On 16 February 2026 the Environment Agency issued a variation to environmental permit EPR/BB3001FT for Rathlin Energy’s West Newton ‘A’ well site in East Yorkshire, following its ‘minded to’ consultation last summer and autumn. The decision was publicised on 17 February 2026. (consult.environment-agency.gov.uk)
The variation authorises a single reservoir‑stimulation operation on the existing WNA‑2 well, targeting the Permian‑age Kirkham Abbey Formation at about 1.7 km depth. The activity is regulated as a groundwater activity (AR9) and is confined to WNA‑2 only. Injected stimulation fluid left in the formation is regulated as non‑hazardous mining waste; the permit also covers flaring and on‑site storage/handling of crude oil. (consult.environment-agency.gov.uk)
Operational limits are tightly defined. The permit caps total injected volume at 85 m³ for the diagnostic tests plus the single stimulation, with a maximum pump rate below 5 m³ per minute and a surface injection pressure limit of 9,000 psi. The Environment Agency’s decision document records expected fracture lengths under 20–30 m and the nearest mapped fault roughly 1 km from the well, with induced‑seismicity risk assessed as very low. (consult.environment-agency.gov.uk)
A specific pre‑operational condition requires Rathlin to submit a Hydraulic Fracturing Plan at least three months before any stimulation, securing written approval from both the North Sea Transition Authority and the Environment Agency. Earlier pre‑operational measures for groundwater monitoring boreholes, flare design/monitoring and ambient air monitoring were completed during previous phases. An improvement requirement also mandates a reviewed secondary/tertiary containment plan to CIRIA C736 standards before AR9 begins or by 1 February 2027 (whichever is sooner). (consult.environment-agency.gov.uk)
Air‑emissions controls include continuous temperature monitoring to ensure flare combustion above 800°C and monthly calculation‑based checks of oxides of nitrogen, carbon monoxide and total VOCs during well clean‑up and testing. Ambient air monitoring is monthly, with weekly sampling while flaring is taking place. (consult.environment-agency.gov.uk)
On process fluids and chemicals, the Agency records that hydrocarbon‑based stimulation fluid was proposed after water‑based fluids used during earlier completion damaged the reservoir’s productivity. The chemical inventory (Revision 5B, May 2025) was accepted with ‘full chemical transparency’ and one proposed additive (MO‑IV Breaker) was removed during determination. (consult.environment-agency.gov.uk)
Two public consultations informed the decision: the first ran from 19 November 2024 to 24 January 2025; the second (on the ‘minded to’ decision) ran from 29 July to 6 October 2025. The Environment Agency considered representations from statutory bodies, elected representatives, community groups and individuals. Its consultation notes also set out matters outside permitting scope, including land‑use planning issues. (consult.environment-agency.gov.uk)
Regulatory responsibilities remain split. The Environment Agency regulates environmental risks and monitoring under the Environmental Permitting Regulations. The NSTA must consent well operations and will assess the Hydraulic Fracturing Plan; HSE oversees well integrity and site safety; and UKHSA is consulted on public‑health aspects of permit applications. (nstauthority.co.uk)
Policy context is unchanged: the Government maintains an effective moratorium on high‑volume ‘associated hydraulic fracturing’ consents. Activities outside the statutory volume thresholds for ‘associated hydraulic fracturing’ are not captured by that moratorium, as confirmed to Parliament in 2021; the West Newton limits set by the permit are materially below those thresholds. Any operation must still meet the pre‑operational Hydraulic Fracturing Plan requirement. (gov.uk)
For residents and stakeholders, practical implications include expanded monitoring and reporting. The permit fixes emission‑monitoring schedules, groundwater and surface‑water sampling points, ambient air monitoring during flaring, and performance reporting for flaring, oil and gas production. Non‑compliance is enforceable through notices, suspensions or prosecution under the Environmental Permitting Regulations. (consult.environment-agency.gov.uk)