BSCU Appendix 14.1 Geotechnical Baseline Report

A14 – Land Contamination A14.1 – Geotechnical Baseline Report (Hyder Consulting (UK) Limited)

A14.2 – Geotechnical Desk Study (Mott MacDonald)

A14.3 – Unexploded Ordnance Desk Study (MACC International)

A14.4 – Redevelopment of 81 King William Street (Wembley Laboratories Limited)

A14.5 – Redevelopment of 10 King William Street (Wimpey Laboratories Limited)

A14.6 – The Walbrook Development (Fugro Engineering Services Limited)

A14.7 – NM Rothschild Bank (Ground Investigations) (Norwest Holst Soil

Engineering Ltd)

A14.8 – The Walbrook Square Development (Soiltechnics)

A14.9 – Bank Station Capacity Upgrade – Abstraction and Historic Wells Current

Status (London Underground Limited)

A14.10 – Envirocheck Report (Landmark)

A14.1 – Geotechnical Baseline Report (Hyder Consulting (UK) Limited)

Bank Station Capacity Upgrade

Geotechnical Baseline Report

Report No 0011-UA04557-UP31R-02

LU Document No LUSTN-0008798-RPT-002364 v0.2

Date 3 October 2012

Hyder Consulting (UK) Limited

2212959

10 Medawar Road The Surrey Research Park Guildford Surrey GU2 7AR United Kingdom

Tel: +44 (0)1483 803 000

Fax: +44 (0)1483 532 801

www.hyderconsulting.com

HyderV

Bank Station Capacity Upgrade

Geotechnical Baseline Report

Author Keith Reeves

X

Checker Roger Barsby 0

Approver Nigel Hayward

Mo WIA

Report No 0011-UA04557-UP31R-02

Date 3 October 2012

This report has been prepared for in accordance with the

terms and conditions of appointment for the Bank Station

Capacity Upgrade Project. Hyder Consulting (UK) Limited

(2212959) cannot accept any responsibility for any use of or

reliance on the contents of this report by any third party.

Bank Station Capacity Upgrade�Geotechnical Baseline Report Hyder Consulting (UK) Limited-2212959 c:\documents and settings\keithreeves\Iocal settings\temporary internet files\content.outlook\bhs4dcxk\bScu gbr 02docx

Bank Station Capacity Upgrade—Geotechnical Baseline Report

Hyder Consulting (UK) Limited-2212959 Page i

CONTENTS

1 Introduction ....................................................................................... 1

2 Site Geological Characterisation........................................................ 3

2.1 Terminology ...................................................................................... 3

2.2 Geological Sequence ........................................................................ 3

2.3 Made Ground .................................................................................... 3

2.4 Alluvium ............................................................................................ 4

2.5 River Terrace Deposits ...................................................................... 4

2.6 London Clay Formation ..................................................................... 4

2.7 Lambeth Group, Thanet Sands Formation and Chalk Group ............... 4

2.8 Groundwater Conditions .................................................................... 4

3 Baseline Statements ......................................................................... 6

3.1 Man Made Features .......................................................................... 6

3.2 Geology .......................................................................................... 12

3.3 Strata Description ........................................................................... 12

3.4 Geological Features ........................................................................ 14

3.5 Groundwater ................................................................................... 15

References ............................................................................................... 18

Appendix 1 – Included Borehole Information ............................................. 19


Hyder Consulting (UK) Limited-2212959 Page 1

1 Introduction

This Geotechnical Baseline Report has been prepared for issue as part of the tender documents

as a contractual frame of reference for the ground.

The Baseline Statements in the report are not necessarily fact and the report does not provide a

warranty that the Baseline conditions will be encountered. The actual conditions encountered

during construction could be more or less favourable than the conditions described in the

Baseline Statements. The parameters provided in the report are not therefore ‘design

parameters’ and should not be adopted as such. Responsibility for design and construction

including the selection of ‘design parameters’ will lie with those organisations contracted for

those tasks. The Baseline Statements made in this Geotechnical Baseline Report may

contradict statements made elsewhere in the contract documents. They do not relieve the

Contractor of its health and safety responsibilities.

The report, including the Baseline Statements, has been prepared to reflect the Base Case

RIBA D design as described in the following reports:

• London Underground, Bank Station Capacity Upgrade – Base Case RIBA D Final report

– Volume 1, LUSTN-0008798-DOC-004307 v1.0, March 2012

• London Underground, Bank Station Capacity Upgrade – Base Case RIBA D Final report

– Volume 2, LUSTN-0008798-DOC-004468 v1.0, March 2012

The site area covered extends from the northern tie-in to the southern tie-in to the Northern Line

southbound tunnel and is illustrated on Figure 1.1.

The design to date has been progressed without project specific ground investigation being

undertaken. As a result there is little project specific information available to accurately

determine ‘design parameters’ for soils and groundwater conditions. Information contained

within this report, including the Baseline Statements, is based on information currently available

to LU. It may be contradicted or superseded either as a result of changes to the Base Case

RIBA D design or following the receipt of currently unavailable ground investigation data and

any project specific ground investigation. Records of the available ground investigation data

used to produce this report are provided in Appendix 1. The geotechnical desk study referred to

a number of site investigations for developments in the area. However, at the time of writing this

information had not been obtained, with the exception of those borehole logs available on the

British Geological Survey’s website. This website also contains records of a number of wells in

the area. These have not been included in Appendix 1 or used in the assessment given their

general lack of detailed soil descriptions.



Figure 1.1 Plan of Extent of Base Case RIBA D works

Northern Limit

of Works Southern Limit

of Works

Borehole

search area



2 Site Geological Characterisation

2.1 Terminology

In this report, the terms “fissure”, “fissures”, “fissured” and “fissuring” have been used to

describe all non-bedding related naturally occurring discontinuities (such as joints, shears etc.)

other than those directly associated with faulting.

In this report, coarse-grained soils are defined as those soils that consist of over about 65%

gravel and sand size particles. Conversely, fine-grained soils are defined as soils that consist of

more than about 35% clay and silt size particles.

In this report “works at the 10KWS site” has been used to describe shaft excavation and lining

work at 10 King William Street described in the Base Case RIBA D design.

In this report “remainder of the works” has been used to describe all underground excavation,

lining, settlement mitigation and treatment of foundation clashes described in the Base Case

RIBA D design, other than works at the 10KWS site.

In this report “the whole works” has been used to describe works at the 10KWS site and the

remainder of the works.

2.2 Geological Sequence

Site characterisation is based on information from the ground investigations listed in Section 3.

The geological sequence at the site is listed below; descriptions of each stratum are given in

Sections 2.2 to 2.6 and 3.3.1 to 3.3.4.

• Made Ground

• Alluvium

• River Terrace Deposits (Taplow Gravel Formation)

• London Clay Formation

• Lambeth Group

• Thanet Sand Formation

• Chalk Group

2.3 Made Ground

Towards the bank of the River Thames the Made Ground is associated with reclamation and

wharf construction and redevelopment over a prolonged period. The site area in general has

been subject to cycles of reconstruction since Roman times, dominated more recently by

backfilling of bomb craters, foundation and basement construction, highway development and

installation of utilities.

The range of material to be encountered is correspondingly varied, with borehole logs indicating

generally granular material to be dominant.



2.4 Alluvium

Alluvium is present adjacent to the River Thames as far north as Arthur Street and is also

associated with the former course of the River Walbrook, a tributary of the Thames.

Alluvium in the site area is composed of cohesive deposits.

2.5 River Terrace Deposits

River Terrace Deposits (Taplow Gravel Formation) are present across the site area site except

where removed or cut by the alluvial deposits of the Wallbrook valley. Locally they will be

absent due to excavation for basement construction.

Where present, they comprise very loose to very dense brown and black sands and fine to

coarse gravels locally with subordinate cohesive beds. The gravels are subangular to rounded

and the sand is fine to coarse

2.6 London Clay Formation

The London Clay Formation is present beneath the entire site area.

The London Clay Formation is heavily over consolidated and can be divided into a number of

units (King, 1981), with the lower units (A3 and A2) being more sandy than the upper units (A3

(II) and B). Insufficient project detail is currently available to assign the London Clay at the site

to a particular unit or units.

The London Clay Formation is generally firm becoming stiff to very stiff/hard with depth and is

brown where weathered but otherwise grey in colour. It is extremely closely fissured in places

with occasional partings of silt or fine sand. Some claystone nodules and the presence of

pyritised material and fossil shells have been noted.

2.7 Lambeth Group, Thanet Sands Formation and Chalk Group

These strata are present beneath the whole of the site area but are not anticipated to be

encountered during the proposed tunnelling works. The top of the Lambeth Group lies at

between 58m and 66m below existing ground level along the proposed new running tunnel

alignment.

2.8 Groundwater Conditions

Two aquifers are typically encountered in the Central London area, upper and lower, separated

by the London Clay Formation and cohesive layers of the Lambeth Group. The upper aquifer

occurs in the superficial deposits (River Terrace Deposits and granular Made Ground). The

lower, confined aquifer occurs in the deeper permeable strata comprising the Upnor Formation

(basal unit of the Lambeth Group), Thanet Sands Formation and the Chalk Group.

Dewatering of the lower aquifer (comprising the Chalk Group, Thanet Sand and Upnor

Formations) by groundwater extraction during the 19th and 20th centuries has resulted in

underdrained conditions in the low permeability London Clay Formation and Lambeth Group,

creating a characteristic under-drained pore water profile. Since the mid-1960’s the rate of

abstraction has declined with the result that groundwater levels in the confined lower aquifer



began to rise. Beginning in 1999, new public water supply abstractions were implemented in

selected locations as a result of the GARDIT initiative to control the rise, and groundwater levels

are now broadly stable in the London Basin.

Groundwater pore water pressure profiles in central London are critically influenced by the lower

aquifer water levels. Typically, the existing pore water pressure profiles in the London Clay and

Lambeth Group are sub-hydrostatic as a consequence of under-drainage from aquifer pumping.

Further complexity is added by the presence of the Harwich Formation (where present below

the London Clay Formation) and sandier layers within the low permeability clays of the Lambeth

Group. This leads to the presence of hydraulically isolated pockets of watercharged sands with

a significant reservoir capacity within predominantly clay layers.



3 Baseline Statements

Background information is given to set the context where relevant, this does not form part of the

Baseline Statements. The Baseline Statements are shown in bold italics.

Levels are given in metres above tunnel datum (mATD). The tunnel datum is 100m below

Ordnance Datum.

3.1 Man Made Features

3.1.1 Foundations

There are many structures throughout the site which have basements or foundations which

could potentially interface with the proposed works. According to the information available to

London Underground it is anticipated that the following structures include basements. Unless

indicated otherwise these structures should be assumed to be founded on shallow foundations.

In cases where information regarding foundations is not available at present any assumptions

regarding foundation type are stated below.

One Lothbury

This building has a lower ground floor and basement with a secant piled retaining wall.

6-8 Prince’s Street

This building has a sub-basement and basement, and is founded on piles with a toe level

understood to be approximately 80.1m ATD.

Grocers Hall

This building has a lower ground floor. It is assumed that the foundations comprise both strip

footings and piles.

5 Prince’s Street, 27-35 Poultry

This building has a three level basement. Mass concrete shallow foundations are assumed.

Potential redevelopment of this structure is understood to include construction of piles.

1 Prince’s Street

This building has a three level basement assumed to be founded on a raft slab, however, there

are indications that caissons were sunk during construction.

Mansion House

This building has a cellar/vault and is supported on timber piles (reinforced with concrete). The

building has been subject to a number of phases of underpinning work.

1-6 Lombard Street

This building has a single basement level.

8-10 Mansion House Place

This building has a lower ground floor and basement, and is founded on piles with a toe level

understood to be approximately 71.3m ATD. Some piles supporting an earlier structure on the

site were re-used, however, their toe level is unknown.

1-10 St Swithin’s Lane

This building has a lower ground floor and basement, and is founded on piles with a toe level

understood to be approximately 70m ATD. Archive drawings indicate that an earlier building on

the site was founded on piles. The north-east part of the new building was constructed over an



existing basement and no further piling was carried out. It is not known if these piles were re-

used.

20 St Swithin’s Lane comprising Sandeman House and Don Restaurant, 19 St Swithin’s Lane, 21-23 St Swithin’s Lane

Nos.20 and 21-23 have two levels of vaulted cellars assumed to be supported on strip footings.

No.19 is assumed to be founded on piles.

1 King William Street

This building has a lower ground level, sub-basement and basement.


This building has a two level basement.

15 Abchurch Lane

This building has a two level basement. It is assumed to be founded either on pad foundations

or a raft.

St Mary Abchurch

This church lies above a 14th century crypt.

Sherbourne House: 119 Cannon Street; 14 Sherbourne Lane

This building has a two level basement.

121 Cannon Street

It is not yet known whether this building has a basement. The building is assumed to be

founded on strip footings.

123-127 Cannon Street, 5 Abchurch Yard, St Mary Abchurch House



129 Cannon Street, 1 Abchurch Yard



131-133 Cannon Street




This building has a lower ground floor and basement with a strongroom supported by piles

20 Abchurch Lane

This building has a lower ground floor and basement.


This building has a lower ground floor and basement with a bored piled retaining wall.

12 Nicholas Lane

This building has a single basement.

14 Nicholas Lane

This building has a single basement.


This building has two basement levels. The building is assumed to be founded on piles.




This building has a lower ground floor and basement with a bored piled retaining wall. The

building is assumed to be founded on piles.

Guild Church of St Mary Woolnoth

This original church crypt has been redeveloped to form part of the booking hall of Bank Station.

Shafts for the Station’s Lombard Street lifts were sunk from within the church.


This building was constructed to form an entrance and ticket office to Bank Station below. It is

assumed to be founded on strip footings.

85 King William Street, 10-16 Lombard Street, Post Office Court

The nature of the basement of this building is currently unknown, but it is assumed to contain at

least one basement level. It is understood that the perimeter foundation of a previous building

on the site has been re-used, with underpinning undertaken to a level of 88.3m ATD along the

Abchurch Lane elevation.


This building has a lower ground floor and basement.



founded on piles.

110 Cannon Street

This building has a lower ground level, sub-basement and basement. The building is assumed

to be founded on piles.



29 Martin Lane

This building has a single basement level. The building is assumed to be founded on strip

footings.

27 Martin Lane, 28 Martin Lane

This building has a single basement level. The building is assumed to be founded on strip

footings.

24 Martin Lane

This building is assumed to have a single basement level and be founded on piles.

24-28 King William Street



This building is assumed to have a single basement level. It is supported on piles. Potential

redevelopment of this structure is understood to include construction of additional piles.

Adelaide House

The nature of the basement is uncertain, however, the building is supported on timber piles.

Bank Of England

This building is understood to have three basement levels, with reconstruction in the 1930s

involving extensive underpinning. It is assumed to be founded on shallow foundations.



King William Street Bridge

This structure is generally founded on 610mm diameter piles with toe levels 15.25m below the

surface of the London Clay. The exception is the east end of the south abutment which is

founded on a single 2.5m diameter pile taken 18.3m into the London Clay with an under-reamed

bell of 7m diameter.

King William Street Vaults

These vaults are assumed to be founded on shallow foundations.

London Bridge

The north abutment of this structure is founded on two caisson piles with a toe level of

approximately 73m ATD.

Bank Station

Numerous existing London Underground Limited and Docklands Light Railway assets are

present below ground level. It is possible that temporary works, e.g. timbering may be found

behind permanent structures.

For the purpose described in the Introduction to this GBR the Baseline Statement relating to

possible foundations is:

• There is a high risk of encountering basement slabs during works at the 10KWS site.

For the purpose described in the Introduction to this GBR, for construction of the new Northern

Line southbound running tunnel, the Baseline Statements relating to possible foundations are:

• There is a high risk of encountering piles beneath 6-8 Prince’s Street, 8-10 Mansion

House Place, 1-10 St Swithin’s Lane and 33 King William Street.

• There is some risk of encountering piles or other deep foundations beneath 1

Lothbury, 1 Prince’s Street, 143-149 Cannon Street, 110 Cannon Street, 24 Martin

Lane, King William Street Bridge and London Bridge.

• There is a risk that potential redevelopment of structures may result in some risk of

encountering piles beneath 27-35 Poultry and 33 King William Street.

• There is a high risk of encountering previous temporary works behind permanent

London Underground and Docklands Light Railway structures underground within

the whole works area.

3.1.2 Archaeology

The archaeology of the site is discussed in the Baseline Report - Archaeology (ref. 2). For the

purpose described in the Introduction to this GBR the Baseline Statement relating to

archaeological remains is:

• There is potential that buried archaeological remains will be encountered during

works around the southern, northern and western edges at the 10KWS site in areas

not affected by the lower basement.

3.1.3 Excavations/Infilled Ground

Made Ground extending up to a depth of 14.3m was found during the site investigations within

the site area. At 10 King William Street in particular up to 6.5m of Made Ground was proven in

boreholes sunk in the basement prior to construction of the current building. As part of the



redevelopment of this building, a new basement was constructed with a sub-basement slab

soffit level of approximately 106m ATD. This is likely to have resulted in the removal of most, if

not all of the Made Ground beneath the footprint of 10 King William Street.


infilled ground is:

• There is a very low risk that in-filled ground will be encountered during works at the

10KWS site.

3.1.4 Groundwater monitoring Installations and Wells

Historic water well positions are indicated on drawing No. LUSTN-0008798-DWG-004281. Three wells are indicated on the site on 10 King William Street, however, there is a possibility that one of these is a duplicate.

For the purpose described in the Introduction to this GBR the Baseline Statement relating to existing boreholes and wells is:

• The boreholes, wells and installations indicated in Table 3.1 exist within 50m of the

works.

Well Number Location Easting, Northing

TQ38/352A-E 41 Lothbury 83039, 35893

TQ38/353A-D 27-32 Poultry 82948, 35855

TQ38/354A-C Prince’s Street 83017, 35834

TQ38/391 St Mary Woonoth, Lombard Street 83076, 35782

TQ38/393A&B 5-6 Lombard Street 83045, 35763

TQ38/392 1-2 King William Street 83034, 35693

TQ38/395 Salters Hall, St Swithin’s Lane 83033, 35693

TQ38/396A&B King William Street 83073, 35652

TQ38/396C King William Street 83033, 35693

TQ38/424 81 King William Street 83143, 35660

TQ38/425A&B 10 King William Street 83122, 35621

TQ38/426 10 King William Street 83122, 35621

TQ38/397A&B 77 King William Street 83172, 35630

TQ38/403 Stafford House, King William Street 83130, 35560

TQ38/405 110 Cannon Street 83110, 35541

TW38SW/427 Arthur Street West, King William Street 83167, 35450

TQ38/409A&B King William Street House 83117, 35441

TQ38/426 King William Street 83122, 35621

TQ38/411A Regis House, King William Street 83186, 35409

TQ38/411B Regis House, King William Street 83206, 35399

Table 3.1 Wells within 50m of the Proposed Works



3.1.5 Unexploded Ordnance

The City of London was heavily bombed during the Second World War. An unexploded

ordnance desk study and detailed risk assessment was carried out as part of the Geotechnical

Desk Study (ref 1). The results of this study are included in the PCIP and within the site bomb

strikes were recorded at the following locations:

• The south-west corner of the Bank of England

• The northern corner of No. 5 King William Street

• King William Street next to the north-east corner of Adelaide House

• Around St Mary Abchurch

• Bank Underground Station

A ‘Medium to High’ UXO risk level, as defined in the MACC UXO Threat Assessment, was

assigned to proposed ground investigations with a recommendation to implement a robust UXO

mitigation strategy for borings up to a depth of 8m below ground level.

There is no evidence of bombs falling on the 10 King William Street plot.

For the purpose described in the Introduction to this GBR the Baseline Statements relating to

unexploded ordnance are:

• There is a medium to high risk, as defined in the MACC UXO Threat Assessment, that

UXO will be encountered during ground investigations within the whole works area.

• There is a very low risk that UXO will be encountered during construction within the

whole works area.

3.1.6 Contamination and Waste

No soil or groundwater chemical test results or waste classification test results are currently

available for the site area. It is recommended that such testing is carried out as part of any

ground investigation at the site.

The Geotechnical Desk Study contains extracts of historic Ordnance Survey mapping of the

site. It also describes local land use generally from Roman times and development in the 10

King William Street area from late Tudor times onwards. No evidence of potentially

contaminative historic site uses at or immediately around 10 King William Street are noted,

however, there is reference to commercial properties being present although their uses are

either unknown or not stated.

It is noted, however, that basement construction is likely to have removed much of any historic

contamination. However, the possibility of more recent spillages or leaks of contaminants within

the basement, or the migration of liquid contamination through the surrounding soils cannot be

discounted.


contamination and waste is:

• There is a very low risk that significant contamination will be encountered during

works at the 10KWS site.



3.2 Geology

3.2.1 Elevation or Position of Strata Boundaries

The elevations of the stratigraphic boundaries relevant to the Bank Station Capacity Upgrade

can be found on the geological section along the running tunnel alignment – north to south,

Figure No. 6 within the Geotechnical Desk Study.

The geological profile likely to be encountered within the limits of the station area has been

interpreted from the borehole records in Appendix 1 and is summarised below. Descriptions of

each stratum are given in Section 2.


strata boundary positions is:

• The elevations of the strata boundaries relevant to the whole works are shown in

Table 3.2.

Structure Elevation of Bottom of Made Ground (m ATD)

Elevation of Bottom of

Alluvium (m ATD)

Elevation of Bottom of River

Terrace Deposits (m ATD)

Elevation of Bottom of

London Clay Formation (m

ATD)

Max 111 105 106 62

Min 100 99 97

Notes Not present throughout the whole area

Proven in one borehole

Table 3.2 Baseline Stratigraphy at the Site

3.2.2 Length or Area of Occurrence


strata occurrence is:

• The stratigraphy shown in Table 3.2, above, should be assumed to be specific for the

whole works.

3.3 Strata Description

3.3.1 Made Ground

Made Ground will be encountered across the site as extremely variable material including

demolition rubble and re-worked natural deposits such as Alluvium, River Terrace Deposits and

London Clay.


Made Ground are:



• The presence of Made Ground is not anticipated beneath the existing basement in

the works at the 10KWS site.

• The thickness of the Made Ground will vary between 0.0m and 14m, across the whole

of the works area.

• Made Ground will be variable with both fine-grained and coarse-grained elements

across the whole of the works area.

• Standard penetration testing in the Made Ground gave ‘N’ values from 0 to 84 across

the whole of the works area.

3.3.2 Alluvium

Alluvium will be encountered across the north-western and southern parts of the whole works

area. It will comprise cohesive soils.


Alluvium is:

• Alluvium will not be present in works at the 10KWS site.

3.3.3 River Terrace Deposits

River Terrace Deposits (RTD) will be encountered across the site. It will mainly be made up of

sandy sub-angular and rounded flint gravel. It will also contain fine to coarse sand layers with

occasional beds of clay and silt.


River Terrace Deposits are:

• The thickness of the RTD will range between 0.5m and 2.0m in the works at the

10KWS site.

• Gravel content will be sub-angular to rounded in the works at the 10KWS site.

• Standard penetration tests carried out in the RTD encountered in the boreholes

located near to the works at the 10KWS site gave ‘N’ values between 4 and 114 in the


3.3.4 London Clay Formation

The London Clay Formation that will be encountered is described as firm to very stiff and brown

in colour becoming grey with increasing depth. The intensity of fissuring declines at depth, and

the orientation varies from near horizontal to near vertical, often with more than one orientation

represented at a given level. Very closely spaced partings of silty sand are present in places,

and occasional claystones were encountered in previous ground investigations. The upper parts

of the Formation show evidence of remoulding with black or iron stained fissures infilled with

soft clay.


the London Clay are:

• Standard Penetration Testing within the London Clay in the area of the whole works

yielded minimum and maximum ‘N’ Values of 21 and 75 respectively



• The London Clay Formation encountered in the area of the whole works will have a

maximum plasticity index of 60%

• The minimum and maximum London Clay Formation undrained shear strengths

encountered in the works at the 10KWS site will be 40kPa and 150kPa respectively

with the exception of claystones

• The minimum and maximum London Clay Formation undrained shear strengths

encountered in the remainder of the works will be 40kPa and 330kPa respectively

with the exception of claystones

• In the London Clay Formation in the area of the whole works, local water seepage will

occur from fissures and in the vicinity of claystone layers.

3.3.5 Lambeth Group

The Lambeth Group lies below the level of the whole of the works. A maximum thickness of

1.5m was proven in a borehole at 10 King William Street. The material was described as a

matrix of hard friable mottled grey-green brown silty CLAY with up to cobble-size intact

fragments of grey-green-brown silty CLAY with frequent polished and striated surfaces, With

depth it became stiff to hard mottled brown-blue silty CLAY with a pronounced framework of

discontinuities at 45o to the horizontal, the surfaces of which were polished and striated.

For the purpose described in the Introduction to this GBR the Baseline Statement relating to the

Lambeth Group is:

• The Lambeth Group will not be present in the whole of the works.

3.4 Geological Features

3.4.1 Faults

No faults or series of faults are noted near to the construction area for the Bank Station

Capacity Upgrade on the local 1:50,000 British Geological Survey map. For the purpose

described in the Introduction to this GBR the Baseline Statement relating to faults is:

• Fault zones will not be encountered in the area of the whole works.

3.4.2 Hard Strata

Claystones are known to occur within the London Clay Formation and will extend horizontally

beyond the zone of influence of the Works.


hard strata are:

• Claystone beds will be encountered in the area of the whole works and will extend

horizontally

• Individual claystones in the area of the whole works will have a maximum dimension

of 600mm



3.4.3 Deep drift infilled hollows in the London Clay

Figure 7 in the Geotechnical Desk Study shows contours of the surface of the London Clay

Formation beneath the site. In the vicinity of the Lombard Street/King William Street junction

there is a depression, or possible scour hollow, approximately 8m deep in the surface of the

London Clay possible resulting from fluvial or periglacial processes. The more general fall in

level of the surface of the London Clay to the south and south-west may be attributed to down-

cutting by the Rivers Thames and Wallbrook.


deep drift infilled hollows in the London Clay Formation is:

• There is a low risk of encountering in-filled hollows in the surface of the London Clay

Formation in the area of the whole works.

3.4.4 Ground Gas

No observations of ground gas were noted on the borehole logs reviewed during preparation of

this report.


ground gas are:

• Ground gas presents a low risk to construction workers operating in open excavation


• Ground gas presents a low risk to construction workers operating in confined spaces

in the remainder of the works.

3.5 Groundwater

3.5.1 Piezometric levels

An upper and a lower aquifer exist at the site, these are separated by the London Clay

Formation and the clay and silt units of the Lambeth Group.


piezometric levels are:

• The works at the 10KWS site will not encounter either the Upper Aquifer or the Lower

Aquifer

• The piezometric level in the lower aquifer in the area of the whole works will have a

piezometric level of +76+/-5m ATD during construction.

3.5.2 Pore Water Pressure

Within the River Terrace Deposits and London Clay Formation there will be a hydrostatic

increase in piezometric pressure for an equivalent groundwater level of 107+/-1.5m ATD.


piezometric levels are:



• The maximum piezometric pressure encountered within the excavation limits of the

whole works will be 250kPa.

3.5.3 Groundwater inflows

Groundwater control will be partly achieved by constructing shafts from within the existing

basement of 10 King William Street. Groundwater levels in the Upper Aquifer lie close to the

boundary between the River Terrace Deposits and the London Clay, however, it is anticipated

that little or none of the former remains in-situ beneath 10 King William Street. The sprayed

concrete and permanent concrete linings of the shaft will form the principal groundwater control

measure for the post construction long term condition.

The contractor shall devise his own measures for temporary control of ground water during

construction which shall avoid a reduction in ground water level outside the proposed works.


groundwater inflow is:

• Groundwater is present within the Made Ground and River Terrace Deposits at the

10KWS site.

3.5.4 Water bearing strata or similar phenomena


water bearing strata is:

• The London Clay in the area of the whole works will not be water bearing, with the

exception of claystones and silty layers where seepage will be present.

3.5.5 Strata Permeability

A range of permeabilities for each stratum are anticipated.


permeability is:



• The range of permeability for the ground conditions encountered by the works is

provided in Table 3.3

Strata Minimum Permeability

(m/s)

Maximum Permeability

(m/s)

Made Ground 1x10-8

1x10-4

Alluvium 1x10-11

1x10-10

River Terrace Deposits 1x10-8

1x10-3

London Clay 1x10-11

1x10-8

London Clay – claystone

beds

1x10-11

1x10-6

Sand lenses in Lambeth

Group

1x10-7

1x10-5

Lambeth Group 1x10-13

1x10-5

Table 3.3 Baseline Permeability



References 1. Mott MacDonald Ltd, November 2011 MACC UXO Threat Assessment, ref. N133-BCR-MMD-00-2-

DC-X-0001-S2-1.0; LUSTN-0008798-DOC-001220 v1.0

2. Mott MacDonald Ltd, August 2011 Baseline Report - Archaeology, ref. N133-BCR-MMD-00-Z-DC-N-

0013-S2-0.1; LUSTN-0008798-DOC-001181 v0.1



Appendix 1 – Included Borehole Information

Page 1 I Borehole TQ38SW1945 I Borehole Logs Page 2 of 2

:,T:) �

:.. �?

/ 2. OBING AND GROUND CONDITIONS

/ ...2.].. Location of Site. ... ,,....

The site is located at Grocers’ Hall Court, Princes Strect,

London, 0 2 c

2 2 Location of-Borehole.,

k C

The boreho1e was drilled on the grass verge in the ’ourt yard of Grocers’gall Court, 1>rinces Street, tondon, E’.0. 2 ,

Dates

The borehole was drille4 between the 27th and 29n 1ebiuo j, 1968. I

22. B6rine. -

The borehole was drilled with shell and auger type drilling

equipment and was 6 inches in diameter e .

2 i. Semmlinp ad Site Tests

Representative samples of the different strata were taken

from the boring.,toolo and placed in jars with tight-fitting lids for

detaid examination, These samp1s are taken in duplicate. AC tor

i. examization, one set of samples is sent to the client for correlation $ with the descriptions given on the Borehole Section Sheets: the

du pijicate set is retained in the lab*ratory.

Undisturbed core samples bC cohesive soils were taken in-

the standard 4 inch diameter amp )Xg tube This consists of a thin-. walled steel tube about 18 ins long fitted with a cutting ahoeof

slightly smaller, internal diameter (area ratio about 22%) The

samples are thus obtained in as undisturbed condition as pea ibl

After being taken, the en-1e of ti’s samples are packed to prev’nt

damage in transit to the laboratory and the tubes coaled to make th ii

airtight.. The samples arriving at the laboratory are tr4us as

representative as possible of the soil as it. eii.sts,oritho.sit.’

Bulk samples, about 15-20 1b3 in weight of granular oil

were taken These samples..are transported in metal containers to

avoid lose .of the Line fraction.

, ..

04- I

I ...... ... ..

I I

........ �. ...

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Page 21 Borehole TQ38SW1 945 I Borehole Logs Page 2 of 2

� S - i - - . - ....

/ TQa./iq

/ GROUND E)(PLOA1OS - - I

/ BOREHOLE:N

iontroct Name GROCERS’ HALL , Report No 420

/ ClIent MSIB? H.t1 P.?C and 4.].colxit, Site Address

Address ?4rYc Hoea . I .._. Pincs Strot,

- - - London E C2

Standing Wqter Level - -- Method of Bor eli uger Al

Water Strugc . ’Diametdi’ 6 inches

Ground Level 0.D,, ’ Start - 7sqG8 hflk 29.2:68

Remarks I

I,

JARS �CORES

F

IA1�

L

2769 2I0IE: 2791 60I0 1I:..... 2770 7 1 0’ 2793 65 1 0 11 :

2771 12 1 0 11 .2795.701011 1.

2772 17 1 6" 3801 75101;H 2774 23 0 1 . 3803 801011. ’.. ,.

2776 28’0" �.

2779 30’O" 2781 36 1 6U’ 2783 40’0’ -.. ,., 2785 451011 2787 50101 " 2789 551011

: ..� ’.’’ .’

2778 29101,1;... . 2780 351011 1

2782 2784 /3’6" 2786 /8’6"L 2788 531611: 2790 58 1 6Ji 2792 63’6" 2794 6 1 6 1 - 1 2796 73;611.-38p2. 78 1 6 11 l �.�� . ’

2773 18 1 0 11 2775 .2310w .,

Description .. . IThickness Dpt

Made gvouid (brown clay with stones and pieces of brick) 17l0 17’0 ... I Gravel and sand .. .� 6’o"

Sand and grave]. : . . .. 6’ C!l . l ( Stiff brown £issixrod clay witheandy patches s. . 1’O"

Stiff blu4 fissured clay-,, 2 5 tOlt 5I �’��. Very stiff blue fissured clay . ..:. 22’ 0" . 77 IOU. � .

Very atiff blue fissured clay with sathipa;cies 3’O" 80 1 0"

� I

� .., ................... .. . . . In

I p - ..

ii

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Page 3 I Borehole TQ38SW1945 I Borehole Logs

Page 2 of 2

(..

u,1 : : :’ i:: �. : � � . . , :

uJ ifJT11 a

I U L-

t2&Jv

4.tjf. :fi I H I t! ’1:1 1 1 �ji LHifI H ’

I

. \ . �4o. _ Moa. -ovnd �’� )i .d jLLLL . .. .

II ’

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IUtLL: otç:iJftJ jL i d ’, 1 1 I _1 I l -�-j: I 4i[ i .

LMi

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WJ7 AUSS L. i:I.._1__i. –Ei " H 1I I :.:.ri4i. ffiHiUi TLId– +J+ + j– jft �JLL j :IL.i... .

I fl j 1 rl I 4- � -’i+j IiI Lf ft rJj 1 I

hi+ 4F -U l I � iH–Fd+i I 4-

fWt1J LLit’

:j.IJ. :itiLtlAr.t.’i/J ILiTLf L:t: :h1:L:t:H i -:

TEET 1E–:EE3t 1f: 1– t’i::1tf4 f – LIH: :114:1 d Ldt.

s/,If L/,. ISJIIf4’I I t /:. � .L ...

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:: 1 ��

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I1t1H11 I 1:Lkt1 1

1� Rflz a ?Q/ i� /OO1

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Page 5 I Borehole TQ38SW1941/B I Borehole Logs Page 1 of 1

British (0! Geological Survey

HftTJRP4 ENVIRONMENT RFsFe- COUNCIL Report an issue with this borehole

� << � <Prey � IPage 5of5j

� Next> � >>

ya changc

� IS 2m

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4 ’ J.

Page 3 I Borehole TQ38SW1 941/B I Borehole Logs

Page 2 of 2

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c � ;i ;j

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wa

Alp

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1

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I F

-. , - - - - F �

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d

t 1:

Om

T ;V j j f

1 --St

- tk-- �� _ L � -

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.

.

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- r V

,. : � VVV � �.t. /:. V .

.

ILI

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V

’ : ,. :

, VVV

. V �� V’ V , V �

’V� � V

V 1- VV4

V VVV ¶

V i ükA ’ V: d4r

- �V__1_ [ ItI J I\

?

Prire I I Ti I

VVV

VV 3 V ç

V ,�

iF

SITE 1 ;Vc

’’n

- .

........................ : I .

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r - I

VIV 1 3 V I VVVII I I

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Page 11 Borehole TQ38SW1941/A I Borehole Logs Page 2 of 2

BORE1O11

NO ’ **’’ ;

Ground Level ..... .... ;� ....... . ..... � 11 ’A e ’ Wtr Etruck , r th

Standing Water pxe.vnt.ri 5ar 12 l7O Fnhh1 t O

1otg term obseritatiofl REMARKS Piezome ter ustai1edith cand1 a 35’O’

� *L b3crptkh of tca1 . Thickn pAPth Dhtutd ampI ç

- k

.... , ;.

. .,;. . 2’6" 36401

I I

( . 6 0.! ’V! U +

7’6 .36403

Fade ground (1ak soiL, 3oo U?4Q4 gravel, bricks peat, shells 2OO"

L I

and iood) I I 126 .3o40 I I I

Içj I

I I

I 1po

.j6407 I I

20’0 .245 1 I I I I J I i 2Q’O’ 6 1I08 20’0’’ -- ?4 25

Medium dense brown sand nd 216J6409 ravel with a little brłn 4 0 .

silty clay I ’ . 24 Of’

4 LJc410 -, Firm brown sandy clayey’ , silt I

with a little gravel in 30 I I 26 6 .io4fl places I 0’ r I I I

21 V 17 5 - 28O 4J3

29& .36416 Medium dense brownsand nd 60’ vavet

I , 3.3O" ii 5 �

lt 33t B’6415 Stit1 b6wn’ clay with c1ay- I I I I I

stete ’35 , T 35I6l

I 3) 0 LTC.JL7 1 1

I

Stiff grey silty e.ay with I 1

40 V..36418 1

1.aystone in p aessI 40" U6119

I

TOTALS Continued I 4

’ � z;r1,1tI*n$ .C.P.100I Of In acMrdancØ with �"Site nv ttgtionI 1. �II/;I . 1i: . :.. L

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Ground LveI

ang Water Le

PEt4MKS

Page 2 I Borehole TQ38SW1941/A I Borehole Logs Page 2 of 2

onrd .5 4.

r ot orlæ 8

’.5

54 1

4. 1. .4.i4..f,.,’. . ,� . .. .�,,�,

x irbnf 1 S4nlpt

ttirb’c aInpie bf intI;s.5 Tmt c. un I t

Deii-IptJon of stJ:aD Thckci Deph _

stifgrei silty iay th c1aysto1e 1 p1es ts- 46 1 0’

-, -15 ; �

47 V6421 I 1b �I r

44

;’ t f :

’ �

: y4

. . :. � UG43

c L L 6lI

ç Stiffgre Y silty ciay. 9’O

6OIl Ji’C 6 L -�’�� ’ ...... ... ..

t , .. .J4;: ;..,y � ......... . 2 Of 47 I

’2O 5 1 6 628

-

c , "67 O 16 2 ’ )

,,.. .- . . - . ,,. ,. �. : . . .., �-.; . . . . ,. .; L II . . . . . . - ry. SS44 .

54 70.’6:

1 14. 7, V IJ63L 4.

I 756" .Th43Z

Vy’ stifr grey silty clay 44 7,7 Q IT 1

W1. traces of grey gilt 25 0 sad fiurd in placts

b’ J644

V643

4. r .8 6’ I �.1

r I

I 88’ " t4’7

00t 45 5

’Botom of Borehol T.

4. 4. 1

I TOTALS O0 9O’O -

NOTE bm.triptions In accord with C P.01 Site lr" ortn Its . ... :

� Jir Sample B Built $*nipI W Wnte Sample . .5. U - Undiwrbed Core ipe$ 414 s3i x in longDepth ahQw4 to top of ssn ’. 54.tSt t.s

Number of bl0w per ft per1etralon in Sundr. ,tsn Tett. c a .

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Page 1 I Borehole TQ38SW1941/B I Borehole Logs Page 2 of 2

- Tpndti 1. Sh

-

I BOREHOLE, 2 A

Ground Level 144 7 O Diameer o

Water Suek l. ? 00 - tlethpd .. shell qand Auger :

ti 1 1

5tandIn Wr Level j4’-7 j9j170 ) Stt iX - ’ Finlib )9 ZD

MAkS

DeCtipUGJ łf t*- t* 4 Th1ekrces I Dpth LlL D ttibtd .Spt hd rn t . t I Reduced- fl.t1ri ,’ipl

.. ..,...___ .. ’.. ..,., ....... 41-1 V

..

I

I

l Lt r 364

’ ...................._..:: .... ! :�

��_

�’h’ - r

,.I I I. ........ .. . ...,, .. .. ,. -. .

I I . II III

Made gound ’(Brick . :. . . ,’ 11 L

soil, ncrete ashes, oôd 15 0 r

JÔ co 4

,

peat, rown C. ay r r

,K J1144

I -

6’.-,1 J6442

1

297 r10fT g443 16,’ 0 . .. . .......... .... 1 ... . ... ’ :;

J64

liedluin deise gravel and brow g 21O" Et.4i i’O’ N=24

and wh traces o_.b,rown 133 Ø 22" J644

rd 1 get c.ay I � I’ 23i0’ 447 I

..,. I . .. .. ;B68 26 * 0. ;9

$e11 2 ’ 6" 141 ,

2 l 3 II . ......... I ... . :., 24 36450 2&3 ,1J645i. Stiff dark brou silt lay 1 0

l 4 O0 U&45 I IL , II

rr I J643

_ I

I 1 Lr I

Stift grey llty day with 376lJ645jI I 1

clastori Lfl places and I

occasional fisurs .1 led

with sill.

I I 4216tt J47

1 F 1 L I I I I r 451 UCI5I

I II I I. LII

I QOnLnUd

11

y �i:fl1.

I,

:1

N0TESI bcrlpt.lons In iccordanc wlth C PQOI $Itł Ine igaclbn .i 1 1 1

1 � fr 5mpIe j B.= Buflv rIk W - mptt r t

II ’I it,rbd CQrC SimpII, 4 In dii 18 In D pi totQp Of’5pl4 U Sh1p1e tloL 4

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Page 2 I Borehole TQ38SW1941/B I Borehole Logs

Page 2 of 2

I

� �

Me. t, -:e /

SO EHOL J c44i , H

H

Ground Le’eI Ofamewr oC Boring

Water Struck. I

Standing War Levet H

� (’\�-.�.. ,H H

HH

� ��

� � H7 H I H

NOTES DecnpIons rn accordunee wIl1 C PiOQI isIt lnvut t1DiH H i Simple 5Bulk Simple! W Wte Simpl.e

Uoil dsturbed 6 6 t Stnple 4 In dI ’jj in toA Depth ihW to lop of tzmple U io H � tnj.t p.A Tea. �� : H � I

REMARKS: ,

!

� ",;, .- �p’z / �- .� �� H ; � ’I � �

H H1 . I � I J: - � � � � � �� 1

Iecptlan or Thkkn

�

PP Pdud � � �’ � � : �

tI&ttitl Smpk frrw .� ,�.-� .

��;�� -� ’ ��I� � -�. �� ’�HH

H H 7I5 I j59 (44

- H 1 L ? ’ H 5OOJ4u

l 4i i I r r �H;1* ltHF 4� H, HF I H t1;� IHiI’ tj Y-? � ? 4 ’

_ 52l,61 J661 � I . -- �� .� -

�t;�� :�� } �LH -� . - � � - _ t _�,

�� I L

I

� ;

[ - i646i Stiffgrey silty clap with

d d � c1ystoie i laces n � � H � occs{ov& fsuuie thfilled 40’9" I H With H

J645

H I - H

LIZ H

A 6’ J6467 IN

H I IH

H if W6469

� t5

ottom&fBohoLe H

� � H -:’

H

/ � ��

H

H H

I H TOTALS vl o’ o r

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Page 1 I Borehole TQ38SW1941/C I Borehole Logs Page 2 of 2

I ib r 1 ii t ft Appendix 1 Sbee 5 ,.

I REHOU r

Grond Level OD 1 q BoIng

War Strut . . .........

S tranding Wr L.a14 1 5tr I in

REMARKS.25 o water observation t ub insta11d

ottm 1O f boieh1&backflu1ed wih çonctate -r

I cdtZctd . Utitvr i ’ of Pc$crIpton Str Thcne Dcpth S- p blturbd

IL,

, . . :y�: ;: : I ¶ � � ’. .

I I-

I I ]

- Ce1ar’ 109 1 1

1() 9!,

fl 3

Pit c 43II

I 7 1’ off.

I

I ji

� 1 6 61r’

Made ground (Baek soil, 6’O’

I I

18 0 U&02 bricks gravel and brown

I

23 1 i . j 21 . 0 1JG503

Stiff bla ’ck s1jht1y łrgaruc I I I I I I I

s i lty clay wit1 pebbles in 23 6504 places V.,. �’.;1 191 WA

Firm brown sandy clayey sLit . with a trace of gravel 1 3 0 I 1

28 1,01 1 16 1 27 6’t J6506

8’0" B6507 2 I 29’O"

odium dense brgwr sand I ’I I

306" J6509 and gravel V 2

4 3209 6510 32b0

I 1 3364651I 3412! 9

I

- I

Eli in b)w sit clay Jith I I I 3’2J6512 occasionsi. f13.nte LJC

1-9 I -

-

3( 0" U65i4 -1 I 37, 6" JG515

Firm dark ailty c1ny grey 9’l1

I 11

11

I i13V& 41’O ’ IJ16

I I I

ConLinued

t~PTES. DetrupoM ii litcorAinee"with C P 1001!!Si te 1n-nt1gationu I 1

Jar Sz.mpli B na Bulk $.n,pt W WIc ni1p1e Qk U dd Care S amples , 4 In d 18 in kr c.e.Lh t.wn to o numple

1R:

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4

1

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’r’�1 ?- * .

1 .

I I

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- I.- -V I . : , , ;, , ,, -,

V.

1.

V � V_ � V -

1

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Page 2 I Borehole TQ38SW1941/C I Borehole Logs Page 2 of

I

OREHLE NO I 1 I I {

Grouncj Level DIanttFr , of

Water Struck

$aaitng Water L.v.t tar/1 , I

REMARKS

11

I L s,ij

t

- - -, - - -

e Str* IL -

jJVJI VIV

Thlkne I ept je

I. I

Udic1td

PUVm dark grey s5.ty 1ay "4

1 - - -

VV

-

1/ -o 1

5’6" 65I7 � V 5 V-VVV V -

Vt

-

& 1

1 C - I 46!0 I

-

/ I II LI I I I- V -

- :V 1 I I I U

V -

I - --: co’ &’&i �.- -

Stiff grey 4y of t mottled brł at-a £t.

15t01, I s.&t

S 5" 1i6520

1 V I

/ c I I

t 5’ 6u 652l V - - -

VVUV

I

I . 1 -:

I ’ - - U22--

V -- ’ .- JV V - - - VV

-

Vt

__

&O" --

-15. -: - ----

4

U1 - V

11 I &523 ’� j 1 I

Bottom of Boreho1 V

V V V V.V V U V VV V - V VVt

VtrVV 7. &V I. V --I

V V_ V; V V -

- - V - V V VVV - -

- .1 - VV V - I

- I - - :- -

L1 -

VV �V, V.V2V

V V V

-

V. V

41.V1 *V

� V I --------------- - r . 1 4 I

- I

I -.� -

I U

-.1

I

I

I I I

V V V I V

- VVV;VV:V V } V

V:IV.V .:_::

-- . I VVV

V. V

- l VV’tX

I I I I) 111

I

VVV I

1

li. 4L _ V

V 1 -V ’ , - . , ~ :_ V - VV,:

-

.1..

-- -V V

-V l

L - . .

U - - V V r -

- ~ ~ I ; I ? ,,, - ’1." ,-’,~ I I

tOTALS 6OO /

O’O I -1 V IL

�V -

.2 V V1 &VV . ,UV V :11

-V I

I ’

I

NOTES OecriUoi in ccordanc c p oo te IiYcgtions *11. (1-1

J Jar arnpIe B Bulk Sampif W Wte Samla -,it I; & I U tJdfrtu$arampics 4 ill x ia In Icti Depth so&i to óp of ainple I.)’ Sample IIVt ro-e .1 I

-%Inerrticji in Sondard PetltIra1A ’fa U 1

V ----------Vt: -.... V.. -.V- U.

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IF II

Fi -I.IIHF,

It

KING WILLIAM STREET

F F,

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Io Vit4 c(-tA’ Si

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Page 4 I Borehole TQ38SW1697 Borehole Logs Page 2 of 2

TCQ ?ti I 9iT9. f porin g Shell and Auger

H - Location TQ 328 809

Record of ~5 1

(shear 1 of 3 (mm) 290

QrIentaiTo 8asret Flo..,r Lel C.sli1q 200 to 8.66m 13.50 -

(MO D.)

10 - - Date

Samples and A situ tSE Coal ill

Depth (m)

Depth (m)

and Pt DESCRIPTION OF STRATA Uvel

vipi (GD) ,

� �_Q)j3 CONCRETE

20 .

FILL (brick and mortar rubble)

12.50

1 211 COhCREIE 12 . 30 .

1.60 go

ED 2. 00-2-45 C(3)1 - FILL (very soft damp dark brown soil

with brick flagments, mortar and pieces of shell)

2.76 80 2.75-3.20 C(3)6 275 3 . 00 _10150

FILL (very loose dark brown fine to coarse GhAVEI. With occasional up to

3.50 50 L.5.Q. brick fraan3nts _. eobl4e-size 10.00

_

ri, I H II 3,50- 191 C(2)l), 3.50

3.51

4.26 BO 22/10

4.25 - 4.70 0(01+ 4.25 4.40 0 5.00 50

FILL (very loose black-brown clayey 6.00.5.45 0(01+ 5 .00

silty SAND and GRAVEL becnirq dark brown silty clayey S210 and GP.AVEL

H with up to cobble-mite brick and chalk

�IH,.

5.7 BD fragments) HIH

5.75-6.20 0(3)1 5.75 8.00 0

6.50 50 6.50 0(24) 6.50 6,80 . - 7.00 0

FILL (medium dense fine to CO5t5Q 7.25 50 GRAVEL with pieces of brick and

7.25 pQtery(., 7.50’

Firm fissured brown silty CLAY with 7.85 U 7.85 discontinuties infilled with soft 5.50 remoulded CLAY with itonstelr.ing.

a 3 0 Width of discontinuities dcc ease / 850 5(29) 9.50 with deoth 8.50. 0

8.95 Firm fissured grey silty CLAY with

9.25 0 pronounced framework of

-

-, -

discontinuities at 45° to hotZOtit41 9.90 U 8.60 H

tn.nn _J3._ - N1L

REMARKS Borehole was advanced by Jackhammer and 11504 Excavation from baaeaent floor level to 1. 00m (71 Waist was added to facilitate boring from 3.00m to 7.65m.

I:I..I.�H H

For explanation of symbols and abbroviationt ,ee NotCh pages (i( andIll)

LAS Rat Na. - F(g.

sj 10872 KING WILLIAM STREET - LONDON E,C. ’4

WMP5Y LABORATORIES LIMITED

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Page 5 1 Borehole TQ38SW1697 I Borehole Logs

-

Page 2 of 2

...... .. .-..’..........td

fft!c r

Il-I

BOREHOLE 1 Record of Location

- faheat 2 3 1

Cnartation -

Srnl Floor Lava.).

Date commenced

A situ teats Pale IKl .: --

DESCRIPTION OF STRATA

Type (m) - - 5(28) 8.65 NIL 23/10

10.50 1)

El

11.00 ’ 0.65

- (1.60 0

8.6S 1150 5(35)

32.00 0

12.25 El

12.50 U 8.65

13.00 5(35) 0.65 13.Ii’ I:L

13.50 0

(3.75 0

14.00 U 8.65

14.50 S (42) Firm to stiff dark grey silty MAY

14.50 with pronounced framework of near vertical near horizontal, and at 450 - - - - to horizontal discontinuities becoeirx ieee well developed below 15, 50&. -- ’ I

- 15.25 0 occasional horizontal discontinuities 1.. .50 U 0 65 with pockets of fine grey SAtin, shell

fragments and pyrite nodules

16.00 5 (29) 8.65 L L 16.00 0

36.50 El

16.75. 0

17d0’ 6.65

17,50 0

17.50 5(45) 8.65

18.00 D .1622... NI!.

0 24/1

18.60 U 8.65

19,00 5(64) 11.65 El

19.75 1) . cisTatone at 19.50m

REMARKS

For explanation of tyinbOle and ebbrviatort see Notes, pages ) and )I)

LAB, R.1t4o, I F. ’Pt’ � T’PI P flPITtt1P I’ It

.3

t.

O6S629Iimages/ 1 2524849.html

21/08/2012

Page 61 Borehole TQ38SW1697 I Borehole Logs Page 2 of 2

rcs - q

Locton

of’ng Record of

] BOREHOLE

!3aseogt !loor Leval

....� ____________________________________ ______________ rm.00)

Det. OO1I1Cd

Casing Wae I I

.,...___---------.-’- Depth Depth DESCRIPTION OF STRATA Leval Depth ryp (m} (m) (mOD.)

� � 1 _

20.50 cr o (See 7heet 21

20.50 0

NIL - - -1_._5

END OF BOREHOLE - -

7.42 13.45 14/11 7.43 12.flO 21/11 7.43 t2,60 28/11 7.43 12.41 5/12

LI:I!:U

1111 -

REMARKS torel,ole wa I4c)flL1et with sand frovi 20.51Dm to 18,50ri. betonite to 17.50m, cement grout to 8.20. sand to 6.20o. r1attYel spoil to 1.00m and concreted cleF cock box to basement tieer level A piezorreter was installed at 19.50m below basement floor level. A stanlpfpe was inserted to 8.20m below basement floor level.

For explanation of ep,bole and .bbrevfatlons Se Notes. pages (I) led (II)

LAB Half. No. 1 S’ 10872 KING WILLIAM STREET L0ND0t E.C. I

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Page 41 Borehole TQ3�8SW1698 I Borehole Logs Page 2 of 2

5S::1 i ,10cc

Lotation

c3 tL4

TQ 328 809 BOREHOLE 2 (sheet I 0t6

Oneenslice mit Slur Level (’m0.D ________

Date 41074 commenced 4

Data Depih ’ DESCRIPTION ocSTRATA )0V4 I1I’I-

(m)

I I -

Shell and Auger

2 SO to 35.00sn ZOO to 52.30m ’er(n’m)

to 2..0m: 200 to 74..1m (r"p’)

eJPr5t Pilcon Wayfarer 20

and a IHH- Casing Water Casing

Depth Depth

HIL

0.66 0

0.80 BE)

2,10-2.56 S(4)t 2.10

2.10 1)

-CMQ= -----

FILL ibrL k5 and rubble)

mosgic floor --, _I 2 ..29_.

SILL (loose buck and gravelwith pieces of pottery) IF I

0-At A ’0

7/10

I H I

Very loose black fine to coarse 00

rounded GRAVEL with black fine to medium $5250 becoming very dense fine to coar.ee rounded Cubangular GRAVEL 4. with fine to coarse yellow SAND .

SuP I

- H

Nodules of very soft SILT down to 1.70m

Firm fLured brown-red silty CLAY j65 with occasional rounded gravel forming .45-1t’1 8/10 -- a nntrix of coepletely remoulded clay

With fine to coarse gravel-size fragments of tight grey cloy

Fire fissured grey silty CLAN with well developed framework of - -

vertical near ,,framework

discontinuities - some soft silty clay In discontinuities

2.85 c(3’Z) 2.85 L...00 .2.85 SD 1.20

3.60 D 3.60 0(114) 3.60 3.60 SD 4.00 0

4.35-4.73 0(70)1 4.35 4.35 80 4.70 0

5.10-5.48 C(70H 5.50

5.75 w 3D

5.85 C(54) 5.85

6.40 0 6.60 C(41) 6.0 6,60 SD

7.35 C 7.35 U 7.35 7.60 D 6.10 7.80 8(21) 7.35 5.75

8.85 U 8.00

9.30 D 9.30 5(25) 8.00

th00

REMARKS Borehole was advanced by 7ackhammer from basement floor level to 0.30m below basement floor

level (7h). Water was added to facilitate boring from 0.3Gm to 7.3Sm below basement floor lava)..

For penetion of symbols and abbreviations see Notes, pages () and (ii)

’10872 KING WILLIAM -STREET - LQDO E,C. =2N

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Page 5 J Borehole TQ38SW1698 I Borehole Logs Page 2 of 2

- BOREHOLE 2 2 of 6

Onemetion Basement Flwr Level mfl

- commenced

in situ tests Casing Well end -1 L

:I Depth Depth Dept D$cRIpTlON OF STRATA (A.

D411111

TYPV (M)

U 8.00

10.80 0 70.80 67407 8.00

11.50 0

11,85 U 8.00

12.33 D 11.30 S40) 8.00

13.00 0

13.35 U P.00 1.1

13.0 0 13.80 8(43) 8.00

ljre to stiff grey silty cL.Y with 14.50 D well developed framework of near

14 85 U 8.00 vertical near horizontal dizeontiruitieC. Surfaces occasionally polished and with black

1530 0 Mottling 75.30 S(48) 8.00

(6.00 D

16.35 U 8.00 / 16.80 0 76.80, s(43) 8.00

1:7.50 0

..

17.85 U 8.00

18.30 0 18,30 S(48) 8.00

HUi0 0 ILl - -.l .IL. lw.:. IH

18.35 U 6.00

10.80 0 19,60 S(56) 8.00 LN

REMARKS

Fmecplcnctlon of symbol and .bbevIe6ons see Notes, pages (i) and . . LAS Rot. N I 2 SI 1flp77 KING WILLIAK STREET LONDON E,C; I i(CONVU)

06563 0/images/i 2524852.html 21/08/2012

Page 6 I Borehole TQ38SW1698 I Borehole Logs Page 2 of

H.

-,

- Recoidi-b-j L7 7-1 77 ,

BOREHOLE 2 (sheet 3 01 6)

floring (mm)

Cowng Orientation aevtert Floor ..ev2. (m .0 . D.)

Boring - I Data equipme nt - I- commerited

samples and -

15 SitU 1 iSI HHL IVI çeing Depth

Watex Depth end

Date DESCRIPTION F STRATA LeI

Depth Type

(m) (m) (rnVOVQ.)

NIL 9/10

20.50 0 V

20.85 U 0.00 V

21.30 U HO . (60) 8,00

22.00 0

22.35 II a.00

22.80 0 22.80 8(51) 8.00 V

23.50 P

23.85 U 8.00 V

Stiff fissured grey silty CLAY with 24.30 0 very pronounced frapiowork cf near

430 S 56) 8,00 horizontal near vertical discontinuities, surfaces polished with cccasLoOCl black mottling and

25.08 D pockets of pyrites

U 0.00

25.80 0 25.80 5(64) 8.00 FrUent irregularly spaced partings

of fine grey silty SAND below 25.SOn. partings typically at 25-40ma contras

26,50 0

26.85 U 8100 V

27.30 I

27.30 8(66) 8.00

29.00 0

28.35 U 8.00 111k.. NIL 10/10

28.80 0 V

28.80 3(76) 0.00 V

29.50 0

29,85 u 0100 -V.-

REMARKS

For explanation of symbols and abbreviations see Notes, pages ) and (ii) V

No. . Fig. 2

s7J_ KING WILLIAM STREET - LONDON E. C. 4 (Co’)

http://scans.bgs.ac.uk/sobiscans/boreholes/1 065630/images/i 2524853 .html 21/08/2012

U,g I I I I HF Lotaton R.s,rtf o° I

method BOREHOLE 2 (sheel 4 of 6 j

Casing Onentetmon Saserent iloor Levi. ________________________________ - Date

COIl leflCd

SanmpIel and in situ teats Casing Water Dete O.D.

Depth Depth hH 1 FIJ DtCRIPTlQN OI STRATA 11

Typo

30.30 0

30.30 8165) 800 .

31.00 0

31.35 U 6.00

I) :I - t i;IIF II I

31.80 S(53) 8.00

32.00 0

32.50 0

32.85 U 8.00 -

33.30 0 33;3QI.FFI 5(43 0.00

34.00 0

34.35 Ii 8.00 Stiff to very stiff becoming herd fissured grey silty CLAY with frequent

34.e0 0 partings of grey silty sand below 34.80 S(57) 34.15 .ttW.._ 25,00m at 5-30mm centres and with 5Q

11/1C NIL framework of near horizontal and 450 to horizontal discontinuitieetFt 1

1550 a surfaces polished.

Lt..

3605 lJ 34.15

36.80 0 36.80 8(65) 34..5

37.50 0

38.35 Ii 34.15

36.80 0 38.50 S(71) 34.15

39,50 D

WTL

REMAI)XS

For explanation of symbols and ebbieviatimis see Note:, pages (I) and (ii

[AS Ref. No. fig. 2 5110372 KING 14ILLIAM STREET � LONDON E. C. 4 -- (Con-’n)

4- 1

I I

Page 7 I Borehole TQ38SW1698 I Borehole Logs Page 2of2 -

( 1. (Oct

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f( ( q’

I5I1’T LAU -JHAIUKUZb LIMIILLI -

sorig Location Recwd of ii I r

I 2 8oring diomtcr mnI) i of____. _ I

Orientf OII

(mm) -

Date gjIprnnT � � commenced

$amplel and I n situ 101s Casing

Depth Walei Depth

Oats anJ

Depth I I DECRfPTlON OF STRATA

0 D.

NIL 12/10 40.35 II 34.15 (Sec shot 41

40.90 0

413.80 8(50) 34.15

41.50 0

42.35 U 34.15

42.80 C(71) 34,15 42.80 D

43.50 0 HI-I

44.35 U 34.15 .Nk 4435 W tIara fissured grey silty

44

becoming vary silty below 44,35e. with

44.80 34.15 occasional partir.g o. grey LTiO sand. Framework of near vertical, near horizontal discontinuities in sample at 44.35m

13

LC.

46.35 17 34.15

46.90 4.80 ’ 51611 34,15

48.35 U 34.15 -

48.80 5(64) 34.15 - 48,80

1 NIL

REMARKS

HI I :- -H.I II-

For eap(anarion of symbols and abbreviations see Notes. pages (I) and (ii) -

LAD Ref. No - )g. si 10372 KING WILLIAM STREET LONDON EX, TCONVD) -

Page 8 I Borehole TQ38SW1698 I Borehole Logs Page 2of2

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1:1 21 1r, - l_ocation - BOREHOLE 2 _____________________________

_(sheet _6_of 6 j Qtirntrnion 5aseent Floor Level

st mm (nO.0.)

- Date

smpl5 and , iuss15 Casing Water Data

- 0.0 Depth

(m) Depth

(m) PIEZ. PIEZ. Depth biSCAlp1ON O STrATA

(m.0.P.; -

jj

Depth Type

Nit 15/10 59.3$ U - 34.15 LC.-

50.50 (Sce Cheat 5)

c0,00-51.30 1114)0 34.15 50.eQ .. Herd friable mottled grey-green-brown 1L’4

s11t CLAY as a matrix with up to cobble-size intact fragments of grey-

ii 34.15 1 - .. I green-brown silty CLAY with ftpquenti, polished and striated surfaces,

ShOw) be Coming stiff to hard mottled brown-

51,95-52.33 silty CLAY with pronounced

44 52 30 framework of discontinuities at 450 39 20 to horizontal. Surfaces polished and striat5d \,.) L

-11:1 OF BOREHOLE

22.37 34.90 7/11 - 26.75 34.72 14/11

27,00 34.72 21/11 27.00 34.75 25/11 -

26.97 34.79

-I

5/12

- ,-I[ -

REMARKS Ground-water observed after completion of sampling rosa to 44.50r in lb. Pierometors were installed at 50.35n and 34.70m below basement floor level.

Borehole was backfilled from 52,30m to 49.00si with sand, bentonite to 49.50m cement grout to 36,00m, bentonita to 35.510m, sand to 33.50m, bentonite to 33,00m, cement grout to 9.50m and concreted atop cock box to basement floor level.

-

For explanation of symbols and abbreviations sea Notes. pages (I). and (It)

LAD Ref. No. j9 2 S/10872 KING WILLIAM STREET - LONDON E.C. 4 (CONT’D)

C

Page 9 I Borehole TQ38SW1698 I Borehole Logs Page 2 of

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a

TC%3

21-~ .WcTL

Lotat’ Record 61: Scflng Shell and Auger rQ 328 809 BOREHOLE 3

(sheet I of 3 G0 to 11.75m

e-eler (mm)

210 Qpe-nos’ 8aeri,nt Floor Leval 13,51

Pllc Wayfar er Date 2 10 74 commenced

Samp les and ritu tesIf I:41 Casing

Depth Water Depth - lute

nd DESCRIPTION OF STRATA C.D. Level - -

Depth -

Type (m) (m)

127-1 1Y i

Q...52L (brick and concrete rubble) tilL... NIL 14/it

- 12.70

1,00 ED

1.50 U 1.506 I (soft brown CIA! with feeq U

.0 - 2.45 C6)l tzck, pottery, plster, sand and

2.10 El 2110 0(6) 2.10’ 2.00 UI

2.75 80 2.75 0(5) 275 3.00 C(50) 3.00’ ._00 -

7,50-3.80 0(84)1 3.50 - _ 3.60 7.00 16/10

4.25 ED 4.25-4.46 0(65): 4. 25

yrti. (loose becom ing very dense yellow seedy fine to coarse SAND and fine

5.00 ED to coarse GRAVEL with ccasional brick 5.00..5,23 0(67)) 5.00 fragments )

5.50 w

5.75-5.13 0(83)) 5.75 5.75 86

6.50 80 50 -. , 7.00 _

6.50 C(60) 0.50

7.20 Veey dense to medium dense brown 7.25 i -EDI.- GRAVEL 5,50 17/1C 7.25 0(31) 7.25

�0.

7.40 D Firm fissured brown silty sandy CLAY -. 8.00 U 8.00

Discontinuities thf tiled inith soft

B 60 eiiowted clay with iron staining- to ..s 6.50 D $,50 width of discotinoitiea decrease wt

0(32) 8.50 depth 8.65 BD

I S’J.rnI fissured grey s ilty CLAY with a

9,2 5 I HI I

-Jr amq work of near vertical neaf li - I - I--

horiaOfltal discontinuities 9,..0

10

(Raij 8.50 clzy$LQfle at 8.60 L

EMARIcS Eareholci was advanced by jackharncr And hard nucavetton Etos basement Etołr level to 1.00m (5’h). Coreh0lin abandoner) after encountering an obs truction at 3.00m. R ig sound 0.5Dm rd rebored.

Aatebale vc1 by bend excavttjorj a nd cheel11nq fries basement floor level to 1.00m (6h). - samples and tents carried out at crLlins& brat inn Of borehole.

’Water was added to fac ilitate boring from 2.35m to 7.305’. Ereho1 5 by chiselling from 3,60m to T IU-(lINbIituting thiogOli cleystone at 8.6Q

Of explanation of symbols and abbreviations see Notes, pages (1) and (ii)

- M 94 No, I 10872 1 KING WILLIAfl STREET - LONDON E.C. 4 -r 3

I

I

l:!IU

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Page 5 1 Borehole TQ38S Wi 699 I Borehole Logs Page 2 of 2

Location Record of -

BOREHOLE 3 heft 2 of

Wing rnm)

Qitentation 8asett21,r Floor Level

�’

Samples andl, 0515 I L I I

situ Ievs Casng Watot - Depth Depth

Depth DESCRIPTION OF STRATA t.i & Depth Type (m)

IO.50 0

10.71 11.00 It 8.50

11.50 0 � 11.50 5(301 8.50,

12.00 0

12.25 0

12.50 U 8.50

13.00 0 13.00 �S 9.50

13.50 -

0 First to stiff fissured grey silty CLAY

13. with framework of near vical near

14.00 u 8.50 NIL 14 horizontal and at 450 horizontal NIL 18/10 discontinuities. Some surfaces

polished and striated at 17.00m.

54.50 p occasional black mottling on

14.50 5(36) 8.50 discontinuities

15.00 1)

D

- LC- - :11-I I�r Ii-

15.50 U 6.50

..

(6.00 0

16.00 8(40) 8.10

16.50 - 0

16.15

17.00 I :-11 I’ - ;

17.50 0 17.50 s45) 8.10

10.00 0

18.25 D

19.10 0 8,50

19.00 8(51) 8.50 -

19,50 D NIL 19.7_ - Claysto at

-525 ENO OF BOREHOLE

REMARKS Cutting into cleystona at 19.71st (Iii). A piezometer was installed at 19.75m below basement floor level. A standpipe was installed at 8,40m below basement floor level. Borehole was backtillad with sand from 19.71n to 17.80m, bentonito to 17.30m, cement grout to 9.00c, sand to. nturl spoil to 1.00m and concrete pocockibozto ground level.

For explanation of symbols and abbreviations see Notet, pages (I) and (Ii)

LAO Re). 140. T’ S1 W872 I KING WILLIAM STREET - LONDON F.C. Li I

http://scans.bgs.ac.uk!sobi_scans/boreholes/1 065631/images/i 2524858 .html 21/08/2012

REGIS HOUSE

EZ:uzza A

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NUMER TPII4

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KEY

- BOREHOLE LOCATIONS 55

’ BOILER ROOlI RIAL PIT LOCATIONS

RrcE; fCD.C7 I ri. LJ

1P121

TP 124

Ogo! Ki rva . ..WIL.L~tAm

0 50 too SUB-IAEHENT

LTG

EXPLORATORY HOLE LOCATION PLAN

FISH 5r55.L-r, HILJ...


I I I

St Swithins _________ House . -

Courtyard

BH ml -

No 12 No 10

No 7-9 c 5

(arinon street I. Saint Sthi ms, Lane

ury Laboratories Site Investation Ltd I SCAIL

nts Swithins- Lan& SITE PLAN

IMP- 73T E I +$tt -A

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Page 2 1 Borehole TQ38SW1981 I Borehole Logs Page 2 of 2

3 T aa&\ ici

’)LBURY LABORATORIES SITE 1ITÆGA1I6111 LTD, AIhuvy Wjfard Sign".

I SOTIEHOLENo.

1

CONTRACTSt � Swithine Lane REPORT No. 789/JCS 1’

Andrew, Kent & Stone ci O.D

St. Svithin* Lana- t28,67 London, E04 28.6.75.

Yyp5snd13Ia.ofBodng Shall and Auger 200mm din.

tir ftum Wow LwMs Recoroad Dud!Ig 9ocbe rn

1 8.50 (mod) 26f0 /b -.

2

___ Nab Depth 18000 10050 CA&V 10.00 9650 VW" L.yeJ ’PI 70

4 hours extra time manoeuvring rig onto and from borehole location

SrnpIu

M

S.P.T. S$.2Omm-1m DS$dDn

N LoWid

Void tground floor to basement)

H I

3.00 Made ground (0.15m concrete slab over black/brown sandy

11 D 6 clay with brick and tile .J. fragments)

4.50 1/2 U 4.705.15 Brown clayey sand with

3.00 111

0 Ver)r dense brown sand and 1/:3 0 5.50 54 gravel . I

1/4 D 650 53 0.

a:.

/ ° 58 -

116 D 8.50 48

___

MGRD

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Cod. U_n 5 D-LjD. J-4urmp4s W-Wa.

to tC4 - IæOAEHOLE.No.

ALBURY LABORATORIES SITE INVESTIGATION LTD, Albuvy, Ouildford, $ufNy. Czmt!nuaf(on VW W No. 1

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CONTRACT St. Swithin. Lane REPORT No7890CST

papth m

SP.T. "li

sid 00. NO. N POI ELI , -

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Very donee rom sand and ’’ ’gr.i (contd) 5ulIw.

960 . 1/7 J 9.73

itiff, becoming very stiff

1/8 U 9.80-10.2 g?e /blue fissured silty clay witti brown mottling in the upper levels (London Clay)

3 11.00 15 I:- ....

i/lou 11.30- 1 1.5

1/11 3 12.50

-.

1/12 U 12.80-13. 5 I -

1/13 3 14.00 - -. 04 U 14-30- 1 4.’15

1/15 J 15.50 1/16 U 15.80-16. 3 - -

LI. RIL C.

1/17 3 17.00

1/18 U 17.:30- 1 7. 5 3

’’J I -(I Ill....,

18.00

I;l.I-IIC , :11.1 I-I I C

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Page 3 1 Borehole TQ38SW1981 I Borehole Logs Page 2 of 2

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is

1 139

’11.3 TO 149

A t4 0 IV

I 106 I

Ii ....�

$ 0

112 ’

B H I

6 1/ 4

II 1

24

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.-- ..---- /

SITE PLAN - 22 - --

SCALE 1:500 -.

1p�DENI BOREHOLE _- - -

ART TRACED TRACED FRC*I DRAWING SUPPLIED BY CONSULTING ENGINEERS I 1 i

511007 CANNON STREET-LONDON EC.3 FIG 21 1LIr._

’n

http://scans.bgs. ac.uk/sobi scans/boreholes/1 06605 0/images/i 252555 8.html

21/08/2012


KELURU OF BOREHOLE ? ( H r)T

D*ter of borinr.....Q:.?.Q. .... ....

N.tOd of bOrin....HELL....M’t.Q L.ininQ tubes: .... Q.jP.fl ............................

kIIy vgr.us

Depth toter

Depth

i.; Tub.

Log" Otl Description of Strat&

-

Type Vfl

_73 !t__-

075 8 5

: ri GPO I .1

FILL Bvowt sonvI III SiLt, ctvq AKOL brck) -

- -

v � p

.

_.o �

V � 0

-

4.0

-

-

Met bvoWt4yIRIRAVEL,

S u

130 6D (.26 L L!5 c.L

- - -- -.�--, -

Q.

-

2.46 - - .-.--.. -- .-.----

- - -, - 15.0 - -

4..2 iilL

- 5�05

- 5 E - D

5.60 % II

i=

..--

Fwns bro w n sy CLAY L C..

=I -I

t1ty CLAY

2r a

to k ! Eat!

Ufl MIL _ -

-- . -

S5125

9.10 -

- ao=

ii 1M ikL

- SO IQ.

�yçeoy. samp , i.: U141

-102.(4in) diameter

D - disturbed ample. 10 - bulk disturbed ample. V - n. test. SE ) - standard penetration test.

I - dnacnic tone penetration tefl.

rigir. in brackets Is No. of bios. for piCtratlon given I Opth Iumn iue Not.u, page ii.

Re=nnrikn;i- 1 =1. = I .!. �iI == Ho pevtott.

-

- -

depth to water o1uen $ refers to stsnptpe wCtSr depths, and P to pI.xometsr depth,.

Lib. Oaf. No. I0087

- --

CANNON STREET LONDON EC 3, -- -

’ � t

bl

II

http://scans.bgs.ac.uklsobi_scans/boreholes/1 066050/images/1 2525561 .html 21/08/2012

Co-cidatTatioc1) OroOnd leve l (mAOZ)). Method;

EN 5.41 Cable Percussion - III II

03105194 to 09/05194

Depth 1240.

ofno)e: Role diameter: lCth)5d)aten Sheet -I

45.45 150mm ] 150mm 1 of 6 Michine Number

Strata my Description of Strata ’

od )- -t CONCRETE

°) 0.30 5.11 0.50 4.91 1 MADE QROUND: Brick and concrete , rubble.


-I I

REGIS HOUSE

B;3!186 I LAND SECURITIES PROPERTIES Ltd BH 1

1.00-1.45 2 BC 5

gravelly 1ne to coarse sand. (ravel comprising brick and concrete. @ 1. 00ra: becoming a firm dark brown friable sandy very gravelly clay.

180 5 1) 0.80 3.61

MADE GROUND: Soft light and dark brown sandy 2.00-2.45 4 DC 4 gravelly clay with occasiotial brick fragments. 2.00m;

’I locally gradingtoll tthyey silty sand and gravel. tI

3.00-S.45 6)7 acm u 300 _141_ - Medium dense brown sandy subaxiguiax/subrounded fine to coarse GRAVEL,

- k’. .:��

4.00 8 1)

- .,, 4.00 1.41

- I.IIUt. i-I I-I -I

.,. .. ..

- soft light brown sandy to very sandy very gravelly

4.80-5.25 9 U (16) .

3.30-5.75 10111 D)BC 4 - o .’

6.00 12 D 6. ..' 6.00m locally appearinwith nogravel content -veined. - and brown, orange brown an dark grey

6,30-6.15 03 U (3)

6,80-1.25 14115 DIaC -,

’1r

Brown sandy subangular/subrounded fine to coarse :,� - 7.30 OdD :o.L2io...i1LGRAVEL. - - --

h/i’s fl/u L) : ._iit an. softId findirwn extremely closely fid I

Stiff dark grey brown slightly mottled orange brown CLAY of orange brown silt to -

- with occasional pockets

a.0om------------- --- - -

Boring Progr Water Obs, Chiselling Remarks: Date -

1i ’f ’i - jj ’p - - - j -- SPT’s suspended at 30.00mby engineer to 310w ,rogress.Extensometer installed

due to - -_1

3’5\94 Bd 2.10 2.50 Thy 45.45m. Eight magnets placed 1 as directed by the 4\5\94 Steot 2.50 2.50 Thy Engineer.

St 0Q1 240.i 7M0 5.85 5.00 j , I Bad WAS 8.00

S\.R94 Stan 10.45 9,00 For abbreviations and. - 8\5’94

Bud Stcet

800 31.10 symbols see key sheet LTG

= Sttike 18.45 21.20

8.00 8.00 1 21.20 21.20 1 DIS = = - UJt/tteh iOI 180

RUN Secle;1:50 Proccoeeu ts ortt wi– reoceotea by: Lcged by: All ncioiit inxnees B5593C1, 555750 cod AGS i1adeeth T. Kirby M.J. Sharratt -

http://scans.bgs.ac.uklsobi_scans/boreholes/ 15624750/images/i 51 06927.html 21/08/2012


¶ I_I

49 F4ne

Ii REGIS HOUSE BFCIIOIeYIO:

B 3 1 8 6 LAND SECU1UTIBS PROPERTIES Ltd BH I Co.oiditatee QlaOoTgl); - Geoufld level (niAOD): Method:

EN 5.41 Cable Percussion 11...,.

I IHl -u-.- Depth oIHole: Hole we5 1. H

03105194 to 09105194 45.45 150mm 150mm 2 of 6 taclineumber

Mples & Tests Strata Depth No. Type Depth Description of Strata ,

rsa

I o DS zo Stiff dark grey brolvil extremely closely fissured CUY.

- �H-l:..-H :HjI I.,H.-

:- /

I: 9.00 211)

1 ..9.5om; becoming very stiff :-

10.00

IF

23

I

D

Ii II III I

11.00 2.5 D

11.5041.95 26 U (50)

I - - / Hl --9 00424527129DS 30

I .

1300 SOD ii

15.50-13.95 30 33 (55)

II IH9II :E:l 9I9.IFH.1 I9llHUH

14.0044.45 31132 1)5 34 L4 -

- -- /

I 15.00 33 D :

11i.5015,95 34 U (57)

16’ 16.00

Progress Water Obs. Chiselling Remarks: Date Time Dtpth Cut* t er Rose j SPT s -suspended at 30,0Cm by engineer due to

slow installed to progress.Extensometer � 3’5W4 - Reed 2.50 - 2.50 Thy 45.45m.Eight magnets placed,as directed by the 4$\94 Start 2.50 2.50 Thy Engineer.

Stxtke 7.00 2.0 1.00 3.95 8.00 1.1 I 5\3’94 Steit 10.45 8,00 For abbreviations and 8\5\94

End 18.45 800 31.70 31.90 100 symbols see key sheet LTG Sted

Stelk 18,45 21.20

8.00 8.00 21.20 1 21.20 1 eete I - _ClBJtede 101 teSt

scale. 1:50 1 itoceeind in tie Processed q: togged by;

-,

All dienenejerna tee melene � I 35930,2135750 and ACTS T. Kirby M .J. Sharratt

http://scans.bgs.ac.uk/sobi � scans/boreholes/I 5624750/images! 15106928 .html 21/08/2012


. -.

. II

REGIS HOUSE Clint

B3!.1;8.6!. LAND SECURITIES PROPERTIES Ltd

Record of Bo.ba1c No

BH1

binNninbr

Samples& Tests StTaL.J Depth Mo. ip nro Description of Strata

16.00-16.45 35136 1)3 36 - Very stiff dark grey brown extremely closely ---.---- -------- -----

fissured - . CY. -. - . -

/ - -.

17.00 37 3) . - #

17.50-17.95 3$ U

18.00-/40DS38 .. .

19.00 41 1) .

1950-19.95 42 U (60)

ö00.4S 43144 DS .o -

21.00 45 3) t) becoming with occasional small 21.20 90 w pockets/traces of fine sand to 2.00m.

21.50-21.95 46 U(60) IU� - LiI _ I

22.00-22.45 41148 1)9. 42 22 .

23.00 49 1) . 2300m: appearing locally intact and with thin laminations o

3 flight brown fine sand.

so U (60) ..’.@23iu 5Claystone band.

24.00 9

DateBorre Water Obt Chiselling Remarks: n - -- -1SPT’s suspended at3O.00m by engineer due to

--slow progiess.Extensometer installed to

sind 2.50 2.50 Diy Engineer. r315%94 EM2.50 250 fliy 45.45inight magnets placedas directed by the

1c]Q,.250 1.00 5.85 8.00End 30.45 8.00

start 1045 8.00 End 18.45 1.00 31.70 3190 For abbreviations and

894 Slit 1&45 8.00 . symbols see key sheet LT StÆkn 21.20 8.00 21.20 21.20 iIs

= = = = GHItndi 101 Pb0lZ 01

RON t1:50 Poced in accorn Poesd by nj -. ... BSSPI3O. 8$5730 *nd AGS )d3XdZ T lflrl M T ch.-.-,n

ijiitnatn (itio1) Ground 1ov1 (iuAO1)) Method;

EN 5.41 Cable Percussion hi DcpthotHolt: Role dEa.i ILI Cigdiometer

shad’ 03/05/94 to 091 05194 45.45 150mm 150mm -- 3of6

http ://scans.bgs.ac.uk/sobi_scans/boreholes/ 15624750/images/i 51 06929.html 21/08/2012

Co-ordfnatos tiona1): Groui4 levd (MA MOW:

5.41 - i -CabIe Percussion Depth of Ho10 IN

Roit dioroetet; Cuing dinnieler. Sheet;

03105/94to 09105194 45.45 150mm 150mm 4o16 Mact3 �lne Number

65112

U 1 (100)

66 12

s & Water Obs. sinx I Wiler I Rcne I

31.7 5m.- claystone.


N Y.

Project Name : REGIS HOUSE

oo ; B11I86 LAND SECURITIES PROPERTIES Ltd BR 1

Saraples&Tests - Strata Description -

- ::r.: 24.00.24.45 51152 DS 44 -

-1 Very stiff dark grey brown extremely closely fissured CLAY - locally with some/many fine gravelmize pocket;

-.

-.

- of fine sand. -

U 25.00 53 D beco with thin lenses of -

[email protected]: occasional 1ig it grey sand to m.

25.50-25.95 54 U (65) -

26.00.26.45 55156 123 I 45- I I I I

27.00 57 12 . . .( 27.00m: locally appearing intact. :-

1 27.50-27.9558U(67) 28.00-28.45 59160 125

I

29.50-29.95 6tJ62JIJ

1 30.00.30.45 63164 DS 50 ... 3o.O: locally with traces fi

- fissure surfaces.

I 3 00

31.50.31.70

31.75

Borit

I Date Tit]

� 3’t5\94 End 2.50 2,50 Dey 45.1 Sti 2.5tl 2.50 I)xy I Eng

� I Stelke End

7.00 10.45

2.50 8.00

7.00 5.85 800 -

5594 Start 10.45 8.00 End 18.45 8.00 31.70 31.90 100

-

I 8i594 Start

Stelke 18.45 21.20

8.00 8.00 21.20 21.20 Wa

= = = = I 1:50 by:

dd All

Pzoceaaea jnaeeordanee with 055930,

~7 _

nd

T. Kirby

suspended at 30.00sn by enolneer due to Irogress.Extensometer instaiTed to n.Eiglit magnets placed,as directed by the

For abbreviations and I symbols see key sheet I LTG 001 ttoa,..eto .,arr, 1I, j Logged by; RUN

MT. Sharratt =

http://scans.bgs.ac.uk/sobiscanslboreholes/l 5624750/images! 1510693 0.html 21/08/2012


Page 2 of 2

lLL --Cl,IlL1 Pi t

REGIS HOUSE R 8 ot

�

1 client LAND SECURITIES PROPERTIES Ltd BH 1 Coadthotcn iatonl): Ground 1uv1 (nAOD): Meiliod:

EN 5.41 Cable Percussion Depth of Hole:

I I I L I

fluTe diem ¶ur 1 C9iemetcx Sheet. I I

03105194 to 09/05194 - 45.45 150mm 150mm 5 of 6 Mnetmnbue

Saniples& Tests Strata Description of Strata

Depth lo. e CPT neptii

In)

32.00-12.45 67 U (00) laminated

125O - 68 U : becong extremely el oseifisØdaædhh with occasional small pockets/lenses of fine sand. .-

33:00 69 U

� - �

- - ..

/ ..

iIl lI:sI LTLISU

$40 11 D ...@ 34.50m: appeasing slightly friable and more silty. --

35 00 12 D --

Very stiff dark grey brown intact sandy CLAY.

I36.0336L45 73 13 (90) =111 _IIl:

3&50 74 U ..,c 36.50m: becoming extremely closely fissured and with pockets (Thie gravel size) of - frequent clayey fine sand grading to a very clayey silty fine sand.

37.00 73 1) ...@ 37.00m: becoming a sandy clay with frequent sand

- pockets (as above). .-

/

I I : - LI I nll ’/ /

38.00-38.43 16 13 (97) 3

38.50 17 0) ... 38.50m: locally appearing as extremely closely fissured CLAY. :

39.00

I IL - L

70

:.LLL

...@ 39.00m: appearing an intact sandy CLAY with occasional small pockets of sand.

LIIL Ij.IlIl..L

-.

-.

-

Boring Progress & Water Obs. - Chiselling Remarks: SPT’s suspended at 30.00m by enineer due to slow progress. Extensometer installed to 45.45m.Eight magnets placed as directed by the

--------.-------

� � jj.

3\S’94 Bud 2.50 2.50 Dry 4 11 Stan 2.50 2.50 Thy Engineer.

Strike 7.00 2.50 7.00 5.85 8.00

S\S’i94 - L L -I :- L Li ’�L :1 L -I il I SU \.y

For abbreviations and 1 St=’ WAS 8.00

End

Stan 58.45 18.43

8.00 LOG 8)5154

3L70 31.90 symbols see key sheet LTG

Selke -. .00 21.20 21.20 nfu - =

GE/tech 101 21.t

I Seek. 1:50 Pro dOe ccotdunc with Procee*nlby: Logged b

BS3930, B55750 aid AGS stM,derd TKirby M.Y. Sharrati =

http://scans.bgs.ac.uk/sobi_scans/boreholes/l 5624750/images/i 5106931 .html 21/08/2012


FU1-

- -

Project Nune:

REGIS HOUSE .

rd f Bit-

Prqect B 3 1 8 6 [

LAND SECURITIES PROPERTIES Ltd BH 1 co-owirmtes (11460w); Grousd 1vct (mAOD): Mttho&

5.41 Cable Percussion - I Depth ctRo(e: - flIe emeter: Sbe,0

03/05/94 to 09/05/94 - 45.45 150mm 150mm 6 of 6 um vtecbjneNbez

pes & Tests Strata _v

Description of Strata

M. ~ T

40.00.40.4579U100):

40.50 80 D 40.5Cm: appearing anextemely closely fissured ...@ CLAY th traces of fine sand on fissure surfaces.

41.00 81 0 .. .c 41.00m: appearing a sandy CLAY.

42.00.43.45 82 11 (100) 47 -

1 , .l,U C

-

42,50 83 D :- ...a 42.50m: appearing an extremely closely fissured - CLAY with traces of fine sand on fissure surfaces,

locally pyntised and with fine gravel sized pyritic - 43.00 84 0 nodules.

becoming a friable sandy to very sandy -

- ;ili I.II]!H.UI!j �.i.,IiISIII--y U -

44.00-44.45 25 iT (110)

_4 .L ...a 44.50in appearing with some dark green mottling. 44.60 87 D Very stiff light grey slightly friable sandy very silty

45.00-45A5 88 I) 96 4 48.10 2,69 y.

[email protected]: appearing with pockets of sand. - - Very sti brown slightly mottled brown slightly mottled

: light grey extremeiy closely fissured CLA’. : 4

(:.I:I:.-

DOREHOLIi-COPLBTE AT 45.45m

I( E.iI�L.I..�I - I - :

Boring Progress & Water (lbs. Chiselling Remarks: SPTs suspended at 30..00m by engineer due to ;;- . -- -

- 3\5’94 End, 2. 50 2.50 Thy

-__-_-__-- slowprogress.Exlensonaeter installed to 45.4Sni.Eight magnets placed

Stut hI 2a n as directed by the

Engineer. r .

Mu5. 7lYJ 1 � ,zQ 7.00 5.85 -

9.00

l3 ad 10.45 8.00 For abbreviations and 5’5\94 St,zt 10.45 800

8’.5\94 End 1 Staxt

18.45 1845

8.00 8.00

31.10 31.90 lix) symbols see key sheet LTG

20 8.00 21.20 21.20 m/s - - GEttnth 501.

- RON I 150 prosedby: Logged by;

Ldtxnen,ions B55930. 285150 ied t AGS £ndMd.S T. Kirby M .J. Sharratt --

http ://scans.bgs.ac.uklsobi_scans/boreholes/ 15624750/images/i 51 06932.html 21/08/2012

Tests Depth No Typo SPI

m)

0.32 1 B 050-050 7. B

3 BC

L50 B

2.00-2.45 5 BC 28

2.60 31 W 3.80 6 1)

3.50-3.99 1 BC

4.90 8 B 5.00-3.45 9 174 (27)

5.50-5.95 10\11 D\BS 23

6.50 12 B

7.00-7.45 13 174 (33)

.30-795 - i4\D\DS i5 33


Page 2 of 2

[iciName: R r REGIS HOUSE BoeNo

B3i18:6 LANDSECURIT1ESPROPERTIESLId BH4

mi a 10 -~’

a S j

I I.: I’

it .

IL

Co-ordintci (Nationg) Ground level (inAOD): Method,

EN 6.15 1 CABLE PERCUSSION Dat 0i5ioI .OiOWOi I:1 °’ -

1 3 /05/94 to 16105194 15.50 150mm ____________________________________ 150111111 1 of 2 i-i .i IIL

olSon Number

Strata -

Description of Strata 1 o - -

CONCRETE MADE GROUND (Dark brovin sandy clay and fine to

thnt gavel with occasional brick fra iits)J

Medium dense to dense orange brown sandy sub angola to rounded thie to coarse predominantly fine flint GRAVEL.

[email protected]; locally grading to a SAND and GRAVEL : -

0

0 - F -

0 o z

0

g

o o o

4 .0

9. .0

1.25 - Soft to firm becoming firm brown extremely closely fissured CLAY with occasional pockets of sandy clay.

_QL. ...t 5.5Orn With occasional mudstone inclusions. = Stiff dark gry-12town extremely closely fissured CLAY.

....@ 630m with traces of fossil shell fragments. 0 --

F-’ >< >< ><

>F

ater Obs. I Chiselling I Remarks: r Rose S]Cd I Prom To I IrSins

1515194 Sioft 0.00 Nil Dip 2.70 2.00 230 2.60 3.50

End 4.00 4.00 2.70 16’F5’94 4 .65 j ’ 1166’ 2.55

LIIU --’III :11-I LI.ft

-

End 13.50 5.50 Dry For abbreviations and symbols see key sheet LTG

- GB/Inch 101 j1OJ.M.D4nr.son Scale : by: b

BSSP3O,flO and AGS1tmjncds 11romstIl

SM SM

http://scans.bgs.ac.uk/sobi_scans/boreholes/1 5624760/images/1 510693 9.html 21/08/2012


FTOJCrt Name: REGIS HOUSE

Revord of BareholeNo:

Client; LAND SECURITIES PROPERTIES Ltd BH4

Co.ormtas(Nation2): Giound level (mAOD): Method;

EN 6.15 CABLE PERCUSSION Depth ofHole: Stole diamete I F - Ciia CS meter Sheet

13105/94 to 16105/94 15.50 � 150mm 150mm 2 of 2 Macbina Number

Samples & Tests Strata Depth No. tTpe neptia Rt Description of Strata

�- �. = Stiff dark grey brown extremely closely fissured CLAY -:

:: : (40) : [email protected]; becoming very stiff.

9.50-9.95 1819 D\DS 26 [email protected] with some brown silt partings. :

F _ -I IF -.[.. -.,.� HF 7. �n- 1,11-1

10.50 20 - 9O)

11.00-11.45 21 114 �(47)

22\23 mns 28 - N 11.50-11,95

001 12.50 24 13 -

13.00-13.45 23 r4(5: ii

13,50-13.95 26\27 DWS 31 =

Oil, 14.50 28 D ... 14.50m With traces of fossil shell fragments.

JFI

15.00-15.45 29 124 (60)

.30 30 D 1550 .9.33 F

13O1EHOLB CO1’1PLEThD AT 15.50m - -

L -

Boring rogress& Water Obs. Chiselling Remarks: - - � -

j From To NU Data Time Depth Cas104 eaJmi

izwt Start 0.00 Nil ney

I I E 114 Std a 16’*5\94

2.10 4.00I 4,00

200 I’400,

4.00

2.70

2.55

2.60 3.50 2.70

j End 15.30 550 Dry For abbreviations and -

see key sheet LTG

j� I’ symbols

- � GEteth 101 areaIn CI

1:50 Pro dDCOWth ’ by; Logedby: All diaeenr in BSSS3O, 3S5750 end MIS ISM ISM

� rt.

hap ://scans.bgs.ac.uk/sobi_scans/boreholes/1 5624760/images/i 51 06940.html 21/08/2012

22.1 REGIS HOUSE

LAND SECURITIES PROPERTIES Ltd

Rtcord of Datho1c No:

BH5C


I

to

I Project

I I Sample s& Tests

Dept NO. pc CSFT

I I I -

I 3.00.3.45 2 BC 4

I I 4.50.4.95 : : 8

I . 5.50 5 1)

20.00 150mm of3 LISOthth l IIMaiiurnb

Strata Depth ’fj’ Description of Strata . ’.

ow 64

TRIAL PIT 112 TO 2.50m.

MADE GROUND (Brown sandy fine to coarse predominantly medium angular to sub angular gravel with some soft brown clay pockets. Gravel is composed of flint gravel, shells and shell fragments, brick and tile fragments.)

Loose- to medium dense brown very sandy sub rounded fine to coarse predominantly fine GRAVEL. Sand is fin to coarse predominantly coarse.

lnalu (Natoil): Osind level (inAOP): Method - - - EN 5.40 1 CABLE PERCUSSION

DAM - Depth of flole: Hole dlamelc: I Csirg diemelu: I Sheet

11/05/94 to18105194

6.00-6.456BC13-

:7 _:022_ 6.30 7 1) Firm brown mottled orange brown extremely closely I .

fissured CLAY with occasional rounded fine flint gravel.

9 U ... @7.00nibecoming stiff. - I 1.00-7.45

10 1) 16 : @ 745m becoming with traces of orange brown silt Ct 7.504M 11 DS - on some fissures and no gravel.

- Progress Water Ohs. Chiselling Remarks:

I Trial pit 112 excavated to 2.50in below basement Date Tim e Dqm- R. -- - From - level prior to drilling.

17594 start 2.50 2.50 2.40 2.40 6.80 End 14.00 7.50 Dry

i8’5\94 Start 9.65 1.50 Damp � 2000 7.50 Damp E nd

For abbreviations and symbols see key sheet LTG

- - - GE/tarh 101 uenlr.u,i Seek: 1:5 paaccordanceir Process by; Loedby:

tt1 [i dimexiajeeg BS5930, 355750 and AGS standards SM SM

http://scans.bgs. ac.uk/sobi_scans/boreholes/ 15624763/images/i 5106941 .html 21/08/2012

Page 2 I Borehole TQ38SW42901 Borehole Logs Page 2 of 2

p~jojedJjName: � I REGIS HOUSE Boreho’k

ad 1 8 6 LAND SECURITIES PROPERTIES Ltd BH 5C%

RdInatu (National): Ground level (mAOD): Meiliod

Ic An (’ART i PPPCTTSST(IN

I I k.,U-U U -’--’U

t)ç,th I Holes -

Enla diimeter -’ ________________________

fieing dmetur SIItee

[17/05/94 to 18105194 = 20.00 150mm I 150mm 20f3 Machine 14MOM

S & Tests Strata

I Depth No. T,pe Wr repth Description of Strata I (-I Ca)

IL - : �

Stiff brown mottled orange brown extremely closely Assured CLAY .

.-..UU!!;r-.: U.. � !-! .UU UUU

-

I -2 � 900-1000 12 B Stiff dark grey brown extremely closely fissured CLAY.

I I 10.00-10.45 l314 DU 70)

10.45 10.50-1093

13 16

D DS

: - -

�@ 10.50m appearing locally intact with traces of fine sand size shell fragments to 12.50m

I 11.50 17 D

� : 12.00-12.45 II U (90)

1 12.45 19 D 12.50-12.95 20 1)5

IT

11.50 21 1)

14.00-14.25 22 U (100) [4

32 [email protected] With some grey silt traces on some 14.30-14.15

...@ 14.30m Becoming Very stiff.

15.10 I

-9.70 �

15 .30 990 Hard grey MUDSTON. z V stiff dark grey brown extremely closely fissured

15.30 25 D

Boring Progress & Water Obs. Chiselling Remarks: I Thin Depth Cuing Water Rain Sealed From To Mine Trial pit 112 excavated to 2.50m below basement 1 ------------------------------- dri

eve] prior to drilling.

175\94 slazt 2.50 2.50 2.40 2.40 6.80 End 14.00 7.50 Dey U U U U

l&’i594 Slant U96S 730 !

Dauç U! I U

I Bad 20.00 7.50 Damp

For abbreviations and I symbols see key sheet I LTG

I GE/inch 101 P.Caa.iZCeT. 1952 REN, scale- 1:50 Proonuedinaceurnewjth Promseedby: Logged by:

All B35930. BS5150 and AOS standards SM I SM =

http://scans.bgs. ac.uklsobi_scans/boreholes/1 5624763/images/i 51 06942.html 21/08/2012


I - . - REGIS HOUSE Borehole No:

LAND SECURITIES PROPERTIES Ltd BH 5C [fneIes(NatIocn1): Groond level (tKIAOD): Method:

B N 5.40 CABLE PERCUSSION

17105/94 tdi8105194

--------------- 1-j- I - 1 -1 Boring Progress & Water Obs.. Chiselling Remarks:

Dele Time Dj,dL CuingWeter Rose Sealed Fr= TO mi.Trial pi 112 excavated to 2.50m below basement level prior to drilling.

i7n94 Sled 2.50 2.50 2.40 2.40 6.50

End 14.00 7.50 Dxy

18\504 Start 9.63 7.50 Damp End 20.00 7.30 Damp

For abbreviations and symbols see key sheet

Procoue4 In accordance with B55930. ES5750 and AGS dandards SM

SM

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I I I I I I .

1

I .. 1. I I I ’ I

Depth of oIe: note diameter: n; ...eep ololOO. OOol

20.00 150mm15Omin 3of3 Strata

Depth R14 Description of Strata

� VTZstiff dark grey brown extremely closely fissured

... 16.50mharcl grey brownmudstone band.

_22 .. [email protected] with some brown fine sand. - ROI R1-TOLl COMPLTP1) AT 20.0Dm.

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1 KEY TO BOREHOLE LQGS FG)~~~ F-C)L SOIL CLASSIFICATION ’ ’’ STANDARD PNETRATON TEST

SANDS AND COARSE SILTS

CLASS TYPE SYMBOL GRAIN SIZE

BOULDERS

LARGER AN ILIA

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RELATIVE DENSITY

ANGLE ofNT. FRICT, -

0-4 Very loose < 30

4-10 Loose 30-35

10-30 Med. dense 35-40

30-50 Dense 40-45’

Over 50 Very dense > 45 �

VII Aftygrh’ PO’,

CONSISTENCY of COHESIVE SOIL CLAYS AND FINE SILTS

FIELD COHESION CONSISTENCY IDENTIFICATION kN/m 2

VGry soft Can squeze < 20 through

Soft fingers easily 20 to 35

Very stiff forefinger 150 to 200

-. Can scratch

Hard with > 200 fingernail

Firm Can dent with little 3510 75

finger

Stiff Can just 75 to 150

(FM.C) GRAIN SIZE of SAND or GRAVEL

BOREHOLE LOG SYMBOLS- 1 1 : Fine � Medium � Coarse

U 0.1 Om dia. undisturbed sample

U ( ) Undisturbed sample (diameter)

Sample not recovered

0 Small disturbed , sample II

B Bulk disturbed sample

i Ground water first noted

W Water sample

N ( ) Standard penetration test (blows per 0.30m)

VNI ( )

Vane test (natural shear strength kNIm)

VR ( ) Vane test (remoulded shear strength kN/m 2

CR Core recovery FOUNDATION ENGINEERING Lou.

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British (8) Geological Survey

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Page 3 1 Borehole TQ38SW2048/F I Borehole Logs

Page 1 of 1

British Geological Survey NP.TUAI. P4VIRQNMENT W HIARCH cuuNcI.

Report an issu e with this borehole

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SCOTT WILibN KIRKPATRICX & PARTNERS LAND SKURITIES (MANAGEMENTI LTD Ncft Z.U2- 904-4 JOREHO&I N.F

C~Mtl.g Ci.3 ..d E.91...,, KING %iVILLIAM STREET HOUSE

FIGURE r-A-161 f6fa

LIFIVESTIGATION

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SCOTT WILSON KIRKPATRICK L PARTNERS LAND SECURITIES (MANAGEMENT) LTD 501EHME N.

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INVESTIGATION

C_wltillg Civil ..d ’Str"wol rNiciews i WILLIAM STREET HOUSE FIGURE r__A15_]

Fi,ld Walk by: FOUNDATION ENGINEERING 00 SITE

- SCOTT WILSON KIRKPATRICK A INCH I APRIL

NEI PARTNERS

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NATURAl. IN’ROP4MkNT MRSIARCH COUNCIL Report an issue with this borehole

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SCOTT WILSON KIRKPATRICK & PARTNRRS LAND SECURITIES (MANAGEIIENT) LTD ROREHoE0m

Co.oItR C,,I d St,,I KING WILUAM STREET HOUSE FIGURE

- SITE INVESTIGATION s.. I I

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Page 1 of 1

British (! )

Geological Survey


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SCOTT WILSON RIREPATRICK & PARTNERS LANG SECURITIES (MANAGEMENT) LTD..-. - TRIAl. PIT N.- FT-P-21 Consultin Civil and Structural Engineers.

RING WILLIAM STREET HOUSE FIGURE £l

Field Work by FOUNDATION ENGINEERING LTD. SITE INVESTIGATION Method Hand Tools Coordinates ---- -- ----E

Dates 15 1 .79 - 52.79 N

Hole Dimensions 2 .6S m. 52.10w. nruirrarrr, Ground Level , --- Tr 1 ..’ 0.0.

CONCRETE CONCRETE CONCRETE CONCRETE -

al PIPES CLAI~~!Ik fragments Metal PIPES metal PIPE C NCRE

Firm grity-b� gfowtly

Linilt of ,

Mtl ’

.11 b,icklubt,ir wirly So dy silty CLAY

9roand anCtr5Ifl

) Ce ram ic PIPES

Soft dark grtybrAwfl

Corners of Irrttt urRotity Randy 5,115 Sail to frnrQrtl -NrOwn /______ IandcIion bIk- CLAY with ShelLs Rod

ehaik CLAY with shells and . ____________ srnoaonR

will b, ck rubIll

otcoSioriat bruI, rabbit roornents.

Shortered Ap5rOoirYRft standing CONCRETE fl

astor level TIMBERS

Fire, 5,,(-brawo graei.5 � silty CLAY with sandy thella and torso brich rub bl..

� COytrohls nbStUIt by snorin9 I

Rough CONCRETE with briCk rabbit

Apparent best of etiner.t

NORTH FACE EAST FACE SOUTH FACE WEST FACE

SCALE Htri.t Vert.

http://scans.bgs. ac.uk/sobi_scans/boreholes/1 59481 89/images/i 5601 309.html 21/08/2012

Page 2 1 Borehole TQ38SW4339 I Borehole Logs Page lofi

British Geological Survey NATURAL ENVIROMMINT 1 11 95111ARCH COUNCIL Report an issue with this borehole

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SCOTT WILSON KIRKPATRICIc & PARTNERS LAND SECURITIES ( MANAGEMENT ) LTD. TRIAL PIT No. Cotnsulting Civil and Structural Engin eers.

KING WILLIAM STREET HOUSE FIGURE INT1

Field Work by OIJNDATION ENGINEERING LTD, SITE INVESTIGATION Mlhod Hond Tools Coordinates ----- ---- -E Dabs 26. 1 .79 - 3D- 1 m iS

- N Hole Olrnor,sioos t5nn. VI.3O,s,otIn,uo,. Ground LOIAli.js,.O.D

w-al I(� CONCRETE CONCRETE _____ _________________ RUS-E

TCOIC REr~E

MedIuw den,e I-Indium dense I’O"’ GRAVEL,CLAY

S w GRAVEL SAND d d SAND wIG 6 k

� d ty CLAY 6 s,’ i

CLAY 5.6 brick 661 SeC rod be bbl d

my-brawn wry sandy silly CLAY GRAVEL a nd

90 and EL

CONCRETE

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I J brews GIRYSY 9rOSnlly SenAr. ily

shy c.w.t SAND,bs.onn,s ,rAio n de. very sandy gravelly brown EIOYnY silty CLAY in places. grouChy

Generehly nwdwnt den nsf. SAND. brown cloyny gronnhiy

Cornnt of 5;117 6,11.1. SAND. Wit!. ncnos;000I Chalk

-

Wuir InVAl 1

LimIt at node 0mOund not 4.1-1�d

NORTH FACE EAST FACE SOUTH FACE WEST FACE

SCALE; IIArA.. V.,t,

http://scans.bgs.ac.uk/sobi � scans/boreholes/15948191/images/I 5601313 .html 21/08/2012

Page 11 Borehole TQ38SW1233/F I Borehole Logs Page 2 of 2

/ -

I II

V/I \ 20

iIH .

bp

UPPER THAMES 1lLCi\Ek THAMES 51,.-

I I [ 1T i.HI3R1\ \\ \I’7__-______--_-’

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RIVER

LI I

KING W ILLIAMLSTREET-BRIDGE RUCTlQJ

5it plan showing approx location of borehols

LI �:l ..LuI LH-1 ....

FOUNDATION ENGINEERING LTD C.F.66911045 JAN 1973

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(Brickwork atop sandstone bride. footings?)

7 ,9"

Loop. to sodium din., black silty

9pve1 with shell. and planes of VLk.

2’9"

Medium dooms coro. sodium fuss oilil angular ORAVIL with lerg. chill..

14 19"

Page 2 I Borehole TQ38S Wi 233/B I Borehole Logs Page 2of2 1

. c.. . flaz g

RECOWCF SORNMOLE

LocatIor KI!(G UILLTVIJ4 STRgEF VAULTS

BRIDGE Borehole DIa 8" ad "

Contract No. CF69/l045 Casing : 0" to 101 to 45f

Type of Boriæg: Shill ód After V

Date (started) 17.10.1972 Ground Level .. . .

Ih..tlof 2

Die Water SAMPLES STRATA

- DESCRIPTION OF STRATA

Casing Level Depth Type No. Legend Depth Thickness

2’6" D 1 V34 GROUND

V --:-: (Pavij eton, c,ody itoisy bickfil, brick concrete ?iece. an rubble)

5 10 " D 2 (I 20)

7’6" B 3 7

7 0 1 0" fl ,V 4 0’0

,0 .. .

12 9 6" 3 5 V

15’O" B V

6 15 1 0

17 06" D 7 17 1 9 (121)

CW

2O0" U 8

22 16" U 9

V

U 10

(127

-27)

30 , 0" U 12

32’G

:: f

: 2 35 10 ’ ZL2_

3519 6

37" D 15 (I � 31) Zb°.

40 1 O" U 16 400

RKS. It was necessary to use the ohiesi betuattz , 7’V’ and 15’0 Watip was added at4 1 0" to assist ia ,h.11io

£ r_V5

I

3 t

Soft to fira derk grey or,anic SILT

7’,.

M.dium din,tt sandy coarse nidiu* (int black on&yt;L with (LJ.tI

(Continued)

Foundation Engineering Ltd.


Page 3 I Borehole TQ38SW1 233/B I Borehole Logs Page 2 of 2

, -�.

RECORD OF BOREHOLE , No: _. flU JILLIAH STRF.k’t YALT!

Location LONDON DRIDGR Borehole Dia : as ad 6"

Contract No. Cr669/1045 Casing 8" to 10: 6

Type of Boring : sheli ana Auger Ground Level

Date (started) [ 12J0.1972 . .

Shoot 2 of 2

Depth W SAMPLES STRATA DESCRIPTION OF STRATA Level

Depth �Typ. No. Legend Thickness

40 1 0" 0 16 40’O"

7190 Medium deace sandy coerce .edlu* 42’G" 0 17

fin, black GLVSL with flints - 25)

:°.� 46"

45.0 DRY 45 1 0" - 46 1 4" U 18 DRY

476" 0 19 04N Stiff to rory stiff brown fissured

silty CUT

50’O"-51’O" U 20

0 21

55’0"-55’10" U 22

� Sod of Bore) 1.

36’O" v -.

http://scans.bgs. ac.uktsobi scans/boreholes/ 1O65050/images/i 2530526.html

21/08/2012

Page 2 I Borehole TQ38SW1233/A-F I Borehole Logs Page 2 of 2 7

.. t -.-�-

H

C. 2s. o-i-o

- RECORD OF HOLE

Location : Ma IIThLIrM STREET VAULTS Borehole Dia 8’

Contract No. : 1011001! IOG 0 04 Casing 8" to 50’0"

Type of Boring s�ii AM AUPr Ground Level

Date (started),. : 25?�12 H- S)2.,t 1 of 2

Depth of w ater - SAMPLES STRATA DESCRIPTION OF STRATA __ ____

� Casing Level

Depth Type No. Legend Depth orr

Thickness

� / WIN-, 2’6" 0

6 6" MADE GRQUSO (Graziit. piece., IrnTtnt .lab, clay

51 On 0 2 stone rubble Prd soil b.okf 111)

6’6" S.

70 6 0 3 5 6" (Briokvor…)

10 , 0" 0 4

12 1 ON

0 5 .-

- 24) 71 II (firs bleok SILT &o4 stony backfill)

17’6’ 7

� 19’ 6" 20 1 0 0 8 (..l4)

22’ 6" 0 9

25’ ON � 25)

0 10

12’ 9’ flack coarse aediva fine OIUVZL with cut, tiobir,tilee ,,ncl

27’ 6" D ill animal i’ojloC

30’ 0" 0 12 (1126)

32’ 3" 32 0 6% 13

- 4 0 3" Brown mottled oria SILT

!i 5t QW 1 19 0" 35 1 ON - 36’ 6" ii 14 � 19 1 On ,

C 361 6w

374 6" 0 15 4’ 9’ )ediia dense dark coarse �s,tiu tine .ilty, sandy ORAYgI O

COW� 40’O" - i6 _°’"

http://scans.bgs.ac.uk/sobi � scans/boreholes/1 065054/images! 12530523 .html 21/08/2012

Page 3 I Borehole TQ38SW1 233/A-F I Borehole Logs Page 2 of 2

- - r RECORD OF SOREN�aE o

XTG VILLIAM STET VAULTS Location. �. : LONDON DUDGE Borehole Da : a"

Contract No. cr669/1045 Casing 0" to 50’ ON

Type of Boring shill and Auger Ground Level

Date (started) 25.10.1912 of 2

Depth Water SAMPLES - STRATA DESCRIPTION OF STRATA -

I Casing Level Depth Typo No. Legend Depth Thickness

4’ 0’ (11 37)

!.diva dingo dark coarse OSdiu3 8 1 40’ II

� , , fins silty sandy GRAVEL

$2 1 610 D 17

I 4 45’0"�.46’4" U 18

47’ 6" D 19 15’ in Stiff gray brown fiiuur.4 silty CUT

50’O"-51’l" U 20

52’6" D 21

IV 50’O’ .:55’

2JL

0"� 5" 4" u

Tsid of bo:eboli

I I I I m.

The casing was not able to prevent i.upgsu from ibe,, the olaj

1

http://scans.bgs. ac.uklsobi_scans/boreholes/1 065054/images/i 2530524 .html 21/08/2012

Page 2 J Borehole TQ38SW2015 I Borehole Logs Page 2 of

I � �- .�� , S.

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Page 2 of 2

-

2 Institute of Geological Sciences

TO I �

it & in

- I -

or 1:10 000 Map Registration Na . Name and Nwnbcr of Shaft or Borehole: Page

Vo,.j’

’4 ’) NatiI Grid Reference

F1.4 H.7 . 1 it

Geological, Thic1ncas cIaIuition ’

Descript i on ofStratj1 metres metres

Brought Forward

T -

h I

" çiitr1d..iA..l.Lie. (?#t2.oD

�

vD -

,. 4,’ ’"

LC $k4J LW II A7 (0, �)�

32o

TO ?S, 20151 H2. 417S’

,’- c. � _______ l .

t u�-7 ,a..-J. &L esusL.i. a

9 f-’v,4A 1 ’�o’ - � . -A.’C~� 30~4 255’o

LC. Fw i(j 461 -v’

(IUtoZr

ICS 1106 000012/76 F

http://scans.bgs.ac.uk/sobi_scans/boreholes/1 066062/images/i 2525575 .html 21/08/2012

16’ "

4 Y. Y.

6 1 3" 5

D-" )’ 6 22’ 6"

Soft black and bravo sandy SILT with frequent 1er5e shells and stones)

I :-. AL’- .

:I.

D Ii

0

I,

D

0

0

7’ 9" (Dark brown silt, said end gruel, 2 itoog, picass of brickii and ib.1.i.)

r

Page 4 1 Borehole TQ38SW1 233/A-F I Borehole Logs Page 2of2 4

U R6

RECORD BOREHOLE Nor,t._ _OF flH: WILLIAM STRET V!ULTS

Location : LOflDOfl IMUDGX Borehole Dia e" and 6"

Contract No. Cr669,0 45 Casing : Be to 38 1 0"

Type of Boring e.011 an d Ground Level Date (started): L1101972

of 2

� Depth water SAMPLES - STRATA DESCRIPTION O STRATA of

Casing Level Depth Type No. Legend Death hickness -

0’O"

101~

’ 6" MADE QQflf (flardeor,, pieces of iron and Q,ossiun1 pie c es of tiuber)

10’O" (lf.4)

12 9 6"

15’O’ (N4)

17’6"

20’O"

’- 4)

22’ 6" .17’ 0" 22’ 6" Vi’

25’O".-26’6"

27 , 6m

U

0

7

8 20 1 0"

5t 6"

3’ ON

Firs to stiff bf

Firm to stiff gray brawn sandy silty S. � 3V0"-31’G" u 9

- -: CT

31’ On

32’ 6" 0 10

6’ 3" Tim (a.idim dos.) brown very sandy 35’ ON D 11 very g ravolly silty CLAY

(0 � 23) ---0

37’ 6" - )’ 0" U 12 37 3" 17’ 9" Stiff to very stiff brown fissured . uI1t7CLLY,. . LL

40’ ON 0 13 �-Li 40’ On contd..

Water van added at 3’ 6" to assist in .bullini3

http://scans.bgs. ac.uklsobi_scans/boreholes/l 065054/images/i 25305 30.html 21/08/2012

Page 5 I Borehole TQ38SW1233/A-F I Borehole Logs Page 2 of 2

C . RECORD O G ot 4

KIUO 4ILLL1 SThT ?cation LOJDO& ZDOE

ViUL?S Borehole Dia : 0" cmd 6

ontract No. : Casing 80 ti 30t O

ype of Boring . iei1 wid Ground Level

’ate (started) ’ t 2" of 2

Depth w ater - SAMPLES STRATA DESCRIPTION OF STRATA

Casing Level Depth Type No. Legend Depth Thickness

- 4s) O’ D 1

42’-43’3" V 14

-w .

5 off

.

47 6" - 49 1 O

..

b

.

15

.........

V 16 - 17’ 9" titf to very etif brovn fintrad

....... ...

atity CLAY

5OtQIt D

52’ ." � 54’ Of 0.. 18

30, on _DItT 351Ol D 55’ 0" Lcd of ’ornh 1.

I 1 ! �l I l__ �RKS:

http://scans.bgs. ac.uk/sobi_scans/boreholes/ 1 065054/images/1253 0531 .html

21/08/2012


-’ - ..

RECORD O 2

KIWO WILLTAA STh? VAULTS Location LONDON t3RODGC Borehole Da 8"

Contract No. : cr94o45 Casing e t45100

Type of Boring : Sball, aa4 Auger Ground Level Date (started) 1 , 6 ; i.i972

Sheet 1ot2

Depth Vh

SAMPLES � STRATA DESCRIPTION OF STRATA

Level Depth - Type No. Legend Depth Thicknen

-, Of 0"

7’6" ILM OR (nogn end hardcore)

, 7’G" 9" 00HOETE

I I I I I

4 1 9" I Loose ebu11 with ohak aod1eu of

NO- blaok silt, hardcore and brioI rubble

6)

l2’ G" 0 2 13 1 &1

:111 i Iini’;- D :.)I-.I Ii (N.)

9’ 9" Locae.madiiiti deiipe black eheliy - 17’ 6w D 4 SILT with gravel

A LL 20’O" r 5 (l12)

PRT tJRT .. -

25’ OR 26’ 50 V 7’ 3" Firm to stiff grey brown eliijtiy Stony eiity C-I.T

27’ M L.t

30f On X1 8" 9 30f 00

32’ 6" 0 10 : - 6’ ofl.e yellow and eray eiUy eaudy otaxse medium fins GRAVEL

0, � C -H II

351 On 0 11 - ’1)

36’ 6" .

’ 37’ 6" 0 12 39’ll" ’tiff to very cuff Uty CIAT - Landon Clay)

4.01

cantd4

Water added to assist in ehe11in.g between ground level and 229" and 30’ 0" and %’ 6",

ter aaaPlo taken at 30 1 0 -" a ground vuter observed in London Clay

http :1/scans .bgs.ac.uklsobi_scanslboreholes/i 065052/images/i 2530532 .html 21/08/2012

IHIItUrU

to ground vator observed in Loudon ’Clay

� - �

T1 I I RECORD OF BOREHOLE , No I. XIUJ IaLLIAH STREET VAULTS

Locatipn LOtDOU SRME Borehole Dia oil

Contract No. CP6645 Casing 8" to 45’ ON

Type of Boring : sei and Auger Ground Level

()ate (started): 6.12.1972 Shoot 2 of 2

Dtpth Water SAMPLES - J STRATA DESCRIPTION OF STRATA

Cuing Led Depth Type No. JLegend Dpth Thickness - 40’ 0" - 41’ 7"

H [HI I

42, 6N D H HI [HHHLH[ H U H

45’ ON - 46’ 5" B 15 7.

47 9 64t 0

HUH.

-50100 - 51t On U

52f 6w 0 2.8

5’O"56’5" U 1 HHHI

39 1 ll" Stiff to very stiff grey bilty CLAY

57 1 6" 0 20 (London Clay)

Go’ 0" - 61’ 5H U 21

I H 22 I

651 on 66 1 5" U 23

0 24 U HUH H II H:I

70’ ON - 71’ 5" U 25

72’ 64l D 26

- 76’ 5I V 27 I

76’ 5" of

Page 3 I Borehole TQ38SW12331E I Borehole Logs Page 2 of 2

http://scans.bgs.ac.uk/sobi_scans/boreholeS/ 1065052/images/i 2530533 .html 21/08/2012

Page 2 I Borehole TQ38SW12331F I Borehole Logs Page 2 of 2

- .. . ........ ....... . . fl . - .- ,. -

at s

Of

XItIO VILL1A1 UT Y&VL1VS Nrlk 132813

Location LONDON LRUOX Borehole Dia sit ana 6"

Contract N. : Cf69fLO45 Casing : : :

Type Of Boring SzU and Age* Ground Level Date (started) 8.I2,191;2

rFIL 3I:l3 of 2

� Dept} Water SAMPLES STRATA DESCRIPTION OF STRATA

of casing Level Depth Type No. Legend Depth Thickness

Of 00

5O 1

13’ 6e KADE (ROM ’ Gft D 2 (Si&thtone pooient 1 hard,ort fill)

chau pies tiber,e1. :II

�100’.. (11. 34) . . . .

4 13t6i1

- 15Qfl . B

(N-23)

171, 6R D 6

20f Off B 7 (i25)

22* ’ D a 18 " P1ao Y*ry eilti ccaro madium fl*a QRAVL with iott 1104des of iUt fivaes of sandstona t oc&310Da1. bita of briok at& odd bose.

25f ON B 9 {u-27)

i:. LUr

27 1 6 11 B 310 3c

3DI On D (N..2)

31’9 32t 619 D 12 Stiff dark p.’ oruLa SILT with

cs0 idy gravel toclueici. 1:1 III

N 13 °’1 5’D" - 3 " Deus black coarse medims fine

anul*.r svjidy GR.NEL

7’ 6" B 14 ’ 37 f 1O’ Stiff to e13’ stiff giey silt;

40 D

Water s&epaa observed thro* the cnsin joints

http://scans.bgs.ac.uk/sobi_scans/boreholes/1 065053/images/i 25305 34.html 21/08/2012


RECO R D OF 60REHOLE-0ot�, KiflO WIL1=4 STRtZT VAULTS

Location : i.crooi mmE Borehole Dia ell" 6’

811 to 45 1 oft Contract No. : Casing : 55 , 04

Type of Boring SJ11 sod jwr Ground Level

Date (started) 0.12.1972

- 20f 2

Depth - Water - SAMPLES STRATA DESCRIPTION OF STRATA

Casing Level Dpt4 Typo No. Legend Depth Thickness

40 1 DO � 41 1 54 U 15 40 0"

42’6" 0 16 WI JI . I

45’ 0" -. 46’ 4" 11 37

47 1 6 111 0 lB

50’ 0" � 511 In 39 1 C1I:Ip* -III nI -!uIu

52 0 6w 0 20 ¶;;r

’0 4’O" 55’0".%’4 r 12.7 I 0 1 0 II

7’b0 IIW IILiW-

sttrr to C!AT very jttf grey iilty

57’6" 0 22

60’0".63’4" 7 23

0 24 II U

65’ 0 � £6’ 4" U 25 -

67 1 6"’ V 26

ill !!I III -:rI:I :Ii:WI1!:!IjJI: !

7000 -71 1 5" 0 27

72t 6m D 28

" 7’ 4 10 9

7" 4. - lad of borho1e

S. ILl ;ccloJrIuuIW WiLl -: II...:ISIJr.–j Water steMen observed through the cig joints

- Water iaplC tAke*

cnnor Ltd

http ://scans.bgs.ac.uk!sobi_scans/boreholes/1 065053/images/i 2530535 .html 21/08/2012


( 3%I4.. gO 10,1BOREHOLE LOG K

T 3 B ON .JCN)CtI iiUDGE.

PRIEDOUT FOR Iay :J Anderson, Cosult rrireer.

.EI1OL No. DIAMETER: in. air.. sknd Lin.

� - � DATE 3rd - cth June, 3.9.

- - 2td - .th July,

� DESCFUPTONOF STRATA Sample, LEGND DEPTH if

-

r. -

H H H

�� .

_ I

- -

: � d ________

- t3’e’1t$ -

:

N. REINFORCEMENTS LTD. SCALE: 1 in. 0

� = CSTUREDSA,PLE cHANICS LABORTORY . �., - I NpTYRBD SAMPLE

’fl’W � - J� ttIW (’* �...r -

http://seans. bgs.ac.uk/sobi_scans/boreholes/1 06443 6/images/i 2529618 .html 21/08/2012

27

� DISTURBED SAMPLE

E uroisTu8ED SAMPLE.


-’

3.gO1 BOREHOLE LOG

OCA1I0N .12CO. LCDC BidDG. TO 3 S $

CARRiED OUT FOR Eezers. t", iai and ndron Consulting krigteer.

WREPOLE No.fi cnd. DIAMETER: 9th. and

DATES 23rd - 2�th Jur.e., 1964 .

NESS DEPTH THICK i,

.’ - .-..

L.L..

,.L to te"V (4r..C’ MiXe’01

..r..) aria mixed flit and LLL.K 11 few LCL1.3

cx rit1e and pot trees 3 ....

..!.? mixed greir brown �a: 3

. !"i:ed flint (ir(L.

.: reyish brown 1arr.ated .1. 7 - I

- ’L)

z8

rey ôrr l;inrited I --

.L)

"9

i 27

few I 12 .ite tr.ic.

16 it

c SALE: I in. to

REINFORCEMENTS LTD. .. "ECHANICS LABORATORY

http://scans. bgs. ac.uk,’sobi scans/boreholes/i 06443 6/images/i 252961 9.html 21/08/2012


- FIG. 3.

eA ASH . . ’BOREHOLE LOG T

LOCATION Z.f:.12C0. LC:WCN 3ID41.

CARRIED OUT FOR lessrs. Vott 1 Hay and ..nierson, Consulting? ngineers.

f BOREHOLE No. ir-r DIAMETER: 9’., Pin. and

DATE: 23rd - 3th Jut

DESCRIPTION OF STRATA 6amPIJi LEGEND t o::r: NESS

19 ei --

J 6rey brown 1ar.in’ted Lty Li 1 $ore tJrt 1 4 t

n SILT partings And pockets. " 15’G’

23

22 23 59 2

23 � -

22

Mci

� H---’

LU grey laminated silty (;L,Y. lC" pE’net Sated.

26 -_-I 27

22 K. 23 25

I) CF

was 1eci o .,.; tbes at .4:....in. e1o’.. ta :ev1. I jurjr’ rorit’ to t:e w&t.r I-tl verjd b. lLft. fr. :Li :cL st, - level,. ci t.ae of t.e tie.

EJNORCEMENTS LTD. SCALE to

G DISTURBED SAMPLE

ECHANICS LABORATORY

I UNDISTURBED SAMPLE

http://scans. bgs. ac.uk/sobi scans/boreholes/ 106443 6/images! 1 2529620.html 21/08/2012

Documents

BSCU Appendix 14.1 Geotechnical Baseline Report