C301D EC Plan_20200409

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LEGEND —
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5d UNDISTURBED �_� T _ 615 St. George Square
EXISTING PROPERTY LINE / '// I� BUFFER l 1 / �r Suite 300
PROPOSED PROPERTY LINE
MATCHLINE— SHEET C301 B Winston-Salem, NC 27103
336 842-4065
EXISTING BUILDING - �_] / ���' f
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if
C#0430
PROPOSED BUILDING � / / f � � I ---� ? � I I ` _ f f � '�`'` �� •� ,/_`"'_._.�.� Iabellapc.com
MINE PERIMETER
PROPOSED SECURITY FENCE —x—x—x—x— 'i j_f
l -
TEMPORARY DIVERSION DITCH TO �� I \ _�.
TEMPORARY SILT FENCE / f l I f A \\ A O �� GSA ."I'*
PROPOSED ENERGY DISSIPATOR r '" / / Ir / i __ \\ ~� �'
TEMPORARY CHECK DAM _
^ \ _ 22052 -
E `
MINE HAUL ROAD
/
DISTURBED AREA J / f \ _ \ f p \ i�� 9(�z' IM A - II
\ \ .S
STONE OUTLET �� �����t1 111�
1 \
TEMP. SLOPE DRAIN I �M N:� \ 1 6AO
1
STONE INLET PROTECTION .� \ \ \ ` \ 0
S.D.O. STORM DRAINAGE OUTLET \ \ \ r
TEMP. SE IMENTFENCE -/
SEE DETAIL 2/C501 I W
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1Ld
f , I
©2019 LaBella Associates
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ALAMANCE
AGGREGATES, LLC
Mr. Chad Threatt, VP
1 �
\SKIMMER BASIN #25/ �\ f /
\ POROUS BAFFLES
MINE DEWATERING SKIMMER BASIN #25
S.D.O. #25\ (TYP) BOTTOM ELEVATION: 630.30 !
WATER LEVEL ELEVATION: 633.30
TOP DAM ELEVATION: 634.80TOP / ~
_ \ \ 5' WIDE \ WEIR OLENGTH:F DAM WIDTH: 5'
\ \ � 50' UNDISTURBED
BUFFER ~ MIN SURFACE AREA: 1,475 SQFT
V '\ SPILLWAY MIN VOLUME: 3,057 CUFT
\\ �\ STONE OUTLET (TYP.) `' ORIFICE DIA: 1 00"
SEE DETAIL 7/C502 FLOATING SKIMMER SIZE: 2.00" / r
\ \ \ SDEVICE KIMMER \ \ 3�75'WxSS I10.5 1x14.25'W 27"
alb\ INV.=30.50 r THICK WITH NCDOT TYPE
LIMIT / 2 FABRIC UNDERNEATH
CLASS I RIP RAP S
\ ` \ 2'W' x6'Lx2'W _
21' THICK
STONE INLET TEMPORARY DIVERSION Snow Camp Mine
\ \ \ STONE OUTLET TY PROTECTION P.) DITCH (TYP.)
SEE DETAIL 7/C502 f SEE DETAIL 3/C502 /
\ 50' UNDISTURBED POROUS BAFFLES
(TYP)
BUFFER
I --- --.,
70.00 LF OF
FLOATING WIDE
SPI
SKIMMER SPILLWAY
\ / DEVICE 4
` 1 f
\ l v �� ✓ /LIMITS INV.=628.00 \
DISTURBANCE TEMPORARY DIVERSION \ 1 3/31/20 NCDEMLR COMMENTS
DITCC\
\ \ ( r I \ H (TYP). I \ \ \\ \ f I STONE OUTLET (TYP.) N0: DATE: DESCRIPTION:
\ \ SEE DETAIL 3/C502 REVISIONS
\ \ ( SEE DETAIL 7/C50; ` PROJECT NUMBER:
\ \ \ \ \ \ SKIMMER
I \ EXISTING DWELLING f \ \ BASIN
19 / CLASS I RIP RAP 2190335
\ APPROX. LOCATION / \ , \ \ #19
\ 1 / 1 21" x THICK
x 2'W \ ` DRAWN BY: KCG/ATC/BWS
SKIMMER BASIN #19 !/ 21" THICK
\ BOTTOM ELEVATION: 621.50 f REVIEWED BY:
WATER LEVEL ELEVATION: 624. 0 ' PAS
\ \
TOP DAM ELEVATION: 625.50 f
TOP OF DAM WIDTH: 5' ISSUED FOR:
WEIR LENGTH: 12' CONSTRUCTION
MIN SURFACE AREA: 3,960 SQFT
MIN VOLUME: 8,586 CUFTORIFICE ' DATE:
SKIMMER SIZE: 1.50" 4/9/20
\ \ \ \ \ \ \ \ o -� DRAWING NAME:
A
a
1"=60'
\ \\ \ \ Z \ \ \ SEDIMENTATION &
\ \ EROSION CONTROL
M21LZ3
\ 1 ` \ \ \ \ \ \ I ) I } I PLAN
E -�. ,\ ,\ ^� DRAWING NUMBER:
30 0 30 60 90 120
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