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PVC sheet piling for cutoff and containment barriers
August 1st, 2020
By Brendan Sheppard and Steve Hargrave FIGURE 1 30-foot (9.1-m) long PVC sheet pile installed with a fixed mast pile driver in August 2015 Polyvinyl chloride (PVC) sheet piling (Figure 1) has been used for more than 25 years in bulkheads throughout the United States and beyond as a replacement for steel, concrete and timber […]
Layfield launches gas barrier geomembrane
January 14th, 2019
Layfield Geosynthetics announced the release of VaporFlex® Premium geomembrane. VaporFlex® Premium is a 7-layer coextruded geomembrane barrier with an ethylene vinyl alcohol (EVOH) core layer. This high-performance geomembrane is specifically designed to provide an ultra-low permeability gas barrier in a broad range of geoenvironmental applications. When compared to high-density polyethylene (HDPE), the VaporFlex® Premium was […]
Reviving the Palos Verdes Reservoir—Part 2
April 1st, 2018
The October/November 2016 issue of Geosynthetics published Part 1 of this series on revitalizing the Palos Verdes Reservoir in Los Angeles County, California. That article described the approach to revitalizing the site, as well as the five-month-long geosynthetic manufacturing and fabrication phase. In Part 2, we continue to explore more of the inner workings for […]