Laserfiche WebLink
SEC ■ I U N 21 HUM) PLA N V I L I I N <br />Scale 1" = 50' W E <br />S <br />PROFILE THROUGH EMBANKMENT CENTERLINE <br />C' <br />7020 SCALE 1" =50' 7020 <br />6990 6M <br />O OOi N 00 a O <br />) <br />O O O O ^ ^ ^ N N N l0 <br />DD' <br />PROFILE THROUGH IMPOUNDMENT <br />7020 SCALE 1" =50' 7020 <br />I � <br />6990 J 6990 <br />6960 p o _ op p 980 <br />6 <br />8 W Q R $ OW OV O M N h co 7 <br />O O O O w w w N N co (`] 7 V' Nt V) b <br />RIPRAP PROTECTION AND <br />17 PARSHALL FLUME AS SPECIFIED <br />� BY FIELD ENGINEER <br />EMBANKMENT DETAILS <br />Scale 1" = 20' <br />50 <br />18'0 GALV STEEL CMP, 14 GAUGE MINIMUM, <br />2 -21X X 112' HEOCALLY CORRUGATED, POLYMER COATED <br />AT 2.0% SLOPE <br />Construction Notes: <br />1. Premining Topography 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 outlet section along groin shall be riprapped with 18 inch median <br />size material. <br />AREA - CAPACITY TABLE <br />+I EARTHWORK QUANTITIES (APPROX. EXCLUDING KEYWAY) <br />CUT.: 14,900 CU YD. <br />15,U FILL: 12,200 CU YD <br />EMBANKMENTCREST <br />EL 6993.0 <br />EMERGENCY SPILLWAY WALKWAY W 42'HANDRAILS AS SPECIFIED <br />EL 6988.0 <br />r <br />EL. PRINCIPAL SPILLWAY WITH NCRS ANTI- VORTEX TRASH RACK <br />6982.0 <br />1 TWO 3° DIA PERFORATIONS PER ELEVATION AS SPECIFIED <br />2 EL 6978.0 (LOWEST PERFORATION) <br />v NORMAL POOL <br />8978.0 <br />ur WATERMAN C-20 SLIDING GATE VALVE, EL INVERT 6971.0 <br />ONE YEAR SEDIMENTACCUMULATION, EL 6968.51 <br />ORIG. GROUND POND BOTTOM <br />ANTISEEP COLLARS 6 FT //MIN EL 6969.0 EL. 6965.0 <br />FOUR REQUIRED ON 20 F7 C�NT ERS <br />8 FT WIDE (MIN) KEYWAY 6 FT (MIN) IN DEPTH WITH 1 H. 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 />Colowyo Coal Company L.P. Permit. <br />o�POO *Vv <br />Q?' <br />I <br />SS Fy <br />_' Q): dSC•Pflf •• <br />32257 z • <br />�p •�• 3/13 Or <br />�rtg <br />THOMAS C PETERSON <br />No. 2257 <br />3 P.E. f/ y n'7 <br />DATE <br />RECEIVED <br />APR C 3 'NU I <br />Division of Reclamation. <br />Mining and SatetY <br />SECTION 21 POND DESIGN <br />RIOSCALE. <br />As Ned <br />TINTO <br />CAPACITY <br />EVATION <br />Feet) <br />AREA <br />(Acres) <br />AVERAGE AREA <br />(Acres) <br />INCREMENTAL <br />CUMULATIVE <br />Exh. 7, Item 20 <br />13 <br />5731S 13 <br />Meeker. CobrnJO 81611 <br />Figure 1 B -3 <br />(Acre -Feet) <br />(Acre -Feet) <br />r'6965 <br />0.2227 <br />DATE <br />0 <br />3HK <br />PR -2 <br />0.2918 <br />1.46 <br />1117107 <br />6970 <br />0.3609 <br />PR -2 <br />EDIT TO NOTE AND SED. YIELD PER REVIEW COMMENT <br />1.46 <br />TCP <br />TAT <br />0.4476 <br />2.24 <br />6975 <br />0.5343 <br />3.70 <br />0.6330 <br />3.16 <br />6980 <br />0.7316 <br />6.86 <br />0.8393 <br />4.20 <br />6985 <br />0.9470 <br />11.06 <br />1.0157 <br />3.05 <br />6988 <br />1.0845 <br />14.11 <br />TOTAL CAPACITY 14.11 ACRE -FEET <br />+I EARTHWORK QUANTITIES (APPROX. EXCLUDING KEYWAY) <br />CUT.: 14,900 CU YD. <br />15,U FILL: 12,200 CU YD <br />EMBANKMENTCREST <br />EL 6993.0 <br />EMERGENCY SPILLWAY WALKWAY W 42'HANDRAILS AS SPECIFIED <br />EL 6988.0 <br />r <br />EL. PRINCIPAL SPILLWAY WITH NCRS ANTI- VORTEX TRASH RACK <br />6982.0 <br />1 TWO 3° DIA PERFORATIONS PER ELEVATION AS SPECIFIED <br />2 EL 6978.0 (LOWEST PERFORATION) <br />v NORMAL POOL <br />8978.0 <br />ur WATERMAN C-20 SLIDING GATE VALVE, EL INVERT 6971.0 <br />ONE YEAR SEDIMENTACCUMULATION, EL 6968.51 <br />ORIG. GROUND POND BOTTOM <br />ANTISEEP COLLARS 6 FT //MIN EL 6969.0 EL. 6965.0 <br />FOUR REQUIRED ON 20 F7 C�NT ERS <br />8 FT WIDE (MIN) KEYWAY 6 FT (MIN) IN DEPTH WITH 1 H. 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 />Colowyo Coal Company L.P. Permit. <br />o�POO *Vv <br />Q?' <br />I <br />SS Fy <br />_' Q): dSC•Pflf •• <br />32257 z • <br />�p •�• 3/13 Or <br />�rtg <br />THOMAS C PETERSON <br />No. 2257 <br />3 P.E. f/ y n'7 <br />DATE <br />RECEIVED <br />APR C 3 'NU I <br />Division of Reclamation. <br />Mining and SatetY <br />SECTION 21 POND DESIGN <br />RIOSCALE. <br />As Ned <br />TINTO <br />DATE 1712007 <br />ORWG. BY TCP <br />APPROVED BY <br />ENERGY <br />DRWG NO. <br />AMERICA <br />Exh. 7, Item 20 <br />13 <br />5731S 13 <br />Meeker. CobrnJO 81611 <br />Figure 1 B -3 <br />No. <br />REVISION <br />DATE <br />BY <br />3HK <br />PR -2 <br />ADDED AS NEW FIGURE <br />1117107 <br />TCP <br />TAT <br />PR -2 <br />EDIT TO NOTE AND SED. YIELD PER REVIEW COMMENT <br />3112107 <br />TCP <br />TAT <br />I k< <br />Page Exh. 7 -20B -4 <br />