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Attachment 5 - Geotechnical Assessment · MCU18/0015

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Attachment 5
(ye0technical Keport
Full text of the other 81 pages

Page 2

8 October 2015                                                                             J000128-001-L-Rev0


David Neate
C/- Pamela Davidson
Innovative Planning Solutions Pty Ltd
PO Box 1043
Maroochydore QLD 4558

Email: [email protected]
Cc:    [email protected]

GEOTECHNICAL SERVICES - 27 ATTUNGA HEIGHTS, NOOSA

Dear Pamela,
This letter report presents the results of a geotechnical assessment carried out by Core Consultants Pty Ltd
(Core) for a proposed development at the above site. The work was carried out in accordance with our
proposal Q000205-001-L-Rev0.
This office, previously operating as Golder, carried out a geotechnical investigation for a proposed
development on the site in 2003 (refer report 03682248-001, dated November 2003, attached). The proposed
development layout has since been amended. The 2003 geotechnical investigation covers much of the current
development layout, with the exception of the proposed development along the western boundary of the site.
Proposed development
We understand that the proposed development comprises a 19-unit residential development, as shown on
Innovative Planning Solutions drawing set SD.01 to SD.10 (D), dated 3 September 2015.
Fieldwork
To supplement and confirm the existing geotechnical report, the following geotechnical investigation was
undertaken:

       Site walk-over assessment
       Hand-auger borehole drilling
       Dynamic cone penetration (DCP) testing

The fieldwork was undertaken on 23 September 2015.
A senior geotechnical engineer from Core reviewed the 2003 geotechnical report, and then undertook a site
walk-over to assess potential changes to the site since the 2003 geotechnical investigation.
Two hand-augered boreholes (designated BH1 and BH2) were drilled in the western portion of the proposed
development footprint, to depths of 1 m and 0.9 m below ground level, respectively.
Dynamic cone penetrometer (DCP) testing was carried out adjacent to each borehole, to depths of 3.6 m and
3.1 m BGL, respectively.
Borehole locations were recorded in the field using a handheld GPS unit. Borehole locations are shown on the
attached Figure 1.
Reports of boreholes are attached, together with explanatory notes.
Site conditions at the time of our investigation are shown on the attached Photograph 1.

Page 3

J000128-001-L-Rev0
8 October 2015



Results
The site walk-over indicates that geotechnical conditions have not visibly changed since the 2003
investigation.
The ground conditions encountered in the boreholes in the western portion comprised about 0.3 m to 0.7 m of
very loose sand, then becoming loose. DCP testing indicates inferred medium dense sand from about 1 m
depth, becoming dense from about 2 m BGL.
No groundwater was encountered in the boreholes at the time of the investigation.
Recommendations
Considering that geotechnical conditions do not appear to have changed since the 2003 investigation, and that
the ground conditions encountered in the western portion are consistent with those encountered in adjacent
areas during the 2003 investigation, the recommendations in the Golder 2003 geotechnical report remain
applicable for the proposed development.
We anticipate that foundation conditions for proposed structures in the western portion of the development will
comprise deep sand. Footings supporting such structures will need to penetrate through the loose sand to
found in the underlying medium dense (or denser) sand.
A geotechnical engineer from Core must inspect footing excavations during construction to confirm the
founding conditions and design parameters (given in the attached Golder report).
The slope stability assessment and geotechnical advice on earthworks, retaining structures, footings,
pavement design, drainage & erosion, and construction management remain as per the attached Golder
geotechnical report (03632248-001).
Limitations
Your attention is drawn to the document, Limitations which is attached.

Yours sincerely,
CORE CONSULTANTS PTY LTD




Walter Mastenbroek                                               Geoff Hurley
MEngPr MSc BSc (Hons) PMP MIEAust CPEng RPEQ                     MSc DIC C.Geol RPEQ 5716
Senior Geotechnical Engineer                                     Director


WM/GAH/wm



Attachments:     Figure 1
                 Photograph 1
                 Borehole reports and explanatory notes
                 Golder Associates report 03632248-001
                 Limitations




                                                       2

Page 4

J000128-001-L-Rev0
8 October 2015




                                                                                               Attunga
                                                                                               Heights




                                 Picture
                                 Point Cr


Figure 1: Extract from IPS drawing SD.01 (D), showing the 2015 borehole locations.




Photograph 1: Site conditions during the fieldwork on 23 September 2015, looking approximately south-east
across the western portion of the proposed development footprint on 27 Attunga Heights.




                                                     3

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                                                                                                                                                                                                                                                                                          REPORT OF BOREHOLE: BH1
                                                                                                                                                                                                                                                                                                                     SHEET: 1 OF 1
                                                                                                              CLIENT:                                              David Neate C/- IPS                                          COORDS: 509147.0 m E 7080988.0 m N MGA94 56                                          DRILL RIG: Hand auger
                                                                                                              PROJECT: Proposed Development                                                                                     SURFACE RL: DATUM: AHD                                                               CONTRACTOR:
                                                                                                              LOCATION: 27 Attunga Heights, Noosa Heads                                                                         INCLINATION: -90°                                                                    LOGGED: WM               DATE: 23/9/15
                                                                                                              JOB NO:                                              J000128                                                      HOLE DIA: 100 mm HOLE DEPTH: 1.00 m                                                  CHECKED:                 DATE:

                                                                                                                                     Drilling                                              Sampling                                                                                      Field Material Description




                                                                                                                                                                                                                                                                                                                CONSISTENCY
                                                                                                                                                                                                                                USCS SYMBOL
                                                                                                                       PENETRATION




                                                                                                                                                                                                          RECOVERED
                                                                                                                       RESISTANCE




                                                                                                                                                                                                                                                                                                                                  DCP TEST (AS1289.6.3.2)




                                                                                                                                                                                                                                                                                                                CONDITION
                                                                                                                                                                                                                                                                                                                MOISTURE
                                                                                                                                                                                                                      GRAPHIC
                                                                                                                                                                                         SAMPLE OR                                                                                                                                   Blows per 100 mm
                                                                                                              METHOD




                                                                                                                                                                                                                                                                                                                DENSITY
                                                                                                                                                                                                                                                      SOIL/ROCK MATERIAL DESCRIPTION
                                                                                                                                                                   (metres)
                                                                                                                                     WATER




                                                                                                                                                                                         FIELD TEST
                                                                                                                                                                   DEPTH




                                                                                                                                                                                                                      LOG
                                                                                                                                                                              DEPTH                                                                                                                                           0    5     10    15     20    25
                                                                                                                                                                               RL
                                                                                                                                                                   0.0
                                                                                                                                                                                                                                SP            SAND
                                                                                                                                                                                                                                              fine to medium grained, pale grey brown, trace silt, trace root
                                                                                                                                                                                                                                              matter
                                                                                                                                     GROUNDWATER NOT ENCOUNTERED




                                                                                                                          L



                                                                                                                                                                                                                                                                                                                      VL
                                                                                                                                                                               0.40
                                                                                                                                                                                                                                              becoming pale grey brown and brown
                                                                                                                                                                                                                                                                                                                D-
                                                                                                              HA




                                                                                                                                                                   0.5
                                                                                                                                                                                                                                                                                                                M
                                                                                                                         M


                                                                                                                                                                               0.70
                                                                                                                                                                                                                                              becoming pale grey brown


                                                                                                                         H                                                                                                                                                                                             L



                                                                                                                                                                   1.0
                                                                                                                                                                                                                                              END OF [email protected] m
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                                                                                                                                                                                This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
                                                                                                                                                                               geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are
                                                                                                                                                                                    for information only and do not necessarily indicate the presence or absence of soil or groundwater contamination.

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                                                                                                                                                                                                                                                                                          REPORT OF BOREHOLE: BH2
                                                                                                                                                                                                                                                                                                                     SHEET: 1 OF 1
                                                                                                              CLIENT:                                              David Neate C/- IPS                                          COORDS: 509145.0 m E 7081001.0 m N MGA94 56                                          DRILL RIG: Hand auger
                                                                                                              PROJECT: Proposed Development                                                                                     SURFACE RL: DATUM: AHD                                                               CONTRACTOR:
                                                                                                              LOCATION: 27 Attunga Heights, Noosa Heads                                                                         INCLINATION: -90°                                                                    LOGGED: WM               DATE: 23/9/15
                                                                                                              JOB NO:                                              J000128                                                      HOLE DIA: 100 mm HOLE DEPTH: 0.90 m                                                  CHECKED:                 DATE:

                                                                                                                                     Drilling                                              Sampling                                                                                      Field Material Description




                                                                                                                                                                                                                                                                                                                CONSISTENCY
                                                                                                                                                                                                                                USCS SYMBOL
                                                                                                                       PENETRATION




                                                                                                                                                                                                          RECOVERED
                                                                                                                       RESISTANCE




                                                                                                                                                                                                                                                                                                                                  DCP TEST (AS1289.6.3.2)




                                                                                                                                                                                                                                                                                                                CONDITION
                                                                                                                                                                                                                                                                                                                MOISTURE
                                                                                                                                                                                                                      GRAPHIC
                                                                                                                                                                                         SAMPLE OR                                                                                                                                   Blows per 100 mm
                                                                                                              METHOD




                                                                                                                                                                                                                                                                                                                DENSITY
                                                                                                                                                                                                                                                      SOIL/ROCK MATERIAL DESCRIPTION
                                                                                                                                                                   (metres)
                                                                                                                                     WATER




                                                                                                                                                                                         FIELD TEST
                                                                                                                                                                   DEPTH




                                                                                                                                                                                                                      LOG
                                                                                                                                                                              DEPTH                                                                                                                                           0    5     10    15     20    25
                                                                                                                                                                               RL
                                                                                                                                                                   0.0
                                                                                                                                                                                                                                SP            SAND
                                                                                                                                                                                                                                              fine to medium grained, pale grey brown, trace silt, trace root
                                                                                                                                                                                                                                              matter
                                                                                                                                     GROUNDWATER NOT ENCOUNTERED




                                                                                                                                                                                                                                                                                                                      VL

                                                                                                                          L



                                                                                                                                                                                                                                                                                                                D-
                                                                                                              HA




                                                                                                                                                                                                                                                                                                                M
                                                                                                                                                                   0.5

                                                                                                                                                                                                                                                                                                                       L

                                                                                                                       M-H




                                                                                                                                                                                                                                              END OF [email protected] m
                                                                                                                                                                                                                                              PRACTICAL REFUSAL - Combination of tree roots and hole
                                                                                                                                                                   1.0                                                                        collapse
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                                                                                                                                                                                This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
                                                                                                                                                                               geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are
                                                                                                                                                                                    for information only and do not necessarily indicate the presence or absence of soil or groundwater contamination.

Page 7

                                                                              EXPLANATION OF NOTES, ABBREVIATIONS & TERMS
                                                                                   USED ON BOREHOLE AND TEST PIT REPORTS
 DRILLING/EXCAVATION METHOD
 AS*        Auger Screwing                                      RD         Rotary blade or drag bit             NQ          Diamond Core - 47 mm
 AD*        Auger Drilling                                      RT         Rotary Tricone bit                   NMLC        Diamond Core - 52 mm
 *V         V-Bit                                               RAB        Rotary Air Blast                     HQ          Diamond Core - 63 mm
 *T         TC-Bit, e.g. ADT                                    RC         Reverse Circulation                  HMLC        Diamond Core – 63mm
 HA         Hand Auger                                          PT         Push Tube                            BH          Tractor Mounted Backhoe
 ADH        Hollow Auger                                        CT         Cable Tool Rig                       EX          Tracked Hydraulic Excavator
 DTC        Diatube Coring                                      JET        Jetting                              EE          Existing Excavation
 WB         Washbore or Bailer                                  NDD        Non-destructive digging              HAND        Excavated by Hand Methods
 PENETRATION/EXCAVATION RESISTANCE
         L             Low resistance. Rapid penetration possible with little effort from the equipment used.
        M              Medium resistance. Excavation/possible at an acceptable rate with moderate effort from the equipment used.
        H              High resistance to penetration/excavation. Further penetration is possible at a slow rate and requires significant
                       effort from the equipment.
        R              Refusal or Practical Refusal. No further progress possible without the risk of damage or unacceptable wear to the
                       digging implement or machine.
 These assessments are subjective and are dependent on many factors including the equipment power, weight, condition of
 excavation or drilling tools, and the experience of the operator.
 WATER
                                 Water level at date shown                                             Partial water loss
                                 Water inflow                                                          Complete water loss
 GROUNDWATER NOT                                    The observation of groundwater, whether present or not, was not possible due to drilling water,
 OBSERVED                                           surface seepage or cave in of the borehole/test pit.
 GROUNDWATER NOT                                    The borehole/test pit was dry soon after excavation. However, groundwater could be present in
 ENCOUNTERED                                        less permeable strata. Inflow may have been observed had the borehole/test pit been left open
                                                    for a longer period.

 SAMPLING AND TESTING
 SPT                                   Standard Penetration Test to AS1289.6.3.1-2004
 4,7,11 N=18                           4,7,11 = Blows per 150mm. N = Blows per 300mm penetration following 150mm seating
 30/80mm                               Where practical refusal occurs, the blows and penetration for that interval are reported
 RW                                    Penetration occurred under the rod weight only
 HW                                    Penetration occurred under the hammer and rod weight only
 HB                                    Hammer double bouncing on anvil
 DS                                    Disturbed sample
 BDS                                   Bulk disturbed sample
 G                                     Gas Sample
 W                                     Water Sample
 FP                                    Field permeability test over section noted
 FV                                    Field vane shear test expressed as uncorrected shear strength (sv = peak value, sr = residual value)
 PID                                   Photoionisation Detector reading in ppm
 PM                                    Pressuremeter test over section noted
 PP                                    Pocket penetrometer test expressed as instrument reading in kPa
 U63                                   Thin walled tube sample - number indicates nominal sample diameter in millimetres
 WPT                                   Water pressure tests
 DCP                                   Dynamic cone penetration test
 CPT                                   Static cone penetration test
 CPTu                                  Static cone penetration test with pore pressure (u) measurement
 Ranking of Visually Observable Contamination and Odour (for specific soil contamination assessment projects)
      R=0            No visible evidence of contamination       R=A          No non-natural odours identified
      R=1            Slight evidence of visible contamination   R=B          Slight non-natural odours identified
      R=2            Visible contamination                      R=C          Moderate non-natural odours identified
      R=3            Significant visible contamination          R=D          Strong non-natural odours identified
 ROCK CORE RECOVERY
  TCR = Total Core Recovery (%)                                      SCR = Solid Core Recovery (%)                     RQD = Rock Quality Designation (%)

    
        Length of core recov ered
                                   100                     
                                                                 Length of cylindrica l core recovered  100      
                                                                                                                        Axial lengths of core  100 mm  100
           Length of core run                                               Length of core run                                Length of core run
                   




Explanation of Notes, Abbreviations & Terms Used on Borehole and Test Pit Reports                                                                  Date: 08/10/2015
FRM-068                                                                                                                                            Ver. 1.01

Page 8

                                                                       METHOD OF SOIL DESCRIPTION
                                                            USED ON BOREHOLE AND TEST PIT REPORTS
                 FILL                                                                                                               CLAY (CL, CI or CH)


                 GRAVEL (GP or GW)                                                                                                  ORGANIC SOILS (OL or OH or Pt)


                 SAND (SP or SW)                                                                                                    COBBLES or BOULDERS


                 SILT (ML or MH)


Combinations of these basic symbols may be used to indicate mixed materials such as sandy clay.
CLASSIFICATION AND INFERRED STRATIGRAPHY
Soil and Rock is classified and described in Reports of Boreholes and Test Pits using the preferred method given in
AS1726 – 1993, (Amdt1 – 1994 and Amdt2 – 1994), Appendix A. The material properties are assessed in the field by
visual/tactile methods.
                             Particle Size                                                                                               Plasticity Properties

  Major Division        Sub Division            Particle Size                                      40
              BOULDERS                            > 200 mm                                                                                                                 CH
                                                                                                                                                           CI         High plasticity
               COBBLES                          63 to 200 mm                                       30
                                                                                                                                CL
                                                                                                                                                        Medium             clay
                                                                                                                            Low plasticity
                                                                            Plasticity Index (%)




                                                                                                                                clay                    plasticity
                        Coarse                   20 to 63 mm                                                                                              clay

   GRAVEL               Medium                  6.0 to 20 mm
                                                                                                   20
                                                                                                                                                                                OH or MH
                          Fine                  2.0 to 6.0 mm                                                                                                                 High liquid limit
                                                                                                                                                                                     silt
                        Coarse                  0.6 to 2.0 mm
                                                                                                   10                                                   OL or ML
    SAND                Medium                  0.2 to 0.6 mm                                                                                           Low liquid
                                                                                                                  CL/ML Clay/Silt                        limit silt
                          Fine                0.075 to 0.2 mm                                                OL or ML - Low liquid limit silt

                  SILT                       0.002 to 0.075 mm                                     0
                                                                                                        0            10             20          30      40       50            60            70         80
                  CLAY                           < 0.002 mm                                                                                       Liquid Lim it (%)



 MOISTURE CONDITION                                                                                     AS1726 - 1993
 Symbol              Term           Description
      D                Dry          Sands and gravels are free flowing. Clays & Silts may be brittle or friable and powdery.
      M              Moist          Soils are darker than in the dry condition & may feel cool. Sands and gravels tend to cohere.
     W                Wet           Soils exude free water. Sands and gravels tend to cohere.

 CONSISTENCY AND DENSITY                                                                             AS1726 - 1993
  Symbol                Term                 Undrained Shear                                       Symbol       Term                                    Density Index %                     SPT “N” #
                                                Strength
     VS              Very Soft                  0 to 12 kPa                                             VL                  Very Loose                    Less than 15                             0 to 4
      S                  Soft                   12 to 25 kPa                                            L                        Loose                         15 to 35                           4 to 10
      F                  Firm                   25 to 50 kPa                                            MD              Medium Dense                           35 to 65                       10 to 30
     St                  Stiff                 50 to 100 kPa                                            D                        Dense                         65 to 85                       30 to 50
    VSt              Very Stiff               100 to 200 kPa                                            VD                  Very Dense                       Above 85                        Above 50
     H           Hard              Above 200 kPa
In the absence of test results, consistency and density may be assessed from correlations with the observed behaviour of
the material.
# SPT correlations are not stated in AS1726 – 1993, and may be subject to corrections for overburden pressure and
equipment type.



Explanation of Notes, Abbreviations & Terms Used on Borehole and Test Pit Reports                                                                                                           Date: 08/10/2015
FRM-068                                                                                                                                                                                     Ver. 1.01

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GEOTECHNICAL INVESTIGATION
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[ November 2003 03632248-001
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November 2003 -i- 03632248-001
TABLE OF CONTENTS
SECTION PAGE
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2.0 SITE DESCRIPTION o......cccccsccseccecsseessccsesssesacecsesessesscsnsassciscenecnareneers 1
3.0 PROPOSED DEVELOPMENT ...........cccccsccsesscsreessesssesscescsstssseesssesevseseseanes 2
4.0 METHOD OF INVESTIGATION ...........cccccsccssecscessecsscsscssscrevssssrssesecssraseees 3
4.1 FI@IGWOTK 0... eeeesseeecenecnetesseetaecaecoscesesnecseenaventsseesssssaseneecssessusensearsae 3
4.2 Laboratory Testing........ 4
5.0 INVESTIGATION FINDINGS. .............:cecssesssssessesesescsscsrscescrrvnssssasseeeanasears 4
5.1 Geology & Subsurface Conditions oo... ecccsseeseesssssscscseeseseesesesarenests 4
5.2 Laboratory Testing oo... ccccecscecsecseecsacesseecsessseecsscssseessvensesssenrscnssevasees 5
6.0 SLOPE STABILITY ASSESSMENT............:ccccedfesssescsessesccsagDucsesveesersenanees 6
7.0 GEOTECHNICAL ADVICE... cccesesssscssnmsetilcrenfecsesscesegi¥isDhsliesssevesssecs 9
7.1 Earthworks... cccesscssecesecessesscesseeseeessilVicedbersssessaessfitlia WVdeessecenseeneveneere 9
7.1.1 Site Preparation... eciiiteescessessesessMbscDbssessscssseesseesnsentes 9
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7.1.4 Batter Slopes... ee
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7.2 Retaining Structure Design .........0 04, vee
7.3 Footing DeSIQn... iii. ioeecesasedientberceseetecesccstsctscescaseeeeeeessseeseecseeeneneees
7.3.1 Deep Sand Foundations 00... cccecsscssecssctssecsetscseeseesseersenss
7.3.2 Shallow Clay / Rock Foundations ve
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8.0 IMPORTANT INFORMATION uu... cece eseeecteeecsseesesesereeeattnersetereesnees

 

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— November 2003 - ii- 03632248-001
LIST OF TABLES
Table 1 : Summary of Shear Strength Testing
Table 2 : Modelled Geotechnical Parameters
y Table 3 : Summary of Slope Stability Analyses
L Table 4 : Relative Risk Levels & Implications for Development
— Table 5 : Retaining Structure Design Parameters
Table 6 : Pavement Design Parameters
i LIST OF FIGURES
. Figure 1 : Site Plan
B Figure 2 : Section A-A
- Figure 3: Section B-B
= Figure 4 : Section C-C
os, Figure 5 : Section D-D
Lo
i , LIST OF PHOTOGRAPHS
_ Photograph 1 : View towards north below proposed Lodge
Photograph 2 : Colluvium exposure in creek bank below possible landslip
~ Photograph 3 : View into site towards test pit T'P9 from Viridian site
. LIST OF APPENDICES
* Appendix A : Reports of Boreholes, Test Pits & DCP Tests
nS Explanation Notes, Abbreviations & Terms Used on Borehole and Test
a Pit Reports
Method’of Soil Description Used on Borehole and Test Pit Reports
rN Terms for Rock Material Strength & Weathering and Abbreviations for
. Defect Descriptions
L, Appendix B : Geotechnical Laboratory Test Results
— Appendix C : Slope W Results
Appendix D : “Important Information About Your Geotechnical Engineering Report”

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1.0 INTRODUCTION
This report details the results of a geotechnical investigation carried out by Golden Ass

Pty Ltd (Golder) for a proposed Group Housing Development and Accommodation Buildi gz
at 26 Attunga Heights, Noosa Heads. The investigation was undertaken for Mr Phillip
Harding (Attunga Heights Pty Ltd) at the request of Victor G Feros, town planning
consultants for the project.

  

The development proposal comprises construction of Group Housing, an Accommodation
Lodge and two minor access roads, which bridge the creek. This report presents the results of
the site investigation and a slope stability assessment together with geotechnical advice
regarding earthworks, retaining structures, footings, pavements, drainage and other
construction matters.

2.0 SITE DESCRIPTION

The real property description of the site is Lot 27 on. RP\89506, Parish of Weyba and covers
an area of about 1.8 hectares. Attunga Heights and Picture Point Crescent terminate adjacent
to the southern and western site boundaries respectively. The site is bounded by residential
properties to the south and west, Halse Lodge (north) and the Viridian Noosa site (east).

Figure 1 shows the proposed development, layout overlain on the site plan, which includes
ground surface contours and the positions of trees. The base plan for Figure | is derived from
JMA Architects Drawing No. 978DA0001 Rev. B) dated 2 October 2003.

The majority of the site’ is.a moderately-to steeply sloping sand dune slope (with an easterly to
north-easterly aspect), intersected by.a meandering creek, which runs from the south towards
the north adjacent to the eastern site boundary. The dune slope has a maximum elevation of
about RL 58 m in the south-western corner of the site, with a minimum recorded elevation of
about RL 10 m in the bed of the creek adjacent to the northern boundary. Ground slopes
across the dune typically\range between about 20° and 30°, as shown in Photograph 1, with
steeper slopes of up to.40° occurring adjacent to the banks of the creek.

Boulders of diorite up to 800 mm across are exposed in the western bank of the creek in the
northern part of the site. A massive outcrop of diorite is exposed in the bed of the creek
adjacent to the middle of the eastern site boundary. There is also an approximately 1 m deep
outcrop of colluvium (clay and rock), shown in Photograph 2, exposed beneath about 1 m of
sand in the bank of the creek adjacent to the northern site boundary. This outcrop is located
on a relatively sharp bend in the creek below a possible landslip within the dune sand. The
approximate extent of the possible landslip is defined by ground sloping at about 40°, across
which a number of mature trees were observed to have bent trunks indicative of previous
ground movement.

Golder Associates

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The meanders of the creek have created two clay soil ‘islands’ that are defined along their
eastern edges by the fenced site boundary of the Viridian site. These areas have a westerly to
north-westerly aspect, with ground slopes ranging from about 5° up to 35° adjacent to the
creek. Boulders of diorite up to about 1500 mm across occur across the surface of these parts
of the site.

Vegetation across the sand dune comprises a scattered to dense cover of saplings and mature
trees with a light undergrowth, as shown on Photograph 1. The clay slopes mostly have a
dense cover of small trees and weedy undergrowth.

At the time of investigation, there was an existing house together with ancillary structures in
the southern part of the site, accessed by a driveway from Attunga Heights. A concrete public
walkway is located just outside of the western site boundary.

3.0 PROPOSED DEVELOPMENT

Drawings prepared by JMA Architects show the proposed. development» layout, including
sections and elevations of the proposed buildings (refi Drawing Nos)978 DA0000 to 3003,
Revision B).

Our understanding is that the project involves construction of the following:

e Lodge — three Jevel building (basement, ground and first floors) comprising masonry and
light-weight walls, ground level slabs and suspended timber floors with a metal deck roof.
Cuts up to about 2 m depth are proposed together with minor filling. Two lifts will be
constructed close to the Entry Court,

* Group Housing = 15 individual three level cabins (ground, first and loft floors)
comprising mostly light-weight construction with ground level slabs and suspended
timber floors. Cuts up\to about 6 m depth are proposed in the vicinity of Cabins 3B,
4A/B, 5A/B and 6B for a car parking level. Elsewhere, cuts will be less than 2 m depth
and fill will be supported by retaining structures.

In general, the proposed buildings will be suspended above the natural ground slopes and
proposed cut platforms.

We also understand there will be a driveway from Attunga Heights providing vehicle access
to garages on the ground floor of the Lodge. Two driveways will provide access to the cabins
from proposed ‘stub’ roads located within the Viridian site to the east, with timber bridges at

parking area.

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4.0 METHOD OF INVESTIGATION
41 Fieldwork

Initially, eight boreholes (designated BH1 to BH8) were drilled by hand augering, with
dynamic cone penetrometer (DCP) tests conducted from the ground surface adjacent to each
borehole. However, due to the loose and dry nature of the near surface sands, it was only
possible to extend the boreholes to depths of up to 0.9 m, below which the boreholes were
found to collapse.

In order to prevent collapse of the open boreholes, a second round of hand augering was
conducted with casing installed to depths of up to about 1.5 m. Additional hand augered
boreholes were drilled at three locations (BH2A, BH4A and BH7A). DCP tests were
conducted from the surface and within the boreholes at 1.5 m intervals in ordetto reduce the
effect of friction build up on the DCP rods and, thus, on the test results.

Test pits were dug using a 1.5 tonne excavator with 350 mnitoothed bucketto depths of up to
2.3 m. Test Pits TP5 and TP 6 were dug adjacent to,two of the previously drilled boreholes
(BH5 and BH6), which encountered shallow refusal toYDCP testing, Test Pit TP8 was dug in
sand adjacent to the creek. Test pits TP9 and. TP10 were dug on ‘lie clay slopes on the eastern
side of the creek. The size of excavator used.on’the site and.the number of test pits dug on the
eastern side of the creek was restricted by severe access limitations imposed by existing
structures and the density of vegetation cover as shown on Photograph 3.

Disturbed and undisturbed\(U50) tube samples obtained from the boreholes and test pits were
returned to Golder Associates’ Maroochydore laboratory prior to dispatch for geotechnical
testing (ref. Section’4.2),

The fieldwork was undertaken"by experienced geotechnical personnel on 9 October (initial
boreholes) and 16 October (second round boreholes and test pits), 2003. The borehole and
test pit locations are shown in Figure 1. Results of the fieldwork are presented in the Reports
of Boreholes, Test Pits DCP Tests in Appendix A, along with explanatory notes. Surface
levels shown on the borehole and test pit reports have been interpolated from survey
information supplied by the client.

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4.2. Laboratory Testing

Disturbed samples were tested for classification purpose by Geotech (S.C.) Pty Ltd to
determine:

¢ Soaked (4 day) CBR with 100% Standard Compaction (2 No.);
* Particle Size Distribution (PSD, 5 No.); and
e Atterberg Limits and Percent Fines (< 0.075 mm, 2 No.).

Golder Associates’ Mansfield laboratory conducted material strength testing on disturbed
sand and undisturbed clay samples, as follows:

e Direct Shear on sand remoulded at 70% Density Index (2-No.); arid

e  Triaxial Shear Test on undisturbed clay, CUM with pore*pressure measurements (1 No.).
Results are summarised in Section 5.2 below aptheect reports are presented in Appendix B.
5.0 INVESTIGATION FINDINGS

5.1 Geology & Subsurface Conditions

Published geological information’ indicates that the majority of the site is underlain by a
Quaternary (Pleistocen¢) age quartz sand dune, with Jurassic to Cretaceous age Noosa Quartz
Diorite to the east of the.creek and probably underlying the sand dune at depth.

The subsurface conditions encountered in the boreholes and test pits are variable as shown in
Sections A-A to D-D (Figures 2 to 5). Boreholes BH1 to BH4/4A encountered very loose to
loose dune sands to depths of between about | m and 3 m, overlying medium dense sand,
over dense sand below.about 3 m to 4 m down to the full depth of the boreholes.

Boreholes BH5 and BH6 encountered loose to medium dense sand, then DCP refusal at about
1 mto 1.5 m depth. Test pits TP5 and TP6 dug adjacent to the boreholes encountered very
loose to loose dune sand, containing some diorite gravel, cobbles and boulders up to 300 mm
across, overlying dense to very dense colluvium comprising about 30% grey to dark grey silty
sand and 70% diorite (extremely weathered to distinctly weathered, very low to medium
strength gravel and cobbles). Diorite cobbles and boulders up to 400 mm across were
excavated from Test Pit TP5, between 1.7 m and 2.2 m depth, where refusal of the excavator
bucket occurred. A massive shelf of diorite was noted in the creek bed about 10 m to the
north-east of test pit TPS. Refusal on diorite cobbles and boulders occurred immediately

' 1:100,000 Geological Map, GYMPIE SPECIAL, Sheet 9445 & Part 9545, DME, 1999

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Vo.

below the colluvium in test pit TP6 at 1.2 m depth. It is possible that the cobbles and
boulders are residual materials.

Borehole BH7A intersected very loose sand to 2.2 m depth, then medium dense sand to 2.5 m,

‘below which hard, medium to high plasticity sandy clay was encountered to hand auger

refusal at 2.8 m depth. From the DCP results, it is inferred that very stiff to hard clay extends
to about 5.8 m depth, where practical DCP refusal (35 blows/100 mm) was encountered.

Borehole BH8 and test pit TP8 encountered very loose to loose sand to 2.2 m depth, then
medium dense sand to 2.6 m, below which dense or hard materials were intersected to the
depth of investigation.

Test pits TP9 and TP10 located on the eastern side of the creek encountered stiff sandy clay
and mostly dense silty sand colluvium, respectively, to depths/of 0.4 m and “1,4 m. These
materials overlay very stiff to hard, inferred residual clay to-bueketrefusal om probable ‘core
stones’ of diorite at depths of 1.2 m and 1.7 m, respectively» Boreholes GAland GABH21
drilled on the Viridian site to the east encountered ‘sandstone’ below.2.9.m and 6.2 m depth,
respectively.

Only a trace of groundwater seepage was‘noted at 1.7 m, depth in test pit TPS during the
investigation. Groundwater was not ericountered in the other boreholes or test pits. Our
experience at similar sites indicates that groundwater ‘may develop in the sandy materials
overlying the less permeable clays arid soil / rock colluvium, particularly following periods of
heavy or prolonged rainfall.

4 Laboratory Testing

CBR values of 1 % and 14% were respectively recorded by testing carried out on silty clay
and silty sand samples recovered from test pits TP9 (1.0-1.2 m) and TP10 (0.5-0.7 m). The
CBR testing was conducted foliowing 100% Standard compaction and four days of soaking.

Atterberg Limits and-Percent Fines testing was undertaken on samples of sandy clay and silty
clay recoyered from 0.2 m and 0.9 m depth in test pit TP9. The results indicate a medium
plasticity clay with 57% material finer than 0.075 mm at 0.2 m depth, and a high plasticity
clay with 88% fines at 0.9 m depth.

Four PSD tests were conducted on sand samples recovered from the dune area and these
indicate that the material is fine to medium grained with a trace of silt. A PSD conducted on a
sand sample recovered from 0.5-0.7 m depth in test pit TP10, east of the creek, indicates a
fine to medium grained silty sand.

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The results of shear strength testing are summarised in the following table:

Table 1: Summary of Shear Strength Testing

 

Loe =

 
   

 

BHI SAND (SP) 6 42
(0.8-0.9 m)
BH4A SAND (SP) 11 40
(2.0 m) :
TP9 Silty CLAY (CH) 12 14
(0.6-0.8 m)
Full laboratory reports for the geotechnical testing are presented\in Appendix B.

 

 

 

 

 

 

 

 

 

 

6.0 SLOPE STABILITY ASSESSMENT

A quantitative slope stability assessment has been conducted for the site using the limiting
equilibrium software package SLOPE-W withy input. parameters obtained from the
geotechnical investigation to calculate factors of safety for specific sections of the site. This
information has been used to assess the level of risk and)implications for development.

Two sections (A-A (east) and A=A (west)) based on Section A-A on Figure 2 for the east and
west sides of the creek have been analysed. The following geotechnical parameters were
adopted for the model based on the investigation test results and our experience with similar
materials in the vicinity,

Table 2+ Modelled Geotechnical Parameters

 

    

 

 

 

 

 

 

 

Very Loose Sand 17 0 32
Very Loose Sand + Root 17 2 32
Matter

Loose-Medium Dense 17 0 36
Silty Sand

Dense Silty Sand 18 2 40

Dense-Very Dense 19 5 38
Colluvium

Very Stiff Clay 18 10 32

Diorite - Bedrock . . -

 

 

 

 

 

 

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The modelling results are given in Appendix C and are summarised in Table 3 below.

Table 3 —- Summary of Stability Analyses

 

 
   

 

 

 

 

 

 

Subsurface profile for Section A-A (east of creek — clay side) with a 0.8 1
piezometric ground water surface placed at interface between loose to ft
medium dense and dense silty sand. Existing subsurface conditions (east)
interpreted from test pit TP10.

Subsurface profile as for Run#1 (east), but with a piezometric ground water 1.9 2
surface placed at the lower interface of dense silty sand. (cast)
Subsurface profile for Section A-A (west of creek — sand dune side) with a 1.4 1
piezometric ground water surface placed at lower interface of very loose (west)
sand. Existing subsurface conditions interpreted from test pit TP6 and

borehole BH7A.

Subsurface profile as for Run#1 (west), but with a piezometrieground water 0.9 21
surface placed about 0.7 m above lower interface of very loose sand. (west)
Fully specified slip surface with a piezometric ground water surface placed 1.3 3
about 0.7 m above lower interface of very loose sand. (west)

 

 

 

 

The results indicate that the calculated facto of safety for the section east of the creek is
greater than 1.5, provided that the *groundwater/level is maintained at or below the lower
interface of the dense silty sand (inferred colluvium). Experience indicates that a factor of

safety of 1.5 corresponds to,a normally accepted level of risk.

The factor of safety reduces to/léss‘than one if the groundwater level rises within the colluvial
silty sand, resulting in the/poteiitial for slope instability on the creek banks (ie. where the

ground slope exceeds about,15° to 20°).

Stability modelling for the section west of the creek (ie. on the sand dune side) returned a
factor of safety of 1.4, being slightly less than the normally acceptable level for long-term

stability.

As mentioned in Section 2, and as shown in Figure 1, there is a possible landslip located
adjacent to the western side of the creek in the northernmost part of the site. The ground
surface in this area slopes at about 40° towards the east. This possible landslip appears to be
relatively shallow (about 1 m deep) and confined to the loose dune sand. At the toe of the
slip, in the western bank of the creek, colluvium comprising very stiff to hard clay and diorite
cobbles is exposed beneath about 1 m depth of sand. The toe of the slip is located on the
outside of a sharp bend in the creek. When water flows in the creek, it is possible that the toe
of the slip is exposed to high velocity flows, which may scour and undercut the slope, thereby

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initiating instability. Local erosion control measures (e.g. gabion baskets) to protect the creek
banks both here and elsewhere should be considered in detailed design. ,

The presence of this possible slip indicates that the steeper parts of the sand dune are close to
equilibrium (ie. factor of safety ~ 1). Our stability analysis indicates that when the
groundwater level rises 0.7 m above the lower interface of the very loose sand, the minimum
factor of safety reduces less than one for a 5 m long slip circle located on the lower part of the
slope (ie. in the bank of the creek). For a fully specified slip surface through the very loose
sand and extending up slope for a distance of about 20 m, the factor of safety is about 1.3,
being slightly less than acceptable for long-term stability.

From the above observations and stability analyses, it is considered likely that surface
slumping of the sand can occur within about 20 m of the creek after periods of heavy or
prolonged rainfall. This needs to be considered in the detailed design of the.footings for
structures (Section 7.3).

Subject to the implementation of the geotechnical advice in Section 7,0, it is our opinion that
there will be a Low to Moderate Risk of slope instability affecting the proposed development.
Such a level of risk is manageable provided that the proposed treatment options are adopted.

This risk assessment has been carried ott following the AGS Sub-Committee Guidelines on
Landslide Risk Management (March:2000)» Relative levels of risk and their implications are
given in the table below.

Table 4: Relative Risk Leyels & Implications for Development

 

 
 

 

VH VERY HIGH RISK | Extensive detailed investigation and research, planning and
implementation of treatment options essential to reduce to
acceptable levels; may be too expensive and not practical.

 

H HIGH RISK Detailed investigation, planning and implementation of

treatment options required to reduce risk to acceptable levels.

 

 

 

 

 

M MODERATE RISK | Tolerable provided treatment plan is implemented to maintain or
reduce risks, May be accepted, May require investigation and
planning of treatment options. ,

L LOW RISK Usually accepted. Treatinent requirements and responsibility to
be defined to maintain or reduce risk.

VL VERY LOW RISK | Acceptable. Manage by normal slope maintenance procedures

 

 

 

Note:(1)The implications for a particular situation are to be determined by all parties to the risk assessment; these are only given as a general guide.

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7.0 GEOTECHNICAL ADVICE
7.1 Earthworks
7.1.1 Site Preparation

Prior to any earthworks activities, organic rich topsoil must be stripped and removed from the
building areas. This material must not be used as fill to support any structural loads, however it
may be used in landscaping areas. Where footings are proposed to penetrate through new fill, it
would be prudent to ‘pre-excavate’ shallow colluvium (which contains cobbles and boulders)
and replace it with ‘clean’ soil that is free of particles greater than 100 mm. This should enable
less difficult excavation for footings following placement of fill.

7.1.2 Excavation

The results of the investigation indicate that the proposed excavations should encounter the
following subsurface conditions:

© Western (dune) side of creek: mostly very loose grading to dense sands, with possibly
dense to very dense colluvium (diorite cobbles and boulders with about 30% silty sand)
below about 1 m depth adjacent to‘the ereek. The depth of overlying sand increases up
slope to in excess of 6 m.

e Eastern side of creek: mostlymedium to,dense silty sand and stiff sandy clay colluvium
overlying very stiff to\hard inferred residual sandy/silty clay. Numerous high strength
diorite ‘core stone’ boulders below about 1.5 m depth.

Considering the above, excavation to the depths shown in the design drawings should be
achievable using conventional_carthmoving equipment, possibly with the assistance of
‘ripper’ attachments for efficient excavation of the colluvium and to dislodge large boulders.

7.1.3 Filling

Fill must not be placed on slopes exceeding 15° or on slopes within about 20 m of the creek
(Section 6), unless fully supported by engineer designed retaining structures (ref. Section 7.2).

Fill should be compacted at moisture contents within the range of -2% to +1% of optimum
moisture content for Standard Compaction. Confirmatory testing must be carried out at
regular intervals. A minimum of two tests per 300 mm vertical interval is recommended
where structural fill heights are to exceed 300 mm. Further details for control and testing of
fill are given in Australian Standard AS 3798-1996 “Guidelines on Earthworks for
Commercial and Residential Developments". Select fill should have a maximum particle size
of 100 mm for an uncompacted layer thickness of 200 mm and shall be compacted by

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repeated rolling to achieve a dry density ratio of at least 98% of the Maximum Standard Dry
Density for cohesive soils, or 75% Dry Density Index for cohesionless soils.

In accordance with good construction practice, fill embankments should be ‘benched’ into
slopes following stripping and ‘over built’ then trimmed back to the well compacted material.

7.1.4 Batter Slopes

As a general guideline, temporary unsurcharged cut batters in sand and clay should not be
formed steeper than 1V:2H. Flatter batters may be required if groundwater is encountered
during construction.

Cut batters should be assessed by a geotechnical engineer from Golder Associates during
excavation. Such assessments should be undertaken progressively, with excavated face
heights prior to inspection being limited to 2 m.

7.1.5 Temporary Excavation Support

For proposed excavations up to about 6 m deep within the yery loose grading to dense sands
on the western side of the creek, some form of'temporary support will be required to enable
construction to proceed safely. Options-for temporary support include:

e ‘Soldier’ piles comprising ‘H’ sections or CFA,piles with timber lagging;

e Sheet piles;

e Contiguous CFA piles with infiil grouting of voids;

e Secant piles; and

e Micro-fine grouting.

One or two rows of anchors will probably be required to provide sufficient lateral restraint for
the temporary support system depending on the height of the cut. Design of the support
system must be conducted with due consideration of embedded depth below the excavation
level, variability in stratigraphy over the anchor embedment length, dewatering requirements,
and anticipated ground conditions. Temporary support design must also take into account the
impact on nearby structures and ground vibrations from driving ‘H’ section or sheet piles
should be avoided.

Heavy duty drilling equipment is likely to be impractical for this site, as there are restrictions

to access due to the presence of trees and loose sandy slopes. Small tripod type auger rigs (for
CFA pile construction) or small skid rigs are available and would be well suited to the site.

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Selection of the temporary support system will need to consider the feasibility of using the
structure for long-term support and the associated cost benefits. For example, it may be
practical to incorporate some of these support systems into the permanent structure by
covering them with sprayed concrete and attaching facing panels. However, if the system
relies on temporary anchors or is prone to corrosion (eg. sheet piles), it will be necessary to
construct a permanent retaining system (e.g. a propped or cantilevered wall). Detailed advice
regarding design and installation of the support system should be obtained from a specialist
contractor.

7.2. _ Retaining Structure Design

Retaining wall design should be carried out using a triangular pressure distribution applicable to
the wall type (ie. active pressures for a cantilever wall or at rest pressures for a
propped/anchored wall) and based on the parameters in Table 5. The values in, Table 5 assume
that the walls are fully drained and no allowance is included for construction loading, up-
slope foundation loadings, the effect of sloping ground, or backfill compaction’stresses.

Table 5 — Retaining Structure Design Parameters

 

 

 

 

 

 

 

Unit Friction Lateral.Earth Pressure Coefficient
Weight Angle
(thm*) |\(Degrees)
Ky K, K,
1.7 30 0.3 0.5 3.0
Va 34 0.25 0.45 3.4
1.9 40 0.2 0.4 4.5
1.8 27 0.4 0.6 2.6
* * * * *

 

 

 

 

 

 

 

 

*: Variable dependent upon the type of material used and the degree of compaction achieved.

Positive permanent drainage must be installed behind retaining walls unless they are designed
for development of full hydrostatic pressures.

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7.3 Footing Design

Based upon the results of the investigation, we anticipate that the foundation conditions for
the proposed structures will comprise either deep sand or shallow clay / rock. It is our
preliminary assessment that the Lodge together with Cabins 3B, 4A/B, 5A/B and 6B will have
deep sand foundations, whilst the other structures will encounter shallow clay / rock
foundation conditions.

Golder Associates should carry out inspections of footing excavations during construction to
confirm allowable bearing pressures.

7.3.1. Deep Sand Foundations

Footings supporting structures on deep sand foundations will need to penetrate through the
loose sand to found in the underlying medium dense (or denser) sand. «Footings could
comprise bored piers, however significant fall-in is expectedyfrom the loose upper sand
resulting in construction difficulties unless the piers afe-installed using a casing/liner. Grout-
injected (CFA) piles would also be a suitable method for the proposed, construction.

Spoil from pile excavation should not be stockpiled on the slope, and similarly, any drilling
fluids used in drilling the piles should notbe discharged_onto the slope.

Piles founded in medium dense sand could be=designed using an allowable end bearing
pressure of 500 kPa and allowable shaft adhesion of 20 kPa, A specialist piling contractor
should confirm allowable pile capacities.

Apart from vertical\loads imposed by ‘the supported structure, final pile depth will also be
dependent upon bracing requiremenis to resist the potentially significant lateral loads exerted
on the piles by movement of loose sand. If localised instability develops in the loose surface
sand directly up the slope from a pile, heavy loads will be placed on the pile as the sand
attempts to flow down.the slope past the pile.

Estimation of lateral forces on piles should be based on an assumption that lateral ground
movements occur along the interface between loose and medium dense sand. The average
depth of the zone of loose sand is 3 m. Calculation of lateral forces on piles should be carried
out in accordance with the method outlined in the figure below.

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LOOSE SURFACE
SAND FLOWING
DOWN HILL

 
      
    
 

    
   

 

 

 

 

 
 

 

PILE
r
wd Passive K, = Jaterot earth
Pressure pressure cosfficlent
4 Dietrlayflo = 2.77
< Y = soll .density
wd = 18 KN/m>
a KpyH H_« depth of moving sand
| : =3m
@» 28°
Y= 18kN/m?
rT Equivalent Laterol Load on lle:

  

PL 4K nyH? x LSd

 

NOT.TO, SCALE

L ) Equivalent Pils
ee Width (di
. Nh {downstope) Equivalent Pils Width « 15 xd
(ipstope)

—
—e
oe

7.3.2. Shallow Clay / Rock Foundations

 

s Footings supporting structures‘on shallow clay / rock foundations must penetrate through any
7 unsuitable materials to, socket into natural soil comprising either very stiff to hard clay or
dense to very densevcolluvium. Considering the subsurface conditions encountered in the
shallow clay / rock areas, particularly.the probable interlocking of strong diorite cobbles and
boulders, the use of bored piers or conventional strip or pad footings are considered to be

 

ud suitable options.

“ However, due to the presence of loose surface sands, and possibly seasonal groundwater

seepage, contingency’ should be allowed for the installation of temporary liners to support
7 open bored pier holes. Furthermore, due to the presence of strong diorite boulders within the
foundation, the pier boring equipment used must be capable of penetrating such materials (eg.
with a pick attachment).

a Piers which socket into the very stiff to hard clay or dense to very dense colluvium may be
4 designed using an allowable end bearing pressure of 600 kPa for cleaned bases and side
adhesion of 40 kPa.

Conventional strip or pad footings may be used to provide support elsewhere in the shallow
= clay / rock area. Such footings should penetrate through any fill and colluvium to found at
least 200 mm into natural very stiff (or stiffer) clay or medium dense sand. The footings may
be designed using an allowable bearing pressure of 200 kPa.

 

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Based upon our slope stability assessment in Section 6, piers or deeper pad footings must be
designed to resist lateral movement from:

e the sandy colluvium (up to about 1.5 m deep) on the eastern side of the creek where
ground slopes exceed 15° (includes Cabins 1A, 3A and 3C); and

e the very loose to loose sands (up to about 3 m deep) on the western side of the creek
below about RL 25 m (includes Cabins 1B, 1C, 2B and 2C).

Structures in these areas must also be braced at the surface to resist lateral movement.
7.4 Pavement Design

Design parameters for pavements will be dependent upon the subgrade materials present after
earthworks and the type, depth and quality of new fill used ¢o bring the site‘to\design levels.
The geotechnical laboratory testing from this site, together.with the test pit and borehole
results, indicate that the subgrade materials exposed following. earthworks may vary
dependent upon the location. CBR values assessed from the results ‘of this investigation, and
from previous experience, are provided in Table 6.

Table 6; Payement/Design Parameters

 

Design Comments
CBR’
(%)

5-15 Value to be adopted will be dependent upon
thickness and quality of fill placed.

 

 

 

3 Greater than laboratory result of CBR 1% (see
note 2).
5 Considered appropriate based upon experience

with similar materials.

 

10 Less than laboratory test result, however
considered suitable based upon our experience
with similar materials.

 

 

 

 

 

 

Note: 1. Pavement design parameters assume that ‘good’ drainage is installed and maintained.
2. Subgrades with CBR < 3% should be designed as per subgrades with CBR = 3% but with the initial
subgrade layer stabilised to a depth of 100-150 mm (eg. cement treated base).

Detailed subgrade evaluation should be undertaken during construction following earthworks
to confirm design CBR values and the extent of any subgrade stabilisation (if required). This
should comprise inspection by Golder Associates.

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7.5 Drainage & Erosion Control

In general, site drainage should be designed to readily remove surface water and to prevent
ponding of water on subgrade areas during construction and also adjacent to foundations and
perimeter slabs once construction is completed. ,

Erosion can be prevented by minimising vegetation disturbance and by avoiding concentrated
high velocity surface water flows by localised grade control and collection of roof runoff in
holding tanks. Also, average gradients of finished surface profiles should not be made steeper
than the existing surface.

To minimise site erosion and maintain stability of slopes after completion of construction, it is
recommended that the denuded banks of the creek should be revegetated. The investigation
results indicate that groundwater seepage may be encountered‘in areas.along and above the
creek banks following periods of heavy or prolonged rainfall.

Excess stormwater collected from the site (eg. tank. overflow) should be directed by pipes to
an engineer designed dissipation structure(s) located within the creek.

As a precautionary measure to prevent instability ofthe creek bank, a subsurface cut-off drain
is recommended along the up slope. side of proposed Cabins 1A, 2A and 3A. The cut-off
drain should penetrate into the upper intetface of the inferred residual clay underlying the
colluvium. It should be noted that this drainvis not required for long-term stability of the
proposed structures, whiclwill be supported by footings designed to resist lateral forces, but
is a precaution to prevent. slumping and. erosion of the creek bank. Golder Associates should
review the design of the drain)

7.6 Construction Management

It will be necessary to implement a Construction Management Plan (CMP) for the proposed
development. The CMP should include control measures for each component of the proposed
construction works to maintain stability of the sand dune in compliance with the
recommendations of this report. Golder Associates should prepare relevant parts of the CMP
or review the document prior to finalisation.

Golder Associates

Page 27

RTI 11/055 Folio B400

 

 

 

November 2003 -16- - 03632248-001

 

8.0 IMPORTANT INFORMATION

Your attention is drawn to the document - “Important Information About Your Geotechnical
Engineering Report”, which is included in Appendix D of this report. This document has
been prepared by the ASFE (Professional Firms Practicing in the Geosciences), of which
Golder Associates is a member. The statements presented in this document are intended to
advise you of what your realistic expectations of this report should be, and to present you with
recommendations on how to minimise the risks associated with the groundworks for this
project. The document is not intended to reduce the level of responsibility accepted by
Golder Associates, but rather to ensure that all parties who may rely on this report are aware
of the responsibilities each assumes in so doing.

We would be pleased to answer any questions about this important information from the
reader of this report.

GOLDER ASSOCIATES PTY LTD Flow

fro! Ashley Davel John Legge
Geotechnical Engineer SenionGeotechnical Engineer

JABRISBANE.03\GEOTECH.03\03632248\00_CORRESPONDENCE\OUT03682248-001,D0C
ACD/MIL/JL/acd

Golder Associates

Page 28

 

RTI 11/055 Folio B401
7

"45

 

8

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

tregescopytoht © Golder Associates Ply, Lid,
,
\

 

 

 

 

 

 

 

 

{
‘oO
>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

=

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ORITE BOULDERS UP
"9 T0

pose ; IN
K ®

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ised use or reproduction of this plan either wholly or in parl without wri{len permission |
%

 

-)

 

2

 

 

 

 

 

; 5 Se
SO ee ee ee ) : ss WALKWAY

 

 

 

BRS. BOREHOLE LOCATION

 

 

 

 

GR

 

 

 

 

All BOREHOLE FROM BAYVIEW NOOSA PROJECT NOTES:
PERMISSION OF JOHN HOLLAND PTY LID. DO NOT SCALE
POSSIBLE LANDSLIP — PROWEGT
Mr P Harding Attunga Heights
5 ROCK OUTCROP a. ORARN DATE Ime
a . 0 10 20m EFGolder {|= am —~ oS SITE PLAN
SEE COLLUVIUM OUTCROP 1:500 ————— $= Associates SoU 12-\\-o2
10 , r SCALE 4:500 ABH 03632248-1 FIGURE No 1

 

 

 

Information contained on this drawing is the copyright of Golder Associales Pty. Lid. Unaulhorise

k:\_Brisbane\2003\Geotech\03632248\01_FIGURES\03632248-1.dwq Jan 09, 2004 - 4:29pm ~ NOTE: THE * BESIDE THE TYPED INITIALS DENOTES THE ORIGINAL DRAWING ISSUE WAS SIGNED OR INITIALLED BY THAT RESPECTIVE PERSON.

— ‘ LL.

 

Page 29

RTI 11/055 Folio B402

 

  
 
 

          

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T
0 —- 3
al _ |
— 3 tL
os =
a ale 5 eS
3 si 2 2 [ye
é a =. 35
re a ia
4 a a. 9
te al VSt-H inferred below —
4 TR6 as ce
i (Offset 2m +. 15
= 10: 10
; LEGEND
SAND BS cy SB oiorne
i SILTYSSAND BB cuvey GRAVEL SILTY CLAY
E SANDY CLAY [] SANDSTONE 4 COLLUVIUM
; INTERPRETIVE ONLY
: DO NOT SCALE
3 CLIENT PROJECT
= 7 Mr P Harding Attunga Heights
2 te PS oe 03/103. |"
E Pisouer,. CHECKED po DATE 12 {i (02 SECTION A-A
: en 1:200 a3 |" 9 3632248-2 ee 2

 

 

 

 

 

 

 

K:\_Brisbane\2003\Geotech\03652248\01_FIGURES\03632248-2.dwg Nov 13, 2003 - 8:59am NOTE: THE * BESIDE THE TYPED INITIALS DENOTES THE ORIGINAL DRAWING ISSUE WAS SIGNED OR INITIALLED BY THAT RESPECTIVE PERSON.

Page 30

Golder Associates Ply. Cia.

wy

awiniges copyright.

use or reproduction of this plan either wholly or in part wilhout written permis

Information contained on this drawing is the copyright of Golder Associates Pty. Ltd. Una

RTI 11/055 Folio B403

 

&
|
1

(ete

Paes

GAI1

Be (offset .9m N)

 

Leathe eee php pd

10

NOTES:

BOREHOLES GA11 AND GABH21 HAVE BEEN REPRODUCED FROM THE VIRDIAN PROJECT WITH THE
PERMISSION OF JOHN HOLLAND PTY LTD.

 

indary

Site

(4) san

 

SILTY SAND

 

‘SANDY CLAY

TPS
(Offset 1.2m N)

SECTION B-B

BB cv
EB cuvey craven

(1 sanostone

BH4A,
(Offset™5.5imeN)

   
 
  
 
       
    
 

BH3
(Offset 5.7m S)

| |
a iF Fa) Fa YO

heat Toei hein rid

 

 

25

20

15

10

 

 

 

 

 

 

 

 

(BA dorne
B SILTY CLAY
COLLUMIUM
INTERPRETIVE ONLY
DO NOT SCALE
2 oy Mr P Harding ee Attunga Heights
ae PS ese! 08/41/03. |"™ Section DS
ae 1:300 a3 9 3632248-3 a 3

 

 

 

 

 

 

K:\_Brisbane\\2003\Geotech\03632248\01_FIGURES\03652248-3.dwg Nov 13, 2003 - 8:57am

NOTE: THE * BESIDE THE TYPED INITIALS DENOTES THE ORIGINAL DRAWING ISSUE WAS SIGNED OR INITIALLED BY THAT RESPECTIVE PERSON.

 

 

Page 31

RTI 11/055 Folio B404

 

 

 

 

 

 

 

     
    

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0 —— —— 4
a] = _
Hi alg 5 rr
3 + 35
4 a GABH21 L
4 0 = (Offset 18.9m N) + 3
= 7 = TP9 cc
> 4 (Offset 15.2m §) i=
3 6 + Sel + 3
2 ys L
a lt st |
‘a a Refusal to }—
é 20 —— mee + 2
i 18 —— + «(15
; A SEQTION C-C L
; 10 ole 35
; BB cy (4 ore
SILTY SAND Be cuvey GRAVEL SILTY CLAY
’ SANDY CLAY [J sanostone
e INTERPRETIVE ONLY
DO NOT SCALE
CLIENT PROJECT
Mr P Harding Attunga Heights
Golder ps PS mare” 711703: = eeTiONee
lee ease | eles ;
3 | BOREH REPRODUCED FROM THE VIRDIAN PROJECT WITH THE Ronee aa
|| FEMISSON GF JOHN HOUND Prr UD. or 1:250 asl" 03632248-4 Me 4

 

 

 

 

 

 

 

K:\_Brisbane\2003\Geotech\03632248\01_FIGURES\03632248-4.dwg Nov 13, 2005 - 8:55am NOTE: THE * BESIDE THE TYPED INITIALS DENOTES THE ORIGINAL DRAWING ISSUE WAS SIGNED OR INITIALLED BY THAT RESPECTIVE PERSON.

Page 32

RTI 11/055 Folio B405

 

 

se or reproduction of this plan either wholly

   
  

ined on this

ea

0

45

5

 

no

 

 

BH2
(Offset 19.3m

 

SILTY SAND

Fe sanpy clay

 

     

 

 

 

 

 

 

 

 

 

 

 

—- 60
BH1 a
T + 5
le ey
sl
LE ag
SECTION..D+D T
+ 3
LEcENp .
Ec Sl vore == 0)
Fay CLAYEY GRAVEL SILTY CLAY
[_] sanostone COLLUVIUM
INTERPRETIVE ONLY
DO NOT SCALE
Z St Mr P Harding ree Attunga Heights
iii PS AMES Bit (03h9 [8
SECTION D-
Fi soue: CHECKED “bu DATE 12fu| o2 O D
as 1:250 a3 |" 93632248-5 SORE, 5

 

 

 

 

 

 

K:\_Brisbane\\2003\Geotech\03632248\01_FIGURES\03632248-5.dwg Nov 13, 2003 - 9:02am

NOTE: THE * BESIDE THE TYPED INITIALS DENOTES THE ORIGINAL DRAWING ISSUE WAS SIGNED OR INITIALLED BY THAT RESPECTIVE PERSON.

 

Page 33

RTI 11/055 Folio B406

November 2003 03632248-001

 

Photograph 2: Colluvium exposure in creek bank below possible landslip

Golder Associates

 

Page 34

RTI 11/055 Folio B407

November 2003 03632248-001

 

 

Photograph 3: View into subject site towards tes? pit TP9 fromViridian site

Golder Associates

Page 35

a 3 t d

 

 

 

" RTI 11/055 Folio B408

Appendix A
Reports of Boreholes, Test Pits & DCP Tests
Explanation Notes, Abbreviations & Terms Used on Boreholes
and Test Pit Reports
Method of Soil Description Used_on Borehole and Test Pit
Reports
Terms for Rock Material Strength & Weathering and
Abbreviations formDefect Descriptions

Golder Associates

 

Page 36

 

 

 

RTI 11/055 Folio B409 - ae oe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

Beate.
SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development SURFACE RL: 54.5m DATUM: AHD71 ORILLER:
LOCATION: _— Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 9/10/03
JOB NO: 03632248 HOLE DIA: 100 mm HOLE DEPTH: 0.90 m CHECKED: her DATE: 210%
Drilling Sampling Field Material Description
Bw a = 3 °
ES uw g w [2 DCP TEST (AS1289.6.3.2)
8 Berea rnprest |S1e | & SOIL / ROCK MATERIAL DESCRIPTION 5 ibe Blows per 100 mm
Yale | as ol] alo 222
¥ jee) | BE PR #l83|2 g\gap = 1 2%
9.0~T-sa50 TSP] SAND
1 fine to medium grained, fight grey, trace of root matter 1
O90} ee Pd
< 54.20 | becoming pale grey 7
* 05—] =| 5 4
0,90 _| DS 0,80-0.90m on 1
10—| 53.60 END OF [email protected] m
wd UNABLE TO EXTRACT 7
15 =
20 om
254 4
3.0 4
2 35 4
§ A J
8 4 1
s 4.0 +
5 4 4
5 4 4
8 ; J
8 45-] 4
gl 4 4
5 4 4
8 4 4
g 4 4
y 5.0 4
8 4 4
2 4 4
& 557) 4
& 4 J
& 4 4
5 4 4
2 6.0 4
5 4 4
8 1 J
&
a 7 J
z| 65— 4
a 7 4
w 7 4
& 4 4
8 J 4
=| \
Brot tba ao coats “ceo TE re ee ae me Bae me tine
a This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
2 geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. me

 

 

 

Page 37

 

 

RTI 11/055 Folio B410

 

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development SURFACE RL: 47.56m DATUM: AHD71 DRILLER:
LOCATION: Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 9/10/03
JOB NO: 03632248 HOLE DIA: 100mm HOLE DEPTH: 0.80 m CHECKED:Att> DATE: ZAfrojos
Drilling Sampling Field Material Description
Su a 3
ge SAMPLE OR a o 3 w a DCP TEST (AS1289.6.3,2)
Q ea > w] 2 — 5 Blows per 100 mm
Z Be fi E i FIELD TEST 3 6 a SOIL / ROCK MATERIAL DESCRIPTION E Be Pr
3
gag § we bEpTH BI so|a 8 fered 5 10 15 20 25
9.0 Taro SP] SAND 1
1 fine to medium grained, light grey, trace of root matter z 1
o30f |] fe 7
« 47.20 becoming pale grey a
xr 71 > 7
05-| DS 0.50-0.70m aE = 7
“| 080 7
“| 46.70 END OF [email protected] m |
10-| UNABLE TO EXTRACT a
15 “|
2.0—~) 4
25— co
3.0—4 =
2 35 4
8 4 4
g J
= 4.04 4
8 “J 4
5 4 4
z| 1 4
5 a 4
g 4 4
e 4 4
: 1 !
§ 5.0 4
g 4 4
8 4 J
é 554 4
QI 4 4
i 4
a 4
a 4 4
2 1 4
3 6.0 +
5 J
y 7 4
2 4 4
a 71 4
ge 65 4
q 4 4
o 4 4
g 4 4
8 4
3 4
spo-t las -b--—---4 Dace tee eee HH Bae teh
g This report of borehole must be read in conjunction with accompanying notes and abbreviations. it has been prepared for
g| geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. oD

 

 

 

Page 38

“——RTI-11/055 Folio B4it— ee

1 L L 4 i 4 [ ] L

=

c

 

 

 

 

REPORT OF BOREHOLE: BH2A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GAPS§_1_MOORE.GLB FULL PAGE JA20031OTHER OFFICES\03632248103632248BHDCP.GPJ GAPS_1.GDT 06/11/2003 8:43.29 AM

 

 

 

 

 

 

 

 

 

SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development SURFACE RL: 47.6m DATUM: AHD71 DRILLER:
LOCATION: Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 16/10/03
JOB NO: 03632248 HOLE DIA: mm _ HOLE DEPTH: 6.00m CHECKED: Ate DATE: 24fro fos
Dritling Sampling Ftetd Material Description
Sul oO s 3
ee @ 8 w |Z DCP TEST (AS1289.6.3.2)
Slésle| oo SAMPLEOR wi | — SOIL / ROCK MATERIAL DESCRIPTION & |e Blows per 100 mm
2 lia) i] eB FIELDTEST |2/z | @ 5 loa
2 on a Oo] solo 222
b leg} S| Be Pa #1888 gipae  § 10 8 8
9.0—T 9750 TSP]SAND
J fine to medium grained, light grey, trace of root matter Fs 7
agof Ye q
Yara (becoming pale grey J
0.5— -
1.0 —
15 4
2.0 om
2.5 =
= 30 4
J = a
35-4 bom
40 ae
45 rs 4
5.0 com
1 1
§.5-— 4
a) 6.00 J
ef ATO END OF [email protected] m |
6.54 4
po—tLelygt —L-——___4 jt LJ 4

 

This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination.

 

 

 

 

 

GAP gINT FN. FO1b)
RL2

 

 

Page 39

j

—

—RTI-L17/055 Folio B4it2z

 

c~7

Cisse.

CLIENT: Mr Phillip Harding
PROJECT: Housing Development
LOCATION: Attunga Heights

JOB NO: 03632248

POSITION: Refer to Site Plan
SURFACE RL: 35.6m DATUM: AHD71 DRILLER:
INCLINATION: -90°
HOLE DIA: 100 mm HOLE DEPTH: 0.80 m CHECKED: Ave _DATE:21( 10/63

REPORT OF BOREHOLE: BH3

SHEET: 1 OF 1
DRILL RIG: Hand Auger

LOGGED: PGH DATE: 9/10/03

 

 

oD rs

Drilling

Field Material Description

 

PENETRATION
RESISTANCE
WATER

METHOD
DEPTH

DEPTH
RL

SAMPLE OR

FIELD TEST SOIL / ROCK MATERIAL DESCRIPTION

RECOVERED
GRAPHIC

LOG
USC Symbol

DCP TEST (AS1289.6.3.2)
Blows per 100 mm

lo § 10 15 20 25
Ltt

CONSISTENCY

MOISTURE
DENSITY,

 

©! (metres)

 

re] TI

Tw

2

35,50

HA

ow
vz

fine to medium grained, light grey, trace of root matter to

 

0,80 _| DS 0.70-0.80m

 

a

=

VC

 

&

GAPS_1_MDORE.GLO FULL PAGE JA2002\0 THER OFFIGES\03832248103632248BHDCP.GPJ GAPS_1.GDT 21/10/2003 10:21:08 AM

cI

 

34.70

 

 

 

 

 

pt J | Lygpt —-Li—— 4
This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for.
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. roi

END OF [email protected] m
UNABLE TO EXTRACT

 

 

 

 

 

 

 

 

 

 

et ee tt te te lit dk

 

 

 

 

 

Page 40

RTI-117055 Folio B413 oe eee oe

 

 
 
  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

i PGolder REPORT OF BOREHOLE: BH4
~ "Associates
SHEET: 1 OF 1
[~ CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development SURFACE RL: 26m DATUM: AHD71 DRILLER:
LOCATION: = Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 9/10/03
- JOB NO: 03632248 HOLE DIA: 100 mm HOLE DEPTH: 0.90 m CHECKEDAtip — DATE:24 fio fo
Drilling Sampling Field Material Description
° Sy 2 = 3
Eg wu zg w zs DCP TEST (AS1289.6.3.2)
rm (8/84 2 | oa SAMPLEOR jwi/2 | & SOIL / ROCK MATERIAL DESCRIPTION eats Blows per 100 mm
Pine ra zs FIELD TEST ole, @ 5 los
fz a o oO 5 Zz
Ls [Beg s | Be [par #183] 8 gap if ° 2%
9.0—~T7600 TSP] SAND 4
7 | fine to medium grained, light grey, trace of root matter to] =
7 a2m 3 7
t. Tool | fey poo 7
=< os 25.60 becoming fine grained, pale grey s! J
[* J =
La 1 0.90 _| DS 0.80-0.90m we 7
10-| 25.10 END OF [email protected] m |
“dl UNABLE TO EXTRACT I
we 1.54 4
2.0 co
P 1 |
L
2.5 =
3.0 4
rm 1 J
Ls 4 J
2 35-4 a
r> @ 4 4
3 4 4
1 8 ] q
= 40 4
~\ 8 wy i
5 4 4
2 4 4
Li 3 ] J
2
6 454 4
=, 8 4 4
a 4 4
8 4 z
5 4 4
§ 5.04 4
al 2 1 q
§ 4 4
a 4 a
_§ a 7
7 E 1 7
“ fi = 4
2 7 4
3 6.0 oe
eat ty 4 :
8 4 4
d 7 4
2 65-4 4
. 9 4 4
a 4 4
a
Ly
EA 5 4
qpot—-te—yet —-lL------- J--l-4t—--—----~+-—-—--—~-~--—-—----- -— H——4t—-t Ll
* 3 This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for.
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. rote

 

 

 

Page 41

 

"TRTI-117055_ Folio B414- > ~ Ce ~ as

mo

 

  

 

 

 

 

 

 

   
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan ORILL RIG: Hand Auger
4G PROJECT: Housing Development SURFACE RL: 26m DATUM: AHD71 DRILLER:
LOCATION: = Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 16/10/03
JOB NO: 03632248 HOLE DIA: mm_HOLE DEPTH: 5.50 m CHECKED: A-cg> DATE: &Ht0/oS
[ Drilling Sampling Field Material Description
Sw] a = 3
3 s wv ° 2 yw s DCP TEST (AS1289.6.3.2)
Slee al ag SAMPLE OR gle | SOIL / ROCK MATERIAL DESCRIPTION p lee Blows per 100 mm
B 2a) 2 | 3 loco 8/8818 Bi22b 2s 10 18) 20s
L [2 feel S| ae Pa 2|89/ 8 gigar__t P
0.07506 TSP] SAND
[ fine to medium grained, light grey, trace of root matter to} = 7
7 0.2m a T
= few t | ey Po J
os— 25.60 becoming fine grained, pale grey
1.0 ~
VY’ 15—4 4
L
2.0- DS 2.00-2.10m 7
[, 4 J
254 4
[ |s 1
4 4 4
3.0 = 4
“I DS 3.00-3.10m fi 4
3 35 I
[i
8 J J
S| 4.04 4
—~ 8 “J 4
5 J 4
i z a J
3 45 4
2 4 4
: g
a 4 4
CHI) | 3 :
1 & 1 7
§ 5.0 +
§ 4 4
3 4 4
CH] 7
3 55—|_5.80 : J
4 3 we | 20.80 END OF [email protected] m 4
6 4 4
& 4 4
g so] 4
ry 3 7 4
rg 1 |
&
| 7 4
z 6.5 =
-~ g 4 4
3 4 4
[i
Q | 4
s 4 4
spo ttHlset —tL--——---4 a--4------~-—----~---- ~~ | 4
a g This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for.
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. mo

 

 

 

Page 42

A jd . }

=

 

|

ctT re omc , om FD
E.GLB FULL PAGE JAZQ03\0THER OFFICES103632248103632248BHDCP.GPJ GAPS_1.GDT 21/10/2003 10:21:13 AM

on

RTI 11/055 Folio B415

 

 
   
  

Golder REPORT OF BOREHOLE: BH5
rASSOciat

 

 

 

 

 

 

 

GAPS_1_MODORI

 

SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development SURFACE RL: 19.6m DATUM: AHD71 ORILLER:
LOCATION: Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 9/10/03
JOB NO: 03632248 HOLE DIA: 100 mm HOLE DEPTH: 0.80 m CHECKED: Aco DATE: 2} (10 (03 |
Drilling Sampling Field Material Description
Zz Pod
e8 g 3 w |e DCP TEST (AS1289.6.3.2)
Sl@fle| xg SAMPLEQR |gl2 | & SOIL / ROCK MATERIAL DESCRIPTION aids Blows per 100 mm
G (2g|&| bs sleelg Bz 5 0 15
zleel2 | 38 a z182/ 8 gap _f 8 2
0.07850 TSP] SAND
7 fine to medium grained, light grey, trace of root matter to 7
7 0.2m 7
x 7 slo 4
4 a 4
* os a a
{0.80 | DS 0.70-0.80m “ 7
| 18:70 END OF [email protected] m 4
10— UNABLE TO EXTRACT |
15— 4
20 4
25—- -
3.0 4
35 4
4.0 +
45 4
5.04 4
55 on
6.0~ 4
6.54 4
PH—to—ty7gt —L—————_4 Joel Pitot LL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This report of borehole must be read in conjunction with accompanying notes and abbreviations, It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. Foi

 

 

 

 

Page 43

r-

 

a 47

mp7 om) oT

}

GAPS_1_MDORE.GLB FULL PAGE J:\200RX0THER OFFICESI03832248103632248BHDCP.GPS GAPS_1.GDT 21/0/2003 10:21:29 AM

C

RTI

11/055 Folio B416

 

 

 

Prscue

REPORT OF TEST PIT: TP5

SHEET: 1 OF 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan MACHINE: 1.5 Tonne Excavator
PROJECT: Housing Development SURFACE RL: 19m DATUM: AHD74 CONTRACTOR: Bebbington
LOCATION: — Aftunga Heights PIT DEPTH: 2.20m LOGGED: ACD DATE: 16/10/03
JOB NO: 03632248 BUCKET TYPE: 350 mm toothed CHECKED: At DATE: Ziprojps
Excavation Sampling Field Material Description
és a z wie STRUCTURE AND
Sg @ 8
8/ze| «| = SAMPLE QR B12 1 E SOIL / ROCK MATERIAL DESCRIPTION 2 Be ADDITIONAL
= eae) es pePrH 8 Se O° & leg OBSERVATIONS
= ae] S) Ae PR 2/59 3 2 [84
=] °° rs00 ‘TSP]SAND
i fine to medium grained, white to light grey, some roots to 7
= 7 0.4 m, trace of roots to 1.0m 1
g 4 4
& =j7
Ly} | 05 als +
g 4 4
uw 4 4
g) | ]
i 4 4
| 18] 49] 1.00 4
% ae | ih [8.60 Mixture of SOIL (~30%) and ROCK (~70%) Coftuvium J
id Soil is: SM Silty SAND
= 7 fine to medium grained, dark grey Yo 7
ulé 4 Rock is: Mixture of XW to DW DIORITE =| > 7
w 7 very low to medium strength, dark greyrand'dark brown, a 7
3 1.54 present as subangular to subrounded gravel and cobble: om
& 1 470 up to 200 mm across 7
Po) arse DIORITE Possibly Residual 7
yellow brown and dark grey, present as cobbles and
H 7 boulders to 400 mini across, extremely to distinctly 7
2.0— weathered 7
1220 J
| 16.80 TEST PIT DISCONTINUED @ 2:20 mm |
q REFUSAL
25 =
3.05 q
3.54 _
40 4
45 7
5.0 4
5.54 4
6.0 4
65 =

This report of test pit must be read in conjunction with accompanying notes and abbreviations. It has been prepared for geotechnical
purposes only, without attempt to assess possible contamination. Any references to potential contamination are for information o
and do not necessarily indicate the presence or absence of soil or groundwater contamination,

 

nk
AP GINT FN. FO1e
RL2

 

 

Page 44

d

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4

3

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a

5

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5 oI

RTI 11/055 Folio B417

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[Associates
SHEET: 4 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development - SURFACE RL: 14m DATUM: AHD71 DRILLER:
LOCATION: = Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 9/10/03
JOB NO: 03632248 HOLE DIA: 100 mm_ HOLE DEPTH: 0.70m CHECKED: A-tp DATE: 24 fanfo3
Drilling Sampling Field Material Description
Sus ° = z
oY a 3 w |2 DCP TEST (AS1289.6.3.2)
Slt o| ag SAMPLEOR {E/2 | & SOIL / ROCK MATERIAL DESCRIPTION Sloe Blows per 100 mm
2 ia] | Es FIELDTEST |8]z | 3 Bae
Zo a o oO B|zz
b [eg] 5 | BE oa 88/8 giege of 7
0.0706 TSP] SAND
7 | fine to medium grained, light grey, trace of root matter to 7
q 03m 4
$ ] ra ]
0.5— 4
‘10.70 | DS 0.60-0.70m, fan 1
13.30 END OF [email protected] m
; UNABLE TO EXTRACT q
1.0— a
156-4 Refusal “
20-4 a
2.5 4
3.0 4
2 3.5 4
g 4 4
Z| 4 4
8 y o
§ 4.0 : 4
8 wd J
5 4 4
zg a 4
Z| 45 4
% 4 4
a 4 4
3 4 4
3 4 4
§ 5.04 4
g | 1
4 | ]
a 5.5 —
8
c ie | 4
S 4 4
f 4 4
3 6.0 4
5 4 4
gy 47 4
2 4 4
d 71 4
2 6.5 -
2 4 4
8 4 4
Wi
§ 4 4
s 4 | 1
3 This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for.
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. ey

 

 

 

Page 45

RTI 11/055 Folio B418

a)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[_ : TP6
SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan MACHINE: 1.5 Tonne Excavator
PROJECT: Housing Development SURFACE RL: 14m DATUM: AHD71 CONTRACTOR: Bebbington
LOCATION: — Attunga Heights PIT DEPTH: 1.20m LOGGED: ACD DATE: 16/10/03
JOB NO: 03632248 BUCKET TYPE: 350 mm toothed CHECKED: dew DATE: 247 5103
[" Excavation Sampling Field Material Description
é3 g 8 w [2 STRUCTURE AND
bo oc a2 wa
8 Es «| oe SAMPLER ele | 5 SOIL / ROCK MATERIAL DESCRIPTION 2 lee ADDITIONAL
E Sate] & g 7 8 30/9 6/29) OBSERVATIONS
= sel | SE [or ZoS| 8 2 [88
BY] OO 00 TSP] SAND
7 z fine to medium grained, white to light grey, contains some 7
g 7 foots to 0.4 m depth q
- L{? oso} =| 7
5 os %° contains some metasandstone and diorite gravel, cobble O | >
5 z wT and boulders to 300 mm across, becoming light grey YT
BR 4
[" | Is 0.80 7
9 ‘J 13.20 Mixture of SOIL (~30%) and ROCK (~70%) Colluvium
5 SOIL is: SM Silly SAND 8 7
H] 9 | 10-7 fine to medium grained, grey =la 7
ma 6 1 120 ROCK is: XW DIORITE 7
} 72.80 low to medium strength, brown and dark grey) present a 4
. 4 subangular to subrounded gravel and cobbles fo 200 mi 7
1 ICfOSS 4
—/ 15 TEST PIT [email protected] m 4
, 4 REFUSAL ON INTERLOCKING M-H STRENGTH 4
4 DIORITE COBBLES AND BOULDERS (POSSIBLY 4
4 RESIDUAL) 4
2.0 4
25 oe
30 4
LL q 4
z 3.5 a
g 4 4
[ : | |
& J J
8 J 4
~ § 405] 7
gs 4 4
Lig 1 1
2 7 J
3 484 4
a 4 4
ri
; 5 7 7
§ 5.04 4
os a ] 4
4 4
& 5.56 com
9 4 4
~E ] 7
. & | 4
a £ 4 4
Z 6.0 7
L g | 1
‘
z| 6.5 +
| 4 4
3 4 4
z 4 4
8
= | 4
specced baw dace teen ee rr ne Lt bm me +
+ 3 This report of test pit must be read in conjunction with accompanying notes and abbreviations. It has been prepared for geotechnical
purposes only, without attempt to assess possible contamination. Any references to potential contamination are for information only
and do not necessarily indicate the presence or absence of soil or groundwater contamination. AP gINT FN. Fore

 

 

 

Page 46

 

GAPS_1_MDORE.GLB FULL PAGE JA2002\0THER OFFICES\03632248\03832248BHDCP.GPJ GAPS_1.GDT 21/10/2003 10:21:18 AM

=
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on

RTI 11/055 Folio B419

 

Beater, REPORT OF BOREHOLE: BH7
es

 

 

 

 

 

 

 

SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development SURFACE RL: 20.6m DATUM: AHD71 DRILLER:
LOCATION: Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 9/10/03
JOB NO: 03632248 HOLE DIA: 100 mm HOLE DEPTH: 0.80 m CHECKED: Aco DATE: 24 ((ofo3
Drilling Sampling Field Materia! Description
Zz Ped
28 a 3 y 2 DCP TEST (AS1289.6.3.2)
Slf4 e |] oe SAMPLEOR [ayo | SOIL / ROCK MATERIAL DESCRIPTION Shee Blows per 100 mm
zeae) ES 8/809 2195
2 lee) S| BE a #1898 eigen fe
9.0-T 7056 TSP] SAND
4 fine to medium grained, light grey, trace of root matter to 7
7 0.2m 1
$ 1 a> 1
05 4
"|_0.20 | DS 0,70-0.80m ous 1
| 19:70 END OF [email protected] 4
10-] UNABLE TO EXTRACT J
15 4
2.0 4
25 4
3.0 4
3.6 |
4.04
45 4
5.0 4
5.5 4
6.0 -
65 4
Ltt ty. Ld i | __d_d ks

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination, Any references to potential contamination are for
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. at 1p

 

 

Page 47

rt

 

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Po eo TPS en

RTI 11/055 Folio B420

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Bice...
SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG: Hand Auger
PROJECT: Housing Development SURFACE RL: 20.5m DATUM: AHD71 DRILLER:
LOCATION: — Attunga Heights INCLINATION: -90° LOGGED: PGH DATE: 16/10/03
JOB NO: 03632248 HOLE DIA: mm HOLE DEPTH: 2.80m CHECKED: DATE: Z1f10f 03
Drilling Sampling Field Material Description
Su a = 3
Eo wy 3 w a DCP TEST (AS1289.6.3.2)
Slee «| xe Finpresr [|e | SOIL / ROCK MATERIAL DESCRIPTION Bae Blows per 100 mm
FlZole| ag S| solo 2122
2 BE] S| Be PR [4 &S 8 Sa a Pp Pp 8
9.0~T 70350 SP]SAND
fine to medium grained, light grey, trace of root matter to 1
7 0.2m |
0.5—- om
4 4
10 4
4 = 4
4 a 4
sx 4 4
=x
1.6 4
2.0- DS 2.00-2.10m 7
2200) 2 7 Pty Lo a ge 7
718.30 becoming orange. brown 4
2.5—|-2.50_| DS 2.40-2.50m J
wr] 8.09 Cl | Sandy CLAY 4
CH] medium tovhigh plasticity, light brown, orange brown, fing =
‘| 2,80 | DS 2.70-2,80m to mediuin grained Sand 7
17.70 END OF BOREHOLE @ 280m J
REFUSAL 7
3.0 ~
3 3.5— 4
3 1 1
3 7 4
g J 4
= 4.0 4
3 “J 4
5 4 4
9 4 4
2 7 4
9 454 4
g 4 4
a 4 4
3 4 4
z 1
§ 5.0 4
8 4 +
FH 4 4
8 1 4
E 55 4
9 4 4
i
a 4
f 4 |
Q' 7 4
3 6.0 |
5 4 4
y! 4 4
z 4 4
di 7 4
2 65— 4
| 4 4
8 4 4
@ 4 4
8
= 7 4
“tet —bya~t —-b RH 4 4
&. This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
8 geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. roth

   

 

 

 

 

 

 

 

Page 48

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GAPS_t, MOORE.GLB FULL PAGE J\2003}0THER OFFICESW3632248\03632248BHDCP.GPJ GAPS_1,GDT 21/10/2003 10:21:23 AM

RTI 11/055 Folio B421

 

 

REPORT OF BOREHOLE: BH8

 

 

 

 

 

 

 

 

 

 

 

 

 

SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan DRILL RIG; Hand Auger
PROJECT: Housing Development SURFACE RL: 23m DATUM: AHD71 DRILLER:
LOCATION: Attunga Heights INCLINATION; -90° LOGGED: PGH DATE: 9/10/03
JOB NO: 03632248 HOLE DIA: 100 mm HOLE DEPTH: 0.70m CHECKED: AtDd DATE: Zt tofoz}
Drilting Sampling Field Material Description
Su 9 5 3
eg w 3 wie DCP TEST (AS1289.6.3.2)
Sls al ag SAMPLE OR 8/2 | SOIL / ROCK MATERIAL DESCRIPTION Falta Blows per 100 mm
bees | Be 8183/3 ggzo os 4 5 2
2 Be) | BE Part 2|53| 8 2|88 pi 2
9.03550 TSP] SAND
71 Q fine to medium grained, light grey, trace of root matter to 7
1 0.2m 4
s 4 a} 5 ]
0.5 a
‘1.a70 | DS.0.60-0.70m fe 1
22.30 END OF [email protected]
7 UNABLE TO EXTRACT 1
1.0~ |
1.5 4
20-4 4
25 4
3.0—-] 4
3.54 4
4.0— 4
45-4 4
5.0 a
5.5— 4
6.0 4
654 4
pte t ily, —~L______ Se Pet LL

 

 

 

 

 

 

 

 

 

This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are for
information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. Fore

 

 

 

 

 

 

 

 

 

Page 49

RTI 11/055 Folio B422

 

 

 

 

 

 

 

 

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foe es
SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan MACHINE: 1.5 Tonne Excavator
PROJECT: Housing Development SURFACE RL: 22m DATUM: AHD71 CONTRACTOR: Bebbington
LOCATION: — Attunga Heights PIT DEPTH: 2.30 m LOGGED: ACD DATE: 16/10/03
JOB NO: 03632248 BUCKET TYPE: 350 mm toothed CHECKED: Aw DATE: 21(10)03
Excavation Sampling Field Material Description
ag g 3 g
2 © iG STRUCTURE AND
8 ge el oe eMBLE OR [ag 5 SOIL / ROCK MATERIAL DESCRIPTION B ee ADDITIONAL
E a2 z & 2 cere 8 So o 2/29) OBSERVATIONS
= lie] S| o£ oR 7/59) 3 = (88
9.0—7 2200 TSP]SAND
q fine to medium grained, light grey, trace of roots to 1.5 mi 7
a} 4 |
r
3 0.5 0.60 7
oO 21.40 becoming white, light grey
5 = 4
gs; | a |
fi 7 4
10 4
| 4 = :
Bleie) 4 3 4
2
3 4 4
=
oO 7 4
15-4 L 4 -
4 = 4
2.0 =
1 230 7
| 19.70 TEST PIT [email protected]'m
254 LIMIT REACH OF MACHINE J
30 4
z 3.5 -
8 J
s 4.0— 4
ag oan 4
5 4 4
x 4 4
3 45—~ 4
g 4 4
a 4 4
a 4 4
e 4 4
§ 5.04 4
2 a
§ 4 4
s 4 4
8 5.54 |
2 4 4
fe
6 4 4
a 4 4
3 60 4
8 4 J
y "| 4
= J 4
2 65— 4
q 7 4
@ 4 4
@ 4 4
8 4 4
=,
a} J. Let» a 4
g This report of test pit must be read in conjunction with accompanying notes and abbreviations, It has been prepared for geotechnical
9 purposes only, without attempt to assess possible contamination. Any references to potential contamination are for information only
and do not necessarily indicate the presence or absence of soil or groundwater contamination. P giNT FN. aie

 

 

Page 50

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GAPS_1_MDORE.GLB FULL PAGE JA2002OTHER OFFICES\03632248102632248BHDCP.GPS GAPS_1.GDT 21/10/2003 10:21:36 AM

‘ooo

RTI 11/055 Folio B423

 

 
 
  

 

PASSociat

REPORT OF TEST PIT: TP9

 

 

 

 

 

 

 

 

 

 

 

 

 

1]

 

 

 

 

 

 

 

This report of test pit must be read in conjunction with accompanying notes and abbreviations. It has been prepared for geotechnical
Purposes only, without attempt to assess possible contamination. Any references to potential contamination are for information o1
and do not necessarily indicate the presence or absence of soil or groundwater contamination.

 

 

 

 

SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan MACHINE: 1.5 Tonne Excavator
PROJECT: Housing Development SURFACE RL: 25m DATUM: AHD71 CONTRACTOR: Bebbington
LOCATION: Attunga Heights PIT DEPTH: 1.20m LOGGED: ACD DATE: 16/10/03
JOB NO: 03632248 BUCKET TYPE: 350 mm toothed CHECKED: At DATE: 2ifrojo3
Excavation Sampling Field Material Description
>
Zu a = 3°
soa @ 8 ws STRUCTURE AND
gle g| oe SAMPLEOR Jue 1 & SOIL / ROCK MATERIAL DESCRIPTION Slee ADDITIONAL
= |<2 Es Bl eo 2183 OBSERVATIONS
G (Se) | &S |oeery 2) 28/3 9 6a
= jim o£ | RL 2} oS| 3 =|86
2] 0.077556 CI] Sandy CLAY Coltuviurn
w medium plasticity, dark grey, fine to medium grained ~ 7
L $ DS 0,20-0.30m sand, some roots, some cobbles and boulders of diorite tba | ? 7
a | 040 700 mm across 7
[15 os] 4 Silly CLAY 7
5 2 nd high plasticity, yellow brown, light brown 7
° 1 USO 0.60-0.80m « 7
™ 1 eo =| |
10-1 DS 0.90-1.00m ae J
: PP = 400 kPa a
| 1.20 | BDS 1.00-1.20m = 7
“| 23.80 TEST PIT [email protected] m 7
REFUSAL ON HIGH STRENGTH DIORITE (PROBABLY 7
7 BOULDERS) 7
15 4
20-4 4
2.5-— 4
3.0 4
3.64 4
4.0 4
4.5 4
5.05 4
5.5 4
6.0 4
6.6—~ 4
pit tilyet —L_____-l aot 1 fod 4

 

 

 

 

Ni}
dap gINT FN. Ri2|
2

 

Page 51

my rtd oo

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RTI 11/055 Folio B424

 

 

 

 

 

 

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Brote.
SHEET: 1 OF 1
CLIENT: Mr Phillip Harding POSITION: Refer to Site Plan MACHINE: 1.5 Tonne Excavator
PROJECT: Housing Development SURFACE RL: 16.5m DATUM: AHD71 CONTRACTOR: Bebbington
LOCATION: _— Attunga Heights PIT DEPTH: 1.70m LOGGED: ACD DATE: 16/10/03
JOB NO: 03632248 BUCKET TYPE: 350 mm toothed CHECKED: Atup DATE: 2\ftojo3,
Excavation Sampling Field Materiat Description
>
zu a 3 &
a9 w g wile STRUCTURE AND
8(Ezla| oe SAMPLE QR |wio |e SOIL / ROCK MATERIAL DESCRIPTION Sloe ADDITIONAL
z 48 # E g pepre 8 Se @ @ |Bg) OBSERVATIONS
= Gr] =| ae [ee “Z(oS) 3 2 188
9.07650 ‘SM Silly SAND Colluvium 1
fine to medium grained, dark grey, contains some diorite Q
L 4 gravel and cobbles to 200 mm across = 7
| | a | 040 -— 1
Zl os 16.10 Silty SAND Slightly Cemented _
a " BDS 0.50-0.70m fine to medium grained, grey and brown, orange brown,
8 1 trace of gravel 4
. 4 4
2 4 z 4
m/e 4 o 4
wy _| 4
g| 17> DS 1.00-1.10m :
a
z 4 4
a} | J
| |e 1.40 . = J
8 16 76.10 H~SJ CL] Sandy CLAY a 4
H " —~ low plasticity, grey and brownyorange brown, fine to g
1 470 fn] medium grained sand, contains some high strength 7
14.80 diorite cobbles and boulders.up to 600 mm across |
7 TEST PIT [email protected] m 7
7 REFUSAL ON HIGH STRENGTH DIORITE (PROBABLY 7
2.0 BOULDERS) +
2.5— 4
3.0 4
z 3.544 4
g 4 4
g 4 4
g J 4
= 40 4
3 “ A
5 4 4
o
z| 1 4
2 7 4
8 45-] 4
z 4 4
S|.
5 4 4
5] 4 4
3 J J
q 5,04 4
Z J z
4 1 4
a 55 4
9 4 4
& 4 J
& 4
5 4
g 6.0— a
5 4 4
g 7 4
Z 1 J
2 654 J
a 4 4
& 4 4
@ 4 4
8 4 4
=
spit—L—lbyet —-L———_~_——_4 tote a |
3 This report of test pit must be read in conjunction with accompanying notes and abbrevialions. It has been prepared for geotechnical
purposes only, without attempt to assess possible contamination. Any references to potential contamination are for information only
and do not necessarily indicate the presence or absence of soil or groundwater contamination. AP gINT FN. RU]

 

 

Page 52

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RTI 11/055 Folio B425

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

~ 44-
fates REPORT OF BOREHOLE: GA11
CLIENT: LEIGHTON PROPERTIES COORDS 509126 mE 7080896 mN SHEET: 1 OF 1
PROJECT: BAYVIEW SURFACE RL: m DATUM: AHD DRILL RIG: HYDRAPOWER SCOUT
LOCATION: NOOSA INCLINATION: -90° LOGGED: BR DATE: 10/2/01
JOB NO: 00632103 CHECKED: DATE: 22fof of
Drilting Sampling Field Material Description " -
z >
Su a = 1S
eg g 3 wi STRUCTURE AND
8lFzle| oe SAMPLER ule 5 SOIL / ROCK MATERIAL DESCRIPTION 5 [oe ADDITIONAL
& ee) BY EE leon EAS & leg OBSERVATIONS
= [Hel =| SE | Re 2169/3 $ |88
9 Pas] GC] CLAYEY GRAVEL
7 7 4 Gravel and cobble size rock fragments in a clayey =]. 4
4 2 matrix
0.50. . dayey matrix, medium plasticity, red brown, moist, 7
4 stiff = 4
4 . possible fill 8
CLAY . | > | 4
14 SPT Medium to high plasticity, mottled brown and grey, 4
4 7,00 - 1.45 m moist, very stiff to hard d
245 Neo . some sand with depth
g 4 4
2 |
4 US50 4
2.50 - 2.90 m
12.90 7
3-4 SPT SANDSTONE 4
wz 3.17 [2.90 -3.09 m Extremely low strength, mottled brown
_ 7 13, 21/35 mm End of [email protected] m 7
4 (T/C Auger Bit Refusal) 4
44 4
4 4
5 4
a 4 4
= 6— +
6 4 4
| | | 4
5 J 4
5 4 |
g| -
g J 4
8 J 4
i am ‘ 1
s J \ 4
o
5 4 4
; “4 1
z 4
5 4
a 7 4
é 4
S 4
2 J 4
s 4
getty t H+ Hts —~————-—-—---—-~—————? a
@ This report of borehole must be read in conjunction with accompanying notes and abbreviations. It has been prepared for
Z| Geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are No.9
for information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP Form RL 5

 

 

 

 

 

 

 

Page 53

 

we

rs

 

 

GAPS_1.GL6 FULL PAGE JABRISBANE.OS\GEOTECH.0303632045102_GINTW03622045BH.GPJ GAP5_1.GDT 30/04/2003 8:58:12 AM

RTI 11/055 Folio B426

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHEET: 1 OF 1
CLIENT: John Holland Pty Ltd COORDS: 803.991 mE 1663.247mN LOCAL DRILL RIG: Hydrapower Scout
PROJECT: Bayview SURFACE RL: 28.887 m DATUM: AHD DRILLER:
LOCATION: Noosa INCLINATION: -90° LOGGED: PGH DATE: 19/3/03
JOB NO: 03632045 HOLE DIA: 100 mm HOLE DEPTH: 7.50 m CHECKED: “JDL DATE: $/o2
Drilling Sampling Field Material Description
z >
ow Qa — O
Eg @ z w la STRUCTURE AND
8 Bs «lag eer 1g & SOIL / ROCK MATERIAL DESCRIPTION 2 [be ADDITIONAL
E ig # E £ — 9 o 4 |g OBSERVATIONS
= #2] S| SE | Re @ 8 2 |88
ie oc CIT Silty CLAY
4 Medium plasticity, light brown, trace sand 4
1-4 =
4 | a 4
244 +
a 0 q
26.39 trace light grey 4
3.00
3135.89 7
44 4
J g |
6 4
15.50 4
23.39 1) Sandy CLAY q
Medium plasticity, light greyAight brown J
es -|
6.20. J
22.69 SANDSTONE
74 a
77.50 * 4
| 21.39 END OF [email protected] m 4
Refusal to rotary blade bit
| GROUNDWATER NOT OBSERVED . 7
8— \ Ty
9 4
pHeHtolygt tt LL J~ toe —|
This report of borehole must be read in conjunction wilh accompanying notes and abbreviations. It has been prepared for
geotechnical purposes only, without attempt to assess possible contamination. Any references to potential contamination are
for information only and do not necessarily indicate the presence or absence of soil or groundwater contamination. GAP gINT FN. rea

 

 

Page 54

 

 

 

RTI

 

 

11/055 Folio B427
EXPLANATION OF NOTES, ABBREVIATIONS & TERMS
p Golder, USED ON BOREHOLE AND TEST PIT REPORTS
DRILLING/EXCAVATION METHOD
AS* Auger Screwing : RD Rotary blade or drag bit HQ Diamond Core - 63 mm
AD* Auger Drilling RT Rotary Tricone bit NMLC Diamond Core - 52 mm
“vv V-Bit RAB Rotary Air Blast NQ Diamond Core - 47 mm
‘T TC-Bit, e.g. ADT RC Reverse Circulation BH Tractor Mounted Backhoe
HA Hand Auger PT Push Tube EX Tracked Hydraulic Excavator
DTC _Diatube Coring CT Cable Tool Rig EE Existing Excavation
WB Washbore or Bailer JET Jetting HAND Excavated by Hand Methods

 

PENETRATION/EXCAVATION RESISTANCE
L Low resistance. Rapid penetration possible with little effort from the equipment used.
M Medium resistance. Excavation/possible at an acceptable rate with moderate effort from the equipment used.

H High resistance to penetration/excavation. Further penetration is possible at a slow rate and requires significant
effort from the equipment.

R Refusal or Practical Refusal. No further progress possible without the risk of damage ‘or unacceptable wear to
the digging implement or machine.

These assessments are subjective and are dependent on many factors including the equipment power, weight, condition
of excavation or drilling tools, and the experience of the operator.

 

WATER
ww Water level at date shown <j Partial water loss
Cc Water inflow <~@» .  Complete water loss
GROUNDWATER NOT The observation of groundwater, whether present or not, was not possible due to drilling
OBSERVED water, surface seepage or cave in of the borehole/test pit.

GROUNDWATER NOT The borehole/test pit was dry soon after excavation. However, groundwater could be
ENCOUNTERED present in less permeable strata. inflow may have been observed had the borehole/test pit
been left open fora longer period,

 

 

 

SAMPLING AND TESTING

SPT Standard Penetration Test to AS1289.6.3.1-1993

4,7,11  N=18 4,7;11 = Blows per150mm. N = Blows per 300mm penetration following 150mm seating

30/80mm Where practical refusal occurs, the blows and penetration for that interval are reported

RW Penetration occurred under the rod weight only ©

HW Penetration ocurred under the hammer and rod weight only

HB Hammer double-bouncing on anvil

OS Disturbed\sample

BDS Bulk disturbed sample

G Gas Sample

Ww Waiter Sample

FP Field permeability test over section noted

FV Field vane shear test expressed as uncorrected shear strength s,

PID Photoionisation Detector reading in ppm

PM Pressuremeter test over section noted

PP Pocket penetrometer test expressed as instrument reading in kPa

U63 Thin walled tube sample - number indicates nominal sampte diameter in millimetres

Ranking of Visually Observable Contamination and Odour (for specific soil contamination assessment projects)
R=0 No visible evidence of contamination R=A No non-natural odours identified
R=1 Slight evidence of visible contamination R=B Slight non-natural odours identified
R=2 Visible contamination R=C Moderate non-natural odours identified
R=3 Significant visible contamination R=D Strong non-natural odours identified

 

 

 

 

 

ROCK CORE RECOVERY

TCR = Total Core Recovery (%) SCR = Solid Core Recovery (%) RQD = Rock Quality Designation (%)
_ Length of core recovered 100 > Length of cylindrical core recovered 100 _ > Axial fengths of core > 100 mm «100
Length of core run * Length of core run * 7 Length of core run

 

 

GAP Form No. 6
RL3

Page 55

ma ms

on om)

cs oo oes"

x .d

a

 

RTI 11/055 Folio B428

 

 

METHOD OF SOIL DESCRIPTION
USED ON BOREHOLE AND TEST PIT REPORTS

 

GRAPHIC LOG - TYPICAL SYMBOLS FOR SOILS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FILL CLAY (CL, Cl OR CH)
Ko =o 2 ©4 ORGANIC SOILS
0 a
22 24 GRAVEL (GP OR GW) I. &« | OL OR OHOR Pt)
=< sou
Sw) SAND (SP OR SW) o(\¢| COBBLES OR BOULDERS
& * « “I SILT (ML OR MH)

 

 

Combinations of these basic symbols may be used to indicate mixed materials such as sandy clay.

 

CLASSIFICATION AND INFERRED STRATIGRAPHY

Soil and Rock ts classified and described in Reports of Boreholes and Test Pits using the preferred method given in
AS1726 - 1993, Appendix A. The material properties are assessed in the field by visual/tactile methods.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Particle Size Plasticity Properties
Major Division |Sub Division |Particle Size 40
BOULDERS > 200 mm cH
cl High plasticity
COBBLES 63 to 200 mm Medium clay
= vm
Coarse 20 to 63 mm g Low peau ¥
GRAVEL Medium 6.0 to 20 mm 5 ony
Fine 2.0 to 6.0 mm . 20 High taut limit
hod sit
Coarse 0.6 to 2.0 mm 3
SAND Medium 0.2 to 0.6 mm a 10 Medium gula
Fine 0.075 to 0.2 mm CLIFIL Ctay/Sit limit sit
ML - Low liquid limit silt
SILT 0.002 to 0.075 rim 0
0 40 20 30 40 50 60 70 80
CLAY < 0.99 2m Liquid Limit (%)
MOISTURE CONDITION . AS1726 - 1993
Symbol Term Description
D Dry Sands and gravels are free flowing. Clays & Silts may be brittle or friable and powdery.
M Moist Soils are darker than in the dry condition & may feel cool. Sands and gravels tend to cohere.
W Wet Soils exude free water. Sands and gravels tend to cohere.
CONSISTENCY AND DENSITY AS1726 - 1993
Symbol Term Undrained Shear Symbol Term Density Index % SPT "N” #
Strength
VS Very Soft 0 to 12 kPa VL Very Loose Less than 15 0to4
Soft 12 to 25 kPa L Loose 15 to 35 4to 10
Firm 25 to 50 kPa MD | Medium Dense 35 to 65 10 to 30
St Stiff 50 to 100 kPa D Dense 65 to 85 30 to 50
vst Very Stiff 100 to 200 kPa VD Very Dense above 85 Above 50
H Hard above 200 kPa

 

 

 

 

 

 

 

 

 

 

# SPT correlations are not stated in AS1726 — 1993, and may be subject to corrections for overburden pressure and
equipment type.

In the absence of test results, consistency and density may be assessed from correlations with the observed behaviour of
the material.

 

 

GAP Fonn No, 5
RLA

 

Page 56

ma FY

 

 

RTI 11/055 Folio B429

 

TERMS FOR ROCK MATERIAL STRENGTH & WEATHERING
AND ABBREVIATIONS FOR DEFECT DESCRIPTIONS

Golder
Associates

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STRENGTH
Point Load
Symbol Term Index, Is(59) Field Guide
(MPa)
EL Extremely < 0.03 Easily remoulded by hand to a material with soil properties.
Low
VL Very 0.03 to 0.1 | Material crumbles under firm blows with sharp end of pick; can be peeled
Low with knife; too hard to cut a triaxial sample by hand. Pieces up to 30 mm
can be broken by finger pressure.
L Low 0.1 to 0.3. | Easily scored with a knife; indentations 1 mm to 3 mm show in the specimen ,
with firm blows of pick point; has dull sound under hammer. A piece of core
150 mm tong by 50 mm diameter may be broken by hand. Sharp edges of|
core may be friable and break during handling.
M Medium 0.3 to 1 Readily scored with a knife; a piece of core 150 mm long by 50 mm diameter
, ; can be broken by hand with difficulty.
H High - 1to3 A piece of core 150 mm long by’50 mm diametemcannot be broken by hand
but can be broken with pick witha single firm blow;rock rings under hammer.
VH Very 3 to 10 Hand specimen breaks with pick after more-than. one blow; rock rings under
High hammer.
EH Extremely* { © >10°. «| Specimen requires’ many blows with.geological pick to.break through intact!
High material; rock ringsunder hammer.
ROCK STRENGTH TEST RESULTS
v Point Load Strength Index, IScsoy Axial test (MPa)
4 Point Load Strength Index, ls¢sq), Diametral test (MPa)
ROCK MATERIAL WEATHERING
Symbol! Term Field Guide
Residual Soil developed, on extremely weathered rock; the mass structure and
RS es “substance fabric-are no longer evident; there is a large change in volume
Soil but the soil has not been significantly transported.
EW Extremely Rock is weathered to such an extent that it has soil properties - i.e. it either
Weathered disintegrates or can be remoulded, in water.
HW Rock strength usually changed by weathering. The rock may be highly
Distinctly discofoured, usually by iron staining. Porosity may be increased by leaching,
DW MW Weathered or may be decreased due to deposition of weathering products in pores.
sw Slightly -Rock is slightly discoloured but shows little or no change of strength relative
Weathered to fresh rock.
FR Fresh Rock shows no sign of decomposition or staining.
ABBREVIATIONS FOR DEFECT TYPES AND DESCRIPTIONS
Defect Type Coating or Infilling . Roughness
B Bedding parting Cn Clean Sl Slickensided
x Foliation Sn Stain sm Smooth
L Cleavage Vr Veneer Ro Rough
J Joint Ct Coating
SZ Sheared zone (Fault) Planarity Vertical Boreholes — The dip
cs Crushed seam (Fault) Pl Planar (inclination from horizontal) of the defect
DS Decomposed seam Un Undulating is given.
is Infilled seam St Stepped Inclined Borehofes — The inclination is
Ss Schistocity measured as the acute angle to the
Vv Vein core axis.

 

 

 

 

GAP Form No. 7
RLA

Page 57

 

—
u i

r

 

RTI 11/055 Folio B430

Appendix B
GeotechnicahLaboratory Test Results

Golder Associates

Page 58

 

Lot OP]

RTI 11/055 Folio B431

Geotechnical Testing Authority

11 Production Ave
Bokarina Qld 4575

PO Box 2
Buddina Qld 4575

Telephone: (07) 5493 1733
Facsimile: (07) 5493 6019
Email: [email protected]

 

Quality of Materials Report

 

 

Golder Associates

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J} Client: Report Number: G3005 - 130
| JJob Number: G3005 Report Date: 28/10/2003
Project: Laboratory Testing ‘Order Number:
r|Location Project 03632248, Attunga Heights Page 1 of 1
Lab No: 52846 Sample ID: Sample Location
~IDate Sampled: 16/10/2003 Item No: Test Pit 9
| Date Tested: 24/10/2003 Depth 0.9m
| Sampled By: Client
Sample Method:
{Material Source: Site
[ For Use As: Lot Number:
~ VRemarks: Spec\Number:
~ A.S. Sieve Sizes Specification Percent Specification
[| Minimum Passing Maximum
Test Method: AS1289.3.6.1
75,00 mm =
[ 53.00 mm - \
37.50 mm -
26.50 mm ba
19.00 mm -
[| 13.2 mm :
9.50 mm :
6.70 mm .
[ 4.75 mm -
2.36.mm ~
1.18 min .
[| 0.600 mm -
0.425 roam :
™ 0.300 mm .
. 0.150 min -
a 0.075 rm 88
‘Atterberg Tests Test Method Specification Result Specification
- Minimum Maximum
Liquid: Limit (%) AS 1289.3.1.1 54
| ‘Plastic Limit (%) AS1289.3.2.1 31
| jPlasticity Index AS1289.3.3.1 23
Linear Shrinkage (%) AS1289,3.4.1 13.5
[ 'P.I.x % Passing 0.425 mm :
JL.S. x % Passing 0.425 mm
[Ratio of % Passing (0.075 / 0.425)
APPROVED SIGNATORY Form Number:
This Laboratory is accredited by the National -
| | Association of Testing Authorities, Australia. The NAQ \ 5}
| test(s) reported herein have been performed in REP QUAL-1
: ~y accordance with its terms of accreditation. This Mel Burnett
Lj document shall not be reproduced except in full. Nata Accred. No: 1554

 

 

 

 

[email protected]. Accredited Soil Laboratory -@* Roadworks & Subdivision Testina *@* Agareaate & Quarry Product Testina *@+ Earthworks Sunarvision @¢

 

 

Page 59

RTI 11/055 Folio B432

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

- 11 Production Ave
982 979 Bokarina Qld 4575
- 074982 979 PO Box 2
Buddina Qid 4575
~ Telephone: (07) 5493 1733
4 , 7 . . Facsimile: (07) 5493 6019
Geotechnical Testing Authority Email: [email protected]
— -
e e
: Quality of Materials Report
rictient: Golder Associates Report Number: G3005- 131
| jJYob Number: G3005 Report Date: 28/10/2003
Project: Laboratory Testing Order Number:
Location Project 03632248,Attunga Heights Page 1 of1
Lab No: 52847 Sample ID: Sample Location
~|Date Sampled: 16/10/2003 Item No: Test Pit 9 ,
p7|Date Tested: 24/10/2003 Depth 0.2m
t Sampled By: Client
Sample Method:
Material Source: Site
l For Use As: Lot Number:
Remarks: Spec Number:
~~ A.S, Sieve Sizes Specification Percent Specification
[| , Minimum Passing Maximum
Test Method: AS1289.3.6.1
75.00 mm -
[ j 53.00 mm *
37.50 mm .
26.50 mm =
19.00 mm =
[ 13.2 mm :
9.50 mm -
! 6.70 mm. =
[ 4.75 mn .
2.36 mm -
1 1.18 mre .
[ 0.600 mm -
0.425 mm -
~ 0.300 mm ~
| 0.150.min -
Ly 0.075 mini 57
‘Atterberg Tests Test Method Specification Result Specification
L Minimum Maximum
Liquid Limit (%) AS 1289.3.1.1 46.
| ‘Plastic Limit (%) AS1289.3.2.1 29
Plasticity Index AS1289.3.3.1 17
Linear Shrinkage (%) AS1289,3.4.1 12.5
[ Pl. x % Passing 0.425 mm
| LS x % Passing 0.425 mm
[Ratio of % Passing (0.075 / 0.425)
- APPROVED SIGNATORY Form Number:
L This Laboratory is accredited by the National
~\ | Association of Testing Authorities, Australia. The
tH test(s) reported herein have been performed in REP QUAL-1
~, accordance with its terms of accreditation. This Mel Burnett
Li ® document shall not be reproduced except in full. Nata Accred. No: 1551
=

 

°@ N.A.T.A. Accredited Soil Laboratory :@+ Roadworks & Subdivision Testina -@+ Acareaate & Quarry Proditct Tastinn +@* Farthwarke Siinaniicinn @

 

Page 60

 

 

 

'4 982 979
074 982 979

Geotechnical Testing Authority

    

11 Production Ave
Bokarina Qid 4575

PO Box 2
Buddina Qid 4575

Telephone: (07) 5493 1733
Facsimile: (07) 5493 6019
Email: [email protected]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

i Particle Size Distribution Report
| Ctient: Golder Associates Report Number, G3005 - 132
"|Job Number; 63005 Report Date: 28/10/2003
Project: Laboratory Testing Order Number: .
| Itocation _ Project 03632248,Attunga Heights Page 1 of 1
__|Lab No: 52853 Sample ID: Test Pit {ample Location
Date Sampled: 16/10/2003 Item No: Depth 0.8 - Derm
“|Date Tested: 27/10/2003
[ Sampled By: Client
" (Sample Method:
~(Material Source: Site
For Use As: Lot/Number:
“| Remarks: Spec Number:
8 AS. Sieve Sizes Specification Percent Specification
LL Minimum Passing Maximum
4 Test Method: AS1289;3.6,1
F 75,00 mm -
53.00 mm *
, 37.50 min 7
| 26.50 mri .
r 19.00 mm -
os 13.2 mm a
~ 9,50 mm 7
L 6.70. min a
4.75 mm 100
r 2.36 mm 100
L 1.18 mm ‘96:
- 0.600 mm 91
0.425 mm 85
| 0.300 mm 73
B 0.150 mm 30
+E 0.075 mm __25
| J j J J APPROVED SIGNATORY Form Number:
LU AI Association of Testing Authoriues, australia, The Yoyo
test(s) reported herein have been performed in REP PSD-1
rt m™~ accordance with its terms of accreditation. This Mel Burnett
document shall not be reproduced except in full. Nata Accred. No: 1551
-
;

 

[email protected]. Accredited Soil Laboratory *@* Roadwarks & Siibdivisinn Tactinn *@s Anaranate 8. Anarn: Dearint Trastin

 

 

Page 61

RTI 11/055 Folio B434

  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

- 11 Production Ave
Bokarina Qid 4575
rm PO Box 2
Buddina Qid 4575
~ Telephone: (07) 5493 1733
= 7 o 7 Facsimile: (07) 5493 6019
Geotechnical Testing Authority Email: [email protected]
ui e e e e e
5 Particle Size Distribution Report |
Client: Golder Associates Report Number; G3005 - 133
‘“|Job Number: G3005 Report Date: 28/10/2003
-1|Project: Laboratory Testing / Order Number: Page tof 4
| [Location Project 03632248, Attunga Heights age to
{Lab No: 52848 Sample ID: Sample Location
" - 46/40/2003 Item No : Bore 7 (a
|Date Sampled: ‘ Depth 2.4m
~|Date Tested: 24/10/2003
[ Sampled By: Client
~ Sample Method:
-|Material Source: Site
[ For Use As: Lot-Number:
Remarks: Spec Number:
[ A.S. Sieve Sizes Specification Percent Specification
Minimum Passing Maximum
Test Method: AS1289.3.6,1
[| 75,00 mm .
53.00 mm -
[ 37.50 mnt -
26.50 mm 2
19.00 min :
[: 13.2 mm *
~ 9.50 mm .
6.70 mm .
wu
4.75 mm wt
: 2.36 mm 100
5 1.48 mm 100
| 0.600 mm 98
0.425 mm 95
0,300 mm 78
l 0.450 mm 70
t 0,075 mm 6
r APPROVED SIGNATORY Form Number:
— This Laboratory is accredited by the National
i ~| Association of Testing Authorities, Australia, The 4 YN
test(s) reported herein have been performed in WN REP PSD-1
é » accordance with its terms of accreditation. This Mel Burnett
: document shall not be reproduced except in full. Nata Accred. No: 1551

 

[email protected]. Accredited Soil Laboratory «@- Roadworks & Subdivision Testing *@* Aoareaate & Quarry Product Tastina «@+ Farthwarke Stinariician @

 

Page 62

 

RTI ILT7/055° Folio B435

4 982 979
1 B 074 982 979

.’ Geotechnical Testing Authority

  

14 Production Ave
Bokarina Qld 4575

PO Box 2
Buddina Qld 4575

Telephone: (07) 5493 1733
Facsimile: (07) 5493 6019
Email: [email protected]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

|. Particle Size Distribution Report
tient: Golder Associates Report Number; G3005 - 134
[Job Number: G3005 Report Date: 28/10/2003
->|Project: oe Testing ; Order Number: Page {off
| :|Location roject 03632248,Attunga Heights
- Lab No: 52849 Sample ID: Bore 4 gp2™Ple Location
i Date Sampled: 16/10/2003 Item No: Depth 3.0m
Date Tested: 24/10/2003
. Sampled By: Client
Sample Method:
~~|Material Source: Site
[ For Use As: Lot/Number:
Remarks: Spec Number:
(| A.S, Sieve Sizes Specification Percent Specification
Minimum Passing Maximum
Test Method: AS1289:3.6.1
[| 75,00 mm ‘
53.00 mm :
[ 37.50 min :
26.50.mm *
19.00 min : .
[ 13.2 mm :
“ 9.50 mm .
'" 6.70 mim .
4.75 mm .
D 2.36 mm .
= 1.18 mm .
_ 0.600 rm 100
i 0.425 mm 99
0.300 mm 85
i 0.150 mm 6
“| 0.075 mm 2
[~ APPROVED SIGNATORY Form Number:
a This Laboratory is accredited by the National
‘| Association of Testing Authorities, Australia. The
test(s) reported herein have been performed in - , REP PSD-1
5S i accordance with its terms of accreditation. This Mel Burnett
a document shall not be reproduced except in full. Nata Accred. No: 1551
=)

 

°@ N.A.T.A. Accredited Soil Laboratory -@+ Roadworks & Subdivision Testinn +@+ Annranata 2 Onions Bradiint Tactinn ame Eathuinelin Oo

 

 

Page 63

RTI-IL/055 Folio B436

4 982 979

[ p 074 982 979

[ Geotechnical Testing Authority

  

11 Production Ave
Bokarina Qld 4575

PO Box 2
Buddina Qld 4575

Telephone: (07) 5493 1733
Facsimile: (07) 5493 6019
Email: [email protected]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[: Particle Size Distribution Report
[) Client: Golder Associates Report Number: G3005 - 135
“lJob Number; G3005 Report Date: 28/40/2003
Project: Laboratory Testing Order Number:
[’ Location Project 03632248,Attunga Heights Page 1 of 1
Lab No: 52850 Sample ID: Bore 4 Sample Location
[ Date Sampled: 09/10/2003 Item No : Depth 0.8 -0.9m
"|Date Tested: 24/10/2003
| Sampied By: Client
[ Sample Method:
. {Material Source: Site
[. For Use As: Cot Number:
Remarks: Spec Number:
(| A.S. Sieve Sizes Specification Percent Specification
Minimum Passing Maximum
Test Method: AS1289.3.6.1
{ _75.00 mm *
53.00 mm .
[ 37.50 min
. 26.50. mimi .
“ 19.00 min :
[ 43.2 mm .
9.50 mm °
6.70 mim .
en
. 4.75 mm .
[ . . 2.36 mm .
. 1.18 mm ~100
0.600 mm 100
0.425 mm 98
0.300 mm 82
[ 0.150 mm 7
{ 0.075 mm 4
[- This Laboratory is accredited by the National APPROVED SIGNATORY Form Number:
~ | Association of Testing Authorities, Australia. The
test(s) reported herein have been performed in REP PSD-1
7 ~ accordance with its terms of accreditation. This Mel Burnett :
[ document shall not be reproduced except in full. Nata Accred. No: 1551

 

 

 

 

 

rm

[email protected]. Accredited Soil Laboratorv +@* Roadworks & Subdivision Tasting «@+ Annranate & Cuarn: Pradunt Tactina ome Farthumneen Qiinandint

 

Page 64

RTI 11/055 Folio B437

‘4 982 979
= b 074 9B2 979

[* Geotechnical Testing Authority

  

11 Production Ave
Bokarina Qld 4575

PO Box 2
Buddina Qld 4575

Telephone: (07) 5493 1733
Facsimile: (07) 5493 6019
Email: [email protected]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

na e e ° e e
; Particle Size Distribution Report
I IClient: Golder Associates Report Number: G3005 - 136
Job Number: G3005 Report Date: 28/10/2003
| Project: Laboratory Testing Order Number:
1) ovat Project 03632248,Attunga Heights Page 1 of 1
| ,| Location 4 Miunga Fe'g
Lab No: 52851 Sample ID: Sample Location
i - 09/10/2003 ~—°—stem No: Bore 2
{Date Sampled: : Depth 0.5 - 0.7m
“Date Tested: 24/10/2003 ,
[ Sampled By: Client
Sample Method:
~/|Material Source: Site
[| For Use As: Lot-Number:
Remarks: Spec Number:
a A.S. Sieve Sizes Specification Percent Specification
Minimum Passing Maximum
; Test Method: AS1289,3.6,1
[ ___75.00 mm .
53.00 mm :
[ 37.50 mri .
26.50 mni *
- 19.00 mm .
[ : 13.2 mm .
~ 9.50 mm *
6.70 mm .
7
4.75 mm °
[ 2.36 mm .
1.18 mm 100
| 0.600 mm 100,
[ 0.425 mm 98
0.300 mm _ 8
[. 0.150 mm 5
{ 0.075 mm 3
[ APPROVED SIGNATORY Form Number:
This Laboratory is accredited by the National
~ Association of Testing Authorities, Australia. The
test(s) reported herein have been performed in REP PSD-1
~, accordance with its terms of accreditation. This Mei Burnett
[ document shall not be reproduced except in full. Nata Accred. No: 1551

 

 

 

 

 

 

Tc

[email protected]. Accredited Soil Laboratory *@+ Roadworks & Subdivision Testina *@* Aaareaate & Quarry Product Testina *@+ Farthwarke Stinanvician @

Page 65

RTI 11/055 Folio B438

 

11 Production Ave
Bokarina Qld 4575

PO Box 2
Buddina Qld 4575

Telephone: (07) 5493 1733
Facsimile: (07) 5493 6019
Email: [email protected]

[~ Geotechnical Testing Authority

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

s e .
, California Bearing Ratio Report
myClient: Golder Associates Report Number : G3005 - 137
| Job Number ; 63005 Report Date : 28/10/2003
Project : Laboratory Testing Order Number :
lle ocation : Project 03632248, Attunga Heights Test Method : AS1289.6.1.1
—tLab No: 52852 Sample ID: - Sample Location
,--|Date Sampled: 16/10/2003 . Test Pit 9
Date Tested: 27/10/2003 MC Method : AS 1289.2.1.1 Depth 1.0 - 1.2m
“ Sampled By: Client
f7jSample Method: =>
Material Source: Site
_-|For Use As: . Lot Numiber: -
| |Remarks: Item Number: -
@ . .
Maximum Dry Density - MDD (t/m*) : 1.49
[ Optimum Moisture Content - OMC (%) : 25.0
Compactive Effort : Standard
‘Nominated % Maximum Dry Density Compaction : 100.0
Ui ominates % Optimum Moisture Content Compaction: 100.0
Achieved Dry Density before Soak (t/m?) : 1.48
[ \Achieved Percentage of Maximum Dry Density (%)* 99
-jAchieved Moisture Content (%) : 24.6
Achieved Percentage of Optimum Moisture Content (%).: 98
[ est Condition (Soaked/Unsoaked) / Soaking Period-(Days) : Soaked / 4
Swell (%) / Surcharge (kg): 5.5 / 45 kg
™ ‘Dry Density after Soak (t/m*) : 1.40
__ Moisture Content after Soak (%) : 34.7
Density Ratio after Soak (%) : 94
{ Hea Moisture Content (%) : 29.2
Moisture Content (Top) after Penetration (%) : 41.8
Moisture Content (Remainingl) after Penetration (%) : 30.6
[ cee 2.5mm (%) : 1.0
CBR 5.0mm (%) : 0.5
‘Minimum Specified CBR Value (%) :
[ CBR Value (%) : 1.0
[soit Description: Silty Clay(CH)-high plasticity,yellow brown,fine grained sand
| APPROVED SIGNATORY Form Number:
{ This Laboratory is accredited by the National
‘| Association of Testing Authorities, Australia. The KY D>
test(s) reported herein have been performed in IREP CBR-1
” bh accordance with its terms of accreditation. This Mel Burnett
[ document shall not be reproduced except in full. Nata Accred. No: 1551

 

 

 

 

oo

°@N.A.T.A. Accredited Soil Laboratory +@* Roadworks & Subdivision Testina *@+ Annranate & Carns Prndunt Tactinn ome Carthusarke &

 

Page 66

[

RTI 11/055 Folio B439

4.982 978
B 074 982 979

Geotechnical Testing Authority

  

11 Production Ave
Bokarina Qld 4575

PO Box 2
Buddina Qld 4575

Telephone: (07) 5493 1733
Facsimile: (07) 5493 6019
Email: [email protected]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

e e .
[ California Bearing Ratio Report
Client : Golder Associates Report Number : G3005 - 138
[ Job Number ; 63005 ' Report Date : 28/10/2003
Project : Laboratory Testing Order Number :
[’ Location : Project 03632248, Attunga Heights Test Method : AS1289.6.1.1
~tLab No: 52853 Sample ID: - Sample Location
Date Sampled: 16/10/2003 Test Pit 10
[ Date Tested: 27/10/2003 MC Method : AS 1289.2.1.1 Depth 0.5 - 0.7m .
Sampled By: Client
l Sample Method: =~
| {Material Source: Site
._|For Use As: - Lot\Number: .
[ Remarks: item Number: .
Maximum Dry Density - MDD (tim?) : 1.92
[ Optimum Moisture Content - OMC (%).: 10.0
Compactive Effort : Standard
Nominated % Maximum Dry Density Compaction : 100.0
I] Nominated % Optimum Moisture Content Compaction’: 100.0
Achieved Dry Density before Soak (t/m’) : 1.94
[| Achieved Percentage of Maximum Dry Densily (%): 101
Achieved Moisture Content (%) : 10.0
_|Achieved Percentage of Optimum Moisture Content (%) : 100
| Test Condition (Soaked/Unsoaked) / Soaking Petiod(Days) : Soaked / 4
Swell (%) / Surcharge (kg): 0.5 / 4.5 kg
™4Dry Density after Soak (t/m?) : 1.94
iu Moisture Content after Soak (%) : 11.7
Density Ratio after Soak (%) : 101
[ Field Moisture Content (%) : - 6.4
{Moisture Content (Top) after Penetration (%) : . 11.3
Moisture Content (Remainingl) after Penetration (%) : 10.7
[ oR 2.5mm (%) : 9
CBR 5.0mm (%) : 14
Minimum Specified CBR Value (%) :
Fe Value (%) : _ 14
Soil Description: Silty Clayey Sand(SC)-fine to medium grained,grey brown,low to medium plastic fines
UT APPROVED SIGNATORY Form Number:
t This Laboratory is accredited by the National
‘| Association of Testing Authorities, Australia. The
test(s) reported herein have been performed in IREP CBR-1
[ ~ accordance with its terms of accreditation. This Me! Burnett
document shalt not be reproduced except in full. Nata Accred. No: 1551

 

 

 

 

 

 

[email protected]. Accredited Soil Laboratory *@* Roadworks & Subdivision Testina *@- Adarenate & Quarry Product Tastinn «@s Farthwarke Gimaniicinn me

Page 67

i

c

4

 

RTI 11/055 Folio B440

Associates

a MANSFIELD
GB Golder LABORATORY

Page | of $

1/51 Secam Street, Mansfield Qld 4122
P.O. Box 2034 Mansfield DC Qld 4122

Phone: (07) 3343 3166 Fax: (07) 3849 4705
Website: www.golder.com.au
A.B.N. 64 006 107 857

 

DIRECT SHEAR TEST

 

 

Client: = Mr Harding ~

Address : Attunga Heights, Noosa Heads
Project: Housing

Location : BH 1 (0.8 - 0.9 m)

Report No. : R5573

Job No. : 03632248
Reg'n No. : 1853/03
Senders No. :

Date Received : 20/10/03
Sampled By: Golder

 

Type of test: Saturated Consolidated Drained

Device : Wykeham Farrance Model 25 300 (Single Shear)

 

Sample type : Remoulded at approximate 70 % Density index .

 

Specimen size :60 mm X 60 mm X 27 mm

 

150

125

100

 

 

 

 

 

 

 

 

 

 

 

 

 

& 75
8
&
s
2
° 50
25
0 25 50 75 100 125 150 175 200
Normal Stress kPa
a, Normal Initial Moisture Initial Dry Inittat Consolidation Displacement | Moisture Content | Maximum Shear
Stage Stress (kPa) Content (*4) Density (t/m*) Saturation (%) at Start (%) at Failure (%) after test (%) Stress (kPa)
1 25 4.9 1.42 15 1.4 3.0 31.4 27
2 50 4.9 1.42 15 2.4 6.1 30.0 54
3 100 4.9 1.42 15 3.2 8.1 27.9 95
GOHESION 6 kPa ANGLE OF FRICTION 42 °

 

Failure Criteria : Maximum Shear Stress
Remarks :
Material Description : SAND (SP) light grey

 

Test Procedure : ASTM D3080 (thickness not measured during testing)

 

 

Prepared by We

| Checked by “3A,

 

 

This Laboratory is registered by the National Association of Testing a
Authorities, Australia. The tes{(s) reported herein have been performed ~

In accordance with the terms of registration. This document shall not be
reproduced except in full without the prior approval of the laboratory, 1446

Authorised Signatory

Golder Form Number R21] Peak Shear
RL 0 - 28/07/03

Page 68

RTI 11/055 Folio B441

DIRECT SHEAR - STRESS STRAIN CURVE

 

 

~-°100kPa- ~~

 

 

100

 

oo

 

Strain (%)

RO3.1

Checked By 4A

Prepared By Nt

Page 69

rsa C4 rs]. = mT

 

RTI 11/055 Folio B442

 

 

 

Page 2 of 4
: =~ : MANSFIELD 1/51 Secam Street, Mansfield Qld 4122
P.O. Box 2034 Mansfield DC Qld 4122
GF Golder LABORATORY Phone: (07) 3343 3166 Fax: (07) 3849 4705
7 lebsite: www.golder.com.au
Associates A.B.N. 64 006 107 857
DIRECT SHEAR TEST
Client: Mr Harding ReportNo.:  R5673
Address : Attunga Heights, Noosa Heads Job No. : 03632248
Project: Housing Reg'n No. : L1854/03
Location : BH 4a (2.0 m) Senders No. :
Date Received : 20/10/03
Sampled By: Golder

 

Type of test: Saturated Consolidated Drained

Device : Wykeham Farrance Model 25 300 (Single Shear)

 

Sample type : Remoulded at approximate 70 % Density Index

Specimen size :60 mm X 60 mm X 29 mm

 

 

150

125

100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

& 75
x
a
5
8
Po
® 60
25
0 25 50 75 100 125 150 175 200
Normal Stress kPa
Normal Initial Moisture Initial Dry Initial Consolidation Displacement Moisture Content Maximum Shear
Stage Stress (kPe) Content (%) Density (um*) Saturation (%) at Start (%) at Failure (%) after tast (%) Strass (kPa)
1 25 1.5 1.56 5 0.8 2.5 31.2 36
2 50 1.5 1.56 5 1.41 8.6 28.7 51
3 100 1.5 1.56 5 2.0 9.8 25.2 95
COHESION 1 kPa ANGLE OF FRICTION 40 °
Failure Criteria : Maximum Shear Stress
Remarks :
Material Description : SAND (SP) light brown
Test Procedure : ASTM D3080 (thickriess not measured during testing)
Prepared by Nf | Checked by 7d
This Laboratory is registered by the National Association of Testing NY]
Authorities, Ausvela. re tests) reported herein have been eeorea ~ nh 4 3
re \. ument si . .
reproduced exceptin fullwithoul ine priorapprovalofine labersteny ° 1446 Authorised Signatory........ °F 7 3 a

Golder Form Number R21 Peak Shear
RL O - 28/07/03

 

Page 70

 

—~—RTI_117055- Folio B443

DIRECT SHEAR - STRESS STRAIN CURVE

f

 

 

 

 

 

120

1

100 +-----+------h--

 

(2g) sseqg Jeeys

yo OFS bo fy) fo

Leet Fe Co CL

Strain (%)

RO3.1

3h

Checked By

Prepared By at

Page 71

“-RTI-117055 Fottio B444

ma =]

m7 eq oD es

}
4

Page 4 of #
MANSFIELD 1/51 Secam Street, Mansfield Qld 4122
LABORATORY P.O. Box 2034 Mansfield DC Qld 4.122

Phone: (07) 3343 3166 Fax: (07) 3849 4705
Website: www.golder.com.au
A.B.N. 64 006 107 857

 

 

 

Client : Mr Harding

Project : Housing

TRIAXIAL SHEAR TEST
ReportNo.: R 5573
Job No. : 03632248
Reg'n No. : L1855/03
Senders No. :

Location : TP 9 (0.6 - 0.8 m)
Date of Test : 21/10/03 - 24/10/03

Address : Attunga Heights, Nossa Heads

Date Received :20/10/03
Sampled By: Golder

 

Type of test: Saturated Consolidated Undrained Staged with Pore Pressure Measurements Strain Rate : 0.04 mm/min

 

 

Sample type : Undisturbed Specimen size : 47.4 mm dia. X 95.6 mm Back Pressure : 200 kPa
‘Initial Moisture Content : 29.7 % Initial Saturation : 92 %
Initial Dry Density : 1.44 tim Moisture Content after test : 32.2 %

 

 

     

  

 

 

 

 

 

 

 

iJ
&
S
wn
od
s
wn

20
0 20 40 60 80 100 120 140
Normal Stress kPa
1 . Shi Max. P in (9

Sore _| svess tira) | Srese es) [pressuo nee) [Fees]  Ettactive COHESION 42 kPa

; 2 “ 5 08 Effective ANGLE OF FRICTION 14 °

3 100 76 27 3.4 Failure Criteria : Maximum stress ratio

 

 

 

Remarks :Shear Failure (Shear plane at 45 ° after test)
Material Description : Silty CLAY (CH) light brown, high plasticity, micro-fissured, moist.

 

Test Procedure : BQLP 4 (AS 1289 6.4.2 equivalent)

 

Prepared by we

 

 

Checked by To,

 

 

This Laboratory is registered by the National Association of Testing
Authorities, Australia. The test(s) reported herein have been performed
in accordance with the terms of registration. This document shall not be
seproduced exceptin full without the prior approval of the laboratory.

e |
Authorised Signatory Te Darr Bry te yd

4446

Golder Form Number R19 Triaxial
RL 0 - 28/07/03

Page 72

 

——-RTI-11/055- Folio B445

 

Page * of ¥

 

Ph : (07) 3343 3166 Fax : (07) 3343 4705

1/51 Secam Street Mansfield Qid 4122
PO Box 2034 Mansfield DC Qld 4122

 

 

 

 

 

 

 

0

 

 

  

 

 

4

 

 

 

 

 

 

 

s
%
&
=
a ls 3
¢ le
5 f&
°° SS
5 13
3 |S
& |2 e
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2
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9 = = =
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2 oc
as 8 s <§ 5
= 3 8 3 a
& o
_ Pay
es (OS
go og
a S
S< o 2
aa . ‘
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= :
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up : :
o eo 2 g s o °o o
° ~ ° (egy) ssang Joje1neq * ~ 8 a (eaifaunssard'2i0g ul a6teug ° ° ° 2
L3 £3 C3 2 ft Soe CFO fF Ce cos { Ki

 

RO1.1

oy

Checked by

Prepared by Nf

 

Page 73

=
L 4

RTI 11/055 Folio B446

Appendix C
Slope W Results

Golder Associates

Page 74

CS See elle

r —— oo — — —— —

 

Information contained on this drawing is the copyright of Golder Associates Pty Ltd. Unauthorised use or reproduction of this pian either wholly or in part without written pemnission infringes copyright .© Golder Associates Pty Ltd.

 

Elevation RL (m)

 

30

8

=k
a

10

 

Description: Sitty Sand

Unit Weight: 18
Cohesi
Phir40

   

Description: Sandy Clay

Description: Attunga Heights
Comments: Section A-A (East)_Run1

Description: Silty Sand
Unt Weight: 17
Cohesion: 0

Phi: 36

Factor of Safety = 0.84

oO

 

 

 

 

Unit Weight: 18
Cohesion: 10
Phi: 32
| | | | | |
5 10 15 20 2 30
Relative Distance
CLIENT . PROJECT
Mr P Harding Attunga Heights
omen AD/LRC | 14/11/03 | ™ SeenON AA
—
CHECKED SL DATE (Ul [02 ( East) RUN 1
SCALE PROJECT No FIGURE No

 

 

 

 

 

As Shown A4

 

 

03632248 C1

 

 

 

Lvva OTTOM GSO/TT IL

Page 75

 

 

 

e — os ey |

 

— —

ion ES Contained on ins afawing isthe repre of Golder Assodates Pty ‘a Unatahorsed u Use or reproduction ofthis plan ether wholy or in part without written emission infinges copyright. © Golder Assodates Ply Ltd.

 

 

   

 

 

 

 

 

 

 

 

eile
Description: Attunga Heights
Comments: Section A-A (East)_Run2
25 Bn
Factor of Safety = 1.91
Description: Sity Sand °
Unit Weight: 18
Cohesion: 2
ae Phi: 40)
S 2 Description: Sity Sand
Unit Weight: 17
aol, Cohesion: 0
~ 7
cS Description: Sandy Clay
Oo Unit Weight: 18
= oe 10
© :
LD 15 —
Lu
10 }—
: | | | | | |
0 5 10 15 20 25 30
Relative Distance
CLIENT . PROJECT
Mr P Harding Attunga Heights
oa AD/LRC | 14/11/03 | ™
oem mE 14/11 (03 SECTION AA ( East) RUN 2
SCALE As Shown A A PROJECT No 03632248 FIGURE No c 2

 

 

 

 

 

 

8PPa OTTOA GSGO/TT ILa

Page 76

 

 

&—al Mt

 

{ A & 2 c J

=| as —— —

Information contained on this drawing is the copyright of Golder Associates Pty Lid. Unauthorised use or reproduction of this plan either wholly or in part without written permission inffinges copyright .© Golder Associates Pty Ltd.

 

 

Description: Attunga Heights
-Comments: Section A-A (West)_Run1

 

Factor of Safety = 1.37

 

 

 

 

 

 

 

 

°
23 t- Description: Sand+Roat Matter
ihesen 2 7
= Ont Weg
E al eae
aad
w
c
2
=
YD 15 }—
iw
10 |
5 |
0 5
Relative Distance
CLIENT “ PROJECT
Mr P Harding Attunga Heights
ee ADRC=| " -44/isi038= |
CHECKED PBC DATE (€(U (02 SECTION AA ( West) RUN 1
as" As Shown a4 "03632248 ee

 

 

 

 

 

 

 

6PPa OCTTOA GSO/TT ILa

Page 77

 

 

f

{ 4 Cs t 4 L " t 4 4 t J ‘ 4 * 4 ! 5
Information contained on this drawing is the copyright of Golder Associates Pty Lid: Unauthorised use or reproduction ofthis plan either wholy erin part without wntien permission infnnges copyngnt. Golder Assodates Pty Lid:

 

=
f c 7

—

 

 

Description: Attunga Heights
-Comments: Section A-A (West)_Run2

 

  
 

     

 

 

 

 

 

 

 

Bir (asst: San Rot Matter
aoa 2
— Deserigtion: Sand
Eat Fattof of Safety = 0.85 _ ae Cie 8 ie
_ S i
~
Cc
2
o
>
& 15}
i
10 |-
Description: Cdluvium
Unk Weight: 19
ohesion: 5
5 | | he 38 | | | |
0 5 10 15 20 5 % B 40
Relative Distance
4 PROJECT
Mr P Harding Attunga Heights
om _AD/LRC | “14/1103 | ™
CHECKED TCU DATE (€(4(02 SECTION AA ( West) RUN 2
SCALE As Shown A4 PROJECT No 03632248 FIGURE No C4

 

 

 

 

 

 

 

OSPA OTTOA GSO/TT ILa

Page 78

 

t 1 ad c a . 2 t 3 i J ‘ , \ i ‘ 2 ‘ 2 , a ‘
Information contained on this drawing is the copyright of Golder Associates Pty Ltd. Unauthorised use or reproduction of this plan either wholy or in part without written permissicn infringes copyright .© Golder Associates Pty Ltd.

 

— c =

r

—

 

e

=|

 

 

Elevation RL (m)

8

=
a

10

Description: Attunga Heights
Comments: Section A-A (West)_Run3

 

Factor of Safety = 1.25

Oo

Description: Sand+Root Matter
Unit Weight: 17

Cohesion: 2

Phi: 32

   

Description: Sand

  

 

 

 

 

 

 

 

 

 

As Shown

 

A4

 

Description: Coluvium
Unit Weight: 19
| | eo = | | |
0 5 10 15 20 25 30 35 40
Relative Distance
CLIENT 3 PROJECT
Mr P Harding Attunga Heights
ows AD/LRC |" 14/11/03 | ™ SECTION RA UWesn RUNS
== Ss
CHECKED Te DATE (€(t [02 ( e )
‘SCALE PROJECT Ni FIGURE No

03632248 C5

 

 

 

TSta OTTOA GGO/TT Ile

Page 79

RTI 11/055 Folio B452

Appendix D
“Important Information About Your Geotechnical Engineering
Report”

Golder Associates

Page 80

 

~~

—
i i

Cc

RTI 11/055 Folio B453

 

Geotechnical Services Are Performed for
Specific Purposes, Persons, and Projects
Geotechnical engineers structure their services to meet
the specific needs of their clients. A geotechnical
engineering study conducted for a civil engineer may not
fulfil the needs of a construction contractor or even
another civil engineer. Because each geotechnical
engineering study is unique, each geotechnical
engineering report is unique, prepared solely for the
client. No one except you should rely on your
geotechnical engineering report without first conferring
with the geotechnical engineer who prepared it. And no
one — not even you — should apply the report for any
purpose or project except the one originally
contemplated.

A Geotechnical Engineering Report Is Based
on A Unique Set of Project-Specific Factors

Geotechnical engineers consider a number of ‘nique,

project-specific factors when establishing the scope of a

study. Typical factors include : the ¢lient’sgoals,

objectives, and risk management preferencesy the general

nature of the structure involved,\ its size, atid

configuration; the location of the structure on the=site;

and other planned or existing site improvementsysuch as

access roads, parking lots, and underground “utilities.

Unless the geotechnical engineer who conducted the

study specifically indicates otherwise, do ‘noi rely on a

geotechnical engineering report that was :

* not prepared for you,

* not prepared for your projecty

¢ not prepared for the specific site explored, or

* completed before important project changes were
made.

Typical change that can erode the reliability of an
existing geotechnical engineering report include those
that affect :
¢ the function of the proposed structure, as when it’s
changed froin a parking garage to an office building,
or from a light industrial plant to a refrigerated
warehouse,
¢ elevation, configuration, location, orientation, or
weight of the proposed structure,
composition of the design team, or
project ownership.

As a general rule, always inform your geotechnical
engineer of project changes — even minor ones - and
Tequest an assessment of their impact. Geotechnical
Engineers cannot accept responsibility or liability for
Problems that occur because their reports do not
consider developments of which they were not informed.

Subsurface Conditions Can Change

A geotechnical engineering report is based on conditions
that existed atthe time the study.was performed. Do not
rely on_a™ geotechnical engineering report whose
adequacy may have been affected by : the passage of
time; by man-made.events, such as construction on or
adjacent to the site;\or by natural events, such as floods,
earthquakes, or “groundwater fluctuations. Always
contact the geotechnical engineer before applying the
report to(determine if it is still reliable. A minor amount
of additional testing or analysis could prevent major
problems,

Most Geotechnical Findings Are
Professional Opinions

Site exploration identifies subsurface conditions only at
those points where subsurface tests are conducted or
samples are taken. Geotechnical engineers review field
and laboratory data and then apply their professional
judgement to render an opinion about subsurface
conditions throughout the site. Actual subsurface
conditions may differ — sometimes significantly ~ from
those indicated in your report. Retaining the
geotechnical engineer who developed your report to
provide construction observation is the most effective
method of managing the risks associated with
unanticipated conditions.

A Report’s Recommendations Are Not Final
Do not overrely on the construction recommendations
included in your report. Those recommendations are not
final, because geotechnical engineers develop them
principally from judgement and opinion. Geotechnical
engineers can finalise their recommendations only by
observing actual subsurface conditions revealed during
construction. The geotechnical engineer who developed
your report cannot assume responsibility or liability for
the report's recommendations if that engineer does not
perform construction observation,

A Geotechnical Engineering Report Is
Subject to Misinterpretation

Page | of 2
GAP - Form No, 3
RL2

Page 81

 

my

4

RTI 11/055 Folio B454

Other design team members’ misinterpretation of
geotechnical engineering reports has resulted in costly
problems. Lower that risk by having your geotechnical
engineer confer with appropriate members of the design
team after submitting the report. Also retain your
geotechnical engineer to review pertinent elements of the
design team’s plans and specifications. Contractors can
also misinterpret a geotechnical engineering report.
Reduce that risk by having your geotechnical engineer
participate in prebid and preconstruction conferences,
and by providing construction observation.

Do Not Redraw the Engineer’s Logs
Geotechnical engineers prepare final boring and testing
logs based upon their interpretation of field logs and
laboratory data. To prevent errors or omissions, the logs
included in a geotechnical engineering report should
never be redrawn for inclusion in architectural or other
design drawings. Only photographic or electronic
reproduction is acceptable, but recognise that separating
logs from the report can elevate risk.

Give Contractors a Complete Report and
Guidance

Some owners and design professionals mistakenly
believe they can make contractors. liable for
unanticipated subsurface conditions by limiting what
they provide for bid preparation. To help prevent costly.
problems, give contractors the complete geotechnical
engineering report, but preface it with a clearly written
letter of transmittal. In that letter, advise contractors that
the report was not prepared for purposes~of, bid
development and that the report’s accuracy is limited;
encourage them to confer with the geotechnicalvengineer
who prepared the report (a modest fee,may be required)
and/or to conduct additional study’to obtain the specific
types of information they need, or ‘prefer. «A prebid
conference can also be valuable. \RBe sure coniractors
have sufficient time to perform \additional_study? Only
then might you be in a position to give coritractors the
best information available to you, while requiring them

ASFE

to at least share ‘some of the financial responsibilities
stemming from unanticipated conditions.

Read Responsibility Provisions Closely

Some clients, design professionals, and contractors do
not recognise that geotechnical engineering is far less
exact than other engineering disciplines. This lack of
understanding has created unrealistic expectations that
have led to disappointments, claims, and disputes. To
help reduce such risks, geotechnical engineers
commonly include a variety of explanatory provisions in
their reports. Sometimes labelled “limitations”, many of
these provisions indicate where geotechnical engineers
responsibilities begin and end, to help others recognise
their own responsibilities and: risks. Read these
Provisions closely. Ask questions. Your geotechnical
engineer should respond fully and frankly.

Geoenvironmental Concerns Are Not

Covered

The equipmenit, techniques,\and personnel used to
perform’ a_geoenvironmental \study differ significantly
from those used to perform a geotechnical study. For
that ‘reason, a geotechnical engineering report does not
usually relate=any geoenvironmental _ findings,
eonclusionssor recommendations; e.g., about the
likelihood of encountering underground storage tanks or
regulated contaminants. Unanticipated environmental
problems have led to numerous project failures. If you
haye “hot yet obtained your own geoenvironmental
information, ask your geotechnical consultant for risk
marlagement guidance. Do not rely on an environmental
report prepared for someone else.

Rely on Your Geotechnical Engineer for
Additional Assistance

Membership in ASFE exposes geotechnical engineers to
a wide array of risk management techniques that can be
of genuine benefit for everyone involved with a
construction project. Confer with your ASFE member
geotechnical engineer for more information,

PROFESSIONAL
FIRMS PRACTICING
IN THE GEOSCIENCES

8811 Colesville Road Suite G106 Silver Spring, MD 20910
Telephone: 301-565-2733 Facsimile: 301-589-2017
emall: [email protected] www.aste.org

Copyright 1998 by ASFE, Inc. Unless ASFE grants written permission to do so, duplication of this document by any means whatsoever is expressly
prohibited. Re-use of the wording in this document, in whole or in part, also is expressly prohibited, and may be done only with the express
permission of ASFE or for purposes of review of scholarly research.

TIGER06983.5M

Page 2 of 2
GAP - Form No. 3
RL2

Page 82

                                             LIMITATIONS

This Document has been provided by Core Consultants Pty Ltd (“Core”) subject to the following
limitations:

This Document has been prepared for the particular purpose outlined in Core’s proposal and no
responsibility is accepted for the use of this Document, in whole or in part, in other contexts or for
any other purpose.

The scope and the period of Core’s Services are as described in C o r e ’s proposal, and are
subject to restrictions and limitations. Core did not perform a complete assessment of all possible
conditions or circumstances that may exist at the site referenced in the Document. If a service
is not expressly indicated, do not assume it has been provided. If a matter is not addressed, do not
assume that any determination has been made by Core in regards to it.

Conditions may exist which were undetectable given the limited nature of the enquiry Core was
retained to undertake with respect to the site. Variations in conditions may occur between
investigatory locations, and there may be special conditions pertaining to the site which have not
been revealed by the investigation and which have not therefore been taken into account in
the Document. Accordingly, additional studies and actions may be required.

In addition, it is recognised that the passage of time affects the information and assessment provided
in this Document. Core’s opinions are based upon information that existed at the time of the
production of the Document. It is understood that the Services provided allowed Core to form no
more than an opinion of the actual conditions of the site at the time the site was visited and cannot
be used to assess the effect of any subsequent changes in the quality of the site, or its surroundings,
or any laws or regulations.

Any assessments made in this Document are based on the conditions indicated from published
sources and the investigation described. No warranty is included, either express or implied, that
the actual conditions will conform exactly to the assessments contained in this Document.

Where data supplied by the client or other external sources, including previous site investigation
data, have been used, it has been assumed that the information is correct unless otherwise stated.
No responsibility is accepted by Core for incomplete or inaccurate data supplied by others.

Core may have retained subconsultants affiliated with Core to provide Services for the benefit of
Core. To the maximum extent allowed by law, the Client acknowledges and agrees it will not have
any direct legal recourse to, and waives any claim, demand, or cause of action against, Core’s
affiliated companies, and their employees, officers and directors.

This Document is provided for sole use by the Client and is confidential to it and its professional
advisers. No responsibility whatsoever for the contents of this Document will be accepted to any
person other than the Client. Any use which a third party makes of this Document, or any reliance
on or decisions to be made based on it, is the responsibility of such third parties. Core accepts no
responsibility for damages, if any, suffered by any third party as a result of decisions made or
actions based on this Document.




Limitations                                Page 1 of 1                                   Date: 01/10/2015
FRM-065                             Uncontrolled When Printed                                  Issue: 1.01

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