Appendix B - Global Stability Assessment Report

                                                    -2-
                                                                                      Job No: ML21/188
1.0       INTRODUCTION

          1.1 General

This report summarises the results of Level 1 Inspections, field testing and associated compaction
compliance testing of earthworks filling operations carried out to form the foundation for the Proposed
shed, 36 Tunba court, Mount Cooroy (The Site).

Our involvement with the bulk earthworks filling operations at The Site was between 3rd August 2021
and 19th August 2021

The work was commissioned by Mr Geoff Hussin (The Client).

Earthworks were carried out by falcon earthmoving.


          1.2 Previous Earthworks

As far as we have been made aware or what could be determined onsite, no previous earthworks have
been carried out at The Site prior to our involvement.

          1.3 The Project

The site is bounded by rural properties to the north east south and west.


2.0       THE BRIEF

Our Brief from the Client was limited to:

      •   Level 1 Inspection and Testing of the placement and compaction of bulk earthworks fill materials
          in accordance with AS3798-2007 – “Guidelines on Earthworks for Commercial and Residential
          Developments”.

      •   Compaction Control Testing in accordance with AS1289 – Testing of Soils for Engineering
          Purposes and at frequencies defined in AS3798-2007 Table 8.1.


3.0       METHODOLOGY

Earthworks supervision, assessment and testing was carried out on the stripped and exposed ground
surfaces and during the placement and compaction of fill materials forming residential building
platforms.

Field and laboratory testing included a walk over assessment of the existing ground conditions, proof
roll testing of the stripped surfaces, observations of filling and compaction activities and compaction
testing.

All work was carried out in accordance with AS 3798 (Guidelines on Earthworks for Commercial and
Residential Developments) and AS1289 (Testing of Soils for Engineering Purposes).

          3.1 Stripped Surface Assessment

The Site was observed to be cleared of all debris, trees and topsoil. Any visible organic matter, loose
soils, silty soils, and any over wet areas were compacted or removed to depths exposing a suitable
foundation.

Typical materials forming the foundation for new fill are broadly summarised below:

      •   Silty Sandy Clay (CI), medium plasticity, brown, stiff, moist

3332 – Geoff Hussin                                                             MORRISON GEOTECHNIC
Tunba Court - Cooroy Mtn