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Registration open for Environmental Connection 2014
October 3rd, 2013
IECA’s annual conference Feb. 25-28 in Nashville Registration is now open for the International Erosion Control Association’s (IECA) Environmental Connection 2014. EC-’14 will include new and interactive education sessions, the largest expo of its kind, and opportunities to develop new business relationships at the world's largest soil and water event. There are nine pre-conference courses […]
Strata acquires 50% equity in Geo Solucões
October 2nd, 2013
Opportunities in South American markets with World Cup, Olympics In a Sept. 30 press release, Strata Systems Inc. announced that it has acquired 50% of the equity in Brazil-based Geo Solucões Ltd. Geo Solucões, a 12-year-old company with offices in Sao Paulo and Rio de Janeiro, designs and builds advanced soil reinforcement structures including retaining […]
Mullen Burst Test?
October 1st, 2013
From the GMA Techline RE: Mullen Burst Test? I have a project that requires the Mullen Burst Test (ASTM D3786) be performed on a geotextile that is described as a needle-punched, nonwoven geosynthetic fabric suitable for reinforcement applications. I have been told by a supplier that the Mullen Burst Test is no longer recognized by […]
Technical reference for LLDPE cover soil depth
October 1st, 2013
From the GMA Techline RE: Technical reference for LLDPE cover soil depth We are working on a project and our installation procedures are being questioned—specifically, what basis do we have for claiming that 36in. of cover soil will protect a 40 mil liner from damage. Our firm has always used 12, 24, or 36 inches […]
Carbon footprint of geosynthetics
October 1st, 2013
From the GMA Techline RE: Carbon footprint of geosynthetics One of my students is working on the topic “of influence of geosynthetics on the reduction of carbon footprint of geosynthetics in pavement construction. We are unable to get any data on the energy required for producing typical geosynthetics (geotextiles, geogrids, geocells) per square meter area. […]
Coated, fabricated geomembrane modernizes Tempe’s water infrastructure
October 1st, 2013
By John Heap Introduction The primary water treatment system in the city of Tempe, Ariz., serves about 160,000 residents and includes two main facilities: the South Tempe Water Treatment Plant (opened in the 1980s) and the Johnny G. Martinez Water Treatment Plant (built in 1967). The Martinez plant is a 50-million gallon per day (MGD) […]
Silt fence?
October 1st, 2013
From the GMA Techline RE: Silt fence? What are the test methods and specifications for silt fence? (Barry | Georgia) Reply: AASHTO M288 is what most people use for the silt fence specification. In it is a series of test method requirements and these are ASTM Standards. If you want we can send the tables […]
Monitoring moisture change?
October 1st, 2013
From the GMA Techline RE: Monitoring moisture change? There is an opportunity to monitor an application of the enhanced barrier system at a [municipal] hazardous waste site … for which an extension is currently under construction. The consultant, contractor, client, and authority will be monitoring temperature with time. We would, however, like to monitor GCL […]
HDPE liner failures
October 1st, 2013
From the GMA Techline RE: HDPE liner failures I am looking for information related to predictions or assessments of liner failures. The lead regulatory agency for an Environmental Impact Statement (EIS) is requesting data on HDPE liner failure assessments associated with geosynthetic covers. Our application is to use HDPE to cover an overburden stockpile with […]
Synopsis of panel discussion on liner integrity surveys
October 1st, 2013
From a presentation at the Geosynthetics 2013 conference By Abigail Beck Editor's note: Proceedings from the Geosynthetics 2013 conference are available at IFAI A standing-room-only crowd gathered April 3, 2013, for the panel discussion “How to specify a geoelectric leak location survey,” presented during the Geosynthetics 2013 conference April 1–4 in Long Beach, Calif. The […]