How safe is sending CO2 in a pipeline and pumping it into the ground? Is CO2 dangerous?

HECA’s plant will be designed, constructed and operated to meet or exceed the highest local, state and federal environmental, safety and health standards to protect the public and plant workers. Carbon dioxide has been safely transported via pipeline and pumped underground for 40 years by energy companies around the world, including those in Canada and the United States. In the past, CO2 primarily came from naturally occurring underground reservoirs, where it was transported and then re-injected into oil fields to perform enhanced oil recovery in locations thousands of miles away. The HECA facility will capture CO2 that would have otherwise been emitted into the atmosphere. The CO2 will then be transported five miles away through a safe and secure pipeline to a nearby oil field where the CO2 will be injected over 6,000 feet beneath a layer of thick, impenetrable cap rock.

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