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MACC a

NON INTRUSIVE SURVEY FOR

UNEXPLODED ORDNANCE AT THE

BASKETBALL TEMPORARY TRAINING VENUE

LEA BRIDGE ROAD LEYTON E10 7QL

Prepared for: Nussli (Switzerland) Ltd

Project Number: 3368

Report Number: 3368/13

Dated: 7th February 2012

This document has been produced by MACC International Limited solely for the purpose of assessment and evaluation. It may not be used by any person for any purpose other than that specified without the express written permission of MACC International Limited. Any liability arising out of use by a third party of this document for purposes not wholly connected with the above shall be the responsibility of that party, who shall indemnify MACC International Limited against all claims, costs, damages and losses arising out of such use.

MACC International Limited Ipswich, England

DISTRIBUTION

Copy No. 1 Nussli (Switzerland) Ltd

Copy No. 2 MACC International Limited

Prepared by: Tony Fiteni Projects Manager

Checked by: Keith Burrows Managing Director

Issue Dated 7th February 2012

Project No. 3368 Dated: 7th February 2012


CONTENTS

Title Pages

Distribution i

Contents Page ii

Instruction 1

Scope of Work 1

The Survey 2

Data Maps 2

Findings 2

Recommendations 2

Annexes:

A. Survey Area (Figures 1, 2 and 3) B. Data Maps

Project No. 3368 Dated: 7th February 2012


1

1.1

2

2.1

2.2

2.3

3

3.1

3.2

INSTRUCTION

MACC International Ltd, at the request of Nussli (Switzerland) Ltd, was required to carry out a non-intrusive magnetometer survey for Unexploded Ordnance (UXO) within an area designated for the Basketball Temporary Training Venue.

SCOPE OF WORK

A 3rd party (AndArchitects) provided MACC with a drawing of the subject area with the 4 corner coordinates (see Annex A, Fig 1).

The non-intrusive survey was carried out on the 1st and 2nd of February 2012, u channel gradiometer magnetometer together with Sensys™ data acquisition eq The areas were surveyed in accordance with the method statement previously sub

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3.3

This report has been specifically prepared for Nussli (Switzerland) Ltd, without the benefit of knowing the intentions of any third parties; therefore, it should not be used by such organisations without prior consultation with MACC International Ltd.

THE SURVEY

The client initially requested that MACC confirm the coordinates of 3 known datum points adjacent to the survey area. The recorded datum coordinates were:

• E 535597.582, N 186878.840 • E 535662.160, N 186878.574 • E 535720.062, N 186884.928

Using the supplied coordinates (detailed in Annex A, Fig 1), the 4 corners of the survey area were marked using wooden stakes sprayed yellow. The survey area was then divided into a total of 9 boxes (numbered 1 to 9) for survey and data analysis (see Annex A, Fig 2 for sketched box layout and Fig 3 for post survey representation of total area).

The results of the non-intrusive survey indicate a very large amount of ferrous contamination right across the survey area.

3.4 The actual data maps (numbered 1 to 9) are detailed in Annex B.

1 Project No. 3368



4 DATA MAPS

4.1 The anomaly map shows a ferromagnetic object denoting its positive and negative poles.

Negative Pole

Positive Pole

5 FINDINGS

5.1 The gross level of ferrous contamination is consistent across the site and renders the data unworkable.

6 RECOMMENDATIONS

6.1 Because the data is unworkable, items of UXO cannot be discerned from the background clutter. Therefore it is recommended that all intrusive works are supervised by a suitably qualified Explosive Ordnance (EO) Engineer. His responsibilities would include:

• The provision of EO Awareness Briefings (toolbox) to all ground workers.

• Supervision (Watch & Brief) of all excavations to positively identify any suspicious objects thus minimising down time for false alarms.

• The orchestration of the safe disposal of a positively identified item of UXO (via the Police and Military).

2 Project No. 3368


Annex A To Report 3368/13

Dated 7th February 2012

SURVEY AREA

Fig 1 - Survey area and Coordinates

A - 1



SURVEY AREA

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Fig 2 - Sketched layout of boxes 1 to 9 in order of survey

A - 2

SURVEY AREA



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Fig 3 - Boxes 1 to 9 stitched together (total area 118m x 135m)

A - 3



DATA MAPS

The survey area was divided into a total of 9 boxes (see also Annex A Fig 2 and Fig 3).

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