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Outfall 0021 Outfall001 Upper Lower <br /> Manometer (L-1 Portal) Manhole3 Manhole' <br /> Date (inches) ( m) ( m) ( m) Other <br /> 12/11/15 nm nm 1.74 2.08 <br /> Outfall002 O—utfiall'0000F Upper Lower <br /> Manometer (L-1 Portal) Manhole Manhole <br /> Date (inches) ( m) ( m) ( m) Other <br /> 1/14/16 nm nm nm 2.23 <br /> Table 4 Notes: 'Outfall 002 originates at the Research Mine portal, the manometer measures head behind a <br /> concrete dam inside the sealed adit. <br /> 2 Outfall 001 originates at the L-1 portal of Logan Wash Mine and during the reporting period discharged into the <br /> Evaporation Pond.All measurements recorded by electronic flowmeter display. <br /> 3 Upper Manhole is located on Retort Water Pipeline in Logan Wash approximately 3000 ft down drainage of the <br /> Lower Dump. <br /> 4 Lower Manhole is located on Retort Water Pipeline immediately north of Evaporation Pond. <br /> nm=not measured <br /> 4 <br />