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WEST TAYLOR POND - PLAN VIEW N <br />Scale 1" = 50' W E <br />S <br />PROFILE THROUGH EMBANKMENT CENTERLINE <br />SCALE 1" =50' <br />7530 7530 <br />7500 / 7500 <br />7470 ��� / 7470 <br />7440 _ po 7440 <br />f t t t t } f t t <br />O O O O N N <br />PROFILE THROUGH IMPOUNDMENT <br />F' <br />7500 SCALE 1" =50' 7500 <br />7470 /� _ 7470 <br />7440 - --�� - - L I _ i l -- 7440 <br />0 0 0 0 0 0 0 0 0 0 o O R $ O O S <br />O Co �0 01 N h co R ^ O M <br />t f f t t t t f t t t t + + + + + t + + t <br />O O N N N co 1`] W M 7 ? Y to O b 10 <br />RIPRAP PROTECTION AND <br />24" PARSHALL FLUME AS SPECIFIED <br />BY FIELD ENGINEER <br />EMBANKMENT DETAILS <br />Scale 1" = 20' <br />18' 0 GALV STEEL CMP, 14 GAUGE MINIMUM, <br />2-213'X 112" HELICALLY CORRUGATED, POLYMER COATED <br />AT 2.0% SLOPE <br />Construction Notes: <br />1. Premining Topogra by shown has been supplemented with one foot contour data based field survey <br />data collected by Epp & Associates during the Fall of 2006 using GPS methods. <br />2. See Map 41A for general location and associated drainage areas. <br />3. Embankment to be constructed of compacted fill using materials specifed by field engineer. Refer to <br />to Exhibit 7, Item 20, Part F for Geotechnical Information and compaction specifications. Figure 3 of <br />that document contains requirements for site preparation, fill materials, placement requirements, and <br />monitoring. <br />4. Hatched area of the spillway and oJtlet section along groin shall be nprapped with 18 inch median <br />size material. <br />AREA - CAPACITY TABLE <br />or <br />EARTHWORK QUANTITIES (APPROX. EXCLUDING KEYWAY) <br />CUT: 2,100 CU YD. <br />15.9 FILL: 5,500 CU YD <br />EMBANKMENTCREST <br />EL 7481.0 WALKWAY 42 HANDRAILS AS SPECIFIED <br />EMERGENCY SPILLWAY <br />EL 7476.0 <br />PRINCIPAL SPILLWAY WITH NCRS ANTI - VORTEX TRASH RACK <br />EL 7471.0 <br />TWO 3' DIA. PERFORATIONS PER ELEVATION AS SPECIFIED <br />1 EL. 7468.0 (LOWEST PERFORATION) <br />V NORMAL POOL <br />EL. 7468.0 <br />18' WATERMAN C -20 SLIDING GATE VALVE, EL. INVERT 7459.0 <br />BONE YEAR SEDIMENT ACCUMULATION, EL 7459.39 <br />POND BOTTOM <br />ORIG. GROUND EL. 7455.0 <br />ANTISEEP COLLARS 6 FT (MIN) EL 7456.0 <br />FOUR REQUIRED ON 20 FT CENTERS <br />8 FT WIDE (MIN) KEYWAY 6 FT (MIN) IN DEPTH WITH 1H: 1V SIDES <br />EXTENDING ACROSS ENTIRE ABUTMENT <br />ENGINEERS CERTIFICATION <br />1, THOMAS C. PETERSON, being a <br />Licensed Professional Engineer in <br />the State of Colorado, do hereby <br />certify that this map has been <br />reviewed by me and is true and <br />correct to the best of my knowledge <br />and information relying on <br />information supplied by experts <br />identified in section 2.03.3 of the <br />Co /owyo Coal Company L.P. Permit <br />p 0 L <br />o ••�'P 2 <br />•�:c7s fr`^9S�t^ <br />U •= sow O <br />32257 <br />SfONAL •��GO``, <br />P.E. No. 3,2257 <br />.311 b o-7 <br />VAIL <br />REceWE'D <br />APR 09TV <br />004YUNO , <br />0in9 and Sabi <br />I C <br />Exh. 7 -20C -4 <br />CAPACITY <br />ELEVATION <br />(Feet) <br />AREA <br />(Acres) <br />AVERAGE AREA <br />(Acres) <br />INCREMENTAL <br />CUMULATIVE <br />(Acre -Feet) <br />(Acre -Feet) <br />7455 <br />0.0202 <br />0 <br />0.0565 <br />0.28 <br />7460 <br />0.0928 <br />0.28 <br />0.1496 <br />0.75 <br />7465 <br />0.2063 <br />1.03 <br />0.3013 <br />1.51 <br />7470 <br />0.3963 <br />2.54 <br />0.4969 <br />2.48 <br />7475 <br />0.5976 <br />5.02 <br />0.6198 <br />0.62 <br />7476 <br />0.6420 <br />5.64 <br />TOTAL CAPACITY 5.64 ACRE -FEET <br />or <br />EARTHWORK QUANTITIES (APPROX. EXCLUDING KEYWAY) <br />CUT: 2,100 CU YD. <br />15.9 FILL: 5,500 CU YD <br />EMBANKMENTCREST <br />EL 7481.0 WALKWAY 42 HANDRAILS AS SPECIFIED <br />EMERGENCY SPILLWAY <br />EL 7476.0 <br />PRINCIPAL SPILLWAY WITH NCRS ANTI - VORTEX TRASH RACK <br />EL 7471.0 <br />TWO 3' DIA. PERFORATIONS PER ELEVATION AS SPECIFIED <br />1 EL. 7468.0 (LOWEST PERFORATION) <br />V NORMAL POOL <br />EL. 7468.0 <br />18' WATERMAN C -20 SLIDING GATE VALVE, EL. INVERT 7459.0 <br />BONE YEAR SEDIMENT ACCUMULATION, EL 7459.39 <br />POND BOTTOM <br />ORIG. GROUND EL. 7455.0 <br />ANTISEEP COLLARS 6 FT (MIN) EL 7456.0 <br />FOUR REQUIRED ON 20 FT CENTERS <br />8 FT WIDE (MIN) KEYWAY 6 FT (MIN) IN DEPTH WITH 1H: 1V SIDES <br />EXTENDING ACROSS ENTIRE ABUTMENT <br />ENGINEERS CERTIFICATION <br />1, THOMAS C. PETERSON, being a <br />Licensed Professional Engineer in <br />the State of Colorado, do hereby <br />certify that this map has been <br />reviewed by me and is true and <br />correct to the best of my knowledge <br />and information relying on <br />information supplied by experts <br />identified in section 2.03.3 of the <br />Co /owyo Coal Company L.P. Permit <br />p 0 L <br />o ••�'P 2 <br />•�:c7s fr`^9S�t^ <br />U •= sow O <br />32257 <br />SfONAL •��GO``, <br />P.E. No. 3,2257 <br />.311 b o-7 <br />VAIL <br />REceWE'D <br />APR 09TV <br />004YUNO , <br />0in9 and Sabi <br />I C <br />Exh. 7 -20C -4 <br />