Finding on Ground 5
30 It is clear from reading the judgment that [87] is obiter and does not form part of the ratio of the Commissioners' decision. The Commissioners had already concluded at [86] that development consent ought not be granted. It therefore has no binding legal effect on any future decision made by this Court. It is unlike the situation in Bonim Stanmore v Marrickville Council [2007] NSWLEC 286, where the finding found to be in error was "crucial and determinative" in the Commissioners' decision (nor is there an error of law as was found in that case).
31 Paragraph [87] reflects the Commissioners' views of the evidence and their findings about the BGHF on the site. It should not be criticised as an unnecessary and improper imposition of the Commissioners' personal views. It is responsive to the issues and the evidence before the Commissioners, as identified in the Second Respondent's written submissions at [23]-[25] and in the table at [26]. In making these findings I have adopted the submissions made by the Council and the Second Respondent and do not need to set these out separately in this judgment.
32 It also reflects basic ecological knowledge which those appearing before the Court as legal and expert representatives should be familiar with and contains no "surprises" on my reading. Rather, the matters are self-evident in the context of ecological issues concerning a critically endangered vegetation population. The matters referred to are matters which commissioners of this Court are familiar with.
33 In relation to the arguments raised by the Applicant for both grounds 4 and 5, reliance was placed by the Applicant's counsel on Brewarranna Pty Limited v Commissioner of Highways (No 2) (1973) 6 SASR 540 at 544 where the role of the judge in fact finding involving expert opinion was considered. Wells J stated:
I have always taken the view, and shall continue to do so unless directed by a superior Court to do otherwise, that the creation of a special Division in a Court to deal with a particular class of case is not intended to turn the presiding judge into an independent expert in the very field in which testimony will be tendered to him that he will be called on to evaluate. It would never occur to a trial judge who, for example, had heard many cases in which expert medical knowledge had been tendered, to choose between the conflicting testimony of two medical witnesses by applying to it his own medical knowledge. That knowledge would, no doubt, have been of inestimable value in understanding the testimony; in suggesting questions; in comparing one set of opinions with another. But it would be quite contrary to principle, I apprehend, for the judge to bring a third set of opinions into the arena, and to supplement or condemn testimony properly adduced before him in reliance on his own theoretical grasp of principles and precepts of medicine.
34 That passage does not reflect the role of expert commissioners in this Court sitting in a merit appeal where they are expected to exercise their professional judgment in undertaking a merits assessment. This is a specialist court established by statute to consider a wide range of environmental legal and merit matters. The commissioners appointed under s 12 of the Court Act are required to have expertise in areas relevant to the Court. Ecological/environmental science expertise is one of those areas. Commissioners sit as the Court when exercising their functions in Class 1 merit appeal proceedings under s 33(1) of the Court Act. Under s 38(2) of the Court Act the rules of evidence are dispensed with and allow commissioners to inform themselves as they see fit, which includes drawing on their own experience. Under s 39(2) the commissioners "stand in the shoes" of the council as the administrative decision-maker when making their decisions. Such bodies have their own knowledge and expertise which they apply. The quotation relied on above by the Applicant, which is from an older decision of a single judge exercising different functions in another jurisdiction to those of this Court in Class 1 proceedings, is not relevant to the task commissioners undertake in Class 1 proceedings.
35 In this case one of the Commissioners has extensive academic and practical experience as an ecologist/environmental scientist. He is expected to apply that expertise in the cases that he hears, that being one of the reasons for his appointment as a commissioner under the Court Act. It is not appropriate to describe what the Commissioners did as simply applying their personal opinions in par [87], as the Applicant sought to characterise their evidence. They have done what is required of them, namely formed a view based on their own expertise and the expert material and opinion before them. They are not required to adopt that opinion. The matters the Applicant complained of are within the scope of the issues before the Commissioners and generally canvassed in the evidence heard by them. No error of law is disclosed in the judgment. The Applicant fails on this ground.