SW6210901_Plansheet - SCM Detail_20210908

CONSTRUCTION SEQUENCE
FOR WET DETENTION POND:
1, INSTALL EROSION CONTROLS,
2. CONSTRUCT DAM BASE AND AREAS BELOW THE
NORMAL POOL. CONSTRUCTION TO BE PERFORMS
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.
24" HDPE WITH WATER TIGHT SEAL
PIPE TO BE BEDDED
PER DIRECTION OF GEOTECHNICAL
ENGINEER 2
T MIN
APPROXIMATE SIZE
EXCAVATE AND BACKFILL
WITH COMPACTED
STRUCTURAL FILL AS
DIRECTED BY GEOTECHNICAL
ENGINEER
26'-24" HDPE @ 0.77%
SILT FENCE AS NEEDED
rap0F
�583
4' MIN
EMBANKMENT WIDTH
6" TOPSOIL FOR ALL
AREAS ABOVE THE
NORMAL POND LEVATION
6" CLAY SOIL
LINER ON INSIDE
FACE OF
EMBANKMENT
TRASH RACK
REFER TO DETAIL
THIS SHEET
6" TOPSOIL ABOVE
6" CLAY LINER
NLITTORAL
ORAL SHELF
3�1 6I--. 1
INV=295.4
1 ELEV=293,4
1
41 11N.
ASTM C-923 SEAL
KEY BETWEEN BARREL&
RISER. RISER BASE TO BE
FILLED WITH CONC. TO
8"X8"X1"X12" LONG ANGLE (6 TOT, REQUIRED) TNA"IllARRECO
BASE, PROVIDE 2-314"A307 BOLTS FROM ANGLE TO RISER AND
2-A307 "J" HOOKS 314" 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)
_...-_F1QiI5L
PRIOR TO INSTALLATION, MANUFACTURER SPECIFICATIONS OF FILTER MEDIA SHALL BE REVIEWED TO
ENSURE THAT DISCHARGE FROM FILTER MEDIA SHALL MEET OR EXCEED THE PROVISIONS OF THE CLEAN
WATER ACT,
ENSURE THAT PUMP PRESSURE DOES NOT EXCEED FILTER MEDIA PRESSURE RATING,
FILTER MEDIA MAY BE BUT NOT LIMITED TO 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 OF POINT
SEEDBED PREPARATION:
1. CHISEL COMPACTED AREAS AND SPREADTOPSOJL THREE INCHES DEEP OVER ADVERSE SOIL CONDITIONS, IF AVAILABLE.
2. RIP THE ENTIRE AREA TO SIX INCHES DEEP,
3. REMOVE ALL LOOSE ROCK, ROOTS AND OTHER OBSTRUCTIONS, LEAVING SURFACE REASONABLY SMOOTH AND UNIFORM.
4. APPLY AGRICULTURAL LIME, 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,
6. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RE-SEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLE. IF STAND SHOULD BE MORE THAN 60°!" DAMAGED,
RE-ESTABLISH FOLLOWING THE ORIGINAL LIME, FERTILIZER AND SEEDING RATES.
9. CONSULT 58EC ENVIRONMENTAL ENGINEERS ON MAINTENANCE TREATMENT AND FERTILIZATION AFTER PERMANENT COVER IS ESTABLISHED.
LANDSCAPE NOTES;
ALL LANDSCAPING SHALL BE IN COMPLIANCE WITH THE NCDEQ BMP REQUIREMENTS.
LANDSCAPE CONTRACTOR SHALL PROVIDE A IWO-YEAR WARRANTY FOR BMP PLANTING SURVNAUREPLACEMENT.
AT THE END OF THE FIRST YEAR ANDAT THE END OF THE Two -YEAR WARRANTY PERIOD, ALL PLANTS THAT DO NOT SURVIVE MUST BE REPLACED.
ESTABLISHMENT PROCEDURES, SUCH AS CONTROL OF INVASIVE WEEDS, ANIMAL AND VANDAL DAMAGE, MULCHING, RE -STAKING, WATERING, AND MESH OR TUBE PROTECTION
REPLACEMENT, SHALL BE IMPLEMENTED TO THE EXTEND NEEDED TO ENSURE PLANT SURVIVAL, STAKING MUST BE REMOVED AFTER ESTABLISHMENT (APPROXIMATELY 12 MONTHS), TO
PREVENT GIRDLING (STRANGLING) OFALL WOODY PLANTS,
SOD WITHIN BMP AND SURROUNDING AREAS TO BE BERMUDA OR CENTIPEDE GRASS.
GRASS OR WILDFLOWER SEED MUST BE APPUEO AT THE RATES SPECIFIER BY THE SUPPLIERS. IF PLANT ESTABLISHMENT CANNOT BE ACHIEVED WITH SEEDING BY THE TIME OF
SUBSTANTIAL COMPLETION OF THE STORMWATER FACILITY PORTION OF THE PROJECT, THEN THE CONTRACTOR SHALL PLANT THE AREA WITH WILDFLOWER SOD, PLUGS, CONTAINER
PLANTS, OR OTHER MEANS TO COMPLETE THE SPECIF€ED PLANTING AND PROTECT AGAINST EROSION BEFORE WATER 15 ALLOWED TO ENTER THE STORMWATER BMP FACILITY.
ALL MATERIALS SHALL BE ACQUIRED FROM AN APPROVED NCDEQ PLANT VENDOR, PLANT MATERIAL SHOULD BE PURCHASED FROM A LOCAL SOURCE TO ENSURE SURVIVABILITY. LOCAL
VENDORS FOR THIS SITE INCLUDE:
CILL ICE NA-5VE PLANT NURSERY 919-662.5566
GROWING WILD NURSERY 910-25M361
NC FOREST SERVICE 919-731-7988
-PLANT DEUGHTSNURSERY 919-772-4794.
TARHEEL NATIVE TREES 919,553.5927
IMMEDIATELY AFTER THE WET DETENTION BASIN IS ESTABLISHED, THE PLANTS ON THE VEGETATED SHELF AND PERIMETER OF THE BASIN SHOULD BE WATERED TWICE WEEKLY IF NEEDED
UNTIL THE PLANTS BECOME ESTABLISHED (COMMONLY SIX WEEKS)
NO PORTION OF THE WET DETENTION POND SHOULD BE FERTILIZED AFTER THE FIRST INITIAL FERTILIZATION THAT IS REQUIRED TO ESTABLISH THE PLANTS ON THE VEGETATED SHELF.
LANDSCAPING NOTES.
1. CONTRACTOR SHALt COMPLY WITH ALL APPLICABLE CODES AND ORDINANCES REGARDING LANDSCAPING.
2. IT IS THE RESPONSIBILITY OF THE CONTRACTORTO ESTABLISH A HEALTHY STANDGRASS ON ALLSEEDED AREAS.
3, CONTRACTOR SHALL PROVIDE NATURAL TOPSOIL THAT IS FERTILE, FRIABLE, WITHOUT MIXTURE OF SUBSOIL MATERIALS, AND OBTAINED FROM A'NELL DRAINED, AVAILA$LE 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
SUBSTANCES 1' OR MORE IN DIAMETER, DEBRIS, OR OTHER OBJECTS WHICH MIGHT. BE AHINDERANCE TO PLANTING OPERATIONS. TOPSOIL SHALL CONTAIN AT LEAST4-67, 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) THIRTY (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
PLANTING MATERIALS DURING THE TWO-YEAR WARRANTY PERIOD AND SHALL REPLACE ALL PLANTS THAT DO NOT SURVIVE AT THE END OF THE FIRST YEAR AND AT THE END OF THE
SECOND YEAR OF THE WARRANTY PERIOD.
5. CONTRACTOR TO VERIFY QUANTITIES PRIOR TO COMMENCING WORK.
6, ANY DISTURBED AREAS NOT SCHEDULED FOR HARDSCAPE, PLANTINGS; OR MULCH SHALL BE SEEDED LAWN. REFER TO SITE PLAN FOR LOCATION OF AREAS TO BE SODDED.
1. NO PLANT SUBSTITUTIONS ARE PERMITTED WITHOUT WRITTEN APPROVAL OF THE OWNERS REPRESENTATIVE
8. FOR NEW PLANTING AREAS, REMOVE ALL PAVEMENT, GRAVEL SLIMASE AND CONSTRUCTION DEBRIS, REMOVE COMPACTED SOIL AND ADD 16" NEW TOPSOIL, OR 11LL AND AMEND THE
TOP 16" OF EXISTING SOIL TO MEET TOPSOE RLANTINO MIX STANDARDS FOR TREES.
9. ADJUST TREE PLANTING LOCATIONS TO AVOID UNDERGROUND UTILITIES. PLANT 15' FROM ALL UNDERGROUND UTILITIES (SEWER AND STORM DRAINAGE, GAS, WATER, PHONE, AND
ELECTRICAL LINES.)
LEVEL
REFER TO DETAIL
�- FOR INCREMENTAL
WEIR
44' PRECAST
CONCRETE RISER
(INSTALL STEPS
AS NECESSARY)
PVC ELBOW
SEE DETAIL
p� I� 2 NOTE: PUMPS SHALL BE USED TO DRAIN
1 THE POND WHEN NECESSARY. REFER TO DETAIL
CONCRETE SHALL BE ` I 1
PLACED IN RISER
AFTER ANGLES ARE
SECURED TO BASE AND
RISER.
5'x5'x1.5' CONC, BASE REINFORCE WITH #4 BARS AT 12" O.C. TOP AND
BOTTOM OF EACH DIRECTION PROVIDE 3" MIN, CLEARANCE BETWEEN
EDGE OF CONC. AND STEEL REINFORCING,
PROFILE OF WET POND DETENTION SYSTEM
SCALE: N,T,S,
TOP OF EMBANKMENT ELEVATION-300.0
100 YEAR STORM ELEVATION=299.27
10 YEAR STORM ELEVATION=298.24
2 YEAR STORM ELEVATION497,18
1 YEAR STORM ELEVATiONz297,01.
1.0-INCH STORM ELEVATION=295,53
NORMAL POND ELEVATION=295,4
THIS SHEET FOR DEWATERING REQUIREMENTS,
BOTTOM OF POND (TOP OF SEDIMENT STORAGE)=292.0
(BOTTOM OF SEDIMENT STORAGE)=291,0
RIS.
EXISTING GRADE=300.0f
rnn nr nrRUCTURE NOT SHOWN FOR CLARITY
.E 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 I
6FT 6:1 �!
LITTORAL I I
6" CLAY SOIL NOTES:
LINER 1. SEE DESIGN PLANS FOR SPECIFIED DIMENSIONS OF RISER,
MAIN POOL 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
NON CORROSIVE MATE / r 1 \
@ 5.5' SPACING / / \ N
5.5
i I I
NOTE: RISER
TRASH RACK SHALL BE INSPECTED
PERIODICALLY AND ANY DEBRIS ON
THE TRASH RACK IS TO BE REMOVED
AND PROPERLY DISPOSED OF.
TRARP RAf.K nPTAII .
OREBAY WEIR
303
300
93
I l r rl I
rl rl I __j it
FOREBAYAREACN
CREBAYAREA
0 �GClOa' U o °O.�O`�`i� �j/ .- - ,. __. - y,. - - - - - \
LITTORAL SHEL Iltr c a
AREA-3,310SF REFER TO ( c rr
DETALFORPLANTINGS
a\N\ NNPOND AREA
rr o�° Cal � i ao p57
C%4
CD 58
1
0
° UTLET CONTROL
49 STRUCTURE REFER TO
SOD AREASABOV �i asoo �\ DETAILS THIS SHEET
NORMAL POOL cc , _ G
ELEVATICN
24" OUTLET PIPE
REFERTOop 4 1
GRADING PLAN 000
\\ Dicer00000
ap
40
o /
TOP OF EMBANKMENT=300. °n° /i' % // �✓// 000010
40 / .�`/ / x /
GRAPHIC SCALE PLAN VIEW
30 0. 15 .30 60 120
1 INCH =30 FEET
I I' MiN. GRASS FOREBAY
WEIR AT ELEV=294.0
FOREBAY TOP ELEV= 296.4
WIDTH AT TOP = 2.0 FT
RISER STRUCTURE
4" PVC SCREW CAP
FOR CLEANING ACCESS
12" MIN.
4"x4" PVC TEE
PERM, POND ELEV.=295,4
2 z"DIA. HOLE DRILLED J
INTO BOTTOM CAP PVC DRAIN OUTLET
SCALE; N.T.S.
NOTE; PUMPS SHALL BE USED TO DRAIN
FOREBAY BOTTOM THE FOREBAY WHEN NECESSARY. REFER TO DETA1
THIS SHEET FOR DEWATERING REQUIREMENTS,
ELEV=293,5 33
NORMAL POND ELEVATION11 i
FOREBAY ENTRANCE SHALL. BE--" BOTTOM OF SEDIMENT
DEEPER THAN FOREBAY EXIT STORAGE
ELEV=292,5 FOREBAY 6" TOPSOIL FOR ALL --
AREAS ABOVE THE
NORMAL POND ELEVATION
SHALLOW LAND ZONE SHALLOW WATER ZONE
HERBACEOUS PLANTS HERBACEOUS PLANTS
r(NORMALPOOL)
1I
TYPICAL LITTORAL`�SH-E-L-F VEGETATION DETAIL
SCALE:N.T.S.
SCIENTIFIC NAME COMMON NAME PLANTING ZONE QUANTITY NURSERY CONTAINER TYPE SPACING PLANTING SEASON
Janus effusus
Soft Rush
SHALLOW WATER
138
PEAT POT
6' Q.C.
SPRING/SUMMER
Iris virgWw
Blue Flag Iris
SHALLOW WATER
138
PEAT POT
6' O.C,
SPRINGISUMMER
Schoenoplectus tabernaemontani
Eupatoriadelphus maculatus
Soft Stem Bulrush
Spotted Trumpetweed
SHALLOW WATER
SHALLOW LAND
13B
138
PEAT POT
PEAT POT
6' O.C.
6' O.C,
SPRINGlSUMMER
SPRINGISUMMER
Eupatorium purpureum
Joe -Rye Weed
SHALLOW LAND
138
PEAT POT
6' O.C.
SPRINGISUMMER
Rhynchospara colorafa
Starrush VI
SHALLOW LAND
13.8
PEAT POT
6' O,C,
SPRINGISUMMER
TYPICAL LITTORAL SHELF PLANTING SCHEDULE
STORMWATER MANAGEMENT NOTES:
1, THE DEVELOPER OR HIS AGENT SHALL CONTACT THE DESIGNENGINEER WHEN
THE BEST MANAGEMENT PRACTICES) ARE CONSTRUCTEDAND ABOUT TO
BECOME OPERATIONAL SOA FINAL INSPECTION CAN BE PERFORMED TO
DETERMINE COMPLIANCE WITH THEAPPROVED PLAN CAN BEPERFORMED,
2. ANNUAL MAINTENANCE INSPECTIONAND REPORT REQUIRED - THE OWNER OFA
PERMITTED STRUCTURAL STORMWATER BMPICONTROL SHALL ANNUALL YSUBMIT
A MAINTENANCEAND INSPECTIONREPORTFOR EACHBMP TO THESTORMWATER
ADMINISTRATOR. ANNUAL INSPECTIONS SHALL BEGIN WJ77 WN ONE YEAR OF THE
RECORDATION OFANY DEED(S) SHOWING STORMWATER BMPsICONTROL
STRUCTURES.
3, UPON COMPLETION OF THE PROJECT, AND BEFOREA CERTIFICATE OF
OCCUPANCYSHALL BE GRANTED, THEENGINEER OFRECORD SHALL CERTIFY
THAT THE COMPLETED PROJECT MW ACCORDANCEWITH THEAPPROVED
STORMWA TER MANAGEMENTPLANS AND DESIGNS.
4. A FINAL INSPECTION OF THE SITEAND STORMWA TER MANAGEMENT
BMP/CONTROLS TO BE SCHEDULED WITHAND COMPLETED BY THE PROJECT
ENGINEER.
5. NCDEQ AND THEIRASSIGNS HAVERIGHT TO ACCESS THESTORMWATER
CONTROL(s) FOR INSPECTIONS OR MA INTENANCEA5NECESSARY.
6. THE ENGINEERS CERTIFICATIONOFCOMPLETIONWILL BEREQUIREOPRIOR TO
THE FINAL PLA T OR CERTIFICATE OF OCCUPANCY THE STORMWA TER CONTROL
IS TO BE INSPECTED TO ENSURE ITIS FUNCTIONING AS DESIGNEDAND HAS
FULL DESIGN VOLUME PRIOR TO ISSUANCE OF THE FINAL CERTIFICATE OF
OCCUPANCY.
11, THE PROPERTY OWNER ISRESPONSIBLE FOR MAINTAININGTHE STORMWATER
CONTROLS(s)ACCORDING TO THEAPPROVEO MAINTENANCE PLANAND DIRECTION
OF NCDEQ
STORMWATER MANAGEMENT DESIGN
WET DETENTION POND
RIVER BASIN: LUMBER
RECEIVING STREAM: TONEY'S CREEK (RAFT SWAMP}
STREAM INDEX: 14.10.1.2
STREAM CLASS: C; Sw
HUG: 031)40203
PROJECT COORDINATES: 34.987031 °N,-79.26057B°W
POND DESIGN SUMMARY
DRAINAGE AREA TO POND:
1533 ACRES
SITE IMPERVIOUS AREA TO POND:
7.01 ACRES
OFF -SITE DESIGN IMPERVIOUS AREA TO POND:
0.9 ACRES
TOTAL DESIGN IMPERVIOUS AREA TO POND:
7.01 ACRES
PRE -DEVELOPED POST -DEVELOPED POST DEVELOPED POST DEVELOPED POST DEVELOPED
TO POND
TO POND THROUGH POND BYPASS COMBINED
DRAINAGE AREA; 17.43 AC
15.83 AC 1.60 AC
CURVE NUMBER: 793
77.8 73.5
TIME OF CONCENTRATION: 27.2 MIN
10 MI I N. 10 MN
1,0" STORM EVENT:
0.285 CFS 0,027 CFS
1-YEAR STORM EVENT: 19.86 CFS
26.27 CFS 1.131 CFS 2,055 CFS 3.186 CFS
2-YEAR STORM EVENT: 27.93 CFS
37.33 CFS 4.166 CFS 3,073 CFS 7.239 CFS
10-YEAR STORM EVENT: 51.46 CF5
70.12 CFS 18.04 CFS 6.171 CF5 24.21 CFS
100-YEAR STORM EVENT: 90.40 CFS
124.68 GFS 86.18 CFS 11.56 GFS 97.74 CF5
STAG EISTO RAGE TABLE
STAGE
ELEVATION
CONTOUR
(FT)
(FT)
AREA (SF)
0.0
295.4
23635
0.5
295.9
26060
0.6
296.0
26385
1.0
2964
276BO
1.6
297.0
29690
2.6
298.0
32250.
3.6
299.0
34865
4.6
300.0
37090
INCREMENTAL
TOTAL
STORAGE(CF}
STORAGE(CF,
0
0
12424
12424
2622
15046
10813
25859(0v)
17211
43070
30970
74040
33558
107598
35978
143575
OPERATION & MAINTENANCE
BMP element:
Potential roblem:
How I will remedlate the problem
The entire BMP
Trashldebns Is present
KefnoVe the has debris
The Perimeter of the wet
Areas of barc soil ancifor
Ragra - the soI if necessa o
detention basin
erosive gullies have formed
remove he gully, and then pp ant
a ground eover and water until it
is established. Provide lime and
a one-time fe1¢er appkafien
Vegetalion is too short or too
Maintain vegetation at a height
Ion
of opproxngtely six in6e ,
The inlet device; pipe or
The pipe is clogged,
Unciog the pipe. Dispose of the
Swale
sedlmento -site,
Replace lihe pipe.
The pipe is cracked or
Regrade the Swale if necessary
to smooth it aver and provide
Erosion Is occurring in the
Swale,
erosion control devices such aS
reinforced turf matting or riprap
to avoid future problems with
erosion,
The forebay
Sediment has accumulated to
adepinggreaterthanthe
-5 rcri for Ine so-0-rce-bTff e
sediment and rern the
origginal design depth for
problem rf possibie. f ewe the
sediment slorage,
sediment and dispose of i1 in a
Iocallon where it will not cause
impacts to streams or the BMP.
Provide additional erosion
protection such as reinforced turf
Erosion has occured,
matting or riprap if needed to
prevent future erosion problems,
Remove the weeds, preferably by
Weeds are present
hand, If pesticide is used, wipe it
on the plants rather than
spraying.
The vegelaled shelf
es pro esslona prat Ices
show that pruning Is needed
rune actor Ing o es
professional practices
to maintain optmal plant
health
Determine the source of the
Plants are dead, disease or
dying.
problem: soils hydrology, disease,
etc, Remedy the problem and
repiace plants. Provide a
one-time fertilizer application to
establish the ground cover if a
soil test indicates it is necessary,
Weeds are present
Remove tlhe weeds, preferably qy
hand. If pesticido is used, wipe It
the than
on plants rather
spraying.
The main treatment area
Sediment has accumulated to
a depth ggreat-rthan the
Seara for t e source at Te
im n r sed e f and erredy the
if Remove t o
sloo a� ddep n sediment
problem possible,
ediment ad dispose of It in a
g p�'
location where it will not cause
impacts to streams or the BMP.
Consult a professional to remove
a growl covers ov-r 50 o
c)fare
and control the al al growth.
Remove iho by
Cattails, phragmites or other
plants wiping
invasive plants cover 50"1" or
them with pesticide (do no
the basin surface,
s ra
The embankmunt
Shrubs have started to grow
on he-embankwi
Hemove s ru s Imme Ia y.
Use traps to remove muskrats
Evidence of muskrat or beaver
active is present,
and consult a professional to
remove beavers.
Consult a dam safely specialist
A tree has started to grow en
the embankment.
10 remove the tree.
An annual innsppecton by an
Make all needed repairs.
appropriate professicnai shows
that th- embankment needs
Tpair. (if applicable)
The outlet device
C egging has occurr-tl.
Clean out the cudel devin.
Dispose of the sediment off site,
The outlet device is damaged
Repair or replace the outlet
device.
The receiving water .
Erosion or other signs of
damage have occurred at the
Gantace local N(; DI o
Water Quali Re Tonal Of [ce, or
h` g
oullet.
the 401 Oversight Unit at
LU
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CONSULTANT:
TRIANGLE SITE DESIGN, PLLC
4004 BARRETT DR, STE 101
RALEIGH, NC 27609
[phone]
LICENSE 9P-0619
[e-mail]
.�'%,� CARo
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DEVELOPER:
Spout Springs Holdings, LLC
Attn. Allen Jordan
275 South Bennett Street
Southern Pines, NC 28387
[phone]
[e-mail]
Z3 .
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This document, together with the
concepts and designs presented
herein, as an instrument of services, is
intended Only for the specific purpose
and client for which it was prepared,
Reuse of and improper reliance on this
document without written authorization
and adaptation by Triangle Site Design,
PLLC shall be without liability to
Triangle Site Design, PLLC,
0
�n a,
Drawn
Checked
Approved
Project No, 002003
Original Submittal Dale: August 23, 2021
Title
STORMWATER
MANAGEMENT
DETAILS
Sheet No.
C1 r5B
_ m
c � _. , •'-R-+, -� r44HA