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Appendix D - Geotechnical Report
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Test Pit No.
TP5
Page 1 of 1
Engineering Log - Test Pit Project No.: 26073
Client: Threedom Nominees Pty Ltd Commenced: 3/3/2026
Project Name: Proposed Subdivision Completed: 3/3/2026
Hole Location: 220 Black Mountain Range Road, Black Mountain Logged By: MM
Hole Position: 486569.0 m E 7080408.0 m N MGA2020 Zone 56 Checked By: RKG
Equipment Type and Model: 5t Excavator RL Surface: No survey
Excavation Dimensions: Datum: AHD Operator: Ryano's Civil
Excavation Information Material Description and Observations
Relative Density
Classification DCP TEST
Penetration
Pocket
Consistency
Graphic Log
Samples Material Description
Penetrometer
Condition
Recovery
Tests soil type: plasticity or particle characteristics,
Moisture
UCS Blows per 100 mm
Symbol
Method
secondary and minor components, colour
Water
Remarks RL Depth (kPa)
(m) (m) 0 5 10 15 20 25
100
200
300
400
500
Silty CLAY (TOPSOIL) medium plasticity, w= St
brown PL
U50_0.1-0.3m CH
Silty CLAY, high plasticity, pale red brown, 350
trace fine sized angular gravel, (RESIDUAL)
0.5
w<
VSt
becoming grey mottled pale red brown, PL
340
grading to extremely weathered material with
depth
1.0
PHYLLITE, highly weathered, pale grey,
Not Encountered
TECTONIC 3.00.2 LIB.GLB Log 1 TECTONIC BOREHOLE 26073.GPJ <<DrawingFile>> 31/3/2026 16:15 10.02.00.04 Datgel Lab and In Situ Tool - DGD | Lib: Tectonic 3.00.2 2021-03-30 Prj: Tectonic 3.00.2 2021-03-30
stained red brown, very low strength
EX
1.5
2.0
becoming distinctly weathered, very low to low
strength
2.5
becoming slightly weathered, low strength
Hole Terminated at 2.80 m
Target depth
3.0
Method Penetration Water Samples and Tests Moisture Condition Consistency/Relative Density
N - Natural Exposure VE - Very Easy Level (Date) U## - Undisturbed Sample (## mm) D - Dry VS - Very Soft
X - Existing Excavation E - Easy DS - Disturbed Sample M - Moist S - Soft
BH - Backhoe Bucket Inflow BDS- Bulk Disturbed Sample W - Wet F - Firm
R - Ripper F - Firm VSt - Very Stiff
EX - Excavator H - Hard H - Hard
RH - Rock Hammer VH - Very hard VL - Very Loose
Plastic Limit
L - Loose
Classification Symbols < PL MD - Medium Dense
and Soil Descriptions = PL D - Dense
Based on Unified Soil > PL VD - Very Dense
Classification System Fr - Friable
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