geotechnical investigation report 31 march 2016 - wanju wa
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1 EXECUTIVE SUMMARY............................................................................................... 12 INTRODUCTION ......................................................................................................... 13 SITE DESCRIPTION AND GEOMORPHOLOGY .............................................................. 24 PROPOSED DEVELOPMENT........................................................................................ 25 DESKTOP REVIEW...................................................................................................... 2
6 CMW FIELD INVESTIGATION ...................................................................................... 37 LABORATORY TESTING .............................................................................................. 48 GROUND MODEL....................................................................................................... 4
8.4.1 Classification Tests ...................................................................................................................... 68.4.2 Organic Content .......................................................................................................................... 78.4.3 Geotechnical Engineering Tests................................................................................................... 7
9 GEOTECHNICAL ASSESSMENT AND RECOMMENDATIONS .........................................8
9.1.1 Ponds, Dams, Effluent Storage Basins and Stock Disposal Pits ...................................................8
9.3.1 Topsoil Strip and Proof Compaction ............................................................................................ 89.3.2 Remediation of Basins and Drains............................................................................................... 99.3.3 Bulk Earthworks........................................................................................................................... 99.3.4 Imported Fill .............................................................................................................................. 109.3.5 Retaining Wall Backfill............................................................................................................... 109.3.6 Fill Induced Settlements............................................................................................................. 109.3.7 Earthworks Monitoring ............................................................................................................. 11
9.4.1 Single Level Residential Dwellings ............................................................................................. 119.4.2 Strip and Pad Foundations ........................................................................................................ 11
10 FURTHER WORK ...................................................................................................... 1311 CLOSURE ................................................................................................................. 1312 REFERENCES ............................................................................................................ 14
in situ
Earth Retaining Structures
“Earth Retaining Structures”
Methods of testing soils for engineering purposes, Geotechnical Site Investigations,
Residential slabs and footings, Guidelines on earthworks for commercial and residential
developments, Earth retaining structures,
Bunbury Burekup, , 1:50,000 Urban Geology Map,
Soil classification using the cone penetration test,
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Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 2.79 m, Date: 15/02/2016Surface Elevation: 13.35 m
Hynes Road, BunburyCoords: X:383689.50, Y:6313060.50
Cone Operator: Andrew
CPT 1
Location:
1
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 10.50 m, Date: 15/02/2016Surface Elevation: 13.20 m
Hynes Road, BunburyCoords: X:383535.41, Y:6312827.35
Cone Operator: Andrew
CPT 2
Location:
2
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 7.44 m, Date: 15/02/2016Surface Elevation: 13.29 m
Hynes Road, BunburyCoords: X:383791.88, Y:6312613.29
Cone Operator: Andrew
CPT 3
Location:
3
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 2.77 m, Date: 15/02/2016Surface Elevation: 13.71 m
Hynes Road, BunburyCoords: X:384070.19, Y:6312636.99
Cone Operator: Andrew
CPT 4
Location:
4
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 5.10 m, Date: 15/02/2016Surface Elevation: 13.34 m
Hynes Road, BunburyCoords: X:383657.25, Y:6312091.58
Cone Operator: Andrew
CPT 5
Location:
5
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 10.50 m, Date: 15/02/2016Surface Elevation: 11.91 m
Hynes Road, BunburyCoords: X:383249.58, Y:6313028.07
Cone Operator: Andrew
CPT 6
Location:
6
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 6.49 m, Date: 15/02/2016Surface Elevation: 13.29 m
Hynes Road, BunburyCoords: X:382954.55, Y:6313762.99
Cone Operator: Andrew
CPT 7
Location:
7
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 8.50 m, Date: 15/02/2016Surface Elevation: 13.27 m
Hynes Road, BunburyCoords: X:383246.38, Y:6314138.24
Cone Operator: Andrew
CPT 8
Location:
8
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 4.46 m, Date: 15/02/2016Surface Elevation: 12.29 m
Hynes Road, BunburyCoords: X:383063.85, Y:6314765.51
Cone Operator: Andrew
CPT 9
Location:
9
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 5.50 m, Date: 15/02/2016Surface Elevation: 13.81 m
Hynes Road, BunburyCoords: X:384805.51, Y:6313244.43
Cone Operator: Andrew
CPT 10
Location:
10
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 4.92 m, Date: 15/02/2016Surface Elevation: 14.26 m
Hynes Road, BunburyCoords: X:384823.78, Y:6314096.23
Cone Operator: Andrew
CPT 11
Location:
11
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 5.50 m, Date: 15/02/2016Surface Elevation: 12.91 m
Hynes Road, BunburyCoords: X:383978.07, Y:6314134.88
Cone Operator: Andrew
CPT 12
Location:
12
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 5.50 m, Date: 15/02/2016Surface Elevation: 14.19 m
Hynes Road, BunburyCoords: X:383517.08, Y:6313944.01
Cone Operator: Andrew
CPT 13
Location:
13
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 3.01 m, Date: 15/02/2016Surface Elevation: 12.67 m
Hynes Road, BunburyCoords: X:383555.93, Y:6313296.35
Cone Operator: Andrew
CPT 14
Location:
14
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 3.58 m, Date: 15/02/2016Surface Elevation: 13.14 m
Hynes Road, BunburyCoords: X:383954.56, Y:6313408.48
Cone Operator: Andrew
CPT 15
Location:
15
Project: Wanju Development (Project No.: PER2016-0260)
info@cptwest.com.auwww.cptwest.com.auT: 0403 370 045F: 08 6278 1595
Total depth: 5.48 m, Date: 15/02/2016Surface Elevation: 13.54 m
Hynes Road, BunburyCoords: X:384312.52, Y:6313985.25
Cone Operator: Andrew
CPT 16
Location:
16
CERTIFICATE OF ANALYSIS 177132Client:CMW GeosciencesUnit 19 Wembley Green Offices127 Herdsman ParadeWA 6104
Attention: M Watts
Sample log in details:Your Reference: PER2016-0260 Investigation 22/02/2016No. of samples: 43 SoilDate samples received: 19/02/2016Date completed instructions received: 22/02/2016Location:
Analysis Details:Please refer to the following pages for results, methodology summary and quality control data.Samples were analysed as received from the client. Results relate specifically to the samples as received.Results are reported on a dry weight basis for solids and on an as received basis for other matrices.Please refer to the last pages of this report for any comments relating to the results.
Report Details:Date results requested by: 29/02/16Date of Preliminary Report: Not IssuedIssue Date: 29/02/16NATA accreditation number 2901. This document shall not be reproduced except in full.Accredited for compliance with ISO/IEC 17025.Tests not covered by NATA are denoted with *.
Results Approved By:
Page 1 of 7MPL Reference: 177132Revision No: R 00
Client Reference: PER2016-0260 Investigation 22/02/2016
Miscellaneous Inorg - soil Our Reference: UNITS 177132-1 177132-2 177132-3 177132-4 177132-5Your Reference ------------- TP03 TP04 TP07 TP15 TP20
Depth ------------ 0.1 0.1 0.1 0.1 0.1Date Sampled
Type of sample18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil
Date prepared - 26/02/2016 26/02/2016 26/02/2016 26/02/2016 26/02/2016
Date analysed - 29/02/2016 29/02/2016 29/02/2016 29/02/2016 29/02/2016
Loss on Ignition % 40 8.7 1.4 10 14
Miscellaneous Inorg - soil Our Reference: UNITS 177132-6 177132-7 177132-8 177132-9 177132-10Your Reference ------------- TP24 dark TP27 TP31 TP32 TP35
Depth ------------ 0.1 0.1 0.1 0.1 0.1Date Sampled
Type of sample18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil
Date prepared - 26/02/2016 26/02/2016 26/02/2016 26/02/2016 26/02/2016
Date analysed - 29/02/2016 29/02/2016 29/02/2016 29/02/2016 29/02/2016
Loss on Ignition % 14 6.9 9.8 8.4 16
Miscellaneous Inorg - soil Our Reference: UNITS 177132-11 177132-12 177132-13 177132-14 177132-15Your Reference ------------- TP39 TP43 TP45 TP48 TP52
Depth ------------ 0.1 0.1 0.1 0.1 0.1Date Sampled
Type of sample18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil
Date prepared - 26/02/2016 26/02/2016 26/02/2016 26/02/2016 26/02/2016
Date analysed - 29/02/2016 29/02/2016 29/02/2016 29/02/2016 29/02/2016
Loss on Ignition % 11 17 15 3.2 11
Miscellaneous Inorg - soil Our Reference: UNITS 177132-16 177132-17 177132-18 177132-19 177132-20Your Reference ------------- TP55 TP58 TP60 TP64 TP68
Depth ------------ 0.1 0.1 0.1 0.1 0.1Date Sampled
Type of sample18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil
Date prepared - 26/02/2016 26/02/2016 26/02/2016 26/02/2016 26/02/2016
Date analysed - 29/02/2016 29/02/2016 29/02/2016 29/02/2016 29/02/2016
Loss on Ignition % 9.0 11 17 6.5 7.8
Miscellaneous Inorg - soil Our Reference: UNITS 177132-21 177132-22 177132-23 177132-24 177132-25Your Reference ------------- TP72 TP74 TP77 TP79 TP84
Depth ------------ 0.1 0.1 0.1 0.1 0.1Date Sampled
Type of sample18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil
Date prepared - 26/02/2016 26/02/2016 26/02/2016 26/02/2016 26/02/2016
Date analysed - 29/02/2016 29/02/2016 29/02/2016 29/02/2016 29/02/2016
Loss on Ignition % 6.9 5.3 7.1 3.3 11
Page 2 of 7MPL Reference: 177132Revision No: R 00
Client Reference: PER2016-0260 Investigation 22/02/2016
Miscellaneous Inorg - soil Our Reference: UNITS 177132-26 177132-27 177132-28 177132-29 177132-30Your Reference ------------- TP87 TP91 TP94 TP96 TP98
Depth ------------ 0.1 0.1 0.1 0.1 0.1Date Sampled
Type of sample18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil18/02/2016
Soil
Date prepared - 26/02/2016 26/02/2016 26/02/2016 26/02/2016 26/02/2016
Date analysed - 29/02/2016 29/02/2016 29/02/2016 29/02/2016 29/02/2016
Loss on Ignition % 11 4.2 6.1 12 6.5
Page 3 of 7MPL Reference: 177132Revision No: R 00
Client Reference: PER2016-0260 Investigation 22/02/2016
Method ID Methodology Summary
INORG-092 LOI - Sample is dried, then ignited in a furnace.
Page 4 of 7MPL Reference: 177132Revision No: R 00
Client Reference: PER2016-0260 Investigation 22/02/2016QUALITY CONTROL UNITS PQL METHOD Blank Duplicate Sm# Duplicate results Spike
Sm#Spike % Recovery
Miscellaneous Inorg - soil
Base ll Duplicate ll %RPD
Date prepared - 26/02/2016
[NT] [NT] LCS-1 26/02/2016
Date analysed - 29/02/2016
[NT] [NT] LCS-1 29/02/2016
Loss on Ignition % 0.1 INORG-092 <0.1 [NT] [NT] [NR] [NR]
Page 5 of 7MPL Reference: 177132Revision No: R 00
Client Reference: PER2016-0260 Investigation 22/02/2016
Report Comments:
Asbestos Signatories:
Asbestos was analysed by Approved Identifier: Not applicable for this jobAirborne fibres were analysed by Approved Counter: Not applicable for this job
Definitions:
NT: Not tested NA: Test not required INS: Insufficient sample for this test PQL: Practical Quantitation Limit<: Less than >: Greater than RPD: Relative Percent Difference LCS: Laboratory Control SampleNS: Not Specified NEPM: National Environmental Protection Measure NR: Not Reported
Australian Drinking Water Guidelines recommend that Thermotolerant Coliform, Faecal Enterococci, & E.Coli levels are less than 1cfu/100mL. The recommended maximums are taken from "Australian Drinking Water Guidelines",published by NHMRC & ARMC 2011
Page 6 of 7MPL Reference: 177132Revision No: R 00
Client Reference: PER2016-0260 Investigation 22/02/2016
Quality Control Definitions
Blank: This is the component of the analytical signal which is not derived from the sample but from reagents, glassware etc, can be determined by processing solvents and reagents in exactly the same manner as for samples. Duplicate : This is the complete duplicate analysis of a sample from the process batch. If possible, the sampleselected should be one where the analyte concentration is easily measurable. Matrix Spike : A portion of the sample is spiked with a known concentration of target analyte. The purpose of the matrix spike is to monitor the performance of the analytical method used and to determine whether matrix interferences exist. LCS (Laboratory Control Sample) : This comprises either a standard reference material or a control matrix (such as a blanksand or water) fortified with analytes representative of the analyte class. It is simply a check sample. Surrogate Spike: Surrogates are known additions to each sample, blank, matrix spike and LCS in a batch, of compoundswhich are similar to the analyte of interest, however are not expected to be found in real samples.
Laboratory Acceptance Criteria
Duplicate sample and matrix spike recoveries may not be reported on smaller jobs, however, were analysed at a frequencyto meet or exceed NEPM requirements. All samples are tested in batches of 20. The duplicate sample RPD and matrixspike recoveries for the batch were within the laboratory acceptance criteria.Filters, swabs, wipes, tubes and badges will not have duplicate data as the whole sample is generally extracted during sample extraction.Spikes for Physical and Aggregate Tests are not applicable.For VOCs in water samples, three vials are required for duplicate or spike analysis.
Duplicates: <5xPQL - any RPD is acceptable; >5xPQL - 0-50% RPD is acceptable.Matrix Spikes, LCS and Surrogate recoveries: Generally 70-130% for inorganics/metals; 60-140%for organics (+/-50% surrogates) and 10-140% for labile SVOCs (including labile surrogates), ultra trace organicsand speciated phenols is acceptable.
In circumstances where no duplicate and/or sample spike has been reported at 1 in 10 and/or 1 in 20 samples respectively, the sample volume submitted was insufficient in order to satisfy laboratory QA/QC protocols.
When samples are received where certain analytes are outside of recommended technical holding times (THTs), the analysis has proceeded. Where analytes are on the verge of breaching THTs, every effort will be made to analyse within the THT or as soon as practicable.
Where sampling dates are not provided, Envirolab are not in a position to comment on the validityof the analysis where recommended technical holding times may have been breached.
Page 7 of 7MPL Reference: 177132Revision No: R 00
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