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Further feasibility work should provide the following information in report form. The work should be informed by the initial pre-feasibility report, 'Pre-Feasibility Assessment of the Potential for the Development of Constructed Wetlands' dated 03/05/2023. The report should provide the confidence to proceed to 'design and build' phases or the rationale for not proceeding with wetland implementation.
Full feasibility Specification
The key deliverable for this contract will be:
I. Build on the 'pre-feasibility reduction figures' through identification of the possible range, ie minimum and maximum, for nutrient reduction capacity of the site, via wetland creation, for Nitrogen and Phosphorus using:
a. Transfer abstraction of water from the relevant watercourse and;
with generated reductions calculated using:
i. One of the following methods with a supporting narrative
2. Clarification of design objectives in terms of the site's capacity to generate nutrient reductions for N and P in the context of:
o potential loss of ditch/stream (where relevant) o water impoundment/abstraction o water temperature impacts through wetland transfer
o potential for groundwater interaction o the extent of clay onsite o whether the wetland requires a clay or artificial liner o if soil nutrient levels pose a risk of 'treatment liability' in terms of nutrient leaching
o identification of suitable monitoring points at in-flow and potential out-flows o flow and nutrient concentration monitoring
o implementation and construction o performance monitoring to equilibrium o annual wetland maintenance
o archaeological areas on-site o utilities on-site
o contaminate collection and discharge risk o contaminate effect on biological processes on wetland plants
DESCRIPTION CONTINUES IN ADDITIONAL TEXT SECTION
Additional information: 3. Feasibility Assessment including constraints and options assessment covering:
The above should be influenced by the provided 'site pre-feasibility' report and be undertaken within scope of the 'Wetland Mitigation Framework'
Purpose of this Contract
To support the Nutrient Neutrality project's habitat delivery enabling Natural England, landowners and other interested parties to understand constraints and likely costs of progression towards the design and build phase of schemes.
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To apply for this opportunity you must submit your quotation meeting the requirements detailed in the Request for Quotation (RFQ) attached.
Your response must be sent to …@naturalengland.org.uk by 17:00 on 20th October 2023
If you have any clarification questions linked to this opportunity or the procurement process please submit these via email to …@naturalengland.org.uk. Please note that, unless commercially sensitive, both the question and the response will be circulated to all tenderers.
| Supplier | Identifier | Award Value | Cross-References |
|---|---|---|---|
| LAND & WATER SERVICES LTD | 02776439 | £14,495 | - |
Government spending data: This supplier has received £53,236,822 in 611 payments (over £25k) from DEFRA (2019-11-01 to 2026-02-27). View full payment history →