TenCate Miragrid® Geogrids Complete NTPEP Evaluation Process

Pendergrass, Ga.-based TenCate™ Geosynthetics’ Miragrid® XT geosynthetic reinforcement product line
has completed evaluation by the National Transportation Product Evaluation Program (NTPEP).

The evaluation process was developed by the American Association of State Highway and
Transportation Officials in conjunction with NTPEP to assess production and performance data for
geosynthetic reinforcements. Conducted according to Washington State Department of Transportation
Standard Practice T925, the evaluation determines the long-term strength of the geogrid, including
factors affecting long-term strength reduction. The data are used by state departments of
transportation and other regulatory agencies to create Qualified Products Listings.

“The Project Work Plan developed by NTPEP is among the most stringent review processes
available for geosynthetic reinforcement materials,” said John Henderson, vice president of
marketing, TenCate Geosynthetics. “This final evaluation is a compilation of years of research and
testing to truly characterize the Miragrid XT product line.”

March 18, 2008