1-22276-01 site plan

Project No. 1-22276                                                                                                                    Page | 12
February, 2020
Ref: 1-22276, 2020-02-28, BR VER 2
Wessel Petroleum Pty Ltd – GEOTECHNICAL INVESTIGATION - Proposed Service Station Reconstruction, 52-54 Mary Street and Weyba Road,
Noosaville




TABLE 2                SUMMARY OF THE SUBSURFACE PROFILE
                                                                                                                       Natural
                                                                                                                       CLAYS
                                                                           Natural SANDS (SM/SP)
                                                                                                                        (CL-
                           Pavement
 BH       Concrete Bitumen                                 Fill                                                        CI/CH)        TD     GW
                            Gravel
 No.                                                                                                   dense -
                                                                                       med.                              very
                                                                        loose                           very
                                                                                       dense                             stiff
                                                                                                       dense
            (mm)           (mm)           (mm)             (m)            (m)            (m)             (m)              (m)        (m)     (m)
                                                                                                         3.20-
   1          110            NE             NE          0.11-0.30         NE          0.30-3.20                        4.00-TD       4.50    1.2
                                                                                                         4.00
   2          NE              60            70          0.13-0.50         NE          0.50-2.40        2.40-TD            NE         3.00    1.2

   3          NE              70            180         0.25-0.60         NE          0.60-3.10        3.10-TD            NE         4.00    1.2

                                                                         0.50-
   4          NE             NE             NE           0.0-0.50                     0.80-2.40        2.40-TD            NE         3.00    1.2
                                                                         0.80


                          40 + 90                                                                        2.50-
   5          NE                          90 (2)        0.22-0.60         NE          0.60-2.50                        4.10-TD       4.50    1.2
                            (5)                                                                          4.10

                                                                         0.40-         1.20-TD
   6          NE             NE             NE        0.0-0.40 (7)                                         NE             NE         6.00    1.2
                                                                         1.20             (8)

                                                                                      0.40-2.40
                                                                                                        2.40-
                                                                                      3.50-4.70
   7          160            NE             NE          0.16-0.40         NE                             3.50             NE         6.00    1.2
                                                                                         (9)
                                                                                                       5.50-TD
                                                                                      4.70-5.50

                                                                                      0.60-2.40
                                                                                                         3.50-
   8          150            NE             NE          0.16-0.60         NE           4.30-TD                            NE         6.00    1.7
                                                                                                         4.30
                                                                                          (9)
                                                                                                         2.60-           4.50-
   9          130            NE             NE          0.13-2.60         NE           5.40-TD                                       6.00    1.3
                                                                                                         4.50            5.40
 NOTES
  1. Depth in metres below surface level at date of drilling.
  2. NE = Not Encountered.
  3. TD = Termination Depth.
  4. GW = Depth Groundwater noted
  5. 40mm bitumen layer over 90mm Sandy GRAVEL layer over 90mm bitumen layer (old surface) in
     BH5.
  6. Broken concrete pieces from 0.3m to 0.4m in BH6.
  7. Medium dense to dense Zone from 2.7m – 4.7m in BH6.
  8. Medium dense to dense Zone from 3.5m – 4.7m in BH7.
  9. Sandy Clay (CL-CI) bands within Silty SAND (SM) layer from 4.3m – 4.7m in BH8


    5.2 Groundwater
Groundwater was encountered in all of the open hole drilled borings at the time of the
investigation at depths of between 1.2m and 1.7m (refer Table 2).

It could also be expected to vary with climatic changes (rainfall) and tidal influences.

Groundwater could also be encountered as seepage along and/or trapped waters in and
adjacent to the many service lines, pits, tanks, etc. associated with the existing service station
centre.




                                                                                                            SOIL SURVEYS