C301D EC Plan

LEGEND
EXISTING PROPERTY LINE
— —
PROPOSED PROPERTY LINE
EXISTING BUILDING
L_J
PROPOSED BUILDING
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 AREA
F J
STONE OUTLET
p
TEMP. SLOPE DRAIN
STONE INLET PROTECTION
S.D.O.
STORM DRAINAGE OUTLET
y ,
50' UNDISTURBED \ /
�— BUFFER
,. \
I j o
j � I
z� / \
2 l
TEMP. FENCE (TYP.) / I I—
I SEE DETAIL 2/C501 I I i. W
Ljj
\ �. \ \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
'�-- _.-- TOP DAM ELEVATION: 634.80
_ \ 5' WIDE ` WEIR OLENGTH:F DAM WIDTH: 5' / \
\ 50' UNDISTURBED
BUFFER MIN SURFACE AREA: 1,475 SQFT / H.P.
\ SPILLWAY MIN VOLUME: 3,057 CUFT
STONE OUTLET (TYP.) — ORIFICE DIA: 1 00"
SEE DETAIL 7/C502 FLOATING
SKIMMER SIZE: 2.00" / r
\ \ SKIMMER \ FES 5 CLASS I RI 'Lx14.25'W 27"
\, ~ DEVICE Ql '' INV.-630.50 ,\
\ \ ~ \ \ — THICK WITH NCDOT TYPE r\-
�. �NMG LI\� r/ 2 FABRIC UNDERNEATH
IN CLASS I RIP RAP
\ 2'N'x6'Lx2'W _
\ \ \ \ 21' THICK
STONE INLET
STONE OUTLET (TYP.) PROTECTION
\ SEE DETAIL 7/C502 !
BUFFERDISTURBED I v
70.00 LF OF
\ \ \ O \ \ 7' \ `--- _ _�� _ 15" RCP
FLOATNG
SKIMMER
/DEVICE �[
\ ✓ ! INV.=628.t0.0
DISTURLIMIBANCE TS OF/ I �
TEMPORARY
DITCH E(TYP.) I I
SEE DETAIL 3/C502
a /
\ \ / / SKIMMER
I \ EXISTING DWELLING f BASIN #19/
APPROX. LOCATION , ' S.D.O/. #19 /
SKIMMER BASIN #19 f /
BOTTOM ELEVATION: 621.50
WATER LEVEL ELEVATION: 624.50 /
\ \ TOP DAM ELEVATION: 625.50
\ \\ \ TOP OF DAM WIDTH: 5' r
WEIR LENGTH: 12' \
MIN SURFACE AREA: 3,960 SQFT /
\ \ \ \ r 1 MIN VOLUME: 8,586 CUFT
ORIFICE \ \ \ \ \ \ \ \ \ f \ ( DI1.75"
SKIMMERSIZE: 1.50" \
a
21
U
o�
TEMPORARY DIVERSION
DITCH (TYP.) f
SEE DETAIL 3/C502
POROUS BAFFLES
(TYP) � \
12' WIDE
—SPILLWAY
`\
STONE OUTLET (TYP.)
\ SSEEE
DETAIL 7/C502
— CLASS I RIP
RAP
2x
x 2'W
21" THICK
\
1 I
I I
I I
f I
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© 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
�su�uaLHararea
EROSION CONTROL
. 4►
DRAWING NUMBER: