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. 4.0 SURFACE WATER <br />Trapper Mine monitored one stream site and twenty active NPDFS discharge sites <br />during 2003. The dream site Rume Gulch (S-i) was sampled during May and June 2003 <br />sampling to characterize spring flows at this location. Row was observed at NPDES sites <br />001, 002, 011, 020 and 021 in 2003. Baseline stream site Fist Pyeatt (S3) is also NPDFS <br />site 011. Sites were monitored weekly throughout the year. Sites NPDFS 003, 005, 006, <br />008, 009, 010, 012, 013, 014, 015, 016, 017, 018, 019 and 023 did not discharge during <br />2003. Maps No. 2-1 through 2-3 show the kxations of these surface_water sites. <br />4.1 SURFACE-WATER FLOW <br />The 2003 flow dais tabulated in Append'a C in Table C-i represents instantaneous <br />measurements associated with NPDFS water-quality sampling. Surface runoff was higher <br />than normal in 2003 than 2002 at the Trapper Mine due to the three inches of greater <br />predpibtion. <br />Figures C-1 through C-4 pn~ent the ir~ntaneous fkmr versus time for the Trapper <br />NPDFS sites for 2003. Row occurred during the weekly samples between January 6, 2003 <br />and tune 3, 2003 at NPDFS 001. The hrgh flow during sampling was a flow of 5156 qpm <br />on March il, 2003. Typical high flows existed due to snowmelt at NPDES 001 and NPDFS <br />002 during 2003 with a peak sample flow of 1795 gpm from NPDFS 002 (see Figure C-2). <br />The 2003 peak flow for NPDFS 002 during the Spring snowmelt is greater than the 2002 <br />peak and the largest peak observed for several years. Surface flow at NPDFS 011 existed <br />during portions of March and April in 2003 with a peak of 205 gpm during sampling of this <br />srre (see Rgure C-3). No flows occurred at NPDFS 013 during 2003. Figure C-4 shows that <br />4-1 <br />