Shell’s petrochemical refinery, a massive complex that sits along the Ohio River about 30 mies outside of Pittsburgh, will pay nearly $10 million for violations in air emission limits that occurred in the first months of operations at the plant which opened in November. The company suspended production in March for repairs, but planned to restart operations yesterday. When fully operational, the ethane cracker plant will produce 3.5 billion pounds of plastic a year by converting ethane, a component of natural gas, into polyethylene, a common plastic.