Environmental Report (onsite effluent disposal) · MCU13/0064

             has the peak design capacity of up to 2,700L/day (14 EP). This is considered to
             be satisfactory. Refer Photo Plate 1 contained in Attachment 1 of this
             correspondence showing 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. Refer Photo Plate 2 contained in Attachment
             1 of this correspondence showing 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
             two (22) guests, located in a series of free standing buildings. In addition to the
             guest accommodation facilities, a total of two (2) staff members are
             accommodated within the caretaker’s residence.

             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:

             Table 1: Calculated Hydraulic Wastewater Flows from DEHP (formerly DNR&M)

                                                                         Daily Sewage
                                                        Rooms per                         Total Daily Sewage    Adopted Total
             Item           Source        Quantity                      Flow per Room
                                                         Structure                           Flow (L/day)        Flow (L/day)
                                                                            (L/day)

                  1       Bungalow(s)         3              2             300 – 6001         900 – 1 800            1,350

                  2       Long House          1              4             225 – 4502         900 – 1 800            900

                  3        Boat Shed          1              1             225 – 4502          225 – 450             225

                          Caretaker’s
                  4                           1              1             225 – 4502          225 – 450             225
                           Residence

                                                                                                Total (L/day)        2,700

                                                                 Total Site equivalent persons (EP) @ 200L/EP         14
             Note: 1Flow per person based on two (2) bedroom Apartment/Home Unit with reticulated water supply
                      2Flow per person based on one (1) bedroom Apartment/Home Unit with reticulated water supply



             Based on the above references, a total hydraulic loading of 2,700 litres per day
             (14EP) can be estimated for the guest and staff accommodation facilities at the
             Makepeace Island facility.


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