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x: z: Currently, the mine is owned by LKA Int., and operated by Au Mining. The methods by which water is managed at the site has evolved over time in response to site conditions and regulatory guidance. The underground features manage encountered water by use of an underground infiltration sump (as per direction provided by H. Posey/DRMS; 2000). The site also has a current stormwater plan that addresses stonnwater related to surface disturbance azeas on the mine. As part of the existing stormwater management practices, an evaporation sump is maintained on the Leve16 pad that captures any pad sheet flow from flowing offsite. Up unfil recently, there has been no concern raised in regazds to seeps located at the toe of the waste rock pile associated with the Leve16 pad, lazgely because these seeps have been non- existent. As previously described, the waste rock pile occurs on top of the historic Deadman Gulch channel. The Gulch is intermittent and flows only in response to substantial snow- precipitation yeazs. Therefore it stands to reason that the seep flow is closely associated to the Deadman Gulch flows, and not related to any water management strategy at the mine site. In order to delineate the water source that is related to the waste rock toe seeps, this Chemical Trace study was completed. A Chemical Trace study is designed based upon the premise that water can be `typed' by analyzing the water for common anion and cation content. The results from the various samples can be wmpazed to determine if samples aze of the same type, thereby delineating possible flow pathways. In this study, three possible sources of water were tentatively linked to the waste rock toe seep water. These include the underground managed water associated with the mine workings, stormwater infiltrated through the stormwater sump on the Leve16 pad surface, and Deadman Gulch base flows. Methods A single sampling event during spring melt conditions was completed in order to gather the various samples necessary for this study. On June 20, 2007 the Chemical Trace suite of samples were collected and included eight water samples and four solids samples. Figure 1 depicts a conceptual diagram depicting each sample location. A nan•ative description of each location is as follows; Surface Water Locations • SEEP (BKG): a seep adjacent to the Leve16 pad that occurs within the background setting for Deadman Gulch, • DM-BKG: a location within Deadman Gulch above the Leve16 pad area that would represent background, • WRT-A: a seep located at the toe of the Leve16 waste rock dump, • WRT-B: a seep located at the toe of the Leve16 waste rock dump, • DM-MZ: a location downgradient of the WRT locations that captures the mixing zone of the combined flows from the WRT seeps, • DM@HWY149: Deadman Gulch at the Highway 149 crossing, and • SUMP: the underground sump within the Leve16 mine workings • SUMP-DUP: a field created duplicate for the SUMP location. Results were used for Quality Assurance/Quality Control purposes. Page 8 of 16