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Pittsburgh Water & Sewer Authority taps Layfield Geosynthetics for floating cover for reservoir
November 10th, 2021
Photograph courtesy of Pittsburgh Water & Sewer Authority The Pittsburgh Water & Sewer Authority (PWSA) chose Layfield Geosynthetics (USA) for the supply and installation of a new chlorosulfonated polyethylene (CSPE) liner and floating cover system for the Highland 2 Reservoir. The project includes demolition of the old liner and cover and fabrication and construction of a […]
Seattle awards Layfield with large CSPE floating cover project
August 18th, 2021
Photograph courtesy of Layfield USA Corp. Layfield USA Corp. announced the award for the supply and installation of a new chlorosulfonated polyethylene (CSPE) liner and floating cover system for the Seattle Public Utilities Lake Forest Park Reservoir project in Washington State. The project is a unique and challenging double reservoir system with 60 million gallons […]
CSPE: The “Benjamin Button” of polymeric liners
July 26th, 2021
CSPE-lined Palos Verde Reservoir in Los Angeles County, Calif. Photograph courtesy of Raven Engineered Films Most polymeric liners undergo oxidative aging immediately after installation, and this continues over time, ultimately leading to a reduction of their molecular chain length (this destructive process is referred to as oxidative degradation). In particular, high-density polyethylene (HDPE), linear low-density […]
Layfield USA completes two CSPE reservoirs
February 15th, 2021
Layfield USA Corp. announced the completion of the supply and installation of a chlorosulfonated polyethylene (CSPE) liner and floating cover system as part of a refurbishing and upgrade project for Pittsburgh Water & Sewer Authority’s (PWSA) Lanpher Reservoir. The Lanpher Reservoir is a double reservoir, potable water storage system (East and West reservoirs) with a […]
The GMA Techline
June 1st, 2020
Moderated by George R. Koerner Minimum sediment thickness Q: We are going to construct some evaporation ponds on existing sediment on top of a Hypalon geomembrane. The sediment looks to be predominantly fine. The subgrade condition below the liner is not known for sure. In such conditions, can you recommend a minimum sediment thickness that […]
CSPE performance and history in long-term potable water storage applications
April 1st, 2020
By Brian Fraser, Steven Roades, Mike Neal and Alex Gersch Chlorosulfonated polyethylene (CSPE) is a synthetic rubber-based material manufactured by a calendaring process into multiple layers and combines with a polyester reinforcement fabric for additional strength. Hypalon is a DuPont trademark for CSPE synthetic rubber (CSM) noted for its resistance to chemicals, temperature extremes and […]
Reviving the Palos Verdes Reservoir—Part 4
August 1st, 2019
By John Heap and Chris Kelsey The active site work for the Palos Verdes Reservoir’s substantial update began in late 2016, advanced primarily throughout 2018 and concluded in the second quarter of 2019 with the filling of the reservoir. The project was immense for everyone involved, and with that has come the expected excitement, challenges […]
Reviving the Palos Verdes Reservoir, Part 3
February 1st, 2019
California’s water infrastructure is one of the most challenged systems in the United States due to the large population it supports, the age of much of the water infrastructure, and the diverse environments—mountains, coastlines, old-growth forests, deserts—found in the state. The water infrastructure is also one of the country’s most advanced systems, in part due […]
Burke announces partners for CSPE geomembranes
September 8th, 2015
San Jose, Calif.-based Burke Industries announced in a Sept. 8 press release that it has established exclusive strategic partnerships with Colorado Lining International Inc. (CLI) and Layfield Environmental Systems Corp. (Layfield) for the distribution and fabrication of all Burke chlorosulfonated polyethylene (CSPE) geomembrane products and systems. The two companies will manage Burke’s CSPE geomembranes in […]