| http://www.w3.org/ns/prov#value | - The reduced environmental impact of the naturally derived material that is manufactured in Waterloo fits well with the university's commitment to sustainability, officials said.Water runoff from snowmelt eventually ends up in our storm drains and natural waterways, taking along with it any sand, salt and other materials it may have picked up along the way, said Liz Christiansen, director of the
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