SUPERIOR CONDITIONS 21.01 All existing benefits, rights, privileges, practices, terms or conditions of employment which may be considered to be superior to those contained herein and which are set out in Appendix 4 are specifically retained by this Agreement unless otherwise agreed by the local parties. The parties agree to remove from Appendix 4 those superior conditions which no longer have application. Where the parties cannot agree on whether a superior condition continues to have application, the issue will be reduced to a grievance and referred to arbitration. 21.02 The Union and the Participating Hospitals agree to establish a committee consisting of two (2) representatives of the Union and two (2) representatives of the Participating Hospitals to review the superior conditions appendices in each of the participating hospitals. This committee will report to their respective negotiating committees prior to the next round of central negotiations.