What happens if CO2 does escape the storage site?
The Andernach cold water geysir – a natural CO2 vent Source: BGR Should CO2 gas – despite all safety measures – escape the storage site and make its way to the surface, it is relatively harmless compared to other gases, e.g. methane. It is neither flammable nor explosive, nor poisonous. Like other gases, it can cause problems for human health in higher concentrations. However, we know from natural CO2 emanations in the Eifel region that the vented CO2 mixes rapidly with air and is quickly diluted to breathable concentrations.
