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' rs. tatr c' 1sor. <br /> Dat= <br />1 Discharge Parameter(s) <br /> °x ee i^ <br />r-,. <br />y itatio Discharge Rate (cfs) ate <br />' 3c .'7'SS ~~Z D.DI~ -5~i~ <br /> DO~f 3cy~ Ts5 ~o~ D-o`~.~ i3 <br />' OLD .3c~ T~~ / ~~ D. oo~ id 3 <br /> <br />' Sxceedance of applicab le peimit effluent limitations <br /> =esulted from: <br />' ~ Discharge from snowmelt runoff occurring within 48 hours <br /> after n:ncff i nflows to the pond(s) have stopped <br />Discharge from rainfall runoff occurring wit!:in 48 hours <br />after measurable precipitation has stopped <br />' Documentation of precipitation and snowmelt occurrence <br />a^d snok:.,elt inflows to the ponds is retained at the minesite and <br />is available for inspection by authorized agency representatives. <br />Copies of relevant temperature/precipitation data are attached for <br />-e.erence. <br />All sedimentation ponds are designed to contain the full <br />design =lnoff volume resulting from a 10 year, 24 hour storm event. <br />Stormwater storage capacity is in addition to design sediment <br />storage and any permanent storage capacity. Rerr inspects aII <br />s=_dimentation ponds on a quarterly basis. Inspections include <br />evaluat_cn of accumulated sediment levels relative to design <br />sedime^.t storage capacity to verify that design stormwater storage <br />capacity is maintained at all times. If inspections indicate that <br />sediment accumulat'_ons are at or near the design sediment level, <br />iterr removes acc•.tmulated sediment from the pond(s) within a <br />easonable peric3 (typically 30 to 60 days) following the <br />inspection. Both pond inspection reports and documentation of pond <br />c_ean-out are retained at the minesite and are available for <br />inspection by authorized agency representatives. Based on direct <br />cbservation of pond storage levels at the time discharge occurred, <br />t^e discharge resulted from: <br />Rainfall or snowmelt runoff volumes less than or equal <br />to the design 10 year, 24 hour storage volume . <br />[j Rainfa:'_ or snowmelt runoff volumes greater than the <br />design .0 year, 24 hour storage volume <br />