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4 <br />_ I <br />I I <br />! it I ..._..'�,. ••— =�:._ I <br />I I <br />! I <br />I <br />I <br />I <br />I <br />I <br />1 <br />I <br />I I <br />( <br />I I Ij, <br />103.0 I I <br />f }�I I At the Yampa River Sedimentation Pond Inclination measurements <br />t.•t I <br />I I on embankment slopes are on average of the slope occurrence, <br />end, due to water Impoundment, projection of these measurements <br />III I <br />m <br />' I to the pond bottom are theoretical. Inasmuch as embankment <br />Approximate configuration of break in-slope at i I breaks -In -slope and waterlines are dl9frtly Irregular on this pond, <br />embankment edge -I - -� volume calculations are based on measurements that define <br />I trapezoidal and expressions rectangular r P g la ress P b ns of these boundaries. <br />� I = Therefore, area calculations tossed on tines geometric configurations <br />/ - 43.0' I - •• -` -�I N\ I a are diminished 5 percent to accommodate such Irregularities. <br />\ - Locations, of Input pipes from the haul road and processing plant <br />o drainage ditches are approximate. <br />9 <br />/ - -- Esfimctedl i SEDIMENT POND DESIGN SPECIFICATIONS:* <br />configuration of pond bottom <br />_ Total volume= 0.05 acre feet <br />j I I d I <br />Depth= 5 feet <br />jo <br />I E I Sldealope 3 teat horizontal: 1 foot vertical <br />i d Triangular shape 30 feet wide X 30 feet tong <br />I - _O I W Dewaterin m o I "' device 1.5 foot pipe <br />I'.:. m m a I I I 9 <br />J_ _ m 1 -- -- -- - -- I _ I B, j v <br />B -- t — o <br />111 I <br />SEDIMENT POND"AS FUNCTIONING' STATISTICS <br />�._ -_-- --- ------ ---------- -- ------ -� 1 <br />Total volume= 0.537 acre feet K <br />Depth - 6.95 feet rt <br />Sideslopea, variable 1.7 to 3.5 feet horizontal: 1 foot vertical <br />Trapezoidal shape 57 feet wide (average) X 103 feet long <br />Dewatering device 1.5 foot pipe <br />\ y/ Approximate configuration of waterline 6 June 90— / rt <br />5' I a; Refer to report U <br />1 /'/� /V;,,l!� \ \ • ,vta�elals a�e�1o9Y <br />\ *SOURCE <br />a <br />111111 lilll Inll IIIII IIIII IIIII III <br />0056606 06 <br />Colorado Mined Land Reclamation Board <br />Meadows li Mine <br />- <br />Permint No. C -81 -029 <br />Sun CoWcompany, Inc. <br />Revised June;30, 1986 - <br />150'> <br />66* io <br />o <br />B m tp <br />B' <br />3 estimoted <br />— — 24.2'-- <br />-____y - -_ -- — _ <br />------ _- - - - - -_ — — <br />673' — _ —_1 1 5 <br />SUN COAL COMPANY <br />PROJECT <br />MEADOWS NO. 1 MINE <br />- <br />AREA <br />DESIGN, TOTAL FLOW <br />SEDIMENTATION POND <br />STATE. COUNTY SEC. TWP• <br />CALCULATIONS <br />EXCESS STORAGE CAPACITY <br />LOCATION <br />CO ROUTT 14 6N <br />Drainage area =1.29 acres <br />TITLE <br />Unadjusted peak runoff Factor D <br />' AS FUNCTIONING <br />O (10 yrs) =0.34" 1.29 X 0.34/12 -0.04 ac /ft <br />0.497 ac /1t <br />_ ,. <br />O (25 yrs) =0.56. 1.29 X 0.56/12 =0.06 ac /ft <br />0.477 sc /ft <br />YAMPA RIVER SEDIMENTATION <br />0 (100 yrs) =0.96' 1.29 X 0.96/12:0.10 ac /ft <br />0.437 ac /it <br />- <br />111111 lilll Inll IIIII IIIII IIIII III <br />0056606 06 <br />