Comprehensive Five‐Year Review, Former Naval Industrial Reserve Ordnance Plant (NIROP), Pomona, CA.

This task order was to conduct a Five-Year Review for former Naval Industrial Reserve Ordnance Plant in Pomona, California.

This task order includes the completion of a Five-Year Review for the former NIROP that is currently owned by the City of Pomona, California. GCE performed all necessary activities (e.g., documents review and site visits) to prepare a Five-Year Review document for NIROP Pomona in accordance with the applicable U.S. Environmental Protection Agency (US EPA) and U.S. Navy policy, to ensure that Land Use Controls (LUCs) were in place and were protective.

The NIROP facility was a federally-owned, but privately-operated Department of Defense manufacturing center from 1952 until the facility was closed in 1994 and returned to the U.S. Navy on December 31, 1994. Facility activities included metal machining and finishing, plating, painting, photo-processing, chemical storage, wastewater treatment, and research and development.

Various remedial activities were conducted at the NIROP facility since the mid-1980s, including excavation and offsite disposal of soil contaminated with metals including copper, chromium, hexavalent chromium, nickel, lead, and cadmium. Soil was also contaminated with volatile organic compounds and semi-volatile compounds which included ethylbenzene, styrene, toluene, 1,1,1-trichloroethane, m,p-xylenes, o-xylene, methylene chloride, and phenol. Soil remediation activities achieved the site-specific cleanup goals at levels protective of human health and the environment under industrial (i.e., non-residential) conditions.

Accordingly, a LUC that includes restrictions on land uses and activities at the former NIROP was executed on November 12, 1997 and amended on June 3, 2013.