---
title: "Hertfordshire Chalk Groundwater Model Phase 2"
ocid: "ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0.json"
source: "Contracts Finder"
current_stage: "Tender"
buyer: "DEFRA NETWORK ETENDERING PORTAL"
published: "2022-04-14"
---

# Hertfordshire Chalk Groundwater Model Phase 2

Buyer: DEFRA NETWORK ETENDERING PORTAL  
Current stage: Tender  
OCID: ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0.json)

## Summary

The Hertfordshire Chalk Groundwater Model Phase 2 tender, managed by the Defra Network eTendering Portal, is currently in the active procurement stage. This project focuses on enhancing the existing groundwater model covering an extensive area of the Chalk aquifer in the counties surrounding the north-east of London. The tender was published on 14 April 2022, with a submission deadline set for 13 May 2022. The contract is set to commence on 6 June 2022 and will last for one year, concluding on 5 June 2023. This procurement falls under the 'Design-modelling services' industry category, and it is an open procedure that allows participation from various suppliers, including those based in the United Kingdom and other regions.

This tender presents significant growth opportunities for businesses specialising in environmental consultancy, hydrological studies, and data modelling services. Small and medium enterprises (SMEs) and voluntary, community, and social enterprises (VCSEs) are particularly encouraged to participate, as the project aims to refresh conceptual models and integrate new data for groundwater management. Companies that can demonstrate expertise in the development and refinement of numerical models, as well as experience in working within the environmental sector, would be well-suited to compete for this contract.

## Notice

The Hertfordshire Chalk Groundwater Model (HCGM) represents 4060km2 of the Chalk aquifer to the north-east of London, including the county of Hertfordshire, parts of Buckinghamshire, Bedfordshire, Oxfordshire, Essex, Cambridgeshire, and London. The model represents a number of Chalk streams that are situated in the Wye, Colne and Lee catchments. These catchments have been previously assessed to suffer from large scale over abstraction through the Catchment Abstraction Management Strategy (CAMS) methodology. The EA is looking to procure an external contractor to deliver Phase 2 of the project, which will deliver the Formulation of Revised Conceptual Model. This phase will refresh the existing foundation conceptual models and merge them into a single conceptual model that will then be updated. This will then support proposals for further development of the model in Phase 3. The objectives of Phase 2 are: 1. To refresh the existing foundation conceptual models and merge them into a single conceptual model 2. To gather and review necessary datasets and literature to support merged conceptual model update, reporting on initial model conceptual model uncertainty and data gaps 3. To expand the conceptual model where new data and literature is available for several concepts such as influence of superficial deposits, karstic development, evidence of hydrogeological layering within the Chalk 4. To report on the updated conceptual model and make recommendations for development and refinement of numerical model in MODFLOW 6 (Phase 3) Additional information: Thank you for your interest in tendering for this requirement, You will need to access the documents through Bravo Solutions portal. 1) The web address is https://defra.bravosolution.co.uk and click the link to register - Accept the terms and conditions and click 'continue' - Enter your correct business and user details - Note the username you chose and click 'Save' when complete - You will shortly receive an email with your unique password (please keep this secure). 2. Express an Interest in the tender - Login to the portal with the username/password - Click the 'PQQs / ITTs Open To All Suppliers' link. (These are Pre-Qualification Questionnaires or Invitations to Tender open to any registered supplier) - Click on the relevant PQQ/ ITT to access the content. - Click the 'Express Interest' button at the top of the page. - This will move the PQQ /ITT into your 'My PQQs/ My ITTs' page. (This is a secure area reserved for your projects only) -You can now access any attachments by clicking 'Buyer Attachments' in the 'PQQ/ ITT Details' box 3. Responding to the tender - Click 'My Response' under 'PQQ/ ITT Details', you can choose to 'Create Response' or to 'Decline to Respond' (please give a reason if declining) - You can now use the 'Messages' function to communicate with the buyer and seek any clarification - Note the deadline for completion, then follow the onscreen instructions to complete the PQQ/ ITT - There may be a mixture of online and offline actions for you to perform (there is detailed online help available) You must then submit your reply using the 'Submit Response' button at the top of the page. Please give yourself enough time to complete this before the deadline. If you require any further assistance please consult the online help, or contact the e-Tendering help desk. Please direct all questions and queries through the message function of the portal, including any clarification questions. This is to ensure no questions are missed and that all answers can be shared with all interested suppliers at the same time

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/9443c9f6-bd9c-4725-81cc-67833e2b029f |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure (below threshold) |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Planning, Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Apr 2022 |
| Submission deadline | 13 May 2022 |
| Future notice date | 15 Apr 2022 |
| Award date | Not specified |
| Contract period | 5 Jun 2022 - 5 Jun 2023 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | DEFRA NETWORK ETENDERING PORTAL |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1P 3JR |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 72 - IT services: consulting, software development, Internet and support

### Codes

- 72242000 - Design-modelling services

## Release History

- 14 Apr 2022 at 08:59 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/9443c9f6-bd9c-4725-81cc-67833e2b029f
- 11 Apr 2022 at 08:19 - Planning - Planned Procurement Notice - https://www.contractsfinder.service.gov.uk/Notice/491d62d2-ce0c-4623-b4f2-aab22255f343
- 11 Apr 2022 at 08:17 - Planning - Planned Procurement Notice - https://www.contractsfinder.service.gov.uk/Notice/491d62d2-ce0c-4623-b4f2-aab22255f343

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/9443c9f6-bd9c-4725-81cc-67833e2b029f
  14th April 2022 - Opportunity notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/491d62d2-ce0c-4623-b4f2-aab22255f343
  11th April 2022 - Future opportunity notice on Contracts Finder

## Notice URLs

- https://defra.bravosolution.co.uk

## 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-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-900e0ee7-817b-4781-bee7-a2f0f3beb0e0.json.
