1 The applicants seek leave pursuant to the Commercial Arbitration Act 1986 ("the Act"), s38 to appeal the award of an arbitrator on a question of law. The arbitrator was called upon to arbitrate a dispute between the applicants, as principals of a project involving the construction of a sewer outfall pipe into the River Derwent at Prince of Wales Bay, and the respondent, which was the contractor. The respondent contended that it was entitled to claim compensation for inter alia latent conditions encountered during piling installation. The arbitrator, Mr Hurd, of Hobart was appointed jointly by the parties, the respondent's solicitors asserting in a letter to the Australian Commercial Dispute Centre, a copy of which was sent to the applicants' solicitors that "we understand Mr Hurd has extensive experience in pile driving which is the main aspect of Tacon's claim". The applicants' solicitors, in a letter some weeks later, agreed to his appointment and said, "obviously, most of the issues which will arise in this case are technical matters, which Mr Hurd will be competent to decide." After a preliminary conference with the arbitrator, it was agreed that written submissions would be provided in place of a formal hearing and that the arbitrator's decision would be an interim one addressing liability only. It was also agreed that if the arbitrator required a site inspection, both parties would be advised and a visit would be arranged by the applicants.