A high-profile nonprofit recently beset by turbulence begins 2013 with a newly configured executive board responsible for finding a new leader. The Nevada County Economic Resource Council convened its first meeting of 2013 with Robert Bergman, a Nevada City-based attorney and member of the city council, as the new chairman of the executive committee board. Bergman will replace Kimberly Parker, who represents the Sierra Nevada Hospital Foundation on the board. Parker presided over a tumultuous 2012 for the ERC, which saw the executive committee hire a new executive director Jon Blinder and secure a much-coveted contract from Nevada County to …