IPART is responsible for assessing RailCorp’s compliance with the pricing principles set out in the NSW Rail Access Undertaking when setting access prices. In accordance with the Undertaking, IPART reviews the rate of return and remaining mine life of the Hunter Valley coal mines that utilise RailCorp’s Hunter Valley Coal Network assets every 5 years to ensure that access prices reflect the efficient costs of providing the network.IPART has completed its review of the rate of return and remaining mine life that will apply to RailCorp’s sectors of the Hunter Valley Coal Network for 5 years from 1 July 2014.