B

1 environmental issue-A significant environmental concern or condition associated with a property is typically identified during environmental due diligence assessments. These issues are categorized based on their severity and potential impact on human health or the environment, with B-1 being one of the highest priority classifications. B-1 environmental issues include the presence of hazardous substances, contamination of soil or groundwater, or other conditions requiring remediation to address potential risks to occupants or the surrounding environment.