HomeMy WebLinkAbout2560394 - F.I. Received Doc. - Surface water drainge and SuDS proposalMonaghan Bus Station - Draft Surface Water Drainage and SuDS Maintenance Proposals
Monaghan Bus Station
Surface Water Drainage and SuDS Maintenance Proposals
July 2026
Further Information response to FI item 1A Maintenance Proposals
Bus Éireann confirms that the proposed surface water drainage system, Class 1 interceptor/separator and
associated nature-based drainage measures at Monaghan Bus Station will be incorporated into the site’s
ongoing planned maintenance regime.
The maintenance works will be carried out by Bus Éireann’s appointed facilities / yard maintenance contractor,
with specialist drainage and interceptor maintenance undertaken by a competent drainage contractor where
required. The maintenance regime will include regular inspection, cleaning, removal of silt/debris, maintenance
of planted SuDS areas, servicing of the Class 1 interceptor, and retention of inspection and waste disposal
records.
The purpose of the maintenance regime is to ensure that surface water from the site continues to be collected,
treated and discharged in a controlled manner, and that the drainage and SuDS measures remain effective in
protecting surface water and groundwater quality.
The maintenance regime will include the following items:
1. Class 1 interceptor / petrol interceptor
The interceptor shall be inspected and serviced by a competent drainage / environmental contractor. The
inspection shall include checking the chamber condition, access covers, inlet and outlet, oil and silt levels, and
any visible defects or blockages. Where required, accumulated oil, silt and contaminated liquids shall be
removed by a licensed waste contractor and disposed of to an authorised facility. Waste transfer records shall be
retained by Bus Éireann.
2. Road gullies, surface water channels and yard drainage
Road gullies, channel drains and surface water collection points shall be inspected and cleaned to prevent build-
up of silt, litter, leaves, oil residues or other debris. Gullies and channels shall be emptied or jetted as required to
maintain free flow to the surface water drainage system and interceptor.
3. Surface water manholes, pipework and outfalls
Surface water manholes shall be inspected periodically for silt build-up, standing water, blockages, damage or
evidence of contamination. Pipework shall be jetted or CCTV surveyed if recurring blockages, surcharge or poor
drainage performance is observed. Outfall / discharge points shall be inspected to ensure that they remain clear
and unobstructed.
4. Porous asphalt parking bays and infiltration sub-base
The porous asphalt parking areas shall be kept free of excessive silt, mud, leaves and debris. The surface shall be
swept/vacuum cleaned periodically using suitable equipment to maintain permeability. Ponding, staining,
clogging or damage to the porous surface shall be recorded and repaired where required. Heavy deposition of
loose material shall not be permitted to remain on the porous asphalt surface.
5. Tree pits, planting areas and landscaped SuDS areas
Tree pits and landscaped areas receiving surface water overflow shall be inspected to ensure that water can
enter and drain freely. Inlets, kerbs, overflow routes and planting beds shall be kept clear of silt, litter and debris. RECEIVED: 29/07/2026
Monaghan Bus Station - Draft Surface Water Drainage and SuDS Maintenance Proposals
Planting shall be maintained by weeding, pruning, replacement of failed plants where necessary, and removal of
invasive growth. Mulch/topsoil shall be maintained so that it does not block drainage routes.
6. Spill response
In the event of a fuel, oil or chemical spill, Bus Éireann will arrange immediate containment and clean-up using
appropriate spill kits and/or a specialist contractor. Contaminated material shall not be washed into the drainage
system. Any significant spill shall be recorded and the interceptor inspected following the incident.
7. Record keeping
Bus Éireann shall retain records of inspections, cleaning, interceptor servicing, waste disposal dockets, defects
identified and remedial works completed. Records shall be made available for review if requested by the Planning
Authority or other statutory body.
Typical maintenance schedule
The following schedule is a typical planned maintenance regime. The frequency should be increased where
inspections identify silt build-up, ponding, contamination, blockage, reduced drainage performance or following
significant rainfall or spill events.
Item Typical maintenance action Suggested frequency
General yard drainage Visual inspection for ponding, blocked gullies, oil staining, debris or
damaged covers.
Monthly and after major
rainfall
Road gullies Remove silt, leaves, litter and debris; empty gullies where required. Quarterly, or more often if
required
Surface water channel
drains
Clear gratings, channels and collection points; remove silt and
debris.
Monthly / quarterly
Surface water manholes Lift covers, inspect for silt, blockage, standing water, contamination
or defects.
Twice yearly
Surface water pipework Jetting or CCTV survey where poor flow, blockage or surcharge is
observed.
As required
Class 1 interceptor Specialist inspection of chamber, inlet/outlet, oil/silt levels, alarm if
fitted, covers and general condition.
Twice yearly minimum
Class 1 interceptor
cleaning
Empty/remove oil, silt and contaminated liquids by licensed
contractor; retain waste records.
Annually, or sooner if
inspection shows build-up
Porous asphalt Sweep/vacuum surface to remove grit, leaves, silt and debris; check
for ponding/clogging.
Quarterly, with deeper
clean annually
Infiltration sub-base Check performance by observing ponding or slow drainage after
rainfall.
Twice yearly and after
heavy rainfall
Tree pits Clear inlets/outlets, remove litter/silt, check soil/mulch levels and
drainage function.
Quarterly
Landscaped SuDS /
planted areas
Weed, prune, replace failed planting, remove litter, keep overflow
routes clear.
Quarterly during growing
season
Outfalls / discharge points Check for blockage, erosion, debris or contamination. Twice yearly and after
major rainfall
Spill response Contain spill, prevent entry to drainage, arrange specialist clean-up
and inspect interceptor.
Immediately following any
spill
Maintenance records Keep inspection sheets, cleaning records, waste disposal dockets
and defect reports.
Ongoing, reviewed
annually
RECEIVED: 29/07/2026