Monitoring of coastal waters in the Hardanger River Basin, 2018

Summary

DIHVA IKS designed a monitoring program for coastal water in the Hardanger river basin for 2017- 2021, on behalf of the companies Boliden Odda AS and Tizir Titanium & Iron AS. The program was approved by the Norwegian Environment Agency in a letter of 22.12.2016. The program for 2017 was carried out by NIVA, in collaboration with Hardanger Miljøsenter. In this program (2017-2021), measurements of the following quality elements should be carried out at certain stations in the water bodies Sørfjorden inner part (ID 0260040900-1-C), Sørfjorden outer part (ID 0260040900-2-C) and Samlafjorden (ID 0260040800-C): In the water column: Secchi depth, temperature, salinity, oxygen, metals and fluoride. On the sea bottom: Benthic fauna and sediments habitat characteristics, metals and PAHs in sediment. In biota: Metals in fish (tusk), metals and PAHs in mussels. In 2018, the program comprised stations in all above mentioned water bodies, as well as all the mentioned quality elements. In addition, fluoride in bone of fish (from the Sørfjord and a reference locality) is analysed. (...)