Council planning record

Variation of Condition No.2 (Approved plan) ‘Auxiliary Spillway Cross Sections Sheet 1 of 3 Ref. B15100-123532-12-ZZ-DR-CA-PN9063 P02’ attached to Planning Consent NP5/72/250B dated 24/03/2023

Llyn Celyn Reservoir, Frongoch. LL23 7NU

All consultations completeReference: NP5/72/250GEryri National Park

Last published check: 2 Oct 2026, 17:48. Check the council record for more recent changes.

Application location

Llyn Celyn Reservoir, Frongoch. LL23 7NU

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Application summary

Status
All consultations complete
Application type
Variation of a condition
Received
4 Sept 2024
Validated
Not published
Determination deadline
29 Oct 2024
Local authority
Eryri National Park

Application overview

Variation of Condition No.2 (Approved plan) ‘Auxiliary Spillway Cross Sections Sheet 1 of 3 Ref. B15100-123532-12-ZZ-DR-CA-PN9063 P02’ attached to Planning Consent NP5/72/250B dated 24/03/2023

Proposal details

Reference
NP5/72/250G
Alternative references
PP-13379190
Ward
Llanuwchllyn ED, Llandderfel ED
Parish
Llanycil, Llandderfel
Agent
Mrs. Jenny Coxon
UPRN
AP0CEP89C685HB30WM

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Documents 6 of 6

DocumentPublishedAction
FF5 Sept 2024View
LL15 Sept 2024View
C5 Sept 2024View
LL25 Sept 2024View
S - D"{r Cymru / Welsh Water25 Sept 2024View
Rh.P23 Jan 2025View

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Application timeline

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  1. Received date

    Published milestoneCouncil source
  2. Registration date

    Published milestoneCouncil source
  3. Consultation expiry date

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    A published target or deadline. It does not confirm an outcome.

    Council source
  4. Statutory expiry date

    Past published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source
  5. Dispatch date

    Published milestoneCouncil source
  6. Decision date

    Published milestoneCouncil source
  7. Decision due date

    Past published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source
  8. Decision expiry date

    Published deadline

    A published target or deadline. It does not confirm an outcome.

    Council source

Decision & conditions

Permitted with conditions
Planning conditions
  1. The development hereby permitted shall be commenced before the expiration of FIVE years from the date of the original planning permission, reference no. NP5/72/250B, dated 24/03/2023.
  2. 2. The development hereby permitted shall be carried out in strict conformity with the details shown on plan(s): Planning Application Site Boundary B15100-123532-12-ZZ-DR-CA-PN9009 Site Location Plan B15100-123532-12-ZZ-DR-CA-PN9086 Site General Arrangement B15100-123532-12-ZZ-DR-CA-PN9061 Hesgyn Catchwater and Flow Measurement Structure B15100-123532-12-ZZ-DR-CA-PN9101 Timber Post Stock Proof Fencing – Standard Detail B15100-123532-12-ZZ-DR-CA-PN9102 Chain Single Leaf Field Gate – Standard Detail B15100-123532-12-ZZ-DR-CA- Soakaway Detail B15100-123532-12-ZZ-DR-NA-PN9114 Clawdd Typical Cross Section B15100-123532-12-ZZ-DR-NA-PN9115 Pollution Prevention Plan Site Compound Setup B15100-123532-12-ZZ-DR-CA-SE9105 Pollution Prevention Plan Site Wide Area B15100-123532-12-ZZ-DR-CA-SE9106 Public Visuals B15100-102365-12-ZZ-DR-LA-PN9107 Basic Whole Site Layout Welsh Water Public Engagement B15100-123532-12-ZZ-DR-KE-GA9050 Tumble Bay GA B15100-123532-12-ZZ-DR-CA-PN9088 Culvert GA B15100-123532-12-ZZ-DR-CA-PN9089 Outlet GA B15100-123532-12-ZZ-DR-CA-PN9090 Centre alignment Long section B15100-123532-12-ZZ-DR-CA-PN9072 Auxiliary Spillway – Cross Sections (Sheet 1 of 3) – Drawing Number – B15100-123532-12-ZZ-DR-CA-PN9063 Rev P02 (dated 09.08.24 Culvert Sections B15100-123532-12-ZZ-DR-CA-PN9066 Outlet sections B15100-123532-12-ZZ-DR-CA-PN9069 Enabling Works Plan B15100-123532-12-ZZ-DR-CA-PN9008 Access improvements Works B15100-123532-12-ZZ-DR-CA-PN9076 Enabling Works – Site Compound – Plan View B15100-123532-12-ZZ-DR-CA-PN9075 Landscape and Visual – Considerations Plan B15100-102365-12-ZZ-DR-NA-PN9091 Landscape and Visual – Landscape Plan B15100-102365-12-ZZ-DR-NA-PN9092 Landscape and Visual – Landscape Sections B15100-102365-12-ZZ-DR-NA-PN9094 Wider Area Planting Plan B15100-123532-12-ZZ-DR-NA-PN9116 Detailed Planting Plan B15100-123532-12-ZZ-DR-NA-PN9117 Site Waste Management Plan (SWMP) B15100-123532-12-XX-RP-NA-EI0211 Material Management Plan (MMP) (incl Soil Management Plan SMP) B15103-123532-12-XX-RP-NB-EI0166 Construction Traffic Management Plan (CTMP) B15100-123532-12-XX-RP-CE-CJ0198 Flood Consequence Assessment (FCA) B15100-123532-12-XX-RP-NA-EI0187 submitted to the Local Planning Authority and contained in the form of application and in any other documents accompanying such application unless condition(s) to amend them is/are included on this planning decision notice
  3. The development shall be carried out in accordance with “Llyn Celyn Section 10 MITIOS Works Construction Environmental Management Plan February 2023”, as approved under application reference NP5/72/250D, dated 02/04/2023
  4. The development shall be carried out in accordance with “Plan Llyn Celyn Section 10 MITIOS Works Landscape and Environmental Management Plan," dated April 2023, by Mott MacDonald (Document Reference No. B15100-123532-12-XX-RP-NB-EI0204, Revision P02)”, as approved under application reference NP5/72/250E, dated 19/05/2023
  5. Prior to any stonework commencing on the site, a trial stonework panel including pointing not less than 2.00 m² shall be constructed. No building operations in stone shall be carried out on the site unless and until the trial panel has been inspected and approved by means of a formal application to the Local Planning Authority. The stonework of the spillway shall be built in accordance with the approved sample.
  6. The core working hours for general construction shall be limited to between 0700 and 1800 Monday to Friday, 0700 and 1300 Saturday, and no working on a Sunday or Bank Holidays, unless otherwise approved by the Local Planning Authority.
  7. The development shall be carried out and all archaeological work completed in strict accordance with “WRITTEN SCHEME OF INVESTIGATION FOR AN ARCHAEOLOGICAL WATCHING BRIEF AT Llyn Celyn Reservoir, Gwynedd, February 2023” ”, as approved under application reference NP5/72/250D, dated 02/04/2023
  8. A detailed report on the archaeological work required by condition 7 shall be submitted to and approved by means of a formal application to the Local Planning Authority within 6 months of completion of archaeological fieldwork and approved by the Local Planning Authority.
  9. Rhaid cychwyn ar y datblygiad a ganiateir yma cyn diwedd PUM mlynedd o ddyddiad y caniatâd cynllunio gwreiddiol, cyfeirnod rhif. NP5/72/250B, dyddiedig 24/03/2023.
  10. Rhaid cyflawni'r datblygiad a ganiateir drwy hyn yn llwyr unol â'r manylion a ddangosir ar y cynllun(iau): Planning Application Site Boundary B15100-123532-12-ZZ-DR-CA-PN9009 Site Location Plan B15100-123532-12-ZZ-DR-CA-PN9086 Site General Arrangement B15100-123532-12-ZZ-DR-CA-PN9061 Hesgyn Catchwater and Flow Measurement Structure B15100-123532-12-ZZ-DR-CA-PN9101 Timber Post Stock Proof Fencing – Standard Detail B15100-123532-12-ZZ-DR-CA-PN9102 Chain Single Leaf Field Gate – Standard Detail B15100-123532-12-ZZ-DR-CA- Soakaway Detail B15100-123532-12-ZZ-DR-NA-PN9114 Clawdd Typical Cross Section B15100-123532-12-ZZ-DR-NA-PN9115 Pollution Prevention Plan Site Compound Setup B15100-123532-12-ZZ-DR-CA-SE9105 Pollution Prevention Plan Site Wide Area B15100-123532-12-ZZ-DR-CA-SE9106 Public Visuals B15100-102365-12-ZZ-DR-LA-PN9107 Basic Whole Site Layout Welsh Water Public Engagement B15100-123532-12-ZZ-DR-KE-GA9050 Tumble Bay GA B15100-123532-12-ZZ-DR-CA-PN9088 Culvert GA B15100-123532-12-ZZ-DR-CA-PN9089 Outlet GA B15100-123532-12-ZZ-DR-CA-PN9090 Centre alignment Long section B15100-123532-12-ZZ-DR-CA-PN9072 Auxiliary Spillway – Cross Sections (Sheet 1 of 3) – Drawing Number – B15100-123532-12-ZZ-DR-CA-PN9063 Rev P02 (dated 09.08.24 Culvert Sections B15100-123532-12-ZZ-DR-CA-PN9066 Outlet sections B15100-123532-12-ZZ-DR-CA-PN9069 Enabling Works Plan B15100-123532-12-ZZ-DR-CA-PN9008 Access improvements Works B15100-123532-12-ZZ-DR-CA-PN9076 Enabling Works – Site Compound – Plan View B15100-123532-12-ZZ-DR-CA-PN9075 Landscape and Visual – Considerations Plan B15100-102365-12-ZZ-DR-NA-PN9091 Landscape and Visual – Landscape Plan B15100-102365-12-ZZ-DR-NA-PN9092 Landscape and Visual – Landscape Sections B15100-102365-12-ZZ-DR-NA-PN9094 Wider Area Planting Plan B15100-123532-12-ZZ-DR-NA-PN9116 Detailed Planting Plan B15100-123532-12-ZZ-DR-NA-PN9117 Site Waste Management Plan (SWMP) B15100-123532-12-XX-RP-NA-EI0211 Material Management Plan (MMP) (incl Soil Management Plan SMP) B15103-123532-12-XX-RP-NB-EI0166 Construction Traffic Management Plan (CTMP) B15100-123532-12-XX-RP-CE-CJ0198 Flood Consequence Assessment (FCA) B15100-123532-12-XX-RP-NA-EI0187 wedi’i gyflwyno i'r Awdurdod Cynllunio Lleol ac a gynhwysir yn y ffurflen gais ac mewn unrhyw ddogfennau eraill gyda'r cais, os nad oes amod(au) sy'n eu diwygio wedi ei gynnwys ar yrrhybydd cynllunio hwn.
  11. Bydd y datblygiad yn cael ei gario allan yn unol â “Cynllun Rheoli Amgylcheddol Gwaith Adeiladu Adran 10 MITIOS Llyn Celyn Chwefror 2023”, fel y cymeradwywyd dan gais cyfeirnod NP5/72/250D, dyddiedig 02/04/2023.
  12. Rhaid cyflawni'r datblygiad yn unol â “Cynllun Rheoli Tirwedd a'r Amgylchedd Gwaith MITIOS Adran 10 Cynllun Llyn Celyn,” dyddiedig Ebrill 2023, gan Mott MacDonald (Cyfeirnod Dogfen Rhif. B15100-123532-12-XX-RP-NB- EI0204, Diwygiad P02)”, fel a gymeradwywyd dan gais cyfeirnod NP5/72/250E, dyddiedig 19/05/2023
  13. Cyn i unrhyw waith cerrig ddechrau ar y safle, rhaid adeiladu panel prawf o waith carreg yn cynnwys pwyntio dim llai na 2.00 m². Ni chaniateir gwneud unrhyw waith adeiladu mewn carreg ar y safle oni bai a hyd nes y bydd y panel prawf wedi'i archwilio a'i gymeradwyo trwy gais ffurfiol i'r Awdurdod Cynllunio Lleol. Rhaid adeiladu gwaith carreg y gorlifan yn unol â'r sampl gymeradwy
  14. Cyfyngir yr oriau gwaith craidd ar gyfer adeiladu cyffredinol i rhwng 0700 a 1800 o ddydd Llun i ddydd Gwener, 0700 a 1300 ar ddydd Sadwrn, a dim gweithio ar ddydd Sul na Gwyliau Banc, oni bai y cymeradwyir yn wahanol gan yr Awdurdod Cynllunio Lleol.
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