"In compliance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and the National Contingency Plan (NCP), BZC [Blackwell Zinc Company] and the DEQ conducted a Five-Year Review of the RAs implemented at the BZS SRU. A site visit to evaluate the BZS SRU RAs was performed on February 4, 2003. This report documents the results of this review. [...] According to OSWER No. 9355.7-03B-P guidance document, the purpose of the Five-Year Review is to determine whether the remedy at a site is protective of human health and the environment."--P. 8.