In the case of an HV transformer oil spill in favourable conditions (soil contamination only, no snow cover), the following items must be considered and will incur costs:
Note 1:
When an HV transformer oil spill extends to a wet area or water table, the costs increase dramatically to insure no contaminants reach the surrounding waterways.
Note 2:
When an HV transformer oil spill occurs on frozen ground and/or snow cover, all access roads and areas surrounding the transformer, as well as access to potentially contaminated areas must be cleared. Also, whenever possible, heated shelters need to be installed above open water, boats are needed to inspect the waterways and to remove any oil patches with specialized products.