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MID-CONTINENT RESOURCES, INC . <br /> LOADOUT FACILITY- SEDIMENTATION POND <br /> ge 3 <br /> (b) Emergency Spillway <br /> Discharge = 6 CFS <br /> 12" CMP a 2% slope will be sufficient <br /> Pond Sizing <br /> Required storage area - 0 . 269 AF <br /> From typical section <br /> 51 ± <br /> Median Depth - 13 . 5 ' + <br /> Average Width _ 16 . 0 ' ± <br /> Top ',Width _ 11 . 0 ' ± <br /> Bottom Width _ p 269 x 43 559 (4x14xL) <br /> ,'. Length <br /> L = 0 , 269 x 43 . S60 <br /> 5 x 13 . 5 <br /> L = 174 ' <br /> Flocculation/Coagulant Agents <br /> Actual Pond Size Using <br /> By using a combination coagulant and floccul nt mixy testing ae <br /> maximum of sediment can be settl <br /> e o ofNalcoB8852 , a coagulant , <br /> have determined that equal parts <br /> give the best results . This com- <br /> and 8872 , a flocculant , a a factor of 4 to 6 . <br /> bination reduces sediment load <br /> ndbarea of 0 . 269 AF , this <br /> Using a factor of 4 with a p Q the following : <br /> reduces the pond size to 0 . 176 AF using <br /> Q . 109 AF <br /> Sediment 0 . 1 t (semiannual) 60 AF <br /> Sediment 10-year runoff storage 0 AF <br /> Reduced to <br /> p . 067 AF <br /> i0-hour 10-year = 0 . 176 AF <br /> Reduced total storage <br /> Final Pond Sizing <br /> Top i%,idth 16 <br /> Bottom width 1131S , ± . <br /> Length <br />