Attach G- Engineering Report

                                                    3 Garnet Street Cooroy, QLD 4563
                                                     State Planning Policy December 2014 - Healthy Waters (DERM)
                                                        Performance Outcome Criteria and Acceptable Outcomes


                   Performance outcomes                                        Acceptable outcomes                                                   Solution
     ecosystem health.                                         intensity of coastal algal blooms, and
                                                               AO9.2
                                                               Development in coastal catchments avoids or minimises
                                                               and appropriately manages soil disturbance or altering
                                                               natural hydrology, and
                                                               AO9.3
                                                               Development in coastal catchments:
                                                               a. avoids lowering groundwater levels where potential or
                                                               actual acid sulfate soils are present, and
                                                               b. manages wastewaters so that
                                                               (i) the pH of any wastewater discharged is    maintained
                                                               between 6.5 and 8.5 to avoid mobilisation of acid, iron,
                                                               aluminium, and metals, and
                                                               (ii) holding times of neutralised wastewaters ensures the
                                                               flocculation and removal of any dissolved iron prior to
                                                               release, and
                                                               (iii) visible iron floc is not present in any discharge, and
                                                               (iv) precipitated iron floc is contained and disposed of,
                                                               and
                                                               (v) wastewater and precipitates that cannot be contained
                                                               and treated for discharge on site are removed and
                                                               disposed of through tradewaste or another lawful
                                                               method.

10   P10                                                       A10.1                                                          S10.1
     Any non-tidal artificial waterway is managed and          Any non-tidal artificial waterway is designed, constructed     Not applicable as a waterway is not proposed for this
     operated by suitably qualified persons to achieve water   and managed under the responsibility of a suitably             development.
     quality objectives in natural waterways.                  qualified registered professional engineer, Queensland
                                                               (RPEQ) with specific experience in establishing and
                                                               managing artificial waterways, and