This excerpt taken from the ORA DEF 14A filed Mar 23, 2009.
As required by the NYSE rules, the non-management directors of the Company meet in executive sessions of the Board of Directors without management at regular intervals and at each regular meeting of the Audit Committee, Compensation Committee, and Nominating and Corporate Governance Committee, and as otherwise scheduled from time to time. The Chair of the Audit Committee presides at the executive sessions of the non-management directors. In addition, the Chair of the Audit Committee presides at the executive sessions of the Audit Committee. One of the non-executive members of the Compensation Committee and of the Nominating and Corporate Governance Committee presides at each executive session of such committees.