NCG021008_Scanned Site Plans_20221122

EROSION CONTROL LEGEND
TOP OF BERM
SEDIMENT BASIN
WIER
ROCK CHECK DAMS
-
SILT FENCE
SF
TEMPORARY DIVERSION DITCH
OUTLET PROTECTION (�
J-HOOK W1 SILT FENCE OUTLET 4
SILT FENCE OUTLET
}
Y I SB#
w I NO OUTLET
v
STORMWATER OUTFALL#2
" N: 584708.7966
.. E: 2465306.1331
" LAT: N35.3465
1 , ' LONG:W77.4395
6 v
NOTES:
1. PROPOSED PERMANENT BERM SHALL BE CONSTRUCTED TO ENCOMPASS EXCAVATION AREA THROUGHOUT
EACH STAGE AS PER THE PROPERTY/WETLANDS BOUNDARY VEGETATIVE BUFFER/BERM CROSS-SECTION
BELOW.
2. ALL EXCAVATION ADJACENT TO JURISDICTIONAL WETLANDS WILL BE BUFFERED WITH A 50' WIDE UNDISTURBED
BUFFER AND A 50 FT WIDE x 6.25 FT HIGH VEGETATIVE BERM AS PER THE PROPERTYANETLANDS BOUNDARY
VEGETATIVE BUFFER/BERM CROSS-SECTION BELOW.
3. AREAS WITHIN FLOODWAY NOT TO BE DEVELOPED IN FUTURE PHASES.
4, STREAM AND WETLAND LOCATIONS ARE PER LENOIR COUNTY GIS DATA AND PREVIOUS APPROVED MINE PLANS
FROM EXPIRED MINE PERMIT, PREPARED BY MCKIM & CREED ENGINEERING.
.�
�TD #7
AREA (TYP)
134.5 AC +/-
BASIN ID TOP BOTTOM POOL TOP BOTTOM VOLUME VOLUME
DIM DIM DEPTH EL. EL. REQUIRED PROPOSED
PROPOSED BASIN TABLE
WEIR WEIR WIER RISER BARREL
LENGTH DEPTH LINING SIZE SIZE
RISER
BASE
SKIMMER SKIMMER BAFFLES
ORIFICE SIZE _
SB#1 105x210 55xl10 5 20.0 14.0
19.296 CF
51,250 CF
12 2
A
NA NA
NA
NA
NA
NA
SB#2 180x360 130x260 5 20.0 14.0
70.776 CF
212,500 CF
45 2
A
NA NA
NA
NA
NA
NA
SB#3 140x280 90x180 5 20.0 14.0
39,762 CF
112,500 CF
30 2
A
NA NA
NA
NA
NA
NA
SB#4 180x360 130x260 5 20.0 14.0
72,954 CF
212,500 CF
50 2
A
NA NA
NA
NA
NA
NA
SB -SEDIMENT BASIN
STABILIZE AND SEED ALL SLOPES IMMEDIATELY
EMERGENCY SPILLWAY TO BE CONSTRUCTED IN
CUT ONLY
SEE DETAIL CROSS-SECTION FOR ELEVATIONS
CHANNEL ID
CHANNEL SLOPE
SIDE SLOPES
PROPOSED DIVERSION TABLE
CHANNEL DEPTH BOTTOM WIDTH TEMPORARY LINING
PERMANENT LINING LINING DEPTH_
TD#1
0.8 %
3:1
1.5 FT
0.0
NAG S75BN
BERMUDAGRASS -
TD#2
0.1 %
3:1
2.5 FT
0.0
NAG S75BN
BERMUDAGRASS -
TD#3
0.1 %
3:1
2.5 FT
0.0
NAG S75BN
BERMUDAGRASS -
TD#4
0.4 %
3:1
2.0 FT
0.0
NAG S75BN
BERMUDAGRASS -
TD#5
0.3 %
3:1
2.0 FT
0.0
NAG S75BN
BERMUDAGRASS -
TD#6
0.2 %
3:1
2.0 FT
5.0
NAG S75BN
BERMUDAGRASS -
TD#7
0.1 %
3:1
2.0 FT
10.0
NAG S75BN
BERMUDAGRASS -
TD#8
0.01 %
3:1
2.5 FT
10.0
NAG S75BN
BERMUDAGRASS -
TD#9
0.1 %
3:1
2.0 FT
10.0
NAG S75BN
BERMUDAGRASS -
TD#10
0.1 %
3:1
2.0 FT
0.0
NAG S75BN
BERMUDAGRASS -
INSTALL CHECK DAMS IN CHANNELS WITH
STRAW WI NETTING
�-
ROCK ENTRANCEI
CLASS A RIP RAPT
d=12"
MATCH CHANNEL WIDTH
VEGETATIVE BERM (TYP
H=6.25 FT
W=50FT (AT BASE)
WASTE WATER OUTFALL #1' " SB # SIDE SLOPES=3:1
" N: 584125.6738 NO OUTLET ' ' - OCK ENTRANCE l � TD #8
\ y j E. 2465653.9176 �.,, „' CLASS A RIP RAP .. / \
�I\1' LAT. N35.3449 I, G
LONG:W77.43B4 ._ 1, MATCH CHANNEL WIDTH • ', `,','
` • .`. .
«� « .. •. Jul
%
.'�!FRU# 1' , , . , . A' _.,,.r,
LEMPORARY EMERGENCY STORMWATEROUTFALL #2
N: 584127,9069
SPILLWAY (TYP)
" E: 2469059,5472-j
• LAT: N35.3448
" .
w ."., .. " . . . " .. . W y� LONGW77.4270
•�r 50' MIN UNDISTURBED VEGETATIVE BUFFER (TYP
30' WIDE BERM BREA0' WIDE BERM BREAK W -
HAUL ROAD (TYP) .r'�•�' HAUL ROAD (TYP)
WETLANDS (TYP)
............ � SB#3' ROCK ENTRANCE
. NO OUTLET CLASS A RIP RAP
TO #2 d=12"
- MATCH CHANNEL WIDTH
`1 OCK ENTRANCE
CLASS A RIP RAP
d=IX' 30' WIDE HAUL
MATH CHANNEL WIDTH ROAD (TYP) =
TEMPORAAY EMERGENCY PIT #1
SPILLWAY (TYP) �� !`� TO #5 102.2 AC
\+ r-TD#4
-TD #1
-TD #6
FUEL TANK LOCATION-
W/SECONDARY CONTAINMENT
i.'. ,..,.,,..
DISTURBED AREAS
TAILINGS/SEDIMENT PONDS 4.4 AC
(AREAS INCLUDED IN MINE EXCAVATION)
STOCKPILES 3.0 AC
(AREAS INCLUDED IN MINE EXCAVATION)
OVERBURDEN 6.5 AC
PROCESSING AREA/HAUL ROADS 3.0 AC
MINE EXCAVATION 103.0 AC
OTHER MISC EXCAVATION 22.0 AC
(BERMS, DIVERSIONS, ETC.)
TOTAL AFFECTED AREA 134.5 AC
INTERNAL DRAINAGE = 109.8 AC
EXTERNAL DRAINAGE= 24 7 AC
30'x100'
CONCRETE
ENTRANCE PAD
- �, 0
30'x100'
CONSTRUCTION
ENTRANCE
V VEGETATIVE BERM (TYP)
p. A O H=6.25 FT
W-50FT(AT BASE)
SIDE SLOPES=3.1
G I I PIT#2
0.75 AC
\/ l SCALE HOUSE/SCALES (TYP}-/
`TD #9
�--- "�
J �• 0' WIDE BERM BREAK
HAUL ROAD (TYP)
_
B _
-
NO OUTLET
MERGENCY
SPILLWAY (TYP)
" w " LOODWAY (TYP)
"-"�""-•� PER FIRM MAP - •�• //J " Jj'
" . !
WASTE WATER OUTFACE #2
N: 583497.4430 r
EX 'PIT #2
PX- PfT #4
O B DE #2 - - - " i -" - - -.
E: 1 2470813.9158
N35.9158 - A
_ � W CAT: N35.3430
LONG:W77.4211�
s
y
-�_
.. . . " A )
- ERMITIPROPERTY BOUND P �
PER LENOIR COUNTY GIS -
" ..
.l
-
50' UNDISTURBED BUFFER (TYP) �/ / �/ /��//fV� ,(
DOUBLE ROW SILT FENCE
ALONG WETLANDS (TYP) INSTALLATION CONSTRUCTION SEQUENCE MINING ACTIVITY ' f-�-�
f - nL.�
1. REMOVE ALL TREES, BRUSH ) -
SITE ENTRANCE (PREVIOUSLY INSTALLED) EXIST1NCi GFtOUND(TYi#) -
SLOPE TOWARDS PIT 1. INSTALL SILT FENCE BELOW ALL DISTURBED AREAS WITH SILT FENCE OUTLETS PER PLAN. - - - -
2. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD GROUND COVER
BERM- ---`"
WETLAND BOUNDARY (TYP) 3 `3 ON FILL SLOPES IS ESTABLISHED. SILTFENCE (TYP)
�AeEE PLAN EROSION CONTROL
//�//A//A////A 1. CLEAR AND GRUB PIT AREA ENSURING POSITIVE DRAINAGE TO SEDIMENT BASINS
/A
2. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. SF SF SF SF SF SF
_ I 3. INSTALL PERMANENT BERM AROUND PITS.
WETLANDS I I If eo eorromWOPIT 4. MAINTAIN POSITIIVE DRAINAGE TO PITS.
5. REMOVE OVERBURDEN AND PLACE IN OVERBURDEN AREA.
6. INSTALL SILT FENCE PER PLAN BELOW ALL PERMANENT/TEMPORARY DIVERSIONS AND BASINITRAPS W/ SILT FENCE OUTLETS IN LOW
AREAS PER PLAN. Cr)
In
7. INSTALL SEDIMENT BASINS PER PLAN. STABILIZE AND SEED ALL SLOPES IMMEDIATELY. 2 FT SAFETY BERM (TYP)
NOTE 8. INSTALL TEMPORARY DIVERSIONS, STABILIZE AND SEED ALL SLOPES IMMEDIATELY. ONLY CLEAR AS NECESSARY TO INSTALL
1. SEE PLAN SHEET FOR WIDTH HEIGHT DETERMINED BY SIDE SLOPES. DIVERSIONS. MAINTAIN SILT FENCE AND SILT FENCE OUTLETS DOWN STREAM UNTIL TEMPORARY/PERMANENT LINING, AND GOOD I
2. WIDTH INDICATED ON PLAN IS BOTTOM WIDTH. GROUND COVER ON FILL SLOPES IS ESTABLISHED.
3, SEED PER VOLUNTEETEMPORARY/PERMANENTVEGETATION
SEEDING SCHEDULE. 9" ONCE BERMS ARE COMPLETE AROUND EXCAVATION AREA AND ARE STABILIZED AND SEEDED. MAINTAIN SILT FENCE UNTIL THIS TOPSOIL STOCKPILE TYP
4. NATURAL VOLUNTEER VEGETATION SHALL REMAIN. (TYP)
5. BERM ENDS SHALL 8E 4:1 SLOPES LIKE SIDE SLOPES. ACHIEVED. MAINTAIN ALL DOWNSTREAM DIVERSIONS AND SILT FENCE UNTIL GOOD GROUND COVER IS ESTABLISHED. PROVIDE BREAK IN T
6, SLOPES SHALL BE TRACKED WITH A DOZER DURING CONSTRUCTION BERM AT BASIN EMERGENCY SPILLWAYS DURING INITIAL PHASES OF CONSTRUCTION.
TO AID IN THE ESTABLISHMENT OF VEGETATIVE COVER. 10. ONCE GOOD GROUND COVER IS ESTABLISHED AND NO RUTTING OF SLOPES IS OCCURRING REMOVE ALL EROSION CONTROL MEASURES
7. ALL EXPOSED AREA SHALL BE STABILIZED BY ESTABLISHING WHILE MAINTAINING SILT FENCE ON DOWNSTREAM SIDE.
PERENNIAL VEGETATIVE COVER. 11. DEWATER ALL SKIMMER/SEDIMENT BASINS FOR MAINTENANCE AND REMOVAL WITH SILT BAG PER DETAIL, IF NEEDED,
12. MAINTAIN SILT FENCE AFTER MAJOR RAIN EVENTS. NOTES:
MAINTENANCE 13. STABILIZE AND SEED ALL DENUDED AREAS IN WHICH WORK WILL NOT RECOMMENCE WITHIN 7 WORKING DAYS OR 14 CALENDAR DAYS.
1. INSPECT ALL PERIMETER BERMS ON' = A WEEK AND AFTER EVERY MINING STABLIZE AND SEED ALL SLOPES PER NCDEQ STANDARDS
RAINFALL. IMMEDIATELY REPAIR EP' '=D SLOPES, RESTORE FOR TIME FRAMES FOR DENUDED SLOPES
ERODED SLOPES TO THEIR i' CONDITION AS SHOWN ON 1. BEGIN MINING ACTIVITIES. 2. AS EXCAVATION AREA IS EXPANDED POSITIVE DRAINAGE TO BE MAINTAINED TO EXCAVATION PIT.
THIS DETAIL AND RE-ESTABLISH
VP' TATION. 3. ONCE BASINS ARE TWO TIMES THE ORIGINAL SIZE, REMOVE SPILLWAY AND CLOSE BERM. INSTALL SILT FENCE PER SILT FENCE DETAIL
4. TEMPORARY SEED STOCKPILE AREAS THAT WILL BE DENUDED FOR 30 DAYS OR MORE.
WETLANDS BOUNDARY VEGETATIVE 5. MAINTAIN ALL EROSION CONTROL DEVICES WEEKLY AND AFTER MAJOR STORM EVENTS.
BUFFER/BERM CROSS-SECTION
NTS
STOCKPILE AREA
2:1 MAX SIDE SLOPES (TYP)
LEGEND
PERMIT BOUNDARY
EXISTING CONTOUR
WETLAND
BUFFER
AFFECTED AREA
CREEK
BERM
POND
2 0 0 100 200 400
SCALE: 1" = 200'
0
C�
RAFTING AND DESIGN O
SERVICES INC.
6728 Carbonton Road
Sanford, North Carolina 27330
[phone] phone
[e-mail]
F" IL�L:t
ENGINEERING, PLLC
3417 WinterI Circle, Sanford, NC 27330
PO Box 249, Sanford, NC 27331
Phone: [phone]
e-mail: [e-mail]
NC License #: P-0836
N Ga21D0�
PROFESSIONAL ENGINEER'S SEAL
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REVISIONS
AGENCY REVIEW ONLY
NOT FOR CONSTRUCTION
Scale:
Drawn by:
1"=200'
MDK
Sheet:
Designed by:
MDK
Reviewed by:
/� a
C4 Of 15
JEH
Project Number:
Date:
DDS JOB #: 2022-15
NOV 2022