Bord na Mona: Kilaranny Draft Decommissioning and Rehabilitation Plan 2021

Kilaranny Area: 244 ha

Author: Seán Doyle

Peat was primarily harvested for fuel peat to be used at Cloghan Power Station, West Offaly Power in Shannonbridge and Derrinlough Brickette Factory in Co. Offaly. Some horticultural peat was also harvested.

Bord na Móna are obliged to carry out peatland rehabilitation via an IPC License issued by the Environmental protection Agency. In addition, the Government has agreed to support peatland rehabilitation via the establishment of the Peatland Climate Action Scheme (PCAS). This is funded via the government and by Bord na Móna

It is a principle of Bord na Móna rehabilitation planning that no actions will be taken that would negatively impact on adjacent land. No boundary drains will be blocked. Water will still leave the site via the existing outlets

Part of Kilaranny has been leased to NPWS and has been used for the relocation of turf-cutters from Clara Bog. This was in support of raised bog conservation objectives at Clara Bog, which included the cessation of turf-cutting at this site and in support of the National Raised bog Special Areas of Conservation management plan 2017-2022 (NPWS 2017)

The turf cutters are currently harvesting turf from the east of Kilaranny Bog

A small area of Kilaranny has been used by Bord na Móna to establish a Eucalyptus biomass trial (central area of bog)

Measures proposed for Kilaranny Bog include drain blocking and other measures required to raise water levels to the surface of the peat (changing levels of pipes for example).

Some fertiliser will be spread on headlands and other areas (a small part of the overall area) to encourage vegetation growth.

It is not proposed to carry out any intensive rehabilitation actions to change or negatively affect any existing land-uses

2021: Short-term planning actions.
2022: Short-term practical actions.
2023-2024: Any Long term practical actions; Evaluate success of short-term rehabilitation measures outlined above and remediate, where necessary.
2024: Decommission silt-ponds, if necessary


The monitoring, after-care and maintenance programme for Kilaranny Bog, as required to meet Condition 10 of the IPC Licence, is defined as:

Quarterly monitoring assessments of the site to determine the general status of the site, assess the condition of the rehabilitation work, asses the progress of natural colonisation, monitoring of any potential impacts on neighbouring land and general land security. The number of site visits will reduce after 2 years to bi-annually.

These site visits will assess the need to additional rehabilitation, if needed.

Water quality monitoring will be established. Monitoring of key water quality parameters for 2 years after rehabilitation will include: Ammonia, Phosphorous, Suspended solids (silt), pH and conductivity.

Kilaranny East
In the extreme east of site private turf cutting is occurring. This has resulted in a mosaic of cutover plots of different peat depths, in varying states of use. Bare peat and pioneer cutover vegetation communities are the dominant habitats in the region with some larger drains forming water bodies that contain riparian vegetation as well some Sphagnum species such as S. cuspidatum, S. subnitens, S. capillifolium and S. papillosum. A large area of bare peat exists in the between the eastern private turbary area and the central area of the bog. Some stockpiles of peat are still present in this area.

Kilaranny Bog currently has a gravity drainage regime. Depression analysis (BNM-DR-23-02-09 titled Kilaranny Bog: Depression Analysis) indicates that parts of the bog are natural basin with significant potential for re-wetting, with the assumption that all drains would be blocked. It is likely that a portion of the basins in target areas will re-wet with deeper water, creating a mosaic of wetland habitats, when drains are blocked.

Three outfall points and associated silt pond infrastructure exist on Kilaranny former production area. Outfalls are situated in the north, west and south west of the site. The outfalls in the west discharge water into the Glasshouse while the outfall in the north discharges into the Moin Armstrong river.

Silt Ponds

Silt ponds are the key silt control infrastructure to control potential emissions from industrial peat production sites. As required under licence, BNM have several procedures for how it manages and maintains its silt pond network. The silt that builds up in silt ponds is excavated (Question: to where?) on a regular basis by Bord na Móna to facilitate an efficient level of silt control.

Kilaranny bog has three treated surface water outlets, one to the IE_SH_25B090761 BROSNA_100 (Moin Armstrong), which is a tributary of the River Brosna, IE_SH_25B090600 BROSNA_080.

The remaining two emission outlets are to the IE_SH_25D130400 DERRYCOOLY STREAM_010 (Derrycooly Stream), which in turn is a tributary of the Brosna.

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