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1 <br />' Ms. Patri is e son <br />Date i <br />t Discharge <br />1 <br />Point <br />DC I ~~ ~) <br />' ~ w ~~, <br />1 <br />Parameter(s) <br />Exceeding Limitation <br />~ z~ i- <br />'S S /~ / Z <br /> <br />T.S~ .zS.Z- <br />.-F ~~a l0 <br />T.~s ze i <br />Discharge Rate (cfs) Date s <br />~<~6~~s x.03 mG) ~i <br />Q~Ql3 c~ t o~ 9D~ ~/7 9 `~ <br />Exceedance 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 />[I 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 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 />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 />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 to 60 days) following the <br />inspection. Both pond inspection reports and documentation of pond <br />clean-out are retained ac 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 />design 10 year, 2= hour storage volume <br />