|
A WEST HAUL ROAD CROSS SECTION A'
<br />7350 25 +00 7350
<br />7300'
<br />7250'
<br />7300
<br />-
<br />7300
<br />7250
<br />'7300
<br />7250
<br />400 200 0 200 400
<br />C EAST HAUL ROAD CROSS SECTION C
<br />7300 25 +00 7300
<br />7250! 7250
<br />7200;
<br />7200
<br />400 200 0 200 400
<br />Z�ENTRAL HAUL
<br />7350
<br />ROAD CROSS SECTION B'
<br />25 +00 7350
<br />7300
<br />-
<br />- - -
<br />'7300
<br />7250
<br />roPO
<br />7250
<br />7200]
<br />.7200
<br />7150'1
<br />;7150
<br />7700'
<br />!7100
<br />400 200
<br />0 200 400
<br />111=200'
<br />TYPICAL COLLOM HAUL ROAD TEMPLATE
<br />0 0 Q�
<br />LL C/L OFHAUL ROAD
<br />LU
<br />0
<br />0 00050L1pP, LU
<br />601 t µlOr1y9G�
<br />�,� gu"- - V(T'- Cmss Slope I% to 2 %; see Note 1 "r �
<br />o.
<br />ca 1 O 1" to 1.5"
<br />° Crushed Stone
<br />FII�
<br />7' '" Notes: 1) Roadway surface may be crowned, or may drain entirely Surface
<br />2' \F to left or right, depending on location, but cross slope will be
<br />13y,1 F�� between 1% and 2 %. Section shown is draining entirely to right.
<br />1" =20'
<br />Design and Construction Notes:
<br />This road has been designed to meet the applicable portions of Colorado DRMS Rule 4.03.1 for Haul Roads. It is specifically
<br />designed to meet the applicable regulations as well as Rio Tinto internal road design guidelines while minimizing additional
<br />disturbed area and preventing environmental damage. This design specifically covers those portions of the road which are
<br />"Out of Pit" and defined by the pit boundary shown by the legend. For those portions of the roadway within the pit area,
<br />normal haul road construction practices apply. Other design requirements are shown below:
<br />1. The field engineer shall have the discretion to move the road centerline horizontally a distance of up to 200 feet in any direction
<br />as necessary to meet field conditions as long as the slopes and widths are maintained.
<br />2. Maximum road grade is less than 10% as shown on the profile.
<br />3. Cross fall s lopes between centerline and road shoulders shall be between 1 and 2 percent as directed by the field engineer.
<br />4. Design width shall be as shown on the cross - section.
<br />5. Upon completion, the entire running surface of the road shall be surfaced with approximately 1 to 1.5 inches of rock or crushed gravel for traction. Additional
<br />crushed gravel surfacing shall be reapplied as necessary throughout the life of the roadway.
<br />6. A 6 foot high berm shall be used at all locations where the roadway is elevated.
<br />7. Roadway signage shall be added as appropriate.
<br />8. Ref lectors and Guideposts shall be installed as appropriate per Rio Tinto road standards.
<br />9, Cut slopes shall be 0.5H :1V or less when completed incompetent rock. Cut slopes in unconsolidated materials shall be laid back at 1.5H-1V
<br />or less as directed by the field engineer.
<br />10. Requirements for fill placement shall be as specifically described in Rule 4.03.1 Haul Roads (3) (e) "Road embankments ". Key elements of these requirements
<br />are summarized below.
<br />All vegetation material and topsoil shall be removed from the embankment foundation during construction. In addition, in areas where the existing ground slope
<br />is 5h:1 v (20 percent) or steeper and the first lift of the embankment will be in soil material, the existing ground below the stripped and removed
<br />vegetation /topsoil layer shall be plowed or stepped before placing the first lift of embankment fill. In areas where the existing slope is steeper that 5th: l v
<br />and the first lift of the embankment will be in bedrock, prior to placing the first lift of embankment fill a keyway shall be excavated into bedrock at least 2
<br />feet in depth and at least 10 feet in width under the proposed embankment toe and continuing along under the embankment toe for as long as these
<br />conditions exist.
<br />The material for embankments shall be reasonably free of organic material, coal, frozen materials, wet or peat material, natural soils containing organic matter,
<br />or any other acid - producing or other material considered unsuitable for use. Material containing by volume less than 25 percent of rock larger than 6 inches in greatest
<br />dimension shall be spread in successive uniform layers not exceeding 12 inches in thickness before compaction. Where the material for an embankment consists of large -size
<br />rock, broken stone, or fragmented material that makes placing it in 12 inch layers impossible, the embankment shall be constructed in uniform layers not exceeding
<br />in thickness the approximate average size of the rock used. Each layer of the embankment shall be completed, leveled, and compacted before the succeeding
<br />layer is placed. Embankment layers shall be compacted as necessary to ensure that the embankment is adequate to support the anticipated use. Material
<br />shall be placed in an embankment only when its moisture content is within acceptable levels to achieve design compaction. Embankment slopes shall not be
<br />steeper than 2H :1V, except where the embankment material is a minimum 85 percent rock. In this case, slopes shall not be steeper than 1.35H :1V.
<br />11, Drainage from haul road shall be directed to the pit(s) wherever possible.
<br />12. A ditch shall be installed at toe of all cut s lopes.
<br />13. If needed, temporary erosion control measures shall be implemented during construction to minimize sedimentation and erosion until permanent control measures
<br />can be established. The field engineer shall determine the need for control measures during construction. Such temporary and permanent control measures
<br />would include silt fences, straw bales, straw wattles, rock check dams, or other measures such as downstream sediment ponds.
<br />N.351454.89
<br />E :1327953.80
<br />N :351854.94
<br />E :1328253.73
<br />53042.78
<br />1329168.18
<br />N:352640.52
<br />E :1328871.22
<br />N :352245.50 /
<br />E :1328565.38 _
<br />jS
<br />XOO
<br />`'0X
<br />N :353385.14
<br />E :1329532.54
<br />N :353699.49 \
<br />E. 1329921.02
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<br />N :354021.90
<br />E :1330302.93
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<br />N :354352.77
<br />E :1330677.80
<br />EAST HAUL ROAD PROFILE
<br />TOPO
<br />17400
<br />ROAD i 7300
<br />5.8 % 7200
<br />7100
<br />7000
<br />5 +00 10 +00 15 +00 20 +00 25 +00 30 +00 35 +00 40 +00 45 +00 50+0051+82
<br />CENTRAL HAUL ROAD PROFILE
<br />- - - -- - - _ 7400
<br />7300
<br />8.3 %
<br />17200
<br />I 7100
<br />7000
<br />6900
<br />- -- 6800
<br />10 +00 15 +00 20 +00 25 +00 30 +00 35 +00 40 +00 45 +00 50 +00 55 +00 60 +00 61 +99
<br />WEST HAUL
<br />ROAD
<br />PROFILE
<br />-
<br />- - -
<br />7500
<br />roPO
<br />7400
<br />7300
<br />3.0 %
<br />7200
<br />-
<br />7100
<br />-_
<br />5 +00 10 +00 15 +00 20 +00 25 +00
<br />30 +00
<br />35 +00 40 +00
<br />45 +00 50 +00 53 +07
<br />1 11
<br />=400'
<br />N :354914.96
<br />E:133125715
<br />N :354699.49
<br />E: 1331037.90 �\
<br />E:1 09 /
<br />5.25
<br />2s
<br />1`04
<br />N :352548.28
<br />E:1330674.75
<br />i
<br />I
<br />N:352107.98 /
<br />E :1 30438.04
<br />20X
<br />N :351 48.70
<br />E: 133 240.6
<br />15 +0
<br />N :3 3395.89
<br />E
<br />'1`00
<br />�r
<br />f II
<br />li
<br />I
<br />I
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<br />N :35 069.6
<br />E:13 2291. 0
<br />If
<br />S�
<br />N :354 �;.83
<br />E: 33206.96
<br />J
<br />X
<br />N :3542
<br />E :1331
<br />N :353800.01
<br />E. 1331497.85
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<br />'0
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<br />a0y,0o
<br />N :352778.61
<br />E :1331596.26
<br />C N:352312.23
<br />E :1331417�OS
<br />C
<br />41
<br />/ jjE N :35'837.13
<br />:1331267.34
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<br />351355.22
<br />E 1331130.46
<br />E.
<br />N :353223.22
<br />:1331823.47
<br />06x
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<br />'N :353645.72
<br />E :1332090.86
<br />E:133,
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<br />x00
<br />1x99
<br />60,r ,00
<br />1332646.
<br />67 51 *ae
<br />50x00
<br />N :354515.78
<br />E. 1332579.72
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<br />•• / /•/ S 4V 35 16
<br />13 01 6 115 +D0
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<br />/ / / / / / / / / / / / / / / / / / / / / //I j / /
<br />SSE MAP 23�aFOR HAUL
<br />////// // //// / /////////// ////////////////////////////////////////!//////// / / / / / / / / / / / / / / / / / /r / / / / / / / / / //, / / / / / / /// /// //// ////////// //// //////// /// / /yam // / // // // // //// // // //// ///////// / // // ///i
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<br />3 / 111/ ///�,////1/ /,/// „//,/ // / /1/ ,/ / /r /r /// / / ROAD LOCATIONS WITHIN
<br />�/,r, THE COLLOM PIT SHELL
<br />///,.,//,�///, / /,Y /, /1 / / / / / /f; 872.53
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<br />LEGEND 1 11 200' 33 3410351136 3 7 3a2doNo3 9 34SFoot COLLOM HAUL ROADS
<br />35 36
<br />N 9 10 11 7 a s ro 11 12 an ENGINEER'S CERTIFICATION
<br />OUTSIDE HAUL ROAD TOPO 16 15 1, THOMAS C. PETERSON, being a Design for West Central and East Roads
<br />INSIDE HAUL ROAD TOPO 14 13 16 15 14 1 Licensed Professional Engineer in
<br />the State of Colorado, do hereby AS SHOWN
<br />21 22 24 19 20 21 2 2 24 certify that this map has been prepared
<br />SCALE:
<br />HAUL ROAD DESIGN TOPO to meet the applicable portions of Colorado • DATE: 2108109
<br />30 2s 28 6 25 DRMS Rule 4.03.1 for Haul Roads.
<br />SECTION LINES W 28 26 25 O DRWG. BY T P -RWF� !FSI
<br />Colowyo Coal Company APPROVED BY.
<br />TIE-IN BOUNDARY FOR POST MINING TOPOGRAPHYPER MAP 238
<br />33 34 35 36 31 32 33 4 35 36 11111111/ 5731 State Highway 13
<br />5 T41Y ,``lo o / / / • Meeker, Colorado 81641 DRWG NO.
<br />FUTURE PIT MINING LIMITS -PER MAP 23B 4 3 H� 1 6 5 4 3 1 �"' :`o��Ps • P�TcF2�%
<br />MAP 25D
<br />9 10 11 12 8 9 70 7 72 - U ° Po•� ° = O
<br />S = 32257 '
<br />16 15 14 18 17 16 15 1 13 i �p '•`3�Z /t1 f•�
<br />200' 0 20 400 -11 Too. ��i�FSS•''•••'•: G���Q No REVISION DATE BY CHI
<br />21 22 23 24 8
<br />20 27 22 23 24 , 1 IIIIC� PR -3 COLLOM PERMIT, addition of Collom Haul Roads 2110110 TCP TAT
<br />CONTOUR INTERVAL 25 FT. 28 27 2s 25 3 27 26 25 CCr"// and and Logo edits.
<br />Premine Topo Revised PMT Tie -In boundary, const. note 10,
<br />THOMAS C PETERSON ry,
<br />33 34 35 36 31 32 33 34 35 36 P.E. No. 32257 PR -3 contour annotations, added Cross -sec. template 3121111 TCP KRB
<br />v R 3 3 T3lJ - D� rr
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