Tender

NWRT - Nant Garred Ddu Rocky Ramp NGarrDdu-Rramp-0001

NORTH WALES RIVER TRUST

This public procurement record has 1 release in its history.

Tender

11 Jul 2024 at 12:37

S2W Notice - Website Invitation to Tender Notice
Summary of the contracting process

The North Wales River Trust has published a tender for the reinstatement of a rocky ramp/stepped pool at Nant Garred Ddu. The procurement process involves the buyer organisation, North Wales River Trust, seeking goods and services related to environmental services. The tender deadline for submission is on July 26, 2024, with a deadline for completion of work set at September 6, 2024.

This tender opportunity presents a chance for businesses specialising in environmental services and construction to compete for a contract that involves reinstating a rocky ramp/stepped pool. Suppliers should ensure compliance with the eligibility criteria, such as the completion deadline. The procurement method is open, offering a transparent opportunity for qualified businesses to engage in this environmental project.

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Notice Information

Notice Title

NWRT - Nant Garred Ddu Rocky Ramp NGarrDdu-Rramp-0001

Notice Description

Please contact the above email/telephone number to arrange a site visit or visit this open site yourself and contact us with any questions.Reinstate a rocky ramp/stepped pool that was previously installed. Please consult the above drawings.Scour pool infill:The scour pool immediately below the weir is too deep (1-1.5m depth depending on flow) to install all of the rocky ramp/stepped pool. This will require filling in partially (50%) with gravel/pebble material (0.05-0.25m sizes; ~12.5m3). The pool is approx. 5 x 5 m and is sloped into the centre of the pool. Once filled, this will need to be topped with a geotextile membrane which will be secured in place. The newly implemented rocky ramp/stepped pool will sit on top of this section. Gravel, pebble and cobble should be placed on top to form a new base layer.Rocky ramp:Large 0.5-3 tonne boulders will be required for the works (please provide an estimation of the amount required upon quoting, we estimate requiring 5-8 large boulders per "step") as they need to be large enough to not move during high flow. Over a 25m distance from the weir working downstream, arrange boulders in a downstream facing arc at 5 metre intervals (see drawings above). One or a few of the boulders in each arc should be lower (into substrate) to allow water to chute over the top and provide an entry point for fish into the pool. The head difference (height of the water) between the lowest boulder(s) in each arc to be no more than 0.3m to the next consecutive pool up- or downstream. Boulders should be keyed into the bank and substrate where possible to increase stability and 12.5mm rebar can be used if needed to connect boulders. Boulders may be required around the edge of the scour pool downstream of the weir. Once boulders have been placed into the channel, gaps should be infilled with 0.05-0.25m gravel/pebbles to secure the boulders in place. Channel width is approx 5-6m over the 25m length. Normally the ramp is constructed in a downstream to upstream direction. Care must be taken to secure the downstream end of the ramp to prevent the toe from being removed in high flows. 'Flow control' rocks must also be used between the slots in each step (see image).Water diversion:The utilisation of a coffer dam (or similar) may be required to divert flow from each bank (to one half of the channel width) at a time in order to carry out the works on each side in a dry area.PLEASE consult the attached document for more details.NOTE: To register your interest in this notice and obtain any additional information please visit the Sell2Wales Web Site at https://www.sell2wales.gov.wales/Search/Search_Switch.aspx?ID=142951. This notice has been sent as a region specific notice. If you did not receive an alert about this you are not based in the specific region selected by the buying authority. Questions on why this was sent as a region specific notice should be sent to the buying authority.(WA Ref:142951)

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-kuma6s-142951
Publication Source
Sell2Wales
Latest Notice
https://www.sell2wales.gov.wales/search/search_switch.aspx?ID=142951
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
S2W Notice - Website Invitation to Tender Notice
Procurement Type
Standard
Procurement Category
Goods
Procurement Method
Open
Procurement Method Details
Not specified
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

90 - Sewage, refuse, cleaning and environmental services

CPV Codes

90700000 - Environmental services

Notice Value(s)

Tender Value
Not specified
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
11 Jul 20241 years ago
Submission Deadline
26 Jul 2024Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
Not specified - Not specified
Recurrence
Not specified

Notice Status

Tender Status
Not Specified
Lots Status
Not Specified
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
NORTH WALES RIVER TRUST
Contact Name
Oisin Lowe Sellers
Contact Email
oisin@northwalesriverstrust.org
Contact Phone
+44 7877540293

Buyer Location

Locality
LLANRWST
Postcode
LL26 0TY
Post Town
Llandudno
Country
Wales
Major Region (ITL 1)
TLL Wales
Basic Region (ITL 2)
TLL3 North Wales
Small Region (ITL 3)
TLL33 Conwy and Denbighshire
Delivery Location
Not specified
Local Authority
Conwy
Electoral Ward
Llanrwst a Llanddoged
Westminster Constituency
Bangor Aberconwy

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

Download

The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts. 

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