|
1 g 00 ` .
<br /> 5,
<br /> 1 Emergency Spillway Profile
<br /> 1 Transport Section
<br /> t Emergency Spillway Cross Section
<br /> 1 Control Section --- Control Section -_- - Transport Section -
<br /> 1
<br /> - H = 0.58 ' - H = 0.58' - H = 0.27'
<br /> Control Section El. 5678.0
<br /> Q�0024
<br /> 3 3 S = 0.04 ft/ft
<br /> 1 7 00 - ----- 20 .. -- ---- 20 - - �'`El. 5678,0
<br /> �,� Emergency Spillway Hydraulics
<br /> ND Emergency Spillway Hydraulics Transport Section
<br /> Control Section
<br /> ~ , Q = CLH 312 Q = 1.49 AR213S I12
<br /> 22.8 cfs Q,00-z4 - n
<br /> � Q,Qp�4= - 22.8 cfs A = 5.62 sq. ft.
<br /> q C = 2,63 Scale 1" = 10' n = 0.030 WP = 21.71 ft
<br /> i r L = 20 ft S = 0.04 ft/ft R = 0.2588 ft
<br /> H = 0.58 ft Z = 3H 1 V V = 4.03 fps
<br /> b = 20 ft Yn = 0.27 ft
<br /> ,zl 6 0 Required control section freeboard is 0.3 feet. Note:Embankment and emergency spillway slopes will
<br /> 0 Available freeboard is in excess of 2 feet. be protected from erosion by planting with grass mixture.
<br /> •
<br /> 5690 5690
<br /> Existing Topo
<br /> 5685 5685
<br /> °. -
<br /> s Bedrock
<br /> Dam/Pond
<br /> 5680 568D
<br /> / 5675
<br /> / ' 5675
<br /> t
<br /> Hor. Scale 1"=50'
<br /> 5670 5670 Vert. Scale 1"= 10'
<br /> 5665
<br /> 4 00 <y 5665
<br /> / + + + +
<br /> � 5690
<br /> 5690
<br /> LO
<br /> r. 5685 _ 5685
<br /> I � 5680 -- - 5680
<br /> 3 00
<br /> 5675 'i- - ----- - -- -- - - - --- - - - _ 5675
<br /> doop
<br /> 1 SSU
<br /> j5670 -I - ---- ��� -- _ 5670
<br /> 4 4 5665 5665
<br /> O
<br /> o O
<br /> ,.a
<br /> �i7 + + + +
<br /> 2 00
<br /> 5685 5685
<br /> Profile town Embankment Centerline
<br /> 5680
<br /> ,
<br /> 5675 - 5675
<br /> 5670 5670
<br /> 00 .. 1+00 2+00 3+00 4+00 5+00
<br /> C1
<br /> I
<br /> S
<br /> oo �
<br /> o
<br /> A
<br /> Op
<br /> Excavate Channel here ---� ` 5676 -� 0\ Typical Ditch C4A Cross-Section Typical Ditch Pond 018 East Cross-Section
<br /> See Note 6
<br /> SA! -5674 0, � - H = 0.40' -- H = 0.24
<br /> -► -�
<br /> 7 --�•- 8 minimum 8 minimum
<br /> 1 6g o y Channel Hydraulics
<br /> 5� Channel Hydraulics
<br /> Q,o-24= 7,21 cfs Q,,-24= 3.16 cfs
<br /> N s = 0.029 ft/ft s = 0.05 ft/ft
<br /> min. width = 8 ft
<br /> H = 0.40 ft Scale 1" = 10' min. width = 8 ft
<br /> H = 0.24 ft
<br /> v = 1.93 ft/sec. v = 1.49 ft/sec.
<br /> CMP Culvert Installed(C176) See text for construction details for both ditches.
<br /> See Note 7
<br /> s Minimum freeboard for all ditch sections is 0.3 feet. To achieve this, at a minimum, all portions of Ditch C4A and Ditch Pond 018 East shall
<br /> ��2 3
<br /> be constructed to be capable of conducting flows of at least 1.0 foot of depth.
<br /> S6dp ti���
<br /> C �.
<br /> � Q
<br /> � _. - . -ter. ;• ��
<br /> �. �
<br /> Cross Section of Culvert Installation
<br /> --. : -,. 5690 5690 Existing Topo
<br /> '-
<br /> �cQ 5685 � __- _ __- - - __.__ 5685 Completed Pond
<br /> O E.5 Degree, on" �Exfstinj Road Corrugated Metal Pipe, 18°
<br /> 5680 --- - -- _ -- 5680
<br /> _ sop - 5675
<br /> 5675 -- - -
<br /> - invert�lev.
<br /> �...
<br /> Elev. 5s7a.o Hor. Scale 1"=20'
<br /> _._. 5670 ---- - -- 5670
<br /> 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00
<br /> Vert. Scale 1"=20'
<br /> 24 CMP Culvert Installed(C 175)
<br /> See Note 5
<br /> C1
<br /> macro b
<br /> '• pivision° &Sa�etY
<br /> Mining
<br /> _. Legend
<br /> N Permit Boundary
<br /> Profile
<br /> 50' 0' 50' 100'
<br /> Completed Pond Contour
<br /> 1 Plan View
<br /> Pond 0 8
<br /> Construction Notes: 1" = 50' _ Ditch Existing
<br /> Topo: Current Topo outside of construction limits, ��� �' � �- � � a Ditch Proposed
<br /> 1. Site Preparation: with planned final topograph within pond area W E
<br /> L
<br /> This site has a verylimited amount of fill placement, as the impoundment is largely subgrade. Streams
<br /> Prior to placing fill, the area will be be stripped of organic topsoil or other deleterious materials. Construction Boundary
<br /> 2. Acceptable Fill Materials: Road
<br /> Suitable fill materials can be obtained from pond excavations or from nearby borrow sources. Suitable materials include native clay soils, clayey sand soils, and bedrock materials which are broken down to these soil types (SC, GC, CL and CH). Bedrock materials will be
<br /> duce a soil like material with maximum article size of 6 inches. The field engineer may approve the use of other materials.
<br /> Area- CapacityTable
<br /> processed to pro p g
<br /> Elevation Area Area Ave Area Incre. Cum TR-73
<br /> (feet) (ft sq) (acres) (acres) (ac-ft) (ac-ft) Approved 8/24/2016
<br /> 3. Unacceptable Fill Materials:
<br /> Materials not considered suitable for use as embankment fill include cleaner sand and gravel. Also unacceptable are highly carbonaceous materials obtained from bedrock excavations or well-cemented sandstones which do not break down to soil like material, Highly organic soils or 5669.0 1963 0.05 0.00
<br /> containing construction debris are also not acceptable. Frozen soil is not acceptable. 0. 11 0. 11 Plan View location: SE 1/4 Section 6 T461V R15W
<br /> materials g p ENGINEERS CERTIFICATION
<br /> 4. Fill Placement and Compaction.'
<br /> I, Thomas C. Peterson, hereby certify that this 5670.0 7248 0. 17 0. 11 Page Attachment 2,05.3(3)-28, gage 7
<br /> p ( ) p p p p p dry density ( ) map has been reviewed by me and is true 0.20
<br /> Embankment fill will be laced in thin horizontal lifts 8 to 12 inches loose thickness). The fill will be moisture conditioned to within 2 percent of optimum moisture content and compacted to at least 95 percent of standard proctor maximum d densi (AS D 698 . The 0.20
<br /> placing and spreading of fill materials will be started at the lowest point of the embankment. Fill placement and compaction will be observed and tested by qualified engineering firm. and correct to the best of my knowledge and p g p ginformation, relying on information supplied 5671.0 10197 0.23 0.31 Pond 0 18 PI an View and
<br /> " n runoff southward into Calamity Draw. by experts employed by New Horizons Mine and 0.27 0.27 Design Deiai/S
<br /> 5. A 24 inch culvert (C175) has been installed under the road at this location to route upstream drainage and irrigation u ty that 1 am a Professional Engineer licensed in Colorado as
<br /> required by the provisions of C.R.S. 12-25-101 5672.0 13398 0.31 0,58
<br /> 6. Following construction of Pond 018, upstream drainage from the C4 ditch will be routed southward into Calamity Draw by cutting a 12 foot wide trapezoidal channel in this are as directed by the field engineer. through C.R.S. 12-25-119. IN WITNESS WHEREOF 0,34 0,34 OPIGI As Noted
<br /> 1 have hereunder set my hand and affixed my seal. oRiGINAL DATE: Sig ��,o�.s
<br /> e field engineer, an 18 inch minimum diameter culvert (Cl6 will be installed under the road at this location and will extend down the interior pond slope. 5673.0 15978 0.37 0.91 DWG.BY., : Fran
<br /> ••• 2 APPROVED BY: Frank
<br /> ( ) 0.4D 0.40 FILENAME
<br /> 7. As directed by the g z w
<br /> from that shown in the capacity table. •4 1.31 �tiC
<br /> 8. Pond capacity is an estimate based on bedrock conditions. These conditions may result in final capacity of the pond to vary by 0.5 acre-feet ro o p ty 5674.0 18544 0 3 R,z
<br /> `,`'0011111llr►11, DWG N0. Map 2
<br /> ``, p`Q O L /C z 0.46 0.46 New Horizon Mine
<br /> Permit No:C 1989 008
<br /> P. Box 628,Nucla,CO.81424
<br /> •�� Q�.••'"P 'W.0 5675,0 21361 0.49 1.77
<br /> © a �to O 0.52 0.52 No, REVISION DATE BY CHK
<br /> 32257 �: c 5676.0 24085 0.55 2.29 TR_
<br /> ��'. 5-IZ -It&.•4 New design for Pond 018 9128115 TCP FKF
<br /> 0.59 0.59 69
<br /> ���� S/pNq �INS% 5677.0 27487 0.63 2.88 TR- Added Freeboard and spillway notes. 11/25/15 TCP FKF
<br /> THOMAS C PETERSON 69
<br /> 0.67 0.67 TR- Revised embankment,pond capacity, and 04/21/16 TCP FKF
<br /> P.E. No. 3 257 5678.0 30628 0.70 3.55 72 profiles, and spillway details.
<br /> 51Z 4W G TR-
<br /> DATE 73 Update Permit Boundary 05/19/16 TCP FKF
<br /> Pond 018 Map 2 TR72.dwg
<br />
|