20160655 Ver 1_Wetpond Plans_20160728

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PROP STORMWATER - - - - - - - Q
000p
000
MANAGEMENT ---364
EASEMENT ONO am -
MW
'lee,
LL1
ROWANN YEARGA
-AVa E
91ZE-
1A RIP RAPICROSSSINGS
N, N ond
SHERMAN -A. -YEAR(IANr JR., TRUSTEES OF,,THE Ilk 6" STO'N
TER RAND YEARGAN IRREVOCtAqU TnUST 0--
DE3 446T1 15G-2642 14"THICK
WAL
WATER QUALITY -,,365
x
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DRAW DOWN STRdCTURE 365­4�M# 1720-18-4732 363
9.95 AC DEEDED N, v,
N
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PROP. FES 362 drm UJ FJ co
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INV 327.0 00
0 00
z
EraEsa MAT 0
-MAL
PROP. 42 LF E
LO
LEVEL SPREADER 1< AREA rn (1) .2 LO
/0 rLA%<EMENT -7 70 LL
-f:tlP RAP APRON z W
(S% D TAILS NEXT SHEET)
9 -5HEET LU LU 7E o
LLC (.SEE CHARyTHM 0 z
TOP ELEV = 327.0 ls�
u i�
0
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(TO BE LEVEL) MAR� E,�J IV PAINTED J MAIN�EN C C E CO)
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N-1 N G\ITUDINAL SLOPE. :3 z (D 00
z 4-3 00
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J.OPES (MA)Q
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PROP. 30'LONG:R-4S WIDE \ER POOL "I N -6 LO
0 1POWEJR-tHASE�MEtSIT
VEGETATED BUFFER E�LE %je - cr..."
AVERAGE SLOPE = 1 J2 7 -9.5 `PROP DIT #1
% N
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PROP. 2 5SWING GATES MANAGEMENT
CHAINLINK FENCE SECURE WITH CHAIN & LOCK EASEMENT
z W
f r%
WETPOND BMP PLAN %Ll�
0
SCALE: 1 "=60' W (ft)
RIP RAP APRON PRIMARY & EMERGENCY
(SEE CHART THIS SHEET) OUTLET CONTROL D V
STRUCTURE -13
(SEE SHEET SUB-### OF 22 H
FILTER FABRIC h
RIP -RAP CHART
S 7 to mil h' R M
IN wi" Fq 490. Aft I 'I"Mm A C 3 E
C H A R 7
1J1_U%;n *R:1;_U1Ur4
PROJECT: WHITEOAK NW
Q -FLOW
DIA , OF
OUTLET VEL.
1M14
(L)
W
LOCATION: TOWN OF GARNER, WAKE COUNTY, NC
STONE
STRUCTURE NO. (CFS)
PIPE
REVISED:
(IN)
APRON LEN.
STORM FREQUENCY
THICK
CLASS
&
(IN.)
574-002
(FT.)
STORM DRAINAGE TO BE CL III RCP UNLESS OTHERWISE NOTED
(IN.)
HW -E 168
COMPUTED BY: GDM
N/A
14
20
20
26
CL I
HW -C 168
CHECKED BY: CTB
9.1
10
51
AREA (AC.) (CFS)
26
(FT)
(IN)
(FPS)
10.0
8
STRUCTURE OFFSITE
ONSITE TOTAL Q N
SLOPE
LENGTH
SIZE UP. ST. INV
DWN. ST. INV VEL EOP MH RIM
REMARKS
MATERIAL STD. DETAIL#
HW -E SMH-D
21.3 168
2.00
36
66 329.50
329.32 19.4
25YEAR
CLIIIRCP HW- D NCDOT # 838.33
34122
1
z
W
SMH-D HW -C
21.3 168
0.50
26
66 326.88
-
326.75 10.0 SMH-D RIM=336.0
25YEAR
CL I I I RCP O-RING JTS
UJ
340
W
W
-13
OS -B HW -A 5.8
Lf 1 0.2 110
0.50
46
48 324.00
1 323.77 10.0
25 YEAR ROUTED
CL I I I RCP O-RING I I S HW- D NCDOT # 838.33
1 if
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- - - - - - - - -
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ILDING
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go
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ftftft f = 12 AC 000� Y, 16.
PROP STORMWATER - - - - - - - Q
000p
000
MANAGEMENT ---364
EASEMENT ONO am -
MW
'lee,
LL1
ROWANN YEARGA
-AVa E
91ZE-
1A RIP RAPICROSSSINGS
N, N ond
SHERMAN -A. -YEAR(IANr JR., TRUSTEES OF,,THE Ilk 6" STO'N
TER RAND YEARGAN IRREVOCtAqU TnUST 0--
DE3 446T1 15G-2642 14"THICK
WAL
WATER QUALITY -,,365
x
N
DRAW DOWN STRdCTURE 365­4�M# 1720-18-4732 363
9.95 AC DEEDED N, v,
N
X
(SEE DETAIL NEXT SHJET) n
AZ
E
\04MN\\1�
-F
12'WIDEMAINTENANCE SFI�L
VE�
4;f -5% mAk.CR0_SS_
0 'N -SLOPE
�v '40
,v
J cli
4 N% 0
PROP. FES 362 drm UJ FJ co
!S;�
INV 327.0 00
0 00
z
EraEsa MAT 0
-MAL
PROP. 42 LF E
LO
LEVEL SPREADER 1< AREA rn (1) .2 LO
/0 rLA%<EMENT -7 70 LL
-f:tlP RAP APRON z W
(S% D TAILS NEXT SHEET)
9 -5HEET LU LU 7E o
LLC (.SEE CHARyTHM 0 z
TOP ELEV = 327.0 ls�
u i�
0
G C1
0 U_
20'WIDE ANCE A f 6
(TO BE LEVEL) MAR� E,�J IV PAINTED J MAIN�EN C C E CO)
ZED 4 Pd� TABOVE 150/0 lvil"%^ N
N-1 N G\ITUDINAL SLOPE. :3 z (D 00
z 4-3 00
P GS SL0PE f 1 1-1 ql;;4 -,, 5 .::; 00
4:1 S 50/& -MAX C,,�,� co W -dap
J.OPES (MA)Q
TYPICAL THROUGH LO LO
PROP. 30'LONG:R-4S WIDE \ER POOL "I N -6 LO
0 1POWEJR-tHASE�MEtSIT
VEGETATED BUFFER E�LE %je - cr..."
AVERAGE SLOPE = 1 J2 7 -9.5 `PROP DIT #1
% N
P9
STABILIZE WITH S\E\E CHA THIS_SriEET/)/// W
2: co
STRAW &NETTING -C cc
U_ U L)
Az
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0
Lo
N
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LL
- -----------
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Seal
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jXC 4SS� 1'ERt/L PLA'C'EMENT-AR`EAS ARE
�CCOMPACTE N
OORCLING TO S_P�CIFIC&TIONI�l
0
7
N\
1;: ZE :::�F OTE�S EET-S
f I
340,
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lu
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WAf ER.
PR6P f
-HI6H__Gt1\FAN_rZECJ /
1j, UTILI
xv/v/ (-TO­BF_ FLE z
k M
UJ
PROP. 2 5SWING GATES MANAGEMENT
CHAINLINK FENCE SECURE WITH CHAIN & LOCK EASEMENT
z W
f r%
WETPOND BMP PLAN %Ll�
0
SCALE: 1 "=60' W (ft)
RIP RAP APRON PRIMARY & EMERGENCY
(SEE CHART THIS SHEET) OUTLET CONTROL D V
STRUCTURE -13
(SEE SHEET SUB-### OF 22 H
FILTER FABRIC h
RIP -RAP CHART
1J1_U%;n *R:1;_U1Ur4
Q -FLOW
DIA , OF
OUTLET VEL.
d50
(L)
W
APRON
STONE
STRUCTURE NO. (CFS)
PIPE
(FPS)
(IN)
APRON LEN.
APRON WID.
THICK
CLASS
&
(IN.)
(FT.)
(FT.)
(IN.)
HW -E 168
66
N/A
14
20
20
26
CL I
HW -C 168
66
9.1
10
51
37
26
CL I
HW -A 110
48
10.0
8
42
29
18
CL B
LEVEL SPREADER, 0.65
12
2.9
4
10
43
9
CL A
S TABILIZATION � THICKNESS (I
__J
9" ROCK RIP RAP
1J1_U%;n *R:1;_U1Ur4
I ­
(n
12" PVC KNIVE VALVE SEE CHART
WITH STEM EXTENSION
&
Ix
0
VALTERRA
LL
0
WITH SLIP JOINT GLUED FITTINGS
342
BORING A101
(OR APPROVED EQUIVALENT)
34122
z
W
W
OUTLET
STRUCTURE
TOP OF BERM
0
UJ
340
W
W
-13
ELEV 336.0
340
F_
IX
W
-
- - -
- - - - - - - - -
- - - - - - - - -
_+_ -b- -
SEEZETAALS-SHEET-
-8,,-pVC KNIVE-VALVE.-
U)
z
TOP OF DAM
ELEV 334.0
Z T-
=) Z
SUB -9.1 OF 22
WITH STEM EXTENSION 8'MAIN. PATH
LL
338
0 <
0 3:
VALTERRA 4HGE6
338
LL
__z
UJ
WffH­ SLfF1-­J0fW GE-UED-FITTfNGS
0
I'_
0
(OR APPROVED EQUIVALENT) 12'MAIN. PATH
100 YEAR PEAK
336
z
0
2'
_W
a) (D
==
04
336
12'MAIN. PATH
z <
LU
SIAGE-3352B-
-
CL
-j-_
co iz--
10'WIDE LI ORAL DRAWDOWN TOP OF BERM 0.54' (6"
MIN.)
V 50 YEAR PEAK
334
SHELF (1 :1) ELEV 334.0 FREE BOARD
STRUCTURE YEAR PEAK STAGE 333.84
STAGE 334.78
334
CTB
0
nA
V 25 YEAR PEAK STAGE 333.04
Engineer
332
V 10 YEAR PEAK STAGE 32.46
332
SITE
GDM
Drawn By
1 WQ VOL. 330.90 v 1 YEAR PEAK STAGE 331.25
2
2
9/26/14
330
2
3
FOREBAY
W
HW -E
RIP RAp SWALE
330
kk
Date
yl
Cn
3:
2
1 10
PERM. POOL 329.50
66" 0 CL III RCP O-RING JTS.
evisions
328
W
328
9
1. 12/01/14 OWNER REQUESTS
IM
326
<
0
INV=325.0
326
0
X
(n
4811 0 CL III R CP O-RTNG JTS.
ELEV 325.0 11PVC
8
ELEV 325.0
324
SEDIMENT STORAGE
SEDIMENT STORAGE
324
BOTTOM ELEV =324.0
BOTTOM ELEV =324.0
322
INV ELEV
322
z
Y
INV ELEV
324.00
INV=324 20 12 11PVC
<
0
323.82
MAINTENANCE
DRAIN
GRAPHIC SCALE
Project Number
C4
6"TOPSOIL OVER 12" CLAY (MIN. 15% PASSING #200 SIEVE,
0
0
CONCRETE ANTI -SEEP COLLARS (2 MIN.)
COMPACT TO 95"STD PROCTOR, PROVIDE 1 TEST PER 4,000 SF)
60 0 30 60 120
240
574-002
4
(SEE DETAIL SHEET SUB-### OF 22
TYPICAL X -SECTION THRU DAM
OR 30 MIL POLY -LINER
I - I I 1
1
r11%
La
-
(SYNTHETIC LINER TO HAVE MAX. INFILTRATION RATE OF 0.01 IN/HR.)
(CONTRACTOR TO SUBMIT DOCUMENTATION & SOILS REPORT
TO ENGINEER FOR LINER).
i
dwm- AoftL U EMOL
-,% m9s 0
1 inch 60 ft
Sheet 10 of 2;
CL
-- -------------
------
- -------

CONSTRUCTION SPECIFICATIONS
These specifications are appropriate to all ponds within the scope of the Standard for
practice MD -378. All references to ASTM and AASHTO specifications apply to the most
recent version.
Site Preparation
Areas designated for borrow areas, embankment, and structural works shall be cleared,
grubbed and stripped of topsoil. All trees, vegetation, roots and other objectionable
material shall be removed. Channel banks and sharp breaks shall be sloped to no steeper
than 1:1. All trees shall be cleared and grubbed within 15 feet of the toe of the
embankment. Areas to be covered by the reservoir will be cleared of all trees, brush, logs,
fences, rubbish and other objectionable material unless otherwise designated on the plans.
Trees, brush, and stumps shall be cut approximately level with the ground surface. For dry
stormwater management ponds, a minimum of a 25 -foot radius around the inlet structure
shall be cleared. All cleared and grubbed material shall be disposed of outside and below
the limits of the dam and reservoir as directed by the owner or his representative. When
specified, a sufficient quantity of topsoil will be stockpiled in a suitable location for use on
the embankment and other designated areas.
Earth Fill
Material - The fill material shall be taken from approved designated borrow areas. It
shall be free of roots, stumps, wood, rubbish, stones greater than 6", frozen or other
objectionable materials. Fill material for the center of the embankment, and cut off trench
shall conform to Unified Soil Classification GC, SC, CH, or CL and must have at least 30%
passing the #200 sieve. Consideration may be given to the use of other materials in the
embankment if designed by a geotechnical engineer. Such special designs must have
construction supervised by a geotechnical engineer.
Materials used in the outer shell of the embankment must have the capability to support
vegetation of the quality required to prevent erosion of the embankment.
Placement - Areas on which fill is to be placed shall be scarified prior to placement of
fill. Fill materials shall be placed in maximum 8 inch thick (before compaction) layers
which are to be continuous over the entire length of the fill. The most permeable borrow
material shall be placed in the downstream portions of the embankment. The
principal spillway must be installed concurrently with fill placement and not excavated
into the embankment.
Compaction - The movement of the hauling and spreading equipment over the fill shall be
controlled so that the entire surface of each lift shall be traversed by not less than one
tread track of heavy equipment or compaction shall be achieved by a minimum of four
complete passes of a sheepsfoot, rubber tired or vibratory roller. Fill material shall contain
sufficient moisture such that the required degree of compaction will be obtained with the
equipment used. The fill material shall contain sufficient moisture so that if formed into a
ball it will not crumble, yet not be so wet
that water can be squeezed out. When required by the reviewing agency the
minimum required density shall not be less than 95% of maximum dry density with a
moisture content within t2% of the optimum. Each layer of fill shall be compacted as
necessary to obtain that density, and is to be certified by the Engineer at the time of
construction. All compaction is to be determined by AASHTO Method T-99 (Standard
Proctor).
Cut Off Trench - The cutoff trench shall be excavated into impervious material along or
parallel to the centerline of the embankment as shown on the plans. The bottom width of
the trench shall be governed by the equipment used for excavation, with the minimum
width being four feet. The depth shall be at least four feet below existing grade or as
shown on the plans. The side slopes of the trench shall be 1 to 1 or flatter. The backfill
shall be compacted with construction equipment, rollers, or hand tampers to assure
maximum density and minimum permeability.
Embankment Core - The core shall be parallel to the centerline of the embankment as
shown on the plans. The top width of the core shall be a minimum of four feet. The
height shall extend up to at least the 10 year water elevation or as shown on the plans.
The side slopes shall be 1 to 1 or flatter. The core shall be compacted with construction
equipment, rollers, or hand tampers to assure maximum density and minimum
permeability. In addition, the core shall be placed concurrently with the outer shell of the
embankment.
Structure Backfill -Backfill adjacent to pipes or structures shall be of the type and quality
conforming to that specified for the adjoining fill material. The fill shall be placed in
horizontal layers not to exceed four inches in thickness and compacted
by hand tampers or other manually directed compaction equipment. The material
needs to fill completely all spaces under and adjacent to the pipe. At no time during the
backfilling operation shall driven equipment be allowed to operate closer than four feet,
measured horizontally, to any part of a structure. Under no circumstances shall equipment
be driven over any part of a concrete structure or pipe, unless there is a compacted fill of
24" or greater over the structure or pipe.
Structure backfill may be flowable fill meeting the requirements of Department of
Transportation, State Highway Administration Standard Specifications for Construction and
Materials, Section 313 as modified. The mixture shall have a 100-200 psi; 28 day
unconfined compressive strength. The flowable fill shall have a minimum pH of 4.0 and a
minimum resistivity of 2,000 ohm -cm. Material shall be placed such that a minimum of 6"
(measured perpendicular to the outside of the
pipe) of flowable fill shall be under (bedding), over and, on the sides of the pipe. It
only needs to extend up to the spring line for rigid conduits. Average slump of the fill shall
be 7" to assure flowability of the material. Adequate measures shall be taken (sand bags,
etc.) to prevent floating the pipe. When using flowable fill, all metal pipe shall be
bituminous coated. Any adjoining soil fill shall be placed in horizontal layers not to exceed
four inches in thickness and compacted by hand tampers or other manually directed
compaction equipment. The material shall completely fill all voids adjacent to the flowable
fill zone. At no time during the backfilling operation shall driven equipment be allowed to
operate closer than four feet, measured horizontally, to any part of a structure. Under no
circumstances shall equipment be driven over any part of a structure or pipe unless there
is a compacted fill of 24" or greater over the structure or pipe. Backfill material outside the
structural backfill (flowable fill) zone shall be of the type and quality conforming to that
specified for the core of the embankment or other embankment materials.
36" x 24" STD CONCRETE DROP INLET _
NCDOT # 840.14 WITH 840.16 FRAME & GRATE
12" PVC SCREW 5'
TYPE PLUG
TOP ELEV = 330.5
8" PVC
I
N
D
D
6" PVC CAP W/ 5.50" ORIFICE
Q (WATER QUALITY DRAWDOWN )
0
N
D
O
1-0
WATER TIGHT BOOTS
CONCRETE SHALL
BE 3,000 PSI
d QQ
a c.
G d.. Q
d . BARRE da a
a
e.
d
e
USE SIDE WALL AND
BOTTOM OF TRENCH AS
FORM
COMPACT
OVER -EXCAVATION
TO 95% DENSITY
PER ASTM D-698
CONCRETE ANTI -SEEP COLLARS
TYPICAL SECTIONS
(NOT TO SCALE)
3 TO 6" LIP
6" x 6" TREATED TIMBER
( SECURE WITH # 3 BARS 48" O/C)
6"
AVGS`OpE_5%
mxy-
3" LAYER OF_�
# 57 STONE
36" WIDE STRIP
OF FILTER FABRIC
WATER QUALITY DRAWDOWN
STRUCTURE
(NOT TO SCALE)
TYPICAL SECTION
LEVEL SPREADER
NTS
PERM. POOL ELEV. = 329.5
MAIN POND 1 7
18" CLASS B RIP
RAP OVER
EARTHEN BERM
I a�
PERM. POOL ELEV. = 329.5
132
1 PRE -BAY
ELEV. =325.0
SEDIMENT STORAGE
ELEV. =324.0
001AWAAW
• �.
NTS
TOP OF FRAME & GRATE
ELEV = 332.50
TOP OF RISER
ELEV = 329.50
LITTORAL SHELF (10:1)
12" HDPE TO LEVEL SPREADER
INV OUT
ELEV = 327.38
12" CONCRETE
ANTI -FLOATATION BLOCK
( FILL BOX WITH
CONCRETE)
CONCRETE ANTI -SEEP
COLLARS
(2 TYPICAL IN DAM)
MAINTENANCE IS THE RESPONSIBILITY OF WHITE OAK NW ASSOCIATES, LLC.
1.
THE STORMWATER DETENTION BASINS / WATER QUALITY PONDS,AND STORM DRAINAGE
w z ®z = W w
ALL AREAS ABOVE THE PERMANENT POOL SHALL BE PREPARED &
SEEDED TO PERMANENT GROUND COVER SPECFICATIONS.
SYSTEM SHALL BE BUILT TO THE GRADES AND INVERTS SHOWN ON THE PLAN. THE
O
-Co WR 1-ZCA
CONTRACTOR SHALL PROVIDE & SUBMIT ASBUILTS OF STORM DRAINAGE & STORMWATER
IF THE BASIN MUST BE DRAINED FOR AN EMERGENCY OR TO PERFORM
THE PERMANENT WET DETENTION BASIN SHALL NOT BE
DETENTION POND (SEALED BY NCPLS) TO THE ENGINEER & TOWN OF GARNER PRIOR TO
MAINTENANCE, THE FLUSHING OF SEDIMENT THROUGH THE EMERGENCY
0 Z ® C- O Z n -
THE ISSUANCE OF A CERTIFICATE OF OCCUPANCY BY THE TOWN.
DRAIN (MUD PUMPS) SHALL BE MINIMIZED TO THE MAXIMUM EXTENT
4d d
w Q it W W
a- W 0 O Z
PRACTICAL. ALL COMPONENTS OF THE WET DETENTION BASIN SYSTEM
2.
AT THE CONCLUSION OF EACH PHASE OF THE PROJECT DRAINING TO A BMP, THE DESIGN
SHALL BE MAINTAINED IN GOOD WORKING ORDER.
4
PROFESSIONAL MUST CERTIFY THE BMP IS BUILT ACCORDING TO THE PLANS AND WILL
CONVERSION SHOULD BE COMPLETED AFTER THE ENTIRE DRAIN
d
Q d. Q
FUNCTION PER THE ORDINANCE.
Maintenance requirements are as follows:
d
d
fr
THE CONVERSION TO A PERMANENT STORMWATER BMP SHALL BE
3.
CONTRACTOR SHALL COMPARE ASBUILTS TO DESIGN DRAWINGS TO ENSURE
1. Debris and litter control checks for inlet, outlet, and orifice obstruction after every
a d
a
CONSTRUCTION IS IN COMPLIANCE WITH THE PLANS. THE ENGINEER SHALL BE
storm producing runoff.
COMPENSATED FOR ANY FURTHER ANALYSIS NECESSARY DUE TO CONSTRUCTION
1
'BLADDER' TYPE SYSTEM OR DISPOSED OF OFFSITE IN AN APPROVED
AND/OR MAPPING NOT IN ACCORDANCE WITH THESE PLANS.
2. Provisions for routine vegetation management/mowing. -Monthly
ul
ALL SEDIMENT REMOVED SHALL BE PLACED IN A DESIGNATED SPOIL
4.
CONTRACTOR SHALL SUBMIT SHOP DRAWINGS TO INSPECTOR FOR ALL NON-STANDARD
3. Check and repair at least as follows for:
u,
DRAINAGE STRUCTURES PRIOR TO CONSTRUCTION.
a. Sediment buildup - Remove every 7 years or whenever the sediment
5.
A MAINTENANCE PLAN MUST BE DEVELOPED AND RECORDED AT THE WAKE COUNTY
volume exceeds 50% depth
Cr
REGISTER OF DEEDS PRIOR TO RECEIVING A CERTIFICATE OF OCCUPANCY FROM THE
CL
TOWN.
b. Erosion along the bank and the need for reseeding or stabilization. Reseed
as necessary in fall & spring.
c. Erosion at the inlet and outlet and methods of stabilization.
Inspect monthly and repair with fabric and replace rip -rap as needed.
d. Seepage through the dam. Inspect monthly.
a
4
e. Operation of any valves or mechanical components. Inspect and exercise
4 � 4
d
yearly.
d
4 d d
f. Rodent management - As needed
a
a a
g. Unwanted vegetation - Inspect monthly and remove in spring.
a 4
h. Security & Vandalism - Inspect monthly.
USE WATEF
SEAL PI
( LINKSE1
TOP OF BOX ELEV =333.10
60.0" W x 14.0" H
RECT. WEIR
INV ELEV = 330.90��
(EAST & WEST SIDES)
1 YEAR WEIR
INV ELEV
= 323.00
6'x 6'x 10" CONCRETE
-//
ANTI -FLOATATION BLOCK
ELEV =322.1
SIDE ELEVATION
36" RISER
TYPICAL WETPOND CONVERSION NOTES
w z ®z = W w
ALL AREAS ABOVE THE PERMANENT POOL SHALL BE PREPARED &
SEEDED TO PERMANENT GROUND COVER SPECFICATIONS.
H U ca o- O O a
O -�' F- �
CD � O
O
-Co WR 1-ZCA
36" RISER
THE PERMANENT WET DETENTION BASIN SHALL NOT BE
Z Q O Q Z z O
ELEV =327.00
60" BASE
0 Z ® C- O Z n -
ANY SEDIMENT THAT ACCUMULATES WITHIN THE POND SHALL BE
Q I-- Z U) 0 Z ® � �
Q
®W
4d d
w Q it W W
a- W 0 O Z
a
4
THE PROPOSED STORMWATER MANAGEMENT PONDS ARE TO BE
Z CL O m d H
4
W 2 O W
W a" E- M
CONVERSION SHOULD BE COMPLETED AFTER THE ENTIRE DRAIN
d
Q d. Q
AREA IS STABILIZED AND APPROVAL GIVEN FOR THE LOCAL & STATE
rl
d
d
fr
THE CONVERSION TO A PERMANENT STORMWATER BMP SHALL BE
. d 4
ACCOMPLISHED BY INSTALLING THE PERM. OUTLET STRUCTURE AND
a d
a
INV ELEV
= 323.00
6'x 6'x 10" CONCRETE
-//
ANTI -FLOATATION BLOCK
ELEV =322.1
SIDE ELEVATION
PEAKED TRASH RACK WITH ANTI VORTEX PLATE
2:1 SLOPE, WITH =2'x 3' HINGED HATCH
ALIGN WITH STEPS INSIDE -
SECURE HATCH WITH CHAIN & LOCK
CONTRACTOR SHALL PROVIDE & INCLUDE
WITH SHOP DRAWING SUBMITTAL
PRECAST CONCRETE BOX
TINDALL UV 72" X 72" (INSIDE DIMS)
( CONTRACTOR SHALL PROVIDE &
INCLUDE WITH SHOP DRAWINGS)
LITTORAL SHELF (10:1)
SECTION JOINT, SECURE
WITH WATER TIGHT JOINTS
( FLEXIBLE JOINT SEALANT)
TYP. ASTM C990
24.0" W x 21.6" H
RECT. WEIR
INV ELEV = 331.3
(FRONT & REAR SIDES)
STEPS @ V-2" O/C
ALIGN W/ OPENING
i
U) ?O�
TYPICAL WETPOND CONVERSION NOTES
w z ®z = W w
ALL AREAS ABOVE THE PERMANENT POOL SHALL BE PREPARED &
SEEDED TO PERMANENT GROUND COVER SPECFICATIONS.
H U ca o- O O a
O -�' F- �
CD � O
O
-Co WR 1-ZCA
UO F-
THE PERMANENT WET DETENTION BASIN SHALL NOT BE
Z Q O Q Z z O
CONSTRUCTED UNTIL THE CONTRIBUTING DRAINAGE IS STABILIZED.
0 Z ® C- O Z n -
ANY SEDIMENT THAT ACCUMULATES WITHIN THE POND SHALL BE
Q I-- Z U) 0 Z ® � �
Q
®W
REMOVED AND THE FINAL GRADE REESTABLISHED TO THE
PROPOSED CONTOURS SHOWN.
w Q it W W
a- W 0 O Z
Cn Z
O z< o w W O m
THE PROPOSED STORMWATER MANAGEMENT PONDS ARE TO BE
Z CL O m d H
CONVERTED FROM SEDIMENT AND EROSION CONTROL BASINS. THIS
W 2 O W
W a" E- M
CONVERSION SHOULD BE COMPLETED AFTER THE ENTIRE DRAIN
AREA IS STABILIZED AND APPROVAL GIVEN FOR THE LOCAL & STATE
rl
AUTHORITY.
fr
THE CONVERSION TO A PERMANENT STORMWATER BMP SHALL BE
ACCOMPLISHED BY INSTALLING THE PERM. OUTLET STRUCTURE AND
REGRADING THE BASIN CONTOURS TO THOSE SHOWN ON THE PLAN.t
ANY SEDIMENT LADEN WATER WITHIN THE SEDIMENT BASIN SHALL
BE DRAWN DOWN BY USE OF PUMPS AND DISCHARGES THROUGH A
1
'BLADDER' TYPE SYSTEM OR DISPOSED OF OFFSITE IN AN APPROVED
r
u'
SYSTEM.
ul
ALL SEDIMENT REMOVED SHALL BE PLACED IN A DESIGNATED SPOIL
PILE AND ADEQUATELY PROTECTED WITH EROSION CONTROL
rr
MEASURES AND PERMANENTLY STABILIZED WITH PERMANENT
u,
SEEDING.
a_
a
Cr
CL
PEAKED TRASH RACK WITH ANTI VORTEX PLATE
2:1 SLOPE, WITH =2'x 3' HINGED HATCH
ALIGN WITH STEPS INSIDE -
SECURE HATCH WITH CHAIN & LOCK
CONTRACTOR SHALL PROVIDE & INCLUDE
WITH SHOP DRAWING SUBMITTAL
PRECAST CONCRETE BOX
TINDALL UV 72" X 72" (INSIDE DIMS)
( CONTRACTOR SHALL PROVIDE &
INCLUDE WITH SHOP DRAWINGS)
LITTORAL SHELF (10:1)
SECTION JOINT, SECURE
WITH WATER TIGHT JOINTS
( FLEXIBLE JOINT SEALANT)
TYP. ASTM C990
24.0" W x 21.6" H
RECT. WEIR
INV ELEV = 331.3
(FRONT & REAR SIDES)
STEPS @ V-2" O/C
ALIGN W/ OPENING
i
FRONT ELEVATION
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48" 0 RCPIN
a
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4 d d
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FRONT ELEVATION
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Engineer
UDM
Drawn By
9/30/14
Date
Revisions
12/01/14 OWNER REQUESTS
Project Number
574-002
Sheet 11 of 23
•
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Engineer
UDM
Drawn By
9/30/14
Date
Revisions
12/01/14 OWNER REQUESTS
Project Number
574-002
Sheet 11 of 23

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BOTANICAL NAME
WATER QUALITY POND PLANTING LAYOUT
WATER QUALITY POND PLANTING NOTES
5. WHERE NECESSARY, PIN PLANTS DOWN UTILIZING 12" BENT WIRE PINS.
Cn
1. THE LITTORAL ZONE & PROP. WETLANDS SHALL BE FINE GRADED & TOPSOIL
(SMITH & RICHARDSON Co., 1-800-426-0876) TO PREVENT FLOATING & AID IN
APPLIED & FINE GRADED BY THE LANDSCAPE CONTRACTOR. (OVERALL
ROOTING.
LO 0
6
GRADING BY THE SITE WORK CONTRACTOR).
10' LITTORAL SHELF
4M
0i 0i
M N 04
Cn
CF OSMUNDA CINNAMOMEA CINNAMON FERN #SP4 CG
1*
0
2. TOPSOIL SHALL BE NATIVE ON-SITE TOPSOIL REMOVED FROM THE WATER
LT SAURURUS CERNIJUS LIZARD TAIL 2" X 5" PLUG
THIS MAINTENANCE SHALL BE CONTINUOUS UNTIL POND HAS FILLED TO
NO/SD @ 5' OC
QUALITY POND AREA. LANDSCAPE CONTRACTOR SHALL COORDINATE WITH
PV PELTANDRA VIRGINICA TUCKAHOE, GREEN ARUM 2"X 5" PLUG
PERMANENT WATER LEVEL, POND "SYSTEM" HAS STABILIZED & PLANTS
PLANT AS SHOWN ABOVE
(ALTERNATE PLANTS)
THE G. C. TO INSURE THAT EXISTING TOPSOIL IS CAREFULLY REMOVED
CaF LOBELIA CARDINALIS CARDINAL FLOWER 2"X 5" PLUG
ESTABLISHED (ROOTED).
CaF @ 30"O.C.
WITHOUT INTERMIXING WITH CLAY SUBSOIL & PROPERLY STOCKPILED FOR
NO NYMPHEA ODORATA FRAGRANT WATER LILY #SP4 CG
C14
V_
(DOUBLE STAGGERED ROW) LT @ 24- O.C.
RE -USE.
SD NUPHAR LUTEA SPA17ERDOCK #SP4 CG
7. LANDSCAPE CONTRACTOR SHALL PROVIDE CONTINUOUS MAINTENANCE OF
(DOUBLE STAGGERED ROW)
NYMPHEA ODORATA
N
CF @ 30- O.C.
3. IT IS IMPORTANT THAT THE TOPSOIL BE RE -USED DUE TO THE EXISTING
NOTE: MOST AQUATIC PLANTS AVAILABLE FROM COASTAL PLAIN CONSERVATION NURSERY,
DEAD OR DYING PLANTS AS NECESSARY DURING THE ONE YEAR WARRANTY
(SINGLE ROW) MAIN POND
NATIVE "SEED BANK". PLACED TOPSOIL SHALL BE 9" TO 12" DEEP OVER ENTIRE
EDENTON, N.C. CONTACT: ELLEN TOLODNEY
PERIOD.
60 0 30 60 120 240 574-002
POND.
PHONE: [phone]. WEB SITE: www.coastalplainnursery.com.
EDGE OF SHELF
WATER DEPTH= 6"
4. TOPSOIL SHALL BE PLACED TO COVER EXISTING CLAY SUBSOIL IMMEDIATELY
(SUBSTITUTIONS SHALL BE APPROVED BY ENGINEER OF RECORD)
EDGE OF SHELF 0
UPON COMPLETION OF GRADING TO PREVENT SILTATION OF POND WATER.
1 QT. CONTAINER
I XTATIA 9 W1J FgAF C=z
0 tSUVt VtKM. VUUL
BOTANICAL NAME
COMMON NAME
ROOT/CONTAINER
5. WHERE NECESSARY, PIN PLANTS DOWN UTILIZING 12" BENT WIRE PINS.
Cn
10,
(SMITH & RICHARDSON Co., 1-800-426-0876) TO PREVENT FLOATING & AID IN
04
ROOTING.
10' LITTORAL SHELF
CF OSMUNDA CINNAMOMEA CINNAMON FERN #SP4 CG
LIZARD TAIL
NOR*
LT SAURURUS CERNIJUS LIZARD TAIL 2" X 5" PLUG
THIS MAINTENANCE SHALL BE CONTINUOUS UNTIL POND HAS FILLED TO
PELTANDRA VIRGINICA
TUCKAHOE, GREEN ARUM
PV PELTANDRA VIRGINICA TUCKAHOE, GREEN ARUM 2"X 5" PLUG
PERMANENT WATER LEVEL, POND "SYSTEM" HAS STABILIZED & PLANTS
CaF LOBELIA CARDINALIS CARDINAL FLOWER 2"X 5" PLUG
ESTABLISHED (ROOTED).
0
NO NYMPHEA ODORATA FRAGRANT WATER LILY #SP4 CG
LOBELIA CARDINALIS — — ---------
CARDINAL FLOWER
SD NUPHAR LUTEA SPA17ERDOCK #SP4 CG
7. LANDSCAPE CONTRACTOR SHALL PROVIDE CONTINUOUS MAINTENANCE OF
NYMPHEA ODORATA
FRAGRANT WATER LILY-
'BARE ROOT LINER
C4
NOTE: MOST AQUATIC PLANTS AVAILABLE FROM COASTAL PLAIN CONSERVATION NURSERY,
DEAD OR DYING PLANTS AS NECESSARY DURING THE ONE YEAR WARRANTY
0
0
EDENTON, N.C. CONTACT: ELLEN TOLODNEY
PERIOD.
60 0 30 60 120 240 574-002
PHONE: [phone]. WEB SITE: www.coastalplainnursery.com.
(SUBSTITUTIONS SHALL BE APPROVED BY ENGINEER OF RECORD)
NUPHAR LUTEA
SPATTERDOCK
1 QT. CONTAINER
IN FEET mBmgnz
t; u
OSMUNDA CINNAMOMEA
CINNAMON FERN
1 inch = 60 ft
Sheet 12 of 2-3
0-
2'
CL C/) I—
CTB
Engineer
iTE GDM
Drawn By
9/30/14
Date
Eyl
Revisions
0
0 1. 12/01/14 OWNERREQUESTS
0
I—
0 tSUVt VtKM. VUUL
�v
PV @ 24- O.C.
(SINGLE ROW)
5. WHERE NECESSARY, PIN PLANTS DOWN UTILIZING 12" BENT WIRE PINS.
Cn
10,
(SMITH & RICHARDSON Co., 1-800-426-0876) TO PREVENT FLOATING & AID IN
04
ROOTING.
10' LITTORAL SHELF
CF OSMUNDA CINNAMOMEA CINNAMON FERN #SP4 CG
6. ALL PLANTED AREAS SHALL BE KEPT MOIST & NOT ALLOWED TO DRY OUT.
u1i
LT SAURURUS CERNIJUS LIZARD TAIL 2" X 5" PLUG
THIS MAINTENANCE SHALL BE CONTINUOUS UNTIL POND HAS FILLED TO
z
PV PELTANDRA VIRGINICA TUCKAHOE, GREEN ARUM 2"X 5" PLUG
PERMANENT WATER LEVEL, POND "SYSTEM" HAS STABILIZED & PLANTS
CaF LOBELIA CARDINALIS CARDINAL FLOWER 2"X 5" PLUG
ESTABLISHED (ROOTED).
0
NO NYMPHEA ODORATA FRAGRANT WATER LILY #SP4 CG
SD NUPHAR LUTEA SPA17ERDOCK #SP4 CG
7. LANDSCAPE CONTRACTOR SHALL PROVIDE CONTINUOUS MAINTENANCE OF
MINIMUM OF 50 PLANTS PER 200 SF OF LITTORIAL SHELF TO BE PLANTED
ALL WETLAND PLANTINGS UNTIL ESTABLISHED (ROOTED), & SHALL REPLACE
GRAPHIC SC AT Project Number
C4
NOTE: MOST AQUATIC PLANTS AVAILABLE FROM COASTAL PLAIN CONSERVATION NURSERY,
DEAD OR DYING PLANTS AS NECESSARY DURING THE ONE YEAR WARRANTY
0
0
EDENTON, N.C. CONTACT: ELLEN TOLODNEY
PERIOD.
60 0 30 60 120 240 574-002
PHONE: [phone]. WEB SITE: www.coastalplainnursery.com.
(SUBSTITUTIONS SHALL BE APPROVED BY ENGINEER OF RECORD)
AIR&
It
IN FEET mBmgnz
t; u
1 inch = 60 ft
Sheet 12 of 2-3
0-