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Environmental Protection Plan, Schwartzwalder Mine 9-48 <br />C7 <br />i <br /> Dissolved Mo <br />5 <br /> <br />4 <br /> <br />3 <br />rn <br />E 2 <br />1 <br /> <br />0 <br /> <br />o° SP o` d` oti oti o`s 0 ON Aa o`' Rbi o6 po o? o? o? po 00 <br />ed 0 <br />JO ed <br />°A ac <br />ao ?O <br />ed <br />ed <br />, <br />JA <br />°o, ?°? <br />ao ?° <br />a° SO <br />F Q <br />P F <br />P l <br />S <br />Q <br />F <br />0 <br />P <br />Q S <br />? <br />Dissolved U <br />80 <br />70 <br />so • <br />J 50 • • • • • • .. <br />E 40 <br />30 <br />20 •• <br />10 <br />0 <br />00 00 O? O? Off' Off' O? O?' Off` Off` Oy Oy OrO O`O 01 O? 00 00 O°j <br />Qe? PEA Few PJ? Qe? P°e' Qe? P°?' Few PJ? lac ?J\ lac ?O\ ?a? ?J lac ?J` )ate <br /> <br /> <br /> <br /> <br />• <br />Figure 9-11. Time Concentration Plots for Trace Metals (U, Mo) in Mine Water <br />(iv).3 Water Quali Data or Seepage into the Upper Mine Levels <br />Infiltration to the upper levels of the mine occurs seasonally during the spring and after periods of heavy <br />rain. During the majority of the year, however, the upper workings are dry. The chemistry of seasonal <br />inflow to the upper mine levels is known from samples collected at five stations in May, 1999. Sampling <br />stations were located on the Steve and Minnesota levels (Figure 1-1) and summarized in Table 9-8. <br />Table 9-8. Flow Rates at Underground Sampling Stations in the Upper Mine Levels <br />MAY 1999 <br />STATION' NORTHING EASTING ;ELEVATION DESCRIPTION FLOW <br />MINN 732,148 2,061,436 6,832 ;Minnesota Level, near Glorv Hole Not Measured <br />Wash 732,406 2,061,624 6 <br />608 ;Steve Level: seeps from Washington 0.05 <br /> , ;chutes <br /> <br />ILLRS <br />732,280 <br />2,061,551 <br />6,609 ... <br />Steve Level: seeps from boards in ..,........................................ <br />0.15 <br /> :Illinois raise <br />CO 732,144 2,061,443 6,600 :Steve Level: Colorado drift bulkhead 0.8 <br />1.46 _ 732,07,8 ............. .._.......2,06.1.,399........._...... ........... <br />6,601 Steve Level: and behind air re ulator 0.5 <br /> ____ <br />___________ _ ;. <br />The samples were collected by mine geologist Dick White who provided the following descriptions: <br />• WASH -The flow was captured from seeps and drips entering the mine from the Washington chutes on <br />the Steve Level. The water was captured from most (but not all) of the drips, collected on plastic <br />41090.090807 Whetstone Associates •