Netherlands,
Emmen
- nl/28
Road and parking
Prior information notice of tender for 250 m-long Hondsrugweg tunnel and underground infrastructure with parking as part of Atalanta project to reconstruct Emmen city centre. Market consultation scheduled for 20.04.2010, registration deadline 16.04.2010 by e-mail using TED form. More from Rubaij Bouman of Aanbestedingsteam Tunnel at Gemeente Emmen, tel +31 591689465, e-mail p.rubaij-bouman@emmen.nl. Visit www.emmen-atalanta.nl and http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=099189-2010. 14/10.
Invitation to tender by competitive dialogue, deadline 29.10.2010, for construction of 250 m-long Hondsrugweg tunnel and underground infrastructure with parking as part of Atalanta project to reconstruct Emmen city centre. Further information, specs and docs from Rubaij Bouman of Aanbestedingsteam Tunnel at Gemeente Emmen, Postbus 30001, 7800 RA Emmen, tel +31 591689465, e-mail HRWT@emmen.nl. Visit www.emmen-atalanta.nl and http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=291826-2010. 40/10.
Invitation to tender by competitive dialogue, deadline 09.05.2012, for part-design, engineering and construction of 235 m-long Hondsrugweg tunnel and underground infrastructure with parking as part of Atalanta project to reconstruct Emmen city centre. Further information, specs and docs from F J Esendam at Gemeente Emmen, Postbus 30001, 7800 RA Emmen, tel +31 591689157, e-mail tenders@emmen.nl, to whom tenders or requests to participate must be sent. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=111557-2012. 15/12.
BAM Civiel BV of Zuidbroek secured the contract for part-design, engineering and construction of 235 m-long Hondsrugweg tunnel and underground infrastructure with parking as part of Atalanta project to reconstruct Emmen city centre. Further information from F J Esendam at Gemeente Emmen, Emmen, tel +31 591689157, e-mail tenders@emmen.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=080677-2013. 11/13.
Netherlands,
North Holland
- nl/27
Roads
Closing Date:
13.10.2009 (Tender Closed)
Open invitation to tender for maintenance and equipment refurbishment in IJ tunnel (2 x 1,129 m) on S116 in Amsterdam. Contract duration 2010, with extension to 2012. Contact W H Renkema at Amsterdam Municipality, Infrastructure and Transport, tel +31 205565-578, fax -710, e-mail w.renkema@ivv.amsterdam.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=244091-2009. 37/09.Open invitation to tender, deadline 13.10.2009, for maintenance and equipment refurbishment in Amsterdam Arena, Piet Hein (1,492 m) and IJ-tram tunnels in Amsterdam. Duration contract 2010, with extension to 2012. Contact as above. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=244094-2009. 37/09.
Cofely Energy & Infra BV secured the EUR228,720 contract (excluding VAT), for maintenance and equipment refurbishment in IJ tunnel (2 x 1,129 m) on S116 in Amsterdam. Contact W H Renkema at Amsterdam Municipality, Infrastructure and Transport, tel +31 205565-578, fax -710, e-mail w.renkema@ivv.amsterdam.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=011335-2010. 03/10.Cofely Energy & Infra BV secured the EUR268,757 contract (excluding VAT), for maintenance and equipment refurbishment in Amsterdam Arena, Piet Hein (1,492 m) and IJ-tram tunnels in Amsterdam. Contact as above. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=011336-2010. 04/10.
Prior Information Notice for 2015 maintenance of technical installation in IJ tunnel (2 x 1,129 m) on S116 in Amsterdam. Contact Amsterdam Municipality, attn Raymond van den Broeke, Amsterdam, tel +31 202511111, e-mail inkoopfysiek@amsterdam.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=250809-2015. 30/15.
Open invitation to tender, deadline 08.10.2015, for maintenance of technical installations in IJ tunnel (2 x 1,129 m) on S116 in Amsterdam. Duration of contract 24 months from award. Contact Amsterdam Municipality, attn Raymond van den Broeke, Amsterdam, tel +31 202511111, e-mail inkoopfysiek@amsterdam.nl. For electronic access to information and electronic submission of tenders https://www.tenderned.nl:443/tenderned-web/aankondiging/detail/samenvatting.xhtml?aankondigingId=63022. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=292539-2015. Ref.n. AI 2015-187. 35/15.
Open invitation to tender, deadline 03.10.2016, for maintenance of E&M equipment in Piet Hein (1,492 m) and IJ (1,139 m) tunnels in Amsterdam. For electronic access to information and electronic submission of tenders go to https://www.tenderned.nl:443/tenderned-web/aankondiging/detail/samenvatting.xhtml?aankondigingId=86379. Contact Amsterdam Municipality, attn Hans Bakker, tel +31 625377023, e-mail hans.bakker@amsterdam.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=253680-2016 and http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=250695-2016. Ref.n. AI 2016-143. 30/16.
Competitive dialogue , deadline 14.05.2018, for the upgrading of the technical equipment in Piet Hein (1,492 m) tunnel in Amsterdam. For bid documents and for electronic submission of tenders go to https://www.tenderned.nl/tenderned-web/aankondiging/detail/publicatie/akid/5bcc6e8e3f2b3af473ed0913f150884.
For further information and for tenders tenderNed, tel +31 8008363376 enter, email servicedesk@tenderned.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=156396-2018.
Ref.n. AI 2017-0199. 15/18.
Discontinued - Invitation to tender deadline 14.05.2018 postponed to 25.05.2018, for the upgrading of the technical equipment in the Piet Hein (1,492 m) tunnel in Amsterdam has been discontinued. Contact Amsterdam Municipality, Amsterdam, tel +31 630475883, email inkoopfysiek@amsterdam.nl. Visit
http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=453659-2018
and
http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=196949-2018.
Ref.n. AI 2017-0199. 42/18.
Prior information notice without call for competition for an
information meeting about the refurbishment of the 1492 m Piet Hein tunnel in
Amsterdam.
The meeting will be held on 25.04.2019 2019 in the morning
at the Amsterdam-Duivendrecht. To register send a registration email to aanbestedingwegtunnels@amsterdam.nl
before the 18.04.2019. Contact Amsterdam Municipality, Lisa Monchen,
Amsterdam-Duivendrecht, email aanbestedingwegtunnels@amsterdam.nl.
Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=169283-2019.
15/19.
Restricted invitation to tender, deadline 31.05.2019, for maintenance of technical installations in De Michiel de Ruijter tunnel on the S100, the IJ-tunnel on the S116 and the Spaarndammer tunnel in Amsterdam. The contract duration will be 12 months.
For bid documents
https://www.tenderned.nl/tenderned-web/aankondiging/detail/publicatie/akid/67b55d4b0a777d1e32ef88fb11011038
where offers must be sent. Contact Amsterdam Municipality, Amsterdam, tel
+31 630475883, email inkoopfysiek@amsterdam.nl. Visit
http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=203911-2019.
Ref.n. AI 2019-0207. 18/19.
Competitive dialogue , deadline 20/06/2019, for renovation of the Piet Hein tunnel (1.492 m) connecting the centre of Amsterdam with the Zeeburger Island and the A10 motorway ring road. Duration contract from 27/02/2020 to 01/11/2022. For bid documents and for electronic submission of tenders click here.
Contact Municipality of Amsterdam, attn Annette Biesboer, Amsterdam, email aanbestedingwegtunnels@amsterdam.nl . For further tender information please click here.
Heijmans and Siemens Mobility secured the EUR70 million contract (excluding VAT), for renovation of the Piet Hein tunnel (1.492 m) connecting the centre of Amsterdam with the Zeeburger Island and the A10 motorway ring road. Due to intensive use, the tunnel’s civil engineering and structural works require a major overhaul. In addition, the tunnel’s technical installations and systems, and their operation, have reached the end of their technical service life and must be replaced.
Contact Municipality of Amsterdam, attn Annette Biesboer, Amsterdam, email aanbestedingwegtunnels@amsterdam.nl . For further tender information please click here and here. 18/20.
Competitive dialogue, deadline 16/09/2022, for road tunnel technical consultancy services for the Tunnel management organization (TBO) and the AWA - Aanpak Wegtunnels Amsterdam plan of the Municipality of Amsterdam. The municipality of Amsterdam has 5 road tunnels - IJ(1040 m), Piet Hein (1490 m), Spaarndammer (470 m), Michiel de Ruijter (300 m) and Arena (210 m) - 1 cables and pipeline tunnel (500 m) and a traffic control center under management and maintenance. For tender documents please click here, where tenders must be sent. Duration of the contract will be 48 months. Contact Amsterdam Municipality, attn Nienke Keus, Amsterdam, email info@tenderned.nl and for further information Via TenderNed, De Haag, email info@TenderNed.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=376632-2022. 28/22
Netherlands-Amsterdam: Engineering services
2022/S 132-376632
Legal Basis:
Directive 2014/24/EU
Section I: Contracting authority
I.1)Name and addresses
Official name: Gemeente Amsterdam
National registration number: 56492684
Postal address: Entrada 702
Town: Amsterdam
NUTS code:
NL Nederland
Postal code: 1114 AA
Country: Netherlands
Contact person: Nienke Keus
E-mail:
info@tenderned.nl
Internet address(es):
Main address:
http://www.tenderned.nl
I.5)Main activity
General public services
Section II: Object
II.1)Scope of the procurement
II.1.1)Title:
Raamovereenkomst Technische adviesdiensten wegtunnels
II.1.2)Main CPV code
71300000 Engineering services
II.1.3)Type of contract
Services
II.1.5)Estimated total value
II.1.6)Information about lots
This contract is divided into lots: no
II.2)Description
II.2.3)Place of performance
NUTS code: NL Nederland
II.2.6)Estimated value
II.2.7)Duration of the contract, framework agreement or dynamic purchasing system
Duration in months: 48
This contract is subject to renewal: yes
Description of renewals:
Indien de voorbereiding van de IJtunnel en/of de Arenatunnel binnen de eerste 4 jaar aanvangt en (de uitvoering van) het project uitloopt tot na die eerste 4 jaar, heeft de gemeente de optie om de raamovereenkomst twee maal met één jaar te verlengen.
Section IV: Procedure
IV.2)Administrative information
IV.2.2)Time limit for receipt of tenders or requests to participate
Date: 16/09/2022
Local time: 15:00
IV.2.3)Estimated date of dispatch of invitations to tender or to participate to selected candidates
IV.2.4)Languages in which tenders or requests to participate may be submitted:
Dutch
Section VI: Complementary information
VI.5)Date of dispatch of this notice:
07/07/2022
Arcadis Nederland B.V. from Arnhem secured the EUR 17 million contract, excluding VAT, for road tunnel technical consultancy services for the Tunnel management organization (TBO) and the AWA - Aanpak Wegtunnels Amsterdam plan of the Municipality of Amsterdam. The municipality of Amsterdam has 5 road tunnels - IJ(1040 m), Piet Hein (1490 m), Spaarndammer (470 m), Michiel de Ruijter (300 m) and Arena (210 m) - 1 cables and pipeline tunnel (500 m) and a traffic control center under management and maintenance. Contact Amsterdam Municipality, attn Nienke Keus, Amsterdam, email info@tenderned.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=229062-2023. 16/23.
Netherlands,
Zeeland
- nl/26
Road
Closing Date:
14.09.2009 (Tender Closed)
Competitive dialogues, deadline 14.09.2009, for design and construction of the 1 km-long twin tube Sluiskil tunnel passing 30 m beneath the Gent-Terneuzen canal with maximum 4.5% gradients. Contract duration 01.10.2010-01.12.2014. Contact H. Dingemanse at BV Kanaalkruising Sluiskil (BV KKS), Postbus 104, NL-4530 AC Terneuzen, tel +31 115647657/628902504, e-mail aanbesteding@sluiskiltunnel.nl Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=185223-2009 29/09.
Invitation to tender by negotiated procedure, deadline 29.03.2010, for insurance contract during the construction of the 1.4 km-long twin tube Sluiskil tunnel passing 30 m beneath the Gent-Terneuzen canal. Contract duration: 01.11.2010 - 01.04.2015. Time limit for accessing documents: 08.03.2010. Further information, specs and docs from F. Brandjes, Aon Nederland, Makelaars in Assurantiën en Risico-adviseurs, Amsterdam, tel +31 654627930, e-mail frits_brandjes@aon.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=056067-2010. 09/10.
Award of contract, value EUR208 million, for construction of twin-tube, 1.15 km-long Sluiskil tunnel under Ghent-Terneuzen canal to Wayss & Freytag. Read the press release and visit tunnelbuilder archive nl/26 for project background. 50/10.
Anuncio de información previa de Gemeente Zwolle indicando que el inicio de los procedimientos de adjudicación para la construcción de un túnel y una carretera será el 01.10.2009. El contrato empezará el 01.03.2010 para finalizar el 30.09.2011. Contacte con Dhr B Askamp, NL-8000 GA Zwolle, teléfono: +31 384982762, correo electrónico: aanbestedingEEC@zwolle.nl. http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=179218-2009 28/09
The EUR 3 million contract, excluding VAT, for the 2025-2033 operation and management of the 1150 m-long Sluiskil tunnel was not awarded. Contact Rijkswaterstaat Programma's, attn Marilyn Inge, Utrecht, tel +31 615609651, email Aanbestedingsteam-GWW@rws.nl. . Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=535056-2022 and http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=524988-2022. Ref.n. AT-2022-18. 39/22.
Ex ante announcement for the award to NV WST (N.V. Westerscheldetunnel) from Borssele of the EUR3 million contract, excluding VAT, for 2025-2033 operation and management of the 1150 m-long Sluiskil tunnel. Value of the contract is EUR3million contract, excluding VAT. Contract duration 2025-2033. Contact Rijkswaterstaat Programma's, attn Marilyn Inge, Utrecht, tel +31 615609651, email Aanbestedingsteam-GWW@rws.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=535916-2022. Ref.n. AT-2022-18. 40/22.
Netherlands,
Zwolle
- nl/25
Road
Prior information notice from Gemeente Zwolle indicating scheduled start of award procedures for road and tunnel construction will be 01.10.2009. Contract to commence 01.03.2010 for completion 30.09.2011. Contact Dhr B Askamp, NL-8000 GA Zwolle, tel +31 384982762, e-mail aanbestedingEEC@zwolle.nl http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=179218-2009
Open invitation to tender, deadline 03.12.2010, for construction of Ceintuurbaan road and tunnel project, period 2010-2014. Further information, specs and docs from Dhr B Askamp at Gemeente Zwolle, tel +31 384982762, e-mail aanbestedingecc@zwolle.nl, www.aanbestedingskalender.nl to whom tenders or requests to participate must be sent.Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=334083-2010. 45/10.
Award of contract no 1 for Ceintuurbaan road and tunnel project, value EUR3,627,000 excluding VAT, to Combinatie Schagen Infra BV/Salverda BV of Zwolle. Further information from Dhr B Askamp at Gemeente Zwolle, tel +31 384982762, e-mail aanbestedingecc@zwolle.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=023668-2011. 04/11.
Invitation to tender using restricted procedure, deadline 14.07.2011, for design, civil construction and E&M installation works for 680 m-long Boxem rectangular concrete marine tunnel on N331. Contract commences 01.02.2012 for completion 18.12.2013. Further information from Dhr A C W van beek at Gemeente Zwolle, tel +31 384982456, e-mail aanbestedingECC@zwolle.nl. Specs and docs from www.aanbestedingskalendar.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=188512-2011. 24/11.
Bouwbedrijf Salverda BV (ZG 't Harde) secured the EUR7,366,000 contract, VAT not included, for design, civil construction and E&M installation works for 680 m-long Boxem rectangular concrete marine tunnel on N331. Contact Mr A C W van beek at Gemeente Zwolle, tel +31 384982456, e-mail aanbestedingECC@zwolle.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=165683-2012. 22/12.
Netherlands,
Delft
- nl/24
Railway
Negotiated procedure, deadline 5th June, 2006 for design and build contract to replace a railway viaduct in Delft by a 1.8 km tunnel and an underground station. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=090301-2006, OJ S 85, or contact ProRail, Utrecht, fax +31 302356341. E-mail aki@prorail.nl 20/06.Belgian building company CFE and its partners Dura Vermeer and Haverkort Voormolen TBI Infra have won a contract from ProRail for the first phase of a project to build a rail tunnel in the Dutch city of Delft. CFE has a one-third stake in the Combinatie Cromme Lijn (CCL) joint venture. The "spoorzone Delft" (rail zone Delft) project, valued at EUR354 million, consists of the design and construction of a 2,300 m-long cut-and-cover tunnel for two and in the future four tracks, including a new railway station, a public transport junction and an underground car park for 650 vehicles. The joint venture will start preparatory work in August in order to begin construction in the second half of 2009. The station and the first two tracks should be operational by 2013. Visit www.cfe.be, www.duravermeer.nl, www.haverkortvoormolen.nl and www.gemeentedelft.info/spoorzone 31/08.
Invitation to tender by negotiated procedure, deadline 04.05.2009, for ten years inherent defect insurance starting 15.07.2016 for 1.814 m-long cut and cover tunnel with 268 m-long entrances to be constructed in Delft. For details of construction contract visit tunnelbuilder archive nl/24. For specs and docs, tenders, or requests to participate, contact Frits Brandjes at Aon Nederland in Amsterdam, tel +31 204305-615, fax -769, e-mail frits_brandjes@aon.nl. http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=095447-2009 15/09.
Negotiated contract for inherent defect insurance with coverage for 10 years for 1,814 m-long rail tunnel awarded to HDI/Allianz/Nassau/AXA. For more contact Bob Vandenberg at ProRail BV in Utrecht, e-mail bob.vandenberg@prorail.nl. For project history visit tunnelbuilder archive nl/24 and for more bid details go to http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=005922-2010. 01/10.
Restricted invitation to tender, deadline 29.02.2016, for preventive and corrective maintenance in the eastern tube of the 2.3 km William of Orange tunnel in Delft. Duration of the contract is from 01.09.2016 to 31.12.2019 with the availability to extend up to 9 years. For electronic access to information and submission of tenders https://www.tenderned.nl:443/tenderned-web/aankondiging/detail/samenvatting.xhtml?aankondigingId=74187. Contact ProRail BV, att.n Charlotte Pars, Utrecht or e-mail aanbestedingen@prorail.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=42789-2016. Ref.n. L-004910. 06/16.
ICT Automatisering Nederland BV from Barendrecht secured the EUR188,383 contract, excluding VAT, for preventive and corrective maintenance in the eastern tube of the 2.3 km William of Orange tunnel in Delft. For electronic access to information https://www.tenderned.nl:443/tenderned-web/aankondiging/detail/samenvatting.xhtml?aankondigingId=85259. Contact ProRail BV, att.n Charlotte Pars, Utrecht or e-mail aanbestedingen@prorail.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=234184-2016. Ref.n. L-004910. 27/16.
Netherlands,
Amsterdam
- nl/23
Highway
Preinformation procedure for design, build, finance and maintenance contract under a 30-year concession and PPP project for the second Coen tunnel (6 years for design and building and 24 years for maintenance) under the North Sea canal on Amsterdam's orbital highway A10. The project also contains renovation and maintenance of the first tunnel (587 m). The new tunnel will add two new tubes to the existing twin-tube tunnel. A project presentation will be held on 30th June, 2005 at the Sheraton Amsterdam Airport Hotel and Conference Centre, tel. +31 203164300 or visit www.sheraton.nl. Visit http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=114564-2005, OJ S 116, or contact Ministry of transport, public works and water management, Zwanenburg, tel. +31 235557264. E-mail m.e.werdmuller-djong@dnh.rws.minvenw.nl 25/05.Restricted call for tenders, deadline 15th September, 2005 for design, build, finance and maintenance contract under a 30-year concession and PPP project for the second Coen tunnel under the North Sea canal on Amsterdam's orbital highway A10. The project also contains renovation and maintenance of the first tunnel (587 m). The new tunnel will add two new tubes to the existing twin-tube tunnel. Visit http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=141447-2005, OJ S 142, or contact Ministry for transport, public works and water management, Haarlem, tel. +31 235557200. E-mail tender@coentunneltrace.nl 31-32/05.The Coentunnel Company BV consortium, led by Dura Vermeer and made up of VINCI Concessions, VINCI Construction's subsidiaries CFE and Dredging International, Besix, TBI and Arcadis has just been named preferred bidder for the Coen tunnel in Amsterdam. The project, with a total value of approximately EUR500 million, covers the financing, design and construction of a twin-tube immersed road tunnel (3+2 lane) as well as renovation of the existing 590 m twin-tube tunnel and operation of both tunnels for a period of 30 years. The works, which will take five years to complete, will be carried out by a consortium made up of VINCI's subsidiaries VINCI Construction Grands Projets, CFE and DEME, as well as TBI, Dura Vermeer and Besix. The Coen tunnel connects the city centre with northern Netherlands. Visit www.duravermeerinfra.nl, www.vinci.com, www.cfe.be, www.dredging.com, www.deme.be, www.besix.com, www.tbi.nl and www.arcadis.nl 30/07.The Coentunnel Company BV consortium, formed by VINCI Concessions and VINCI Construction's subsidiaries CFE and Dredging International, together with Dura Vermeer, Arcadis, Besix and TBI, signed on 22nd April, 2008 the concession contract for the Coen tunnel in Amsterdam with the Dutch Minister for Water and Public Works. The project, worth over EUR595 million in total, calls for the financing, design and construction of an immersed, 8-lane road tunnel, refurbishment of the existing 600 m tunnel and maintenance of both tunnels for a period of 30 years. The concessionaire will receive an income in the form of an annual payment paid by the concession-awarding authority. The amount will depend on the actual availability of the tunnel infrastructure to users, which connect the centre of Amsterdam with the northern part of the Netherlands. The works will last five years and will be carried out by a consortium made up of VINCI Construction Grands Projets and VINCI Construction's subsidiaries CFE and DEME, along with TBI, Dura Vermeer and Besix. Visit www.vinci.com, www.cfe.be, www.dredging.com, www.duravermeerinfra.nl, www.arcadis.nl, www.besix.com, www.tbi.nl and www.deme.be 18/08.
