Sewer Geotechnical Report

8/22/2019 Sewer Geotechnical Report

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Appendix H SPECIALIST STUDIES


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Geotechnical


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Ter rat es t Preb en Naid o o & A s s o c iat es

CAMPERDOWN NEW BULK SEWER RETICULATION NETWORKAND WASTE WATER TREATMENT PLANT

GEOTECHNICAL REPORT

CONTENTS

1. INTRODUCTION _______________________________________________ 1

2. A PPOINTMENT _______________________________________________ 1

3. IN FO R MATIO N AVA ILA BL E _____________________________________ 1

4. SITE DESCRIPTION ____________________________________________ 2

5. FIELDW ORK __________________________________________________ 2

5.1. Trial pits _________________________________________________ 2

5.2. Dynamic Cone Penetration Tests _____________________________ 2

6. G EN ER AL G EO LO G Y __________________________________________ 3

6.1. Fill Materials______________________________________________ 3

6.2. Transported Soils _________________________________________ 3

6.2.1. Colluvial Soils __________________________________________ 36.2.2. Pedogenic Soils_________________________________________ 3

6.3. Residual Shale Soils and Weathered Shale Bedrock _____________ 4

6.4. Residual Sandstone Soils and Weathered Sandstone ____________ 4

7. GROUNDWATER ______________________________________________ 4

8. LA B ORATORY TESTING ________________________________________ 4

9 G EO TECH N IC AL EVALU A TIO N AN D R EC O MMEN D ATIO N S 7


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15. APPEN D IX B: G EO LO G IC AL PR O FILES _________________________13

16. APPEN D IX C : D C P TEST R ESU LTS _____________________________15

17. APPEN D IX D : LA BO R ATO R Y TEST R ESU LTS ____________________16

18. APPEN D IX E: G EO LO G IC AL LO N G SEC TIO N S _________________ 18-16


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CAMPERDOWN NEW BULK SEWER RETICULATION NETWORKAND WASTE WATER TREATMENT WORKS PLANT

GEOTECHNICAL REPORT

1. INTRODUCTION

This report presents the results of a geotechnical investigation undertaken for theproposed new bulk sewer reticulation network and waste water treatment works plantin Camperdown near Pietermaritzburg, KwaZulu-Natal. It is intended that theproposed development will comprise the following: Sludge ponds, aeration tanks, a

concrete channel, a chlorine contact channel structures and about 15 km longincoming sewer reticulation pipelines and other ancillary structures.

The objectives of the geotechnical investigation of the sewer reticulation routes were:

To define the nature and variability of the founding conditions for theproposed reticulation pipelines,

To determine the geology along the proposed reticulation routes, To determine the classes of excavation along the reticulation routes,

To provide and assessment of the suitability of the in situ materials for the useas Selected Granular Material (bedding) and Selected Back Fill Material,

To identify any potentially problematic geological conditions along thereticulation routes.

The aim of the geotechnical investigation at the proposed waste water treatment

works plant site is to provide a suitable founding medium for the plant, discussproblematic conditions and provide recommendations for foundation design.


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4. SITE DESCRIPTION

The proposed sewer reticulation network is located within the Camperdown townnear Pietermaritzburg in KwaZulu-Natal. The waste water treatment works plant issituated on the western side of the Rainbow Chicken Complex in Camperdown.

Access to the site is off the N3 National Road, Camperdown offramp which joins theroads in the Camperdown town.

Topographically, the eastern side of the area within which the proposed bulk sewer

network is located is relatively flat, anticipated to be created on a cut to fill platform ofthe Camperdown CBD area. The western side of the area is characterised bydrainage channels and hills. No major drainage channels were noted o n site. The

waste water treatment works plant is located on a gently to moderately s lopingtopography.

A Site Plan is attached as Figure 1 and a Geological Plan is included as Figure 2,both in Appendix A.

5. FIELDWORK

The field investigation was carried out during the month of July 2011 and comprisedthe following:

i) Trial pits, andii) Dynamic Cone Penetrometer Tests.

5 1 T i l it


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and to provide an indication to the depths at which hard material occurs. The testswere advanced to refusal depths between 0.6 and 2.4 metres below ground level.

The results of the DCP tests are included in Appendix C of this report. The resultshave been used to derive, empirically, Estimated Allowable Safe Bearing Pressures(EASBP) for the soils. The estimation of the EASBPs is based on Terzaghissettlement chart for 25mm of settlement, using empirical correlations, from the DCPtest results.

The DCP test results indicate that the EASBPs under the site are generally high at

depths normally associated with normal founding in shale bedrock.

6. GENERAL GEOLOGY

The site is generally underlain by fill, transported and residual soils overlying shaleand sandstone bedrocks of the Dwyka Formation. The 1:250 000 Geological MapSeries, 2930 Durban indicate the area to be intruded by Jurassic Aged dolerites.Dolerite intrusions were not encountered during investigation.

6.1. Fill Materials

Fill material occurs on selected positions of the site and comprise yellowish brown todark reddish brown and brown, silty clayey gravel and gravelly silty clays with gravelcomponents comprising weathered shale. The fill materials occur from surface levelthrough to depths between 0.1 and 1.6 metres below existing ground level.

6.2. Transported Soils


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at an average depth of 0.9 meters, in the range 0.6 and 1.6 metres below existingground level. This horizon is quite thick in place, for an example it exceeds 2.5

metres in TP24.

6.3. Residual Shale Soils and Weathered Shale Bedrock

The weathered shale bedrock is either directly overlain colluvial soils or anintervening layer of residual shale soils comprising dark brown to dark orangey

brown, mottled and speckled dark greyish brown, firm to stiff, gravelly silty clays togravelly clayey silt with gravel components comprising weathered shale and

ferruginised nodules. The residual soils occur at an average depth of 0.5 metresbelow existing ground level.

The underlying bedrock comprises completely to highly weathered becoming lessweathered with depth, very closely to closely jointed, very soft to soft rock strengthimproving with depth, shale.

6.4. Residual Sandstone Soils and Weathered Sandstone

Residual sandstone soils developed from the complete weathering of sandstone

bedrock is either overlain by colluvial soils or ferruginised horizon. These soilscomprise dark reddish brown, mottled and speckled yellowish brown and darkgreyish brown, stiff to very stiff, silty c lays to clayey silt. These soils occur at anaverage depth of 0.7 metres below existing ground level.

The underlying bedrock comprise purplish brown a nd brown, mottled and speckledlight grey, completely to highly weathered, very closely to closely jointed, soft throught di h d k t th t d t


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Ter r at es t Pr eb en N aid o o & A s s o c iat es

41151 5 August 2011Camperdown Sewer Treatment PlantGeotechnical Investigation Report

T:\ACTIVE PROJECTS\41151 - Camperdown Sewer Treatment Plant (GN)\04 Documents and Reports\J &G Reports\Geotech report 41151.doc

Table 1

Particle Size Distribution and Atterberg Limit Determination Tests

PitNo

Depth

(m)

Material

Description

Particle Size % Atterberg Limits %

GM

Modified

AASHTO

CBR Values (%)

Compaction MDD (%) Classification and

ActivityClay Silt Sand Gravel LL PI LS

Equiv.

PI

MDD

(kgm3)

OMC

%90 93 95 100

TP2 1.1-1.5

Sandy silt.

Weathered

shale.

9 46 27 18 33 11 6 7.9 1.01 1681 17.7 2 3 4 5 A-6 (3), Low

TP3 0.6-1.3

Clayey silty

sand. Residual

shale

12 34 31 23 41 16 7 10.7

A-7-6(3), Low

Anticipate G10 or

less

TP14 0.4-1.3 Silty sand.

Residual shale.11 41 41 7 34 17 8 14.8 0.66 17.31 18.8 11 16 20 40 A-6(7), G8, Low

TP19 0.7-1.5Silty sand.

Residual shale.13 38 49 0 36 18 8 16.9 A-6(7), Medium

TP23 0.5-1.2Silty Sand.

Residual shale.9 43 32 16 40 14 7 10.5 A-6(5), Low

TP24 1.1-2.8

Silty Sand.

Ferruginised

horizon.

7 32 48 13 27 7 4 5.2 A-4(1), Low

TP27 1.6-1.8Sandy Silt.

Residual shale.15 53 17 15 43 18 8 14.6 A-7-6(8), Medium


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Ter r at es t Pr eb en N aid o o & A s s o c iat es

41151 6 August 2011Camperdown Sewer Treatment PlantGeotechnical Investigation Report

T:\ACTIVE PROJECTS\41151 - Camperdown Sewer Treatment Plant (GN)\04 Documents and Reports\J &G Reports\Geotech report 41151.doc

Pit

No

Depth

(m)

Material

Description

Particle Size % Atterberg Limits %

GM

Modified

AASHTO

CBR Values (%)

Compaction MDD (%) Classification and

ActivityClay Silt Sand Gravel LL PI LS

Equiv.

PI

MDD

(kgm3)

OMC

%

90 93 95 100

TP28 1.6-2.0

Silty sand.

Weathered

sandstone.

4 28 63 5 35 7 4 5.9 A-4(0), Low

TP31 0.2-1.0Silty sand.

Colluvium.3 28 45 24 17 4 2 2.5 A-2-4(0), Low

LL- Liquid Limit MDD Maximum Dry Density Classification in terms of AASHTOLS - Linear Shrinkage OMC Maximum Moisture Content TRH14 (1985)

PI - Plasticity Index GM Grading Modulus Unified SystemEquiv PI Equivalent Plasticity Index of whole sample


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9. GEOTECHNICAL EVALUATION AND RECOMMENDATIONS

9.1. Proposed Pipeline Network

More detailed information relating to the geotechnical conditions of the pipeline isincluded in the Geological Long Sections contained in Appendix E. The subsoilconditions between the test positions have been inferred using professional

judgement.

The Geological Long Sections of each section of the pipeline have been compiled

based on the information gained during investigation. These sections include:-

The discrete number of each trial pit position,

The coordinates of each trial pit position (WGS 84),

A schematic summary of the class of excavation,

Details of any soil sample taken,

The suitability of the in situ material for use as a bedding material, and

General comments.

9.2. Excavation Requirements

The trenchability of the materials underlying the proposed pipeline has been assedaccording to the criteria published by SANS1200. Descriptions of excavationsclasses are given in Table 3 below.

Table 3: Definitions of Excavation Classes

C


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If excavations are carried out over rainy periods, groundwater seepage may beencountered, and problems related to collapse of trench sidewalls are expected to

occur, particularly where the sidewalls comprise sandy materials of colluvial and orresidual soils as evidenced in TP 20, where minor sidewall collapse was observed.

9.3. Material Evaluation and Pipe Bedding

In terms of the SANS 1200 LB (1983) concerning bedding requirements, buried

pipelines require two types of selected material. Those selected materials are termedSelected Granular Material and Selected Fill Material.

From both a visual assessment of the materials encountered in the trial pits and theresults of the laboratory tests in Table 1, the following conclusions can be maderegarding the suitability of the in situ materials for the use in the construction of thebedding layers of the pipeline:-

Selected Granular Material is described as granular, non-cohesive andsingularly graded between 0.6 and 0.9mm. The material must be freedraining and have a compactibility factor not exceeding 0.4.

Selected Back Fill Material is defined as a material with a Plasticity Index

(PI) not exceeding 6, free from lumps, vegetation and stones of adiameter exceeding 30mm.

In general, the Selected Granular Material is used as bedding material to supportthe pipe, while the Selected Back Fill Material is used as blanket material over the

crown of the pipe. General Backfill material, which is placed above the blanketmaterials, up to ground level normally, consists of material originally removed from


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Consideration should also be given to carefully replacing the grass cover sods backover the trench to encourage re-growth to stabilise the disturbed soils.

9.5. Trench Stability

In general it is anticipated that vertical sidewall of trench excavations will be stableover the short term. The sidewalls of the trial pits put down for investigation werestable while the investigation was in progress. It is considered that in general

trenches not exceeding 1.5 metre depth can remain open for periods of up to 2 dayswithout significant collapse provided no significant rainfall and associated rise in

groundwater seepage occurs during this period. If saturation of the trench occurs,sidewalls of trenches deeper than 1m should either be battered to a safe angle of1V:2H (cohesionless) or supported laterally. In this respect it is recommended thatthe length of trenches likely to be left open for any sustained period be limited toprevent deterioration in the trench stability.

10. GENERAL ASSESSMENT OF THE WASTE WATER TREATMENT WORKS(WWTW) SITE

10.1. Proposed Waste Water Treatment Works Plant

It is understood that the waste water treatment works plant will comprise 65m lengthopen concrete channel, two 13.5 metre diameter clarifiers, aeration tank, sludge bedsand chlorine contact channel.

11. RECOMMENDATIONS


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11.2. Drainage

It is imperative that site drainage and landscaping is implemented in all areas toprevent surface ponding, where subsequent ingress into fills and foundations has thepotential to cause destabilisation over time, such as differential settlements due tolowered subsoil strength. This must also include the conveyance of all runoff androof discharge away from the structures and into the natural drainage lines.

11.3. Cut and Fill Design

General good practice for cuts and fills of less than 2 m height should be followed.Cuts and fills that exceed 2m should be designed with special considerations appliedto them. The fill must be compacted in layers not exceeding 200mm or the

appropriate layer thickness for the compaction plant, whichever is the lesser.Compaction should be to at least 93% of the Modified AASHTO maximum drydensity at optimum moisture content. Provided that the construction is done properlyit is expected that a slope of 1 in 2.5 should be adequate for the stability of theconstructed slope.

All cut and fill slopes must be suitably vegetated as soon as possible afterconstruction to reduce the risk of erosion and instability due to infiltration.

Although excavations are not expected to be problematic, the contractor will need toappoint an excavation supervisor in terms of section 11 of the ConstructionRegulations 2003.

11.4. Earthworks


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The investigation undertaken has concluded that the site is suitable for the proposeddevelopment, provided that the recommendations provided in this report are adhered

to.

The site is underlain by weathered shale and sandstone bedrocks of the DwykaFormation. The bedrocks are either overlain by transported or residual soils.

According to the specifications contained in SANS 1200 LB (1983), the in situ soilsunderlying the sit are not considered for use as Selected Back Fill Materials or asSelected Granular Materials. These materials will need to be imported to site.Selected in situ materials are suitable as Main Fill only.

Excavation conditions are generally soft mechanism excavation extending to

intermediate excavation in place.

Recommendations for the founding, drainage and earthworks at the proposedWWTW location are also provided.

Finally, it should be noted that the subsoil conditions contained in this report relate to

the information obtained from the trial pits and DCP tests put down for investigation.It is possible that variances to the anticipated subsoil conditions will be encounteredin other parts of the site during construction. It is therefore important that when suchvariances occur, they are reported to Terratest (Pty) Ltd so that timeous assessmentand recommendations for the necessary adjustments to construction procedure canbe made. It is also critical that Terratest inspect and approve foundation excavationsto confirm depth of founding and bearing pressures.


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Ter r at es t Pr e b en N aid o o & A s s o c iat es

14. APPENDIX A: PLANS


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15. APPENDIX B: GEOLOGICAL PROFILES


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PREBEN NAIDOO & aSSOCIATESCAMPERDOWN SEWER AND RETICULATION NETWORKAND WASTE WATER TREATMENT PLANT

HOLE No:TP1Sheet 1 of 1


JOB NUMBER:41151JOB NUMBER:41151

0.50

0.00

1.00

Slightly moist, greyish brown, firm silty CLAY. Colluvium.

Slightly moist, dark brown to dark orangey brown and dark greyish brown,stiff to very stiff, gravelly silty CLAY. Gravel components comprising

weathered shale and occasional ferruginised nodules. Residual Shale.

Yellowish brown, stained and streaked dark greyish brown, highly tomoderately weathered, very closely to closely jo inted, very soft to softrock strength improving with depth SHALE. Dwyka Formation

Scale1:20


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1.1--1.5m





0.60

0.00

1.10


Dark orangey brown, mottled and speckled dark greyish brown, highly to

completely weathered, very closely to closely jointed, very soft to soft rockstrength, SHALE. Dwyka Formation

Yellowish brown, stained and streaked dark greyish brown, highly tomoderately weathered, very closely to closely jo inted, very soft to softrock strength improving with depth, SHALE. Dwyka Formation

Scale1:20


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0.6--1.30m





0.60

0.00

1.30


Slightly moist, dark brown to dark orangey brown and dark greyish brown,

stiff to very stiff, gravelly silty CLAY. Gravel components comprisingweathered shale and occasional ferruginised nodules. Residual Shale.


Scale1:20


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0.50

0.00

0.90


Slightly moist, dark brown to dark orangey brown and dark greyish brown,stiff to very stiff, gravelly silty CLAY. Gravel components comprising

weathered shale and occasional ferruginised nodules. Residual Shale.


Scale1:20


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0.30

0.00

0.70

1.90

Slightly moist, greyish brown, firm, silty CLAY. Colluvium.

Dark orangey brown, mottled and speckled dark greyish brown, highly tocompletely weathered, very closely to closely jointed, very soft to soft rockstrength, SHALE. Dwyka Formation

Yellowish brown, stained and streaked dark greyish brown, highly tomoderately weathered, very closely to closely jo inted, very soft to softrock strength improving with depth SHALE. Dwyka Formation

Scale1:20

NOTES


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0.30

0.00

1.30

Slightly moist, greyish brown firm, silty CLAY. Colluvium.


Scale1:20

NOTES

1) Refusal depth of a TLB machine at 1.30m on weathered shale.

2) No groundwater seepage.

3) No sidewall collaspe.


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0.60

0.00

0.80


Slightly moist, dark orangey reddish brown, mottled and streaked dark

greyish brown, stiff to very stiff, gravelly silty CLAY. Gravel componentscomprising weathered shale. Residual Shale

Yellowish brown, stained and streaked dark greyish brown, highly tomoderately weathered, very closely to closely jo inted, very soft to softrock strength improving with depth, SHALE. Dwyka Formation.

Scale1:20


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0.50

0.00

0.70

Slightly moist, greyish brown to brown, firm, silty CLAY. Colluvium.

Slightly moist, yellowish brown and greyish brown, firm to stiff, silty CLAYcontaining weathered shale gravel. Residual Shale.


Scale1:20


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0.60

0.00

0.80

1.10

Slightly moist, greyish brown to brown, firm, silty CLAY. Colluvium.

Slightly moist, yellowish brown and greyish brown, firm to stiff, silty CLAY

containing weathered shale gravel. Residual Shale.

Yellowish brown, stained and streaked dark greyish brown, highly tomoderately weathered, very closely to closely jo inted, very soft to softrock strength improving With depth, SHALE. Dwyka Formation

Scale1:20

NOTES



3) No sidewall collapse.


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0.30

0.00

1.10

Dry to slightly moist, greyish brown, firm to stiff, sandy CLAY containingferruginised nodules. Colluvium.

Yellowish brown, stained dark brown streaked dark greyish brown, highlyweathered, very closely to closely jointed, very soft to soft rock strengthimproving with depth, SHALE. Dwyka Formation.

Scale1:20

NOTES


2) Difficult excavation of a TLB machine on weathered shale.




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0.30

0.00

1.90


Yellowish brown, stained dark brown streaked dark greyish brown, highlyweathered, very closely to closely jointed, very soft to soft rock strengthimproving with depth, SHALE. Dwyka Formation

Scale1:20

NOTES

1) Refusal depth of a TLB machine at 1 9m on weathered shale


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0.50

0.00

1.20

1.50


Slightly moist, dark brown, mottled yellow and red, stiff to very stiff,gravelly silty CLAY. Gravel components comprising ferruginised nodules.

Ferruginised Horizon.

Yellowish brown, stained dark brown, streaked dark greyish brown, highlyweathered, very closely to closely jointed, very soft to soft rock strengthimproving with depth, SHALE. Dwyka Formation

Scale1:20

NOTES





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0.60

0.00

1.30

1.60


Slightly moist, dark brown, mottled yellow and red, stiff to very stiff,

gravelly silty CLAY. Gravel components comprising ferruginised nodules.Ferruginised Horizon.

Yellowish brown, stained dark brown streaked dark greyish brown, highlyweathered, very closely to closely jointed very soft to soft rock strength

improving with depth, SHALE. Dwyka Formation

Scale1:20

NOTES

1) Refusal of a TLB machine at 1.60m on weathered shale.



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0.4--1.3m





0.40

0.00

1.30

1.50


Slightly moist, dark reddish brown, mottled yellowish brown, stiff to verystiff, silty CLAY containing occasional ferruginised nodules. ResidualShale.

Yellowish brown, stained dark brown, streaked dark greyish brown, highlyweathered, very closely to closely jointed, very soft to soft rock strength

improving with depth, SHALE. Dwyka Formation

Scale1:20

NOTES

1) Refusal depth of a TLB at 1.5m on weathered shale.



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0.50

0.00

2.00


Yellowish brown, stained dark brown, streaked dark greyish brown, highlyweathered, very closely to closely jointed, very soft to soft rock strengthimproving with depth, SHALE. Dwyka Formation

Scale1:20

NOTES


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0.70

0.00

1.50

2.20


Slightly moist, dark brown, mottled yellow and red, stiff to very stiff,gravelly silty CLAY. Gravel components comprising ferruginised nodules.Ferruginised Horizon.

Slightly moist, yellowish brown, streaked dark greyish brown, stiff to verystiff, gravelly CLAY. Gravel components comprising weathered shale.Completely Weathered Shale.

Scale1:20


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0.50

0.00

1.20

1.60

Dry to slightly moist, greyish brown, firm to stiff, fissured, silty CLAY.Colluvium.

Slightly moist, brown to greyish brown, mottled dark greyish brown, firm tostiff, silty CLAY. Residual Shale.

Yellowish brown, stained dark greyish brown, highly weathered, veryclosely to closely jointed, very soft to soft rock strength improving withdepth, SHALE. Dwyka Formation

Scale1:20

NOTES

1) Refusal depth of a TLB machine at 1.60 on weathered shale.

2) No Groundwater seepage.


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0.60

0.00

1.20

2.10


Slightly moist, brown to greyish brown, mottled dark greyish brown, firm to

stiff, silty CLAY. Residual Shale.

Yellowish brown, stained dark greyish brown, highly weathered, veryclosely to closely jointed, very soft to soft rock strength improving withdepth, SHALE. Dwyka Formation

Scale1:20


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0.7--1.5m





0.70

0.00

1.70


Slightly moist, brown to greyish brown, mottled dark greyish brown, firm tostiff, silty CLAY. Residual Shale.

Slightly moist, yellowish brown, stained dark reddish brown, stiff clayeySILT. Completely Weathered Shale.

Scale1:20


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2.0m





0.10

0.00

0.20

1.40

2.00

Slightly moist, yellowish grey, loose, silty clayey GRAVEL. Gravelcomponents comprising shale. Fill.

Moist brown, very loose, coarse to very coarse grained, very micaceous,SAND. Fill.

Slightly moist, yellowish brown, brown, dark greyish brown and darkbrown, stiff to very stiff, gravelly silty CLAY containing refuse. Gravelcomponents comprising weathered shale. Fill.

Slightly moist, orangey pinkish brown, streaked and mottled dark greyish

brown, stiff to very stiff, silty CLAY. Completely Weathered Sandstone.

Scale

1:20

NOTES


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0.70

0.00

2.00

Dry to slightly moist, light brown and greyish brown, loose to mediumdense, medium grained, SAND containing numerous shale gravel. Fill.

Slightly moist, dark reddish brown, mottled orangey brown, firm to stiff,silty CLAY.

Slightly moist, orangey pinkish brown, streaked and mottled dark greyishbrown, stiff to very stiff, silty CLAY. Completely Weathered Sandstone.

Scale

1:20


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0.5--1.2m





0.50

0.00

Dry to slightly moist, dark reddish brown, brown and dark greyish brown,firm to stiff, gravelly silty CLAY. Fill.

Slightly moist, dark brown becoming orangey brown with depth, mottledand speckled dark greyish brown, stiff, silty CLAY. Residual Shale.

Scale

1:20


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2.0m1.1--2.80m





1.10

0.00

Slightly moist, greyish brown, firm to stiff, silty CLAY with top 0.2mcontaining root materials. Colluvium.

Slightly moist to moist dark brown and reddish brown, mottled greyishbrown, firm to stiff, silty CLAY containing ferruginised nodules.Ferruginised Horizon.

Scale

1:20


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0.30

0.00

1.00

1.60

Slightly moist, greyish brown, firm, silty sandy CLAY containing numerousgravel. Fill.

Slightly moist, light grey, mottled yellow, loose to medium dense, mediumto coarse grained, slightly micaceous, silty clayey SAND. Fill

Slightly moist, greyish brown to brown, firm, sandy CLAY. Colluvium

Slightly moist to moist, dark brown and reddish brown, mottled greyishbrown, firm to stiff, silty CLAY containing ferruginised nodules whichdecreases with increase in depth. Ferruginised Horizon.

Scale

1:20


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1.10

0.00

2.00

Dry to slightly moist, brown, loose to medium dense, medium grained,gravelly SAND containing a layer of gravel between 1.0 and 1.1m. Fill.

Slightly moist to moist, dark brown and reddish brown, mottled greyishbrown, firm to stiff, silty CLAY containing ferruginised nodules.Ferruginised Horizon.

Scale

1:20

NOTES


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1.6--1.8m





0.60

0.00

1.60

1.80

Slightly moist, greyish brown, firm to stiff, silty CLAY. Colluvium.

Slightly moist, orangey reddish brown, mottled black and yellow, dense tovery dense, silty clayey GRAVEL. Gravel components comprisingferruginised nodules. Ferruginised Horizon.

Slightly moist, yellowish brown, mottled dark greyish brown, stiff, gravellyclayey SILT. Gravel components comprising weathered shale. ResidualShale.

Yellowish brown, stained dark greyish brown and reddish brown, highlyweathered with completely weathered zones, very closely to closely

jointed (recovered as gravel), very soft to soft rock strength improving with

Scale

1:20


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1.6--2.0m





0.60

0.00

1.60

Dry to slightly moist, greyish brown, firm to stiff, fissured, silty CLAY.Colluvium

Slightly moist, reddish brown mottled and speckled yellow, firm to stiff,silty CLAY.

Slightly moist, light orangey reddish brown mottled and speckledyellowish brown, firm to stiff, SILT. Completely Weathered Sandstone.

Scale

1:20

C


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0.60

0.00

1.50

Dry to slightly moist, greyish brown, medium dense, medium grained, siltySAND containing gravel. Fill

Slightly moist, orangey brown mottled and speckled dark greyish brown,firm to stiff, gravelly silty CLAY. Gravel components comprisingweathered shale. Residual Shale.

Orangey brown, stained and streaked dark greyish brown, highly tocompletely weathered (but mostly completely weathered), very soft tosoftrock strength, SHALE. Dwyka Formation.

Scale

1:20

PREBEN NAIDOO & SSOCIATES TP30TP30


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1.5--2.0m





0.60

0.00

1.20

1.50

2.20

Slightly moist, greyish brown, firm to stiff, gravelly silty CLAY. Colluvium.

Slightly moist, yellowish orangey brown, mottled yellowish brown and lightgrey, medium dense silty clayey GRAVEL. Gravel componentscomprising shale. Residual Shale.

Slightly moist, reddish brown to dark orangey brown, mottled andspeckled yellowish brown, firm to stiff, gravelly silty CLAY. Gravelcomponents comprising weathered shale and ferruginised nodules.

Residual Shale.

Slightly moist, dark orangey yellowish brown, firm to stiff, gravelly clayeySILT. Gravel components comprising shale. Completely Weathered Shale.

Scale

1:20

PREBEN NAIDOO & SSOCIATES HOLE N TP31HOLE N TP31


51/112

0.2--1.0m





0.20

0.00

1.00

Slightly moist, dark brown mottled yellowish brown, firm, silty CLAY. Fill

Slightly moist, greyish brown, medium dense, medium grained, clayeySAND. Colluvium.

Slightly most, dark brown and dark reddish brown, mottled dark greyishbrown, dense to very dense, clayey GRAVEL. Gravel componentscomprising ferruginised nodules. Feruginised Horizon.

Scale

1:20

PREBEN NAIDOO & aSSOCIATES HOLE N TP32HOLE N TP32


52/112





0.50

0.00

0.70

1.40

Dry to slightly moist, greyish brown to brown, firm, silty CLAY containingshale gravel. Colluvium.

Slightly moist, greyish brown, medium dense to dense, silty clayeyGRAVEL. Gravel components comprising ferruginised nodules.Ferruginised. Horizon

Slightly moist, brown to dark brown, mottled yellowish brown, stiff to verystiff, gravelly silty CLAY. Gravel components comprising ferruginisednodules.

Yellowish brown, stained dark greyish brown, highly to completely

weathered, very closely to closely jointed, very soft to soft rock strengthimproving with depth, SHALE. Dwyka Formation.

Scale

1:20

PREBEN NAIDOO & aSSOCIATES HOLE No: TP33HOLE No: TP33


53/112





0.50

0.00

1.10

1.80

2.20

Slightly moist, greyish brown, medium dense, silty SAND containingferruginised nodules. Colluvium.

Slightly moist, yellowish brown and greyish brown, firm to stiff, gravellyCLAY. Gravel components comprising weathered shale. Residual Shale.

Yellowish brown, stained dark greyish brown and dark brown, highly tocompletely weathered, very closely to closely jointed, very soft to soft rockstrength, SHALE. Dwyka Formation.

Dark brown and yellowish brown, highly weathered, very closely to closelyjointed, very soft to soft rock strength improving with depth SHALE.

Scale

1:20



54/112





0.50

0.00

1.80

Dry to slightly moist, greyish brown, firm, fissured, silty CLAY containingoccasional shale gravel. Colluvium.

Dark brown, stained orangey brown and dark greyish brown, highly tomoderately weathered, very closely to closely jo inted, very soft to softrock strength improving with depth, SHALE. Dwyka Formation

Scale

1:20

NOTES

1) Refusal depth of a TLB machine at 1.80 on weathered shale.



55/112





0.20

0.00

0.60

1.90

Dry brown, medium dense, gravelly silty SAND. Fill.

Slightly moist, greyish brown, firm, fissured, silty CLAY. Colluvium.

Slightly moist, dark reddish brown, mottled and speckled dark greyishbrown and yellowish brown, stiff to very stiff, gravelly silty CLAY. Gravel

components comprising ferruginised nodules. Ferruginised Horizon.

Slightly moist, light brown, mottled and speckled dark greyish brown andyellowish brown, stiff to very stiff, gravelly silty CLAY. Gravel componentscomprising ferruginised nodules. Ferruginised Horizon.

Scale

1:20



56/112





0.40

0.00

1.00

Dry, orangey yellowish brown and light grey, firm to stiff, gravelly siltyCLAY. Gravel components comprising 40% shale. Fill.

Purplish brown and dark brown, mottled and speckled light grey, highly tomoderately weathered, very closely to closely jointed, soft to medium hardrock strength, Quartz Sandstone. Dwyka Formation.

Scale

1:20

NOTES

1) Refusal depth of a TLB machine at 1.0m on weathered sandstone.



PREBEN NAIDOO & aSSOCIATES HOLE No:TP37HOLE No:TP37


57/112

CAMPERDOWN SEWER AND RETICULATION NETWORKAND WASTE WATER TREATMENT PLANT

Sheet 1 of 1Sheet 1 of 1


0.70

0.00

1.70

Slightly moist, dark greyish brown, firm, fissured, silty CLAY containingroot materials. Colluvium.

Slightly moist, dark reddish brown, mottled and speckled yellowish brownand dark greyish brown, stiff to very stiff, silty CLAY containingferruginised nodules. Residual Sandstone.

Slightly moist dark orangey brown, mottled yellowish brown, stiff to verystiff, clayey SILT. Completely Weathered Sandstone.

Scale

1:20



58/112




0.70

0.00

1.40


Slightly moist, dark brown, mottled reddish brown and yellowish brown,firm to stiff, silty CLAY. Residual Shale.

Slightly moist, orangey yellowish brown, mottled light grey and dark

greyish brown, stiff to very stiff, clayey SILT containing weathered shalegravel. Residual shale to Completely Weathered Shale.

Scale

1:20



59/112




0.15

0.00

1.20

Dry greyish brown, mottled yellowish brown, firm, silty CLAY. Fill.

Slightly moist, greyish brown, firm to stiff, silty CLAY. Colluvium.

Slightly moist, dark reddish brown, stiff to very stiff, gravelly silty CLAY.Gravel components comprising ferruginised nodules.

Scale

1:20



60/112




0.10

0.00

0.60

1.40

Dry greyish brown to brown, loose, medium grained, SAND. Fill.

Slightly moist, dark greyish brown, firm to stiff, fissured, silty SANDcontaining root materials. Colluvium.

Slightly moist, dark brown to reddish brown and dark greyish brown,mottled yellowish brown, firm to stiff, gravelly silty CLAY. Gravel

components comprising ferruginised nodules. Ferruginised Horizon.

Slightly moist, dark orangey brown, stiff to very stff, silty CLAY. Residual

Sandstone.

Scale

1:20

PREBEN NAIDOO & aSSOCIATESCAMPERDOWN SEWER AND RETICULATION NETWORK

HOLE No:TP41HOLE No:TP41


61/112




0.30

0.00

0.70

1.70

Dry, greyish brown, medium dense to dense, fine to medium grained,gravelly SAND. Fill.

Slightly moist, dark reddish brown, mottled and speckled dark greyishbrown and orangey brown, firm to stiff, gravelly silty CLAY. Gravelcomponents comprising ferruginised nodules.

Slightly moist, orangey yellowish brown, mottled dark greyish brown

speckled light grey, stiff, clayey SILT. Residual sandstone to CompletelyWeathered Sandstone.

Slightly moist, light orangey yellowish brown, mottled dark greyish brownspeckled light grey, stiff to very stiff, clayey SILT. Completely WeatheredSandstone.

Scale

1:20


HOLE No:TP42HOLE No:TP42


62/112




0.70

0.00

1.40

1.70

1.90

Slightly moist, dark greyish brown, firm to stiff, fissured, silty CLAYcontaining root materials. Colluvium.

Slightly moist, reddish brown, mottled yellow, stiff, silty CLAY containing

occasional ferruginised nodules.

Slightly moist, light yellowish brown and light grey, mottled dark greyish

brown, stiff to very stiff, gravelly clayey SILT. Gravel componentscomprising weathered shale. Residual Shale.

Yellowish brown, stained dark greyish brown and orangey brown, highlyto completely weathered, very closely to closely jointed, very soft tomedium hard rock strength, SHALE. Dwyka Formation

Scale

1:20

NOTES


HOLE No:TP43Sh t 1 f 1

HOLE No:TP43Sh t 1 f 1


63/112




0.30

0.00

0.70

Dry to slightly moist, brown, loose to medium dense, fine to mediumgrained, silty SAND containing shale gravel. Colluvium.

Dark brown to yellowish brown, blotched green and yellow, highly tomoderately weathered, very closely to closely jointed, very soft to mediumhard rock strength, SHALE. Dwyka Formation

Scale

1:20

NOTES

1) Refusal of a TLB machine at 0.70m on weathered shale.







64/112




1.10

0.00

1.50

1.90

Slightly moist greyish brown, firm to stiff, silty CLAY, with top 0.2mcontaining numerous root materials. Colluvium.

Slightly moist, dark reddish brown, speckled dark greyish brown, stiff tovery stiff, gravelly silty CLAY. Gravel components comprising ferruginisednodules. Ferruginised Horizon.

Slightly moist, reddish brown, mottled and speckled dark greyish brownand orangey brown, very stiff, silty clayey GRAVEL. Gravel componentscomprising ferruginised nodules. Ferruginised Horizon.

Slightly moist to moist, dark reddish brown speckled dark greyish brown,stiff to very stiff, gravelly silty CLAY. Gravel components comprisingferruginised nodules. Ferruginised Horizon.

Scale

1:20





65/112




0.30

0.00

0.90

1.50

Sligthly moist, dark brown, firm, silty CLAY containing occasional shalegravel. Fill.

Slightly moist, greyish brown, firm, fissured, silty CLAY containingoccasional root materials. Colluvium.

Slightly moist, dark reddish brown, mottled and speckled dark greyishbrown and orangey yellowish brown, firm to stiff, gravelly silty CLAY.Gravel components comprising ferruginised nodules.

Slightly moist, dark reddish brown mottled and speckled orangey brown,stiff to very stiff, silty CLAY containing ferruginised nodules but less thanabove.

Scale

1:20





66/112




0.90

0.00

1.50

Dry to slightly moist, greyish brown, firm, sandy CLAY. Colluvium.

Slightly moist, dark brown mottled dark greyish brown, firm to stiffimproving with depth, gravelly silty CLAY. Gravel components comprisingferruginised nodules. Ferruginised Horizon.

Sligthly moist, yellowish brown to orangey brown, mottled and blotcheddark greyish brown, very stiff to hard, cemented, gravelly silty CLAY.Ferruginised Horizon.

Scale

1:20





67/112




0.90

0.00

Slightly moist, dark greyish brown, firm to stiff, sandy silty CLAY.Colluvium.

Slightly moist, brown, mottled dark greyish brown, firm to stiff, improvingwith depth, gravelly silty CLAY. Gravel components comprisingferruginised nodules.

Scale

1:20





68/112

AND WASTE WATER TREATMENT PLANTJOB NUMBER:41151JOB NUMBER:41151

1.00

0.00

1.50

Slightly moist, greyish brown, firm to stiff, sandy CLAY. Colluvium.

Slightly moist, dark brown, mottled and speckled light grey and darkgreyish brown, stiff, gravelly silty CLAY. Gravel components comprisingferruginised nodules.

Slightly moist, light grey and dark brown, mottled dark greyish brown andyellowish brown, dense to very dense, silty clayey GRAVEL. Gravelcomponents comprising ferruginised nodules. Ferruginised Horizon.

Scale

1:20





69/112


0.50

0.00

1.10

1.80

Slightly moist, greyish brown, firm, gravelly silty CLAY. Fill.

Slightly moist, dark greyish brown, firm to stiff, silty CLAY. Colluvium.

Slightly moist, dark orangey reddish brown, firm to stiff, silty CLAYcontaining ferruginised nodules.

Slightly moist, yellowish grey, speckled light grey and dark greyish brown,stiff to very stiff, gravelly silty CLAY. Gravel components comprisingweathered shale. Residual Shale.

Scale

1:20





70/112


0.70

0.00

1.40

Slightly moist, dark reddish brown, yellowish brown and dark greyishbrown, stiff to very stiff, gravelly silty CLAY. Gravel componentscomprising weathered shale. Fill.

Slightly moist, greyish brown, firm to stiff, sandy CLAY. Organic.

Colluvium.

Slightly moist, dark reddish brown, light grey and dark greyish brown ,stiff

to very stiff, gravelly silty CLAY. Gravel components comprisingweathered shale and ferruginised nodules.

Scale

1:20





71/112


0.80

0.00Slightly moist, greyish brown, firm, sandy silty CLAY containing refuse. Fill.

Scale

1:20

NOTES

1) Final depth of a TLB machine at 0.8m, cable encounntered.







72/112


0.60

0.00

1.10

1.60

Slightly moist, dark brown, mottled yellowish brown, firm, gravelly siltyCLAY. Gravel components comprising shale. Fill.

Slightly moist, greyish brown, firm, silty CLAY containing bottles and otherrefuse. Fill.

Slightly moist, greyish brown to brown, medium dense, medium grained,silty SAND containing occasional gravel. Fill.

Slightly moist, reddish brown, mottled and speckled dark greyish brownand yellow, stiff to very stiff, gravelly silty CLAY. Gravel componentscomprising ferruginised nodules. Ferruginised Horizon.

Scale

1:20


16 APPENDIX C DCP TEST RESULTS


73/112

16. APPENDIX C: DCP TEST RESULTS

EASBP FROM DCP l


74/112

EASBP FROM DCP, clayJob Name Camperdown Sewer Treatment Plant

File No: if needed Job No: 41151 Date of Test: 21-Jul-11

DCP No: 1 Location: Adjacent to TP1

note: EASBP= SuxNc/FOS Su from N via T3 of Geotermin ology

Penetration Guide

SPT N DCP

mm/blow DN consistency

< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


75/112





Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


76/112





Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


77/112



DCP No: 4 Location: Adjacent to TP4note: EASBP= SuxNc/FOS Su from N via T3 of Geotermin ology

Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


78/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


79/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


80/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


81/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


82/112

, yJob Name Camperdown Sewer Treatment Plant


DCP No: 9 Location: Adjacent to TP9note: EASBP= SuxNc/FOS Su from N via T3 ofGeotermin ology

Penetration Guide

SPT N DCP


< 5 132-210 Very Dense

5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


83/112

, yJob Name Camperdown Sewer Treatment Plant



Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


84/112

yJob Name Camperdown Sewer Treatment Plant



Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


85/112

Job Name Camperdown Sewer Treatment Plant


DCP No: 12 Location: Adjacent to TP12note: EASBP= SuxNc/FOS Su from N via T3 ofGeotermin ology

Penetration Guide

SPT N DCP


< 5 132-210 Very Dense

5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


86/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


87/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


88/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


89/112




Penetration Guide

SPT N DCP


< 5 132-210 Very Dense5 - 10 78-132 Dense

10 - 30 25-78 Med Dense

30 - 75 10 25 Loose

75 -100


90/112


91/112


92/112


93/112


94/112


95/112


96/112


97/112


98/112


99/112


100/112


101/112


102/112


103/112


18. APPENDIX E: GEOLOGICAL LONG SECTIONS


104/112

Scale: Hor. 1:7500

V 1 100

Trial Pit No. :

1

2

(m)

CAMPERDOWN BULK SEWER RETICULATION NETWORK

GEOLOGICAL LONGITUDINAL SECTION

30 32' 24.61"TP 17 TP 18 TP 19 TP 20

GPS Co-Ord (E)

GPS Co-Ord (S) 29 44' 10.04"

30 32' 26.03"

29 44' 01.77"

30 32' 25.26"

29 43' 51.27"

29 43' 57.56"

30 32' 10.14"

1.6


105/112

Ver. 1:100

Comments

Bedding

Topography

3

Legend

Samples

Profile

Soft Excavation

Intermediate Excavation

Hard Excavation

>40% Boulders

0.5

Drytoslightlymoist,greyishbrown,

firmtostiff,fissured,silty

CLAY.

Colluvium.

1.2S

lightlymoist,browntogreyishbrown,

mottleddarkgreyish

brown,

firmtostiff,

siltyCLAY.

ResidualShale.

1.6Y

ellowishbrown,

staineddarkgreyishbrown,

highlyweath

ered,

v

erycloselytocloselyjointed,

verysofttosoftrockstreng

th

improvingwithdepth-

SHALE.

DwykaFormation

0.6


firmtostiff,fissured,silty

CLAY.

Colluvium.

1.2

Slightlymoist,browntogreyishbrown,m

ottleddarkgreyis

h

brown,

firmtostiff,

siltyCLAY.

ResidualShale.

2.1Y

ellowishbrown,

staineddarkgreyishbrown,

highly

weathered,

verycloselytocloselyjointed,v

erysofttosoft

rockstrengthimprovingwithdepth,

SHALE.

DwykaForm

ation

0.1


firmtostiff,

fissured,

silty

CLAY.

Colluvium.

1.7

Slightlymoist,browntogreyishbrown,

mottleddarkgreyish

brown,

firmtostiff,

siltyCLAY.

ResidualShale.

2.5

Slightlymoist,yellowishbrown,

staineddarkreddishbrow

n,

stiffclayeySILT.

CompletelyWeatheredShale.

0.1

Slightlymoist,yellowishgrey,

loose,

siltyclayeyGRAVEL.

Gravelcomponentscomprisingshale.

Fill.

0.2

Moistbrown,

veryloose,

coarsetoverycoarsegrained,

verymicaceous,SAND.

Fill.

1.4

Slightlymoist,yellowishbrown,

brown,

darkgreyish

brownanddarkbrown,

stifftoverystiff,

gravellysilty

CLAYcontainingrefuse.

Gravelcomponentscomprising

weatheredshale.

Fill.

2.0

Slightlymoist,orangeypinkishbrown,

streakedandmottled

darkgreyishbrown,

stifftoverystiff,siltyCLAY.

CompletelyWeatheredSandstone.

---0,7 - 1,5 Indicator

Sampled between--- ---

Very Gently Sloping Very Gently Sloping Very Gently Sloping Flat

Main Fill Only Main Fill Only Main Fill Only Main Fill Only

--- ---Ground Water

Seepage @ 2,0m---

Page 1 of 8

TP

17

TP

18

TP

19

TP

20

Scale: Hor. 1:7500

Ver 1 100

Trial Pit No. :

1

2

(m)



30 32' 10.14"TP 21 TP 22 TP 23

GPS Co-Ord (E)

GPS Co-Ord (S) 29 43' 57.56"

30 32' 03.11"

29 43' 55.29"

30 32' 25.79"

29 43' 47.86"


106/112

Ver. 1:100

Comments

Bedding

Topography

3

Legend

Samples

Profile

Soft Excavation


Hard Excavation

>40% Boulders


Sampled between--- ---

Flat Flat Flat

Main Fill Only Main Fill Only Main Fill Only

--- --- ---

0.7

Drytoslightlymoist,lightbrownandgreyish

brown,

loosetomediumdense,

mediumgrained,

SANDcontainingnumerousshalegravel.Fill.

2.0

Slightlymoist,darkreddishbrown,

mottled

orangeybrown,

firmtostiff,

siltyCLAY.

2.6


streaked

andmottleddarkgreyishbrown,

stiffToverystiff,

siltyCLAY.

CompletelyWeatheredSandstone.

0.8

Drytoslightlymoist,darkreddishbrown,

brown

anddarkgreyishbrown,

firmtostiff,

gravellysilty

CLAY.

Fill.

1.4

Slightlymoist,greyishbrown,

firmtostiff,

fissured,

siltyCLAY.

Colluvium.

2.0


mottleddark

greyishbrownandpinkishorange,

stiff,

siltyCLAY

containingferuginisednodules.

FerruginisedHorizon.

2.4


streakedand

mottleddarkgreyishbrown,

stifftoverystiff,

silty

CLAY.

CompletelyWeatheredsandstone.

0.5

Drytoslightlymoist,darkreddishbrown,

brown


firmtostiff,

gravellysilty

CLAY.

Fill.

2.6

Slightlymoist,darkbrownbecomingorangeybrown

withdepth,

mottledandspeckleddarkgreyishbrown,

stiff,

siltyCLAY.

ResidualShale.

Page 2 of 8

TP

21

TP

22

TP

23

Scale: Hor. 1:7500

Ver 1:100

Trial Pit No. :

1

2

(m)

CAMPERDOWN BULK SEWER RETICULATION NETWORKGEOLOGICAL LONGITUDINAL SECTION

30 32' 39.72"TP 24

GPS Co-Ord (E)

GPS Co-Ord (S) 29 43' 48.36"

30 32' 38.62"

29 43' 43.26"

30 32' 19.57"

29 43' 37.28"

TP 25 TP 26 TP 27 TP 28 TP 29

30 32' 31.60"

29 43' 47.29"

30 32' 54.90"

29 43' 44.17"

30 32' 27.97"

29 43' 41.77"


107/112

Ver. 1:100

Comments

Bedding

Topography

3

Legend

Samples

Profile

Soft Excavation


Hard Excavation

>40% Boulders


Sampled between---

Flat Flat Flat


--- --- ---

1.1Slightlymoist,g

reyishbrown,f

irmtostiff,s

iltyCLAYwithtop

0.2

m

containingrootmaterials.C

olluvium.

2.8Slightlymoisttomoistdarkbrownandreddishbrown,

mottledgreyishbrown,firmtostiff,s

iltyCLAYcontaining

ferruginisednodules.


0.3


firm,

siltysandyCLAY

containingnumerousgravel.Fill.

1.0

Slightlymoist,lightgrey,

mottledyellow,

looseto

mediumdense,

mediumtocoarsegrained,

slightly

micaceous,

siltyclayeySAND.

Fill

1.6

Slightlymoist,greyishbrowntobrown,

firm,

sandy

CLAY.

Colluvium

2.7

Slightlymoisttomoist,darkbrownandreddishbrown,

mottledgreyishbrown,

firmtostiff,siltyCLAY

containingferruginisednoduleswhichdecreaseswith

increaseindepth.


---

TP

24

TP

25

1.1Drytoslightlymoist,b

rown,l

oosetomediumdensemedium

grained,gravellySANDcontainingalayerofgravelbetween

1.0and1.1m.F

ill.

2.0

Slightlymoisttomoist,d

arkbrownandreddishbrown,mottled

greyishbrown,firmtostiff,s

iltyCLAYcontainingferruginised

nodules.F

erruginisedHorizon.

TP

26

0.6

Slightlymoist,g

reyishbrown,f

irmtostiff,s

iltyCLAY.C

olluvium.

1.6

Slightlymoist,orangeyreddishbrown,mottledblackandyellow,

densetoverydense,siltyclayeyGRAVEL.Gravelcomponents

comprisingferruginisednodules.FerruginisedHorizon.

1.8

Slightlymoist,yellowishbrown,mottleddarkgreyishbrown,stiff,

gravellyclayeySILT.G

ravelcomponentscomprisingweathered

shale.R

esidualShale.

2.6Yellowishbrown,s

taineddarkgreyishbrownandreddishbrown,

highlyweatheredwithcompletelyweatheredzones,veryclosely

tocloselyjointed(recoveredasgravel),verysofttosoftrock

strengthimprovingwithdepth,SHALE.

TP

27

0.6Drytoslightlymoist,g

reyishbrown,firmtostiff,f

issured,silty

CLAY.C

olluvium

1.6Slightlymoist,r

eddishbrownmottledandspeckledyellow,

firmtostiff,s

iltyCLAY.

2.9Slightlymoist,lightorangeyreddishbrownmottledandspeckled

yellowishbrown,f

irmtostiff,S

ILT.C

ompletelyWeathered

S

andstone

TP

28

0.6

Drytoslightlymoist,g

reyishbrown,mediumdense,medium

grained,s

iltySANDcontaininggravel.F

ill

1.5Slightlymoist,orangeybrownmottledandspeckleddarkgreyish

brown,f

irmtostiff,g

ravellysiltyCLAY.G

ravelcomponents

comprisingweatheredshale.ResidualShale.

2.9

Orangeybrown,s

tainedandstreakeddarkgreyishbrown,

highlytocompletelyweathered(butmostlycompletely

weathered),v

erysofttosoftrockstrength,S

HALE.D

wyka

Formation.

TP

29

0,5 - 1,2 Indicator

Sampled between

1,6 - 2,0 Indicator

Sampled between

Flat Flat Flat

@ 2,0m

Groundwater Seepage


--- ---

Page 3 of 8

Scale: Hor. 1:7500

Ver. 1:100

Trial Pit No. :

1

2

3

(m)

CAMPERDOWN BULK SEWER RETICULATION NETWORKGEOLOGICAL LONGITUDINAL SECTION

30 32' 14.75"TP 30

GPS Co-Ord (E)

GPS Co-Ord (S) 29 43' 31.95"

30 32' 05.45"

29 43' 43.83"

TP 31 TP 32

30 32' 18.76"

29 43' 35.89"

30 32' 09.38"

29 43' 34.62"

30 31' 55.10"

29 43' 42.23"

TP 33 TP 34


108/112

Comments

Bedding

Topography

3

Legend

Samples

Profile

Soft Excavation


Hard Excavation

>40% Boulders

Flat Flat

Main Fill Only Main Fill Only

TP

30

TP

31

TP

32

TP

33

TP

34

0,5 - 2,0m Indicator

Sampled between

Flat Flat Flat


0.6

Slightlymoist

,greyishbrown

,firmtostiff

,gravellysiltyCLAY

.Colluv

ium

.

1.2

Slightlymoist

,yellowishorangeybrown,mottledyellowishbrownan

d

lightgrey,mediumdensesiltyclayeyGRAVEL.Gravelcomponents

comprisingshale.ResidualShale

.

1.5

Slightlymoist

,reddishbrowntodarkorangeybrown,mottledand

speckledyellowishbrown

,firmtostiff

,gravellysiltyCLAY

.Gravel

componentscomprisingweatheredshaleandferruginisednodules.

ResidualShale

.

2.2

Slightlymoist

,darkorangeyyellowishbrown,firmtostiff

,gravellyclayey

SILT

.Gravelcomponentscomprisingshale.CompletelyWeathere

d

Shale

.

2.8

Darkyellowishorangeybrown

,highlytocompletelyweathered

,very

closelytocloselyjointed

,verysofttosoftrockstrengthimprovingw

ith

depth,SHALE

.DwykaFormation

0.2

Slightlymoist,darkbrownmottledyellowishbrown

,firm

,silty

CLAY

.Fill

1.0

Slightlymoist,greyishbrown

,mediumdense

,medium

grained

,clayeySAND

.Colluvium

.

2.7

Slightlymost,darkbrownanddarkreddishbrown

,mottled

darkgreyishbrown

,densetoverydense

,clayeyGRAVEL

.

Gravelcomponentscomprisingferruginisednodules.

FeruginisedHorizon

.

0.5

Drytoslightlymois,tgreyishbrowntobrown,firm

,siltyCLAYconta

ining

shalegravel.Colluvium

.

0.7

Slightlymoist,greyishbrown

,mediumdensetodense,siltyclayey

GRAVEL

.Gravelcomponentscomprisingferruginisenodules.

Ferruginised.Horizon

1.4

Slightlymoist

,browntodarkbrown

,mottledyellowishbrown,stiffto

very

stiff

,gravellysiltyCLAY

.Gravelcomponentscomprisingferruginised

nodules.

2.6

Yellowishbrown,staineddarkgreyishbrown,highlytocompletely

weathered

,verycloselytocloselyjointed,verysofttosoftrock

strengthimprovingwithdepth,SHALE

.DwykaFormation.

0.5

Slightlymoist,greyishbrown,mediumdense,siltySANDcontainin

g

ferruginisednodules.Colluvium

.

1.1

Slightlymoist,yellowishbrownandgreyishbrown,firmtostiff

,grav

elly

CLAY

.Gravelcomponentscomprisingweatheredshale.Residua

lShale

.

1.8

Yellowishbrown,staineddarkgreyishbrownanddarkbrown,highlyto

completelyweathered,verycloselytocloselyjointed,verysofttosoft

rockstrength

,SHALE

.DwykaFormation.

2.2

Darkbrownandyellowishbrown,highlyweathered

,verycloselyto

closelyjointed

,verysofttosoftrockstrengthimprovingwithdepth

,

SHALE

.

0.5

Drytoslightlymoist,greyishbrown,firm

,fissured,siltyCLAYconta

ining

occasionalshalegravel

.Colluvium

.

1.8

Darkbrown

,stainedorangeybrownanddarkgreyishbrown,highlyto

moderatelyweathered,verycloselytocloselyjointed,verysofttos

oftrock

strengthimprovingwithdepth,SHALE

.DwykaFormation


Sampled between

Page 4 of 8

Scale: Hor. 1:7500

V 1 100

Trial Pit No. :

1

2

(m)



30 31' 52.65"TP 35

GPS Co-Ord (E)

GPS Co-Ord (S) 29 43' 31.51"

30 31 47.06"

29 43' 37.51"

TP 36 TP 37

30 31' 57.23"

29 43' 30.02"

30 31' 53.84"

29 43' 35.78

TP 38


109/112

Ver. 1:100

Comments

Bedding

Topography

3

Legend

Samples

Profile

Soft Excavation


Hard Excavation

>40% Boulders

Flat Flat


TP

35

TP

36

TP

37

TP

38


Sampled between

Flat Flat



Sampled between

0.2Drybrown,m

ediumdense,g

ravellysiltySAND.F

ill.

0.6Slightlymoist,g

reyishbrown,f

irm,f

issured,siltyCLAY.C

olluvium.

1.9

Slightlymoist,d

arkreddishbrown,m

ottledandspeckleddarkgreyish

br

ownandyellowishbrown,stifftoverystiff,g

ravellysiltyCLAY.G

ravel

co

mponentscomprisingferruginisednodules.F

erruginisedHorizon.

2.7Slightlymoist,l

ightbrown,m

ottledandspeckleddarkgreyishbrown

an

dyellowishbrown,s

tifftoverystiff,g

ravellysiltyCLAY.G

ravel

co

mponentscompris

0.4

D

ry,

orangeyyellowishbrownandlightgrey,firmtostiff,

g

ravellysiltyCLAY.

Gravelcomponentscomprising40%

s

hale.

Fill.

1.0

P

urplishbrownanddarkbrown,

mottledandspeckledlight

g

rey,

highlytomoderatelyweathered,

verycloselytoclose

ly

jointed,s

ofttomediumhardrockstrength,

Quartz

S

andstone.

DwykaFormation.

0.7S

lightlymoist,darkgreyishbrown,

firm,

fissured,

siltyCLA

Y

c

ontainingrootmaterials.

Colluvium.

1.7

S

lightlymoist,darkreddishbrown,

mottledandspeckled

y

ellowishbrownanddarkgreyishbrown,

stifftoverystiff,

s

iltyCLAYcontainingferruginisednodules.

ResidualSand

-

s

tone.

2.6S

lightlymoistdarkorangeybrown,

mottledyellowishbrow

n,

s

tifftoverystiff,

clayeySILT.

CompletelyWeathered

S

andstone.

0.7


firm,

siltyCLAY.

Colluvium.

1.4S

lightlymoist,darkbrown,

mottledreddishbrownand

yellowishbrown,

firmtostiff,siltyCLAY.

ResidualShale.

2.9

Slightlymoist,orangeyyellowishbrown,

mottledlightgrey


stifftoverystiff,clayeySILT

containingweatheredshalegravel.Residualshaleto

CompletelyWeatheredShale.

Page 5 of 8

Scale: Hor. 1:7500

Ver 1:100

Trial Pit No. :

1

2

(m)



30 31' 52.65"TP 39

GPS Co-Ord (E)

GPS Co-Ord (S) 29 43' 42.17"

TP 41 TP 43

30 31' 45.49"

29 43' 39.39"

30 31' 30.65"

29 43' 44.59"

TP 40 TP 42

30 31' 32.25"

29 43' 3537"

30 31' 35.35"

29 43' 41.70"


110/112

Ver. 1:100

Comments

Bedding

Topography

3

Legend

Samples

Profile

Soft Excavation


Hard Excavation

>40% Boulders

Flat

Main Fill Only

TP

39

TP4

0

TP

41

TP

42

Flat Flat


--- --- --- --- ---

0.15

Drygreyishbrown,

mottledyellowishbrown,

firm,

siltyCLAY.

Fill.

1.2


firmtostiff,siltyCLAY.

Colluvium.

2.6

Slightlymoist,darkreddishbrown,s

tifftoverystiff,gravelly

siltyCLAY.

Gravelcomponentscomprisingferruginised

nodules.

0.1

Drygreyishbrowntobrown,

loose,

mediumgrained,

SAN

D.

Fill.

0.6

Slightlymoist,darkgreyishbrown,

firmtostiff,fissured,s

ilty

SANDcontainingrootmaterials.

Colluvium.

1.4

Slightlymoist,darkbrowntoreddishbrownanddarkgreyish

brown,

mottledyellowishbrown,

firmtostiff,gravellysilty

CLAY.

Gravelcomponentscomprisingferruginisednodules.


2.8

Slightlymoist,darkorangeybrown,

stifftoverystff,

silty

C

LAY.

ResidualsandstonetoCompletelyWeathered

S

andstone.

0.3

Dry,

greyishbrown,

mediumdensetodense,

finetomedium

grained,

gravellySAND.

Fill.

0.7


mottledandspeckleddark

greyishbrownandorangeybrown,

firmtostiff,gravellysilty

CLAY.

Gravelcomponentscomp