Appendix E - Wastewater Report

                                            PROPOSED RESIDENTIAL SUBDIVISION
                                            9A JIRRIMA CRESCENT, COOROIBAH



Table of Contents

1.0   INTRODUCTION ........................................................................................................................................................ 1

2.0   SITE DESCRIPTION .................................................................................................................................................. 1

3.0   PROPOSED DEVELOPMENT ................................................................................................................................... 2

4.0   EXISTING WASTEWATER INFRASTRUCTURE ..................................................................................................... 3

5.0   AIMS & METHOD OF INVESTIGATION ................................................................................................................... 4

6.0   SUBSURFACE INVESTIGATION FINDINGS ........................................................................................................... 5

      6.1         Regional Geology ......................................................................................................................................... 5

      6.2         Subsurface Conditions.................................................................................................................................. 5

7.0   WASTEWATER TREATMENT AND DISPOSAL ...................................................................................................... 6

      7.1         Wastewater Flow Design Allowance ............................................................................................................. 6

      7.2         Terrain-Soil Assessment............................................................................................................................... 6

      7.3         Recommendations ........................................................................................................................................ 7

      7.3.1            System Type ........................................................................................................................................... 7

      7.3.2            System Positioning.................................................................................................................................. 7

      7.3.3            System Construction ............................................................................................................................... 9

      7.3.4            Maintenance and Inspection ................................................................................................................... 9

8.0   LIMITATIONS ............................................................................................................................................................ 9




4 November 2020
Report No. 20333-001-Rev0                                                            iii