SW1210902_Plansheet C2.0-2 - Grading_Drainage Plan_20220524

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PROJECT DATA BLOCK
OWNER/SELLER
CAROLINAS LLC.
DUKE ENERGY
550 SOUTH TRYON STREET
CHARLOTTE, NC 28202
DEVELOPER/BUYER
MINKLES BROADPOINTE II LLC.
DAVID GIBBONS
7 CHERRYWOOD ROAD
LOCUST VALLEY, NY 11560
PERMIT NUMBER
NOT YET ASSIGNED
PROJECT LOCATION
MILLS RIVER, NORTH CAROLINA
COUNTY
HENDERSON COUNTY
PID
9642-18-7974
SITE COORDINATES
LAT:35.425583 LONG:-82.554972
PROPERTY SIZE
9642-18-7974 MINUS DUKE AREA
TOTAL: 25.07 ACRES
STREAM DISTURBANCES
88.4 LF
SOILS TYPE
BoB, BRADSON GRAVELLY LOAM, 2-7% SLOPES
Cu, COMUS (COLVARD) FINE SANDY LOAM
EnB, ELSINBORO LOAM, 0-3% SLOPES
Ro, ROSMAN LOAM
BUILT UPON AREA
5.13 AC, 223,399 SF (19.96%)
BUILDING SETBACKS
60' FRONT (OFF OTHER STREETS)
15' SIDE
20' BACK
BUILDING DIMENSIONS
260'x460' = 119,600 SF
LIGHTING REQUIREMENTS
TO BE PROVIDED BY DUKE ENERGY
TOWNSHIP
MILLS RIVER
EXISTING ZONING
MR-LI
DISTURBED AREA
7.09 ACRES
WATERSHED
FRENCH BROAD
USACE / NCDEQ
YES
PERMITS REQUIRED
LLJ
o / 2
2' MIN
NOTES:
1. BOTTOMS AND SIDES OF DITCH TO BE SOD; SEE
LANDSCAPING PLAN ON SHEET C6.0
DITCH CROSS SECTION DETAIL
SCALE: NOT TO SCALE
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NOTES:
1. INSTALL MATTING AND SEED FILL SLOPE EVERY 8 VERTICAL FEET, AS SLOPE IS
CONSTRUCTED,
2. INSTALL FILL MATERIAL IN 8" LIFTS MAXIMUM AND COMPACT TO 95% MDD OR AS
RECOMMENDED BY THE OWNER'S GEO-TECHNICAL ENGINEERING CONSULTANT.
3. CONSTRUCTED FILL SLOPE SHOULD BE "BENCHED -IN" STEEPER THAN THE DESIGN
GRADE THEN CUT BACK TO THE DESIGNED SLOPE OR RECOMMENDED BY THE
OWNER'S GEO-TECHNICAL ENGINEERING CONSULTANT.
BENCHED FILL SLOPE
SCALE: NOT TO SCALE
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STATE OF NORTH CAROLINA
PIN: 9632997712
DB 374 PG 28
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(TYP). SEED AS SPECIFIED AND
STABILIZE W/ SC150 STAPLE PATTERN
C OR APPROVED EQUIVALENT. SEE
°v DUKE ENERGY DETAIL ON THIS SHEET
/�� CAROLINAS, LLC.
PIN: 9642187974
DB 3281 PG 488
PB 2018 SLIDE 11535
LIMIT OF 88.4 LF /Oc,OZ
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ON THIS SHEET, AND
TABLE ON SHEET C2.2
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TABLE ON SHEET C2.2
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60' R/W AND VARIABLE WIDTH R/W D
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PROJECT DATA BLOCK
OWNER/SELLER
CAROLINAS LLC.
DUKE ENERGY
550 SOUTH TRYON STREET
CHARLOTTE, NC 28202
DEVELOPER/BUYER
MINKLES BROADPOINTE II LLC.
DAVID GIBBONS
7 CHERRYWOOD ROAD
LOCUST VALLEY, NY 11560
PERMIT NUMBER
NOT YET ASSIGNED
PROJECT LOCATION
MILLS RIVER, NORTH CAROLINA
COUNTY
HENDERSON COUNTY
PID
9642-18-7974
SITE COORDINATES
LAT:35.425583 LONG:-82.554972
PROPERTY SIZE
9642-18-7974 MINUS DUKE AREA
TOTAL: 25.07 ACRES
STREAM DISTURBANCES
88.4 LF
SOILS TYPE
BOB, BRADSON GRAVELLY LOAM, 2-7% SLOPES
Cu, COMUS (COLVARD) FINE SANDY LOAM
EnB, ELSINBORO LOAM, 0-3% SLOPES
Ro, ROSMAN LOAM
BUILT UPON AREA
5.13 AC, 223,399 SF (19.96%)
BUILDING SETBACKS
60' FRONT (OFF OTHER STREETS)
15' SIDE
20' BACK
BUILDING DIMENSIONS
260'x460' = 119,600 SF
LIGHTING REQUIREMENTS
TO BE PROVIDED BY DUKE ENERGY
TOWNSHIP
MILLS RIVER
EXISTING ZONING
MR-LI
DISTURBED AREA
7.09 ACRES
WATERSHED
FRENCH BROAD
USACE / NCDEQ
YES
PERMITS REQUIRED
STORM SEWER STRUCTURE
TABLE
STR. #
RIM
INVERTS
DESCRIPTION
NW 18" 2059.57
3' SQ. PRECAST CONC. BOX, NCDOT
CI-2.3
2064.07
NE 24" 2059.55
STD. 840.46 W/ CAST IRON FRAME,
SW 15" 2059.59
TYPE "E" GRATE AND HOOD
ASSEMBLY, NCDOT STD. 840.03
3' SQ. PRECAST CONC. BOX, NCDOT
CI-2.4
2063.68
SE 18" 2060.93
STD. 840.46 W/ CAST IRON FRAME,
SW 15" 2060.95
TYPE "E" GRATE AND HOOD
ASSEMBLY, NCDOT STD. 840.03
FLARED END SECTION MATCHING PIPE
FES-1
2051.65
W 24" 2049.00
SIZE AND TYPE. PROVIDE OUTLET
STABILIZATION STRUCTURE AS
DETAILED.
FLARED END SECTION MATCHING PIPE
FES-2
2054.65
SW 24" 2052.00
SIZE AND TYPE. PROVIDE OUTLET
STABILIZATION STRUCTURE AS
DETAILED.
FLARED END SECTION MATCHING PIPE
FES-3
2063.63
SE 18" 2062.00
SIZE AND TYPE. PROVIDE OUTLET
STABILIZATION STRUCTURE AS
DETAILED.
FLARED END SECTION MATCHING PIPE
FES 2.2
2061.64
SW 24" 2059.49
SIZE AND TYPE. INSTALL 1' ABOVE
FOREBAY ELEVATION.
HW-1
2054.49
NE 36" 2051.28
NCDOT STD 838.01
HW-2
2052.81
SW 36" 2049.60
NCDOT STD 838.01
SW 18" 2063.19
4' DIA. PRECAST MANHOLE, NCDOT
JB-3.1
2066.89
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STD. 840.52 W/ CAST IRON RING AND
NW 18 2063.15
LID, NCDOT STD. 840.54
NE 18" 2063.38
4' DIA. PRECAST MANHOLE, NCDOT
JB-3.2
2069.38
��
S 18 2063.41
STD. 840.52 W/ CAST IRON RING AND
LID, NCDOT STD. 840.54
E 24" 2049.22
4' DIA. PRECAST MANHOLE, NCDOT
JB 1.1
2059.53
SW 18" 2049.26
STD. 840.52 W/ CAST IRON RING AND
S 10" 2057.00
LID, NCDOT STD. 840.54
4' SQ PRECAST CONC. BOX, NCDOT
SE 4" 2056.50
STD 840.46 W/ FRAME AND DROP
OCS-2.1
2062.50
NE 24 2053.28
GRATE, NCDOT STD 840.14. ALSO SEE
OUTLET CONTROL STRUCTURE DETAIL
ON SHEET C2.2
N NO. 405 hF
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S 10" INV=2057.00
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ON SHEET C2.3
it
CULVERT- 2, PROFILE
ON SHEET C2.3
SEE ENLARGED PLAN 78 LF OF 36"• HDPE
VIEW ON SHEET C2.2 - N-12 WT ST ®2.15%�
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STATE OF NORTH CAROLINA
PIN: 9632997712
DB 374 PG 28
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PIN: 9642187974
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-10' MIN. STORMWATER
r ACCESS AND MAINTENANCE
EASEMENT.
15" INV=2060.95� CI-2.3
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____SW - 272 LF OF 18" HDPE = RIM=2064.07
SE 18" INV=2060.93
WT ST �0%9907 NW 18" INV=2059.57
SW 15" INV=2059.59- _ 0-
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INV=2061.12' ON SHEET C2.30FI LE
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N-12 WT ST ® 0.52%
EXISTING GRADE
2070�
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066.89
RIM=2066.89 0)--
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18" INV=2062.00 1068 SW 18 INV=2063.19 43 LF OF 18" HDPE
168 LF OF 18" HDPE
N-12 WT ST ® 0.68%
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INV=2060.50'
lb
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BUT UT
INVERT=2063.26'
GENERAL NOTES:
1. ALL PIPES TO BE INSTALLED PER NCDOT STANDARD 300.01, SEE
SHEET 2.4 FOR DETAIL.
2. WHERE CURBS INTERSECT BUILDING SLAB, NO TOP OF CURB
ELEVATION SHOULD EXCEED THE FFE. TRANSITION CURB HEIGHT
AS NECESSARY OVER THE SPAN OF 6 FEET.
3. ALL EROSION CONTROL MATTING CALCULATIONS WERE PERFORMED
BY THE EROSION CONTROL MATERIALS DESIGN SOFTWARE, ECMDS
VERSION 7.0.
NW 18 INV=2063.15 N-12 WT ST ®-0.55%-
_-2067 206E
19 LF OF 18" HDPE_
N-12 WT ST ® 1.00% INVERT=20 066 .. 0'
- J B-3.2 INVERT=206C61
RIM=2069.38
NE 18" INV=2063.38UT-
S 18" INV=2063.4I
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DRAINAGE AREA MAP
SCALE: 1 "=80'
DA 7
DITCH CALCULATIONS
DITCH
DIMENSIONS
Q10 (CFS)
V (FT/S)
DEPTH (FT)
STABILIZATION
SHAPE: TRAPEZOIDAL
DITCH-1A
BOTTOM WIDTH=2'
2.67
2.24
0.42
SOD
MIN. VERT. DEPTH=1.2'
SHAPE: TRAPEZOIDAL
DITCH-1 B
BOTTOM WIDTH=2'
6.33
2.46
0.74
SOD
MIN. VERT. DEPTH=2.7'
SHAPE: TRAPEZOIDAL
DITCH-1C
BOTTOM WIDTH=2'
5.90
2.81
0.64
SOD
MIN. VERT. DEPTH=3'
SHAPE: TRAPEZOIDAL
DITCH-2
BOTTOM WIDTH=2'
24.76
5.92
1.03
SOD
MIN. VERT. DEPTH=2.5'
SHAPE: TRIANGULAR
EXISTING DIVERSION DITCH
MIN. VERT. DEPTH=1.2'
24.76
7.21
1.07
N/A
AVE. SIDE SLOPE=3:1
DRAINAGE AREA TABLE
DA
RECIEVING STORM
SYSTEM
ON -SITE
AREA (AC)
OFF -SITE
AREA (AC)
TOTAL
AREA (AC)
CN
ToC (MIN)
Q10 (CFS)
Q25 (CFS)
DA-1
TRENCH DRAIN
0.13
0.00
0.13
98.00
5.00
0.90
1.07
DA-2
CI-2.4
0.99
0.00
0.99
96.00
5.00
7.35
8.70
DA-3
CI-2.3
0.51
0.00
0.51
92.00
5.00
3.61
4.32
DA-4
DITCH-1 C
1.77
0.00
1.77
80.00
19.10
5.90
7.49
DA-5
DITCH-1 B
1.59
0.00
1.59
82.00
14.70
6.33
7.99
DA-6
DITCH-1 A
0.47
0.00
0.47
87.00
7.10
2.67
3.27
DA-7
EXIST. 18" CMP
0.00
25.20
25.20
62.00
33.90
26.41
38.85
DA-8
EXISTING DRAINAGE DITCH
0.67
25.20
25.87
62.00
33.90
24.76
36.90
DA-9
EXISTING STREAM
0.20
26.50
26.70
61.00
37.90
24.52
36.57
Know what's below.
Call before you dig.
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No. 1405 .r
Fw �
FES-1 /
" INV=204S
HW-2
SW 36" INV=2049.60
FW p�p'L
44 LF OF 24" HDPE
N-12 WT ST 0 0.50%
JB 1.1 Z
RIM=2059.53 Og0
SW 18" INV=2049.26I
S 10" INV=2057.00
E 24" INV=2049.22 _
I , ` 6 LF OF 10" HDPE /
N-12 WT ST 0 2.00%
o I HIV I I 111l �,
o �, TRENCH DRAIN SEE
PROPOSED IMPACTS I NCDOT DETAIL 840.30
STREAM 1 , ON SHEET C2.4.
(88.4 LF/0.006 AC) I
2060
78 LF OF 36" HDPE 58 LF OF 18" HDPE
N-12 WT STD 0I 0.50%
N-12 WT ST 0 2.15%j20
5 IIIIIIIIIII
BENCHED FILL SLOPE.
2:1 MAX. SEED AND
0 STABILIZE AS SPECIFIED.
HW-1 II I I I I
NE 36" INV=2051.28 I 1 I L I
EXISTING BYPASS
SWALE. TO REMAIN.
i 11
ENLARGED VIEW: TRUCK ENTRANCE
/ FES-2
SW 24" INV=2052.00i
/12' WIDTH RIP -RAP EMERGENCY
SPILLWAY. D50=8". INSTALL TO 16"
DEPTH OVER MIRAFI 140N EC FABRIC.
64 LF OF 24" HDP
-12 WT ST 0 2.00'
5 co
N 11 co
_ 1 0
OCS-2.1
RIM=2062.50
SE 4" INV=2056.50
2070NE 24" INV 0 3.28 II
SANDFILTER. SEE DETAIL
2066
BELOW 1,823 SF. MIN.
10' MIN. WIDTH ACCESS - ogoz
MAINTENANCE BERM.
�OgOZ
4.11
o
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o
c,.� 0co
rr$ 2.2
SW 24" INV=2059.49
2065.30 T �-
2064.80 P 2:1 SIDE SLOPES. STABILIZE-/-
W/ SOD, CONTINUOUS AROUND CI-2.3
RIM=2064.07
272 LF OF 18" HDPE SIDES &TOP OF BERM. NW 18" INV=2059.57
N-12 WT ST 0 0.50%-
�ssoa- - SW 15" INV=2059.59
=-------- NE 24" INV=2059.5��
ENLARGED VIEW: SAND FILTER
SCALE: 1 "=20' SCALE: 1 "=20'
STUB 4" SCH. 40 PVC UNDERDRAIN
INTO OUTLET CONTROL STRUCTURE.
4" STUB SERVES AS CONTROL
ORIFICE. INV. ELEV = 2056.50
COMPACTED SUBGRADE
SAND FILTER DETAIL
SCALE: NOT TO SCALE
- LINE BOTTOM AND SIDES OF SAND
FILTER CHAMBER AND RIP -RAP
FOREBAY W/ NON -WOVEN
SOIL SEPARATING FABRIC.
6" DEPTH J" WASHED STONE W/ 4"
SLOTTED PVC UNDER -DRAIN CENTERED
W/N STONE BED. SEE PLAN. PROVIDE TEE
SECTION AND CLEANOUT STANDPIPES AT
THE END OF EACH RUN.
FOREBAY. SEE DETAIL
BELOW 1,823 SF. MIN.
• I ,�1 (,/.tip
QUALITY CONTROL CALCS.
RV = 0.05 + 0.9 X IA
WHERE RV = RUNOFF COEFFICIENT
(STORM RUNOFF (IN) /
STORM RAINFALL (IN)), UNITLESS
IA = IMPERVIOUS FRACTION
(IMPERVIOUS PORTION OF DRAINAGE
AREA (AC) / DRAINAGE AREA (AC))
DRAINAGE AREA AT BUILD -OUT:
RV=0.05+0.9 (5.13/6.27)
RV = 0.786
AND WQV = 3630 X RD X RV X A
WHERE WQV = FILTRATION VOLUME (CUBIC FEET)
RD = DESIGN STORM RAINFALL DEPTH (IN) 1.0 FOR
MILLS RIVER
A = WATERSHED AREA (AC)
DRAINAGE AREA: WQV = 3630 X 1.00 X 0.786 X 6.27
WQV = 17.889 CIF
ADJUSTMENT FOR SAND FILTER = WQV X 0.75 = 13.417 CF
SURFACE AREA REQUIREMENT AT 4' AVG. DEPTH = 3,354 SF.
PROPOSED = 3,646 SF. (1,823 FOREBAY & 1,823 SAND FILTER)
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