(ALEXANDRIA)—An ATV accident Thursday afternoon near Alexandria injures two Clark County teens. The Missouri Highway Patrol says an ATV operated on private property by 16 year old Westin Schorr of Alexandria overturned on a levee. Schorr sustained minor injuries. He was taken to Keokuk Area Hospital for treatment.  A passenger,15-year-old Dannieka Bertelli, sustained serious injuries. Bertelli was taken to University of Iowa Hospital in Iowa City.