Although asbestos is no longer used, it is still found in many buildings. The City of Winnipeg requires a predemolition asbestos audit be performed prior to their issuing a demolition permit. A predemolition audit is performed by going through a building and locating building materials that may potentially contain asbestos. Each location is marked with a unique tracking number and a sample is collected for analysis at an accredited laboratory. A complete report is issued on the findings.