Monitoring of coastal waters in the Hardanger River Basin, 2019

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 2019 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 2019, the program comprised stations in Sørfjorden inner part (ID 0260040900-1-C) and Sørfjorden outer part (ID 0260040900-2-C), as well as the following quality elements: In the water column: Secchi depth, temperature, salinity, oxygen, metals and fluoride. In biota: Metals and PAHs in mussels. Biological quality elements were not evaluated in 2019. (...)