Laserfiche WebLink
SECTION 28 POND - PLAN VIt w N <br />Scale 1" = 50' W E <br />S <br />7140 <br />7110 <br />1:1 <br />7050 <br />7020 <br />A' PROFILE THROUGH EMBANKMENT CENTERLINE <br />SCALE 1" =50' <br />7110 <br />ZIZZ1] <br />A' <br />7110 <br />O co to N N tn 00 O^ a r, <br />t t t t t t t t t t <br />O O O O ^ ^ ^ N N N <br />PROFILE THROUGH IMPOUNDMENT <br />SCALE 111 =50 <br />T:.98 <br />B' <br />7140 <br />O <br />t <br />O <br />O O N 7 ^ S CO (0 00! N co O^ ? <br />1"J 10 <br />t + + + + + + + + t + + t t t t t 10 <br />O N N Al 00 M W M v 7 It u7 h O <br />RIPRAP PROTECTION AND <br />17' PARSHALL FLUME AS SPECIFIED <br />� BY FIELD ENGINEER <br />EMBANKMENT DETAILS <br />Scale 1" = 20' <br />Ile <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 specified 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, till 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 />15.0 <br />EMBANKMENT CREST <br />EL 7082.0 <br />EMERGENCY SPILLWAY <br />EL 7077.0 <br />7110 <br />1:f <br />71 eMS] <br />EARTHWORK QUANTITIES (APPROX. EXCLUDING KEYWAY) <br />CUT: 4,500 CU YD. <br />FILL: 16, 700 CU YD <br />WALKWAY W 47 HANDRAILS AS SPECIFIED <br />7 EL 170710 SPILLWAY WITH NCRS ANTI - VORTEX TRASH RACK <br />1 TWO 3° DIA PERFORATIONS PER ELEVATION AS SPECIFIED <br />2 EL 7066.0 (LOWEST PERFORATION) <br />0 NORMAL POOL EL 7066.0 <br />18' WATERMAN G20 SLIDING GATE VALVE, EL INVERT 7059.5 <br />ONE YEAR SEDIMENT ACCUMULATION, EL. 7057.25 <br />OR /G. GROUND EC 71155 aTTOM <br />EL 7058.0 <br />ANTISEEP COLLARS 6 FT MIN) <br />FOUR REQUIRED ON 20 CENTERS <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 />00111H11111., /Z <br />0 L /C F G4i <br />32257 <br />�o o-7 <br />THOMAS C PETERSON <br />P.E. No. 32257 <br />RECEIVED <br />APR 0 3 [uul <br />Division of Reclamation, <br />Mining and Safety <br />SECTION 28 POND DESIGN <br />RIOSCALE- <br />As Noted <br />TINTO <br />CAPACITY <br />ELEVATION <br />AREA <br />AVERAGE AREA <br />INCREMENTAL <br />CUMULATIVE <br />(Feet) <br />(Acres) <br />(Acres) <br />(Acre -Feet) <br />(Acre -Feet) <br />7055 <br />0.1091 <br />DATE <br />0 <br />IHK <br />PR -2 <br />0.1591 <br />0.80 <br />1 17 07 <br />7060 <br />0.2092 <br />PR -2 <br />EDIT TO NOTE AND SED. YIELD PER REVIEW COMMENT <br />0.80 <br />TCP <br />TAT <br />0.2697 <br />1.35 <br />7065 <br />0.3303 <br />2.14 <br />0.4032 <br />2.02 <br />7070 <br />0.4760 <br />4.16 <br />0.5628 <br />2.81 <br />7075 <br />0.6495 <br />6.97 <br />0.6940 <br />1.39 <br />7077 <br />0.7385 <br />8.36 <br />TOTAL CAPACITY 8.36 ACRE -FEET <br />15.0 <br />EMBANKMENT CREST <br />EL 7082.0 <br />EMERGENCY SPILLWAY <br />EL 7077.0 <br />7110 <br />1:f <br />71 eMS] <br />EARTHWORK QUANTITIES (APPROX. EXCLUDING KEYWAY) <br />CUT: 4,500 CU YD. <br />FILL: 16, 700 CU YD <br />WALKWAY W 47 HANDRAILS AS SPECIFIED <br />7 EL 170710 SPILLWAY WITH NCRS ANTI - VORTEX TRASH RACK <br />1 TWO 3° DIA PERFORATIONS PER ELEVATION AS SPECIFIED <br />2 EL 7066.0 (LOWEST PERFORATION) <br />0 NORMAL POOL EL 7066.0 <br />18' WATERMAN G20 SLIDING GATE VALVE, EL INVERT 7059.5 <br />ONE YEAR SEDIMENT ACCUMULATION, EL. 7057.25 <br />OR /G. GROUND EC 71155 aTTOM <br />EL 7058.0 <br />ANTISEEP COLLARS 6 FT MIN) <br />FOUR REQUIRED ON 20 CENTERS <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 />00111H11111., /Z <br />0 L /C F G4i <br />32257 <br />�o o-7 <br />THOMAS C PETERSON <br />P.E. No. 32257 <br />RECEIVED <br />APR 0 3 [uul <br />Division of Reclamation, <br />Mining and Safety <br />SECTION 28 POND DESIGN <br />RIOSCALE- <br />As Noted <br />TINTO <br />DATE ' „7 @007 <br />DRWG. BY Tf;P <br />APPROVED BY <br />ENERGY <br />DRWG NO. <br />AMERICA <br />Exh. 7, Item 20 <br />`O5731 SWW Hgtw 13 81 <br />Meeker, Cd"rsb 61 1 <br />Figure 1A -3 <br />No. <br />REVISION <br />DATE <br />BY <br />IHK <br />PR -2 <br />ADDED AS NEW FIGURE <br />1 17 07 <br />TCP <br />TAT <br />PR -2 <br />EDIT TO NOTE AND SED. YIELD PER REVIEW COMMENT <br />3112107 <br />TCP <br />TAT <br />1�(zZ 5 ) 10 <br />Page Exh. 7 -20A -4 <br />