Five-Year Review Services – California Gulch Site

The contract requires the performance of a Five-Year Review at the California Gulch Superfund site, focusing on evaluating the long-term effectiveness of implemented remedies, assessing ongoing exposure pathways, and conducting a comprehensive site visit to gather current environmental and engineering data. The work must include an analysis of whether the selected cleanup measures continue to protect human health and the environment as intended, with particular attention to changes in land use, ecological conditions, and contaminant migration patterns. All findings must be compiled into a formal report that undergoes rigorous review and approval by the U.S. Environmental Protection Agency before submission. The contract is issued as a subcontract under NAICS code 541620, which classifies environmental consulting services, and is managed by the Colorado Department of Public Health and Environment. The solicitation was posted on July 20, 2026, with responses due by July 27, 2026, indicating a tight turnaround timeline for proposal submission. The place of performance is in Colorado, specifically centered on the California Gulch site, and the work is part of the ongoing federal Superfund program obligations. While no set-aside provisions or point of contact details are provided, the contractor must ensure full compliance with EPA standards and protocols for remediation evaluations and report documentation.