TenCate Geotube® Technology Selected For Largest Tube Project In USA

PENDERGRASS, Ga. — January 10, 2012 — TenCate Geosynthetics Americas is selected by Parsons
Engineering of New York as the sole source to supply TenCate Geotube® containers for the dredging
project on Onondaga Lake, in the State of New York. This project is the largest geotextile tube
project in the US and North America.

As a result of over a century of industrial activity on the shores of Onondaga Lake, lake
sediments have been contaminated with chemicals such as heavy metals, PAH’s and volatile organic
compounds (e.g., chlorobenzene). Due to this contamination, Onondaga Lake and related upland sites
were added to the Federal Superfund National Priorities List (NPL) in 1994.

Dewatering and storage

The design by Parsons Engineering is to hydraulically dredge an estimated 2.1
million cubic yards of waste and pump it to a 50 acre dewatering cell through 4 miles of
double-walled pipeline. Their design specifies containing and dewatering the waste in geotextile
tubes stacked 30 feet in height. TenCate Geotube® containers, of various large circumferences, will
be supplied to dewater the sediments. This project is scheduled to begin in the spring of 2012 and
is planned to continue for 4 years. Upon completion of dredging and dewatering, TenCate Geotube®
containers will be permanently stored in the capped cell.

“TenCate has been chosen for the value it brings to the project”, comments Vicki Ginter,
Regional Market Manager at TenCate Geosynthetics Americas. “This includes the unique features of
the TenCate Geotube® containers such as circumferential seams and mechanical geoports, a history of
projects worldwide that are similar in scope and complexity, technical services including
geotechnical engineering support and detailed layout drawings for the dewatering cell, quality
control evidenced by its ISO 9001 certification and A2LA certified labs and the history and
strength of the TenCate corporation.”

Posted on January 10, 2012

Source: TenCate Geosynthetics Americas