If we were really serious about managing the the risk of carbon dioxide release to the atmosphere, then we would consider another concept:
Change Carbon Capture and Storage to Carbon Capture and Use. Built multi-story green houses in cities. Pipe the carbon dioxide from places it’s not wanted to these green houses inside of cities. Grow food in these green houses. As the food grown near the population, then it reduces transportation costs too.
Meantime, I’d like to understand more fully the risk (which means articulating and evaluating probability and impact).