Summary of Judgment — High Court (Planning & Environment)

Factual and Procedural Background

This judgment, delivered by Judge Humphreys, concerns an application by the Applicant for judicial review of a decision of the Respondent dated 26 January 2023 refusing planning permission for a large-scale waste recovery and recycling facility on rural lands at The City. The proposed development involved a processing building, ancillary administration building, vehicular access off The Road, internal access road with weighbridges, an ESB substation, fuel and underground tanks, drainage, car and bicycle parking, photovoltaic panels, security cameras, lighting, boundary works and associated landscaping. An Environmental Impact Assessment Report (EIAR) and Natura Impact Statement (NIS) were prepared; the development would require an industrial emissions licence from Agency A.

The Applicant made the planning application to the Notice Party on 29 April 2021. The Notice Party's planning department recommended refusal; the Notice Party issued a refusal dated 18 June 2021. The Applicant appealed to the Respondent. The Respondent's inspector produced a report (8 November 2022) recommending refusal. The Respondent issued an order refusing permission on 26 January 2023 for stated reasons relating to (inter alia) the development plan, potential air quality and noise impacts, and potential impacts on groundwater and water bodies.

The Applicant commenced proceedings for judicial review on 22 March 2023. The case was admitted to the Planning & Environment Court List after interlocutory directions and an amended statement of grounds. The Respondent filed opposition. The matter proceeded through a series of mentions and directions and was heard on 23 October 2025. Judgment was reserved and a draft circulated to the parties on 7 November 2025. The judgment was delivered on 19 November 2025.

Legal Issues Presented

1. Whether Reason No. 2 of the Respondent's decision—that the proposed development "would have the potential to seriously injure the residential amenities" of nearby properties by reason of air quality and noise effects—had any basis in law or fact, or was an unlawful or irrational evaluative conclusion.
2. Whether Reason No. 3 of the Respondent's decision—that the proposed development would have the potential to affect the hydrological regime, thereby negatively affecting water supply and public health—had any basis in law or fact, or was an unlawful or irrational evaluative conclusion.
3. Whether Reason No. 1 of the Respondent's decision incorrectly characterised the lands as "zoned" (or otherwise misapplied the County Development Plan) such that the refusal on material contravention grounds was unlawful.
4. Whether late affidavit evidence filed shortly before the hearing (an affidavit dated 3 October 2025) was admissible given procedural timetabling and the limited scope of replying evidence.

Arguments of the Parties

Applicant's Arguments

• The Applicant challenged Reasons 2 and 3 as having no basis in law or fact, arguing the EIAR and specialist reports demonstrated that air quality, odour, noise and groundwater impacts would not be materially affected.
• The Applicant contended the lands were "white lands" (i.e. unzoned rural lands) and that the Respondent erred in treating the lands as being zoned or otherwise subject to development plan provisions relied upon in Reason No. 1.
• The Applicant attempted to rely on a late affidavit (dated 3 October 2025) to support various factual and technical points concerning the proposal and to critique the inspector's and Respondent's reasoning.

Respondent's Arguments

• The Respondent submitted that it was entitled to assess and not simply accept the EIAR; the Respondent and its inspector had lawfully exercised evaluative planning judgment and concluded the proposal was inappropriate for the unserviced rural site in close proximity to residences.
• The Respondent emphasised (consistent with the EIAR and inspector's report) the scale, nature, odour characteristics (described in Agency A guidance as "most offensive"), operational hours, HGV traffic and unserviced nature of the site as factors supporting refusal.
• The Respondent argued the late affidavit evidence was inadmissible because it was not proper replying evidence, was filed very late without satisfactory explanation, and would unfairly prejudice the Respondent by introducing matters that could and should have been put forward earlier.
• The Respondent argued that the development plan provisions relied on (Policy Objectives EE55 and EE59) involve evaluative judgment about suitability and scale in rural areas and that the Respondent lawfully concluded the proposal materially contravened those policy objectives in context.

Table of Precedents Cited

Precedent	Rule or Principle Cited For	Application by the Court
Plaintiff v Respondent [2025] IEHC 521	Cited as part of recent syntheses of general principles for judicial review in planning/environment matters.	Used among a group of recent authorities to frame applicable principles for review in this case.
Plaintiff v Respondent [2025] IEHC 405	Cited as part of recent syntheses of general principles for judicial review.	Referred to as part of the body of recent authorities informing the standard of review.
Plaintiff v Respondent [2025] IEHC 541	Cited as part of recent syntheses of general principles for judicial review.	Referred to in the Court's overview of established principles governing challenges to planning decisions.
Plaintiff v Respondent [2025] IEHC 407	Cited as part of recent syntheses of general principles for judicial review.	Included in the list of recent authorities relied on by the Respondent to support general propositions.
M.E. v Tribunal [2008] IEHC 192	Evaluative conclusions and weight of evidence are for the decision-taker.	Applied to affirm that evaluative judgements are primarily for the Respondent's consideration.
Plaintiff v Respondent [2024] IESC 13	Evaluative planning judgements involving significant planning judgment are reviewable on an irrationality standard.	Used to support the proposition that the Respondent's evaluative conclusions are subject to unreasonableness review.
Graymount House Action Group v Respondent [2024] IEHC 327	Example of evaluative judgement and review; leave to appeal noted.	Referenced to illustrate applicable standards and that evaluative findings attract an irrationality standard.
O'Sullivan v The Hospital [2023] IESC 11	Quoted regarding draft judgment procedure and limits on using draft judgments to reargue substance.	Relied on to explain the court's draft-judgment circulation practice and permissible scope of comments.
O'Sullivan v The University [2017] IESC 75	Commentary on procedural expectations and fairness in judicial processes.	Quoted to caution against treating interlocutory procedures as giving rise to extensive new procedural rights.
M.R. (Bangladesh) v Tribunal [2020] IEHC 41	Decision should be read in a way that makes sense; avoid the most erroneous reading if a valid one is available.	Applied to read the Respondent's decision in a valid sense despite semantically imperfect wording.
Rostas v The State [2021] IEHC 60	Discusses reading decisions sensibly; cited alongside other authorities.	Used to support the proposition that an available valid reading should be preferred.
St. Margaret's Recycling v Respondent [2024] IEHC 94	Decision-reading principles and judicial review approach in planning cases.	Part of the authorities cited to emphasise sensible reading of decisions.
Mulloy v Respondent [2024] IEHC 86	Decision-reading principles in planning judicial review.	Referred to in the discussion of reading decisions in a way that makes sense.
Save Roscam Peninsula CLG v Respondent [2024] IEHC 335	Decision-reading and evaluative judgment context.	Included in body of authorities supporting the Court's approach to reviewing planning judgements.
E.M. v Minister [2024] IESC 3	Authority on construction and reading of decisions; cited for decision-reading principle.	Referred to support preferring a valid reading of administrative decisions.
R v Crischuk 2010 BCSC 716 (affd. 2010 BCCA 391)	Onus of proof in environmental assessment challenges lies with the applicant; need for evidence to show defect.	Applied to confirm that the Applicant bore the burden of adducing evidence (normally expert) to show EIAR/AA defects.
Reid v Respondent (No.1) [2021] IEHC 230	Onus of proof in environmental assessment challenges.	Used to reinforce the proposition that inadequacy in EIA/AA must be shown by evidence.
An Taisce v Respondent & Ors [2022] IESC 8	Onus on applicant to show EIA/AA defects by admissible evidence.	Applied to the requirement that applicants must establish defects by evidence.
Carrownagowan Concern Group v Respondent [2024] IEHC 300	Onus to adduce evidence in environmental assessment challenges; noted leave to appeal refused.	Cited as supporting authority for the burden on applicants in EIA/AA challenges.
Salmon Watch et al. v Respondent [2024] IEHC 421	Onus of proof and evidential requirements in environmental contexts.	Referenced in the Court's survey of authorities on evidential burden.
Minoa Ltd v Respondent [2024] IEHC 704	Onus to adduce evidence in EIA/AA challenges.	Included among authorities emphasising applicant's evidential burden.
Nagle View Turbine Aware Group v Respondent [2024] IEHC 603	Scientific and factual shortcomings in EIA/AA must be established by the applicant.	Applied to the requirement that the Applicant show such shortcomings by admissible evidence.
Eco Advocacy v Respondent [2025] IESCDET 74	Example where applicant failed to displace lawful conclusion on appropriate assessment due to lack of evidence.	Used to illustrate consequences where applicant fails to adduce sufficient evidence on judicial review.
O'Doherty & Waters v Minister [2022] IESC 32	General law on burden and judicial review principles.	Referred to in support of the proposition on onus and proof.
Donegal County Council v Planree [2024] IECA 300	Onus and evidential principles in planning/environment appeals.	Referenced for analogous application of evidential onus.
Massey v Respondent (No.2) [2025] IEHC 206	Evidential onus in planning judicial review context.	Included among authorities on the applicant's burden of proof.
Kennedy v Respondent [2024] IEHC 570	Onus to demonstrate lack of expertise; criticisms of inspector/board must be pleaded and evidenced.	Applied to note that the Applicant failed to show lack of available expertise or to take interlocutory steps to prove it.
Roache v Respondent [2024] IEHC 311	Onus and evidential standards in environmental assessments.	Referenced in the Court's compilation of relevant authorities.
Ryanair DAC v Respondent [2025] IEHC 74	Authorities on burden and challenge standards.	Cited among recent authorities addressing review standards.
Maye v Borough Council [2007] IEHC 146	Material contravention principles in development plans (specificity v aspirational objectives).	Applied to explain that some plan objectives allow limited evaluation, others create a zone of evaluative judgment.
Leech v Respondent [2024] IEHC 599	Context on materiality of contraventions of a plan.	Referred to when discussing the appropriate threshold for material contravention.
Freeney v Respondent [2024] IEHC 427 and [2025] IEHC 36	Illustration that in particular cases s.37(2)(b) may not be engaged; context-specific.	Distinguished and used to show no inconsistency with the Court's approach to materiality here.
Sliabh Luachra v Respondent [2019] IEHC 888	Affidavit evidence may be excluded for excessive and unexplained delay causing prejudice.	Applied to exclude the Applicant's late affidavit for lack of satisfactory justification and prejudice.
Fahybeg Windfarm Opposition Group v Respondent [2025] IEHC 310	Onus of proof and prejudice from late evidence in leave applications.	Used to support exclusion of late evidence and to emphasise applicants' responsibility to present evidence in time.
Save the South Leinster Way v Respondent (No.2) [2025] IEHC 541	Criteria for declaratory relief in planning context.	Referenced to explain why declaratory relief sought by Applicant was not appropriate.

Court's Reasoning and Analysis

The Court conducted a structured analysis under the identified core grounds and some procedural issues. The Court's key analytical steps, in the order reflected in the judgment, were:

1. Procedural admissibility of late affidavit evidence: The Court concluded the Applicant's affidavit of 3 October 2025 was inadmissible. The affidavit was filed late (shortly before a fixed trial date after more than two years of proceedings), was not confined to proper replying matters, and contained material that ought to have been part of the Applicant's case from the outset. The Court relied on authorities allowing exclusion of belated affidavits where delay is unexplained and prejudicial, and emphasised the limited scope of replying affidavits under the Rules.
2. Nature of evaluative conclusions and standard of review: The Court reiterated settled authorities that evaluative planning judgments—particularly those involving planning policy application, suitability, scale and siting—are quintessentially for the decision-taker and are reviewable on an irrationality/unreasonableness standard rather than de novo. The Court emphasised that a decision should be read in a way that makes sense where a valid reading is available; semantic imperfections do not invalidate a decision if a sensible reading exists.
3. Onus of proof in challenges to EIA/AA conclusions: The Court reiterated that the onus lies on the applicant to establish by admissible evidence (normally expert evidence) that an EIAR or the decision-maker's assessment was defective or created reasonable doubt. Absent such evidence, judicial review cannot supplant the decision-maker's evaluative judgment.
4. Interpretation of the EIA Directive and concept of "potential" impacts: The Court examined the Directive text cited in the EIAR context (Annex III and Article 7(4)) and concluded that the Directive itself contemplates assessment of potential impacts, probability, possibility of mitigation and unmitigated impacts. The Applicant's contention that "potential" impacts were an inappropriate basis for refusal was rejected as a misreading of the Directive.
5. Application to Reason No. 2 (air quality/odour and noise): The Court acknowledged that the EIAR modelled odour and noise and included conclusions that impacts would be within guidance in the EIAR. However, the Respondent and inspector had carried out their own assessment of the EIAR and concluded that, given the nature of the proposed facility (scale, odour characteristics as described in Agency A guidance, proximity to residences, hours of operation and unserviced site), there was a potential for unacceptable impacts. The Court held that this evaluative conclusion fell within the Respondent's zone of planning judgment and that the Applicant had not discharged the onus to show that conclusion was unlawful or irrational.
6. Application to Reason No. 3 (hydrogeology/water impacts): The Court noted the EIAR's treatment of abstraction and recharge and the inspector's specific observations as to the absence of a detailed groundwater risk assessment and lack of analysis of off-site private wells. The Court concluded that assessing abstraction and groundwater impact involved evaluative judgment for the Respondent and that there was material on which the Respondent could reasonably rely. The Applicant had not shown that the Respondent's evaluation was unlawful.
7. Application to Reason No. 1 (development plan / material contravention): The Court accepted the Applicant's semantic point that the word "zoned" was not the most accurate description of the plan provisions relied upon. Nevertheless, the Court held that the development plan provisions (Policy Objectives EE55 and EE59) are of a general nature creating a zone of evaluative judgment regarding suitability and scale in rural areas. The Court explained that "material contravention" is not confined to narrowly defined zoning objectives; it can extend to contraventions of the plan more generally where the contravention is more than de minimis. The Court concluded the Respondent lawfully exercised planning judgment in finding a material contravention and the Applicant had not shown that judgment to be irrational.
8. Overall synthesis: The Court summarised settled points: (a) some plan wording is highly specific and easy to apply, whereas other objectives are general and afford decision-makers evaluative latitude; (b) potential and unmitigated impacts must be considered in EIA processes; (c) the onus lies on applicants to demonstrate unlawful evaluative conclusions by evidence; and (d) where a valid reading of a decision exists, a court should adopt it. Applying those principles, the Court found that the Respondent's conclusions on the material issues lay within its evaluative judgment and that the Applicant had not established legal error, irrationality or insufficient material before the Respondent.

Holding and Implications

Holding: The Court ordered that the proceedings be dismissed. The substantive reliefs sought by the Applicant were refused.

Implications:

• The direct effect is that the Respondent's decision refusing permission for the proposed waste recovery and recycling facility on the lands at The City stands.
• The Applicant's requests for certiorari quashing Reasons No. 2 and No. 3, and for declaratory relief regarding zoning, were not granted because the Court found the Respondent's evaluative judgments to be within its zone of discretion and not shown to be unlawful.
• The Court excluded the late affidavit evidence for procedural and fairness reasons; this reinforces the requirement that applicants marshal necessary expert evidence at an appropriate stage and not file substantial new evidentiary material at the last moment as reply.
• The judgment applies settled principles rather than establishing novel precedent; the Court expressly relied on and applied existing authorities on evaluative judgment, the onus of proof in EIA challenges, the proper reading of decisions and the scope of material contravention in development plans.

Order (as recorded in the judgment):

1. The proceedings are dismissed.
2. Unless any party applies otherwise within seven days by written legal submission, the order is to be perfected on the basis of no order as to costs (including reserved costs).
3. Perfection of the substantive provisions is postponed pending any post-judgment applications; a date was set to confirm the foregoing.

Note on anonymization: This summary has replaced names of persons, localities and named public bodies with neutral placeholders (for example "Applicant", "Respondent", "Notice Party", "Agency A", "The City", "The Road", "The Motorway", and "Judge [Last Name]") to comply with the anonymization requirement, while otherwise reflecting the content of the provided opinion only.