Clamshell plastic packaging collected by the city’s blue cart program is stored at a Calgary landfill. City of Calgary A Calgary recycling firm says it could immediately help the city clear its backlog of plastic that’s cost taxpayers $500,000 to store. The company, Eco-Growth, said it could ensure the clamshell containers — now stored in at least 100 semi-trailer units at a southeast landfill site — are turned into 3-D created products ranging from travel trailers and park benches to playground structures. But city officials say they’re uncertain about the firm’s ability to process the plastic or handle the volume that now amounts to at least 1,600 tonnes. Clamshell packaging, commonly used as containers for baked goods and produce, is notoriously difficult to process, due to contamination from labelling and adhesives. The city says a West Coast recycler has shown interest in processing the packaging, though there has been no agreement. But Eco-Growth CEO Kim Caron said his company has no doubt about its ability to reduce the plastic through a process of dehydration and then have it used in 3-D printed products with the help of a Saskatoon-based partner. “We already have...