SunTrust Banks Inc., Georgia's biggest lender, agreed to a $65 million settlement with Freddie Mac covering refunds for faulty mortgages. The accord covers about 312,000 loans made from 2000 to 2008, Atlanta-based SunTrust said today in a statement. The deal includes a one-time cash payment of $40 million to Freddie Mac and $25 million in credits for prior repurchases, the bank said. SunTrust said it expects the agreement to trigger a $15 million mortgage provision expense in the third quarter.