Scope of the Assurance
Lloyd's Register Quality Assurance, Inc., (LRQA) has been engaged by Chevron to review the reporting processes used in the creation of the Chevron 2007 Corporate Responsibility Report. The objective of the review was to validate the integrity of Chevron's reporting processes.
The scope of the assurance was limited to the processes used for globally reporting health, environmental and safety (HES) performance indicators. The review did not extend to LRQA evaluating the accuracy of data input into Chevron’s reporting processes.
The Chevron 2007 Corporate Responsibility Report has been prepared by Chevron, which is solely responsible for the collection, presentation and accuracy of all data and information presented within it.
Approach
The assurance was based on interviews with key personnel to identify and gain an understanding of the reporting arrangements, followed by reviews of the processes for collecting, compiling and reporting the relevant HES indicators. In order to form our conclusions, LRQA has carried out:
- A review of the documented reporting requirements to assure consistency of scope, definition and reporting for each of the indicators.
- A review of the reporting processes at the corporate level to evaluate the processes used by Chevron to assure completeness, consistency and accuracy of data reporting across the organization.
- Reviews of the data reporting processes at a sample of three business units chosen to assess local understanding and implementation of reporting requirements.
- A review of the processes used to aggregate the information at the corporate level for inclusion in the final report.
Conclusions and Findings
Based on the scope of the assurance and the information presented for review, objective evidence was available to support the following conclusions:
- Chevron has processes in place to determine that sites that contribute to health, environmental and safety metrics understand corporate reporting requirements and are included in corporate HES reporting.
- The methods used for calculating each metric are clearly defined and communicated.
- Data collection begins at the operating site level and is combined into corporationwide metrics.
- HES indicators included in the Corporate Responsibility Report are checked by Chevron for completeness, consistency and accuracy against its reporting requirements.
- Responsibility for annually reviewing and updating reporting guidelines is clear, and improvement in methodology is regularly undertaken.
LRQA believes the Chevron reporting process is effective in delivering health, environmental and safety indicators for the purpose of evaluating and communicating corporate performance in these areas.
Thomas Sliva
On behalf of Lloyd’s Register Quality Assurance, Inc.
February 28, 2008