---
title: "Dredge & Disposal Operations at Pwllheli Marina: Sediment Plume Numerical Modelling and Environmental Assessments"
ocid: "ocds-h6vhtk-04fcc4"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04fcc4"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-04fcc4.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-04fcc4.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "CYNGOR GWYNEDD"
published: "2025-10-01"
---

# Dredge & Disposal Operations at Pwllheli Marina: Sediment Plume Numerical Modelling and Environmental Assessments

Buyer: CYNGOR GWYNEDD  
Current stage: Award  
OCID: ocds-h6vhtk-04fcc4

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04fcc4)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-04fcc4.json)

## Summary

The recent contract for 'Dredge & Disposal Operations at Pwllheli Marina: Sediment Plume Numerical Modelling and Environmental Assessments' was awarded by the Cyngor Gwynedd, a public authority characterised as sub-central government under Welsh devolved regulations. This project, located in North Wales, focuses on simulating the fate of dredged marine sediment using numerical modelling. The procurement, which falls under the services industry category, has been completed as of 1st October 2025. The procurement process utilised an open competition method, below the threshold, with the contract being signed on 1st July 2025 for a duration from 3rd October to 28th November 2025.

This tender presents significant opportunities for SMEs, particularly those specialising in environmental services, as demonstrated by the successful supplier, Intertek Energy & Water Consultancy Services. Companies in the consultancy sector with expertise in numerical modelling and environmental assessments would be well-suited to engage in similar opportunities, given the project's technical focus and the demand for innovative solutions in maritime sediment management. This procurement highlights Cyngor Gwynedd's endorsement of open competition and the inclusion of smaller enterprises, fostering business growth within the regional and broader UK markets.

## Notice

The consultant will take a leading role in the development and implementation of a numerical model to simulate the fate of dredged marine sediment disposed at sea, beyond the harbour entrance at Pwllheli, North Wales.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/061302-2025 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Below threshold - open competition |
| Tender suitability | SME, VCSE |
| Awardee scale | SME |
| All stages | Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 1 Oct 2025 |
| Submission deadline | 9 May 2025 |
| Future notice date | Not specified |
| Award date | 10 Jun 2025 |
| Contract period | 2 Oct 2025 - 28 Nov 2025 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £75,000 |
| Lots value | £75,000 |
| Awards value | £100,000 |
| Contracts value | £64,017 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | CYNGOR GWYNEDD |
| Locality | CAERNARFON |
| Post town | Llandudno |
| Postcode | LL55 1SH |
| Country | Wales |
| ITL 1 | TLL Wales |
| ITL 2 | TLL3 North Wales |
| ITL 3 | TLL32 Gwynedd |
| Local authority | Gwynedd |
| Electoral ward | Canol Tref Caernarfon |
| Westminster constituency | Dwyfor Meirionnydd |
| Delivery location | TLL Wales |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | INTERTEK ENERGY & WATER CONSULTANCY SERVICES |

## CPV Codes

### Divisions

- 45 - Construction work
- 90 - Sewage, refuse, cleaning and environmental services

### Codes

- 45000000 - Construction work
- 90000000 - Sewage, refuse, cleaning and environmental services

## Release History

- 1 Oct 2025 at 11:39 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/061302-2025
- 19 Jun 2025 at 13:51 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/033760-2025
- 3 Apr 2025 at 13:36 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/012844-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/061302-2025
  1st October 2025 - Contract details notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/033760-2025
  19th June 2025 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/012844-2025
  3rd April 2025 - Tender notice on Find a Tender

## Notice URLs

- http://www.gwynedd.llyw.cymru
- https://etenderwales.bravosolution.co.ukITT
- https://etenderwales.bravosolution.co.ukITT:itt_116429-Dredge&DisposalOperationsatPwllheliMarina:SedimentPlumeNumericalModellingandEnvironmentalAssessments
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-04fcc4. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-04fcc4.json.