C301E EC Plan

�'' `'�� �". �"'`~`, \` ,- � `i, ., � '�,,, ""--� SKIMMER BASIN #2 �"'-•..�®"-.. _- `- { _�---- ._____
BOTTOM ELEVATION: 567.50.,......,._----
\l \4 WATER LEVEL ELEVATION: 571.00
TOP DAM ELEVATION: 572.50
TOP OF DAM WIDTH: 5' -- ---
\ WEIR LENGTH: 5'MIN _
\ _ 4 ~ MIN VOLUME3,050 C
SURFACE AREA: SQFT
O SKIMMER BASIN #1 - ' - _._ ORIFICE DIA: 1.00" - -
\ \ BOTTOM ELEVATION: 564.00 -_ ,_,r" ,""` �" SKIMMER SIZE: 2.00" 2'WCLASx 6 RIP R2AW
WATER LEVEL ELEVATION: 567.50 % / j ` ^ " ^ "' `may 21" THICK
j _.-- _ -
` TOP DAM ELEVATION: 569.00 J /� � .. `_ ,- l ----`" � ---. -'` �.--"" _ ---'.. _--- ------ '"
' TOP OF DAM WIDTH: 5' / / __ ` - "." FLOATING
( CLASS I RIP RAP WEIR LENGTH: 11' ` / CONTRACTOR TO EXTEND TEMPORARY 564 T �® SKIMMER --
`\ SKIMMER BASIN #16 2'W x 6'L x 2'W \ MIN SURFACE AREA: 3,570 SQFT \ J ' / SLOPE DRAINS AND RE -WORK DEVICET
\\ MIN VOLUME: 9,367 CUFT /\ ( (/ TEMPORARY DIVERSIONS AND STONE _- STONE OUTLET TYP.
ti BOTTOM ELEVATION: 569.00 , 21" THICK ORIFICE DIA: 1.50" %f
WATER LEVEL ELEVATION: 572.00 j i INLET PROTECTION AS THE l SKIMMER BASIN #2/ (TYP.)
TOP DAM ELEVATION: 574.00 - SKIMMER SIZE: 2.00" ( { OVERBURDEN SOIL FILL HEIGHT ?0 . S.D.O. #2 SEE
DErAIL 7/C502
TOP OF DAM WIDTH: 5 !! /' �SKIIMOMERIBASIN #16/ \ i INCREASES. 18" TEMP. SLOPE l .
WEIR LENGTH: 4' ! f �a \ -' - DRAIN - - J S0TEMP. SEDIMENT �T
i 5 �,. FENCE (TYP.)
MIN SURFACE AREA. 3,080 SOFT
MIN VOLUME: 6,405 CUFT FLOATING 74 CLASS I RIP RAP 3'W SEE DETAIL 2/C501
ORIFICE DIA: 1.50" SKIMMER STONE OUTLET (TYP.) ~ x 9.5' L x 3' W 27" y}h°
e R_I R E-TNCDOT�SKIMMER SIZE: 2.00" DEVICE / 1 r I E ~~ TYPE C2 NON -WOVEN TM- % SPILLWAY -
-..� SEE DETAIL 7 C502 %
\ , ' O 57 I ( ^�R GEOTEXTILE FABRIC:= _ _
1 I 57 --5&2 SKIMMER BASIN #1/ UNDERNEATH_
- CLASS I RIP RAP S.D.O. 81 �E ---- P POROUS BAFFLES
\ 2'W x 6'L x 2'W % i 11' WIDE (TYP)
21" THICK SPILLWAY / -= x-,_
x 1 X�X�X 18" TEMP. SLOPE � CLASS I RIP RAP 3'W � '`5 ----X DRAIN
V O r LLWAY x 9.5' L x 3' W 27" 80
SPI
t WITH NCDOT
_.
- TY EIC2 NON -WOVEN V-
GEOTEXTILE FABRIC
t ` POROUS BAFFLES
Y�� UNDERNEATH
xx (TYP) 18" TEMP. SLOPE
X_
/ x-_._x DRAIN
FLOATING
X�X�x _ SKIMMER
DEVICE TEMPORARY --- DITCH (TYP.)DIVERSION,
j ( SEE DETAIL 3/C502
/ % t� ' ✓ POROUS BAFFLES / /
(TYP)
� l � f F /
2 ASSW x I RIP
RAAW /.�/
/ / / / 21" THICK 1, %� FLOATING
DISTURBANCE/ j � \ ,. ,r-- s--
1 f ✓ / /� / I V 111 V r 1. DEVICE R 'r r 2 LIMITS OF
/ ' \/� TE P. SEDIMENT n O 1 DISTURBANCE
/
/ v / � � FENCE (TYP.) e' �4>�
O I I SEE EFAIL 2/C501 I / -
/ TEMPORARY DIVERSION
DITCH (TAP.) I DIST DISTURBANCE i I / / % SKIMMER BASIN #12/ %,CLASS
/ SEE DETAIL 3/C502 S.D.O. #12 J 1 RIP RAP 3'W
0 BOTTOMSKIMMERLLLEVATIONBASIN I:2 575.50 THICK WITH NCDOT7"
/ WATER LEVEL ELEVATION: 579.00 / P / �,� 80 TYPE 2 NON WOVEN
/ TOP DAM ELEVATION: 581.00 / // POROUS BAFFLES / / GEOTEXTILE FABRIC SKIMMER BASIN
% \ / TOP OF DAM WIDTH: 5' / - r / x WATER LEVEL ELEVATION:
574.00
,/ (TYP) ( UNDERNEATH
G r - 4' WIDE / / % } ' / WATER LEVEL ELEVATION: 574.50
�6 WEIR LENGTH: 4' TOP DAM ELEVATION: 575.50
1 ` MIN SURFACE AREA: 966 SQFT SPILLWAY h x TOP OF DAM WIDTH: 5'
MIN VOLUME: 1,712 CUFT A �{ / WEIR LENGTH: 15'
f ORIFICE DIA: 0.75" / / f MIN SURFACE AREA: 4,640 SQFT
SKIMMER SIZE: 1.50" / ' \ MIN VOLUME: 12,647 CUFT
I ' 1 STONE INLET N / ORIFICE DIA: 1.50" ~ R TEMP. SEDIMENT f / I PROTECTION (TYP.) SKIMMER SIZE: 2.00" C
_ FENCE (TYP.)
/ 90 SEE DETAIL 2/C501 f ( l \ STONE OUTLET (TYP.)
I / A \ i 1 x SEE DETAIL 7/C502
I % 18" TEMP. SLOPE /
J' _ DRAIN 15' WIDE /
( ' / - 1 I 620 - x SPILLWAY
r �/ TAILING POND #1 610 SKIMMER BASIN #3/
\ 50' UNDISTURBED / FLOATING WATER ELEVATION (WE) - 594' S.D.O. #3 `
o BUFFER I CLASS I RIP RAP ,� SKIMMER BOTTOM - 579' (DETAIL 4/C401) _ 5 0 ` �
Q` 2'W x 6'L x 2'W / DEVICE 600 POROUS BAFFLES ` ,
21" THICK A R SKIMMER BASIN #28/ VZNA\ \ (TYP) CLASS I RIP RAP
S.D.O. #28 590 x 221" 1" x THICKCK x 2'W
p ( f FLOATING ¢
SKIMMER
- \ I / CONTRACTOR TO PLACE CURLEX I DEVICE
- \ J f * EEXCELSIOR MATTING ACROSS THE ' 50' UNDISTURBED E �� ENTIRE LENGTH AND WIDTH OF ALL _ . _ ' BUFFER
SLOPES 3H:1V AND STEEPER. _ TEMPORARY DIVERSION
N , r" DITCH (TYP.)
WIDE - SEE DETAIL 3/C502
\ / SPILLWAY S
- 1 S THE WATER IS R ~ // S�
POROUS BAFFLES _5gc>�EEN TAILINGS OND LATED - \ t 1 SKIMMER BASIN #29/ TEMP. SEDIMENT
I 0' SKIMMER BASIN #28 (TYP) S 1&2• , ` S.D.O. #29 FENCE (T'P.)
I 1 / FLOATING ' \ \ \ ` SEE DETAIL 2/C501
� BOTTOM ELEVATION: 583.00 / �. SKIMMER \
WATER LEVEL ELEVATION: 586.00
! ( DEVICE
TOP DAM ELEVATION: 587.50 f ~ ` CLASS I `RIP RAP \ \ e \
I ( TOP OF DAM WIDTH: 5' 1 2'W x 6'L x 2'W
WEIR LENGTH: 4' 9 ` 21" THICK
MIN SURFACE AREA: 760 SQFT CLASS I RP RAP I
MIN VOLUME: 1,380 CUFT
ORIFICE DIA: 1.25" ' 221" THICK
1x THICK
x 2'W
SKIMMER SIZE: 3.00" m inFLOATING
to
SKIMMER
/ ((( 50' UNDISTURBED / DEVICE 60�� POROUS BAFFLES SKIMMER BASIN 929
A / CLASS I RIP RAP BUFFER \ �. - SKIMMER BASIN / ` - (TYP) BOTTOM ELEVATION: 579.50
2'W x 6'L x 2'W ` ( /J WATER LEVEL ELEVATION: 583.00 _ }
^ ` \ I S.D.O. #9 \ / TOP DAM ELEVATION: 584.50 ! FENCE�CONTRACTOR
/ 21 ° THICK \ / /
TOP OF DAM WIDTH: 5'
WEIR LENGTH: 4'
/` 'SHALL NOT CUT TREES
O�/ 4' WIDE / / j MIN SURFACE AREA: 700 SQFi I / WITHIN THE TOTAL 100
SPILLWAY / / MIN VOLUME: 1,331CUFT .r FOOT BUFFERAS
WIDTH
ORIFICE DIA: 1.50" AND MEANDER THE
{ DISTLIMITS OF URBANCE FLOATING f ! -- / SKIMMER SIZE: 2.00" SECURITY FENCE
j SKIMMER / /f / I x NEEDED. (TYPICAL))
O DEVICE %'� `,, �" �, SKIMMER BASIN #11
r <' ` /:- BOTTOM ELEVATION: 577.50 ey I \ E
o ( / WATER LEVEL ELEVATION: 581.00
r ` o� POROUS BAFFLES 9¢ '' z / // TOP DAM ELEVATION: 583.00 � f
15" TEMP. SLOPE \ SPIL WIAY \ (TYP) / /4 / �r
J TOP OF DAM WIDTH: 5' \ I v
n DRAIN f I / j ( \\ / % WEIR LENGTH: 4' h
�`` POROUS BAFFLES / � `� ( f MIN SURFACE AREA: 4,000 SQFT.-
° \ - B / SKIMMER BASIN #13/. ' (TYP) TAILING POND #2 MIN VOLUME: 10,283 CUFT E �\
` Os S.D.O. #13 I WE - 58< % f 1 ORIFICE DIA: 1.50"
\ s SKIMMER BASIN #9 BOTTOM - 569 \ / SKIMMER SIZE: 2.00"
\ i
-
' 11/
BOTTOM ELEVATION: 593.00 POROUS BAFFLES SKIMMER BASIN #
SKIMMER BASIN #13
BOTTOM ELEVATION: WIDE WATER LEVEL ELEVATION: 596.50 (TYP) _ "� - .-.- S.D.O. #i t
^ s, I WATER 603.00 TOP DAM ELEVATION:
WADTH: 598.50
io SPILWAY TOP D
S90 \ $8
CV DAM ELEVATION: 604.50
TOP OF DAM WIDTH: 5' WEIR LENGTH: 6' ` I �m �✓�
MIN SURFACE AREA: 5,940 SOFT \ dd a
STONE INLET '°� CLASS I RIP RAP {/' ,�• --�/"
I ~ T WEIR LENGTH: 10' MIN VOLUME: 16,034 CUFT _ \ ,
J PROTECTION (TYP.) MIN SURFACE AREA: 3,200 SQFT f 2'W x 6'L x 2'W /
4 \ _ ORIFICE DIA: 1.50" \ \ f
MIN VOLUME: 7,584 CUFT - 21" THICK
-614 a SKIMMER SIZE: 2.00"
/ \ ORIFICE DIA: 1.50" d �g0 \
H E ET C 3 01 SKIMMER SIZE: 2.00" / \
- TCHLINE-S R --
MA \ - ^ _ _. _ -t',_ � l SKIMMER MATCHLINE SHEET C301 C v-7'7
0
LEGEND
EXISTING PROPERTY LINE
- -
PROPOSED PROPERTY LINE
EXISTING BUILDING
r ,
L_J
PROPOSED BUILDING
E]
MINE PERIMETER
PROPOSED SECURITY FENCE
-x-X-x-x-
TEMPORARY DIVERSION DITCH
TD->
TEMPORARY SILT FENCE
PROPOSED ENERGY DISSIPATOR
TEMPORARY CHECK DAM
e
MINE HAUL ROAD
DISTURBED AREA
F J
STONE OUTLET
p
TEMP. SLOPE DRAIN
STONE INLET PROTECTION
r
S.D.O.
STORM DRAINAGE OUTLET
b� DEVICE
" f
4' WIDE
SPILLWAY
30 0 30 60 90 120
1" = 60'
LL O%E--x e%Ra
ol I G I Mb %;
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© 2019 LaBelle Associates
ALAMANCE
AGGREGATES,
Mr. Cha1
Snow Camp Mine
2
3/31/20 NCDEMLR COMMENTS
1
1/20/20
ADDITIONAL STREAM INFO - ALAM. AGG.
& LAND QUALITY COMMENTS
NO:
DATE:
DESCRIPTION:
REVISIONS
PROJECT NUMBER:
2190335
DRAWN BY:
KCG/ATC/BWS
REVIEWED BY:
PAS
ISSUED FOR:
CONSTRUCTION
DATE:
4/8/20
L&WAY1111I J.11851
11
EROSION CONTROL
PLAN
DRAWING NUMBER:
C301 t
PE
xf >
m
m m
a n.