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0 • • <br />Environmental Protection Plan, Schwartzwalder Mine 11-15 <br />600 <br />500 <br />400 <br />rn <br />E <br />z <br />0 <br />Q 300 <br />o: <br />z <br />w <br />0 <br />z <br />0 <br />0 <br />200 <br />100 <br />0 <br />Jan-98 <br />Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-06 Jan-07 Jan-08 Jan-09 Jan-10 Jan-11 <br />-Na * C. - HCO3 -$04 <br />Figure 11-4. Trends in Major Ion Concentrations at Station SW-BPL, 1998 - 2010 <br /> <br /> <br /> Shutoff <br /> Sump1 <br /> Recirc. <br /> hutoff sump <br /> and VVFP <br /> <br /> i <br /> i <br />i ? <br /> <br /> <br /> <br />4109C.100731 Whetstone Associates •