3rd Party Assurance

Since 2006, CSI companies participating in GNR have used independent third party limited assurance of their CO2 emissions information. Other participants are strongly encouraged to adopt data assurance practices as part of their participation. This assurance process is managed at a company level and involves potential visits by the independent assurance provider to a sample of a company’s facilities. The number and location of such visits is determined solely by the assurance provider, and must be stated in their assurance summary.

Of the 2008 data submitted to the GNR, 77% has been assured independently at company-level.

Data Quality Verification

Once data collection is completed, PricewaterhouseCoopers (PwC ), the database manager, performs a series of consistency checks to ensure that (a) data is correctly situated in the system, (b) values submitted fall within a range usually observed in the industry, and (c) that data for all facilities has been supplied. Using an iterative process, PwC liaises with participant companies to assess the validity of data values that fall outside expected ranges. For cases where companies fail to explain an anomalous data point, the CSI has retained an independent third party cement industry specialist to provide anonymous expert review.