SW6190901_Plan (SCM Detail)_20200204

ASSEMBLY AND INSTALLATION
1. Glue on the 4" inlet extension to the tee on the inlet. Install the vent
2. Glue the 8' long 3" sch 40 barrel to the 3' coupling on the hose.
3. Put the other end of the barrel into the socket on the inlet extension and tighten the screws.
4. Cut the orifice inthe plug, put the plug in the inlet, and tighten the screw. Close the door.
5. Cut a trench in the bottom of the basin ]'to 2' deep under where the skimmer will be placed. If require, place a
support under the skimmer outlet.
6. Attach the 4" coupling on the hose to the outlet structure.
7. Attach the rope to the Tee and other other end to a stake on the side of the basin.
8. Put a fence post, 1 not 2, on the opposite side of the barrel from where the rope is tied to a stake to keep the
skimmer in place.
NOTE: Put the skimmer where you want it to settle to the bottom and rive a metal fence post into the ground on the
outside of the barrel (away from the side) 2' from the float to hold the skimmer in that place. MakL-- sure it is high
enough so the barrel does not float over the top when the basin fills. Posts on both sides of the barrel are not
recommended because it will prevent pulling the skimmer to the side for maintenance.
MAINTENANCE
• TRASH: If the inlet screen clogs and there is water in the basin, tugging on the rope several times will usually
wash the trash off and restore flow. If not, pull the inlet to the side of the basin and use a stick to clean the
screen. Open the screen door and remove any trash or sediment inside so grass or trees do not grow in the
inlet.
• SEDIMENT ACCUMULATION AROUND THE SKIMMER: A shallow, long basin, using baffles, and inflow in the basin
at the opposite end from the outlet help keep sediment away from the skimmer. If sediment restricts skimmer
movement, pull the skimmer to one side and excavate under it.
• ICE: Try to keep ice broken up at the inlet and around the barrel to keep water flowing, making sure it less likely
the inlet will freeze. Spray painting the float black to absorb heat is recommended. Use paint that will stick to
PVC.
• HANDLING THE SKIMMER: The skimmer is make of plastic and will withstand heat, cold and sunlight but it needs
to be handled by hand, not grabbed with a backhoe bucket and moved around, especially in cold weather.
To remove the skimmer, disconnect the hose first, then disconnect the barrel from the inlet connection. DO
NOT try to pull the skimmer loose with a backhoe.
• VANDALISM: Keep unauthorized persons that may do damage off the site. Do not provide rocks close to the
skimmer if possible. If possible, taking other considerations into account, position the skimmer out in the basin
away from the banks to decrease the potential for a successful hit.
Rope
3" SCH 40 solid pvc
Vent barrel or "arm" supplied
7r
by contractor
Inlet Door
4" inlet
extension
3" SCH 40 solid pvc
barrel or "arm" supplied
by contractor 3" hose
SKIMMER DETAIL
Reference: Manual for Designing, Installing and Maintaining
Skimmer Sediment Basins, February 2001, J.W. Faircloth & Son
Calculate Skimmer Size
Basin Volume in Cubic Feet 22,440Cu.Ft Skimmer Size 3.0 Inch
Days to Drain* 3.00 Days Orifice Radius 1.3 Inch[es]
_ Orifice Diameter 2.6 Inch[es]
*In NC assume 3 days to drain
SKIMMER CONNECTION DETAILS
Scale: Not to Scale
NOTES:
1. ALL ASPECTS OF BMP SHALL BE NON -CORROSIVE.
2. TRASH RACK OPENINGS SHALL NOT EXCEED 5.5".
TOP RISER-246.70'
250,.
_
((OF
PROVIDE 3 DIIMENSSIONALTE RISER
249'
TRASH RACK (SEE DETAIL)
248i
-
10247DRAWDOWN
3' OPENINGS
0 YR.-247.59246 _
ORIFICE
V : 175.00
1 YR.-247.12
TPE-245.75245
6 3: id OPENINGS
PPE-244.00244
----
N�•245.75
243
_ #57 STONE_
1' THICK UNDER
-
247
DRAWDOWN ORIFICE
24" RCP
as 0.30%
241,
240;
-" •S
''
CONCRETE
239
- ANTI -SEEP COLLAR
238
W CONRETE TO CREATE INSTALLED C-MIDPOINT
INVERT ® OUTLET ELEV.
237
SEDIMENT
STORAGE
236
235'
3000 PSI CONCRETE 6"PVC
12"MIN. 12"MIN. FOOTING 4.5'x4.5'x15" SCREW TYPE
RISER W1 ANTI -SEEP COLLAR PLUG
6"x6"TEE 6" PVC PIPE
4" I N V- 9 44- nn
15" �INSTALL #4 REBAR ON 4"
CENTER 6"CAP WITH 2"0
2" HOLE DRILLED FOR
4'x4' CONTROLED ORIFICE
ANTI -FLOTATION DEVICE DRAWDOWN ORIFICE
POND RISER DETAIL
Scale: NTS
POND INSET
SHALLOW WATER COMMUNITY Scale: = SHALLOW LAND COMMUNITY
SHALLOW LAND COMMUNITY (EL. 244.00 to 244.501)= 1577 S.F.
1 PLANT/4S.F. 24" O.C. = 394 PLANTS
PLANTTYPE
CITY
BOTANICALNAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
HERBACEOUS
123
Asclepias Incarnata
Swamp Milkweed
CONT.
4" Pot
24" O.C.
123
Helianthus Angustifolius
Swamp Sunflower
CONT.
4" Pot
24" O.C.
123
Hibiscus Coccineus
Scarlet Rosemallow
CONT.
4" Pot
24" O.C.
SHRUBS
8
Eubotrys Racemosa
Swamp Doghobble
CONT.
3 Gal.
1 18"-24"
24" O.C.
8
Hypericum Densiflorum
Bushy St. Johnswort
CONT.
3 Gal.
1 18"-24"
24" O.C.
9
Vaccinium Corymbosum
Highbush Blueberry
CONT.
3Gal.
1 18"-24"
124" O.C.
NOTE: ONLY HERBACEOUS SPECIES SHALL BE LOCATED ON FOREBAY BERM -
I f
SHALLOW WATER COMMUNITY (EL. 243.50' to 244.00 )= 1606 S.F. 1 PLANT/4S.F. 24" O.C. = 402 PLANTS
PLANTTYPE
CITY
BOTANICALNAME
COMMON NAME
ROOT
CALIPER
HEIGHT
NOTES
86
Iris Virginica
Virginia Iris
CONT.
4" Pot
24" O.C.
119
Equisetum Hyemale
Scoringrush Horsetail
CONT.
4" Pot
24" O.C.
HERBACEOUS
119
Hibiscus Moscheutos
Swamp Rosemallow
CONT.
4" Pot
24" O.C.
39
Physotegia Virginians
10bedient Plant
CONT.
1 4" Pot
1
24" O.C.
39
Symphyotrichum Oblongifolium
I Fragrant Aster
CONT.
1 4" Pot
1
124" O.C.
WETLAND PLANTING SCHEDULE
I VF'LL.-248.0
IUr kL. Li
2 (max)
2 Imax)
1
100 YR. STORM EL - 247.92
�1
3
1
-
TEMPORARY POOL EL. - 245.75
TEMPORARY POOL EL. - 245.75
8" TOSHELF
PERMANENT POOL EL, - 244.00
PERMANENT i P:i -9AAnQ
SHELF
6 WI
PSOATED
MIN.
DETaPSETATED
FOREBAY
PERMANENT
2
2
2
�1
POOL
1 2
N
� 1
SEDIMENT STORAGE EL: 240.00
w
N
BOTTOM EL.-239.5
N
LU
W
SEDIMENT STORAGE EL. 237.00
w
LL
Ed
_
LL
15" CLAY LINER
��
L
LU
m
w
"
BOTTOM EL.-236.00
LU
U)
but
on
i
15" CLAY LINE
w
apulla
w
>
O
O
m
m
t
4 wF.0,1 OR
i 1
- T ,- X 0 WEDGE R
ANCHOR h1T h YrNc NUT
�r
,v
L x . AIs,oRs BOLTED
AT _L4TTEO ONNCTO i Tn EACH
r
H CORNER)
' ? ._ i _...._...I... T4YQ HINGES WELLED
- - - OPEN
j i r TO PLATt TO E�v .O,
Ir ACCESS PATCH
' .m . WELDED. I'...,
r
0RA. S BENT
i
i
i PLATE
a _h_
Ld
i
u
a / SUPPORT PLATE
i
I
z I %
e
I
1
s
-1
i
,I
k
if
I
I
a
4• I
i
F
I
°I
I (f
TOP ',rlc 4"d
-' 12 Vill) I -�
2--BAR SUPPOR1
BARS BENT AT CENTER --� �- 6"X 1/2" PLATE BENT TO
WELDED 70 TRASH RACK ANGLE.
PLATE �� it $Aft / BARS 'v+di, 10 PLATE�.
TRASH
3"x 3/1 RACK �
SUPPORT
PLATE-. \ +
-
4
I r
E���,.I,�fv ..Est
RA C '_ Q A11:_.
- I `
This document p-o:ides general installation guidelines for the Armorivaril anchored reinforced vegetation system used in
non-structural applications including levaes, stream and river banks, a nd storm v;ater channels.These nor structural
applications are SPc-IIY designed using iYG" 2 earth
Percuo anchors. For instalaton gUidelip, frith ArmorUaz^ add
Type lA and/or 1 B earth percussion anchors used n stuctural apgi lations, please contact Propex.
Site Preparation / Prepare rade
P
Grade and con (cl tea I o -
„ a dr cl_d are a �e . F
I e nm by . g ne r Sahgrade shal on uniform and smonfh. f2 -nae afI rocks, clods, vegataUon or
other o6mrLs so le I I d not -'Mil "cle direct .on a t I.:.I ,oil Su a..e
repair seadSed by noseirlig the mp 7 3 in :50 °E ii ri act.
It Is sagga„ell that a ru l ratio conducted p: ensure s ll errubby.
Ineu as a ar tc oT2nr -,x lit P e ai,oa-. tca6orvl hesall t honored,
/ 1
• no not In • ae ten a e .• nere a[ is to be la d
r
Foraddino t nal factors of sorely also s ro n .o _y�tam Installation.
Consult proiect plans and/or speel5caaons f,.r seed types and arrepailon rates,
Levee Installation
retail lmii ier of oR t k Sian and Pratecool
o Side c t.h .. me runtrurto Figuru In
Unroll :AEI A the
e let e and across the cons".
= Install pins and earth ergo r brilliant
Sol has t1n (r�CL n �3tr I , 7 r and F , �. tie -a r iwcz s.fo.an .n : iec e or as designed in pr"irct
s cfle lions -ro dre m G / FI ae s reas rro eon a iar msh aBen pit eh aef S IGO,'C
in, Long tudinal Edge Trend on. the first and is,. of of t.r ­iact -,,it, a rler, 4,
For Jesse slopes longer than ac it 03.7 n install rtornl .d -n-k slits refer to Figure 5.
Note: d I seam everlaPs ..hall be a minimum of 5 in (150min). For end of rill overlaps see detail Is Figure 7.
I RO CT D SIDE
11f
LEVEE CROSS-SECTION
OVERVIEW OF LEVEE
XI THE ADVANTAC,F. CREATORS'
GEOSYN T HETICS
POND CROSS SECTION
Scale: Not to Scale
� z tea, ; ,' a ✓� �,,.
t
f
c i
I -I
Figure 4 - INITIAL TRENCH DETAIL
k•
1 /
wsslcuw '
4
r PATTERN DETAIL
Fi u e 5 PIN AND ANCHOR
gr . I r 1l rr.oza;.o )s)laoa, a el-as",Imr,ra tt el.s.,r',rsit
^��da)s.at l�ar.laeasas
ei
1
it
I i
I I^s alto oa ! I TR+,
R vemo.,al
9
i,E
V V
Tyr_ ?
annnor rT,y
Flours 6 - EARTH PERCUSSION ANCHOR INSTALLATION
WEIR ARMORING DETAIL
ca e:
Figure 7 - LONGITUDINAL EDGE TRENC''.
Figure 9 - TERMINAL TRENCH
®I
1 I©!
I'
= it
"
I
o a e ® �
,
I *rm rt
Figure R - MODIFIED CHECK SLOT ANCHORS
C� l
I i
...-_.. - f
OV lA-1-EDCE. FL PJ. WirFaEDEOGE
�hI('TRt,'
' EAR .. ­CHOR
Lin. _
'no "" (1 r) (T")
HPTRIv1 END pF ROLL OVERLAP IOINT
Figure 10 - END OF ROLL OVERLAP DETAIL
, a-,c.
enou
P o�dp EX I THE ADVAh'TICE CP.EAICRS:"
kEEEiIIt ti 1. , 0 ✓. S5, . 4 S11
GEOSYI 1THETICS
NOTIFY DENNIS MILLER & JEFF RIDDLE OF THE
CITY OF FAYETTEVILLE AT 910-433-1661
BETWEEN 8:00 AND 9:00 am, MON.-FRI., TO
SCHEDULE AN ON -SITE PRE -CONSTRUCTION
MEETING. THE PRE -CONSTRUCTION MEETING
SHALL BE SCHEDULED A MINIMUM OF 48 HOURS
IN ADVANCE. THE INSPECTOR SHALL ALSO BE
CONTACTED A MINIMUM OF 48 HOURS IN
ADVANCE TO SCHEDULE STORMWATER AND
STREET INSPECTIONS. FAILURE TO CALL FOR
INSPECTIONS WILL RESULT IN WITHHOLDING OF
THE PERFORMANCE SECURITY AND/OR DENIAL
OF STREET ACCEPTANCE.
SKIMMER SEDIMENT BASIN (Practice 6.64)
CONSTRUCTION SPECIFICATION
1. Clear, grub, and strip the area under the embankment of all vegetation and root mat. Remove all surfClce soil containing high amounts of organic matter and stockpile or
dispose of it properly. Haul all objectionable material to the designated disposal area. Place temporary sediment control measures below basin as needed.
2. Ensure that fill material for the embankment is free of roots, woody vegetation, organic matter, and other objectionable material. Place the fill in lifts not to exceed 6 inches to
allow for settlement.
3. Shape the basin to the specified dimensions. Prevent the skimming device from settling into the mud by excovatins a shallow pit under the skimmer or providing a low support
under e nder the skimmer of stone or timber.
4. Place the barrel (typically 4-inch Shedule 40 PVC pips a firm, smooth foundation of impervious soil. Dq not use pervious material such as sand, gravel, or crushed stone as
ackfill round the pipe. Place the fill material around the pipe spillway in 4-inch layers and compact it n b a c act u t
PP PP P Y Y P `tier and around the pipe to a least the same density as the adjacent
P P tY 1
embankment. Caremust be taken not to raise the pipe from the firm contact with its foundation when compacting under the pipe haunches.
Place a minimum depth of 2 feet of compacted backfill over the pipe spillway before crossing it withconstruction equipment. In no case should the pipe conduit be installed by
cuttinga trench through the dam after the embankment is complete.
P
5. Assemble the skimmer followingthe monuffacturers instructions or as designed.
9
6. the assembled skimmer on the bottom of the basin with the flexible joint at the inlet of the barrel pipe. t t barrel n position t skimmer
ay � p p Attache The flexible joint to he bare pipe and posl o he me
over the excavated pipe or support. Be sure to attach a rope to the skimmer and anchor it to the side of the basin. This will be used to pull the skimmer to the side for
maintenance.
7. Earthen spillways - Install the spillway in undisturbed soil to the greatest extent possible. The achievment of planned elevations, grade, design width, and entrance and exit
channel slopes are critical to the successful operation of the spillway. The spillway should be lined with laminated plastic or impermeable geotextiie fabric. The fabric must be
wide an long enough to cover the bottow and sides and extend onto the to of the dam for anchoringi t t w' _i I in T d d o en a tench. he edges may be secured with 8 nch staples or s. he
9 9 P P 9 Y P
fabric must be Ion enough to extend down the slope and exit onto stable round. The width of the fabric must n i not ins spliced; otherwise water can t
c ro s be one ace, o joined or s cad o se e c e
9 9 P 9 P P 9 1
under the fabric. If the length of the fabric is insufficient for the entire length of the spillway, multiple sections, s the wi th a ed Th u r section(s)
s u ns spanning e d m be us e e s
9 g P Y. P a P 9Y PP I
c
I overlap the low r section(s) so that r ann t flow under the tic re the r should o h ., s s a e c o to u de e fabric. Secure e upper edge and sides of the fabric in a trench with staples or ins.
P () PP 9 p P
8. Intlets - Discharge water into the basin in a manner to prevent erosion. Use temporary slope drains or diversions with outlet protection to divert sediment -laden water to the
upper end of the pool are to improve basin trap efficiency.
9. Erosion Control - Construct the structure so that the disturbed are is minimized. Divert surface water away from bare areas. Complete the embankment before the area is
cleared. Stabilize the emergency spillway embankment and all other disturbed areas above the crest oft immediately r
9 Y P Y
he principal spillway mmedla el opts construction.
P P P Y Y
10. Install porous baffles as specified in Practice 6.65, Porous Baffles.
11, After all the sediment -producing areas have been permanently stabilized, remove the siructre and all the unstable sediment. Smooth the area to blend with the adjoining areas
and stabilize properly.
MAINENTANCE
Inspect skimmer sediment basins at least weekly and after each significant (one-half inch orgreater) rainfall event and repair immediately. Remove sediment and restore the basin
to its original dimensions when sediment accumulates to one-half the height of the first baffle. Pull the skimmer to one side so that the sediment underneath it can be excavated.
Excavate the sediment from the entire basin not just around the skimmer r the first ell. make sure vegetation
pia e e e ) s d o c ak u e age atlon growing in the bottom of the bottom does not hold down the
skimmer.
Repair the baffles if they are damaged. Re -anchor the baffles if water is flowing underneath or around them.
If the skimmer is clogged with trash and there is water in the basin, usually jerking the rope will make the skimmer bob up and down and dislodge the debris and restore flow. If this
does not work, pull the skimmer over to the side of the basin and remove the debris. Also check the orifice inside the skimmer to see if it is clogged; if so remove the debris.
If the skimmer are or barrel pipe is clogged, the orifice can be removed and the obstruction cleared with a plumber's snake or by flushing with water. Be sure and replace the orifice
before repositioning the skimmer.
Check the fabric lined spillway for damage Ono make any required repairs with fabric that spans the full width of the spillway. Check the embankment, spillways, and outlet for
erosion damage, and inspect the embankment for piping the settlement. make all necessary repairs immediately. Remove all trash and other debris from the skimmer and pool
areas.
Freezing weather can result in ice forming in the basin. some special precautions should be taken in thewinter to prevent the skimmer from plugging with ice.
111- moo
s
C
v�
o�
O O
00
N
00
V
V
- 00
y
ry C_ C)
V
Q
�i
C_ i O
0 00
oe �Z� �.
C
- 00
�C
X O >
_N
� O E
L
m }
co i..L
Q
0 U
a
cM
a LL cL Z
a
r� FE�s O
SEAL
031459 c
4
A
q
z
U
U
w
w
0
f~
0
H
°m
°w
0
a,
0
a
w
w
C
o
o
0
co
w
w
a�
(D
�
x
WW
o
�
v
0
N
O
6
Z
^
N
Owner:
JOSEPH E
RIDDLE, III
ESCROW
TRUST
CONTACT.-
4200 MORGANTON ROAD
SUITE 150
FAYE 7-TE VILLE, NC 28314
[phone]
Project:
HOKE
LANDING
PHASE 2
tax id #' 49445-00-01-002
49445-00-01430
49445-00-01-431
445- 49 00-01-432
township: Raeford
county: Hoke
state: North Carolina
STORMWATER
BMP
DETAILS
CONSTRUCTION
DOCUMENTS
'_
: . no job
1 P19 014
date: 11 /04/19
drawn by: JN
survey by:
checked by: JN
sheet no.:
C-06