August 1, 2011
Introduction Construction materials continue to be a major source of greenhouse gases (GHG), based on the fossil fuels used in their production. As the amount of greenhouse gases generated each year continues to increase, there is a conscious effort to provide alternatives with lower carbon footprints. Geosynthetics have always provided cost-effective alternatives to traditional construction …
June 27, 2011
Agency to conduct field work in various regions of the country starting this summer. The U.S. Environmental Protection Agency (EPA) announced in a June 23 press release the next steps in its congressionally mandated hydraulic fracturing study. The EPA has identified seven case studies to help examine potential impacts of hydraulic fracturing (“hydrofracting”) on water …
June 15, 2011
Replacing a geomembrane layer is part of a $163 million repair and expansion job for Tampa Bay Water’s (TBW) cracked reservoir. The Kiewit Infrastructure Group’s proposal aims to repair and expand the utility’s six-year-old, 15.5-billion-gallon facility. Kiewit estimates repairs at about $121 million. The contractor’s plan will remove and reclaim the reservoir’s existing flat-plate soil …
June 1, 2011
Geomembrane performance: Lessons learned—Part 1 By Abigail Beck Introduction While intact, geomembrane lining systems provide excellent liquid containment. With good quality control, it is possible to install a geomembrane with few or no holes. However, geomembranes are exposed to a variety of adverse conditions that can reduce, or even destroy, the integrity of the geomembrane …
By Andrew Mills This is the first in a series of occasional articles from the Fabricated Geomembrane Institute (FGI). The topic for this first installment is fabricated geomembranes for golf course ponds. Golf course ponds have a couple features in common. In most cases, a golf course pond will contain water for course irrigation. The …
December 14, 2010
Fiberweb has launched a new website that features its Defencell Force Protection Systems, a lightweight ballistic and blast barrier solution that offers weight and space savings, according to a December news release. Created for U.S. military personnel, DefencellUSA.com provides performance data that highlights how the Defencell system can reduce the number of containers necessary to …
June 1, 2010
By Terence G. Sheridan, P.E. Introduction Stormwater management is an ever-increasing expense on site development projects. Stormwater detention ponds are designed to protect against downstream flooding and environmental degradation. The standard of practice is to ensure that post-development flow from a site does not exceed the pre-development rate for a given storm event. Where land …
February 1, 2010
TenCate Geosynthetics wins in 2009 International Achievement Awards The processing of raw coal to a saleable clean coal requires that mine operators wash the run-of-mine product using a processing plant. The raw coal contains impurities composed of rock and fireclay. Two waste streams are created by this process: coarse rock and fine rock particles. At …
TenCate Geosynthetics wins in 2009 International Achievement Awards In 2002, Ontario’s provincial legislature and the Ministry of Environment (MOE) produced a policy paper announcing its intent to eliminate the land application of untreated septage (septic tank waste). While 90% of residents in Ontario used local sanitary sewers to dispose of waste and, therefore, were unaffected …
February 1, 2009
Project highlights: The Shops at Sycamore Creek (15.6-acre site), Corona, Calif. Location: Riverside County, Calif., Interstate-15 Freeway Frontage and Indian Truck Trail (adjacent to the Elsinore Fault zone) Purpose of retaining wall: To create a construction pad allowing enough flat buildable land for the ensuing retail development. Due to the height and magnitude, Riverside County …