HomeMy WebLinkAbout2660014 - F.I. Received Doc. - FI Response LetterALAN CLARKE &ASSOCIATESYORKSTREET,CASTLEBLAYNEY,CO MONAGHANt:+353 (0)42 9740071 f:+353 (0)42 9754726 e:info@alanclarke.ie
ALAN CLARKE –CHARTERED ENGINEER,BE MIEI
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Planning Department
Monaghan Co Co
The Glen
Co Monaghan
19th May 2026 26130/AC/LT01
Re: Proposed Daly’s Yard, Dundalk Road, Drummond Otra, Carrickmacross, Co Monaghan
Planning Reference 26/60014
To whom it may concern,
The further information (FI) request conditions dated 13th March 2016 in relation to the above
referenced planning application refers. We wish to set out the following in relation to the engineering
elements of this planning application which addresses the relevant information requested in item 4. of
the FI request.
The Drainage & Site Services Proposals document is enclosed indicating the various proposals for
both the drainage arrangement for the existing development and the proposed surface water drainage
and SuDS arrangements for the proposed development which is the subject of this application. This
letter and accompanying drawing should be read in conjunction with information provided by
McGuigan Architects which addresses the remaining items of the FI request.
Item 4. (a) We have competed and attached a Water Protection Checklist as part of this
submission. This should be read in conjunction with the attached drawings – in particular drawing
reference 25130-500 Rev P1 Site Drainage Layout.
Items 4. (b) The accompanying drawing reference 26130-500 Rev P1 Site Drainage Layout
indicates proposals for the storm water drainage system which takes account of the Department of
Housing, Local Government and Heritage guidance document on Nature-based Solutions to the
Management of Rainwater and Surface Water Runoff in Urban Areas. This is achieved by
incorporating a grassed filter strips and a grassed swale as the primary conveyance and storage
features of the surface water drainage layout. The meet the requirements for nature-based solutions
and also conform with best practice in relation to SuDS, as set out in the CIRIA SuDS Manual.
The proposed surface water drainage has been designed to mitigate against the risk of polluting
matters discharging from the proposed development. Based on its proposed specification with a
permeable stone finished yard, run off will be minimal. However, any residual run-off will be from the
stone yard area will be conveyed to the short section of piped drainage system via a grassed swale
following over land flow across a filter strip. These features will provide for the removal of suspended
solids and pollutants. An oil interceptor will be installed downstream of the hydrobrake to protect the
receiving stream from hydrocarbons. In the event that the yard finish is replaced by a concrete or
similar sealed surface at a future date, the proposed nature-based solutions in the drainage system
will operate to remove pollutants and suspended solids. The proposed hydrobrake will restrict the
discharge to greenfield run-off rates, and the oil interceptor will ensure the removal of any residual
hydrocarbons.
Item 4. (c) Drawing 26130-500 Rev P1 indicates the location of the proposed Class 1 oil
interceptor on the discharge pipe from the proposed yard. The interceptor has been sized to deal
with the volume of run-off from the yard in the event that it is resurfaced with concrete at a future date.
RECEIVED: 29/05/2026
Item 4. (d) The Drainage & Site Services Proposals document includes details of the
maintenance requirements for the drainage system, including the responsible persons. It should be
noted that the form and features of the system (notably the grassed filter strip for sediment removal
and open swale for conveyance and attenuation storage) mitigate and minimise the extent of active
maintenance that is required.
Item 4. (e) Drawing 26130-500 Rev P1 has been provided and indicates the existing and
proposed storm drainage system outlined in blue, the directional flow of all surface water pipelines and
conveyance features, discharge points and outfalls, proposed nature-based solutions for surface
water, and all foul water drainage systems indicated in red.
We trust you find the above in order, however, if you have any queries, please do not hesitate to
contact us.
Yours sincerely,
_________________________
Alan Clarke
Chartered Engineer
Alan Clarke & Associates RECEIVED: 29/05/2026