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i _ J <br /> September 1996 -1- 963-2128.002 <br /> SUMMARY <br /> Golder Associates Inc. (Golder) was commissioned by Climax Molybdenum Company, <br /> Climax Mine (Climax) to perform a literature review and available data summary concerning <br /> the potential phytotoxicity of Cu contained in biosolids applied to the Robinson Tailings <br /> Impoundment. The goal of the literature review and data summary is to adequately address <br /> the Division of Minerals and Geology's (DMG) stipulation to Reclamation Permit No. M-77- <br /> 493: Technical Revision(TR) - 009. <br /> The DMG stipulation is as follows: <br /> The operator must provide a demonstration that the nature and <br /> concentration of Cu in the biosolids will not inhibit revegetation of the <br /> land application areas. This demonstration must be reviewed and <br /> accepted by the division prior to initial land application of biosolids. <br /> To address the DMG stipulation Golder has compiled salient literature regarding the <br /> regulatory and scientific aspects of the land application of biosolids and the probable plant <br /> response to the Cu component contained in biosolids. Biosolids and plant tissue analytical <br /> methods and laboratory results will also be presented. Based on applicable regulations, <br /> available data, analytical methods performed and literature presented below, Golder <br /> concluded that there is a low probability of Cu-induced phytotoxicity in plants established on <br /> the Robinson Tailings Impoundment amended with biosolids. <br /> kMENM%212Fd12KXnLDM Golder Associates <br />