Hazardous Barrel Survey Report for Fyrskeppet

This document is a survey report detailing the geophysical survey conducted in the Fyrskeppet area, specifically focusing on the assessment of hazardous barrels. The survey aimed to map the seabed surface and subsoil, addressing seabed analysis, surface sediments, and potential archaeological findings, while also identifying any obstacles that could impact the installation of a planned windfarm. The area surveyed spans 535 km², located in the Bay of Bothnia, near a known dumping site for mercury waste barrels. The report includes geodetic information, survey operations, and results, with an emphasis on the methodologies employed, such as multibeam echo sounder (MBES) and sub-bottom profiling (SBP). The document also outlines the roles of key personnel involved in the project and references related documents that provide additional context and procedural details. The findings are intended to inform stakeholders about potential environmental hazards in the region.