TenCate Geosynthetics Americas Completes First Ever NTPEP On-site Audit For Geosynthetic Reinforcement

PENDERGRASS, Ga. — May 30, 3012 — TenCate Geosynthetics announced that the TenCate Miragrid® XT
geogrid product line has completed the first ever evaluation by the National Transportation Product
Evaluation Program (NTPEP) which incorporated an onsite audit of the manufacturing facility.

The American Association of State Highway and Transportation Officials (AASHTO) in
conjunction with NTPEP have developed a process for the evaluation of production data and field
performance data for reinforcement geosynthetics. The data generated by NTPEP is valuable for State
DOT’s and other regulatory agencies to develop and maintain Qualified Products Listings (QPL). As
of 2011, an audit phase has been added to the evaluation process in order to verify the consistency
of the geosynthetic reinforcement in accordance with the REGEO work plan.

“We are very proud of our manufacturing process and procedures,” stated John Lostumbo, PE,
Market Manager for Engineered Structures. “The Project Work Plan developed by NTPEP, which now
incorporates an on-site audit process, is among the most stringent review processes available for
geosynthetic reinforcement materials.We are excited to be the first geosynthetic producer to
complete this evaluation process.”

The evaluation is performed in accordance with WSDOT Standard Practice T925 to determine the
long-term strength of the geosynthetic reinforcement, including the long term strength reduction
factors. Detailed evaluations are performed on creep,installation damage, and durability to
determine the appropriate reduction factors.Additional conformance testing is performed to provide
additional verification of these reduction factors. According to the report from NTPEP, “An on-site
audit to verify the consistency of the TenCate Miragrid® XT product line was conducted at TenCate’s
manufacturing plant on June 8, 2011, in accordance with the REGEO work plan. The audit verified
that the materials and processing used to manufacture each product in the line are consistent and
meet the definition of a product line in the NTPEP work plan and WSDOT T925.”

Posted on June 19, 2012

Source: TenCate Geosynthetics Americas