# Site investigations for HDD crossing at Roskilde Fjord - LOT A

- **Source:** TED · `757298-2024`
- **Buyer:** Energinet Eltransmission A/S
- **Published:** 2024-12-11
- **Deadline:** —
- **Estimated value:** 6,041,234 DKK
- **CPV codes:** 71351200
- **NUTS codes:** DNK
- **Notice type:** can-standard / 30

## Description

The scope of work includes performance of site investigations for one HDD location: 1. Roskilde Fjord, HDD range approximately 1700 m. The site investigations include: • Work Package A (Lot 1) - Geophysical investigations with electrical resistivity mapping of the geology to identify shallow soft soil, low and high resistivity units between boreholes and homogeneity and fractureness of pre-quaternary soil units (Danien Chalk). Detailed seismic mapping down to at least 50 m under the seabed. Furthermore, the seabed surface must be mapped with respect to water depth and surface characteristics. • Work Package B (Lot 2) - Geotechnical investigations with conventional geotechnical boreholes, CPT tests and laboratory tests, but also coreing of underlying pre-quaternary soil units of Danien Chalk, including advanced laboratory testing on selected samples (geological description). This package also includes geophysic well-logging. The results must be delivered as site investigation reports supported by profiles, charts as well as digital deliverables for both WP1 and WP2.

## Award result

- **Total awarded:** 6,041,234 DKK
- **Contract concluded:** 2023-11-13
- **Winner:** COWI A/S (Miljø, geoscience, spildevand, vand, affaldshåndtering, arbejdsmiljø) (CVR 44623528), Per Aarsleff A/S (CVR 37542784) · value 6,041,234 DKK · 6 bids received

## Original notice

https://ted.europa.eu/da/notice/-/detail/757298-2024