Civil Engineering Onsite Effluent Assessment · MCU13/0064

             In accordance with the original Site and Soil Evaluation Report (ref no. 2771-02)
             completed by FPE on the 20th June 2007, the AWTS is to have a peak design
             capacity of not less than 2,475L/day (13 equivalent persons (EP)). Based on
             information supplied by the existing service agent (H2Gold), the AWTS currently
             has the peak design capacity of up to 2,700L/day (14 EP) and wet weather storage
             capacity of 10,000L. The existing AWTS also has the ability to expand the peak
             design capacity of the system through the modification of the internal pump
             timing. This is considered to be satisfactory. Photo Plate 1 contained in
             Attachment 1 of this correspondence identifies the existing STP.

             Treated effluent is currently irrigated via a subsurface irrigation system within
             two (2) designated effluent disposal areas. The disposal areas were originally
             designed for 495m2 however a total area of 540m2 of raised garden beds was
             installed for conservative purposes. The existing raised garden beds have the
             capacity to handle a daily irrigation rate of 2,700L based on Table M1 of
             AS1547:2012. At the time of the inspection, the effluent disposal areas appeared
             to be in good condition, with consistent ground cover. Photo Plate 2 contained in
             Attachment 1 of this correspondence identifies the existing land application area.


             Wastewater Hydraulic Loading

             In accordance with the proposed change in use, the accommodation facilities
             located at Makepeace Island will have the capacity to cater for a total of twenty
             (20) guests, located in a series of free standing buildings. In addition to the guest
             accommodation facilities, a total of five (5) staff members service the island, not
             including cleaning staff provided by an external company:

                     Two (2) staff members (traditionally Chef and Hostess) are permanently
                      accommodated on-site within the caretaker’s residence.
                     Two (2) staff members (traditionally Skipper and Maintenance) access the
                      island between the hours of 7am to 10pm. However, during high
                      occupancy, the two (2) staff members can also be accommodated onsite.
                     One (1) additional staff member (traditionally General Manager) accesses
                      the island between the hours of 7am to 10pm.
                     Two (2) cleaning staff members are provided by an external company and
                      access the island for a period of approximately six (6) hours to undertake
                      pre and post guest cleaning.

             The hydraulic loading associated with the guest and staff accommodation
             facilities can be most reliably calculated using Chapter 5 Table A of DEHP
             (formerly DNR&M) Planning Guidelines for Water Supply and Sewerage, as
             follows:




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