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Profile introduces topsoil alternative
February 23rd, 2015
Establishing vegetation in poor soil conditions In a Feb. 19 press release, Buffalo Grove, Ill.-based Profile Products introduced ProGanics, a patent-pending media intended to help establish sustainable vegetation in difficult conditions. The release stated: “ProGanics is a sustainable solution designed for any project where soils have low organic matter, low nutrient levels, and limited biological […]
Mount Polley mining pond disaster investigation
February 12th, 2015
Poor design ’loaded the gun,‘ steep slope ’pulled the trigger' By Ron Bygness Building an unlined tailings pond over a weak foundation was step one leading to a disastrous dam breach that unleashed millions of cubic meters of sludge into adjacent lakes and rivers in south-central British Columbia, Canada. The widespread destruction occurred in the […]
Raven offers new online learning course
February 6th, 2015
“Critical elements in specifying underslab moisture & gas barriers” Sioux Falls, S.D.-based Raven Industries’ Engineered Films Division announced in a Feb. 3 press release that it now offers a new, free online distance learning course approved by the American Institute of Architects Continuing Education System (AIA CES). The course, “Critical elements in specifying underslab moisture […]
New video from IGS: ‘Geosynthetics for Sustainable Development’
February 4th, 2015
How geosynthetics are part of the sustainability conversation The International Geosynthetics Society (IGS) announced in a Jan. 27 press release the availability of its new video: “Geosynthetics for Sustainable Development.” The video produced by the IGS Education Committee, asks the question: “What defines quality of life?” The release said: “It’s a question that is being […]
Aria Energy, Casella Waste to develop renewable energy project at Maine landfill
February 3rd, 2015
4.8MW landfill gas-to-energy for 4,800 homes Novi, Mich.-based Aria Energy announced in a Jan. 30 press release that it will partner with Casella Waste Systems to develop, construct, own and operate a 4.8MW landfill gas-to-energy project at the Juniper Ridge Landfill in Old Town, Maine. According to the release, the facility, which will utilize methane […]
HNY to all
February 1st, 2015
By Ron Bygness Special Happy New Year (HNY) greetings are in order for our many readers, contributors, and colleagues involved with geosynthetics and Geosynthetics magazine. And HNY for all of our acronym friends who especially stood out in 2014: HNY, EPA—The U.S. Environmental Protection Agency was told by the court to finally issue its ruling […]
Part 1: The first double geomembrane liner 40 years later
February 1st, 2015
First constructed in June 1974 and has been in continuous service since then. By J.P. Giroud and J.P. Gourc Introduction The first double liner with two geomembranes was constructed in June 1974 and has been in continuous service since then. The double-lined structure is a water reservoir located in Pont-de-Claix, near Grenoble in southeastern France. […]
Design considerations
February 1st, 2015
By Richard Thiel, Edward Kavazanjian Jr., and Xuan Wu Introduction Figure 1 shows a conceptual cross section of a landfill sideslope, including final grades at the end of waste placement and the ultimate grades due to the settlement that occurs following the end of waste placement. Settlement at any point in the landfill will be […]
Reconstructing and relining Nottingham Lake high in the Rockies
February 1st, 2015
Replacing a 32-year-old liner. By Bart Ewing and Duff Simbec Introduction Nottingham Lake is nestled high in the Rocky Mountains and has been the pride of Avon, Colo., for as long as anyone can remember. Tourists and residents use the lake for winter recreation and for boating, fishing, and swimming in the summer. It serves as […]
Rail project required separation, filtration, reinforcement
February 1st, 2015
Introduction The Canadian National Railway (CN Rail) wanted to build an additional six-track extension at its Transcona Yards in Winnipeg, Manitoba. Heavy railcars were expected to pass over this extension area and CN Rail was looking for an economical, efficient, environmentally friendly, and technically sound solution for its track extension. Challenges The construction site had […]