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Hugo, Colo., wastewater treatment system improvements
June 1st, 2023
FIGURE 1 Sand ballast placement operation Around 1859 the town of Hugo, Colo., was developed as a cattle ranching community to supply miners with provisions and to serve as a local stagecoach stop. It was officially founded in 1870 and incorporated in 1909; this frontier community of 786 people is located off I-70 east of […]
Layfield introduces HydraNet geonets/geocomposites
April 7th, 2022
Layfield introduces HydraNet geonets/composites, described as cost-effective and environmentally conscious alternatives to aggregate drains. Layfield Group Ltd. has launched HydraNet, a premium line of geonets and geocomposites. HydraNet is constructed from either two strands (biplanar) or three strands (triplanar) of high-density polyethylene (HDPE) extruded into a net-like sheet. Geonets are used to provide channelized flow […]
Complex geosynthetic liner system for the 70 Ranch Raw Water Reservoir
April 1st, 2022
FIGURE 1 North end of reservoir showing slope panels transitioned into bottom panels and staged cover soils placement on bottom panels Irrigation water in the western United States has always been a major concern for farming and ranching, especially in drought years. Water can be both scarce and expensive, and planning for future water storage […]
Conductive liner for a copper mine reservoir
February 5th, 2021
At a large copper mine in the U.S., a lined stormwater reservoir needed to be constructed for containment of runoff and process water. The integrity of the reservoir liner was critical as failure could result in contamination of groundwater. Solmax installed a double liner system, using Leak Location Conductive liner. This would ensure reliable electric […]
The GMA Techline
August 1st, 2020
Seaming dissimilar geomembranes Q: I kindly request your technical support in the questions below: A nonpolyethylene geomembrane was used in phase 1 of the tailings dam waterproofing system of a gold mine. For the expansion (phase 2), the use of a high-density polyethylene (HDPE) geomembrane is being evaluated. How can the HDPE geomembrane join the bituminous […]
Lessons learned in alternative coal ash pond closure design and construction
October 1st, 2019
By Anna M. Saindon Coal ash pond closures often face unique challenges due to location, available borrow soils and construction constraints. These challenges can lead to alternative methods of closure to comply with Resource Conservation and Recovery Act (RCRA) Subtitle D and coal combustion residuals (CCR) regulations. This article summarizes the construction of the first […]
GSI to host webinar on geosynthetic drainage materials
January 11th, 2019
The Geosynthetic Institute (GSI) will sponsor a webinar “Geosynthetic Drainage Materials: Applications, Design, Installation and Performance,” on Jan. 24, 2019, from 11:30 a.m. to 1 p.m. EST. Geosynthetic Materials Association (GMA) member companies and their employees receive discounted rates on all GSI webinar and short course registrations. Geosynthetic drainage materials consist of a drainage core […]