C301C EC Plan

LEGEND
EXISTING PROPERTY LINE
— —
PROPOSED PROPERTY LINE
EXISTING BUILDING
,
L_J
PROPOSED BUILDING
0
MINE PERIMETER
PROPOSED SECURITY FENCE
—x—x—x—x—
TEMPORARY DIVERSION DITCH
TD>—
TEMPORARY SILT FENCE
PROPOSED ENERGY DISSIPATOR
TEMPORARY CHECK DAM
MINE HAUL ROAD
DISTURBED AREAjJ
STONE OUTLET
p
TEMP. SLOPE DRAIN
STONE INLET PROTECTION
n
S.D.O.
STONE DRAINAGE OUTLET
TEMP. SEDIMENT
FENCE (TYP.)
SEE DETAIL 2/C501
CONTRACTOR TO PROVIDE CURLEX I
EXCELSIOR MATTING ACROSS THE
ENTIRE LENGTH & WIDTH OF ALL
SLOPES 3H:1V AND STEEPER
t AOND
584'' `;
LIMITS OF
DISTURBANCE
St� �
�I L
CHECKDAM
CLASS I RIP RAP 4.5' Wx
1a'Lx1ss'werTHlcK rnQ /
' 6, TEMP. SEDIMENT
\ \ FENCE
STONE OUTLET /
%
FES-14
INV -606 40
f / — (SEE INSET AT ,MATCHLINE ""A —A
LEFT) \
CLASS I RIP RAP
sLx1Ds'w2rTHICK
"E5-i6 �- 0
Nv=sos.oD / / ""------620 FUTURE
EMERGENCY
,ACCESS ROAD
\S �� FES-15 / —622— \
\ LIMITS OF 6.00LF �0
/
DISTURBANCE J
\ LIMITS OF — ( ( / / �624` LIMITS OF
DISTURBANCE DISTURBANCE
32.00LF 15" RCP @ 2.50% /
CLASS L x W IRIP RAP 4.5'Wx
FES-13 / 9Lz 10.5'27' THICK
20 WIDE FUTURE EMERGENCY CLASS I RIP RAP 4.5' W x
ACCESS ROAD. CONTRACTOR 14' Lz 15.5' W 2r THICK
TO INSTALL &ABC STONE
AND KEEP ALL CONTOURS / / (TY
\ rHESAME 1 CO^ t(v` t /�.7` /--'628
CLASS I RIP RAP
2'W x 6'L x 2'W
21" THICK
_E\\ \�
STONE OUTLET (TYP.'
SEE DETAIL 7/C502
7' WIDE —
SPILLWAY
FLOATING
SKIMMER
DEVICE
_ \ \ ✓ i / y�
/ 2
\ \ \ LIMITS OF \ �^
MATCH. LINE "A —A"
' \ ' LIMITS OF \
/r, DISTURBANCE .830 6 DISTURBANCE
"A —A"
SCALE: 1"=60' \ I 1 , \ \ \ \ \ \ \ 20' WIDE EMERGENCY ACCESS ROAD `628�
CONTRACTOR TO INSTALL 8 INCHES
ABC STONEANDKEEP ALL \
CONTOURS
THE SAME
BOTTOM ELEVATION: 612.50
WATER LEVEL ELEVATION: 615.50
TOP DAM ELEVATION: 617.00
TOP OF DAM WIDTH: 5'
WEIR LENGTH: 7'
MIN SURFACE AREA: 2,227
MIN VOLUME: 5,139
ORIFICE DIA: 1.25"
SKIMMER SIZE: 2.00"
'
t \ \
SKIMMER
BASIN #21/
t 1 S.D.O. #21
POROUS BAFFLES
(TYP)
- TEMPORARY DIVERSION
DITCH (TYP.)
SEE DETAIL 3/C502
LaBeRa
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Winston-Salem, NC 27103
336-842-4065
C#0430
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L 1
© 2019 LaBella Associates
ALAMANCE
AGGREGATES, LLC
Mr. Chad Threatt, VP
Snow Camp Mine
1
3/31/20
NCDEMLR COMMENTS
N0:
DATE:
DESCRIPTION:
REVISIONS
PROJECT NUMBER:
2190335
DRAWN BY:
KCG/ATC/BWS
REVIEWED BY:
PAS
ISSUED FOR:
CONSTRUCTION
DATE:
4/9/20
CRAM 1Ilei IF1LI:
111=60'
SEDIMENTATION &
EROSION CONTROL
PLAN
DRAWING NUMBER:
C3O1 C