187440-GEO-Site Classification Report[A] (1)

4.0        Site Investigations_______________________________________________________
Fieldwork for the above project was carried out on 9/5/2022 and comprised the drilling of THREE (3) boreholes to a
maximum depth of 2.5m (or prior refusal). Boreholes were advanced using a Mechanical Auger(s).

Dynamic Cone (DCP) and / or Pocket Penetrometer (PP) tests were also carried out at each borehole location to assess
soil strength variation with depth (see BH logs for test details).
The available Geological Survey Maps showed the site to be underlain by Quaternary aged Alluvial Deposits. The
subsurface profile encountered in the boreholes is considered to be consistent with the geological map indications.

           4.1   Soil Investigation Summary___________________________________________________________

 Soil Classification Summary                          Commentary

 Soil Classification                       M          In the range of 20mm to 40mm.



 P* Classification                        Yes         due to abnormal moisture conditions – trees and recently
                                                      removed trees on site and trees on adjacent sites

 FILL identified in BH Logs               No          AS2870 - 2011 - Clause 2.5.3(b(ii))

 Calculated Ys Value (mm)               30mm

 Calculated Yt Value (mm)               28mm

 Site Classification                     “P” M


           4.2   Laboratory Test Results________________________________________________________________
To obtain a correlated estimate of the characteristic soil surface movement (Ys) based on soil reactivity level, a sample
was collected from within a representative clay layer for further testing.



     BH                Depth (m)                                           Liquid Limit          Linear         Estimated
   Location                                                                                    Shrinkage       Shrink Swell
                                                                                                                Index (Iss)

       3                 0.3-0.6                                                37%              11.2%               2.8



           4.3   Geology & Climate Zone_______________________________________________________________
A desktop review of Geological maps and / or online digital geological imagery has been carried out to determine sites
underlying geology and climate zone. Table 3 below provides results from this desktop study.

Base Geology:                                      Quaternary aged Alluvial Deposits

Climate Zone:                                      Zone 1




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