The Avenue Reed Bed

PLEASE NOTE: Version 5 the latest Q & A document has been uploaded to the HCA extranet. PLEASE NOTE: Version 4 the latest Q & A document has been uploaded to the HCA extranet. The site lies within the boundary of the former Avenue Coking Works, which has historically been used as a colliery, lime and ironworks and most recently a coke and chemical works. The coking works closed in 1992 and the land - including the Site - has been subject to a voluntary remediation scheme, commissioned by the Homes and Communities Agency.

Remediation of the wider Avenue land parcel commenced in 2009 and is now largely complete. However, a sub-surface perched groundwater unit remains in the vicinity of the River Rother at the north east corner of the site.

The objectives of the Project are as follows:

1. Construction of environmental management reed bed incorporating: • Excavation to formation for new reed bed structure with 1:3.5 batters • Partially lined reed bed trench with gabion walls • Soil infilled reed bed • Ground water cut off inlet structure incorporating stone/gravel medium, rainwater collection, • baffles, solids collection pipe, odour collection pipe • Reed bed outlet incorporating stone/gravel medium and outlet pipe • High level gravel reed bed • High level reed bed discharge chamber with flow control • Piped discharge to river • Sheet pile groundwater flow cut off walls • Access steps etc.

2. Landscaping to reed bed batter and areas affected by the works (Zone 2 fill area and stockpile area)

3. Treatment of groundwater flow during construction and establishment of reed bed

4. Safety fencing around reed bed

5. Reinstatement of Multi User Route

Additional information: BIDDERS PLEASE NOTE: The latest Q & A document can be viewed via the HCA extranet. BIDDERS PLEASE NOTE: The following folder has now been uploaded to the extranet " Borehole date SI Plan" and the latest Q & A document is also available. BIDDERS PLEASE NOTE: Following clarification questions during tender stage the following document has been uploaded to the HCA extranet. "Avenue Reed Bed Clarifications Questions v1" Bidders should log into the HCA extranet to access the document.

BIDDERS PLEASE NOTE: If a tenderer wishes to undertake a site visit please can they contact me Chris Sellars ([email protected]) to confirm a time slot.

The visitor limit is a maximum of 3 people (Ideally 2 due to vehicle restrictions), full PPE will also be required (hard hat, jacket, boots, gloves, glasses)

BIDDERS PLEASE NOTE: A word version of the ITT has been added to the tender documents folder available via the link above.

The closing time for tenders is 1pm.

All discussions, meetings and communications will be conducted in English.

The contract will be subject to English law. Tenders and all supporting documents must be priced in GBP and all payments under the contract will be made in GBP.

This procurement and award is subject to the transparency arrangements being adopted by the UK Government. These arrangements include the publication of tender documentation issued by the HCA and the contract between the HCA and supplier. Bidders should highlight any areas they consider commercially sensitive in order for the HCA to be able to honour our transparency obligations without undermining the bidders commercial interests.

Candidates are advised that the HCA is subject to the Freedom of Information Act 2000 ("The Act"). If a candidate considers that any of the information supplied as part of this procurement procedure should not be disclosed because of its commercial sensitivity, confidential or otherwise, they must, when providing this information, clearly identify the specific information they do not wish to be disclosed and clearly specify the reasons for its sensitivity. The HCA shall take such statements into consideration in the event that it receives a request pursuant to the Act which relates to the information provided by the interested party. Please note, it is insufficient to include a statement of confidentiality encompassing all the information provided in the response.

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