Department of the Interior OIG

We assessed NPS’ process for estimating and adjusting project cost estimates for construction contracts awarded using GAOA funds.

We assessed whether USGS administered a cooperative agreement with the Colorado School of Mines for a new facility in accordance with requirements.

NPS generally manages its wastewater systems effectively but has opportunities for improvement.

To learn how communities across the nation responded to the pandemic, we initiated a multi-part review of six communities—two cities, two rural counties, and two Tribal reservations. This report is the fourth community-specific report and focuses on our work in White Earth Nation Reservation in...

We audited WSFR grants awarded by FWS to the District of Columbia Department of Energy and Environment to ensure compliance and cost allowability.

Indian Affairs has taken actions to correct operational issues at BIA-funded and/or -operated detention facilities, but challenges remain.

Texas properly expended IIJA orphaned well initial grant funds and fulfilled program goals.

We found that an oil and gas company used natural gas from a Federal lease to power cryptocurrency mining operations without authorization.

This management advisory highlights the risks associated with DOI awarding grants to the Illinois Department of Natural Resources.

We identified risks associated with a contractor BIE hired to assist in resolving inaccuracies in BIE’s facility management system.