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® Climax Molybdenum <br />A Freeport- McMoRan Company <br />Table 1 <br />Annual Water Monitoring Data <br />Henderson Mine <br />Location <br />Sample <br />Date <br />Sample <br />Time <br />Analytical <br />Laboratory <br />Iron, Dissolved' <br />(pg/L as Fe) <br />Manganese, Dissolved2 <br />(Ng/L as Mn) <br />Selenium, Dissolved2 <br />(pg /L as Se) <br />Zinc, Dissolved2 <br />(pg /L as Zn) <br />Specific Conductivity' <br />(µS /cm) <br />pH <br />(Standard Units <br />Sulfate° <br />(mglL) <br />MNGW -1 <br />7/16/2012 <br />1030 <br />Ana Ica <br /><2.7 <br />so <br /><0.30 <br />428 <br />1706 <br />6.8 <br />602 <br />MNGW -1 <br />12/11/2012 <br />1550 <br />Accutest <br />603 <br />58 <br /><0 58 <br />21 1 <br />4334 <br />6.4 <br />142 <br />Numeric Protection Limit (NPL) <br />5,000 <br />790 <br />20 <br />2,000 <br />N/A re <br />6.5-8.5 <br />WA (report <br />Location <br />Sample <br />Date <br />Sample <br />Time <br />Analytical <br />Laboratory <br />Iron, Dissolved' <br />(Ng/L as Fe) <br />Manganese, Dissolved2 <br />(pg/L as Mn) <br />Selenium, Dissolved2 <br />(pg /L as Se) <br />Zinc, Dissolved2 <br />(pg /L as Zn) <br />Specific Conductivity' <br />(µS /cm) <br />pH <br />(Standard Units <br />Sulfate' <br />(m9/L) <br />BG -20 <br />7/1612012 <br />0945 <br />Analytica <br /><2 7 <br />62 <br /><0.30 <br />9.67 <br />39.4 <br />10.5 <br />10 <br />BG -20 <br />12/11/2012 <br />1145 <br />Accutest <br />107 <br /><0 3 <br /><0.58 <br />143 <br />81 <br />7.4 <br />14.9 <br />CC -10 <br />7/16/2012 <br />0915 <br />Ana Ica <br /><2 7 <br />42 <br /><0.30 <br />109 <br />25.5 <br />77 <br />3.5 <br />CC -10 <br />12/112012 <br />10 30 <br />Accutest <br />105 <br />3.7 <br /><0 58 <br />29.9 <br />151.6 <br />6 7 <br />8.0 <br />CC�O <br />7/162012 <br />11 OF <br />Ana ica <br /><2 7 <br />164 <br /><0 30 <br />57 5 <br />55.6 <br />6 9 <br />12.4 <br />CC-30 <br />121112012 <br />1230 <br />Accutest <br />788 <br />1,610 <br /><0 58 <br />132 <br />440.1 <br />7 2 <br />310 <br />Notes <br />RED - Resulting concentration falls outside of the Numeric Protection Limit (NPL). <br />'Analyzed by EPA Method 200.7 or 200.8 <br />Analyzed by EPA Method 200 8 <br />"Analyzed using field instrumentation <br />"Analyzed by EPA Method 300.0. <br /><= not detected at concentrations exceeding the laboratory reporting limit <br />mgt = milligrams per liter <br />pg/L = micrograms per liter <br />WS/cm = micro Siemens per liter <br />EPA = Environmental Protection Agency <br />