Report estimates 60 percent of chemicals remain undeclared.
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A report released by environmental advocacy groups last week claims oil and gas companies haven’t been complying with a 2022 state law that requires them to disclose all chemicals used in hydraulic fracturing and drilling operations.
As a result, the analysis estimates operators have injected 30 million pounds of unknown chemicals into the ground throughout Colorado in the past 21 months. According to the report, Chevron and its subsidiaries make up over half of the undisclosed wells.
