the Eastern Valley Way boundary. • Detailed design plans and hydraulic calculations of any changes to the stormwater drainage system that impact upon Eastern Valley Way are to be submitted to TfNSW for approval, prior to the commencement of any works. Please send all documentation to development.sydney@transport.nsw.gov.au. A plan checking fee will be payable, and a performance…

129. CCTV Report of Council Pipe System After Work Prior to the issue of any Occupation Certificate, a qualified practitioner, with qualifications/training in accordance with Water Services Association of Australia WSA05- 2013 Conduit Inspection Reporting Code of Australia Version 3.1, shall undertake a closed circuit television (CCTV) inspection and then report on the condition of the Council drainage system located Deepwater Road after the completion of all works. No person is to enter any Council stormwater conduit without written approval from Council. The camera and its operation shall comply with the following: - (a) The internal surface of the drainage pipe shall be viewed and…

75. CCTV Report of Council Pipe System After Work Prior to the issue of an Occupation Certificate for Stage 1 and Stage 2 works, a qualified practitioner, with qualifications/training in accordance with Water Services Association of Australia WSA05-2013 Conduit Inspection Reporting Code of Australia Version 3.1, shall undertake a closed circuit television (CCTV) inspection and then report on the condition of the new stormwater drainage pipes constructed in the road reserve, including along the north side of Walter Street. No person is to enter any Council stormwater conduit without written approval from Council. The camera and its operation shall comply with the following: - (a) The…

119. S88B/S88E(3) Instrument Create Positive Covenant and Restriction on the Use of Land on the Title in favour of Council as the benefiting authority for the as-built on-site stormwater detention (OSD) system and stormwater treatment system. The standard wording of the terms of the Positive Covenant and Restriction on the Use of Land are available in Council’s Technical Standards. The above instruments shall be created under Section 88B of the Conveyancing Act 1919 for newly created lots. For an existing lot, the instruments can be created under Section 88E(3) of the Conveyancing Act 1919 using Form 13PC and 13RPA respectively. The size and relative location of the OSD system and…

111. S88B/S88E(3) Instrument Create Positive Covenant and Restriction on the Use of Land on the Title in favour of Council as the benefiting authority for the as-built on-site stormwater detention (OSD) system and stormwater treatment system. The standard wording of the terms of the Positive Covenant and Restriction on the Use of Land are available in Council’s Technical Standards. The above instruments shall be created under Section 88B of the Conveyancing Act 1919 for newly created lots. For an existing lot, the instruments can be created under Section 88E(3) of the Conveyancing Act 1919 using Form 13PC and 13RPA respectively. The approved plan of subdivision is to be updated prior to any…

109. S88B/S88E(3) Instrument Create Positive Covenant and Restriction on the Use of Land on the Title in favour of Council as the benefiting authority for the as-built on-site stormwater detention (OSD) system and stormwater treatment system. The standard wording of the terms of the Positive Covenant and Restriction on the Use of Land are available in Council’s Technical Standards. The above instruments shall be created under Section 88B of the Conveyancing Act 1919 for newly created lots. For an existing lot, the instruments can be created under Section 88E(3) of the Conveyancing Act 1919 using Form 13PC and 13RPA respectively. The size and relative location of the OSD system and…

115. S88B/S88E(3) Instrument Create Positive Covenant and Restriction on the Use of Land on the Title in favour of Council as the benefiting authority for the as-built on-site stormwater detention (OSD) system and stormwater treatment system. The standard wording of the terms of the Positive Covenant and Restriction on the Use of Land are available in Council’s Technical Standards. The above instruments shall be created under Section 88B of the Conveyancing Act 1919 for newly created lots. For an existing lot, the instruments can be created under Section 88E(3) of the Conveyancing Act 1919 using Form 13PC and 13RPA respectively. The size and relative location of the OSD system and…

50. Dewatering of Development Site Appropriate pollution control methods shall be adopted to ensure any water discharged into Council’s stormwater system from dewatering or pumping activity on the development site complies with relevant environmental criteria. Reference: DA-2023/256 Page 25 of 59 PPSSNH-433 A Construction Site Dewatering Plan (CSDP) shall be prepared by a suitably qualified environmental consultant and submitted to Council for approval prior to the commencement of any work. The CSDP can be incorporated into any Construction Management Plan covering the entirety of siteworks to be carried out on the site, or can be a stand-alone document. It shall contain details on the…

43. Dewatering of Development Site Appropriate pollution control methods shall be adopted to ensure any water discharged into Council’s stormwater system from dewatering or pumping activity on the development site complies with relevant environmental criteria. A Construction Site Dewatering Plan (CSDP) shall be prepared by a suitably qualified environmental consultant and submitted to Council for approval prior to the commencement of any work. The CSDP can be incorporated into any Construction Management Plan covering the entirety of siteworks to be carried out on the site, or can be a stand-alone document. It shall contain details on the water treatment method, equipment to be used, water…

24. Dewatering of Development Site Appropriate pollution control methods shall be adopted to ensure any water discharged into Council’s stormwater system from dewatering or pumping activity on the development site complies with relevant environmental criteria. A Construction Site Dewatering Plan (CSDP) shall be prepared by a suitably qualified environmental consultant and submitted to Council for approval prior to the commencement of any work. The CSDP can be incorporated into any Construction Management Plan covering the entirety of siteworks to be carried out on the site, or can be a stand-alone document. It shall contain details on the water treatment method, equipment to be used, water…

42. Dewatering of Development Site Appropriate pollution control methods shall be adopted to ensure any water discharged into Council’s stormwater system from dewatering or pumping activity on the development site complies with relevant environmental criteria. A Construction Site Dewatering Plan (CSDP) shall be prepared by a suitably qualified environmental consultant and submitted to Council for approval prior to the commencement of any work. The CSDP can be incorporated into any Construction Management Plan covering the entirety of siteworks to be carried out on the site, or can be a stand-alone document. It shall contain details on the water treatment method, equipment to be used, water…

57. Site Management A site Management Plan shall be submitted to and approved by the Certifier prior to commencement of work. The site management plan shall include the following measures as applicable. (a) Details and contact telephone numbers of the owner, builder and developer; (b) Location and construction details of protective fencing to the perimeter of the site; (c) Location of site storage areas, sheds and equipment; (d) Location of stored building materials for construction; (e) Provisions for public safety; (f) Dust control measures; (g) Site access location and construction; (h) Details of methods of disposal of demolition materials; (i) Protective measures for tree preservation;…

60. Site Management A site Management Plan shall be submitted to and approved by the Certifier prior to commencement of work. The site management plan shall include the following measures as applicable. (a) Details and contact telephone numbers of the owner, builder and developer; (b) Location and construction details of protective fencing to the perimeter of the site; (c) Location of site storage areas, sheds and equipment; (d) Location of stored building materials for construction; (e) Provisions for public safety; (f) Dust control measures; (g) Site access location and construction; (h) Details of methods of disposal of demolition materials; (i) Protective measures for tree preservation;…

53. Site Management A site Management Plan shall be submitted to and approved by the Certifier prior to commencement of work. The site management plan shall include the following measures as applicable: (a) Details and contact telephone numbers of the owner, builder and developer; (b) Location and construction details of protective fencing to the perimeter of the site; (c) Location of site storage areas, sheds and equipment; (d) Location of stored building materials for construction; (e) Provisions for public safety; (f) Dust control measures; (g) Site access location and construction; (h) Details of methods of disposal of demolition materials; (i) Protective measures for tree preservation;…

35. Site Management A site Management Plan shall be submitted to and approved by the Certifier prior to commencement of work. The site management plan shall include the following measures as applicable. (a) Details and contact telephone numbers of the owner, builder and developer; (b) Location and construction details of protective fencing to the perimeter of the site; (c) Location of site storage areas, sheds and equipment; (d) Location of stored building materials for construction; (e) Provisions for public safety; (f) Dust control measures; (g) Site access location and construction; (h) Details of methods of disposal of demolition materials; (i) Protective measures for tree preservation;…

83. S88B/S88E(3) Instrument Create Positive Covenant and Restriction on the Use of Land on the Title in favour of Council as the benefiting authority for the as-built on-site stormwater detention (OSD) system. The standard wording of the terms of the Positive Covenant and Restriction on the Use of Land are available in Council’s Technical Standards. The above instruments shall be created under Section 88B of the Conveyancing Act 1919 for newly created lots. For an existing lot, the instruments can be created under Section 88E(3) of the Conveyancing Act 1919 using Form 13PC and 13RPA respectively. The size and relative location of the OSD system, in relation to the building footprint and…

30. Amended Landscape Plan The following details must be shown on amended Landscape Plan(s): (a) Planting within the 4m setback from the Pacific Highway frontage must be at the same ground level as the adjoining footpath (i.e., not in a raised garden beds) to ensure a contiguous soil connection profile beneath the 3m shared path and road reserve planting areas. a. An exception applies to the narrow garden bed between the building frontage and the ramped accessible access, which may be constructed as a raised planter above the OSD tank. (b) The road reserve planting and shared path on the Pacific Highway frontage must comply with the following: a. A 1.5m wide planted verge must be provided,…

101. Testing to Verify Water Quality Prior to Dewatering Activity (a) On the occasion that any rainfall or other event necessitates dewatering of the site, ongoing water quality sampling, analysis and collation of results shall be conducted prior to each discharge to Council’s stormwater system (or other receiving watercourse). Should test results exceed the water quality criteria, dewatering is not permitted and adjustments to the pollution control methodology will need to be made by the suitably qualified environmental consultant. Any changes to the methodology require the written notification of Council. (b) A copy of the up-to-date Council-approved Construction Site Dewatering Plan (or…

91. Testing to Verify Water Quality Prior to Dewatering Activity (a) On the occasion that any rainfall or other event necessitates dewatering of the site, ongoing water quality sampling, analysis and collation of results shall be conducted prior to each discharge to Council’s stormwater system (or other receiving watercourse). Should test results exceed the water quality criteria, dewatering is not permitted and adjustments to the pollution control methodology will need to be made by the suitably qualified environmental consultant. Any changes to the methodology require the written notification of Council. (a) A copy of the up-to-date Council-approved Construction Site Dewatering Plan (or…

77. Dust Control The following measures must be taken to control the emission of dust: (a) Dust screens must be erected around the perimeter of the site and be kept in good repair for the duration of the work. (b) Any existing accumulation of dust (e.g. in ceiling voids and wall cavities) must be removed using an industrial vacuum cleaner fitted with a high efficiency particulate air (HEPA) filter. (c) All dusty surfaces and activities must be wet down and any dust created must be suppressed by means of a fine water spray. Water used for dust suppression must not be allowed to enter the street or stormwater system. Activities could include, but are not limited to, rock-breaking, excavation,…

80. Testing to Verify Water Quality Prior to Dewatering Activity • On the occasion that any rainfall or other event necessitates dewatering of the site, ongoing water quality sampling, analysis and collation of results shall be conducted prior to each discharge to Council’s stormwater system (or other receiving watercourse). Should test results exceed the water quality criteria, dewatering is not permitted and adjustments to the pollution control methodology will need to be made by the suitably qualified environmental consultant. Any changes to the methodology require the written notification of Council. • A copy of the up-to-date Council-approved Construction Site Dewatering Plan (or other…

88. Dust Control The following measures must be taken to control the emission of dust: (a) Dust screens must be erected around the perimeter of the site and be kept in good repair for the duration of the work. (b) Any existing accumulation of dust (e.g. in ceiling voids and wall cavities) must be removed using an industrial vacuum cleaner fitted with a high efficiency particulate air (HEPA) filter. (c) All dusty surfaces and activities must be wet down and any dust created must be suppressed by means of a fine water spray. Water used for dust suppression must not be allowed to enter the street or stormwater system. Activities could include, but are not limited to, rock-breaking, excavation,…

85. Dust Control The following measures must be taken to control the emission of dust: (a) Dust screens must be erected around the perimeter of the site and be kept in good repair for the duration of the work. (b) Any existing accumulation of dust (e.g. in ceiling voids and wall cavities) must be removed using an industrial vacuum cleaner fitted with a high efficiency particulate air (HEPA) filter. (c) All dusty surfaces and activities must be wet down and any dust created must be suppressed by means of a fine water spray. Water used for dust suppression must not be allowed to enter the street or stormwater system. Activities could include, but are not limited to, rock-breaking, excavation,…

113. Certification of the Basement Pumpout Drainage System Prior to the issue of any Occupation Certificate and upon completion of the pump-out system, the following shall be submitted to the Certifier. (a) A suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify that the as-built pumpout system complies with Part I of Council’s DCP Technical Standard 1, all relevant codes and standards and the approved stormwater management plans. (b) Work-as-executed plans based on the approved pump-out system plans from a registered surveyor to verify that the volume of storage and pump capacity are in accordance with design requirements. Any minor changes or…

81. Certification of the Basement Pumpout Drainage System Prior to the issue of an Occupation Certificate for Stage 1 and Stage 2 and upon completion of the pump-out system, the following shall be submitted to the Certifier. (a) A suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify that the as-built pumpout system complies with Part C5 of Council’s DCP, all relevant codes and standards and the approved stormwater management plans. (b) Work-as-executed plans based on the approved pump-out system plans from a registered surveyor to verify that the volume of storage and pump capacity are in accordance with design requirements. Any minor changes or…

107. Certification of the Basement Pumpout Drainage System Prior to the issue of any Occupation Certificate and upon completion of the pump-out system, the following shall be submitted to the Certifier. (a) A suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify that the as-built pumpout system complies with Part I of Council’s DCP Technical Standard 1, all relevant codes and standards and the approved stormwater management plans. (b) Work-as-executed plans based on the approved pump-out system plans from a registered surveyor to verify that the volume of storage and pump capacity are in accordance with design requirements. Any minor changes or…

117. Certification of the Basement Pumpout Drainage System Prior to the issue of any Occupation Certificate and upon completion of the pump- out system, the following shall be submitted to the Certifier. (a) A suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify that the as-built pumpout system complies with Part I of Council’s DCP Technical Standard 1, all relevant codes and standards and the approved stormwater management plans. (b) Work-as-executed plans based on the approved pump-out system plans from a registered surveyor to verify that the volume of storage and pump capacity are in accordance with design requirements. Any minor changes or…

76. Provide Erosion and Sediment Control Where work involves excavation or stockpiling of raw or loose materials, erosion and sediment control devices shall be provided wholly within the site whilst work is being carried out in order to prevent sediment and silt from site works (including demolition and/or excavation) being conveyed by stormwater into Council’s stormwater system natural watercourses, bushland and neighbouring properties. In this regard, all stormwater discharge from the site shall meet the requirements of the Protection of Reference: DA-2023/256 Page 35 of 59 PPSSNH-433 Environment Operations Act 1997 and the Department of Environment, Climate Change and Water guidelines.…

69. Provide Erosion and Sediment Control Where work involves excavation or stockpiling of raw or loose materials, erosion and sediment control devices shall be provided wholly within the site whilst work is being carried out in order to prevent sediment and silt from site works (including demolition and/or excavation) being conveyed by stormwater into Council’s stormwater system natural watercourses, bushland and neighbouring properties. In this regard, all stormwater discharge from the site shall meet the requirements of the Protection of Environment Operations Act 1997 and the Department of Reference: DA-2024/106 Page 38 of 78 Environment, Climate Change and Water guidelines. The control…

146. Stormwater Drainage Management Upon commencement of the use and in perpetuity, the site shall be operated and maintained to ensure all environmental risks are minimised and managed to prevent pollution of the stormwater system in accordance with the Protection of the Environment Operations Act 1997 and any current Environment Protection Authority (EPA) requirements or guidelines. Ensure that stormwater drains in or near the property carry clean rainwater only. Any other liquids or solids are considered a pollutant. Do not allow any wash water, food stuffs, grease, litter or other pollutants from business operations to get into the stormwater drains. Drains must be free of litter,…

159. Stormwater Drainage Management Upon commencement of the use and in perpetuity, the site shall be operated and maintained to ensure all environmental risks are minimised and managed to prevent pollution of the stormwater system in accordance with the Protection of the Environment Operations Act 1997 and any current Environment Protection Authority (EPA) requirements or guidelines. Ensure that stormwater drains in or near the property carry clean rainwater only. Any other liquids or solids are considered a pollutant. Do not allow any wash water, food stuffs, grease, litter or other pollutants from business operations to get into the stormwater drains. Drains must be free of litter,…

181. Stormwater Drainage Management Upon commencement of the use and in perpetuity, the site shall be operated and maintained to ensure all environmental risks are minimised and managed to prevent pollution of the stormwater system in accordance with the Protection of the Environment Operations Act 1997 and any current Environment Protection Authority (EPA) requirements or guidelines. Ensure that stormwater drains in or near the property carry clean rainwater only. Any other liquids or solids are considered a pollutant. Do not allow any wash water, food stuffs, grease, litter or other pollutants from business operations to get into the stormwater drains. Drains must be free of litter,…

69. Provide Erosion and Sediment Control Where work involves excavation or stockpiling of raw or loose materials, erosion and sediment control devices shall be provided wholly within the site whilst work is being carried out in order to prevent sediment and silt from site works (including demolition and/or excavation) being conveyed by stormwater into Council’s stormwater system natural watercourses, bushland and neighbouring properties. In this regard, all stormwater discharge from the site shall meet the requirements of the Protection of Environment Operations Act 1997 and the Department of Environment, Climate Change and Water guidelines. The control devices are to be maintained in a…

71. Provide Erosion and Sediment Control Where work involves excavation or stockpiling of raw or loose materials, erosion and sediment control devices shall be provided wholly within the site whilst work is being carried out in order to prevent sediment and silt from site works (including demolition and/or excavation) being conveyed by stormwater into Council’s stormwater system natural watercourses, bushland and neighbouring properties. In this regard, all stormwater discharge from the site shall meet the requirements of the Protection of Environment Operations Act 1997 and the Department of Environment, Climate Change and Water guidelines. The control devices are to be maintained in a…

43. Provide Erosion and Sediment Control Where work involves excavation or stockpiling of raw or loose materials, erosion and sediment control devices shall be provided wholly within the site whilst work is being carried out in order to prevent sediment and silt from site works (including demolition and/or excavation) being conveyed by stormwater into Council’s stormwater system natural watercourses, bushland and neighbouring properties. In this regard, all stormwater discharge from the site shall meet the requirements of the Protection of Environment Operations Act 1997 and the Department of Environment, Climate Change and Water guidelines. The control devices are to be maintained in a…

113. Positive Covenant – Access to OSD tanks For all access grates / covers to OSD tanks that are not located in common property and are located in private open space, a positive covenant is to be provided on the Strata and Subdivision Plans to allow access at all times to the access points by the Body Corporate and Council for inspection and maintenance of the OSD tank, including emergency access. (Reason: Ensure access to tank for maintenance) ONGOING CONDITIONS THAT MUST BE COMPLIED WITH AT ALL TIMES The following conditions have been applied to ensure that the use of the land and/or building is carried out in such a manner that is consistent with the aims and objectives of the planning…

22. Stormwater Conveyed to Street Drainage Stormwater runoff from the site shall be collected and conveyed to the street drainage system in accordance with Council’s specifications. A grated drainage pit of minimum 600mm x 600mm shall be provided within the property and adjacent to the boundary prior to discharging to the Council’s drainage system. All drainage works shall comply with the requirements described in Part I of Council’s DCP, Technical Standards and AS 3500.3. In this regard, full design and construction Reference: DA-2024/106 Page 19 of 78 details showing the method of disposal of surface and roof water from the site shall be shown on the Construction Certificate plans.…

82. Works-As-Executed Plans - OSD Prior to the issue of an Occupation Certificate for Stage 1 and Stage 2 works and upon completion of the OSD System, the following shall be submitted to the Certifier: (a) Work-as-Executed plans based on the approved stormwater management plans from a registered surveyor to verify that the volume of storage, PSD, water and floor levels are constructed in accordance with design requirements. Any minor changes or variations to the approved plans should be highlighted in red on the approved stormwater plans. (b) Engineer’s certification of the OSD system together with the completed Council’s standard form for On-Site Detention Record of Installation. (Reason:…

88. Inspection of Drainage Connection to Council’s Drainage Line The connection of the site stormwater drainage system to the existing Council pit shall be inspected by Council's Engineer when the pipes are exposed, prior to backfill, and it is possible to confirm that the connection complies with Council's requirements and the new connection pipe does not protrude into the Council pit. The inspection must be booked via Council’s website with Council's Engineer and a minimum of 2 working days’ notice provided. For the purpose of inspections carried out by Council Engineer, the corresponding fees set out in Council’s current Fees and Charges Schedule are payable to Council. (Reason: Ensure…

116. Documentary Evidence of Positive Covenant, Engineers Certificate Reference: DA-2023/256 Page 46 of 59 PPSSNH-433 Prior to the issue of any Occupation Certificate, the following documentary evidence of the completed drainage works shall be submitted to Certifier and Council: - (a) Registered Positive Covenant and Restriction on the Use of Land by way of the Title Deed. (b) Certification from a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) for the as-built OSD system. (c) Work-as-Executed plans highlighting in red any variations based on the approved stormwater management plans from a registered surveyor for the as- built OSD system. (Reason: Public…

104. Sign for On-site Stormwater Detention System Prior to the issue of any Occupation Certificate pertaining to any works requiring an On-Site Detention System (OSD), an aluminium plaque measuring no less than 400mm x 200mm is to be permanently attached and displayed within the immediate vicinity of the OSD tank or basin. The wording for the plaque shall state “This is the on-site stormwater detention system required by Willoughby City Council. It is an offence to alter any part of the system without written consent from Council. The registered proprietor shall keep the system in good working order by regular maintenance including removal of debris”. (Reason: Prevent unlawful alteration)

110. Sign for On-site Stormwater Detention System Prior to the issue of any Occupation Certificate pertaining to any works requiring an On-Site Detention System (OSD), an aluminium plaque measuring no less than 400mm x 200mm is to be permanently attached and displayed within the immediate vicinity of the OSD tank or basin. The wording for the plaque shall state “This is the on-site stormwater detention system required by Willoughby City Council. It is an offence to alter any part of the system without written consent from Council. The registered proprietor shall keep the system in good working order by regular maintenance including removal of debris”. (Reason: Prevent unlawful alteration)

106. Sign for On-site Stormwater Detention System Prior to the issue of any Occupation Certificate pertaining to any works requiring an On-Site Detention System (OSD), an aluminium plaque measuring no less than 400mm x 200mm is to be permanently attached and displayed within the immediate vicinity of the OSD tank or basin. The wording for the plaque shall state “This is the on-site stormwater detention system required by Willoughby City Council. It is an offence to alter any part of the system without written consent from Council. The registered proprietor shall keep the system in good working order by regular maintenance including removal of debris”. (Reason: Prevent unlawful alteration)

114. Sign for On-site Stormwater Detention System Prior to the issue of any Occupation Certificate pertaining to any works requiring an On-Site Detention System (OSD), an aluminium plaque measuring no less than 400mm x 200mm is to be permanently attached and displayed within the immediate vicinity of the OSD tank or basin. The wording for the plaque shall state “This is the on-site stormwater detention system required by Willoughby City Council. It is an offence to alter any part of the system without written consent from Council. The registered proprietor shall keep the system in good working order by regular maintenance including removal of debris”. (Reason: Prevent unlawful alteration)

27. Stormwater Conveyed to Street Drainage Stormwater runoff from the site shall be collected and conveyed to the street drainage system in accordance with Council’s and TfNSW’s specifications. A grated drainage pit of minimum 600mm x 600mm shall be provided within the property and adjacent to the boundary prior to discharging to the street drainage system. All drainage works shall comply with the requirements described in Part I of Council’s DCP, Technical Standards and AS 3500.3. In this regard, full design and construction details showing the method of disposal of surface and roof water from the site shall be shown on the Construction Certificate plans. (Reason: Stormwater control)

108. Works-As-Executed Plans - OSD Prior to the issue of any Occupation Certificate and upon completion of the OSD System, the following shall be submitted to the Certifier: (a) Work-as-Executed plans based on the approved stormwater management plans from a registered surveyor to verify that the volume of storage, PSD, water and floor levels are constructed in accordance with design requirements. Any minor changes or variations to the approved plans should be highlighted in red on the approved stormwater plans. (b) Engineer’s certification of the OSD system together with the completed Council’s standard form for On-Site Detention Record of Installation. (Reason: Record of works)

114. Works-As-Executed Plans - OSD Prior to the issue of any Occupation Certificate and upon completion of the OSD System, the following shall be submitted to the Certifier: (a) Work-as-Executed plans based on the approved stormwater management plans from a registered surveyor to verify that the volume of storage, PSD, water and floor levels are constructed in accordance with design requirements. Any minor changes or variations to the approved plans should be highlighted in red on the approved stormwater plans. (b) Engineer’s certification of the OSD system together with the completed Council’s standard form for On-Site Detention Record of Installation. (Reason: Record of works)

109. Works-As-Executed Plans - OSD Prior to the issue of any Occupation Certificate and upon completion of the OSD System, the following shall be submitted to the Certifier: (a) Work-as-Executed plans based on the approved stormwater management plans from a registered surveyor to verify that the volume of storage, PSD, water and floor levels are constructed in accordance with design requirements. Any minor changes or variations to the approved plans should be highlighted in red on the approved stormwater plans. (b) Engineer’s certification of the OSD system together with the completed Council’s standard form for On-Site Detention Record of Installation. (Reason: Record of works)

118. Works-As-Executed Plans – OSD Prior to the issue of any Occupation Certificate and upon completion of the OSD System, the following shall be submitted to the Certifier: (a) Work-as-Executed plans based on the approved stormwater management plans from a registered surveyor to verify that the volume of storage, PSD, water and floor levels are constructed in accordance with design requirements. Any minor changes or variations to the approved plans should be highlighted in red on the approved stormwater plans. (b) Engineer’s certification of the OSD system together with the completed Council’s standard form for On-Site Detention Record of Installation. (Reason: Record of works)

10. Stormwater Conveyed to Street Drainage Stormwater runoff from the site shall be collected and conveyed to the street drainage system in accordance with Council’s specifications. A grated drainage pit of minimum 600mm x 600mm provided within the property and adjacent to the boundary prior to discharging to the Council’s drainage system. All drainage works shall comply with the requirements described in Part I of Council’s DCP, Technical Standards and AS 3500.3. In this regard, full design and construction details showing the method of disposal of surface and roof water from the site shall be shown on the Construction Certificate plans. (Reason: Stormwater control)

110. Documentary Evidence of Positive Covenant, Engineers Certificate Prior to the issue of any Occupation Certificate, the following documentary evidence of the completed drainage works shall be submitted to Certifier and Council: - (a) Registered Positive Covenant and Restriction on the Use of Land by way of the Title Deed. (b) Certification from a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) for the as-built OSD system. (c) Work-as-Executed plans highlighting in red any variations based on the approved stormwater management plans from a registered surveyor for the as-built OSD system. (Reason: Public record)

120. Documentary Evidence of Positive Covenant, Engineers Certificate Prior to the issue of any Occupation Certificate, the following documentary evidence of the completed drainage works shall be submitted to Certifier and Council: - (a) Registered Positive Covenant and Restriction on the Use of Land by way of the Title Deed. (b) Certification from a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) for the as-built OSD system. (c) Work-as-Executed plans highlighting in red any variations based on the approved stormwater management plans from a registered surveyor for the as- built OSD system. (Reason: Public record)

78. Sign for OSD System Prior to the issue of any Occupation Certificate pertaining to any works requiring an On-Site Detention System, an aluminium plaque measuring no less than 400mm x 200mm is to be permanently attached and displayed within the immediate vicinity of the OSD Tank/s. The wording for the plaque shall state “This is the on-site stormwater detention system required by Willoughby City Council. It is an offence to alter any part of the system without written consent from Council. The registered proprietor shall keep the system in good working order by regular maintenance including removal of debris”. (Reason: Prevent unlawful alteration)

116. Documentary Evidence of Positive Covenant, Engineers Certificate Prior to the issue of any Occupation Certificate, the following documentary evidence of the completed drainage works shall be submitted to Certifier and Council: - (a) Registered Positive Covenant and Restriction on the Use of Land by way of the Title Deed. (b) Certification from a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) for the as-built OSD system. (c) Work-as-Executed plans highlighting in red any variations based on the approved stormwater management plans from a registered surveyor for the as-built OSD system. (Reason: Public record)

112. Documentary Evidence of Positive Covenant, Engineers Certificate Prior to the issue of any Occupation Certificate, the following documentary evidence of the completed drainage works shall be submitted to Certifier and Council: - (a) Registered Positive Covenant and Restriction on the Use of Land by way of the Title Deed. (b) Certification from a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) for the as-built OSD system. (c) Work-as-Executed plans highlighting in red any variations based on the approved stormwater management plans from a registered surveyor for the as-built OSD system. (Reason: Public record)

84. Documentary Evidence of Positive Covenant, Engineers Certificate Prior to the issue of any Occupation Certificate, the following documentary evidence of the completed drainage works shall be submitted to Certifier and Council: - (a) Registered Positive Covenant and Restriction on the Use of Land by way of the Title Deed. (b) Certification from a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) for the as-built OSD system. (c) Work-as-Executed plans highlighting in red any variations based on the approved stormwater management plans from a registered surveyor for the as-built OSD system. (Reason: Public record)

79. Inspection of Drainage Connection to Council’s Drainage Line The connection of the site stormwater drainage system to the existing Council pit shall be inspected by Council's Engineer when the pipes are exposed, prior to backfill, and it is possible to confirm that the connection complies with Council's requirements. The inspection must be booked via Council’s website with Council's Engineer and a minimum of 2 working days’ notice provided. For the purpose of inspections carried out by Council Engineer, the corresponding fees set out in Council’s current Fees and Charges Schedule are payable to Council. (Reason: Ensure compliance)

84. Inspection of Drainage Connection to Council’s Drainage Line The connection of the site stormwater drainage system to the existing Council system shall be inspected by Council's Engineer when the pipes are exposed, prior to backfill, and it is possible to confirm that the connection complies with Council's requirements. The inspection must be booked via Council’s website with Council's Engineer and a minimum of 48hours notice provided. For the purpose of inspections carried out by Council Engineer, the corresponding fees set out in Council’s current Fees and Charges Schedule are payable to Council. (Reason: Ensure compliance)

64. Inspection of Drainage Connection to Council’s Drainage Line The connection of the site stormwater drainage system to the Council drainage system shall be inspected by Council's Engineer when the pipes are exposed, prior to backfill, and it is possible to confirm that the connection complies with Council's requirements. The inspection must be booked via telephone with Council's Engineer and a minimum of 48hours notice provided. For the purpose of inspections carried out by Council Engineer, the corresponding fees set out in Council’s current Fees and Charges Schedule are payable to Council. (Reason: Ensure compliance)

116. Certification of OSD Prior to the issue of any Occupation Certificate, a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify on Council’s standard certification form that the as-built OSD system is in accordance with the approved plans and complies with Council’s DCP and Technical Standards. Council’s standard certification form is available in Appendix 2 of Council’s Technical Standard No. 1. (Reason: Legal requirement) Reference: DA-2024/106 Page 51 of 78

80. Certification of OSD Prior to the issue of an Occupation Certificate for Stage 1 and Stage 2 works, a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify on Council’s standard certification form that the as-built OSD system is in accordance with the approved plans and complies with Council’s DCP and Technical Standards. Council’s standard certification form is available in the appendix of Council’s Technical Standard No. 1. (Reason: Legal requirement)

154. Stormwater Kerb Outlet New stormwater connection outlets at the street kerb shall be made using 125mm wide x 75mm high x 4mm thick hot dip galvanised Rectangular Hollow Section (RHS). Where there are multiple outlets required, a minimum distance of 100mm shall separate these outlets. A grated drainage pit (min. 450mm x 450mm) shall be provided within and adjacent to the property boundary prior to discharging to the Council’s drainage system. (Reason: Protection of public asset)

112. Grated Box Drain Prior to the issue of any Occupation Certificate, a minimum 200mm wide grated trench drain with a heavy duty removable galvanised grate is to be provided within the property along the front boundary to collect driveway runoff. The trench drain shall be connected to the main drainage system and must have an outlet of minimum diameter 150mm to prevent blockage by silt and debris. (Reason: Proper disposal of stormwater) Reference: DA-2024/106 Page 50 of 78

106. Certification of OSD Prior to the issue of any Occupation Certificate, a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify on Council’s standard certification form that the as-built OSD system is in accordance with the approved plans and complies with Council’s DCP and Technical Standards. Council’s standard certification form is available in Appendix 2 of Council’s Technical Standard No. 1. (Reason: Legal requirement)

112. Certification of OSD Prior to the issue of any Occupation Certificate, a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify on Council’s standard certification form that the as-built OSD system is in accordance with the approved plans and complies with Council’s DCP and Technical Standards. Council’s standard certification form is available in Appendix 2 of Council’s Technical Standard No. 1. (Reason: Legal requirement)

108. Certification of OSD Prior to the issue of any Occupation Certificate, a suitably qualified and experienced civil engineer (generally CP Eng. Qualification) shall certify on Council’s standard certification form that the as-built OSD system is in accordance with the approved plans and complies with Council’s DCP and Technical Standards. Council’s standard certification form is available in Appendix 2 of Council’s Technical Standard No. 1. (Reason: Legal requirement)

129. Stormwater Maintenance Plan Prior to the issue of an Occupation Certificate, submit to the certifying authority approval a Maintenance Plan for the stormwater management system. The plan is to Reference: DA-2023/256 Page 50 of 59 PPSSNH-433 be in accordance with recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure operation of system complies)

148. Stormwater Treatment System – Ongoing Maintenance The registered proprietor of the land shall take full responsibility for the ongoing maintenance of the Stormwater Treatment System constructed on the land. The maintenance of the system is to be undertaken in accordance with the recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure compliance)

147. Stormwater Treatment System – Ongoing Maintenance The registered proprietor of the land shall take full responsibility for the ongoing maintenance of the Stormwater Treatment System constructed on the land. The maintenance of the system is to be undertaken in accordance with the recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure compliance)

155. Stormwater Treatment System – Ongoing Maintenance The registered proprietor of the land shall take full responsibility for the ongoing maintenance of the Stormwater Treatment System constructed on the land. The maintenance of the system is to be undertaken in accordance with the recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure compliance)

157. Stormwater Treatment System – Ongoing Maintenance The registered proprietor of the land shall take full responsibility for the ongoing maintenance of the Stormwater Treatment System constructed on the land. The maintenance of the system is to be undertaken in accordance with the recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure compliance)

163. Stormwater Treatment System – Ongoing Maintenance The registered proprietor of the land shall take full responsibility for the ongoing maintenance of the Stormwater Treatment System constructed on the land. The maintenance of the system is to be undertaken in accordance with the recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure compliance)

122. Stormwater Treatment System – Ongoing Maintenance The registered proprietor of the land shall take full responsibility for the ongoing maintenance of the Stormwater Treatment System constructed on the land. The maintenance of the system is to be undertaken in accordance with the recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure compliance)

111. Documentary Evidence of Registered Positive Covenant and Restriction on the Use of Land Prior to issue of the Subdivision Certificate, the following documentary evidence of the completed on-site detention (OSD) system as required by this DA shall be submitted to Council:- (a) Title Deed of the as-built OSD systems. Alternatively, the applicant shall create a Positive Covenant and Restriction on the use of Land with this application. (Reason: Public record)

100. Stormwater Maintenance Plan Prior to the issue of an Occupation Certificate for Stage 1 and 2 works, submit to the certifying authority approval a Maintenance Plan for the stormwater management system. The plan is to be in accordance with recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure operation of system complies)

34. OSD/Rainwater Tank Design The design of all rainwater/OSD tanks shall comply with the requirements of the NSW Work Health and Safety Regulation 2017, to minimise risks associated with confined spaces. The design shall also consider “Safety in Design” requirements. Prior to issue of a Construction Certificate, a suitably qualified person shall certify that the design meets these requirements. (Reason: Safe access to tanks)

19. OSD/Rainwater Tank Design The design of all rainwater/OSD tanks shall comply with the requirements of the NSW Work Health and Safety Regulation 2017, to minimise risks associated with confined spaces. The design shall also consider “Safety in Design” requirements. Prior to issue of a Construction Certificate, a suitably qualified person shall certify that the design meets these requirements. (Reason: Safe access to tanks)

36. OSD/Rainwater Tank Design The design of all rainwater/OSD tanks shall comply with the requirements of the NSW Work Health and Safety Regulation 2017, to minimise risks associated with confined spaces. The design shall also consider “Safety in Design” requirements. Prior to issue of a Construction Certificate, a suitably qualified person shall certify that the design meets these requirements. (Reason: Safe access to tanks)

29. OSD/Rainwater Tank Design The design of all rainwater/OSD tanks shall comply with the requirements of the NSW Work Health and Safety Regulation 2017, to minimise risks associated with confined spaces. The design shall also consider “Safety in Design” requirements. Prior to issue of a Construction Certificate, a suitably qualified person shall certify that the design meets these requirements. (Reason: Safe access to tanks)

21. OSD/Rainwater Tank Design The design of all rainwater/OSD tanks shall comply with the requirements of the NSW Work Health and Safety Regulation 2017, to minimise risks associated with confined spaces. The design shall also consider “Safety in Design” requirements. Prior to issue of a Construction Certificate, a suitably qualified person shall certify that the design meets these requirements. (Reason: Safe access to tanks)

123. Stormwater Maintenance Plan Prior to the issue of an Occupation Certificate, submit to the certifying authority approval a Maintenance Plan for the stormwater management system. The plan is to be in accordance with recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure operation of system complies)

129. Stormwater Maintenance Plan Prior to the issue of an Occupation Certificate, submit to the certifying authority approval a Maintenance Plan for the stormwater management system. The plan is to be in accordance with recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure operation of system complies)

125. Stormwater Maintenance Plan Prior to the issue of an Occupation Certificate, submit to the certifying authority approval a Maintenance Plan for the stormwater management system. The plan is to be in accordance with recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure operation of system complies)

131. Stormwater Maintenance Plan Prior to the issue of an Occupation Certificate, submit to the certifying authority approval a Maintenance Plan for the stormwater management system. The plan is to be in accordance with recommendations of “Guidelines for the Maintenance of Stormwater Treatment Measures” published by Stormwater NSW or other relevant guidelines or publications. (Reason: Ensure operation of system complies)

105. Confined Space Sign Prior to the issue of any Occupation Certificate, securely install standard confined space danger signs in a prominent location within the immediate vicinity of access points to on site stormwater detention systems, rainwater tanks and confined spaces in accordance with the requirements of NSW Work Health and Safety Regulation 2017. (Reason: Safe access to tank)

111. Confined Space Sign Prior to the issue of any Occupation Certificate, securely install standard confined space danger signs in a prominent location within the immediate vicinity of access points to on site stormwater detention systems, rainwater tanks and confined spaces in accordance with the requirements of NSW Work Health and Safety Regulation 2017. (Reason: Safe access to tank)

107. Confined Space Sign Prior to the issue of any Occupation Certificate, securely install standard confined space danger signs in a prominent location within the immediate vicinity of access points to on site stormwater detention systems, rainwater tanks and confined spaces in accordance with the requirements of NSW Work Health and Safety Regulation 2017. (Reason: Safe access to tank)

115. Confined Space Sign Prior to the issue of any Occupation Certificate, securely install standard confined space danger signs in a prominent location within the immediate vicinity of access points to on site stormwater detention systems, rainwater tanks and confined spaces in accordance with the requirements of NSW Work Health and Safety Regulation 2017. (Reason: Safe access to tank)

79. Confined Space Sign Prior to the issue of any Occupation Certificate, securely install standard confined space danger signs in a prominent location within the immediate vicinity of access points to on site stormwater detention systems, rainwater tanks and confined spaces in accordance with the requirements of NSW Work Health and Safety Regulation 2017. (Reason: Safe access to tank)

165. Location of On-Site Detention System The locations of the as-built on-site stormwater detention system(s) shall be shown on the final plan of subdivision/strata plan. Access to the system, including access points to any underground tank, shall be located in common areas. (Reason: Ensure compliance)

57. Excess or Waste Concrete Excess or waste concrete from mobile concrete agitators or concrete pumping equipment shall not be washed down, spilled or disposed of onto the road reserve, Council's stormwater system, road, pavement, reserves or Council land. (Reason: Environmental protection)

143. Location of On-Site Detention System The locations of the as-built on-site stormwater detention system(s) shall be shown on any subdivision/strata plan. Access to the system, including access points to any underground tank, shall be located in common areas. (Reason: Ensure compliance)

104. Construct Street Stormwater Drainage Prior to the issue of an Occupation Certificate for Stage 1 and Stage 2, construct a new stormwater drainage system on the northern side of Walter Street in accordance with the approved Section 138 drawings. (Reason: Stormwater management)

110. Location of On-Site Detention System The locations of the as-built on-site stormwater detention system(s) shall be shown on the final plan of subdivision/strata plan. (Reason: Ensure compliance)

146. Analysis of Outlet Condition All storage outlet pipes from the OSD tank shall be above the 1% Annual Exceedance Probability (AEP) event water level. (Reason: Maintain designed discharge)