Actor Jeremy Renner sustained extensive injuries after a snowplow ran over one of his legs, according to a report Monday. Renner suffered significant blood loss in the incident Sunday in Nevada, with a doctor who lives nearby applying a tourniquet before the actor was airlifted to a hospital, a neighbor told TMZ. The reported details come a day after a representative for Renner, 51, confirmed he was hospitalized in “critical but stable condition” following an “accident while plowing snow.” “His family is with him and he is receiving excellent care,” the rep said. The incident reportedly occurr…