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The survey, first presented in December to the city’s transportation and transit committee, indicated the number of people using the bike lanes downtown has increased since being installed last year.

It also found that more women were using the tracks, that it barely caused delays for commuters and that complaints to the city’s 311 line significantly decreased since the network opened last summer.

At both the committee and council meetings, Chu maintained an unnamed University of Calgary professor informed him the city’s evaluation of the cycle tracks are biased and don’t pass muster.

While city staff have asked for more information in the emails, Chu said he’s under no obligation to release the exchange without the consent of the professor.

Chu, who apologized for his remark in council chambers Monday, disputes labelling the entire report “garbage” and maintains he was only referencing a footnote in the document about an Ipsos Reid survey commissioned by the city.

“I didn’t say anything bad, did I? I never called anybody (garbage),” Chu said in an interview. “I called a line (garbage) because I’m passionate about what I do. I listen to people. That’s what people told me. A lot of people said that.”

In his memo, Logan maintains the results of the survey, which polled 515 Calgarians by telephone, is statistically valid despite the modest sample size and 4.5 per cent margin of error.

At last month’s committee meeting, Jeromy Farkas, a research fellow at the Manning Foundation, said he was initially dubious about the city’s data collection, but gave administration high praise when the report was released.