Update 30 September 2019 the judgment was quoted heavily in the Independent Planning Commission (IPC)’s refusal of a permit for the Bylong Valley Coal Mine – a gateway with more documentary links is here.
Update 8 May 2019 it was announced that Gloucester Resources will not be appealing hence the judgment stands.
Update 1 April 2019 Australian Coal Alliance Incorporated v Wyong Coal Pty Ltd  NSWLEC 31 was held slightly later (review of the case here) and is a good illustration of the difference between judicial review and merits review.
Gloucester Resources v Minister for planning  NSWLEC 7 is perfect material for my international environmental law classes at Monash come next (Australian) winter (September). Proposition is a permit for an open cut coal mine. Consent was refused on the basis of 3 reasons: the creation and operation of an open cut coal mine in the proposed location is in direct contravention of each zone’s planning objectives; the residual visual impact of the mine would be significant throughout all stages of the Project; and the Project is not in the public interest. Refusal was evidently appealed.
Preston CJ, the Chief Judge of the Land and Environment Court of New South Wales delivered serious support for an internationally engaged Australian (New South Wales) climate law approach. Although he did cite the Paris Agreement (439 ff: providing context to Australia and NSW’s future challenges; and including an interesting discussion on the balanced measures that might be needed to achieve Australia’s Paris Goals, refuted at 534 ff) and the UNFCCC, he did not need Paris, Kyoto, UNFCCC or anything else ‘international’ to do so. He applied the NSW principle of ‘ecologically sustainable development’ (ESD; a notion which often rings tautologically to my ears).
A blog post cannot do justice to a 700 para judgment – Note the following paras:
At 694 ‘Acceptability of proposed development of natural resource depends not on location of natural resource but on sustainability. One of the ESD principles is sustainable use– exploiting natural resources in manner which is ‘sustainable’ ‘prudent’ ‘rational’ ‘wise’ ‘appropriate’
At 696 ‘In this case, exploitation of coal resource in Gloucester valley would not be sustainable use and would cause substantial environmental and social harm. The Project would have high visual impact over the life of the mine of about two decades. The Project would cause noise, air and light pollution that will contribute to adverse social impacts. Project will have significant negative social impacts; access to and use of infrastructure, services and facilities; culture; health and wellbeing; surroundings; and fears and aspirations…The Project will cause distributive inequity, both within the current generation and between the current and future generations.’
At 514: rejection of the relevance of the limited impact which the project will have on Australia’s GHG emissions overall, with reference to US (EPA v Massachusetts) and the Dutch Urgenda case.
No doubt appeal will follow – a case to watch.