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Logan Wash Mine Annual Report <br />Permit No.: M-1977-424 <br />Table 4. Logan Wash Mine Site Monitoring Results <br /> Outfall002 Outfall001 Upper Lower <br /> Manometer (L-1 Portal) Manhole Manhole Comments <br />Date Level inches m m m <br /> Mine Site inaccessible due <br />3/09 to nm nm nm nm to snow on upper access <br />5/09 road <br />5/8/09 12.2 3.53 2.16 2.11 <br />6/3/09 -12.5 nm 1.04 2.31 After sampling in vault <br />6/19/09 12.5 3.47 2.17 2.07 <br />6/26/09 12.5 3.80 nm nm <br />7/7/09 12.5 3.59 1.88 2.7 <br /> DIA Construction flushing <br />10/8/09 10.5 3.27 1.61 >50 retort pipeline to install <br /> tracer wire <br /> Flow of Outfall 001 <br />11/5/09 11.0 nm 1.35 2.5 measured in Lower Bench <br /> vault <br />12/2/09 10.75 3.38 1.34 2.12 <br />1/8/10 2.36 <br />1/27/10 nm nm nm nm Pond leak detection sump <br /> has 4.4 ft of water <br /> <br />2/11/10 nm nm nm 2.48 0.91 gpm combined flow <br />from 3 detection pipes and <br /> declining <br /> Lower Bench snow depth is <br /> 1.45 ft. Flow of 0.13 gpm <br />2/18/10 0 2.93 1.35 2.29 from pond east detection <br /> pipe only <br />2/24/10 nm nm nm 1.93 No flow in pond detection <br /> vault pipes <br />3/2/10 nm nm nm 2.14 No flow in pond detection <br /> vault pipes <br />3/10/10 nm nm nm 2.10 No flow in pond detection <br /> vault pipes <br />3/18/10 nm nm mn 2.06 <br />Notes: nm = not measured. <br />Western Water & Land, Inc. 10