With only two months to go before the opening of its new concert hall, the Orange County (CA) Performing Arts Center is still frantically raising the money it needs to complete construction and manage the facility. The effort got a big boost this week with the announcement of a $5 million gift by a longtime OCPAC board member’s family. The center has thus far raised $138 million for the concert hall since 1999, on a total goal of $200 million.