The DCIP measurements at the Hagfors site are continuing their second week and so far the weather has been very varied, experiencing both sunburn and snow storm. The schedule is to measure one line each day since the terrain is tough and it takes time to aquire data from long lines. The aim of the measurements is to map PCE spreading and geology at the secondary source. Four lines have been made starting at the east side of the flat area at Örbäcken, going up the steep slope, traversing across the plateu, and continuing down to Örbäcken on the west side. For one of the lines it was necessary to build a small bridge in order to cross Örbäcken.
Today one line have been carried out in the creek along the river on the east side of the plateu. Dense vegetation and slippery soil has a been a challenge. The plan for the coming days in the field is to make two more lines in north-south direction at the plateu, and a detailed survey of the subsurface at the creek downstream the secondary source. In this area high degradation of PCE is expected. With the data aquired we are hoping to detect zones of free phase PCE, degradation zones, fine grained bodies leaching PCE and other features in the subsurface important for understanding the pollutant situation. The geophysical data will be correlated with data from samples taken from both water and soil. This data is carefully collected at the same time fully focusing on the health and security issues.
/ Anna & Hedda MSc students