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-,~' <br />POWDERHORN COAL COPiPANY <br />North Decline <br />West Sump <br />Plan View <br />Scale 1"=20' <br />Depths relative to each other <br />Sump Surface Area (Acres) <br />0.000 0.040 0.080 0.12 <br />0 <br /> <br />RE~Th'.'--_ <br />DEC 2 81992 <br />0.160 C '` <br />MlfVEF,,,~ ` <br />-' ~ --.. <br />} <br />Freeboard 1.0' <br />1 <br />2 Storage Capacity 0.488 A.F. <br />Design Runoff Storage 0.320 A.F. <br />;~ Measured Capacity 0.488 A.F. <br />3 (10-27.92) <br />As built max. Storage Level 1.0' <br />.~ As built bottom 6.7' <br />.~ <br />0 4 <br />-*:; . <br />. a. ,; <br />5 ~ .. <br />,y: <br />6 r~'~ 1~~ ~(~~~ ~~~ <br />~ iz- i s'~ y z <br />