MSE WALLS & SLOPES PROJECT PROFILE

Earl Bales Park Area – Emergency Vehicle Access

SierraScape Retaining Wall The pond is intended to improve water quality System provides a cost effective, in the West , reduce stream erosion, aesthetic solution. and to provide a water supply source for snow making and irrigation for the Don Valley Golf Course. LOCATION: , Challenge PRODUCT: At the northwest corner of the stormwater SierraScape® management pond, the client needed to develop PROJECT PARTNERS: an access road for maintenance and emergency Owner vehicles. The scope of work for this access road City of Toronto included the construction of a retaining wall that Consultant would complement the existing natural setting MMM Group without compromising the technical integrity of Contractor the wall. Metric Contracting Services Corporation Completion Date Solution August 2011 Nilex recommended the SierraScape Retaining Wall system as an alternative to the conventional A new stormwater management pond was block wall system. The positive mechanical developed in the valley lands of the West Don connection of this system better withstands River, east of the existing . The differential settlement, and virtually eliminates pond, which is 3.2 ha and two to three m in surficial stability problems often associated depth, is considered to be the largest one with other alternatives. The need for a concrete in Ontario and ranks as one of the largest in leveling pad was eliminated with the installation Canada. of this system. Earl Bales Park Area – Emergency Vehicle Access

Installation “The SierraScape system offered an The unique wire forms of the SierraScape system advantage with respect to differential ease installation and help speed up construction settlement, the stone face hides any time. A four man construction crew was able horizontal or vertical line joints, block wall to install 80 m² of wall in less than a week with systems are not as forgiving.” basic construction equipment and minimal – Marco Parmegiani, P.Eng excavation. No specialized training was required Metric Contracting Services Corporation to install the system, however Nilex provided on-site installation assistance to the construction The Nilex Advantage crew. Nilex is committed to unearthing better results. Whether it’s for a civil, resource or environmental project, we offer the latest engineered and technically superior materials and techniques to save our customers time and money, and minimize the need to move or remove earth, and reduce the need for granular materials. With over 35 years experience, a long-standing commitment to the environment and highly qualified staff, Nilex delivers the products and technologies that give clients an economic advantage with environmental benefit.

Results The SierraScape system provided a cost effective, aesthetically pleasing solution for the client. The facing flexibility and connection capabilities of SierraScape help resist differential settlement, if any settlement occurs; the natural stone-face virtually eliminates both horizontal and vertical joint lines. In addition, the natural stone face blends in with the natural surroundings and existing armour stone walls on the site.

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Rev. 10/2012