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HomeMy WebLinkAbout2660018 - F.I. Received Doc. - Response to third party Submissions STR010/0001-#9436218v1 Response to RFI Question 9 Item 9 of the RFI requests: “An Taisce have commented on the proposed development and have raised several concerns under the headings of; i. Feedstocks ii. Methane Leakage iii. End- Use of Digestate iv. Fossil Gas Lock-in v. Wetland proximity vi. Traffic Impact Assessment The applicant is requested to review the full content of An Taisce’s submission and provide a detailed and comprehensive response to each issue raised.” Feedstocks An Taisce: The application is for a biogas facility to process up to 99,000 tonnes per annum of predominantly poultry manure (80,000-99,000 tonnes), cattle manure (2,000- 10,000 tonnes) and agri-food organic waste (9,000-19,000 tonnes). It must be determined that proposed feedstocks are sustainable in the flrst instance and that their production will not exacerbate ongoing issues with greenhouse gas emissions, water quality deterioration, etc. The emissions that contribute to the production of feedstocks must be considered as indirect impacts of the proposal as they can signiflcantly negatively impact biomethane’s overall contribution to climate mitigation. As producing sustainable energy is a key justiflcation used by the applicant in thi s case, assessing the indirect impacts of the feedstocks is crucial. It should be ensured that the proposal does not indirectly drive further poultry agriculture intensiflcation due to the consistent provision of feedstock given the cumulative ammonia air quality impacts, water quality impacts from run-off and biodiversity implications. Response The Applicant has reviewed the An Taisce submission in full. The response below addresses each of the matters identifled and should be read together with the revised suite of information submitted as part of this Further Information response. RECEIVED: 28/08/2026 STR010/0001-#9436218v1 References to the Proposed Development relate to the Renewable Biogas Plant and associated works for which permission is sought; where relevant, the wider Proposed Project includes the separately delivered Linear Gas Grid Connection for EIA and Appropriate Assessment purposes. The waste feedstocks proposed for use in the generation of renewable energy at the proposed development arise from agricultural and agri-food activities that are essential to food production. In County Monaghan alone, in excess of 250,000 tonnes of poultry manure is already generated annually1, signiflcantly exceeding the 80,000–99,000 tonnes per annum required by the proposed development. For clarity, the individual feedstock ranges are indicative and not additive; the total combined annual feedstock intake will not exceed 99,000 tonnes per annum. The Proposed Development does not require an expansion of poultry or other agricultural production. It is designed to treat materials already arising from the established agricultural and agri-food sector. While the proposed facility will receive feedstock generated by existing farming and agri- food operations, the Supreme Court's judgment in An Taisce (Kilkenny Cheese)2 conflrmed that separate upstream agricultural activities do not require assessment as indirect effects of a project where the alleged effects are too remote, contingent or speculative and are not an integral part of the proposed development. The feedstocks in question are by-products and waste materials arising from existing activities that will continue to be generated irrespective of whether the proposed biogas plant proceeds. Accordingly, the environmental effects associated with those activities are not effects of the proposed development itself. Furthermore, the activities that generate these materials are subject to oversight and regulation under separate statutory and regulatory regimes. The relevant competent authorities include Monaghan County Council, the Department of Agriculture, Food and the Marine (DAFM) and the Environmental Protection Agency (EPA). As such, these activities do not require assessment within the EIAR prepared for the proposed development. Stream BioEnergy will ensure that all feedstocks received at the plant and any materials produced from the anaerobic digestion process are managed in compliance with all relevant legislative and environmental requirements. Notwithstanding the above, the proposed development will provide a local solution to the management of existing poultry and cattle manure and other agri-food organic wastes produced in Co. Monaghan that will help to reduce greenhouse gas emissions and 1 Baseline Study Report on the Poultry Sector within Co. Monaghan, prepared by Fehily Timoney Consultants 2 An Taisce v An Bord Pleanála & Kilkenny Cheese, [2022] IESC 8 RECEIVED: 28/08/2026 STR010/0001-#9436218v1 improve water quality in local river and streams, rather than exacerbating any existing issues. The proposed facility will treat incoming waste materials in a more environmentally friendly manner compared to current management practices, with the plant producing safer and more environmentally stable and sustainable fertiliser products compared to the baseline impacts of using raw manures or artiflcial fertilisers. The main beneflts of the sustainable fertilisers that will be produced by Stream include: • Pasteurised in accordance with DAFM requirements, removing any potential biosecurity issues (i.e. salmonella, E. coli, botulism risk) associated with raw manures. • Fully tested with labelled nutrient values, enabling precise application rates by farmers in response to crop needs and reducing the pollution risks of inaccurate application. • Low carbon footprint to help meet food purchaser’s Scope 3 compliance targets. • Carbon content of Stream fertilisers binds the nutrients within them, hence enabling slow nutrient release and higher use efficiency leading to lower application rates. • Stream fertilisers will enable better nutrient uptake thereby resulting in improvements to soil and water quality, as well as reducing harm to biodiversity. Overall, sustainable fertilisers produced at the plant will help to reduce greenhouse gas emissions and improve water quality. In relation to the point on potential intensiflcation of the poultry sector, the plant will have capacity to treat less than 40% of the available poultry manure already being generated by the sector, therefore it will not indirectly lead to intensiflcation but will help to address an existing challenge. Methane Leakage The proposed plant will be a state-of-the-art development utilising Best Available Techniques (BAT), modern process control systems and robust engineering standards. The facility will operate in strict accordance with applicable environmental, health and safety legislation and will be regulated through an EPA Industrial Emissions Licence together with the relevant requirements of the Health and Safety Authority (HSA). These regulatory controls are speciflcally designed to protect both human health and the environment. In relation to potential methane leakage, the proposed facility has been designed on the principle of preventing fugitive emissions through enclosed process systems, engineered containment, continuous process monitoring, preventative maintenance and routine inspection. As outlined in the National Biomethane Strategy (2024), the Biomethane Working Group will develop best practice guidance for methane management across the biomethane RECEIVED: 28/08/2026 STR010/0001-#9436218v1 sector. Stream BioEnergy already places signiflcant emphasis on methane containment and will review its operating procedures as these national guidelines are published to ensure that operational practices continue to refiect industry best practice. The plant will incorporate a Supervisory Control and Data Acquisition (SCADA) system providing continuous real-time monitoring of key process parameters, including gas production, gas consumption and process performance. This allows operators to identify abnormal operating conditions at an early stage and initiate corrective actions before they develop into more signiflcant issues. However, methane management is not dependent solely on automated monitoring. The facility will operate under a comprehensive preventative maintenance and inspection programme speciflcally designed to minimise the potential for fugitive methane emissions. Routine operational inspections will include daily and weekly inspections of the complete gas handling system, including: • Digesters and gas-tight covers; • Gas storage domes; • Gas upgrading equipment; • Gas compressors and gas treatment equipment; • Gas dewatering systems; • Gas fiare equipment; • Over-pressure and under-pressure protection devices; • Gas pipework, valves and associated flttings; and • Gas seals, shaft seals and water locks. These inspections include documented checks for any evidence of gas leakage, unusual odours, abnormal operating conditions, damage, vibration, pressure anomalies or deterioration of gas handling infrastructure. Digester methane concentrations and hydrogen sulphide concentrations are also routinely recorded as part of the operational inspection regime. Automatic flxed gas detection equipment will be installed within areas where elevated gas concentrations could potentially occur. These detectors form part of the plant safety system and provide continuous monitoring, with alarms generated immediately should predetermined gas concentration thresholds be exceeded. The SCADA system provides continuous monitoring of plant performance and alerts operators to abnormal operating conditions requiring investigation and corrective action. Where inspections, gas monitoring or alarms identify any abnormal condition or evidence of leakage, established leak detection and repair (LDAR) procedures will be implemented. These procedures include immediate investigation of the affected RECEIVED: 28/08/2026 STR010/0001-#9436218v1 equipment, isolation of plant where necessary, repair or replacement of defective components, veriflcation that repairs have been successfully completed and recording of all inspections and corrective actions within the plant maintenance management system before equipment is returned to normal service. The maintenance strategy adopts a preventative rather than reactive approach. Critical gas handling infrastructure is subject to scheduled preventative maintenance, routine servicing and periodic inspection in accordance with manufacturer recommendations and site-speciflc maintenance procedures. Where critical equipment has been identifled as representing a higher operational risk, additional maintenance measures are implemented, including priority maintenance scheduling, retention of critical spare parts on site, provision of bypass arrangements where appropriate and alternative operating conflgurations to minimise the likelihood of equipment failure. Speciflc measures identifled within the maintenance strategy include: • Regular inspection and servicing of the gas dewatering system together with spare pumps, sensors and contingency arrangements to maintain gas management; • Weekly operational testing of the emergency gas fiare, together with annual inspection and testing by the equipment manufacturer or authorised service agent; • Routine inspection of gas storage infrastructure, gas-tight covers, pressure relief systems and associated pipework as part of the plant's daily and weekly preventative maintenance inspections; and • Routine inspection of agitator shaft seals, water locks, over-pressure and under- pressure valves, ventilation systems and gas pipework to verify the continued integrity of the gas containment system. The facility will also implement documented operational procedures governing methane management, including routine operator inspections, preventative maintenance, gas monitoring, leak detection, emergency response, equipment isolation where required, maintenance recording and veriflcation that repairs have been successfully completed prior to recommissioning equipment. Overall, methane containment will be actively managed through multiple independent layers of protection comprising engineered containment, continuous process monitoring, automatic gas detection, routine preventative maintenance, documented leak detection and repair procedures, scheduled inspection of all gas handling infrastructure and ongoing regulatory oversight by the EPA and the Health and Safety Authority. Accordingly, the Proposed Development incorporates multiple independent layers of engineering, monitoring, inspection and maintenance controls speciflcally directed at preventing and minimising fugitive methane emissions and ensuring that any abnormal operating condition or evidence of leakage is identifled and rectifled promptly. Methane RECEIVED: 28/08/2026 STR010/0001-#9436218v1 leakage is not an intended or routine emission from the process and will be actively managed throughout operation through the plant's gas-containment systems, SCADA monitoring, preventative maintenance and leak detection and repair procedures, together with the regulatory requirements applicable to the facility. The Applicant acknowledges that effective methane management is important to maintaining the greenhouse gas beneflts associated with renewable biomethane production. This is precisely why methane containment and leak prevention have been treated as fundamental elements of the plant design and operational management regime. The Proposed Development has therefore been designed to minimise the potential for uncontrolled methane losses throughout the production, storage, upgrading and handling process. End-Use of Digestate As outlined in Chapter 1 of the EIAR, end-use of digestate that will be produced at the plant is a downstream activity and is not part of the development for which consent was sought in the application. The application of these materials will be appropriately managed under a separate regulatory regime designed to mitigate environmental risks and ensure sustainable land management practices. The principal elements of this regulatory framework include: • The Nitrates Directive (91/676/EEC), as transposed into Irish law by the Good Agricultural Practice for Protection of Waters Regulations (S.I. No. 113 of 2022), as amended; • The Nitrates Derogation Terms and Conditions (where applicable); • The Department of Agriculture, Food and the Marine (DAFM) Code of Good Agricultural Practice for Reducing Ammonia Emissions from Agriculture; • Inland Fisheries Ireland’s Code of Practice for the Protection of Waters; and • Any other applicable environmental, agricultural and water quality protection legislation in force at the time of digestate application. As the operator of the facility, Stream is committed to ensuring that digestate from the site is managed in compliance with all relevant legislative and environmental requirements. However, because the identity of receiving lands and future nutrient demands cannot be established years in advance, requiring detailed nutrient management plans or conflrmed landbanks at planning stage would be both impracticable and inconsistent with existing case law (Kemper3, Kilkenny Cheese4 and Sweetman5). Instead, these matters are appropriately addressed through the existing 3 Kemper v An Bord Pleanála [2020] IEHC 601 4 An Taisce v An Bord Pleanála [2022] IESC 8 5 Sweetman v EPA [2025] IECA 49 RECEIVED: 28/08/2026 STR010/0001-#9436218v1 agricultural regulatory framework at the point when digestate is produced and proposed for application to land. Reference in the An Taisce submission to Wanier et al and further commentary around the application of liquid digestate and potential for water pollution is not relevant to the proposed development, as the proposed facility has not been designed to produce or export untreated liquid digestate. Rather, the plant incorporates dedicated digestate treatment processes to convert the digestate into stable, marketable fertiliser products suitable for transport and beneflcial reuse. An extract from Table 2-4 (Chapter 2) of the EIAR outlining the digestate products that will be produced by the plant is provided below for information purposes. Table 0-1 By-Products of the AD Process Product Annual Quantity Likely Application Fibre digestate Up to 60,000 tonnes These sustainable fertiliser products will be derived from pasteurised digestate and will be suitable for application in the agri-food sector, whether in horticulture or agriculture. They can be applied for safe use wherever there is a suitable need for the nutrients. This creates an excellent circular economy use for these materials that offsets the need for synthetic fertilisers. Dried fertiliser / pellets Up to 7,000 tonnes Ammonium sulphate Up to 9,000 tonnes This Table demonstrates that the literature cited by An Taisce concerning the direct land application of untreated liquid digestate does not refiect the digestate treatment and product-management arrangements proposed in this application. A key objective of the proposed development is to convert poultry manure, which is currently concentrated within County Monaghan, into stable, high-quality fertiliser products that can be transported economically and exported to areas where there is a genuine nutrient demand. This represents a signiflcant environmental beneflt of the proposed development by facilitating the redistribution of nutrients from areas of surplus to areas of deflcit, thereby reducing nutrient pressures within the region while supporting the circular economy. Signiflcant technical design and investment will be put into the production of these sustainable fertiliser products, that can be used instead of artiflcial fertilisers thereby offsetting signiflcant GHG emissions and allowing the production of low carbon food. Importantly, the digestate treatment processes proposed are not simply storage or handling operations. They are speciflcally designed to transform digestate into stable and marketable fertiliser products. Digestate treatment processes employed at the site will include pasteurisation, separation (producing flbre digestate), evaporation and drying (producing a pellet). Ammonium sulphate will be produced as a by-product of the ammonia stripping process. These treatment processes improve the physical handling characteristics of the products, enhance their suitability for transport over longer RECEIVED: 28/08/2026 STR010/0001-#9436218v1 distances, reduce the volume requiring transport and produce fertiliser products that can be beneflcially reused in agriculture and horticulture in accordance with the applicable regulatory framework. These processes have been included in the site design to enable the export of nutrients away from Co. Monaghan as required. Accordingly, the proposed development should not be viewed as simply processing poultry manure, but as recovering nutrients in a form that enables their beneflcial reuse elsewhere, thereby reducing reliance on imported synthetic fertilisers and supporting Ireland's transition to a more circular and resource- efficient agricultural economy. The overall environmental assessment should therefore recognise that the project provides signiflcant environmental beneflts when compared with the existing management of poultry manure within the region. These beneflts include the recovery of nutrients from organic waste streams, the production of renewable fertiliser products, the export of surplus nutrients from an area of nutrient surplus, the displacement of carbon-intensive synthetic fertilisers and the reduction of greenhouse gas emissions associated with both manure management and fertiliser manufacture. In relation to commentary around assessment of the project against Article 4 of the Water Framework Development (WFD), a WFD Screening Assessment for the project was submitted as Appendix 10.3 of the EIAR. This assessment concluded that the proposed development will not result in any deterioration in the status of any surface water body or groundwater body, will not prevent any waterbody from achieving its Water Framework Directive objectives, and is therefore consistent with the requirements of Article 4 of the Water Framework Directive. Fossil Gas Lock-In An Taisce: The proposal also seeks to provide biogas to the centralised gas grid via an underground connection pipeline. However, injection of the biomethane into the grid for mixing with fossil gas will exacerbate infrastructural lock-in to fossil fuel use in the medium to long term which is incompatible with our emissions reduction legal obligations. By seeking to maintain a form of gas dependency, it is submitted that the proposal may run counter to the goals of the Paris Agreement as well as European and national climate policy and legislation to rapidly phase out reliance on fossil fuels. It is therefore submitted that supplying the biomethane to local off-grid industrial users would be a preferable option, provided it is used for electricity generation and is not mixed with fossil gas. Response RECEIVED: 28/08/2026 STR010/0001-#9436218v1 Grid injection is expressly contemplated by the National Biomethane Strategy as part of the national pathway for scaling biomethane production and integrating renewable gas into Ireland's existing energy system. The submission in relation to fossil gas lock-in suggests that injection of biomethane into the gas network would exacerbate dependence on fossil fuels and create long-term fossil fuel lock-in. This characterisation does not accurately refiect the purpose or effect of the proposed development. The proposed plant will produce renewable biomethane from organic feedstocks. When injected into the gas network, this biomethane directly displaces an equivalent volume of fossil natural gas that would otherwise be consumed. The development therefore contributes to reducing greenhouse gas emissions rather than increasing them and is directly aligned with objectives in the Climate Action Plan 2025 (CAP25) and the National Biomethane Strategy (2024), helping to decarbonise hard to abate sectors such as heat, transport and agriculture. The suggestion that biomethane should only be supplied to local off-grid industrial users is unnecessarily restrictive and would signiflcantly limit the environmental beneflts of the project. Grid injection allows renewable gas produced at the facility to be used wherever demand exists, maximising fossil fuel displacement and improving overall energy system fiexibility and security. Wetland Proximity An Taisce: It is noted that the proposed soil relocation area, which is to be converted into improved grassland, is adjacent to an area of scrub and wetland which is functionally linked with the Drumintin wetland (site code: MIW_MN610), as designated within the Wetlands Survey Ireland mapping tool. While an ecological survey is required for this site, it is noted as likely containing fen, reed swamp, scrub and wet grassland habitat which is likely to support species and habitats of ecological interest. The retention of such areas is increasingly crucial in the context of a deteriorating biodiversity emergency due to their provisioning of essential ecosystem services such as fiood attenuation, wildlife habitat provisioning, carbon sequestration, soil health etc. Consequently, it should be ensured that the proposal does not introduce adverse impacts upon the ecological integrity of this locally important wetland site, including the functionally linked scrubland which adjoins the soil relocation area. Section 59(B) of the Wildlife (Amendment) Act 2023 provides for public bodies to have regard to plans, programmes or strategies concerning the promotion of biodiversity conservation and the objectives/targets of the most recent National Biodiversity Action Plan (NBAP) in the performance of its functions. It is submitted that this applies to the RECEIVED: 28/08/2026 STR010/0001-#9436218v1 Council’s decision-making function when assessing the subject proposal, which contains biodiversity conservation considerations. Response The speciflc concern raised by An Taisce insofar as it relates to the proposed reproflling of the Soil Relocation Area no longer arises, as that element has been removed from the Proposed Development. Notwithstanding its removal, the Applicant commissioned Hydro Environmental Services (HES) to undertake a speciflc hydrological and hydrogeological assessment of the retained Renewable Biogas Plant site and to establish whether construction or operation of the revised Proposed Development has the potential to affect the hydrological or hydrogeological regime of nearby wetland areas. The assessment was prepared expressly in the context of the revised proposal and omission of the Soil Relocation Area. The HES assessment concluded that, following removal of the Soil Relocation Area, there is no identifled hydrogeological linkage by which the revised Proposed Development would alter the hydrological balance of Drumintin Wetland or any other wetland feature in the surrounding area. The assessment further concludes that the Proposed Development will not result in deterioration of any Water Framework Directive quality element or compromise achievement of the relevant WFD objectives. The HES report is enclosed with the Further Information response and should be read in conjunction with the revised Chapter 10 – Water (Hydrology and Hydrogeology) and the updated Water Framework Directive Assessment. Greenhouse Gas Savings & Traffic Impact An Taisce: It is noted from Chapter 1 of the EIAR (p. 5) that the applicant justifles the proposal by referring to greenhouse gas emissions (GHG) savings “of up to 42,000 tCO2e per year, equivalent to taking approximately 9,000 cars off public roads annually.” However, it should be assessed whether additional Heavy Goods Vehicle (HGV) movements arising from the subject proposal to transport waste inputs and process outputs do not contradict these claimed emissions beneflts. A comparative assessment of emissions implications in this respect would be a beneflcial exercise. Based on our calculations of the applicant’s total Average Annual Trips as outlined in Table 2-6 (EIAR CH.1, p. 39), this equates to 7,634 trips. It should be clarifled whether this total includes the trip associated with vehicles exiting the compound after delivery and whether the plant will be operational for 365 days of the year, which would bring the total Average Annual Trips to 9,855. Furthermore, the issue of HGV traffic is likely to be of concern to the local community, necessitating a robust Traffic Impact Assessment and RECEIVED: 28/08/2026 STR010/0001-#9436218v1 Road Safety Audit to ensure that the local road network can facilitate additional HGV traffic and that community amenity and safety is not compromised. Response - GHGs Emissions associated with the transport of feedstocks to the Renewable Biogas Plant and the transport of products from the facility have been expressly included within the greenhouse gas assessment presented in Chapter 14 Climate of the EIAR. The assessment therefore does not calculate the greenhouse gas beneflt of the Proposed Development while excluding the emissions associated with its operational HGV traffic. Table 14-7 of the EIAR quantifles operational transport emissions, including HGV movements associated with feedstock, digestate and CO₂, at approximately 265 tCO₂e per annum under Scenario 1 and 281 tCO₂e per annum under Scenario 2. These emissions form part of the overall operational greenhouse gas emissions assessed for the Proposed Development. The Climate assessment also quantifles the greenhouse gas offsets associated with operation of the Proposed Development, including displacement of fossil natural gas by renewable biomethane, replacement of more carbon-intensive fertiliser products, avoidance of emissions associated with the existing management of poultry manure, and beneflcial capture and use of biogenic CO₂. The total annual emissions offsets are assessed at approximately 50,635 tCO₂e under Scenario 1 and 56,857 tCO₂e under Scenario 2. After accounting for the emissions arising from construction and operation of the Proposed Development, including operational transport, the resulting net annual greenhouse gas balance is approximately -35,751 tCO₂e under Scenario 1 and -42,473 tCO₂e under Scenario 2. The reference in the EIAR to greenhouse gas savings of up to approximately 42,000 tCO₂e per annum therefore refiects the net assessment and does not exclude the emissions associated with HGV movements to and from the facility. Accordingly, the operational transport required to serve the facility has been incorporated into the Climate assessment. The Climate assessment concludes that the overall greenhouse gas effect is direct, long-term, positive and slight, and not signiflcant. Traffic Impact A robust Traffic and Transport Assessment (EIAR Chapter 6) and Road Safety Audit have been submitted as part of the Application and should be read in conjunction with this response. The assessment considers the capacity and safety of the receiving road network. The Proposed Development includes a new access from the L2280 together with improvement works to the L2280 and its junction with the R189. Swept-path analysis and RECEIVED: 28/08/2026 STR010/0001-#9436218v1 a Road Safety Audit have been undertaken. Following removal of the Soil Relocation Area, no development traffic will use the L2320 fleld access. Figures provided in relation to Average Annual Trips include for the delivery and collection of materials to and from the site. For clarity, each HGV vehicle visit to the facility comprises an arrival at and subsequent departure from the site. The forecast HGV flgures are based on vehicles entering the site and the corresponding outward movement. There will be no deliveries or collections on Sundays or bank holidays, which leaves a total of 303 delivery / collection days across the year. Based on recorded vehicle movement data at the Applicant’s operation biogas site in Ballymena, Co. Antrim, it is reasonably expected that in terms of materials import and export Saturdays are not typically as busy as weekdays. For the purposes of the assessment of traffic, it is assumed that Saturday counts as a half day, in which case the Average Annual Trip numbers are based on 277 days per year. Having regard to the predicted operational traffic associated with the Proposed Development, together with the location, scale and traffic-generating characteristics of other existing and permitted developments considered in the cumulative assessment, the combined traffic demand is not predicted to result in a signiflcant cumulative effect on the receiving road network. Accordingly, the cumulative residual operational traffic effect is assessed as not signiflcant. RECEIVED: 28/08/2026