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1
<br /> 4100
<br /> Emergency Spillway Profile
<br /> Transport Section
<br /> Emergency Spillway Cross Section -- ��------ _
<br /> Control Section Control Section -- Transport Section --
<br /> 1 �_.-- -- H = 0.58 I --- H = 0.58' -- H = 0.27
<br /> -2 Control Section El. 5678.D Q10024
<br /> .. _. .._
<br /> 3
<br /> 7TS
<br /> - 0.04
<br /> 1 7 00
<br /> ---- 20 --- - -� - -- 20 1 - _..El. 5678.0
<br /> Emergency Spillway Hydraulics
<br /> N Emergency Spillway Hydraulics Transport Section
<br /> O Control Section
<br /> 1
<br /> l Q
<br /> = CLH 312 Q = 1.49 AR213S 112
<br /> = 22.8 cfs A = 5.62 sq. ft.
<br /> Q,0024= 22.8 cfs Q,00-zd
<br /> C = 2.63 Scale 1" = 10' n = 0.030 WP = 21.71 ft
<br /> 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 /> 1
<br /> b = 20 ft Yn = 0,27 ft
<br /> 6 Required control section freeboard is 0.3 feet. Note:Embankment and emergency spillway slopes will
<br /> oo Available freeboard is in excess of 2 feet. be protected from erosion by planting with grass mixture.
<br /> 5690 5690
<br /> i A
<br /> A
<br /> I5685 5685 Existing Topo
<br /> Bedrock
<br /> s Dam I Pond
<br /> ._ 7. 5680 5680
<br /> 5675 5675 -
<br /> Hor. Scale 1"-50'
<br /> Vert5670 5670
<br /> Scale 1"_ 10'
<br /> 5665 5665
<br /> z
<br /> 4 00 ' 0 0 0 0
<br /> y o o +
<br /> + + N c�
<br /> 5690
<br /> 5690
<br /> 1
<br /> LO LJ
<br /> :: r-• 5685 LO
<br /> 5 5
<br /> X �
<br /> 5680
<br /> 5680
<br /> 3 00
<br /> rx.
<br /> 5675 5675
<br /> �. - ed-
<br /> SSU dow
<br /> 1 I�4
<br /> 1d 00
<br /> CS Mowdoo 5670
<br /> woo
<br /> _____.__----.. .
<br /> 1 5665
<br /> 1 5 665 -- - L _----- ---_ _ ---- -- --
<br /> tS, o 0 0 0
<br /> + + +
<br /> 1 /70 + + d
<br /> 2 00 s,
<br /> - __ _.
<br /> c,S 5685 5685
<br /> -
<br /> 1 ! Profile own Embankment Centerline
<br /> _. - _ C 5680
<br /> 5680
<br /> so
<br /> 5675
<br /> 1 5675
<br /> 5670 - 5670
<br /> �.J I
<br /> 1
<br /> 00 0+00 1+00 2+00 3+00 4+00 5+00
<br /> (J C
<br /> S
<br /> , 6
<br /> 93"
<br /> 0
<br /> oo �,
<br /> © A `QO
<br /> � Xo
<br /> o
<br /> B °
<br /> Excavate Channel here --
<br /> ©Q /�_ 567s Typical Ditch C4A Cross-Section Typical Ditch Pond 018 East Cross-Section
<br /> See Note 6 _ d� H = 0,24 '
<br /> Spr I --5674 --- -- - �I = D.4D 1
<br /> s6�8 ay 5672 --j 8'minimum 8'minimum -
<br /> oChannel Hydraulics Channel Hydraulics
<br /> 669 = -
<br /> 5 Q,o-24 7.21 cfs
<br /> N s = 0.029 ft/ft Q,a�4- 3.16 cfs
<br /> s = 0.05 ft/ft
<br /> a 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) �`'`�
<br /> See text for construction details for both ditches.
<br /> See Note 7
<br /> O° 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 /> ss�� be constructed to be capable of conducting flows of at leas10,
<br /> t 1.D foot of depth.
<br /> o C (�✓
<br /> 00 �
<br /> Cross Section of Culvert Installation
<br /> �•.� s. .: F . . 5690 I- - - 5690
<br /> - Existing Topo
<br /> \ 5685 -_
<br /> � I 22.'S Degree, 18 in. Existing Road 5685 Completed Pond
<br /> Elbow connection Corrugated Metal Pipe, 18
<br /> 5680 I __ 5680- o ope 5675
<br /> .,z 7
<br /> 56 5 - Invert Elev
<br /> Elev. 5678.0-- Hor. Scale 1"=20'
<br /> 5670
<br /> \...
<br /> `... �I 0+00 0+10 0+20 0+30 0+40 0+50 0+60 0+70 0+80 0+90 1+00 Vert. Scale 1"=20'
<br /> 24 CMP Culvert Installed (C175)
<br /> \....� .. _ See Note 5
<br /> 1
<br /> ,.�.'��� See Maps 2.03.4-1, 2.03.4-2, 2.04.7-1A,
<br /> C 2.05.3(3)-19 2.05.3(3)-3 & 4.05.18-1 for
<br /> \.., ZA current permit boundary. The updated
<br /> boundary will be included on this map
<br /> of Reclamation, during the next midterm review.
<br /> pivisicn
<br /> M �n &Safe$y
<br /> Legend
<br /> N -�••----� Permit Boundary
<br /> Profile
<br /> 50' 0' 50' 100' Completed Pond Contour
<br /> Plan View
<br /> Pond 0 � 8
<br /> n truction Notes: 1" - 50' _ Ditch Existing
<br /> Cos -
<br /> Topo: Current Topo outside of construction limits, Ditch Proposed
<br /> with planned final topograph within pond area
<br /> 1. Site Preparation: W
<br /> " d amount of fill placement, as the impoundment is largely subgrade. Streams
<br /> This site has a very limited p p g y
<br /> Prior to placing fill, the area will be be stripped of organic topsoil or other deleterious materials.
<br /> Construction Boundary
<br /> 2. Acceptable Fill Materials: TR-85
<br /> p
<br /> these soil es SC GC CL and CH . Bedrock materials will be Approved 1/17119 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 types Area- CapacityTable
<br /> " 1 size of 6 inches. The field en ineer ma a rove the use of other materials.
<br /> processed to produce a soil like material with maximum particle g ,y pp
<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 /> for use as embankment fill include cleaner sand and ravel. 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 /> Materials not considered suitable o g
<br /> also not acceptable. Frozen soil is not acceptable, 0. 11 0. 11 Plan View location. SE 114 section 6 T46N R15
<br /> materials containing construction debris areas p p ENGINEERS CERTIFICATION
<br /> 1, Thomas C. Peterson, hereby certify that this 5670.0 7248 0. 17 0. 11 Page Attachment 2.05.3(3)-28, page 7
<br /> 4, Fill Placement and Compaction:
<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 dry density (AS TM D 698). The map has been reviewed by me and is true 0.20 0.20
<br /> p and correct to the best of my knowledge and
<br /> 1 will be started at the lowest point of the embankment. Fill placement and compaction will be observed and tested by qualified engineering firm.f"1l materia s p information, relying on information supplied 5671.0 10197 0.23 0.31 Portd 0� � PlanView an
<br /> placing and spreading of i p
<br /> mi Draw. by experts employed by New Horizons Mine and 0.27 0.27 Design Details
<br /> 5. A 24 inch culvert (C175) has been installed under the road at this location to route upstream drainage and irrigation runoff southward into Calamity that I 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 /> I have hereunder set my hand and affixed my seal. oRrGINAL DATE: �i15�2o15
<br /> m diameter culvert C176 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: : Frank
<br /> 7, As directed by the field engineer, an 18 inch minimum ( )
<br /> 0.40 (�.40 ti� ••�� APPROVED BY: ran
<br /> ��'��� FILENAME,
<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 from that shown in the capacity table. 5674.0 18544 0.43 1.31 do
<br /> Rlzo DWG No.
<br /> ��, 0 � 0.4 6 0.46 New Horizon Mine Map 2
<br /> ,�,% Q`O L C ��� Permit No.C-1981-008
<br /> •�'' o�.,•....',,.F� �'� 5675.0 21361 0.49 1.77
<br /> ` o� • C pel' kP ' P.0 Box 628,Nucia,CO.87424
<br /> 000
<br /> C� _ �o o 0 0.52 0.52 No, REVISION DATE BY CHK
<br /> 32257oft 5676.0 24085 0.55 2.29
<br /> �O'. �rZ¢�r�,:• TR- New design for Pond 018 9128115 TCP FKF
<br /> 69
<br /> WOO
<br /> ,���S/pNA E� ���* 5677.0 27487 0.63 2.88 69 Added Freeboard and spillway notes. 11/25/15 TCP FKF
<br /> I�1 �
<br /> THOMAS C PETERSON 0.67 0.67 and capacity, and 04/21/16 TCP FKF
<br /> Revised embankment, p
<br /> P.E. No. 3 257 5678.0 30628 0.70 3.55 72 profiles, and spillway details.
<br /> .��2 4��G TR-
<br /> DATE 73 Update Permit Boundary 05/19/16 TCP FKF
<br /> Pond 018 Map 2 TR72.dwg
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