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In order to ease the terrible traffic congestion in Vancouver , it is necessary to build the Golden Ears Bridge , the largest suspension bridge in British Columbia . Faced with an opening date in late 2009, the engineers were stumped by a problem: how to scarify the bridge deck and the upturns (concrete safety barriers), so that the final deck surface would adhere to the structure. And because the bridge was suspended over the Frazier River , no materials could be used that would fall into it and harm the environment.
The contractor, Pro Surface Removal, tried steel shot blasting, but it could only scarify the horizontal deck surface, not the vertical upturns. In addition, shot blasting would only produce at a rate of 20 feet per hour. They could not use sand blasting, because sand contains silica - a hazardous material - and the extensive containment would be a budget buster.
The Farrow System™ was tested, accepted, and Pro Surface Removal's operators were trained to use it in less than 2 hours. The Farrow System™ scarified the concrete to specification at the rate of 100 feet per hour, or 5 times faster than steel shot! And because the environmentally safe media, Farrow Green Clean™, is chemical and silica free and totally inert, no tenting or trunking was required whatsoever. The end result was scarifying was completed on schedule and under budget, and Vancouver is closer to finally solving its traffic problems!
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