NERT Community Information and Document Repository

Nevada Environmental Response Trust (NERT) Site for Cleanup and Community Information at the Black Mountain Industrial (BMI) Complex in Henderson, Nevada.

This website includes a summary of NERT Site information, as well as more detailed information about the Site’s operational history, historical regulatory actions and investigations, active groundwater treatment systems, Remedial Investigations, Risk Assessments, and Feasibility Study.

Documents

In accordance with the approved Community Involvement Plan (CIP), project documents are available to the public in a document repository at the NDEP office located at 375 E. Warm Springs Road, Suite 200, Las Vegas, Nevada.

Documents approved by NDEP are also available on this website.

Key Facts

NDEP has been sharing its progress on the cleanup with the community since 2007; this website, as well as annual fact sheets, provide updated information to the public on activities at the NERT Site.
The cleanup of groundwater contaminated by former operations at the NERT Site began in 1987 and continues today. Since treatment began, the total amount of perchlorate removed is approximately 13.3 million pounds, with about 199,000 pounds removed in 2025.
Groundwater is not a source of drinking water in the City of Henderson.
The groundwater extraction and treatment system (GWETS) has reduced the amount of perchlorate contamination from the NERT Site entering the Las Vegas Wash, which flows into Lake Mead, by more than 90% relative to levels in the year 2000, increasing the overall water quality of Lake Mead and the downstream Colorado River.
Investigations regarding the nature and extent of contamination are complete for offsite areas downgradient of the NERT Site. Additional investigation of the shallow soils at the NERT Site is planned for 2026.
Three key documents assessing area investigations and future cleanup evaluations were submitted by NERT in 2024 and 2025, representing close to 20,000 pages of material. These reports are the Remedial Investigation Report for OU-1 and OU-2, Revision 2 submitted on February 13, 2024, which was approved by NDEP on February 26, 2024; the Las Vegas Wash Bioremediation Pilot Study Results Report, Revision 1 submitted on June 28, 2025, which was approved by NDEP on September 15, 2025; and the Remedial Investigation Report for OU-3 submitted on June 26, 2025, which is currently under NDEP review.
Various groundwater treatment options are currently being evaluated to determine the best long-term cleanup solutions.