A new retail establishment may suit Pittsburgh's North Side to a T. Arnold's Tea Shop and Café, located at a 2,400-square-foot double storefront at 502 East Ohio Street, scheduled its grand opening for Thursday. It features 30 varieties of loose leaf tea, merchandise, a seasonal menu and afternoon and high tea service. Owner Verna Arnold is a retired school teacher who was inspired from visiting tea shops in her worldwide travels. Arnold's is open from 7:30 a.m. to 7:30 p.m. weekdays and from…