Randwick Flood Management Conditions

50. Stormwater Drainage & Flood Management The site stormwater drainage system is to be provided in accordance with the following requirements; a) The stormwater drainage system must be provided in accordance with the relevant requirements of Building Code of Australia and the conditions of this consent, to the satisfaction of the Principal Certifier and details are to be included in the Stage 2 construction certificate. i. The stormwater must be discharged (by gravity) directly into Council’s underground drainage system located in Sturt Street via a new and/or existing kerb inlet pit; b) Should stormwater be discharged to Council’s street drainage system, an on-site stormwater detention…

45. The site stormwater drainage system is to be provided in accordance with the following requirements; a) The stormwater drainage system must be provided in accordance with the relevant requirements of Building Code of Australia and the conditions of this consent, to the satisfaction of the Crown Certifier and details are to be included in the relevant Crown Certificate. b) The stormwater drainage system must be provided in accordance with the Kensington 2025 Stormwater Master Plan as updated. c) Any infiltration systems must be designed and constructed generally in accordance with the relevant sections of Council’s Private Stormwater Code. Infiltration areas must be a minimum of 3.0…

48. Stormwater Drainage & Flood Management a) The floor level of all retail / commercial areas shall be at or above the critical 1%AEP flood level for the development site. Details demonstrating compliance with this condition are to be included in the Stage 2 construction certificate documentation. b) The floor level of all habitable and storage areas (excluding those in the basement carpark) shall be at a minimum of 500mm above the critical 1%AEP flood level for the development site or be suitably waterproofed up to this same level. All facilities that service the habitable areas (such as lift shafts and services) must also be protected to 500mm above the critical 1%AEP flood level for the…

49. Stormwater Drainage & Flood Management Stormwater drainage plans have not been approved as part of this development consent. Engineering calculations and plans with levels reduced to Australian Height Datum in relation to site drainage shall be prepared by a suitably qualified Hydraulic Engineer and submitted to and approved by the Principal Certifier prior to the Stage 2 construction certificate being issued for the development. A copy of the engineering calculations and plans are to be forwarded to Council, prior to a construction certificate being issued, if the Council is not the Principal Certifier. The drawings and details shall include the following information: a) A detailed…

9. Flooding The floor level within the proposed ‘Bus Toilet’ and ‘All Gender Toilet’, located within the proposed male lavatory building, shall be a minimum RL 6.64m AHD. The walls of the toilet areas must be suitably waterproofed to ensure flood water cannot enter other parts of the amenities building. All materials within the toilet areas must be designed to withstand flood waters up to the critical 1%AEP flood level (RL 6.89m AHD). All services (such as any power outlets) must be above the critical 1%AEP flood level or suitably protected. Plans submitted for the construction certificate shall demonstrate compliance with this requirement. The floor level of all three amenities buildings,…

47. Flood Level / Flood Planning a) Prior to lodging the Stage 2 Construction Certificate, the applicant must submit to Council for approval, and have approved, a detailed flood level assessment for the entire development site. The critical 1%AEP (1 in 100 year) flood levels across the site must be documented. The flood level assessment must be prepared in full consultation with Council’s Development Engineer Coordinator. b) Prior to lodging the Stage 2 Construction Certificate, the applicant must submit to Council for approval, and have approved, a detailed flood study that demonstrates there will be no significant increase in flood levels external to the site as a result of the…