---
title: "OPA T881 - OFD THANCKES ENVIRONMENTAL INVESTIGATIONS (MINI TENDER USING OPA T426 PSF LOT 8)"
ocid: "ocds-h6vhtk-077def"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-077def"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-077def.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-077def.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "The Oil and Pipelines Agency"
published: "2026-09-30"
---

# OPA T881 - OFD THANCKES ENVIRONMENTAL INVESTIGATIONS (MINI TENDER USING OPA T426 PSF LOT 8)

Buyer: The Oil and Pipelines Agency  
Current stage: Award  
OCID: ocds-h6vhtk-077def

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## Summary

The Oil and Pipelines Agency commissioned environmental investigation services at Oil Fuel Depot Thanckes. The work supports ongoing ground investigations, following findings in a 2023 monitoring report, with groundwater monitoring and investigation of contamination plumes where the Agency identified gaps in their delineation. The initial work is intended to assess and close those gaps and progress towards an agreed remediation strategy and programme. The work is at OFD Thanckes, in Cornwall.

The procurement is complete and the contract was awarded to Arthian Limited on 22 September 2026. This was a mini-tender under the Oil and Pipelines Agency’s existing PSF Lot 8 arrangement; the procurement was below the applicable threshold. The awarded value is £19,873.10 excluding VAT (£23,847.72 including VAT). The contract period runs from 1 October to 31 December 2026. The procurement was for one lot.

This award indicates demand from the Oil and Pipelines Agency for focused environmental investigation work at its Thanckes depot. Suppliers seeking to compete for comparable requirements should be able to undertake groundwater monitoring, investigate and delineate contamination plumes, identify evidence gaps and help develop remediation strategies and programmes. Experience supporting continuing ground investigations would be relevant to this particular requirement. The award was made through a mini-tender under the Agency’s PSF Lot 8 arrangement, so familiarity with competing through an established purchasing arrangement would also be pertinent. The awarded work is a defined investigation package rather than a broad environmental services contract.

## Notice

The purpose of this scope of works (SoW) by the Oil and Pipelines Agency (OPA) is to support a Site Investigation from the findings of the 2023 John Grimes Monitoring Report comprising groundwater monitoring at Oil Fuel Depot (OFD) Thanckes. The Works required would be in support with ongoing ground investigations on site dating back to 2014 (Jacobs). The investigations have identified a number of contamination plumes where gaps in delineation have been identified by OPA. This scope of works outlines the initial stages to assess and close the gaps identified and progress towards an agreed remedial strategy and program.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/092529-2026 |
| Notice type | UK6 - Contract Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Not Specified |
| Procurement method details | Below threshold - unknown |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 30 Sep 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 22 Sep 2026 |
| Contract period | 1 Oct 2026 - 31 Dec 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £19,873 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | The Oil and Pipelines Agency |
| Locality | GOSPORT |
| Postcode area | Portsmouth |
| Postcode | PO12 1AP |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ3 Hampshire and Isle of Wight |
| ITL 3 | TLJ35 South Hampshire |
| Local authority | Gosport |
| Electoral ward | Forton |
| Westminster constituency | Gosport |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | Mabbett & Associates Ltd |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71313000 - Environmental engineering consultancy services

## Release History

- 30 Sep 2026 at 16:02 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/092529-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/092529-2026
  30th September 2026 - Contract award notice on Find a Tender

## Notice URLs

- 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-077def. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-077def.json.