Appendix J - Water Supply and Wastewater Servicing Report

Lutheran Services                                                                             Page 14 of 15
PF80 - Cooroy Care Farm
24 May 2018                                                                              Ref. No. 2017.0616




5       WASTEWATER MANAGEMENT
        5.1          Proposed Wastewater System
        The site wastewater systems will include:
        ▪ Gravity collection to a central private sewage pumping station;
        ▪ A direct pumped connection into the existing Unitywater rising main in Rose Gum Road.


        5.2          Wastewater Flows
        Based on the population data in Table 2 the estimated residential wastewater flows are provided
        in Table 11.

Table 11 Estimated Wastewater Flows

 Item                                                     Assumption        Value
 Design EP                                                                  87.5
 Average Dry Weather Flow (ADWF) (kL/day)                 200 L/EP          17.4
 Annual Flow (ML/yr)                                                        6.3
 Peak Dry Weather Flow (kL/day)                           2 x AD            34.7
 Peak Wet Weather Flow (PWWF) (L/s)                       4 x AD            1.00




        5.3          Regulatory Requirements
        All internal wastewater collection and pumping system will require Council plumbing approval.
        The connection to the Unitywater rising main will be provided in accordance with Unitywater’s
        requirements.


        5.4          Connection to Unitywater Rising Main
        Connection to the Unitywater rising main will be completed in accordance with Unitywater
        requirements taking into account:
        ▪ Operating pressures within the rising main;
        ▪ Any pumping constraints imposed by Unitywater;
        ▪ Any specific connection requirements, such as connection type, valving arrangements and
          backflow prevention requirements.