Hazardous Waste Leachate Prevention

In 2011 Wolf Remediation Ltd completed a composite barrier wall for energy giant Kinder Morgan. The site was a terminal used for the storage of fuel. The wall was designed to prevent leaching of hazardous waste; hydrocarbons; from the site into the Willamette River.

Under strict supervision of the Oregon Department of Environmental Quality (DEQ), Wolf Remediation Ltd installed the 360-foot long, 30-foot deep, subsurface composite sheet pile barrier within the green way setback of the river.

With such a high level of environmental concern, Wolf Remediation Ltd worked with CH2M Hill to engineer a composite sheet piling barrier wall with the least impact on environment, and highest quality assurance and control available.

Composite Sheet Piling with Electronic Monitoring

For strength and durability, Fiberglass Reinforced Polymer (FRP) composite sheet piling was used. FRP composite sheet piling possesses structural quality comparable to steel. FRP is compatible with the abnormal high levels of hydrocarbons found on-site – unlike steel, FRP will not corrode or rust. To ensure low permeability, Viton sealant was applied to the sheets before being driven. The Viton sealant used was a proprietary product designed and developed by Wolf Remediation Ltd. Viton is the only sealant compatible with such high levels of hydrocarbons.

Wolf Remediation Ltd was able to provide data acquisitions on all the sheets driven with their Sure Seal Technology electronic monitoring system. This gave assurance that each of the FRP composite sheet piling joints were joined, and no un-zippering had occurred on the driving installation. The system also monitors that the sealant stays in position during installation.


The durability of fiberglaComposite Sheet Piling at Kinder Morganss composite sheet piles in water was studied through the specimens cut from flanges and webs of pultruded sheet pile sections. The experiments were performed to evaluate the water absorption at ambient temperature in complete immersion, and its effect on the tensile properties and the freeze-thaw resistance of the saturated composites. The high temperature at 70°C was used to accelerate the tests, and 100°C (boiling water) to verify the state of saturation.

Portland Gallery

Wolf Remediation Ltd composite sheet pile solutions offer an alternative to conventional materials and have a wide range of uses. With a high strength to low weight ratio, composite sheet piling affords easier handling, more economical shipping, lower maintenance on installation, and a longer life-span. An environmentally sensitive solution with no compromise.