Slope Stability Report (rec. 16.04.25) · MCU25/0042

  Australian Soil Investigations              LOG SECTIONS         Ref No. 250131
  Client:         M. Bennett
  Location:       (Lot 10 on RP89506) 19 Attunga Heights, Noosa Heads
  Date:           25/03/2025
                                    (House Site)
Depth         TEST SITE No 1           P    Depth          TEST SITE No 2         P
 100           Fill Silty Sand (SM)                1    100           Fill Silty Sand (SM)             1
 200       Fine to coarse grained dark             1    200       Fine to coarse grained dark          1
 300         grey, roots, moist, loose             1    300         grey, roots, moist, loose          1
 400                                               1    400              Silty Sand (SM)               1
 500             Silty Sand (SM)                   1    500       Fine to coarse grained, grey,        1
 600      Fine to coarse grained, grey,            1    600            roots, moist, loose             1
 700           roots, moist, loose                 1    700                                            1
 800                                               1    800                                            1
 900                                               2    900                                            2
1000                                               2   1000                                            2
1100                                               2   1100             Silty Sand (SM)                3
1200                                               2   1200       Fine to coarse grained, pale         3
1300            Silty Sand (SM)                    2   1300      grey, moist, becoming medium          2
1400      Fine to coarse grained, pale             2   1400                   dense                    3
1500     grey, moist, becoming medium              3   1500                                            3
1600                  dense                        3   1600                                            4
1700                                               4   1700                                            4
1800                                               4   1800                                            5
1900                                               4   1900                                            5
2000                                               4   2000                     End                    5
2100                                               4   2100                                            6
2200                                               5   2200                                            5
2300                                               5   2300                                            6
2400                                               5   2400                                            6
2500                                               6   2500                                            6
2600                                               6   2600                                            7
2700                                               7   2700                                            6
2800                                               7   2800                                            7
2900                                               6   2900                                            7
3000                    End                        7   3000                                            7
3100                                               7   3100
3200                                               7   3200



   Depth = mm below ground level.
   P = blows per 100mm penetration with an approved 9kg penetrometer.
   Notation such as (SP) refers to the soil description to Table A1 AS1726 ‘Guide to the description
   identification and classification of soils’.
   Solid lines represent sharp interface between different soil types. Dotted lines represent
   gradation form one soil type to another.
   Abbreviations used
   UTP - unable to penetrate, Bec. – becoming, N.S.L. – Natural Surface Level
   Med. – medium, MW - Moderately weathered
   EW - extremely weathered, Plast. - Plasticity
   No recovery means unable to extract samples from the base of the bore hole because the soil
   will not bind in the auger head.
   The colour of the soil is often abbreviated, for example Gy = grey Or = orange.