Hon DAVID PARKER: The cost-benefit analysis, which is very, very thorough and has been peer-reviewed, says that while many important benefits can't be quantified, those that were quantified have an aggregate annual value of $359 million per annum up to 2050—primarily from improved swimmability reducing health risks, ecosystem services, water storage as a consequence of wetland protection, and the like. The estimated costs are approximately $166 million per annum, which means that, overall, the net benefit is $193 million per annum over 30 years, excluding brand benefits, which can't be quantified but are positive.