|
� EMP 22 Constructed /
<br />in 2018 for Service
<br />beginning in 2019 f
<br />[All within Buffer Boundary]
<br />Future
<br />EMP -22
<br />A Channel
<br />EMP -9- 4 ponds constructed in (2013) / Profile D
<br />10AFTotal Capacity Sheet 6 3s
<br />EN TP
<br />1.20 Acres outside the Historic
<br />Buffer boundary - J 0
<br />40 4M j
<br />Historic Recreation
<br />Buffer Bonn o Channel
<br />Channel - �� Profile F '
<br />Profile C 1 Sheet 6
<br />Sheet 6 EMP 09
<br />tu O Q
<br />�
<br />� 9/23 O 5r11
<br />j N
<br />� O o
<br />a o e
<br />a PCB Channel
<br />0 3 1 Lag Profile G
<br />ZJ) k c Sheet 6
<br />xcs EMP-Sa
<br />r
<br />[2013 -161
<br />EMP - -21 )o
<br />EMP -21- Constructed
<br />in 2014 Total
<br />Capacity10AF j
<br />n
<br />PO-A
<br />1111 -/23
<br />11
<br />Channel
<br />Profile E EMP �C48
<br />Sheet 6 -
<br />I J' ,
<br />Tributary
<br />SG VLF
<br />r )Poverty Gulch Storm Water Management Area
<br />�. Plan View
<br />1 " =500 ft (DSize)
<br />Q
<br />Tributary
<br />to SGOSA
<br />Poverty Gulch Storm Water Management Area
<br />2 Schematic
<br />Consu a
<br />Lower South and
<br />Upper South Ditches
<br />EIVI i�
<br />to %P7
<br />6MP-..
<br />r
<br />12o.4 ac '
<br />Grade Ditch
<br />along Existing Roads
<br />Pre and
<br />p Existing
<br />-� Depression as
<br />1
<br />Temporary EMP -08a
<br />. F Tributary
<br />%EMP OBz ro
<br />an4, AC_�
<br />5
<br />Preparation 2013
<br />Plan View
<br />4„ annn sr
<br />7 End of Year 2015
<br />Plan View
<br />1 " =I nnn tr mii7Pi
<br />9 End of Year 2017
<br />Plan View
<br />1" =1000 ft (DSize)
<br />SET Pare
<br />r
<br />EMP 09 /
<br />Channet
<br />Name
<br />Poverty Gulch Water Management Area
<br />100 yr
<br />Flow
<br />(cfs)
<br />Avg.
<br />Slope
<br />M
<br />including North Cresson Development on West Side
<br />Flow
<br />Depth
<br />(R)
<br />Chan.
<br />Depth
<br />(ft)
<br />Basin Basin Basin Basin Basin Existing Depression
<br />f
<br />y,,: nbutary fo�,
<br />• EMP -09 -
<br />NC -E1 NC -Di NC -C1 NC -81 NC Ai near Schist Island
<br />51
<br />-
<br />Unti12015 Until 201 EMP -08a
<br />•IhtlPaly to
<br />2.0
<br />8.6AF
<br />Me,:. nP
<br />NC -C
<br />North Cresson /Schist Island Near -term Controls al�-
<br />14.6
<br />3.5
<br />grading ditches along conveniently located Roads to Convey P 20
<br />LTti
<br />2.0
<br />9p Storm Water to existing Depression Areaat Schist Island
<br />y
<br />� -
<br />Tnbutary tc. ,eimz
<br />-� EMP -21-f �.ms
<br />o,
<br />o /
<br />Future -
<br />Natural UnG2015 Basin
<br />-
<br />2.5
<br />Charnel ♦� PG-F1
<br />•
<br />EM 22
<br />-
<br />Until 2015 Basin
<br />-�
<br />t,EAW22 /,�-
<br />!"Reconstruct
<br />Basin PG -B1
<br />_
<br />l
<br />PG-DI
<br />North Cresson 20
<br />--
<br />`
<br />a
<br />Basin Basin
<br />_r
<br />4.6
<br />Basin PG-C1 PG -A1 n
<br />1.5
<br />2.0
<br />Basin PG-E1 A
<br />Poverty GI 1
<br />PGA
<br />PG -G1 EMP -019 p
<br />Spillway
<br />234
<br />of
<br />10.0 AF Untit 2015
<br />)�I
<br />2.5
<br />EMP -022 Secondary Collection Below North Cresson System EMP -021
<br />'
<br />a
<br />1.9 AF and Permanent Collection and Delivery to EMP -009 7 5 AF
<br />I
<br />to Single Pond with a
<br />g
<br />capacity of 9.5 AF total
<br />or 6.7 AF Reconstruction
<br />Poverty Gulch Storm Water Management Area
<br />2 Schematic
<br />Consu a
<br />Lower South and
<br />Upper South Ditches
<br />EIVI i�
<br />to %P7
<br />6MP-..
<br />r
<br />12o.4 ac '
<br />Grade Ditch
<br />along Existing Roads
<br />Pre and
<br />p Existing
<br />-� Depression as
<br />1
<br />Temporary EMP -08a
<br />. F Tributary
<br />%EMP OBz ro
<br />an4, AC_�
<br />5
<br />Preparation 2013
<br />Plan View
<br />4„ annn sr
<br />7 End of Year 2015
<br />Plan View
<br />1 " =I nnn tr mii7Pi
<br />9 End of Year 2017
<br />Plan View
<br />1" =1000 ft (DSize)
<br />SET Pare
<br />r
<br />EMP 09 /
<br />Channet
<br />Name
<br />�
<br />100 yr
<br />Flow
<br />(cfs)
<br />Avg.
<br />Slope
<br />M
<br />Bottom
<br />Width (ft)
<br />Flow
<br />Depth
<br />(R)
<br />Chan.
<br />Depth
<br />(ft)
<br />RipRap
<br />D50(nom)
<br />f
<br />y,,: nbutary fo�,
<br />• EMP -09 -
<br />2.8
<br />51
<br />-
<br />e 837Acres
<br />��� d� �e 1
<br />•IhtlPaly to
<br />2.0
<br />Grass
<br />Me,:. nP
<br />NC -C
<br />4.9
<br />14.6
<br />3.5
<br />Construct EMP 22
<br />LTti
<br />2.0
<br />Grass
<br />y
<br />� -
<br />Tnbutary tc. ,eimz
<br />-� EMP -21-f �.ms
<br />14.3
<br />o /
<br />Future -
<br />to at least 1.4 AF Capacity ; ' t nmFe
<br />rr/
<br />-
<br />2.5
<br />I uture
<br />•
<br />EM 22
<br />-
<br />271
<br />End of Year 2019 to Mine Life
<br />11 Plan View
<br />1 " =1000 ft (DSize)
<br />End of Year 2014
<br />6 Plan View
<br />1 " =1000 ft (DSize)
<br />Legend
<br />Basin Name
<br />Area _ PGx
<br />101Aore72cfs- -100yr Discharge
<br />10yr Discharge 41 efs 10 AcreFeet -2 x i0yr Volume
<br />1'._\- Channel Name
<br />100- yrDischarge (cfs)
<br />10-yr Discharge (cfs)
<br />w m i ... w s Temporary or Existing Channel
<br />=i9imimimim Proposed New Channel
<br />miwimimiw Mining Boundary
<br />End of Year 2016
<br />Plan View
<br />1" =1000 ft (DSize)
<br />10 End of Year 2018
<br />Plan View
<br />-` 1" =1000 ft (DSize)
<br />6" +Hv @Q,o
<br />2 ►
<br />1 Width -- T
<br />;�tl� OOn OOn_,0�
<br />Bedding: Mirifi Drain Fabric
<br />or 6" well graded cobble
<br />to sand crushed stone.
<br />Channel Dimensions
<br />SEDCAD
<br />Model &
<br />Channel ID
<br />Channet
<br />Name
<br />10 -Yr
<br />Flow
<br />(cfs)
<br />100 yr
<br />Flow
<br />(cfs)
<br />Avg.
<br />Slope
<br />M
<br />Bottom
<br />Width (ft)
<br />Flow
<br />Depth
<br />(R)
<br />Chan.
<br />Depth
<br />(ft)
<br />RipRap
<br />D50(nom)
<br />Y" v
<br />NC -E
<br />2.8
<br />51
<br />3.5
<br />0
<br />1.5
<br />2.0
<br />Grass
<br />North Cresson 16
<br />NC -C
<br />4.9
<br />14.6
<br />3.5
<br />Construct EMP 22
<br />1.3
<br />2.0
<br />Grass
<br />p
<br />NC -B
<br />14.3
<br />o /
<br />Future -
<br />to at least 1.4 AF Capacity ; ' t nmFe
<br />rr/
<br />-
<br />2.5
<br />I uture
<br />•
<br />EM 22
<br />-
<br />271
<br />-�
<br />t,EAW22 /,�-
<br />!"Reconstruct
<br />Em ?2
<br />Ponds EMP-09b,
<br />_
<br />l
<br />EMP22
<br />North Cresson 20
<br />--
<br />`
<br />3.7
<br />_r
<br />4.6
<br />r
<br />c, and d in Backfill
<br />1.5
<br />2.0
<br />Grass
<br />Poverty GI 1
<br />PGA
<br />11.2
<br />234
<br />of
<br />South Globe Hill Mine Area
<br />)�I
<br />2.5
<br />6"
<br />'
<br />a
<br />14.4
<br />EMP -9a 9b &9c, �` %
<br />Functional 3 =;ass
<br />EMP -9d removed i ,I' at c�-.�
<br />to Single Pond with a
<br />g
<br />capacity of 9.5 AF total
<br />or 6.7 AF Reconstruction
<br />4.0
<br />s
<br />,
<br />�+ -El✓s 0, )
<br />,, , �,., , - -'
<br />_ ,-
<br />(� . .., .� ham, r . �
<br />.: ._,
<br />Z111,
<br />/�
<br />�,. , ,�, �
<br />I
<br />PG -C
<br />add � EMP -0 � �
<br />�^ ®ter
<br />C.1 �. � ..
<br />'r B6.a
<br />�.v
<br />g
<br />;, �✓ ,... �._M�' -ay- � , ,
<br />., , ... ,t
<br />'. l .. a ,
<br />�^ „'„ �
<br />/-
<br />`.
<br />�y.,.,
<br />. ,�-,
<br />at � �?
<br />���� -��
<br />-
<br />butary tc
<br />i
<br />., s °'
<br />I
<br />_
<br />i
<br />PG -D
<br />r '/' .; ♦
<br />)) i�'/ nbuta to ,.
<br />40.5 , --. •
<br />� �„
<br />.�
<br />.,
<br />-;i: a ,:
<br />'9 /'EA4P -Q° / ��,
<br />, t' 837Acres.
<br />.
<br />r
<br />�;�
<br />^a� °
<br />EMP -2 9-
<br />.102.6 Acre
<br />% k
<br />i
<br />/�✓ L Di to EMP- 9
<br />i � , > ^.
<br />/ �,�4
<br />i
<br />� q +, , � \
<br />��"•�
<br />PG -E
<br />:-�«
<br />pn
<br />�, �:i < ®p .
<br />y� Fi 9 - �
<br />,, ..
<br />^� \, 27%F/73%SI G Tributary to a
<br />the [Wine
<br />,
<br />- ---
<br />20
<br />.Construct EMP -21 `
<br />to at least 8.1 AF
<br />\
<br />PG -F
<br />° € Tributary
<br />to the Mine
<br />/'
<br />�J
<br />,EMR21
<br />v
<br />01.0
<br />2.0
<br />for use In 2015 ' EMP 27 t° �. -+,
<br />S ��
<br />. - 65.4 AC 1 1�`
<br />- _ Tnbutary to EMP- 8a
<br />�
<br />Poverty GI 18
<br />/ j`� EMP -21 �, �5
<br />I .!" m
<br />Tributary to
<br />ry
<br />t� `�
<br />-..
<br />f
<br />* a EMP- 55% F7 n
<br />"
<br />5
<br />7 \°
<br />x
<br />1;ibuPary to
<br />314P 21 -
<br />� ��b / � y p � �
<br />��' ♦'
<br />Tnbutary to EMP 08a
<br />� =� _
<br />-
<br />,0
<br />EMP -21-
<br />� * fi °'° o . qr d . .
<br />224 A„- cres
<br />",
<br />slope
<br />105-Z cues -, -
<br />_ Thhnharvtu
<br />End of Year 2014
<br />6 Plan View
<br />1 " =1000 ft (DSize)
<br />Legend
<br />Basin Name
<br />Area _ PGx
<br />101Aore72cfs- -100yr Discharge
<br />10yr Discharge 41 efs 10 AcreFeet -2 x i0yr Volume
<br />1'._\- Channel Name
<br />100- yrDischarge (cfs)
<br />10-yr Discharge (cfs)
<br />w m i ... w s Temporary or Existing Channel
<br />=i9imimimim Proposed New Channel
<br />miwimimiw Mining Boundary
<br />End of Year 2016
<br />Plan View
<br />1" =1000 ft (DSize)
<br />10 End of Year 2018
<br />Plan View
<br />-` 1" =1000 ft (DSize)
<br />6" +Hv @Q,o
<br />2 ►
<br />1 Width -- T
<br />;�tl� OOn OOn_,0�
<br />Bedding: Mirifi Drain Fabric
<br />or 6" well graded cobble
<br />to sand crushed stone.
<br />Channel Dimensions
<br />SEDCAD
<br />Model &
<br />Channel ID
<br />Channet
<br />Name
<br />10 -Yr
<br />Flow
<br />(cfs)
<br />100 yr
<br />Flow
<br />(cfs)
<br />Avg.
<br />Slope
<br />M
<br />Bottom
<br />Width (ft)
<br />Flow
<br />Depth
<br />(R)
<br />Chan.
<br />Depth
<br />(ft)
<br />RipRap
<br />D50(nom)
<br />North Cresson 1
<br />NC -E
<br />2.8
<br />51
<br />3.5
<br />0
<br />1.5
<br />2.0
<br />Grass
<br />North Cresson 16
<br />NC -C
<br />4.9
<br />14.6
<br />3.5
<br />0
<br />1.3
<br />2.0
<br />Grass
<br />North Cresson 17
<br />NC -B
<br />14.3
<br />34.0
<br />2.5
<br />0
<br />1.7
<br />2.5
<br />3"
<br />North Cresson 18
<br />NC -A
<br />271
<br />56.7
<br />50
<br />60
<br />0.7
<br />3.0
<br />6"
<br />North Cresson 20
<br />NC -D
<br />3.7
<br />8.3
<br />4.6
<br />0
<br />1.5
<br />2.0
<br />Grass
<br />Poverty GI 1
<br />PGA
<br />11.2
<br />234
<br />8.1
<br />0
<br />1.3
<br />2.5
<br />6"
<br />Poverty GI
<br />PG -B
<br />14.4
<br />29.0
<br />.7
<br />4.0
<br />1.2
<br />2
<br />3"
<br />Poverty GI 3
<br />PG -C
<br />9.4
<br />22.5
<br />3.4
<br />0
<br />1.4
<br />2.5
<br />3"
<br />Poverty GI
<br />PG -D
<br />17.6
<br />38.2
<br />15.5
<br />4.0
<br />0.8
<br />2.5
<br />3"
<br />Poverty Gl6
<br />PG -E
<br />3.6
<br />8.4
<br />14.4
<br />0
<br />0.8
<br />20
<br />3"
<br />Poverty GI 17
<br />PG -F
<br />4.8
<br />10.9
<br />20
<br />0
<br />01.0
<br />2.0
<br />3"
<br />Poverty GI 18
<br />PG -G
<br />8.8
<br />20.1
<br />5
<br />0
<br />0.6
<br />1.8
<br />6"
<br />3 unannei uimenslons
<br />Table
<br />13 Post - Reclamation
<br />Plan View
<br />1 " =1000 ft (DSize)
<br />(nom)
<br />Crest Area (Ac) 2 ft. (typ)
<br />Spillway
<br />Elevation
<br />Base Area (Ac)
<br />Sediment Allowance J
<br />(2 ft. typ) Pond Dimensions
<br />SEDCAD
<br />EMP-
<br />Depth
<br />Area
<br />Area
<br />Capacity
<br />Outlet
<br />E Spillway
<br />Spillway
<br />Model &
<br />Name
<br />Base
<br />Crest
<br />@Crest
<br />Pipe
<br />Width
<br />Elev.
<br />Structure ID
<br />(ft)
<br />(Ac)
<br />(Ac)
<br />(Ac-Ft)
<br />(in)
<br />(ft)
<br />N.Cresson IS
<br />F EMP -8a
<br />15
<br />.22
<br />.55
<br />10.5
<br />None
<br />6.0
<br />N/A
<br />Poverty GI 1
<br />EMP -09
<br />15
<br />.20
<br />4.5
<br />10.0
<br />None
<br />6.0
<br />Varies
<br />Poverty GI 20
<br />EMP -21
<br />15
<br />.09
<br />.0.8
<br />10.0
<br />None
<br />6.0
<br />9965.0
<br />PovertyG12
<br />EMP -22
<br />10
<br />.05
<br />03
<br />1.6
<br />None
<br />6.0
<br />10029.0
<br />Notes
<br />1. Pond sizes include 2 ft deep allowance for sediment accumulation.
<br />2. Emergency Spillways are generally 24- inches below crest.
<br />4 EMP- Pond Geometry
<br />Table
<br />
|