[15] As may be noted, that review involves the adjustment of the originally agreed values in accordance with movements in the CPI and "other relevant economic indicators". Mr Gotterson acknowledged that the process under Schedule 5 is somewhat broader, but nevertheless submitted that the determination of value under that schedule remained susceptible of arbitral determination, essentially because of the specification of objective criteria in cl 1.2 of that Schedule. He referred to the analysis of P McMurdo J in Xstrata Queensland Ltd v Santos Limited and Ors [2005] QSC 323. Additionally, he relied on the decision of the Judicial Committee of the Privy Council in The Queensland Electricity Generating Board v New Hope Collieries Pty Ltd (1989) 1 Lloyd's Law Reports 205, 209, for the submission that the arbitrator would be obliged to set a "fair" price. Should the arbitrator disagree with the respondent's determination, then, he submitted, the arbitrator should substitute his or her own assessment. He pointed to the absence from the contract of any power in the arbitrator to remit the matter to the respondent for further determination.