GROUND INVESTIGATION REPORT -...

GROUND INVESTIGATION REPORT

LAND ADJACENT TO REDDITCH ROAD

DOCUMENT VERIFICATION

1 Lancaster Circus

Birmingham B4 7DG

Tel 0121 303 6967

Project Number 72765 File Reference 54696

Revision Date Status Prepared by Checked by Approved by

0000 September 2011 Final RJM

2

Our Ref: 72765/54696 Your Ref:

Birmingham City Council Housing Regeneration and Development Team Homes and Neighbourhoods Directive 44 Newhall Street Birmingham B3 3PL

September 2011 For the attention of Bali Paddock

GROUND INVESTIGATION REPORT LAND ADJACENT TO REDDITCH ROAD

CONTENTS Executive Summary 1.0 Introduction 1.1 Authorisation 1.2 Aims and Objectives 1.3 Scope of Work

2.0 Desk Study 2.1 Overview

3.0 Intrusive Investigation 3.1 Field Investigation 3.2 Encountered Conditions 3.3 In-situ testing

3.4 Laboratory Testing 4.0 Evaluation and Interpretation of Recovered Data 4.1 In-situ Testing 4.2 Laboratory Test Results

5.0 Remediation 5.1 Options Appraisal 5.2 Health and Safety

ENCLOSURES 1.0 Site Investigation Data 1a Exploratory Hole Location Plan 1b Borehole Logsheets 1c Trial Pit Logsheets 1d Key to Symbols and Disposal of Samples 1e Results of In-situ Gas Testing 1f Laboratory Test Results

GROUND INVESTIGATION REPORT - LAND ADJACENT TO REDDITCH ROAD

054696 September 2011 Revision 0000 3 Draft Issue

EXECUTIVE SUMMARY A previous desk top study of the area had identified that prefabricated housing was

once present, fronting onto Redditch Road. A depression in the ground was also

identified in the area. This feature contained a pond and was infilled in the 1960s when

the “prefabs” were demolished. Land was redeveloped with low rise residential

properties and areas of Public Open Space. The type of prefabricated structure was not

known and it had been concluded that there was a potential risk for there to be

asbestos or asbestos containing material caused by demolition of the “prefabs”.

The current investigation has shown up to 5.0m of made ground at the deepest point of

infilling found within the former depression/pond area. Materials used in backfilling this

feature included disturbed natural ground and demolition waste (mainly brick and

concrete). In some instances the ground was voided or very loose beneath a relatively

solid crust, suggesting that the materials had been poorly compacted and/or settlement

had occurred.

Tests have shown no evidence of generation of high levels of ground gases in this

infilled area. Carbon dioxide levels in the ground have on one occasion exceeded long

term Occupational Exposure Levels. This gas was at a concentration that is frequently

recorded in natural soils, with the implication being that should there ever be excavation

in this area then tests for hazardous gases would have to be carried out before entry

into confined space below ground level (this is being standard procedure).

Elsewhere made ground was also found on land on and near to where there had been

prefabricated houses. This comprised compact disturbed natural ground with some

demolition waste.

There was no visual evidence of asbestos or asbestos containing materials during

drilling of boreholes and excavation of trial pits. Examination of soil samples under a

microscope showed a very small amount of brown asbestos fibre at once location and

white asbestos fibre at another. Further more detailed analysis was carried out and has

confirmed that the amount of asbestos present was below that where there would be a



risk of generating a significant amount of airborne fibres should the ground be

disturbed. These results indicate that the prefabricated structures that were demolished

were not the type that contained a high amount of asbestos.

Tests for chemical contamination in both the former depression and “prefab” area

showed levels that would not warrant and remediation for current end use or a less

sensitive future use. The levels of contamination would require reassessment should

there ever be a change to a more sensitive end use such as housing, as there may be

a need to incorporate basic remedial measures such as using a soil cover in garden

areas.



1.0 INTRODUCTION

1.1 AUTHORISATION

The investigation was requested by the Housing Regeneration and Development

Team, part of Birmingham City Council’s (herein referred to as BCC’s) Homes

and Neighbourhoods Directive.

1.2 AIMS AND OBJECTIVES

The main aim of the investigation was to investigate the potential for

contamination to be present that was associated with the demolition of the

prefabricated houses and the infilling of a depression that includes a pond.

The Ordnance Survey Grid Reference for the site is E.404280, N.277930.

1.3 SCOPE OF WORK

The current investigation has included the following elements:

Desk Study

• An overview of a previous report that was a summary of ground conditions

in the area.

Geoenvironmental Investigation

• The excavation of hand dug trail pits on and near the line of former

prefabricated housing.

• The sinking of boreholes to investigate the materials use to infill the

former depression/pond.

• In-situ testing involving the measurement of ground gases accumulating in

monitoring standpipes installed in the former depression/pond.



• Sampling exercise to recover materials for inspection and laboratory

testing.

• Targeted laboratory chemical testing

• Factual and interpretive Reporting.

• Consideration of Remedial Measures

• Consider Health and Safety Measures for existing and future users of the

land.

2.0 DESK STUDY

2.1 Overview

Reference is made to a previous report produced by Urban Design for the

existing client entitled “Summary of Existing Ground Conditions” Ref

SI/11/054680, dated April 2011:

This identified the presence of prefabricated housing adjacent to Redditch Road,

built by 1947 and demolished by 1965. Records held by BCC’s Environmental

Protection Unit indicated the presence of a potential landfill nearby. Scrutiny of

available mapping showed that this position was incorrectly plotted and that it

should have related to a former depression in the ground with a pond that was

shown on early OS maps. These features were infilled when the land was

redeveloped in the 1960s. Flats that are currently at 210 and 220 Redditch Road

were shown as being built near or over the edge of this feature.

Potential contamination indentified in this earlier report was demolition waste and

unknown materials used to infill the depression. This included asbestos or

asbestos containing materials from demolition of prefabricated houses.

There was also a potential for generation of landfill-type gases if degradable

material was present in the former pond/depression (including pond sediment).

A previous investigation had included a borehole in the former pond showing

3.7m of demolition waste. However the depth and extent of infilling and the full



nature of materials present was unproven. In addition no ground gas testing had

been carried out.

3.0 INTRUSIVE INVESTIGATION

3.1 Field Investigation

The site works for the current investigation was carried out on the 22nd

June

2011 and comprised 4 window sample boreholes in the area of the former

pond/depression and 6 hand excavated trial pits on and near the line of the

former prefabricated houses. The positions of the exploratory holes are shown

on the enclosed plan (enc 1a).

The strata encountered were logged by the site engineer. The recovered

information forms the basis of the borehole log sheets and records that are

presented in enclosures of this report (enc 1b and 1c). A key to symbols and

information on disposal of samples is present in enclosure 1d.

Representative samples of soils were recovered for further examination and

laboratory testing, as deemed necessary.

3.2 Encountered Conditions

Boreholes showed a thin layer of topsoil with up to 5.0m of made ground in the

infilled depression/pond area, comprising disturbed natural ground with some

demolition waste (mainly brick and concrete).

Two boreholes in the deepest area of infilling showed evidence of voids or

extremely loosely compacted material within the made ground. In WS1 this was

from 3.0-4.0m and in WS3 this was from 2.0-2.8m and 3.0-4.8m.

Beneath the fill materials natural ground comprised stiff clay or hard mudstone.



Groundwater was only encountered in one borehole (WS1) at 3.5m. A ground

gas monitoring standpipe was installed at this location.

Hand dug trial pits on the line of and adjacent to the former prefabricated houses

also showed nominal depths of topsoil. Made ground was encountered at all

locations to the base of the excavations, comprising disturbed natural ground,

sand, bricks (including layers of whole brick), varying amounts of clayey silt and

occasional glass and wood. At one location (TPC) sandy ash was also present in

the made ground from 0.15-0.48m.

Although it had bee planned to excavate boreholes to a depth of 1m, the ground

was extremely compact and all but one hand excavated trial pit had to be

abandoned before the predetermined depth due to the hard strata.

Groundwater was not encountered during hand digging.

3.3 In-situ Gas Testing

The standpipe installed on the site has been monitored on two occasions.

The first visit was carried out approximately two weeks after installation during a

high pressure period. As emission of ground gases is likely to be greater during

low or rapidly falling atmospheric pressure the second reading was delayed until

the atmospheric pressure was falling and below 1000mb. This event occurred

on 12th

September 2011, when a storm caused by the tail end of Hurricane Katia

crossed the UK.

Results of in-situ gas testing are present in the enclosure to this report (enc 1e)

3.4 Laboratory Testing

Asbestos identification was carried out on samples deemed to be representative of

the strata present.



Samples were also submitted for a range of tests to include the potential chemical

contaminants associated with demolition waste and ash.

Results of laboratory testing as presented in enclosure 1f to this report.

4.0 Evaluation and Interpretation of Recovered Data

Old maps show that prefabricated houses were once present on land adjacent to

the Redditch Road. It is not known what type of “prefabs” these were, and the

concern was that they might have been those that contained a significant amount

of asbestos, with contaminated arising from their demolition.

Early OS maps also showed the presence of a depression in the ground with an

associated pond that was infilled around the time of demolition of the “prefabs”. It

was expected that the greatest depth of made ground would be present where the

pond was located in the depression and this has been confirmed by the current

investigation, with up to 5.0m of fill materials being recorded.

The materials used to backfill the former depression/pond comprise a mixture of

disturbed natural ground with some demolition waste and there is evidence that

they were poorly compacted as voids/very loose material are present below a solid

crust at some locations. The properties at 220 Redditch Road may have been built

over the edge of the infilled ground and whilst limited investigation was carried out

in this area before the flats were built, it is not known whether the foundation

design allowed for this.

Elsewhere had dug trial pits have also shown the presence of demolition waste

intermixed with disturbed natural ground. There was no visual evidence of

significant amounts of asbestos or asbestos containing materials during site works

for the current investigation.



4.1 In-situ Test Results

Tests carried out in the infilled depression/ponds area included the

measurement of methane and carbon dioxide levels in a monitoring standpipe

(these are gases produced by anaerobic degradation).

No measurable levels of methane were recorded on either occasion and the

highest level of carbon dioxide was 1.4%.

Measurement of oxygen concentrations showed the lowest level to be 18.8%.

No significant pressures and flow rates were recorded from gases accumulating

in the borehole.

These results include measurements taken under “worse-case” conditions when

the atmospheric was low and rapidly falling.

It is concluded that materials encountered in the former depression/pond area do

not have the potential to produce significant amounts of landfill–type gases.

4.2 Laboratory Test Results

Samples deemed representative of ground conditions were screened by stereo

microscopic examination prior to sample preparation and chemical analysis.

This examination was more detailed than field observations a showed suspect

loose fibre(s) in two samples.

In the sample from Trial Pit A amosite (brown asbestos) was identified as loose

fibre(s) in the soil matrix.

In the sample from Trial Pit C chrysotile (white asbestos) was identified as loose

fibre(s) in the soil matrix.



The type of examination carried out is a qualitative test, in so much as suspect

material is identified. It does not give an indication of how the soil would be

classified if it contained asbestos (e.g. if it were hazardous waste) or the relative

risk depending on how much asbestos was present.

The results prompted further specialised analysis with samples where asbestos

was identified sent off for quantification using a technique called Phase Contrast

Optical Microscopy (PCOM). Results of this additional testing showed the

asbestos to be present in both samples at concentrations of less than 0.001%w/w.

This shows asbestos is below the World Health Organisation limit at which

airborne concentrations of asbestos fibres would reach or exceed 0.1fibres/millitre

of air (ref WHO TM/88/14). The risk from asbestos would therefore be considered

as low. These results indicate that the prefabricated structures that were

demolished were not the type that contained a high amount of asbestos.

Other tests for chemical contamination have been assessed with reference to WS

Atkins ATRISKSOIL

Soil Screening Values (SSVs) and Environment Agency Soil

Guideline Values (SVGs) for long-term human health risk.

Birmingham City Council as a subscriber to www.atrisksoil.co.uk has access to

the full set of SSVs. However, strict copyright laws control reproduction of these

values. Tables of values of SSVs are therefore not reproduced in this report to

avoid unrestricted copying but are available for inspection if required.

The Environment Agency SVGs have been withdrawn but it is noted that many

organisations including WS Atkins and Local Authorities such as BCC still

consider certain SGVs to offer the most appropriate guideline value for soil

contamination.

In this instance the screening values for Public Open Spaces are considered the

most applicable.



Laboratory testing has shown no significant levels of chemical contamination.

5.0 Remediation

5.1 Options Appraisal

The main aim of the investigation was to investigate potential contamination at

the site.

In this instance although asbestos was detected in two samples the levels are so

low as to not be considered a risk from air borne fibres. Low levels of chemical

contamination or ground gases have been detected and specific remediation is

not considered necessary whilst the land remains in use as public open space.

Should future use change then it will be necessary to re-evaluate findings. For a

more sensitive land use, such as gardens for residential use, the levels of

chemical contamination might warrant measures such as the use of a clean soil

cover. For less sensitive uses (e.g. commercial or hard cover) then no specific

remediation would be necessary.

The presence of poorly compacted/voided material in the former pond area may

require some form of ground improvement (e.g. excavation and re-compaction)

should there be a change of use; particularly should there be an increase in

loading over the former pond area.

If it is intended to keep existing properties at 220 Redditch Road then they

should be inspected for structural damage, as they appear to be built on the

edge of the infilled area and are potentially susceptible to differential settlement.

5.2 Health and Safety

The levels of asbestos where discrete fibres were encountered were below that

where a significant amount of airborne fibres could be released if the ground



were disturbed. However, as it is not possible to test every bit of ground it is

recommended that dust suppression be used if there was ever any

redevelopment that included ground works, in case there was very localised

asbestos contamination.

No specific measures would be considered necessary to protect site workers

from chemical contamination other than standard clean working practices being

adopted which includes the provision of PPE (e.g. gloves) and welfare facilities.

The levels of carbon dioxide recorded in the monitoring borehole were on one

occasion above Occupational Exposure Levels for long term exposure. Should

there ever be excavation in the area then no confined space should be entered

below ground level until the atmosphere is proven safe.



ENCLOSURE 1.0

Site Investigation Data

1a Exploratory Hole Location Plan

1b Borehole Logsheets

1c Trial Pit Logsheets

1d Key to Symbols and Disposal of Samples

1e Results of In-situ Gas Testing

1f Laboratory Test Results

Shelter

25

REDDIT

CH R

OAD

TE

RN

GR

OV

E

RED

DIT

CH R

OAD

11

18

1

10

23

22

11

23

32

36

38

30

WA

NS

BE

CK

GR

OV

E

161.5m

LB

15

14

28

24

34

12

33

20

26

2

195

180

12

El Sub Sta

25

15

174

4

40

41

DRIVEGROVEWOOD

Surgery

33

44

5

38

1115

69

GROVEWOOD DRIVE

16

19

12

1

10

1814

9

BURFORD PARK ROAD

17

23

43

GR

OVE

WO

OD

DR

IVE

CROFTW

HITEBEAM

WH

ITE

BEA

M

31

42

46

52

11

23

15

MULLION CROFT

30

Coleman Court

74

1

2

31

42

165.8m

35

18

GR

OV

E

26

27

4

CR

OFT

41

230

26

Grange

37

11

26

15

1

11

40

Sta

19

23

23

15

12

2

15

11

8

11

14 31

59

14

21

6

26

3

10

28

27

38

200

37

50

14

210

15

26

Sub

3323

18

35

38

39

24

40

29

21

6

11

15

26

1

36

1

Norton

2

17

220

30

47

15

37

24

2

29

1

El

15

10

10

11

21

14

24

15

G

BU

RFO

RD

PAR

K R

OAD

TE

RN

WA

NS

BE

CK

GR

OV

E

BEECH HURST

FO

RTH

GR

OVE

DEE G

RO

VE

REDDITCH R

OAD

VY

RN

WY

GR

OV

E

TCB

Shelter

172.2m

172.8m

WS1WS2

WS3

WS4

TPA

TPB

TPC

TPD

TPE

TPF

IRL Site Investigation1 Lancaster Circus Birmingham B4 7DG

Tel 0121 303 6967Fax 0121 303 7501

Project

Date Engineer

Land Adjacent To

Redditch Road

7 2 9 1 6 / 5 4 6 9 2

July 2011 DPL

EXPLORATORY HOLE LOCATION PLANMap based on 2007 Landline & Mastermap data

Drawn

Enc.No. UD/ IRL No.

IK-LJ

1a

T

Title

This map is based on Ordnance Survey Material with the permission of Ordnance Survey on behalf of the Controller of Her Majesty's Stationary Office © Crown Copyright. Unauthorised reproduction infringes Crown Copyright and may lead to prosecution or civil proceedings.B.C.C. Licence No. 100021326 (2009).

Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Window Sample Borehole (WS)Legend

ID ref Easting

54692 WS1 404,241

54692 WS2 404,247

54692 WS3 404,237

54692 WS4 404,232

54692 TPA 404,243

54692 TPB 404,279

54692 TPC 404,308

54692 TPD 404,342

54692 TPE 404,280

54692 TPF 404,365

Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)Trial Pit (TP)210

38

220

WS1

WS2

WS3

WS4

TPA

Scale 1:1250

Scale NTS

Description

Logged By:

Boring Method:

Driller:

Client:

Project No:

Site:

Type No Test Results

Strata Details

Legend

Samples & In-Situ Tests

Depth

General Remarks:

Ground Level:

Co-ords:

Dates:

Elevation

1 Lancaster Circus Birmingham B4 7DG

Tel 0121 303 6967 Fax 0121 303 7501

Well/Waterstrikes

Job No:

Depth(Thickness)Date & Casing

Boring

Casing

Depth DiameterPlant: Diameters

Chiselling

From To Time RemarksHand Dug Inspection pit to 1.2m.1.2. Groundwater encountered at 3.5m. .

72916

Homes and Neighbourhoods Directorate

Land Adjacent to Redditch Road

54675 JT

Compact Premier Tracker

22/06/2011

DL

Window Sampler

404241E - 277851N

-

Record of Borehole WS1

0.00-0.050.05-0.70

0.70-0.90

1.20-2.00

4.00-4.90

D 1D 2

D 3

D 4

D 5

0.05

(0.65)

0.70

0.90

(2.10)

3.00

(1.00)

4.00

(0.90)

4.90

5.00

TOPSOIL

MADE GROUND - Dense brown sand, somebrick and fine to coarse subrounded quartzitegravel

MADE GROUND - Dense black ashy sand. somecrushed gravel (Type 1 road stone).

MADE GROUND - Soft orange brown and greyclay.

No Recovery (VOID)

MADE GROUND - Soft brown silty clay(possible natural ground).

MUDSTONE - Hard red brown MUDSTONE

End of Borehole at 5.00 m

Sheet 1 of 1

Description

Logged By:

Boring Method:

Driller:

Client:

Project No:

Site:


Strata Details

Legend


Depth

General Remarks:

Ground Level:

Co-ords:

Dates:

Elevation


Tel 0121 303 6967 Fax 0121 303 7501

Well/Waterstrikes

Job No:


Boring

Casing


Chiselling

From To Time RemarksHand Dug Inspection Pit to 1.2m.1.2. Groundwater not encountered.

72916



54675 LT


22/06/2011

DL

Window Sampler

404247E - 277855N

-


0.00-0.050.05-0.50

0.50-1.20

1.20-3.00

D 1D 2

D 3

D 4

0.05

(0.45)

0.50

(0.70)

1.20

(1.80)

3.00

TOPSOIL

MADE GROUND - Dense brown sand, somebrick, fine to coarse subangular gravel,broken brick and concrete fragments.

MADE GROUND - medium dense dark brownclayey sand, some fine to coarsesubangular to sub rounded quartzite graveland brick fragments.

Stiff red brown friable CLAY


Sheet 1 of 1

Description

Logged By:

Boring Method:

Driller:

Client:

Project No:

Site:


Strata Details

Legend


Depth

General Remarks:

Ground Level:

Co-ords:

Dates:

Elevation


Tel 0121 303 6967 Fax 0121 303 7501

Well/Waterstrikes

Job No:


Boring

Casing


Chiselling

From To Time RemarksHand dug inspection pit to 1.2m.!.2. Groundwater not encountered.3. Monitoring pipe installed to 3.0m.

72916



54675 JT


22/06/2011

DL

Window Sampler

404237E - 277846N

-


0.50-2.00

2.80-3.00

4.80-5.00

5.00-5.10

D 1

D 2

D 3

D 4

0.05

(0.45)

0.50

(1.50)

2.00

(0.80)

2.80

3.00

(1.80)

4.80

5.00

5.10

TOPSOIL

MADE GROUND - Coarse gravel (Type 1 roadstone).

MADE GROUND - firm red brown clay, somebroken brick and concrete (Poor recovery).

No recovery (VOID)

MADE GROUND - Grey siltt (Poor recovery).

No recovery (VOID)

MADE GROUND - soft to firm red brownsiltyclay, some brick fragments.

Stiff red brown CLAY


Sheet 1 of 1

Description

Logged By:

Boring Method:

Driller:

Client:

Project No:

Site:


Strata Details

Legend


Depth

General Remarks:

Ground Level:

Co-ords:

Dates:

Elevation


Tel 0121 303 6967 Fax 0121 303 7501

Well/Waterstrikes

Job No:


Boring

Casing


Chiselling

From To Time RemarksHand dug inspection pit to 1.2m.1.2. Groundwater not encountered.3. Monitoring standpipe installed to 5m.

72916



54675

Compact Premeier Tracker

22/06/2011

Window Sampler

404232E - 277839N

-


0.10-0.50

0.90-1.20

D 1

D 2

0.05

(0.65)

0.70

0.90

(0.80)

1.70

(1.20)

2.90

(2.10)

5.00

TOPSOIL

MADE GROUND - Firm red brown clay, somebrick fragments and fine to coarse subangular to sub rounded gravel.

MADE GROUND - Black ash

MADE GROUND - Firm red brown clay, somebrick fragments and fine to coarse subangular to sub rounded gravel.

Firm red brown and grey CLAY (Possiblydisturbed).

Firm grey CLAY become stiff with depth.


Sheet 1 of 1

Project No. 72916

Job Tiltle Land Adjacent to Redditch Road

Site works undertaken - 23.07.11

TP ref Top of Strata (m) Base of Strata (m) Description Sample Ref and Depth (m)

A GL 0.05 MADE GROUND - Topsoil

0.05 0.15

MADE GROUND - Red brown friable silty clay, with gravel, coal and brick

fragments. D1 0.15 - 0.45

0.15 0.3

MADE GROUND - Red brown friable silty clay, with gravel, coal and brick

fragments.

0.3 0.4 MADE GROUND - Whole bricks

0.4 0.45 MADE GROUND - Red brown friable silty clay

0.45 0.55+

MADE GROUND - Hard red brown friable clay, occasional coal, gravel and

brick fragments.

Note Trial pit A abandoned due to hard strata

B GL 0.05 MADE GROUND - Topsoil

0.05 0.15 MADE GROUND - Red brown friable clayey silt D1 0.15 - 0.45

0.15 0.45

MADE GROUND - Brown silty clay, occassional gravel, glass and brick

fragments.

0.45 0.55 MADE GROUND - Whole bricks

0.55 0.75 MADE GROUND -Soft brown clay, occasinal brick and gravel

0.75 1.0+ Stiff to hard red brown CLAY (possibly disturbed)

C GL 0.05 MADE GROUND - Topsoil

0.05 0.15 MADE GROUND - Red brown friable clayey silt D1 0.15 - 0.48

0.15 0.48

MADE GROUND - Grey clay, some black sandy ash, wood fragments and

gravel.

0.48 0.7+

MADE GROUND - Hard brown silty clay, occasional brick, ash and timber.

Note Trial pit C abandoned due to hard strata

D GL 0.05 MADE GROUND - Topsoil

0.05 0.1 MADE GROUND - Red brown clayey silt D1 0.10 - 0.55

0.1 0.25

MADE GROUND - Red brown clayey silt, much gravel, brick and coal

fragments.

0.25 0.35

MADE GROUND - Brown clayey silt, occasional gravel, brick and

concrete.

0.35 0.55

MADE GROUND - Dark grey brown sand, some brown clayey silt,

occasional gravel and brick fragments. brown friable silty clay

0.55 0.95+

MADE GROUND - Brown clayey silt, much brick, gravel and concrete

gragments.

E GL 0.05 MADE GROUND - Topsoil

0.05 0.5

MADE GROUND - Dark brown friable sand some whole brick and broken

brick fragments. D1 0.15 - 0.45

0.5 0.75+ MADE GROUND - Whole bricks

Note Trial pit E abandoned due to hard strata

F GL 0.05 MADE GROUND - Topsoil

0.05 0.19

MADE GROUND - Brown silty sand, some gravel, brick, concrete and

glass fragments D1 0.05 - 0.5

0.19 0.3 MADE GROUND - Concrete and brick

0.3 0.5 MADE GROUND - Red silty sand, some brick fragments.

0.5 0.8 MADE GROUND - Red brown friable clay, some brick fragments

0.8 0.9+ Hard red brown friable CLAY (possibly disturbed)

Record of Hand Dug Trial Pits

Enclosure 1d

URBAN DESIGN IRL SITE INVESTIGATION

KEY TO SYMBOLS IN BOREHOLE LOGS

S Standard penetration test using a standard, split spoon sampler C Standard penetration test using a solid steel cone because of the

presence of gravel or obstructions N The SPT ‘N Value’ is the number of standard blows required to drive the

tool for 300mm after an initial penetration of 150mm (seating blows). The test is normally terminated after a total of 50 blows, including the seating blows, when 50+ or >50 is recorded in the appropriate column of the borelog, together with details of the actual distance penetrated recorded in the Remarks section e.g. ‘50 for 35mm’.

U A so called ‘undisturbed’ sample, more correctly designated as a ‘tube sample’. These are normally of 100mm nominal bore. The tube is usually driven into the ground unless otherwise stated. Where there was no recovery this is usually indicated by NR in the adjacent column. The cohesion is recorded in this column to one decimal place. Where the angle of shearing resistance exceeds zero this figure is shown in brackets following the cohesion.

B Bulk disturbed sample D or J Small disturbed or jar sample W Water sample V Vane Test P N value computed from dynamics in window sampling borehole. This

value for guidance only at present Casing Depth Water Strike Standing Water Level Legend The symbols used are essentially those designated in BS 5930:1999,

although, for clarity, only the symbol for the predominant material is used on occasions

DISPOSAL OF SAMPLES

The samples recovered in this investigation will remain in our laboratory for two weeks after the issue of this report. The client must therefore direct us immediately if he wishes the samples to be retained for a longer period, for which a storage charge will be made. Alternatively the client can collect the samples from our laboratory, by appointment, for storage.

COPYRIGHT

The information in this report belongs to the client defined in the Introduction. The copyright, however, remains vested with the authors.

Results of In-situ Ground Gas Testing

72699 - 547 Holly Lane

Note

CO2 = Carbon Dioxide

CH4 = Methane

O2 = Oxygen

Site: Land Adjacent to Redditch Road Note:

Ref:72765/54696 CO2 = Carbon Dioxide

CH4 = Methane

O2 = Oxygen

Date: 07.07.2011

Atmospheric Pressure: 1013mb steady

Weather Conditions: Dry, Overcast

Ground Conditions: Dry

Peak Steady Peak Steady

WS1 0.00 0.00 0.40 0.40 <0.1 <0.1 20.20 5.00 3.80

Date: 12.09.2011

Atmospheric Pressure: 990mb (falling rapidly)

Weather Conditions: Showers, high windsGround Conditions: Damp

Peak Steady Peak Steady

WS1 0.10 0.00 1.40 1.30 <0.1 <0.1 18.80 5.00 3.90

NotesCH4 (% vol)

Water Level

(m)

Clear

Depth (m)

Pressure

(Pascals)

Flow

(Litre/hr)

CO2 (% vol)

Pressure

(Pascals)

Flow

(Litre/hr)

RESULTS OF IN-SITU GAS TESTING

Location

Reference

Location

Reference

CH4 (% vol)CO2 (% vol) O2

(% vol)

Water Level

(m)

Clear

Depth (m)

O2

(% vol)

Notes

Severn Trent Services Analytical Services is a trading name of Severn Trent Laboratories Limited. This communication has been sent to you by Severn Trent Laboratories Ltd. Registered in England and Wales. Registration No.2148934. Registered Office: Severn Trent Centre, 2 St. John's Street, Coventry, CV1 2LZ

18 July 2011

Test Report: COV/789279/2011

Dear Mr Manders

Analysis of your sample(s) submitted on 04 July 2011 is now complete and we have pleasure in enclosing the appropriate test report(s).

Name:

Yours Sincerely,

Title:

Signed:

L. Ellis

Inorganics Operations Manager

Mr Manders Birmingham City Council Urban Design 1 Lancaster Circus Birmingham B4 7DG West Midlands

Should you have any queries regarding this report(s) or any part of our service, please contact Customer Services on +44 (0)24 7642 1213 who will be happy to discuss your requirements. If you would like to arrange any further analysis, please contact Customer Services. To arrange container delivery or sample collection, please call the Couriers Department directly on 024 7685 6562. Thank you for using Severn Trent Services and we look forward to receiving your next samples.

An invoice for the analysis carried out will be sent under separate cover.

Torrington Avenue, Coventry, CV4 9GU T: +44 (0)24 7642 1213 F: +44 (0)24 7685 6575 www.stsanalytical.com

Analytical Services

Severn Trent ServicesAnalytical Services, Torrington Avenue, Coventry, CV4 9GU

Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Number of Test Results

Job Location:

Standard Suites

Number of Samples

04 July 2011

included in this reportJob Received:

150

04 July 2011

included in this report

8

Job Description:

72916 Adjacent to Redditch Rd

Analysis Commenced:

Signed:Name:

Title:

Date:L. Ellis


18 July 2011

Report Number: COV/789279/2011 Issue 1

Mr Bob Manders Birmingham City Council Urban Design 1 Lancaster Circus Birmingham West Midlands B4 7DG

Report Summary

Date of Issue: 18 July 2011

1314 1229 0897 4409

Information on the methods of analysis and performance characteristics are available on request. Opinions and interpretations expressed herein are outside the scope of UKAS accreditation. The results relate only to the items tested. Tests marked 'Not UKAS Accredited' in this Report/Certificate are not included in the UKAS Accreditation Schedule for our laboratory.

Severn Trent Services Analytical Services is a trading name of Severn Trent Laboratories Limited. This communication has been sent to you by Severn Trent Laboratories Limited. Registered in England and Wales. Registration No. 2148934. Registered Office: Severn Trent Centre, 2 St. John's Street, Coventry, CV1 2LZ (c) Severn Trent Services 2011. All rights reserved. We, Severn Trent Laboratories Limited, are the owner of all copyright in this report. You must not copy, reproduce, amend or adapt this report, its contents or any format in which it is delivered without our prior written agreement. If you copy, reproduce, amend, or adapt this report in any way without our agreement you will be liable for any damage or loss to us. In the event of a dispute the copy of the report held by us shall be the reference copy.

Severn Trent Services was not responsible for sampling unless otherwise stated. Sampling is not covered by our UKAS accreditation.

Page 1 of 13


Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Pyrene 1.3 mg/kg Y Cov 307

Fluoranthene 1.4 mg/kg Y Cov 307

Chrysene 0.71 mg/kg Y Cov 307

Benzo(a)anthracene 0.74 mg/kg Y Cov 307

Anthracene 0.23 mg/kg Y Cov 307

Acenaphthene <0.10 mg/kg Y Cov 307

Acenaphthylene <0.10 mg/kg Y Cov 307

Phenanthrene 0.46 mg/kg Y Cov 307

Fluorene <0.10 mg/kg Y Cov 307

Benzo(g,h,i)perylene 0.74 mg/kg Y Cov 307

Benzo(k)fluoranthene 0.44 mg/kg Y Cov 307

Benzo(b)fluoranthene 0.81 mg/kg Y Cov 307

Dibenz(a,h)anthracene <0.10 mg/kg Y Cov 307

Benzo(a)pyrene 0.89 mg/kg Y Cov 307

Lead as Pb, dry weight 69 mg/kg Y Cov 30

Copper as Cu, dry weight 79 mg/kg Y Cov 30

Nickel as Ni, dry weight 31 mg/kg Y Cov 30

Mercury as Hg, dry weight <0.35 mg/kg Y Cov 30C

Cadmium as Cd, dry weight 2.9 mg/kg Y Cov 30

Arsenic as As, dry weight 22 mg/kg Y Cov 30/30C

Chromium as Cr, dry weight 30 mg/kg Y Cov 30

Hexavalent Chromium as dw 0.28 mg/kg N Cov 30B

Zinc as Zn, dry weight 85 mg/kg Y Cov 30

Sulphate as SO4, Tot Potential <0.10 % N Cov 59

Sulphur, Total, Ignition in O2 <0.10 % N Cov 59

Naphthalene 0.17 mg/kg N Cov 307

pH 7.5 pH units Y Cov 39

Organic Matter 3.4 % Y Cov 36

Cyanide, Total <2.5 mg/kg Y Cov 14

Sulphide <7.5 mg/kg Y Cov 47

Monohydric Phenols,Total Dist. <0.75 mg/kg Y Cov 40A

1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPA D1 0.15-0.45m

Sample Date/Time:Sample Received:Analysis Complete:

Birmingham City Council

Laboratory Number:Report Number:

18 July 201104 July 2011

Certificate of Analysis

12470948

Test Description Result Units Accreditation Method

Issueof 8

1Sample 1

Sample Matrix: Soil - Loam

Page 2 of 13


Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Signed:Name:

Title:

Date:L. Ellis


18 July 2011

Description of Sample Analyst Comment Text N Cov 70

Asbestos Identification Analyst Comment Text Y Cov 70

Sulphate as SO4, Water Soluble <0.060 g/l Y Cov 46

Indeno(1,2,3-c,d)pyrene 0.67 mg/kg Y Cov 307

PAH, Total of 16 EPA 8.6 mg/kg Y Cov 307

1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPA D1 0.15-0.45m




18 July 201104 July 2011


12470948


Issueof 8

1Sample 1


Analyst Comments for 12470948: ASBESTOS COMMENTS Asbestos ID : Amosite, Description of Sample: Fibres in soil

Accreditation Codes: Y = UKAS Accredited, N = Not UKAS Accredited, M = MCERTS. Analysed at: Brd = Bridgend, Cov = Coventry, Rea = Reading, Run = Runcorn, S = Subcontracted, Wak = Wakefield. For Microbiological determinands 0 or ND=Not Detected, For Legionella ND=Not Detected in volume of sample filtered. Relating to Legionella volume analysed 1g is approximately equivalent to 1ml. I/S=Insufficient sample

Page 3 of 13


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Anthracene <0.10 mg/kg Y Cov 307





Naphthalene <0.10 mg/kg N Cov 307




Benzo(g,h,i)perylene 0.13 mg/kg Y Cov 307




Benzo(a)pyrene 0.14 mg/kg Y Cov 307

Benzo(k)fluoranthene <0.10 mg/kg Y Cov 307






Arsenic as As, dry weight 9.0 mg/kg Y Cov 30/30C











1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPC D1 0.15-0.48m




18 July 201104 July 2011


12470949


Issueof 8

1Sample 2


Page 4 of 13


Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Signed:Name:

Title:

Date:L. Ellis


18 July 2011




Indeno(1,2,3-c,d)pyrene 0.13 mg/kg Y Cov 307


1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPC D1 0.15-0.48m




18 July 201104 July 2011


12470949


Issueof 8

1Sample 2


Analyst Comments for 12470949: ASBESTOS COMMENTS Asbestos ID : Chrysotile, Description of Sample: Fibres in soil


Page 5 of 13


Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Anthracene <0.10 mg/kg Y Cov 307





Naphthalene <0.10 mg/kg N Cov 307




Benzo(g,h,i)perylene <0.10 mg/kg Y Cov 307




Benzo(a)pyrene <0.10 mg/kg Y Cov 307

Benzo(k)fluoranthene <0.10 mg/kg Y Cov 307




Mercury as Hg, dry weight 0.43 mg/kg Y Cov 30C


Arsenic as As, dry weight 63 mg/kg Y Cov 30/30C











1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPD D1 0.10-0.55m




18 July 201104 July 2011


12470950


Issueof 8

1Sample 3


Page 6 of 13


Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Signed:Name:

Title:

Date:L. Ellis


18 July 2011




Indeno(1,2,3-c,d)pyrene <0.10 mg/kg Y Cov 307


1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPD D1 0.10-0.55m




18 July 201104 July 2011


12470950


Issueof 8

1Sample 3


Analyst Comments for 12470950: ASBESTOS COMMENTS Asbestos ID : Non Detected, Description of Sample: Soil


Page 7 of 13


Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Anthracene 110 mg/kg Y Cov 307

Phenanthrene 300 mg/kg Y Cov 307

Pyrene 240 mg/kg Y Cov 307

Fluoranthene 290 mg/kg Y Cov 307


Naphthalene 75 mg/kg N Cov 307

Fluorene 38 mg/kg Y Cov 307

Acenaphthene 54 mg/kg Y Cov 307

Benzo(a)anthracene 110 mg/kg Y Cov 307

Benzo(g,h,i)perylene 51 mg/kg Y Cov 307

Dibenz(a,h)anthracene 7.4 mg/kg Y Cov 307

Benzo(b)fluoranthene 66 mg/kg Y Cov 307

Chrysene 96 mg/kg Y Cov 307

Benzo(a)pyrene 99 mg/kg Y Cov 307

Benzo(k)fluoranthene 42 mg/kg Y Cov 307






Arsenic as As, dry weight 9.6 mg/kg Y Cov 30/30C



Sulphur, Total, Ignition in O2 0.11 % N Cov 59



Sulphate as SO4, Tot Potential 0.32 % N Cov 59



Monohydric Phenols,Total Dist. 16 mg/kg Y Cov 40A

Organic Matter 12 % Y Cov 36

1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: BH1 D3 0.70-0.90m




18 July 201104 July 2011


12470951


Issueof 8

1Sample 4


Page 8 of 13


Tel:+44 (0)24 7642 1213 Fax:+44 (0)24 7685 6575

Signed:Name:

Title:

Date:L. Ellis


18 July 2011

PAH, Total of 16 EPA 1600 mg/kg Y Cov 307


Indeno(1,2,3-c,d)pyrene 50 mg/kg Y Cov 307

1314 1229 0897 4409

COV/789279/2011





18 July 201104 July 2011


12470951


Issueof 8

1Sample 4


Analyst Comments for 12470951: No Analyst Comment


Page 9 of 13


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Signed:Name:

Title:

Date:L. Ellis


18 July 2011



1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPB D1 0.15-0.45m




18 July 201104 July 2011


12471699


Issueof 8

1Sample 5




Page 10 of 13


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Signed:Name:

Title:

Date:L. Ellis


18 July 2011



1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPE D1 0.05-0.50m




18 July 201104 July 2011


12471700


Issueof 8

1Sample 6




Page 11 of 13


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Signed:Name:

Title:

Date:L. Ellis


18 July 2011



1314 1229 0897 4409

COV/789279/2011

Sample Source:Sample Point Description:Sample Description: TPF D1 0.05-0.50m




18 July 201104 July 2011


12471701


Issueof 8

1Sample 7




Page 12 of 13


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Signed:Name:

Title:

Date:L. Ellis


18 July 2011



1314 1229 0897 4409

COV/789279/2011





18 July 201104 July 2011


12471702


Issueof 8

1Sample 8




Page 13 of 13

Date: 24/08/2011

2139 Certificate Number: 11-52899

Client: Severn TrentSTL Business CentreTorrington AvenueCoventryCV4 9GU

Our Reference: 11-52899

Client Reference: 799739

Contract Title: 799739

Description: 2 soil samples

Date Received: 18 August 2011

Date Started: 18 August 2011

Date Completed: 24 August 2011

Test Procedures: Identified by prefix DETSn, details available upon request.

Notes: Observations and interpretations are outside the scope of UKAS accreditation

Approved By:

Paul Woodbridge, Senior Operations Manager


This certificate is issued in accordance with the accreditation requirements of the United Kingdom Accreditation Service. The results reported herein

relate only to the material supplied to the laboratory. This certificate shall not be reproduced except in full, without the prior written approval of the

laboratory.

Derwentside Environmental Testing Services LimitedUnit 2, Park Road Industrial Estate South, Consett, Co Durham, DH8 5PY

Tel: 01207 582333 • Fax 01207 582444 • email: [email protected] • www.dets.co.uk Page 1 of 4

Analysis

* Denotes test not included in laboratory scope of accreditation

# Denotes test that holds MCERTS accreditation, however, MCERTS

accreditation is only implied if the report carries the MCERTS logo

$ Denotes tests completed by an approved subcontractor

I/S Denotes insufficient sample to carry out test

U/S Denotes that the sample is not suitable for testing

Deviating Samples

Deviating Sample Criteria is based upon the UKAS note "Guidance on Deviating Samples".

! Denotes sample may be deviating due to one or more of the following

1 Sample not received in appropriate containers

2 Sample exceeded holding times

3 Sample received without a Date Sampled

4 Sample received without a Time Sampled (Waters only)

n/a Denotes sample is not deviating

Asbestos (test portion) - 6 months

Information in Support of the Analytical Results

Inorganic soil analysis was carried out on a dried sample, crushed to pass a 425um sieve, in

accordance with BS1377.

Organic soil analysis was carried out on an 'as received' sample.

Key

The laboratory cannot be held responsible for the integrity of sample(s) received whereby the

laboratory did not undertake the sampling. In this instance samples received may be deviating.

Key

Disposal

From the issue date of this test certificate, samples will be held for the following times prior to disposal :-

Soils - 1 month

Liquids - 2 weeks

Derwentside Environmental Testing Services Ltd Page 2 of 4

Summary of Asbestos Analysis

Soil SamplesOur Ref: 11-52899

Client Ref: 799739

Contract Title: 799739

Lab No Sample Ref Material Result

349515 12549202 SOIL Amosite

349516 12549203 SOIL Chrysotile

Crocidolite = Blue Asbestos, Amosite = Brown Asbestos, Chrysotile = White Asbestos

NAD = No Asbestos Detected. Anthophyllite, Actinolite and Tremolite are other forms of Asbestos

Samples are analysed by DETS 082 using polarised light microscopy in accordance with HSG248 and

documented in-house methods. Where a sample is NAD, the result is based on analysis of at least 2 sub-

samples and should be taken to mean 'no asbestos detected in sample


Summary of Asbestos Analysis

Soil SamplesOur Ref: 11-52899

Client Ref: 799739

Lab No. 349515 349516

Sample Ref 12549202 12549203

Depth

Other Ref

Sample Type Soil Soil

Test Units DETSxx

Asbestos ID DETS 082 Amosite Chrysotile

Total Mass% Asbestos (i+ii) Mass % <0.001 <0.001

0.00027698 0.000327507

Quantification by Phase Contrast Optical Microscopy (i) Mass % DETSC 1102 <0.001 <0.001

Gravimetric Quantification (ii) Mass % DETSC 1102 na na

Breakdown of Gravimetric Analysis

Mass of Sample g 1162.44 927.10

ACMs present*

Mass of ACM in sample g

% ACM by mass %

% asbestos in ACM %

% asbestos in sample %

* Denotes test or material description outside of UKAS accreditation.

% asbestos in Asbestos Containing Materials (ACMs) is determined

by reference to HSG 264.

Recommended sample size for quantification is approximately 1kg

Contract Title:


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