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1~ rts. Patric a/Nelson <br />Date <br />" Discharge Parameter(s) <br />Point Y d~na Limi a ~ n pischarge Rate (cfs) <br />I) C~0! 301 TSS 7~ /./~ C1•131~ ~/8 ~ <br />-rss ~ <br />~~ S 3aS} T~ S lllo O. ~-c> if <br />,I &xceedance of applicable permit effluent limitations <br />resulted from: <br />I' ~ Discharge from snowmelt runoff occurring within 48 hours <br />after runoff inflows to the pond(s) have stopped <br />~' (] Discharge from rainfall runoff occurring within 48 hours <br />after measurable precipitation has stopped <br />I' Documentation of precipitation and snowmelt occurrence <br />and snowmelt 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 />reference. <br />All sedimentation ponds are designed to contain the full <br />I' design runoff 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. Kerr inspects all <br />11 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 stormwater 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 Co 60 days) following the <br />' inspection. Both pond inspection reports and documentation of pond <br />clean-out are retained at the minesite and are available for <br />inspection by authorized agency representatives. Based on direct <br />observation of pond storage levels at the time discharge occurred, <br />the discharge resulted from: <br />' ~ 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 />I design 10 year, 24 hour storage volume <br />