NCC213685_NOT Closeout Documents (3)_20220622

\ -- - - - - - - !-I I
- - - - - - - - - - - - - - - - -
•� HICONE RD
JUNCTION BOX (#3)
TOP=831.42
INV. IN=826.32
INV. OUT=826.26
(PRIVATE)
75' 18"0 HDPE
CURB INLET (#4)
THROAT=829.76
INV. IN=825.19 . - -
INV. OUT=825.13 - 83:
(PRIVATE) _ _
Y
SLOPE=0.80%
00
� � I 832 /
/ 48' 18"0 HDPE I/
SLOPE=0.92%
DROP INLET (#1)
THROAT=830.93 / I
INV. OUT=827.43
(PRIVATE) I i
i
47' 18"0 HDPE
SLOPE=2.28%
. .
/
142' 18"0 HDPE _
SLOPE=0.82%
bi
E)
56' 18"0 HDPE
SLOPE=0.36%
CURB INLET (#5)
THROAT=830.71
INV. IN=823.96
INV. OUT=823.89
(PRIVATE)
831 / / 832
\ / ENDWALL (#7)
k INV.=823.67
(PRIVATE) 828
824
CURB INLET (#6) I l
THROAT=830.65 831
INV. IN=823.69 /
/ INV. OUT=823.62
(PRIVATE) - 26' 18"0 HDPE
AUTOZOfVE / SLOPE=0.00% Lc.I
824
CATCH BASIN (j2) F.F.E.=832.00
_
TOP-830.52
o
/
N 826
INV. IN=826.99
i
/
i
INV. OUT=826.92
/
828
(PRIVATE)
1
i
/
`
828
/
C.O.
iC.O.
832 _ i �� i _
830
826 - -
824
826
_
150' 8"0 PVC
/
--� SLOPE=1.0%
STORM PLAN
(ONSITE)
838
836
834
832
830
828
826
824
822
820
818
816
814
812
8104,
SCALE: 1 " = 30' HORIZONTAL
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F
NISHED GRAD
FINISHED
GRADE
_ TAIL
ATER=827.30
48 18"0 H
PE
-
SLOPE=0,8
7' 1800 HDPE
8"0 ROOF
DRAIN
= •28%
INV.=828.0
18 "0
00011WIV-Off
PONE)
_92.3.50
°
LOPE=0.00
Q10=3.5
CFS
10=5.1 CFS
Q10
6.3 CFS
Q10
7.3 CFS
10=7.6 CFS
1+00 0+00
1_00 3+00
2+00
STORM PROFILE (ONSITE)
SCALE: 1 " = 30' HORIZONTAL
1 " = 6' VERTICAL (5x)
DRAINAGE AREA
COMPUTATIONS -
PROPOSED
DRAINAGE
AREA
RUNOFF
COEFFICIENT
(C)
AREA
(ACRES)
TIME OF
CONCENTRATION
(MIN)
INTENSITY
10 YEAR
(IN/HR)
DISCHARGE
10 YEAR
(CFS)
COMMENTS
Al
0.8
0.79
10
5.5
3.5
To Area Drain (#1) (Lot 1 Drainage)
A2
0.8
0.17
10
5.5
0.8
Roof Drains
A3
0.8
0.19
10
5.5
0.8
To Catch Basin (#2)
A4
0.8
0.26
10
5.5
1.2
To Curb Inlet (#3)
A5
1 0.8
0.23
10
1 5.5
1.0
To Curb Inlet (#4)
A6
0.8
0.06
10
5.5
0.3
To Curb Inlet (#5)
A7
0.8
0.24
10
5.5
1.1
Detention / Sand Filter Area
TOTAL BMP AREA =
1.9
DISCHARGE TO BMP =
8.6
B1
0.6
1.20
15
4.6
3.3
Off -Site Drainage (Cross -Drain)
B2
0.8
0.32
10
5.5
1.4
To Proposed Road Inlet
B3
0.8
0.18
10
5.5
0.8
To Existing Road Inlet
TOTAL ROAD AREA =
1.7
OFF -SITE DISCHARGE =
5.6
Cl
1 0.3
0.51
10
1 5.5
0.8
On -Site Buffers, Sheet Flow, Bypasses BMP
TOTAL BYPASS AREA =
0.5
SHEET FLOW / BYPASS =
0.8
111 I I � I
/ II EX. INLET I I / STORM MANHOLE (#9)
/ COG #400 STORM MANHOLE (#10) 1 - -
( I I TOP=833.17 COG #400-
/ I 15" INV. IN=827.87 _ - - - - - - - - TOP=828.65
\I I I I I I 24" INV. OUT=827.91 INV. IN=823.47 - STORM MANHOLE (#11)fill - -
1 (PUBLIC) INV. OUT=823.52 COG #400
(PRIVATE) _ TOP=827.58
INV. IN=822.93 /
INV. OUT=822.88 /
(PRIVATE) /
0
/ I / 3024"0 RCP
I I I EX. ENDWALL 107' 24"0 RCP / I SLOPE=0.00%
SLOPE=4.15%
ark C
46' 24"0 RCP
I I SLOPE=1.28%
Q I / O In 0 ENDWALL
/ INV.=822.86
CDco 3 - 4 / co co I (PRIVATE)
1 11I I I I ----
-� I I LEVEL SPREADER
TOP ELEV.=823.5
0 ( (I II I / / (PRIVATE)
I I I I UGoI I J
1 � \
\ I I 1 15' 15' 0 RCP
U I I I SLOPE=0.70%
00 P/III I
LLJ
II �,
U CURB INLET (#8) I w
COG #402 ]
�
THROAT=833.49 I
�p 15" INV.=828.67 r I \ \ \ \ \ I
(PUBLIC)03
-
�`
838
838
836
836
834
834
832
832
830
830
828
828
826
826
824
824
822
822
820
820
818
818
816
816
814
814
812
812
810
810
AS -BUILT
\\\ \ 00 i1111 1,1iI I\ ,oK
N \ I I I c(lI II 111 I \
STORM PLAN (OFF -SITE)
SCALE: 1 " = 30' HORIZONTAL
00
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FINISHED
7GTZADlE­
HGL10
HGL
- °
10 ,
SLOP
0 RC
-
(P(/
$
24
RCP
11 24"0 RC
SLOPE_1.287.
LOPE=0.007.
10=1.4 CFS
Q10
5.5 CFS
Q10
8.9 CFS
Q10=8.9 CH
3+00
2+00
1+00
STORM PROFILE (OFF -SITE
SCALE: 1 " = 30' HORIZONTAL
1 " = 6' VERTICAL (5x)
HYDRAULIC COMPUTATION FOR STORM DRAINS
FROM
TO
DISTANCEz
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HYDRAULIC GRADIENT
VELOCITY
MINOR LOSSES
N
PAaRIS�>O
UPSTREAM
ELEVATION
DOWNSTREAM0
ELEVATION
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(FT)
CFS
CFS
CFS
INCHES
S.F.
FT/FT
FT/FT
FT
FT/S
FT/S
FT
FT
#1
#2
48
3.5
0.0
3.5
18
1.77
0.009
0.0012
0.06
829.09
829.03
0.0
2.0
0.00
0.06
1.25
0.06
0.12
830.93
1.84
#2
#3
75
0.8
4.3
5.1
18
1.77
0.008
0.0022
0.17
828.95
828.78
2.4
2.9
0.09
0.13
0.50
0.08
0.25
830.52
1.57
#3
#4
47
0.0
5.1
5.1
18
1.77
0.023
0.0022
0.10
828.72
828.61
2.9
2.9
0.13
0.13
0.50
0.06
0.17
831.40
1 2.68
#4
#5
132
1.2
5.1
6.3
18
1.77
0.008
0.0035
0.46
828.48
828.02
2.9
3.6
0.13
0.20
0.50
0.13
0.59
829.76
1.28
#5
#6
56
1.0
6.3
7.3
18
1.77
0.004
0.0048
0.27
827.85
827.58
3.6
4.1
0.20
0.26
0.50
0.17
0.44
830.71
2.86
#6
1 #7
1 26
1 0.3
1 7.3
1 7.6
18
1 1.77
1 0.000
0.0050
1 0.13
1 827.43
1 827.30
1 4.1
4.3
0.26
1 0.29
0.50
0.15
0.28
830.65
3.22
#8
#9
115
1.4
0.0
1.4
15
1.23
0.007
0.0010
0.12
829.09
828.97
0.0
1.1
0.00
0.02
0.50
0.02
0.14
833.49
4.40
#9
#10
107
0.0
5.6
5.6
24
3.14
0.042
0.0010
0.11
828.95
824.81
1.8
1.8
0.05
0.05
0.50
0.02
0.13
833.17
4.22
#10
#11
46
0.0
10.0
10.0
24
3.14
0.013
0.0020
0.09
824.73
824.64
3.2
3.2
0.16
0.16
0.50
0.08
0.17
828.65
3.92
#11
#12
30
0.0
10.0
10.0
24
3.14
0.000
0.0020
0.06
824.56
824.50
3.2
3.2
0.16
0.16
0.50
0.08
0.14
827.58
3.02
0+00
ENCROACHMENT PERMITS REQUIRED
THROUGH NCDOT FOR SIDEWALK, STORM
SEWER, WATER, AND SANITARY SEWER.
CALL 336-487-0100 FOR PERMIT.
838
836
834
832
830
828
826
824
822
820
818
816
814
812
810
STORM SEWER INSPECTION:
PRIOR TO PUBLIC STORM SEWER INSTALLATION, CONTACT ANDY
VINCENT AT 363-373-2336 TO SCHEDULE INSPECTOR.
AFTER FINAL TRC APPROVAL, SUBMIT ONE SET OF PLANS TO
THE ENGINEERING DEPT FOR RECORD PURPOSES. PLEASE CALL
336-373-2052 WITH ANY QUESTIONS.
NOTE: ALL CONSTRUCTION TO MEET CITY OF GREENSBORO
AND NCDENR STANDARDS. ALL PUBLIC STORM SEWERS MUST
BE INSTALLED PER NCDOT SPECIFICATIONS.
GRATE I NLET CAPACITY CHECK
INLETTYPE: NEENAH R-1878-A9G (30"X30")
INLETOPEN AREA: 2.5SQ. FEET
MAXIMUM ALLOWABLE PONDING: 0.5'
ASSUME 50% CAPACITY DUE TO CLOGGING
USING WEIR FLOW FOR DEPTHS OF 0.5' OR LESS [Q=3.0*P*d^0.5]
10-YEAR INLET FLOW
INLET CAPACITY
CATCH BASIN, A2
0.8 CFS
5.2 CFS
CURB INLET, A3
0.3 CFS
4.0 CFS
CURB INLET, A4
1.2 CFS
4.0 CFS
CURB INLET, A5
1.0 CFS
4.0 CFS
DI
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39998
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REVISIONS
1
2
3
4
5
6
7
8
9
10
SHEET NAME:
DRAINAGE PROFILE
DATE: 05/04/2021
DRAWN BY: CMB
CHECKED BY: BMB
PROJECT NO.: 19066
SHEET NUMBER:
C2.2

1/IATCrf T. IT -Al
PERFORATED PVC PIPE
E
AND
AreliI2
SAND FILTER UNDERDRAIN CLEANOUT DETAIL
N.T.S.
NOTE: IF SEDIMENT PRETREATMENT CHAMBER ACCUMULATES
TO ELEVATION 824.50, THEN THE FOREBAY SHALL BE
CLEANED OUT AND RETURNED TO ITS DESIGN STATE.
WATER QUALITY VOLUME REQUIRED=3,658 CF
WATER QUALITY VOLUME PROVIDED=4,500 CF
RIP RAP BERM
5' RIP RAP
SPLASH AREA
_WQV
ELEV=829.00
I
0
LTER BED
OUTFLOW
SAND FILTER CROSS SECTION
1 o' OVERFLOW
SPILLWAY
77f7�
SEE DETAIL THIS SHEET FOR
REQUIRED KEY TRENCH &
FILTER DIAPHRAGM
SEE PLAN VIEW FOR CONTINUATION.
WATER QUALITY UNDERDRAIN FLOWS
TO PUMP BASIN FOR DISCHARGE.
W,
36"x36" GRATE IN TOP SLAB
6" OVERFLOW WEIR OPENING CORNER SUPPORTS
(TYP. 4 SIDES) (TYP. ALL CORNERS)
4.
d. d ' d d.
d� .e
d
Q.
d d p d
r d
O
a ELEV.=827.2 ELEV.=827.2 ° 61,
d
ELEV.=826.5
d a
4' SQ.
d.
9" 0 ORIFICE 9" 0 ORIFICE----_
INV.=825.0 INV.=825.0
e
a
a.'
d
VWQV=3,700 C.F. /
_ e \
18" HDPE d. = d 1 d•
INV.=824.1
-q d d a
a BOTTOM OF POND
d .e d ° •e e'e < ELEV=823.0
A. A a
e 4• d'
id u
d •
e a' a
8" SIDE VIEW
FRONT VIEW
OUTLET CONTROL STRUCTURE
N.T.S.
E
RII
7 r.e Nw/ \��l IT��TTI.ITJ
PROFILE VIEW
SECTION VIEW
ELEV.=827.0
O II-IILY\ I.VI umr-IG
CONCRETE EMERGENCY SPILLWAY
N.T.S.
AS —BUILT
ENGINEER'S CERTIFICATION:
THE STORMWATER CONTROL STRUCTURE(S) SHOWN ON THIS PLAN ARE DESIGNED TO REDUCE THE PEAK FLOW RATES IN
THE POST -DEVELOPMENT 1-YEAR, 2-YEAR, AND 10-YEAR, 24-HOUR STORM EVENTS TO PRE -DEVELOPMENT PEAK FLOW
RATES.
CHRISTOPHER M. BERRY
NC PE #39998
ENGINEER'S CERTIFICATION OF STORMWATER QUALITY CONTROL:
I CERTIFY THAT, PURSUANT TO GENERALLY ACCEPTED ENGINEERING STANDARDS IN THE COMMUNITY, IT IS MY
PROFESSIONAL OPINION THAT RUNOFF FROM THE FIRST INCH OF RAINFALL FROM AREAS THAT ARE REQUIRED TO BE
CONTROLLED PER 30-12-3.12 OF THE GREENSBORO LAND DEVELOPMENT ORDINANCE IS CONTROLLED BY A PERMANENT
ENGINEERED STORMWATER QUALITY CONTROL THAT HAS BEEN DESIGNED TO MEET OR EXCEED THE REQUIREMENTS IN THE
GREENSBORO STORMWATER MANAGEMENT MANUAL.
CHRISTOPHER M. BERRY
NC PE #39998
ENGINEER'S STATEMENT OF POND AND DAM SAFETY
NOTE: IN ACCORDANCE WITH THE REQUIREMENTS IN ARTICLES G5 143-215.25A AND 143-215.26 OF THE NC DAM
SAFETY LAW AND NC ADMINISTRATIVE CODE 15A NCAC 2K.0200, THE REGIONAL ENGINEER IN THE WINSTON-SALEM
REGIONAL OFFICE WILL BE CONTACTED FOR THE DETERMINATION OF WHETHER THE PROPOSED DAM IS GOVERNED BY
OR EXEMPT FROM THE DAM SAFETY LAW.
CITY OF GREENSBORO REQUIREMENTS FOR 'FINAL C.O.'
#1 - SUBMIT COPY OF RECORDED OPERATION & MAINTENANCE AGREEMENT
AGREEMENT MUST REFERENCE OPERATION & MAINTENANCE PLAN FOR SCM
#2 - SUBMIT COPY OF RECORDED EASEMENT PLAT
PLAT MUST REFERENCE OPERATION & MAINTENANCE PLAN FOR SCM
#3 - SUBMIT SIGNED & SEALED ENGINEERS CERTIFICATION
#4 - SUBMIT SURVEYED 'AS -BUILT' OF SCM
#5 - FINAL INSPECTION TO BE PERFORMED BY CITY WATER RESOURCES DEPARTMENT
2 4 S
TOTAL LAND AREA
2.35 ACRES
BUILT UPON AREA TO
BMP
1.38 ACRES
59%
LOT 1 TOTAL AREA -
BOJANGLES
1.10 ACRES
BUILT -UPON AREA (TO BMP)
0.72 AC
31%
LANDSCAPE AREA
(TO BMP)
0.23 AC
10%
LANDSCAPE AREA
(BYPASS)
0.15 AC
6%
LOT 2 TOTAL AREA -
AUTOZONE
1.25 ACRES
BUILT -UPON AREA (TO BMP)
0.66 AC
28%
LANDSCAPE AREA
(TO BMP)
0.49 AC
21 %
LANDSCAPE AREA
(BYPASS)
0.10 AC
4%
.1" ".... PRO ILL VIEW
PIPE TRENCH
SECTION VIEW
18"0 HDPE
4"0 SCH 40 PVC
OUTLET FILTER DIAPHRAGM
N.T.S.
0
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REVISIONS
1
BULLETIN #1
06/08/20
2
3
4
5
6
7
8
9
10
SHEET NAME:
DETAILS
DATE: 05/04/2021
DRAWN BY: CMB
CHECKED BY: BMB
PROJECT NO.: 19066
SHEET NUMBER:
C2.3

12'-
2
v v v�s, v L,
I�II�IjI�I
• :
1 " DIA. WEEPHOLE
(4 REQ'D.)
PRE -CAST STRUCTURE PER
DOT HEAVY DUTY TRAFFIC
RATING. ROUND PRECAST Cf
BE SUBSTITUTED FOR SQUAI
CATCH BASIN
N.T.S.
SITE GRADING/STORM CONTRACTOR SHALL
BE RESPONSIBLE FOR MAINTENANCE OF ALL
CATCH BASINS DURING CONSTRUCTION.
ELEVATION
M I RAFI 140N
NON -WOVEN
FILTER FABRIC
OR EQUAL
(TYPICAL)
CAST -IN -PLACE
CONCRETE INVERT
6" THICK
WASHED STONE (TYP)
3
NOTE:
VERIFY ALL INLET/OUTLET
ORIENTATIONS PRIOR TO
FABRICATION
NOTE:
VERIFY ALL ELEVATIONS
PRIOR TO FABRICATION
6" OPENING ON ALL 18" APRON MIN
SIDES OF STRUCTURE 36" CAST IRON GRATE (TYPICAL)
WITH POSTS AT EACH
CORNER
MIN 6" THICK CONCRETE
APRON WITH 6x6 10/10 ❑❑❑❑❑❑❑❑❑❑❑
WWF
SLOPE 1/2"
THROAT ELEV.
III=III=1 X ..
— a
II- N -I
1=
o
rl
4' MIN.
WASHED STONE g"
ALL AROUND ^ ^�
1" DIA. WEEPHOLE
(4 REQ'D.)
PRE -CAST STRUCTURE PER
DOT HEAVY DUTY TRAFFIC
RATING. ROUND PRECAST CI
BE SUBSTITUTED FOR SQUAI
(APRON STILL REQUIRED ON
ROUND STRUCTURE, TOP
RISER SHALL BE RAISED TO
ACCOMMODATE APRON
THICKNESS)
=M DESIGNED TO RUN 1 PUMP
TIME (ALTERNATING STARTS)
.S:
NTROLS SHALL BE MOUNTED INSIDE A UL LISTED
ENCLOSURE AND INCLUDE CIRCUIT BREAKERS,
RCUIT FUSE, IEC RATED MOTOR STARTER, PUMP
1 ALTERNATOR RELAY. PANEL SHALL HAVE A
LARM BEACON. PANEL IS DESIGNED FOR REMOTE
i.
M HATCH:
RATED, 1/4" ALUMINIUM SKID -RESISTANT
ATE, STAINLESS STEEL TAMPERPROOF
& HINGES do SLAMLOCK. (H-20 RATING
PUMP
No.
TYPE
GPM TDH RPM
ELECTRICAL
HP V PH Hz
P-1
CARRY
30
20'
.5
120
1
50
P-2
CARRY
30
20'
.5
1 120
1 1
1 50
STORM PUMP DETAIL
N.T.S.
IT; ,
N.T.S.
SITE GRADING/STORM CONTRACTOR SHALL
BE RESPONSIBLE FOR MAINTENANCE OF ALL
CATCH BASINS DURING CONSTRUCTION.
NO. 4 BARS
M I RAFI 140N
NON -WOVEN
FILTER FABRIC
OR EQUAL
(TYPICAL)
CAST -IN -PLACE
CONCRETE INVERT
6" THICK
WASHED STONE (TYP)
KEYED NOTES
MARK
OTY
DESCRIPTION
1
2
30 GPM, 1/2 HP SUBMERSIBLE PUMP
2
2
STAINLESS STEEL CHAINS
3
1
DUPLEX CONTROL PANEL NEMA 4X FRP w/
GENERATOR RECEPTACLE
(MOUNTED & WIRED BY CONTRACTOR)
5
2
3" ELECTRICAL COUPLING
6
1
SS CABLE BRACKET
7
1
36" INSIDE DIAMETER WET HELL -
"CONCRETE OR FIBERGLASS ACCEPTABLE
9
1
36"x60" DOUBLE LEAF ALUMINUM HATCHWAY
10
1
SAFETY NET
12
2
1.W SCH 80 PVC DISCHARGE PIPE
13
2
1.25" SCH 80 PVC 90' ELL
14
2
1.2V CHECK VALVE
15
3
FLOAT SWITCH
45' OF 1.5" FM
_ JT
II FLOW
�_u
0
NEENAH R-3246
VULCAN V-4060-1
EAST JORDAN 703OM2
US FOUNDRY 5130-6168
N
o�\
PIPES
MIRAFI 140N
-III-I I II I �I I I� NON -WOVEN FILTER
Pip'l
I FABRIC OR EQUAL
WASHED STONE
DIA. WEEPHOLE
R EQ' D.
T-IN-PLACE
CRETE INVERT
6" THICK
WASHED STONE (TYP.)
CURB INLET WITH GRATE
N.T.S.
PRE -CAST CATCH BASIN, TRAFFIC RATING.
SITE GRADING/STORM CONTRACTOR SHALL
BE RESPONSIBLE FOR MAINTENANCE OF ALL
CATCH BASINS DURING CONSTRUCTION.
6"0 RIPRAP
12" THICK I
GEOTEXTILE ' I:
FABRIC
ELEV.=822.9
ELEV.=823.5
6"0 GROUTED
RIPRAP
4a°
a a a
a
a
I�
36"
�l
LEVEL SPREADER DETAIL
N.T.S.
- GEOTEXTILE
FABRIC
7
0
CONSTRUCTION
AS —BUILT
RIP -RAP
CONCRETE ENDWALL DETAIL
N.T.S.
RIP -RAP
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REVISIONS
1
2
3
4
5
6
7
8
9
10
SHEET NAME:
DETAILS
DATE: 05/04/2021
DRAWN BY: CMB
CHECKED BY: BMB
PROJECT NO.: 19066
SHEET NUMBER:
C2.4