See Glossary for defined terms. See Note 2 to the Financial Statements for a summary of the Ambit Transaction. In addition, the ERCOT segment was renamed the Texas segment. Extreme weather conditions can also lead to scarcity conditions regardless of season. The balance is cleared through the seasonal and monthly capacity auctions. SafetyVistra\'s mindset around safety is exemplified by our motto: Best Defense. In 2020, we did not have any serious injuries or fatalities to our Vistra employees. Several of the EPA agency actions discussed below are now subject to this review. Luminant intervened on behalf of the EPA in the Fifth Circuit Court action. Briefing is underway on the proper venue for any challenge to the final rule. As finalized, we expect that we will be able to comply with the rule. The EPA SSM guidance is subject to the Environment Executive Order discussed above. On October 18, 2019, the EPA took final action denying New York\'s petition. We filed comments on the proposal in January 2020. We are addressing these CCR surface impoundments in accordance with the federal CCR rule. These factors, in addition to others specifically addressed in Item 7. In addition, we currently maintain non-investment grade credit ratings. We may not be able to obtain or maintain all required environmental regulatory approvals. Any such reduction in demand could have a material adverse effect on us. Our ability to procure such labor is uncertain.
