Mineral and royalty owners say there's about $180 billion in untapped oil in the Watternberg field.
Meanwhile, oppositional group Colorado Rising for Health and Safety has just $174,299.90 in cash on hand.
Anadarko Petroleum, the state’s largest driller, posted a profit in first quarter 2018 of $121 million.
Former Anadarko Petroleum cited in the suit say the company had only "a skeleton crew" left for safety and repairs.
Two weeks after an Anadarko contribution, Protect Colorado spent $550,000 on signature gathering for the upcoming election.
The biggest change came in February when regulators changed how flowlines are created, tested and eventually abandoned.
The company shut down hundreds of wells after an April 2017 explosion killed two people in Firestone.
CPR News found a common practice designed to let oil and gas companies maintain ownership of old holdings.
Thirty-two-year-old Oscar Lopez Velasquez died in the explosion.
For about three years, oil and gas drillers have suffered through low oil prices. In fact, they haven’t been this low for this long in more than a decade.