SW6211003_Plansheet - SCM Detail_20211019

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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" HDPE WITH WATER TIGHT SEAL
PIPE TO BE BEDDED
PER DIRECTION OF GEOTECHNICAL
ENGINEER 2
APPROXIMATE SIZE
EXCAVATE AND BACKFILL
WITH COMPACTED
STRUCTURAL FILL AS
DIRECTED BY GEOTECHNICAL
ENGINEER
14'-15" HDPE @ 2.86%
SILT FENCE AS NEEDED
S MIN
TOp0F
4.2
4' MIN
EMBANKMENT WIDTH
6' TOPSOIL FOR ALL
-
AREAS ABOVE THE
NORMAL POND ELEVATION
7�
TRASH RACK
REFER TO DETAIL
THIS SHEET
6"TOPSOIL ABOVE
� 1
TOP OF ENIBANI31ENT ELEVATION=205.5
6" CLAY LINER
REFER TO DETAIL
too YEAR STORM ELEVATION=205.07
ON LITTORAL SHELF
FOR INCREMENTAL
WEIR
6" CLAY SOIL
LINER ON INSIDE
3
FACE OF
10 YEAR STORM ELEVATION=204.64
EMBANKMENT
1
6
4'x j PRECAST
6FT LITTORAL 1
SHELF
CONCRETE RISER
(INSTALL STEPS
AS NECESSARY)
2 YEAR STORM ELEVATION=204.26
o
M i YEAR STORM ELEVATION=204.14
INV=202.5
1.o-INCH STORDI ELEVATION=202.79
-,7 NORbfAL POND ELEVATION=202.5
1 ELEV=200.5 -
1
4' D IN. ASTM C-923 SEAL BETWEEN
KEY BARREL & RISER. RISER BASE
TO BE FILLED WITH CONC. TO
INVERT OF BARREL
8"18"11"112" LONG ANGLE (6 TOT. REQUIRED) TO ANCHOR RISER TO BASE.
PROVIDE 2-3/4" A307 BOLTS FROM ANGLE TO RISER AND 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. T' HOOKS TO BE PLACED UNDER LOWER
REINFORCING STEEL.
FILTER MEDIA (SEE NOTE 2)
FLOW
FlO7P
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
SEEDBED PREPARATION:
1. CHISEL COMPACTED AREAS AND SPREAD TOPSOIL THREE INCHES DEEP OVERADVERSE SOIL CONDITIONS, IFAVAILABLE.
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. APPLYAGRICULTURAL LIME, FERTILIZER, AND SUPERPHOSPHATE UNIFOR14LYAND MIX WITH SOIL (SEE SEEDING MIXTURE).
5. CONTINUE TILLAGE UNTIL 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 EQLIPMENT OR CULTIPACK AFTER SEEDING.
7. MULCH IMMEDIATELYAFTERSEEDING AND ANCHOR MULCH.
8, INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RE-SEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLE, IF STAND SHOULD
BE MORE THAN 6o%DAMAGED, RE-ESTABLISH FOLLOWING THE ORIGINAL LIME, FERTILIZER AND SEEDING RATES,
9. CONSULT S&ECENVIRONMEVTAL 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 TWO-YEAR WARRANTY FOR BMP PLANTING SURVIVAL/REPLACEMENT.
AT THE END OF THE FIRST YEAR AND AT 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) OF ALL WOODY PLANTS.
SOD WITHIN BMP AND SURROUNDING AREAS TO BE BERMUDA OR CENTIPEDE GRASS.
GRASS OR WILDFLOWER SEED MUST BE APPLIED AT THE RATES SPECIFIED 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 SPECIFIED PLANTING AND
PROTECT AGAINST EROSION BEFORE WATER IS 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 IDE NATIVE PLANT NURSERY 919-662-5566
- GROWING WILD NURSERY 910-259-6361
- NC FOREST SERVICE 919-731-7988
- PLANT DELIGHTS NURSERY 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 SHALL COMPLY WITH ALL APPLICABLE CODES AN D ORDINANCES REGARDING LANDSCAPING.
2. IT IS THE RESPONSIBILITY 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 OBTAINED FROM A
WELL DRAIN ED, 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 SUBSTANCES 1" OR MORE IN DIAMETER, DEBRIS, OR OTHER
OBJECTS WHICH MIGHT BEAHINDERANCETOPLANTING OPERATIONS. TOPSOIL SHALL CONTAINATLEAST 4-6%ORGANIC MATTER BYWEIGHT
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
(3o) DAYS FOLLOWING THE PLANTING OF THE GRASS AND SHRUBS, OR Ho THE DATE THAT STORE OPENS FOR BUSINESS TO THE PUBLIC.
CONTRACTOR SHALL ALSO BE RESPONSIBILITY FOR THE SURVIVAL OF THE BDIP PLANTING MATERIALS DURING THE TWO -PEAR WARRANTY
PERIOD AND SHALL REPLACE ALL PLANTS THAT DO NOT SURNIVE 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.
NO PLANT SUBSTITUTIONS ARE PERMITTED WTTHOUT WRITTEN APPROVAL OF THE OWNERS REPRESENTATATE.
8. FOR NEW PLANTING AREAS, REMOVE ALL PAVEMENT, GRAVEL SUB -BASE AND CONSTRUCTION DEBRIS; REMOVE COMPACTED SOIL AND ADD 18"
NEW TOPSOIL, OR TILL AND AMEND THE TOP 18" OF EXISTING SOIL TO MEET TOPSOIL/PLANTING MIX STANDARDS FOR TREES.
9. ADJUST TREE PLANNING LOCATIONS TO AVOID UNDERGROUND UTILITIES. PLANT r5'FROM .ALL UNDERGROUND I FILITIES(SEWER AND STORM
DRAINAGE, GAS, WATER, PHONE, AND ELECTRICAL LINES.)
STORMWATER MANAGEMENT SYSTEM DETAILS
1 NOT TO SCALE
LOW POINT
LEVEL
PVC ELBOW
SEE DETAIL
\rr�
=o n
NOTE:1.o" STORM ELEVATION IS 202.79 AND INTERMEDIATE
WEIR IS ELEVATION 204.5. THERE IS ADDITIONAL STORAGE
DESIGNED FROM THE i.o" STORM ELEVATION TO THE
INTERMEDIATE WEIR ELEVATION.
2
NOTE: PUMPS SHALL BE USED TO DRAIN
1
THE POND WHEN NECESSARY. REFER TO DETAIL
THIS SHEET FOR DEWATERING REQUIREMENTS.
BOTTOM OF POND (TOP OF SEDIMENT STORAGE)=196.0
CONCRETE SHALL BE
PLACED IN RISER AFTER
ANGLES ARE SECURED TO
BASE AND RISER.
- 5 x5'xL5' 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
(BOTTOM OF SEEDDIMENT SSTrORAGE)r=11995.0
6" CLAY SOIL -
LINER
MAIN POOL
RISI
// ' ..........
"" �jp ?I��ISTING
�, 15" OUTLET PIPE ELIl V�
/�O �t> REFER TO GRADING
0 0 0 0 PLAN000,
�
// / e � 1
/ O� \ 1
INLET PIPE WITH-
� RIP -RAP APRON
20 0 10 20
1 INCH = 20 FEET
GRAPHIC SCALE
OUTLET CONTROL
STRUCTURE REFER TO
DETAILS THIS SHEET
11
O 11 1
TOP OF
EMBANKMENT
Lp 1 1
ELEV=205.5
O 1
L)l 1 1
W„
O u
L)l 1 ,
c9 ,,coo +,7
1
icon AI5
� 1
00 ;fA q i
.`�
IJ 1 1 1
<�o
0 ^ Ar '; u
O 1
P i ;
MAIN POND
AREA
,fi
r r
r yZ
Lr L.
q
LITTORAL SHELF AREA=1,022
..SF REFER TO DETAIL FOR
l
PLANTINGS
l 1
FOREBAYWEIR
J
-STORMWATER
y
MANAGEMENT
\\
EASEMENT
\
\0 1
O
PLAN VIEW
EXISTING GRADE=203.0t
2
1
LIUKLIVUI JriUVVA rUKULtItUll
TRASH RACK)
OUTLET CONTROL STRUCTURE - INCREMENTAL WEIR
6" TOPSOIL ABOVE-
6" CLAY LINER
ON LITTORAL SHELF
6FT LITTORAL 6:1
SHELF
NOTES:
1. 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 � 5.5"
Ca 5.5" SPACING
5.5
55"
5 5„
NOTE: 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
6" TOPSOIL FOR ALL
AREAS ABOVE THE
NORMAL POND ELEVATION
FOREBAY BERBI
3:1
5.o' GRASS FOREBAY
WEIR AT ELEV=202.0
FOREBAY TOP ELEV= 203.5
WIDTH AT TOP = 3.5 FF
FOREBAY ENTRANCE SHALL BE DEEPER
THAN FOREBAY EXIT
PERM. POND ELEV.=202.5
SEDIMENT STORAGE TO
FOREBAY BOTTO
ELEV=too.
RISER STRUCTURE
4" PVC SCREW CAP
FOR CLEANING ACCESS
12" MIN.
4"4' PVC TEE
0.75"DIA. HOLE DRILLED
INTO BOTTOM CAP
PVC DRAIN OUTLET
NOTE: PUMPS SHALL BE USED TO DRAIN
THE FOREBAY WHEN NECESSARY. REFER TO DETAIL
P THIS SHEET FOR DEWATERING REQUIREMENTS.
a
NORMAL POND ELEVATION
BOTTOM LITTORAL SHELF ELEV.
M
BOTTOM OF SEDIMENT -
STORAGE/EXIT
ELEV=199.5
FOREBAY ENTRANCE SHALL BE DEEPER
THAN FOREBAY EXIT
SHALLOW LAND ZONE
HERBACEOUSPLANTS
6
TYPICAL LITTORAL SHELF VEGETATION DETAIL
SCALE: N.T.S.
SCIENTIFIC NAME COMMON NAME PLANTING ZONE QUANTITY NURSERY CONTAINER TYPE
FOREBAY
SHALLOW WATER ZONE
HERBACEOUS PLANTS
POND
(NORMAL POOL)
6" TOPSOIL FOR ALL
AREAS ABOVE THE
NORMAL POND ELEVATION
BOTTOM OF SEDIMENT
STORAGE/ENTRANCE
ELEV=i99.o
SPACING PLANTING SEASON
Jancus effusus
Soft Rush
SHALLOW WATER
43
PEAT POT
C O.C.
SPRING/SUMMER
Iris virginica
Blue Flag Iris
SHALLOW WATER
43
PEAT POT
C O.C.
SPRING/SUMMER
Schocnoplectus tabernacmontani
Soft Stem Bulrush
SHALLOW WATER
43
PEAT POT
6' O.C.
SPRING/SUMMER
Eupatoriadelphus maculatus
Spotted Trumpetweed
SHALLOW LAND
43
PEAT POT
C O.C.
SPRING/SUMMER
Eupatorium purpureum
Joe-Pye Weed
SHALLOW LAND
43
PEAT POT
C O.C.
SPRING/SUMMER
Rhynchospora colorata
Starrush Whitetop
SHALLOW LAND
43
PEAT POT
C O.C.
SPRING/SUMMER
TYPICAL LITTORAL SHELF PLANTING SCHEDULE
STORMWATER MANAGEMENT NOTES:
1. THE DEVELOPER OR HIS AGENT SHALL CONTACT THE DESIGN ENGINEER WHEAT THE
BEST MANAGEMENT PRACTICE(S) ARE CONSTRUCTED AND ABOUT TO BECOME
OPERATIONAL SO A FINAL INSPECTION CAN BE PERFORMED TO DETERMINE
COMPLIANCE WITH THEAPPROVED PLAArCAArBE PERFORMED.
2. ANNUAL MAINTENANCE INSPECTIONAND REPORT REQUIRED - THE OWNER OFA
PER3IITTED STRUCTURAL STORMWATER B3 P/CONTROL SHALL AATNUALLYSUBMITA
MAINTENANCE AND INSPECTION REPOR T FOR EACH BAP TO THE STORMWATER
ADMINISTRATOR. ANNUAL INSPECTIONS SHALL BEGIN WITHIN ONE YEAR OF THE
RECORDATIONOFANYDEED(S) SHOWING STORI IVATER BMPs/CONTROL STRUCTURES.
3. UPON COMPLETION OF THE PROJECT, AND BEFORE A CER TIFICA TE OF OCCUPANCY
SHALL BE GRANTED, THE ENGINEER OF RECORD SHALL CERTIFY THAT THE
COMPLETED PROJECT IS INACCORDANCE WITH THEAPPROVED STORALWATER
MANAGEMENT PLANSAND DESIGNS.
4. A FINAL INSPECTION OF THE SITE AND STORMWATER MANAGEME.'VT BMP/CONTROLS
TO BE SCHEDULED WITHAND COMPLETED BYTHE PROJECT ENGINEER .
5. NCDEQ AND THEIR ASSIGNS HAVE RIGHT TO ACCESS THE STORMWATER CONTROL(s)
FOR INSPECTIONS OR 31AINTEN9NCEAS NECESSARY.
6. THE ENGINEER'S CERTIFICATION OF COMPLETION WILL BE REQUIRED PRIOR TO THE
FINAL PLAT OR CERTIFICATE OF OCCUPANCY. THE STORUHATER CONTROL IS TO BE
INSPECTED TO ENSURE ITIS FUNCTIONING AS DESIGNED AND HAS FULL DESIGN
VOLUME PRIOR TO ISSUANCE OF THE FINAL CERTIFICATE OF OCCUPANCY.
1, THE PROPERTY OWNER IS RESPONSIBLE FOR MAINTAINING THE STOnIWATER
CONTROLS(s)ACCORDING TO THEAPPROVED MAINTENANCE PLANAND DIRECTION OF
NCDEQ
�STORMWATER MANAGEMENT DESIGN
WET DETENTION POND
RIVER BASIN: LUMBER
RECEDING STREAM: RAFT SWAMP
STREAM INDEX: 14-1041)
STREAM CLASS: C;Sw
HUC: 0304020305
PROJECT COORDINATES: 34.886899°N,-79.207507°W
POND DESIGN SUMMARY
DRAINAGE AREA TO POND: r.o0 ACRES
SITE IMPERVIOUS AREA TO POND: 0.79 ACRES
OFF -SITE DESIGN IMPERVIOUS AREA TO POND: ono ACRES
TOTAL DESIGN IMPERVIOUS AREA TO POND:
0.79 ACRES
PRE -DEVELOPED
POST -DEVELOPED
POST DEVELOPED
POST DEVELOPED
POST DEVELOPED
TOPOND
TOPOND
THROUGH POND
BYPASS
COMBINED
DRAINAGE AREA:
2.02 AC
im AC
1.02 AC
CURVE NUMBER:
53.6
87.9
52.1
TIME OF CONCENTRATION:
13.1 MN
5 MIN
to MIN
1.0" STORM EVENT:
0.187 CFS
0.007 CFS
1-YEAR STORM EVENT:
o.lo8 CFS
3.059 CFS
o.or9 CFS
0.029 CFS
0.048 CFS
2-YEAR STORM EVENT:
0.525 CFS
3.963 CFS
0.087 CFS
0.187 CFS
0.274 CFS
to -YEAR STORM EVENT:
2.807 CFS
6.519 CFS
o.986 CFS
1.242 CFS
2.228 CFS
too-YEARSTORM EVENT:
8.044 CFS
1o.6o CFS
7.973 CPS
3.795 CFS
11.77 CPS
STAGE STORAGE TABLE
STAGE
ELEVATION
CONTOUR
INCREMENTAL
TOTAL
(FT)
(FT)
AREA (SF)
STORAGE (CF)
STORAGE (CF)
0.0
202.5
2350
0
0
0.5
203.0
3043
1348
1348
1.0
203.5
3468
1628
2976 (WQV)
1.5
204.0
3993
1865
4841
2.5
205.0
4767
4380
9221
3.0
205.5
5176
2486
11707
OPERATION & MAINTENANCE
BMP element:
Potentialproblem:
How I will remediate the problem
The entire BMP
Trash/debris is present
Remove the trash/debris
The Perimeter of the wet
etention basin
Areas of bare soil and/or
erosive gullies have formed
Regrade the soil if necessaryto
remove the gully, and then plant
a ground cover and water until it
is established. Provide lime and
a one-time fertilizer application
Vegetation is too short or too
Maunam vegetation at a height
long
of approximately six inches.
e inletdevice: pipe or
The pipe is clogged.
Unclog the pipe. Dispose o t e
wale
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged
Erosion is occurring in the
Regrade the swale if necessary
swale.
to smooth it over and provide
erosion control devices such as
reinforced turf matting or riprap
to avoid future problems with
erosion.
The forebav
Sediment has accumulated to
Search for the source o the
a depth greater than the
sediment and remedy the
original design depth for
problem if passible. Remove the
sediment storage.
sediment and dispose ofitin a
location where it will not cause
impacts to streams or the BMP.
Erosion hasoccure .
ProVI ea ttmna erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Wee s are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it
on the plants rather than
spraying.
The vegetated shelf
Best professional practices
Prune according to best
show that pruning is needed
professional practices
to maintain optimal plant
health.
Plants are dead, diseased or
Determine the source of the
dying.
problem: soils, hydrology, disease,
etc Remedy the problem and
replace plants. Provide a
one-time fertilizer application to
establish the ground cover if a
soil test indicates it is necessarv.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticide is used, wipe it
on the plants rather than
spraying.
The main treatment area
Sediment has are elated to
Search or the source of t e
a depth greater than the
sediment and remedy the
original design sediment
problem if possible. Remove the
storage depth.
sediment and dispose ofitin a
location where it will not cause
impacts to streams or the BMP.
Aga growt covers over 5o%
Consult a professional to remove
of the area.
and control the algal growth.
Cattails, phragmites or other
Remove the plants by wiping
invasive plants cover 50% of
them with pesticide (do no
the basin surface.
spray)
The embankment
Shrubs have started to grow
Remove shrubs immediately.
on the embankment
Evidence of muskrat or beaver
Use traps to remove muskrats
activity is present.
and consult a professional to
remove beavers.
Atree has started to grow on
Consult a dam safety specialist
the embankment.
to remove the tree.
An annual innspection by an
Make all needed repairs.
appropriate professional shows
that the embankment needs
repair. (if applicable)
The outlet device
Clogging has occurred.
Clean out the outlet device.
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
Contact the local NC Division of
damage haveoccurred at the
Water Quality Regional Office, or
outlet.
the 401 Oversight Unit at
010-71q-1786.
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CONSULTANT:
Bowman North Carolina, Ltd.
(Formerly Triangle Site Design, PLLC)
4004 Barrett Drive, Suite 101
Raleigh, NC 27609
[phone]
[e-mail]
FIRM# F-1445
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OWNER/DEVELOPER:
RHETSON COMPANIES, INC.
AM. ALAN CAGLE
2075 JUNIPER LAKE ROAD
WEST END, NC 27376
[phone]
alan@rhetson,com
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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 Bowman North
Carolina, Ltd. shall be without
liability to Bowman North Carolina,
Ltd.
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Drawn
Checked
Rhetson Project# 20138
Project No. 058001
Initial Date: September 20, 2021
Title
STORMWATER
MANAGEMENT
DETAILS
Sheet No.
C-10
)G#23213-Red Springs (Hoke