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E6 Taraldrud alunskifer deponi

Issued by Statens vegvesen · via Doffin — Norwegian Public Procurement

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Published
19 Oct 2026
Closes
11 Nov 2026, 11:00 UTC
Reference
2026-116289
Location
Akershus, Norway
Sector
Water & Environment

At a glance

Statens vegvesen in Norway has published a tender in water & environment: “E6 Taraldrud alunskifer deponi”. Submissions close on 11 November 2026, 22 days from today. Quote reference 2026-116289 in any correspondence with the buyer. FreeTender has recorded 60 notices from this buyer since 2026, 30 of them currently open. There are 127 open water & environment notices in Norway on FreeTender. Bids are submitted to the buyer through Doffin — Norwegian Public Procurement, not through FreeTender.

Details

Ved Taraldsrudkrysset på E6 i Nordre Follo kommune er det gjennom en rekke undersøkelser påvist fyllmasser forurenset av alunskifer/svartskifer. Forurensningen skyldes at området i en periode fra 1980 til 1990-tallet ble brukt til utfylling med overskuddsmasser bestående av alunskifer/svartskifer fra flere byggeprosjekter i Oslo sentrum. Alunskifer er en sulfidholdig bergart som er kjent for å ha et syredannende potensiale når den eksponeres for oksygen og vann. Forvitringsprosessene medfører redusert pH og utlekking av tungmetaller.

Arealet for tiltaksområdet er estimert ca. 22 000 m2. I forbindelse med opprydningstiltak på Taraldrud skal skiferfyllingen dekkes til med membran og leire. I tillegg til tildekking, skal deler av Snipetjernbekken legges i rør (ca. 165m), og dagens fellingsdammer skal reetableres. Deler av området skal avlastes for å sikre geoteknisk stabilitet, og det er planlagt at 1,5 meter av toppmassene i disse områdene skal fjernes. Det skal også etableres avskjærende grøfter for å hindre vanngjennomstrømning og videre spredning av forurensning fra de deponerte skifermassene. Planlagt gravedybde for grøfter langs vei er ca. 1,2 meter og dybde for avskjærende grøfter for fellingsdammen er ca. 0,7 meter.

Buyer: Statens vegvesen

Place of performance: Akershus

Full notice and tender documents are on Doffin (Norwegian).

Context for bidders

We hold 60 notices from Statens vegvesen, going back to August 2026 — 30 of them still open. They buy mostly in Construction & Infrastructure, Financial & Professional Services and IT & Telecom. There are 127 open Water & Environment tenders in Norway. This one closes in 22 days.

Before you bid on this tender

A quick checklist to help you decide whether to bid and prepare a compliant submission for this water & environment opportunity. Always verify the details on the official source.

  • Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
  • Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
  • Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
  • Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
  • Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
  • Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
Common bidding mistakes to avoid →Writing a winning proposal

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