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P. manganese (Mn), aluminum (Al), barium (Ba), cadmium (Cd), chromium (Cr), lead (Pb), zinc (Zn), arsenic (As), selenium (Se), phosphorous (P), fluoride (F), boron (B), cobalt (Co), copper (Cu), lead (Pb) and mercury (Hg) (Deutsch, W.J., 1997). The major ion composition of water is used to classify it into various types based on the dominant cations and anions (Hem, J.D., 1989). For instance, if calcium and bicazbonate aze the dominant cation and anion, then the groundwater would be a Ca-HC03 type. The composition of the dominant ions was displayed graphically for each sampled location by several methods including ion-concentration charts, radial diagrams, Stiff and trilineaz diagrams etc. as shown in the attached Figures. Results indicate that the concentrations of anions and cations were low when converted to the graphics units which caused significant overlap in trends. Trends in the analytical results were best observed on a sample result point-by-point comparison (refer to Tables 1 and 2). The purpose of this study was to determine the flow pathways within the mine site that aze linked to the waste rock toe seeps. There were three hypothesized sources of the seep water which included the underground sump, the stormwater sump, and the base flows from Deadman Gulch. The comparison of the results by location indicate that the water quality chazacteristics of the waste rock toe seeps (WRT-A and WRT-B) aze closely associated to Deadman Gulch background water chemistry conditions. The analysis results of the seeps are compazable to both background locations (DM-BKG and SEEP (BKG)) as opposed to the underground sump location (SUMP) which contains significantly higher concentrations of all analvtes tested (Ca, Fe, Me. K. Si, Na, Si etc.). Measured concentrations of all anions and cations are within the same range as the background, vs. the sump results which aze consistently higher by a significant mazgin. The resulting water chemistry of the seeps is likely a wmbinarion of both the background water chemistry and the elutriate chemistry of all the solids analyzed. The solids elutriate results were all similaz. There was no single `trace' or identifying chemical signature that could help identify whether a single solid type is associated with a measured seep result. It appeazs the solids all contain similaz cation:anion amounts. However, the solid matrix most likely to be linked to the toe seep water chemistry would be the waste rock. The ore body is physically removed by significant distance from the seeps. Similazly, the stormwater sump only contains minor amounts of water on a seasonal basis. The alluvium represents a thin geologic veneer that likely contributes to `stormwater water chemistry' which would then be contained by the stormwater sump. The seeps emerge at the toe of the waste rock dump and have likely created a subterranean flow pathway at the bottom of the pile as a result of scour. The water chemistry is likely to be reduced since it represents headwaters water immediately submerged within the waste rock pile. This assumption is verified with the comparison of the seep results to the mixing zone (DM-MZ) which demonstrates a significant gain in most of the measured pazameters (and loss in pH) which is typical for a reduced pulse of water when in transition to an oxidized setting. The reduced (low pH) water will scour the waste rock and liberate minerals into solutes thereby creating a gain in ions. These liberation ions then equilibrate over time and distance and precipitate out onto solid surfaces (as observed with the ferrcrete within the channel) or colloids. This trend is also verified by comparison of the DM-MZ results to the Deadman Gulch location at Highway 149. By the time the water reaches this lower-most location, signicant amounts of anions and cations have precipitated out of solution. The conclusion that the waste rock toe seeps aze chemically similar to background, is further supported by the fact that a `physical' connectivity as evidenced by Deadman Gulch flow is cleazly linked to the presence of the seeps. To clarify, the underground sump is constantly Page 11 of 16