Monksland Industrial Estate, Athlone, Co Roscommon
Arran operates a small batch-mode multi-purpose chemical synthesis plant for the contract manufacture of products for pharmaceutical intermediates, fragrance and flavouring, contact lens sector, and other specialised chemical and industrial applications.
MINEREX Environmental Limited (MEL) act as consultants to Arran, and have produced a number of reports for Arran and the EPA over the past decade.
Measuring contaminants – Toluene, Methyl Tert-Butyl Ether (MTBE), Tetrahydrafuran (THF) and Xylenes (m & p & o-Xylene)
Historic contamination from 1990’s and recent (2018) leakage. There was a fugitive leak to ground in 2019, however it was not possible to determine the correct volume lost to this incident.
No indication of any continuation or new leakages since 2018/19
New site containment measures with upgrades to all sumps, drains, floors and bunds to reduce the potential for a repeat of 2018 and 2019 leakage to groundwater.
Arran is conducting a “pump & treat” remediation programme where the groundwater from AMW11 (drilled in 2019) is extracted, treated and used as cooling water on vacuum pumps before collection in Arran effluent tanks and subsequently discharged (licensed SE-1) for treatment in the local Monksland Wastewater treatment plant.
Arran has increased pumping rates from approximately 20-22 m3/day (since July 2020) to approximately 30-35 m3/day of groundwater from AMW11 since September 2021. The level of contaminants has changed (positively) as recorded on the Arran daily chemical oxygen demand (COD) and conductivity analysis and with the Minerex quarterly VOC monitoring programme
Monitoring results from September, October (EPA) & November 2021 found levels of some contaminants higher than previous monitoring events.
-failing to notify EPA of an incident with the potential for environmental contamination of groundwater, namely damage to the side wall of the Unit 2 Sump
-emissions at emissions point reference number Vent A1 which exceeded the licenced emission limit values
-multiple emissions of environmental significance to groundwater
-alternative sampling and monitoring facilities were not put in place in the event of the malfunction of the continuous monitor
-environmental records not kept on site and made available to EPA
Arran’s EPA feed, latest records
Arran on 2020 EPA National Priority Sites List