Five-Year Review Services – Chemical Sales Co. Site

A five-year review is required at the Chemical Sales Co. site to assess the long-term performance of environmental remedies, involving comprehensive site characterization, evaluation of potential exposure pathways, and determination of remedy effectiveness. The scope includes collecting and analyzing environmental data, interpreting results in the context of regulatory standards, and documenting findings in a formal report that supports future decision-making. This effort ensures continuing compliance with environmental protection requirements and validates that selected cleanup measures continue to protect human health and the environment over time. The work is being procured as a subcontract under NAICS code 541620 by the Colorado Department of Public Health and Environment, with proposals due by July 27, 2026, and the contract expected to be awarded following the solicitation process.