New C-Class geotextiles from Typar

April 4, 2013

Tennessee manufacturer received AASHTO-NTPEP certification Typar Geosynthetics announced in a press release a new addition to its 40 years of Typar geotextile manufacturing: Typar C-Class Construction Fabrics. Engineered for use in AASHTO M-288 applications and to provide strength, uniformity, and durability characteristics, the C-Class provides stabilization, separation, drainage, and erosion control. The release noted that …

Christopher Neumann named IECA’s ‘Presenter of the Year’

April 3, 2013

Lawyer/engineer selected by attendees at 2013 Environmental Connection The International Erosion Control Association (IECA) announced in a recent press release that Christopher Neumann, shareholder with the international law firm, Greenberg Traurig LLP, was selected the Environmental Connection 2013 Presenter of the Year. This award selects one outstanding presenter each year who demonstrates excellent presentation skills, …

Cooley introduces new engineered geomembrane

April 2, 2013

Coolguard PW for liner and cover applications Pawtucket, R.I.-based Cooley Group, announced in a March press release the launch of Coolguard PW, a geomembrane designed for reservoir lining and floating cover applications requiring National Science Foundation 61-certification. Cooley’s newest membrane was developed by applying the chemistry of its Coolguard product line, which is used for …

Geosynthetic opportunities for shale gas plays worldwide

April 1, 2013

By Bob and George Koerner The geosynthetic opportunities associated with shale gas plays are numerous and essentially involve every type of geosynthetic material. Specific applications that have been identified and implemented at several well sites include: At the drill pad: drilled pad liners for accidental spills composite pond liners for water double pond liners for …

Cal Poly Pomona captures student competition prize at 2013 GeoCongress

By Prof. Bill Kitch I’m really proud of this group of students. The competition was really tough this year—especially with the addition of the dynamic loading. Not only did they have a great design, but they came together as a team under the strong leadership of their captain, Petrina Zen. This competition provides an excellent …

Measuring pore size distribution (PSD) with the use of capillary flow porometry

By Trent Smith and Melissa Medlin An ASTM D35 Committee Workshop on Pore Size Distribution was conducted on Jan. 30, 2013, in Jacksonville, Fla. The current industry standard for measuring a geotextile’s particle retention characteristics—ASTM D4751, Test Method for Determining Apparent Opening Size of a Geotextile (AOS)—shows one attribute for the potential filtration capability in …

Bituminous geomembrane in a final cover exposed to tidal action

By Tarik Hadj-Hamou and Bertrand Breul Abstract Final closures of old abandoned landfills often pose technical and logistical challenges. A small (5 hectares/12 acres) landfill created by pushing waste into a tidal wetland on the edge of Suisun Bay in Northern California was no exception. The initially proposed final cover design called for 60cm (23in.) …

Measuring a giant one step at a time

Leak location survey at the Columbus Upground Reservoir (CUGR) By Abigail Beck Introduction Once construction is complete later this year, the Columbus Upground Reservoir (CUGR) will be the largest continuously-lined lagoon on the planet, nearly twice as large as the lagoon currently holding that title. The sheer enormity of the project has been compounded with …

Use of geosynthetics in wind farm access roads

Case histories from Poland, Canada, and U.S. By Stephan M. Gale, P.E., D.GE., Mark Kurtz, Fred Chuck, P.E., and Dick Janse Introduction The location of a renewable energy project is based on many technical and political issues. Sites are selected because of available wind forces, power distribution, and land leasing issues, but not normally on …

Back to the waterfront (in Toronto)

By Ron Bygness In the October/November 2011 issue of Geosynthetics, we looked at how a popular section of Toronto was being redeveloped, thanks to the drainage power of the mighty little wick drain. The article “On the waterfront (in Toronto)” specifically featured the West Don Lands, an 80-acre area situated just inland from what developers …