Geotechnical Engineering Services Welwyn Garden City

Geotechnical Engineering Services Welwyn Garden City

Ground investigation – Chantry Lane.

UK-Welwyn Garden City: geotechnical engineering services

2012/S 103-172761

Contract notice


Directive 2004/18/EC

Section I: Contracting authority

I.1)Name, addresses and contact point(s)

Welwyn Hatfield Borough Council
The Campus
Contact point(s): Procurement
For the attention of: Andrew Harper
AL8 6AE Welwyn Garden City
Telephone: +44 1707357371

Further information can be obtained from: The above mentioned contact point(s)

Specifications and additional documents (including documents for competitive dialogue and a dynamic purchasing system) can be obtained from: The above mentioned contact point(s)

Tenders or requests to participate must be sent to: The above mentioned contact point(s)

I.2)Type of the contracting authority

Regional or local authority
I.3)Main activity

General public services
I.4)Contract award on behalf of other contracting authorities

The contracting authority is purchasing on behalf of other contracting authorities: no

Section II: Object of the contract

II.1.1)Title attributed to the contract by the contracting authority:

Ground investigation – Chantry Lane.
II.1.2)Type of contract and location of works, place of delivery or of performance

Service category No 12: Architectural services; engineering services and integrated engineering services; urban planning and landscape engineering services; related scientific and technical consulting services; technical testing and analysis services
NUTS code UKH23

II.1.3)Information about a public contract, a framework agreement or a dynamic purchasing system (DPS)

The notice involves a public contract
II.1.4)Information on framework agreement
II.1.5)Short description of the contract or purchase(s)

Geotechnical engineering services. Geotechnical engineering services to Chalk Mines in Chantry Lane, Hatfield.
II.1.6)Common procurement vocabulary (CPV)


II.1.7)Information about Government Procurement Agreement (GPA)

The contract is covered by the Government Procurement Agreement (GPA): no

This contract is divided into lots: no
II.1.9)Information about variants
II.2)Quantity or scope of the contract
II.2.1)Total quantity or scope:

Between September 2006 and February 2009 Hyder Consulting undertook three phases of the Wider Hatfield Chalk Mining risk assessment project for Hertfordshire County Council and Welwyn Hatfield Borough Council (The Council) comprising detailed studies assessing twenty eight potential areas of historical chalk mining across Hatfield.
Based upon the findings of Hyder’s Wider Hatfield risk assessment – risk review report issued in February 2009 (which had assessed Mine Areas 8 & 9, centred around open space at Chantry Lane Copse, as presenting a High Risk based on the presence of known mine shafts) The Council commissioned Hyder in February 2010 to carry out a fourth phase of works to investigate fourteen Mine Areas across Hatfield. These investigations included a microgravity survey carried out across the South-Eastern part of Chantry Lane Copse (around the location of known shafts) and within the gardens of the immediately adjacent properties beside Vigors Croft and Chantry Lane.
The survey identified ten negative microgravity anomalies in close proximity to the known and recorded chalk shafts in this area. The curvilinear and interconnected nature of most of these anomalies together with their amplitude and magnitude suggest that they are caused by a network of abandoned mine workings. This is supported by the findings of a row of dynamic probes that were sunk across an anomaly located within the vicinity of a capped chalk shaft situated within the south-east corner of Chantry Lane Copse. Four of these dynamic probes indicated deep zones of disturbed ground within the chalk between depths of 9,20m and 17,80m suggesting the presence of a chalk mine that is almost centred on the alignment of the anomaly.
An Interpretative Ground Investigation Report prepared by Hyder in September 2010 for Mine Areas 8 & 9 Chantry Lane concluded that mineworkings were present at the site extending from the known shafts beneath adjacent residential land. The report made recommendations for a supplementary microgravity survey followed by an intrusive ground investigation targeted on negative anomalies.
In January 2011 The Council commissioned Hyder to prepare a Feasibility Study to support an application to the Homes & Communities Agency’s Land Stabilisation Programme for funding for treatment of the abandoned 19th century chalk mines identified beneath residential properties off Chantry Lane and Vigors Croft in Hatfield. Funding was awarded to The Council in December 2011 and Mace were appointed to act as Project Manager for the scheme in early 2012 while Hyder were appointed to act as Geotechnical engineer for the project in April 2012.
A supplementary microgravity survey will be undertaken at the site in June and July 2012 to establish the boundaries of the probable mine identified by the initial microgravity survey and to enable the final design of an intrusive ground investigation targeted on the negative anomalies identified by the initial and supplementary microgravity surveys.
The objective of the design phase intrusive ground investigation is to confirm the extents of the mine and to establish its main characteristics such as its width, depth, thickness of mine roof, condition and whether it consists of mainly collapsed or open workings to enable the design of the treatment works. This investigation will also establish baseline monitoring data for the chalk aquifer as the site lies within a Groundwater source protection zone.
The Council is looking to appoint an experienced ground investigation Contractor to undertake the design phase intrusive ground investigation works. Due to the specialist nature of this investigation we are seeking expressions of interest from ground investigation contractors with experience of investigating areas of mined ground located within residential areas and areas of public open space.
II.2.2)Information about options
II.2.3)Information about renewals

This contract is subject to renewal: no
II.3)Duration of the contract or time limit for completion

Starting 2.10.2012. Completion 22.2.2013

Section III: Legal, economic, financial and technical information

III.1)Conditions relating to the contract
III.1.1)Deposits and guarantees required:

A 10 % performance bond or part company guarantee will be required.
III.1.2)Main financing conditions and payment arrangements and/or reference to the relevant provisions governing them:
III.1.3)Legal form to be taken by the group of economic operators to whom the contract is to be awarded:
III.1.4)Other particular conditions

The performance of the contract is subject to particular conditions: yes
Description of particular conditions: As contained within the tender documentation.
III.2)Conditions for participation
III.2.1)Personal situation of economic operators, including requirements relating to enrolment on professional or trade registers

Information and formalities necessary for evaluating if the requirements are met: The Authority will apply all the offences listed in Article 45(1) of Directive 2004/18/EC (implemented as Regulation 23(1) of the Public Contract Regulations (PCR) 2006 in the UK) and all of the professional misconducts listed at Article 45(2) of Directive 2004/18/EC (see also Regulation 23(2) in the PCR 2006) to the decision of whether a Candidate is eligible to be invited to tender.
A full list of the Regulation 23(1) and 23(2) criteria are at

Candidates will be required to answer these questions as part of the qualification process. For candidates who are registered overseas, you will need to declare if you have any offences/misconduct under your own countries laws, where these laws are equivalent to the Regulation 23 lists.
Candidates who have been convicted of any of the offences under Article 45(1) are ineligible and will not be selected to bid, unless there are overriding requirements in the general interest for doing so.
Candidates who are guilty of any of the offences, circumstances or misconduct under Article 45(2) may be excluded from being selected to bid at the discretion of the Authority.

III.2.2)Economic and financial ability

Information and formalities necessary for evaluating if the requirements are met: (a) Appropriate statements from banks or, where appropriate, evidence of relevant professional risk indemnity insurance;
(b) The presentation of balance-sheets or extracts from the balance-sheets, where publication of the balance-sheet is required under the law of the country in which the economic operator is established;
(c) A statement of the undertaking’s overall turnover and, where appropriate, of turnover in the area covered by the contract for a maximum of the last three financial years available, depending on the date on which the undertaking was set up or the economic operator started trading, as far as the information on these turnovers is available.
As contained within the application form.
III.2.3)Technical capacity

Information and formalities necessary for evaluating if the requirements are met:
As contained within the application form.
III.2.4)Information about reserved contracts
III.3)Conditions specific to services contracts
III.3.1)Information about a particular profession
III.3.2)Staff responsible for the execution of the service

Legal persons should indicate the names and professional qualifications of the staff responsible for the execution of the service: yes

Section IV: Procedure

IV.1)Type of procedure
IV.1.1)Type of procedure

IV.1.2)Limitations on the number of operators who will be invited to tender or to participate

Envisaged minimum number 5: and maximum number 7
Objective criteria for choosing the limited number of candidates: As detailed in the application form.
IV.1.3)Reduction of the number of operators during the negotiation or dialogue
IV.2)Award criteria
IV.2.1)Award criteria

The most economically advantageous tender in terms of the criteria stated in the specifications, in the invitation to tender or to negotiate or in the descriptive document
IV.2.2)Information about electronic auction

An electronic auction will be used: no
IV.3)Administrative information
IV.3.1)File reference number attributed by the contracting authority:

IV.3.2)Previous publication(s) concerning the same contract

IV.3.3)Conditions for obtaining specifications and additional documents or descriptive document

Time limit for receipt of requests for documents or for accessing documents: 5.7.2012 – 12:00
Payable documents: no
IV.3.4)Time limit for receipt of tenders or requests to participate

6.7.2012 – 12:00
IV.3.5)Date of dispatch of invitations to tender or to participate to selected candidates

IV.3.6)Language(s) in which tenders or requests to participate may be drawn up

IV.3.7)Minimum time frame during which the tenderer must maintain the tender
IV.3.8)Conditions for opening tenders

Section VI: Complementary information

VI.1)Information about recurrence

This is a recurrent procurement: no
VI.2)Information about European Union funds

The contract is related to a project and/or programme financed by European Union funds: no
VI.3)Additional information

Welwyn Hatfield Borough Council has moved to a new way of e-Tendering and worked closely with the County, other Districts and Partners to create a joint procurement web site called Supply Hertfordshire. This web site is supported by BiP Solutions who provide a system called Delta-ets which is the background platform to Supply Hertfordshire.
The pre-qualification process.
This tender is a two stage process and you will only be invited to tender if you have successfully passed through the pre-qualification questionnaire (PQQ) stage. If you wish to be considered as a tenderer you must complete and submit a completed PQQ via Tenderbox by 12:00 hrs on 6.7.2012. PQQs cannot be uploaded after the closing date/time. Any supporting documents should be cross-referenced to the relevant question. If the Council requires further information concerning your application form your Organisation will be contacted.
Step 1: registering with Supply Hertfordshire.
To participate in this tender you will need to go into and register, thereafter you will be issued with a Username and Password. (If you have already registered with Delta-ets or Supply Hertfordshire, please follow the link above where you can log on using your existing username and password. If you have registered and have forgotten your Username and Password, please click on the forgotten password link below the log in box.) Please keep this USERNAME and PASSWORD secure, and do not pass it to any third parties.

Step 2: completing your PQQ.
To complete the PQQ for this Tender you will need to go into the Tenderbox area and enter the Tender Access Code C9U7MMY839. You will then need to download the relevant PQQ and complete. Please complete the information as fully as possible.
Step 3: uploading Your Completed PQQ.
Once you have completed your PQQ for this Tender exercise you must then “upload” your completed response in to the Tenderbox (Tender Access Code C9U7MMY839).
Please make sure you have submitted your completed PQQ to the correct Tender Access Code, the Council will not be held accountable for any errors made by a tenderer in submitting your completed PQQ.
Please note you will have to satisfactorily, pass through this pre-qualification stage to be invited to Tender via e-mail.
If you are experiencing problems, please contact the Delta helpdesk via e-mail at or call +44 8452707050 Monday to Friday 9am – 5pm for further assistance. GO Reference: GO-2012530-PRO-3958933.

VI.4)Procedures for appeal
VI.4.1)Body responsible for appeal procedures

Welwyn Hatfield Borough Council
The Campus
AL8 6AE Welwyn Garden City
Telephone: +44 1707357371

VI.4.2)Lodging of appeals
VI.4.3)Service from which information about the lodging of appeals may be obtained

VI.5)Date of dispatch of this notice:30.5.2012