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1 Ms. Patrici N lson <br />Date E <br />' Discharge Parameter(s) <br />nischarae_Rate_(cfsl Date (y1 <br />' S^~~~~ T55 /9 -~ <br />3a Fem. s~.9s/ ,3. ~ 3 G <br />1 <br />' &xceedance of applicable permit effluent limitations <br />resulted from: <br />' `~ Discharge from snowmelt runoff occurring within 48 hours <br />after runoff inflows to the pond(s) have stopped <br />' [l Discharge from rainfall runoff occurring within 48 hours <br />after measurable precipitation has stopped <br />Documentation of precipitation and snowmelt occurrence <br />and snowmelt inflows to the ponds is retained at the miaesite and <br />is available for inspection by authorized agency representatives. <br />Copies of relevant temperature/precipitation data are attached for <br />reference. <br />All sedimentation ponds are designed to contain the full <br />design runoff volume resulting from a 10 year, Z4 hour storm event. <br />Stormwater storage capacity is in addition to design sediment <br />' storage and any permanent storage capacity. Rerr inspects all <br />sedimentation ponds on a quarterly basis. Inspections include <br />evaluation of accumulated sediment levels relative to design <br />sediment storage capacity to verify that design atormwater storage <br />' capacity is maintained at all times. If inspections indicate that <br />sediment accumulations are at or near the design sediment level, <br />Kerr removes accumulated sediment from the pond(s) within a <br />reasonable period (typically 30 to 60 days) following the <br />inspection. Hoth pond inspection reports and documentation of pond <br />clean-out are retained at the minesite sad are available for <br />' inspection by authorized agency representatives. Hosed on direct <br />observation of pond storage levels at the time discharge occurred, <br />the discharge resulted from: <br />I ~ Rainfall or snowmelt runoff volumes less than or equal <br />to the design 10 year, 24 hour storage volume <br />(] Rainfall or snowmelt runoff volumes greater than the <br />design 10 year, 24 hour storage volume <br />