HSTP Design · MCU26/0104

Introduction

The purpose of this report is to evaluate and design a suitable on-site treatment system
and disposal area in accordance with AS 1547 – 2012, the Queensland Plumbing and
Wastewater Code, The Environmental Protection Act, The Plumbing and Drainage Act and
Local Council requirements. The report relates exclusively to the above site and the
proposed and or existing buildings shown on the plan only. All measurements and levels
shown are as accurate as possible with the information provided these are to be used for
locating the onsite effluent disposal system only.

Site Description
Weather Conditions                                               Showers
Slope                                                             0-12%
Slope Stability                                                    N/a
Vegetation                                            Grassed, scattered mature trees
Flooding                                                         Present
Watercourses                                                      Dams
Site exposure                                                   Sun & wind
Salinity                                                            Nil
Surface condition                                   Nil cracks, seepage, or compaction
Boulders & Rock outcrops                                            Nil
Will water from uphill traverse the area                           Yes
Water table                                                  Not encountered



Soil Category (AS1547-2012 Table M1)

  Boreholes                       0-200mm                      200-600mm
  BH 1, BH2                       Cat 4                        Cat 6
                                  FILL Silty Sand, Grey        FILL Silty Clay, Grey/Brown
  Perc Result: 0.07               Clay Loams                   Medium-heavy clays
                                  Weakly Structured            Moderately structured
                                  0.12-0.5m/d                  <0.06




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