BVQI verification statement to the management of STMicroelectronics NV

Bureau Veritas Quality International, France, has been engaged to provide assurance services to STMicroelectronics.

Introduction

This Attestation Statement applies to the STMicroelectronics Corporate Responsibility Report 2005 (the 'Report'). The preparation of the Report and its content is the responsibility of STMicroelectronics. BVQI's responsibility is to attest the validity of the data reported herein within the confines of the scope of work set out below.

Scope of work

The scope of BVQI's work was determined following the discussions with STMicroelectronics, as follows:

1. Review of the environmental and social performance data for the period 1st January 2005 to 31st December 2005
2. Information reported, including that against the GRI indicators
3. Review of systems and procedures for the collection, compilation and consolidation of environmental and social data
4. Review of internal quality and consistency controls against such data
5. An overview of the complete CR Report to ensure its consistency with the findings of our work.

Exclusions from the scope of our work

The following exclusions apply to the scope of our work:

• Data falling outside the 2005 reporting period, as defined above
• The information hyperlinked from the 2005 CR Report.

Basis of our opinion

BVQI's work was planned and carried out to provide reasonable, rather than absolute, assurance and we believe that the work conducted as described in the scope of work above provides a reasonable basis for our conclusions. We relied on the presentations made to us during the course of our work by STMicroelectronics personnel through interview, selective sampling and review of documentary evidence incorporating visits to Agrate (Italy), Crolles (France) and Geneva (Switzerland) sites of STMicroelectronics.1

Assurance conclusions

It is our opinion that:

• The management of environmental and social data for inclusion within the Report is based on systematic procedures and controls
• Such systems are adequately embedded at the STMicroelectronics sites that we visited, to ensure quality and consistency of the reported information
• During the course of our work nothing came to our attention to indicate that there was any material error, omission or misstatement
• The reported data is reliable and free from significant error or bias, and provides a fair representation of STMicroelectronics' environmental and social performance.

KPIs are highlighted in the ST indicator index on the flap inside the back cover of this Report and throughout the Report as .

Areas for ongoing improvement

The internal indicators come from different databases and internal software. STMicroelectronics should establish a formal link between those databases and the published indicators, i.e. same name, same unity.

Considerations and limitations

In relation to our work and conclusions the following considerations and limitations should be noted:

• Certain information is excluded from the scope of our work, as stated above
• Environmental and social data are subject to inherent limitations due to their nature and the methods used for determining, calculating or estimating such data. Therefore this independent attestation statement should not be relied upon to detect all errors, omissions or misstatements in the reported data
• Attestation of data relating to greenhouse gas emissions does not provide a level of verification sufficient for the purpose of emissions trading.

Romain Petit
General Manager, BVQI France