There is a concern that the oil may stick to bird feathers, and it is “unknown what effect this may have”, said the WRC. However, it is thought that krill oil will break down a lot quicker than mineral oils.
The WRC also said it was in contact with scientists regarding the impact this may have on the water quality for those who take water from the lake.
“Water samples have been taken for analysis and a water quality monitoring programme has been put in place to track any changes.”
Although krill oil is a popular dietary supplement, the WRC is recommending that people do not drink the water in the proximity of the crash site.
Local hapū, Ngāti Te Rangiita, have issued a rāhui over the area covering from Pūeaea (Waitapu Rd in Motutere) to Pākā Bay (Hallet’s Bay).
Signs have been put up at Te Pōporo (Bulli Point) and the Waipēhi Stream rest area.