by Mark Olalde, ProPublica, and Nick Bowlin, Capital & Main

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Oklahoma’s oil and gas industry touts its altruism and environmental stewardship by pointing to a voluntary levy that companies pay on their production, which is then used to clean up orphan wells that have been left to the state.

But some of Oklahoma’s biggest oil companies have opted out of the fund, forcing the state to return millions of dollars that would have otherwise gone to restoring land scarred by discarded drilling infrastructure and contaminated by leaks and spills, according to a ProPublica and Capital & Main analysis.

The list of companies that received such refunds includes some of the Oklahoma oil industry’s household names, such as Ovintiv and Chesapeake Energy Corp. It also includes the two richest people in the state: Harold Hamm, a pioneer in fracking technology and the founder of the multibillion-dollar Continental Resources, and George Kaiser, whose success as head of his family’s oil company helped him buy the Bank of Oklahoma.

All told, dozens of oil companies received refunds worth about $11 million over the past seven years, ProPublica and Capital & Main found. Put another way, for every $100 the state brought in via this funding mechanism, it sent $8.58 back to oil companies.

The Oklahoma Energy Resources Board, created by the Legislature in 1993, collects a 0.1% assessment on oil and gas production that functions like a tax on the state’s largest industry. The roughly $163 million collected — after refunds — since the levy’s inception has funded the restoration of more than 20,000 sites.

If the board had not had to issue the millions of dollars in refunds, it could have restored an additional 1,500 orphan well sites, according to the board’s average cleanup bill. Until they are plugged, these wells can leak a litany of pollutants, from toxic gasses to salty wastewater, presenting an environmental crisis across Oklahoma.

ProPublica and Capital & Main reached out to all 76 companies that requested refunds in the past........

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