SW4210501_Plansheet - SCM Detail_20210714

CONSTRUCTION SEQUENCE
FOR WET DETENTION POND:
1. INSTALL EROSION CONTROLS.
2. CONSTRUCT DAM BASE AND AREAS BELOW THE
NORMAL POOL. CONSTRUCTION TO BE PERFORMED
UNDER THE INSPECTION OF THE GEOTECHNICAL
ENGINEER. SEED UPON COMPLETION,
3. INSTALL OUTLET PIPE, RIP -RAP APRON AND
STONE FILTER RING.
4. CONSTRUCT OUTLET STRUCTURE,
5, REMOVE ACCUMULATED SEDIMENT AND
SEED UPON COMPLETION.
15" HOPE WITH WATER TIGHT SEAL
PIPE TO BE BEDDED
PER DIRECTION OF GEOTECHNICAL
ENGINEER 2
3' MIN
APPROXIMATE SIZE
EXCAVATE AND BACKFILL
WITH COMPACTED
STRUCTURAL FILL AS
DIRECTED BY GEOTECHNICAL
ENGINEER
22'1 HOPE 0 2,27%
SILT FENCE AS NEEDED
4' MIN
EMBANKMENT WIDTH
6' TOPSOIL FOR AL
AREAS ABOVE TH
NORMAL POND LLEVATIO
0
TRASH RACK
REFER TO DETAIL
THIS SHEET
6' TOPSOIL ABOVE
61 CLAY LINER
! '- ON LITTORAL SHELF
6' CLAY SOIL
LINER ON INSIDE
I I 3
FACE OF
EMBANKMENT
`1
6FT LITTORAL I I 1
INV=657.0
/ 1 ELEV=655.0 ----�
1
4` MIN' ASTM C-923 SEAL
KEY BETWEEN BARREL A RISER.
RISER BASE TO BE FILLED
WITH CONC, TO INVERT OF
BARREL.
8"XrX1'X12" LONG ANGLE (6 TOT. REQUIRED) TO ANCHOR RISER TO
BASE, PROVIDE 2-3/4" A347 BOLTS FROM ANGLE TO RISER AND T
2-A307 -J' HOOKS 3/4- DIA. X 12" LONG FROM ANGLE TO BASE,
ANGLE TO BE FIELD COATED WITH ZINC RICH PAINT AFTER
CONSTRUCTION. 'J' HOOKS TO BE PLACED UNDER LOWER REINFORCING
STEEL.
FILTER MEDIA (SEE NOTE 2)
FLQw - 1_ I I irk f
PRIOR TO INSTALLATION, MANUFACTURER SPECIFICATIONS OF FILTER MEDIA SHALL BE REVIEWED TO ENSURE THAT DISCHARGE FROM
FILTER MEDIA SHALT. MEET OR EXCEED THE PROYISIONS OF THE CLEAN WATER ACT,
ENSURE THAT PUMP PRESSURE DOES NOT EXCEED FILTER MEDIA PRESSURE RATING.
FILTER MEDIA MAY BE, Mg NOT LIMITED 10, SAND MEDIA FILTRATION DEVICES, RATED FILTER FABRIC
BAGS OR POLYMER BASED DEWATERING PRACTICES,
PUMP STRAINER SHALL NOT BE IN CONTACT WITH BOTTOM OF POND.
BMP POND DEWATERING
SEEDBED PREPARATION:
1. CHISEL COMPACTED AREAS AND SPREAD TOPSOIL THREE INCHES DEEP OVER ADVERSE SOIL CONDITIONS, IF AVAILABLE.
2. RIP THE ENTIRE AREA TO SX INCHES DEEP.
J. REMOVE ALL LOOSE ROCK, R0015 AND OTHER OBSTRUCTIONS, LEAVING SURFACE REASONABLY.5MOOTR AND UNIFORM.
4. APPLY AGRICULTURAL UWE. FERTILIZER, AND SUPERPHOSPHATE UNIFORMLY AND MIX WITH SOIL (SEE SEEDING MIXTURE).
5. CONTINUE TILLAGE UNTIL A WELL -PULVERIZED, FIRM, REASONABLY UNIFORM SEEDBED IS PREPARED FOUR TO SIX INCHES DEEP.
6. SEED ON A FRESHLY PREPARED SEEDBED AND COVER SEED LIGHTLY WITH SEEDING EQUIPMENT OR CULTIPACK AFTER SEEDING.
7. MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH.
8. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY RLPAIRS OR RE-SEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLE. IF
STAND SHOULD BE MORE THAN I DAMAGED, RE-ESTABLISH FOLLOWING THE ORIGINAL LIME, FERTILIZER AND SEEDING RATES.
9. CONSULT S&EC ENVIRONMENTAL ENGINEERS ON MAINTENANCE TREATMENT AND FERTILIZATION AFTER PERMANENT COVER IS
ESTABLISHED. .
LANDSCAPE NOTES:
ALL LANDSCAPING SHALL BE IN UUMPLIANCE WITH THE NCDEQ 3%AP REOUI!?U ITS -
LANDSCAPE CONTRACTOR SHALL PROVIDE A 1'6U-YEAR IVARRANIY FCR EMP PLANTING SURVIVAL/REPLACEMENT.
AT THE END OF T6E FIRST YEAR AND AT IHE 6ND OF THE TWO-YEAR I PERIOD, ALL PLANTS THAT DO NOT SURVIVE MUST BE
REPLACED.
ESTABLISHMENT PRCCEWRES, SUCH AS CONTROL 4F INVASIVE 1'MES. ANIMAL AND',MDAL DAMAGE, MULCHING, RE-STAK.INC, WATERING, AND
MESH OR TUBE PROTECTION REPLACEMENT, SFV+LL BE IMPLEMENTED TO THE EXTEND NEEDED TO INSURE PLANT SURVIVAL STAKING MUST BE
RE,MUVED AFTER ESTABLISHMENT (APPROXIMATELY 12 MDyTHS), TO PREVENT GIRDLING (STRANGLING} OF ALL W60UY PLANTS,
SOD WITHIN BMP AND SURROUNOINC AREAS TO BE BERMUDA DR CENTIPEDE GRASS.
GRASS OR WILDFLOWER SEED musr BE APPLIED AT THE RATES SPECIFIED BY THE SUPPOERS, IF PLANT ESTAE'LISHMENT CANNOT BE ACHIEVED
WITH SEECING BY THE TIME OF SUBSTANTIAL COMPLETION OF THE STGRMWATER FACILITY PORT€QNI OF THE PRDJLCT, THEN THE CONTRACTOR
SHALL PLANT THE AREA WITH WILDFLOWER SOD, PLUGS, CONTAINER PIANTS, OR OTHER MFAKJS TQ COMPLETE THE SPECIFIED PLANTING AND
PROTECT AGAINST EROSION BEFORE 'WATER IS ALLOWED T4 ENTER THE STORMWATER BMP FACILITY.
ALL MATERIALS SHALL BE ACOUIR-D FROM AN APPROI'EO NCDEQ PLANT VEINDOI, PLANT VMTER;AL SHOULD BE PURCHASED FRCM A LDI
SOURCE TO ENSURE SURVIVABILITY. LOCAL VENDORS FOR THIS SITE INCLUDE:
Cli 'DE NATIVE PLANT NURSERY 3T3 662-5568
CROWING WILD NURSERY 916-259-6351
NC FOREST SERVICE 919-73I-7988
- PLANT DELIGHTS NURSERY 919-772 4791
- TARHEEL NATIVE TREES 919-553-5927
IMMEDIATELY AFTER THE WET DETENTION BASIN IS ESTABLISHED, III ;E PLANTS Oil THE VEGETATED) SHELF AND PERIMETER OF THE BASIN SHOULO
BE WATERED TWICE WEEKLY IF NEEDED UNTIL THE PLANTS BECOME ESTABLISHED (COMMONLY SIX WEEKS)
NO PORTION OF THE WET DETENTION POND SHOULD RE FERTILIZED AFTER THE FIRST INITIAL FERTILIZATION THAT IS REQUIRED TO ESTABLISH
THE PLANTS DN THE VEGETATED SHELF.
LANDSCAPING NOTES:
1. CONTRACTOR SHALL COMPLY WITH ALL APPLICABLE CODES AND ORDINANCES REGARDING LANDSCAPING.
2. IT IS THE RESPONVII11TY OF THE CONTRACTOR TO ESTABLISH A HEALTHY STAND OF GRASS ON ALL SEEDED AREAS.
3. CONTRACTOR SHALL PROVIDE NATURAL TOPSOIL THAT IS FERTILE, FRIABLE, WITHOUT MIXTURE OF SUBSOIL MATERIALS, AND
oDTNNED FROM A WELL DRAINED, AVAILABLE SITE. IT SHALL NOT CONTAIN SUBSTANCES WHICH MAY BE HARMFUL TO PLANT
GROWTH. TOPSOIL SHALL BE SCREENED AND FREE FROM CLAY, LUMPS, STONES, ROOTS, PLANTS, OR SIMILAR SUMANCES 1'
OR MORE IN DIAMETER, DEBRIS, OR OTHER OBJECTS WHICH MIGHT BE A HINDFRANCE TO PLANTING OPERATIONS. TOPSOIL
SHALL CONTAIN AT LEAST 4-11% ORGANIC MATTER BY WEIGHT AND HAVE A PH RANGE OF 5.5 TO 7.0.
4. CONTRACTOR SHALL BE RESPONSIBLE FOR THE WATERING AND THE MAINTENANCE OF ALL LANDSCAPED AREAS UNTIL THE LATER
OF; (a) TRIRTY (30) DAYS FOLLOWING THE PLANTING OF THE GRASS AND SHRUBS, OR (b) THE DATE THAT STORE OPENS FOR
BUSINESS TO THE PUBLIC. CONTRACTOR SHALL ALSO BE RESPONSIBILITY FOR THE SURVIVAL OF THE BMP PLANITNG MATERIALS
DURING THE TWO-YEAR WARRANTY PERIOD AND SHALL REPLACE ALL PLANTS THAT OO NOT SURVIVE AT THE END OF THE FIRST
YEAR AND AT THE END OF THE SECOND YEAR OF THE WARRANTY PERIOD.
5. CONTRACTOR 10 VERIFY QUANTITIES PRIOR TO COMMENCING WORK.
6. ANY DISTURBED AREAS NOT SCHEDULED FOR HARDSCAPI:, PLANTINGS, OR MULCH SHALL BE SEEDED LAWN. REFER TO SITE PLAN
FOR LOCATION OF AREAS TO I3E SUDDED.
7. NO PLANT SUBSTITUTIONS ARE PERMITTED WITHOUT WRITTEN APPROVAL OF THE OWNERS REPRESENTATIVE.
8. FOR NEW PLANTING AREAS, REMOVE ALL PAVEMENT, GRAVEL SUB -BASE AND CONSTRUCTION DEBRIS; REMOVE COMPACTED 501L
AND ADD 18" NEW TOPSOIL, OR TILL AND AMEND THE TOP IS" OF EXISIING SOIL TO MEET TOPSOIL/PLANTING MIX STANDARDS
FOR TREES,
1 ADJUST TREE PLANTING LOCATIONS TO AVOID UNDERGROUND UTILITIES, PLANT 15' FROM ALL UNDERGROUND UTILITIES (SEWER
AND STORM DRAINAGE, GAS„ WATER, PHONE, AND ELECTRICAL LINES.)
STGRMWATER MANAGEMENT SYSTEM DETAILS
i NOT
TO SCALE
LOW POINT
•,A'• :';,a:: ; '! ; :fly
•�� III
•A
L f ,.0 . , 1
LEVEL
TOP OF EMBANKMENT ELEVATION=659.5
NOTE: 1.0' STORM ELEVATION IS 657.36 AND INTERMEDIATE
]NECESSARY)
ETAIL WEIR IS ELEVATION 658.6. THERE IS ADDITIONAL STORAGE
ENTAL 100 YEAR STORM ELEVATION=659 29 DESIGNED FROM THE 1.0" STORM ELEVATION TO THE
INTERMEDIATE WEIR ELEVATION.
ST
RISER
EPS 2 YEAR STORM ELEVATION=658.67
ARY) N f YEAR STORK! ELEYATION=658.61
1.0-ENCH STORM ELEVATION=657.36 EXISTING GRADE=657.5d:
NORMAL POND ELEVATION=657.0
ELBOW
DETAIL
2 NOTE: PUMPS SHALL BE USED TO DRAIN
1 THE POND WHEN NECESSARY, REFER TO DETAIL
THIS SHEET FOR DEWATERING REQUIREMENTS.
Mi-
I jI -If_ _ BOTTOM OF POND (TOP OF SEDIMENT STORAGE)=651,0
`- CONCRETE SHALL BE ICI j I f
PLACED IN RISER AFTER
ANGLES ARE SECURED III�(BOTTOM OF SEDIMENT STORAGE)=650.0�I`
TO BASE AND RISER, �`� -� I , � 'I Ij
6" CLAY SOIL
5 x5'x1.5' CONC. RASE REINFORCE WITH J4 BARS AT 12" O.C. TOP LINER
AND BOTTOM OF EACH DIRECTION PROVIDE 3' MIN. CLEARANCE MAIN Pfirn
BETWEEN EDGE OF CONE. AND STEEL REINFORCING.
PROFILE OF WET POND DETENTION SYSTEM
SiN.T.S.
RISE
rpp r9F �7R � �9 p
�rorE��
�1 rF WF�R
�6
2
1�
r� "" T4UCTURE NOT SHOWN FOR CLARITY
TRASH RACK)
OUTLET CONTROL STRUCTURE - INCREMENTAL WEIR
SCALE: N.T,S.
6" TOPSOIL FOR ALL
AREAS ABOVE THE
NORMAL POND ELEVATION
FOREBAY BERM
6' TOPSOIL ABOVE
. 6" CLAY LINER 3:1
ON LITTORAL SHELF
i-
6FT LITSHELF 6:1
NOTES:
I. SEE DESIGN PLANS FOR SPECIFIED DIMENSIONS OF RISER.
2, TRASH RACK DIMENSION CRITERIA SPECIFIED IS APPROXIMATE AND VARIES BY MANUFACTURER.
3. INSTALLATION OF TRASH RACK SHALL BE ACCORDING TO MANUFACTURER'S RECOMMENDATIONS.
4. ALL COMPONENTS OF TRASH RACK SHALL BE OF STAINLESS STEEL OR OTHER NON -CORROSIVE MATERIAL.
5. ALL MOUNTING HARDWARE SHALL BE OF STAINLESS STEEL OR OTHER NON -CORROSIVE MATERIAL
TRASH RACK
ION CORROSIVE MATERIAL
0 5.5" SPACING /� \\ 5.5"
5.5"
1
I I I 5.5"
I I
ND E: RISER
TRASH RACK SHALL BE INSPECTED
PERIODICALLY AND ANY DEBRIS ON
THE TRASH RACK IS TO BE REMOVED
AND PROPERLY DISPOSED OF.
TRASH RACK DETAIL
` _OV
1
659 -»-
•
--
:i... F,: � • v .. RIP -RAN APRON
s: �r 65
AREA
N�
T
FOREBAY WEIR
Cfy+
C q
a
/
Qr�OaaU
�
aTOP
r9 o ° �' i
OF
EMBANKMENT
o as oC
LA
a[I rn 2
ELEV-6S9.5
SOD AREAS ABOVE
o
NORMAL POOL
of p Lc)!I a Up
ELEVATION
ITTORAL SHELF
/
0 a�1 D CO�
� a
AREA=1,120 SF REFER TO
DETAIL .FOR PLANTINGS
662
a
1
/
G a^^,0 0
-
/
0 0 0 ?
UTLET CONTROL
/
/
a v� 0 f
0 0 0 0 fI
STRUCTURE REFER TO
DETAILS
/ r
o
0 0 O C) 0
0 )00400 t]
THIS SHEET
/
r,
MAIN PON-------
0U / / AREA
Z _,-----
�1��
15"
OUTLET PIPE - - �� ou OU-,
_ REFER TO GRADING--
`�`'-�
oU"� - 011 ~`
PLAN -_-_�
- oU--,
GRAPHIC SCALE
20 0 10 20 40
60 .
PLAN VIEW
1 INCH = 20 FEET
7.0' GRASS FOREBAY
WEIR AT ELEV=656.5
FOREBAY TOP ELEV= 658.2
WIDTH AT TOP = 2.3 FT
i
I
rl
uic�a crarrrTnar
4' PVC SCREW CAP
FOR CLEANING ACCESS
I
I
12' MIN.
4"X4' PVC I
PERM POND ELEV.=657.0.
I
II
12" MIN.
II
II
I
0,75"DIA. HOLE DRILLED
I INTO BOTTOM CAP
PVC DRAIN OUTLET
NOTE: PUMPS SHALL BE USED TO DRAIN
SEDIMENT STORAGE TOP THE FOREBAY WHEN NECESSARY. REFER TO DETAIL
FORESAY BOTTOM THIS SHEET FOR DEWATERING REQUIREMENTS.
ELEV=654.0 3�
NORMAL POND ELEVATION
BOTTOM LITTORAL SHELF ELEV.
�� I' 6" TOPSOIL FOR ALL
FOREBAY ENTRANCE SHALL BE J�I I I I I DEEPER THAN FOREBAY EXIT AREAS ABOVE THENORMAL POND ELEVATION
OTTOM OF SEDIMENT
STORAGE/EXIT BOTTOM OF SEDIMENT
LL£V=653.5 STORAGE/ENTRANCE
ELEV=653.0
Ff), EBAY ENTRANCE SHALL BE FOREBAY
p�EPER THAN FOREBAY EXIT
II I
SHALLf]}+I LAN„ ZONE
HERBACEOUS TANTS SHALLOW WATER ZONE
HERBACEOUS PLANTS
POND
"' (NORMAL POOL)
1qSHIL
TYPICAL LITTORALF II EGETATION DETAIL
SCALE: .T.S,
SCIENTIFIC NAME COMMON NAME PLANTING ZONE QUANTITY NURSERY CONTAINER TYPE SPACING PLANTING SEASON
Jarl effusus Soft Rush SHALLOW WATER 4I PEAT POT
6' O.C. SPRING/SUMMER
Iris virgfelca Blue Flag Iris SHALLOW WATER 4
PEAT POT 6' D,[', SPRING/SUMMER
Schoonoplectlfs tabernaemonlanl Soft Stem Bulrush SHALLOW WATER PEAT POT 6' O.C. SPRING/SUMMER
Eupafortadelphus maculalua Spotted TruTnpelweod SHALLOW LAND 4 PEAT POT 6' O.C. SPRING/SUMMER
Eupotortum purpureum Joe-Pye Weed SHALLOW LAND 41 j FEAT POT
6' O.C. SPRING/SUMMER
Rhynchospora coloraia Sfarrush Whitatop SHALLOW LAND 4PEAT POT 6' O.C. SPRING/SUMMER
TYPICAL LITTORAL HELF PLANTING SCHEDULE
1.1,
STAGE STORAGE TABLE
o
STAGE ELEVATION CONTOUR INCREMENTAL TOTAL I
(F7) (FT) AREA (SF) STORAGE (CF) STORAGE (CF) \1
I
STORMWATER MANAGEMENT NOTES:
0.0
657.0 2675
0
0
0.5
657.5 3407
1521
1521
I. THE DEVELOPER OR HIS AGENT SHALL CONTACT THE DESIGN ENGINEER WHEN THE
1.0
658.0 3844 .
1813
3333 (WQv)
8£ST MANAGEMENF PRACTICES) ARE CONSTRUCTED AND A.6'OUI IO BECOME
1.2
658.2 4069
791
4125
OPERATIONAL SO A FINAL INSPECTION CAN BE PERFORMED TO DETERMINE
1.5
658.5 4387
1268
5393
COMPLIANCE WITH FHE APPROVED PLAN CAN 5E PERFORMED.
2.0
659.0 4821
2302
7695
2. ANNUAL MAINTENANCE INSPECTION AND REPORT RE{TUIRFD - THE 06VNER OF A
2.5
659.5 5270
2523
10218
PERMITTED STRUCTURAL STGRMWATER SUP/CONTROL SHALL ANNUALLY SUBMIT A
MAINTENANCE AND WSPECHON REPORT FOR EACH BMP TO THE 5TORMWATER
ADMINISTRATOR. ANNUAL INSPECTIONS SHALL 6ECIN WITHIN ONE YEAR 017 T11E
I
OPERATION $( MAINTENANCE
RECORDATfON OF ANY DEEDS) SNOWING STGRMWATER BMPs/CONTROL
STRucrITR£s.
BMP
element
Poierff rohfem:
How I wilt ramadiate the mblem
I
3. UPON COMPLETION OF THE PR0JEC1; AND BEFORE A CERTIFICATE OF OCCUPANCY
The
9�
ire BMP
Trash/debrls is present
Remove the irash/debris
SHALL 8£ GRANTED, THE ENGINEER OF RECORD SHALL CERTIFY THAT THE
The
nma o the yet
Areas of bare soil and/or
Regmds the soil if necessary to
COMPLETED PR4JEC7 IS IN ACCORDANCE WITH THE APPROVED STGRMWATER
etenH
a basin
erasure gullies
g es have formed
remove the gully, and than plant
MANAGEMENT PLANS AND DESIGNS.
a ground toyer and water uldfl It
It astabRshed. Provide Itme and
4. A FINAL INSPECTION OF THE SITE AND STGRMWATER MANAGEMENT SMP/CONTR(iL5
a one-ilme farNRxar applIasllon
TO 8E SCHEDULED V11TH AND COMPLETED EY THE PROJECT ENGINEER.
eg an s o s or as
long
of a n veg ion a e g
of appwa%lmately 1 inches.
5. NCDEQ AND THEIR ASSIGNS 14AVF RIGHT TO ACCESS THE STGRMWATER
o I
ota
or
75 pipe Is a agge ..
ne og the pi 0131 o e
sediment olf-sNe.
CONTROL(s) FOR INSPECTIONS OR MAINTENANCE AS NECESSARY, j
The pips Is crocked or
Replace the pipe,
otherwise dolma ed
•
fi. THE ENGINEER'S CERTIFICATION OF COMPLETION WILL RE REQUIRED PRIOR TO THE
Erosion is ocauning In the
Ragrode th5wal
e a 1 necessary
I,
FINAL PLAT OR CERTIFICATE OF OCCUPANCY, THE STOR,MWATfR CONTROL JS TO
swala.
io smooth H over and provide
erosion canlrol davlces gush as
BE INSPECTED TO ENSURE IT iS FUNCTIONING AS DESICNED AND RAS FULL
reinforced Turf malting or rlprap
DESIGN VOLUME PRIOR TG 11 OF THE FINAL CERTIFICATE OF OCCUPANCY,
io avoid future problems whh
eraslon.
f 1, THE PROPERTY OWNER IS RESPONSIBLE FOR MAINTAINING TH£ STGRMWATER
The t
bar
Sidlinvint howl to
5-Fr far he Mrae of Ihs
CONTROLS(s) ACCORDING TO THE APPROVED MAINTENANCE PLAN AND DIRECTION
a depth greater than the
anginal design dspfh for
sediment and remedy the
problem if posslbe. Remora iha
OF NCDEQ
sediment sioraga.
sediment and dispose of it in a
location where it will not taus®
tm acfs fa aheam3 or the BMP,
Erosion has ooeured.
Provide addBtona ergsicn
Protection such as reinforced larf
matffng or rill If needed Po
Weada are pnuant.
rarant future Bros on mblams.
amava the weeds, preferably by
hand. If pastiaida 15 used, wipe 0
on the plants rather than
e v
e a a
spraying.
�7 p
STO R M WAT E R
/+ /�
M A N A G E M E N T DESIGN
pro essono Ora ees
show chat pruning Is needed
rung actor gta best
professional proatlaes
to malnfaln opilmal plant
WET DETENTION
POND
h°°"" lards 3-1sa-asail
i
are dead, or
dying.
peiermino the source of iha
problem: sons, hydrology, dlesare,
etc. Rsmady the problem and
RIPER BASIN: CAPE FEAR
ii RECEIVING STREAM:
BIG AlAMANCE CREEK
replace plants. PI aone-Rme
fertiber opplicafion to
STREAM INDEX:
T6-19 (2 5)
a*blish fhe ground cover if a
STREAM CLASS:
WS-IV;NSW;CA
W®eds are present.
soll test Indicates It Is necassa .
Rsmove iha woods, praferobly t>Y
HUC:
0303000203
hand. If pesticide is used, wipe H
i PROJECT COORDINATES:
36.013681'N,-79.511817 W
on the plants mthar than
sprayil
e m
man area
ma os actursu a
a depth greater than the
ears fir a source o a
wilment and remedy the
i p�Nn DESIGN SUMMARY
onglnaE daslgn sediment
poalble. Remora the
psedlmentfand
DRAINAGE AREA TO POND:
1.12 ACRES
storage depth.
dispose of It In a
locailan *hero it will not cause
51IE IMPERVIOUS AREA TO POND: 0.87 ACRES
im acts to slraams or the IBM?.
F-SITE DESIGN IMPERVIOUS AREA TO POND: 0.0 ACRES
Algalgrow covers over
of the area.
nsu a pro Asa ono o remove
and control the all al rowth.
TOTAL DESIGN IMPERVIOUS AREA TO POND: 0.1I7 ACRES
Coddil, phirti r or ofhor
Invasive plonte carer 50% of
Rsmove iha plants by wiping
r
the boom surface.
ahem vdth Fell (do no
s
PRE -DEVELOPED POST -DEVELOPED POST DEVELOPED POST DEVELOPED POST DEVELOPED
we -am
3n men
ru s eve e o grow
an fhe embankmfl rf
emove s ra s mm a a -
TO POND TO POND THROUGH POND BYPASS COMBINED
Erldenos of muakrat ar beaver
Use traps to romova muskrats
:DRAINAGE AREA:
1,0.91
2.03 AC 1.12 AC AC
activtty Is presal
and consult a professlonal to
CURVE NUMBER:
S1.O 89.7 B1.8
_XTia has a o grow on
remove beavers.
Consu a dam sa a spec al st
TIME OF CONCENTRATION:
13.2 MIN 5 MIN 10 MIN
the embankmerd.
An annual Innspeailan by an
fo remove the fret.
Make all needed rapalrs.
appropriate pmfeaslonal. shows
1.0" STORM EVENT:
ICFS 0,008 CFS
that the embankmenf needs
IISTORM EVENT:
0.536 CFS 3.393 CFS 0.034 CFS 0.277 CFS 0.3t1 CFS
a ou
fell if a liocbie
eves Clogging has accomd,
flan a a au a evice.
2-YEAR STORM EVENT:
1.257 CFS 4.362 CFS 0.152 CF05 .618 CFS 0.770 CFS
The outlet device Is damaged
Olase of the sadlment Off -site,
Repolr ar roplaca fhe aaiat
10-YEAR STORM EVENT:
3.733 CFS 6,799 CF5 1.920 CFS 1.755 CFS 3.675 CFS
davtca.
in9 rater
Erosion or other signs of
damage have occurred al the
Coniad the loot Hill as DMil of
Water QuallfY Regional Office, or
a roc
!OO-YEAR STORM EVENT: 3.479 CFS 10,53 CFS 9.1.77 CFS 3.913 CFS 13.09 CFS
auifat.
the 401 Overall Unit of
3L T t M G . � ice[
SITE DESIGN
CONSULTANT:
Triangle Site Design, PLLC
4004 Barrett Drive
Suite 101
'Raleigh, NC 27609
[phone]
[e-mail]
NC LICENSE #P-0619
SEAL:
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OWNER/DEVELOPER:
Glandon Forest Equity, LLC
3825 Barrett Drive
Suite 100
Raleigh, NC 27609
919-459-2602
919-459--2604 fx
[e-mail]
(LAYOUT COORD: MEL
PLANNING MGR. MEL
DRAWING BY: MEL
DATE: May 3, 2021
JOB NUMBER: 004211
TITLE: STORMWATER
MANAGEMENT
DETAILS
SHEET NUMBER:
c 10
G#------ Burlington-NC62(Alamance)