Reference Document - OPW23 0189

 Project No. PG-10899                                                                                                        Page | 4
 November 2023
 Ref: PG-10899, 2023-10-16, ASR VER 3
 DD Sunnyside CD Sunnyside Pty Ltd – Acid Sulfate Soil Investigation - Proposed Residence, 30 Mossman Court, Noosa Heads




4.0 GEOLOGICAL MODEL

The subsurface profile encountered in borehole BH01 generally consisted of a surficial
concrete layer associated with the driveway, overlying very loose to loose sand fill to
a depth of 2.3m, overlying natural sands that were generally medium dense to dense,
becoming indurated at a depth of 6.6m, and continued to the termination of
borehole BH01 of 9.0m.

In HA02, loose silty sand fill was encountered to a depth of 0.6m, overlying loose sand
fill to the termination depth of 1.0m.

Table 1. presents a summary of the encountered subsurface profile. Detailed borehole
record sheets are appended to this report.

TABLE 1                           SUBSURFACE PROFILE SUMMARY

                                                          NATURAL
                                                            SAND
 BH No.                FILL                                                                                                BH TD
                                                                 Dense to Very Dense
                                        Medium Dense to Dense
                                                                     (Indurated)
   BH01              0.0-2.3                   2.3-6.6                  6.6-TD                                              9.0
   BH02              0.0-TD                      NE                       NE                                                1.0

Notes:
1. All depths in metres below ground level at time of investigation.
2. NE - Not Encountered; TD - Termination Depth.

5.0 GROUNDWATER

Groundwater was noted in borehole BH01 at a depth of 2.8m at the time of drilling.
Water levels can be expected to similar to the tidal levels of the neighbouring canal
and may vary with seasonal and climatic conditions.