SW6190903_Plan (SCM Detail)_20200102

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.
EMBANKMENT WIDTH
3. INSTALL OUTLET PIPE, RIP -RAP APRON AND
STONE FILTER RING. 6" TOPSOIL FOR ALL
AREAS ABOVE THE
4. CONSTRUCT OUTLET STRUCTURE. NORMAL POND ELEVATION
5. REMOVE ACCUMULATED SEDIMENT AND
SEED UPON COMPLETION.
15" HOPE WITH WATER TIGHT SEAL
PIPE TO BE BEDDED
PER DIRECTION OF GEOTECHNICAL
ENGINEER 3
1 6" CLAY SOIL
LINER ON INSIDE
FACE OF
EMBANKMENT
CUTOFF TRENCH
APPROXIMATE SIZE
EXCAVATE AND BACKFILL
WITH COMPACTED
4' MIN
STAGE/STORAGE TABLE \OFTOP OF NOT (EM VABLEUCTURE TRASH R CK)HOWM FOR CLARITY RISER STRUCTURE
STAGE ELEVATION CONTOUR INCREMENTAL TOTAL wflQ 4" PVC SCREW CAP
(FT) (FT) AREA (SF) STORAGE (CF) STORAGE (CF) /3JS FOR CLEANING ACCESS
0.0 132.5 3195 0 0 /NTfpM f0/AT \�
0.5 133.0 3990 1796 1796 f Wf/R
0.7 1331 4675 867 2563 (WQv) 7T3a FT TOTAL
1.5 134.0 9325 5600 8263 WEIR LENGTH 12" MIN,
AT ELEV=133.2 F
I
4.p p0 4"x4" PVC TEE
TRASH RACK
REFER TO DETAIL PERM. POND ELEV.=132.5
THIS SHEET
TOP OF EMBANKMENT ELEVATION=134.0 EXISTING GRADE=138.0±
100 YEAR STORM EiEVATION=133.97 OUTLET CONTROL STRUCTURE INCREMENTAL WEIR
- REFER TO DETAIL SCALE:N.T.S.
FOR INCREMENTAL
WEIR 6" TOPSOIL FOR ALL
AREAS ABOVE THE
10 YEAR STORM ELEVATION=133.74 NORMAL POND ELEVATION
PRECAST FOREBAY BERM
CONCRETE RISER li -�
(INSTALL STEPS Iq
AS NECESSARY) 2 YEAR STORM ELEVATION=133.47 6" TOPSOIL ABOVE
i YEAR STORM ELEVA1ION=133.35
6" CLAY LINER 3:1
I 1.0-INCH STORM ELEVATION=132.81 ON LITTORAL SHELF --
17 NORMAL POND ELEVATION=132.5
_ - -6FT LITTORAL 6:1 1
- SHELF -
PVC ELBOW -
J ' ' SEE DETAIL
2 NOTE; PUMPS SHALL BE USED TO DRAIN _'�
THE POND. WHEN NECESSARY. REFER TO, DETAIL _� I IT 5' GRASS FOREBAY
THIS SHEET FOR DEWATERING REQUIREMENTS. i I �.� WEIR AT ELEV=131.0
BOTTOM OF POND (TOP OF SEDIMENTISTORAGE)=127.0
CONCRETE SHALL BE
PLACED IN RISER AFTER �- r BOTTOM F SEDIMENT SORAGE =26.i
ANGLES ARE SECUREDOOETT
���4 I - ( 10
)
TO BASE AND RISER.
STRUCTURAL FILL A5 2-A307 "J" HOOKS 3/4" DIA. X 12" LONG FROM ANGLE TO BASE.I� -- -- - -
ANGLE TO BE FIELD COATED WITH ZINC RICH PAINT AFTER- _
DIRECTED BY GEOTECHNICAL CONSTRUCTION. "J" HOOKS TO BE PLACED UNDER LOWER REINFORCING
ENGINEER STEEL 6" CLAY SOIL
5'x5'xi.5' CONC. BASE REINFORCE WITH #4 BARS AT 12" O.C. TOP LINER
AND BOTTOM OF EACH DIRECTION PROVIDE 3" MIN. CLEARANCE MAIN POOL NOT S:
BETWEEN EDGE OF CONC. AND STEEL REINFORCING.
10'-15" HOPE � 1.0% 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.
ILTER MEDIA (SEE NOTE 2) 4. ALL COMPONENTS OF TRASH RACK SHALL BE OF STAINLESS STEEL OR OTHER NON -CORROSIVE MATERIAL.
PROFILE OF WET POND DETENTION SYSTEM 5. ALL MOUNTING HARDWARE SHALL BE OF STAINLESS STEEL OR OTHER NON -CORROSIVE MATERIAL
SILT FENCE AS NEEDED PUMP SCALE: .T.S. TRASH RACK
FL_.-� --
O NON CORROSIVE MATERIAL / /� \\ \ 5.5"
® 5.5" SPACING / \
TRi1SH RACK
5.5"
� I
WATER LEVEL _
5.5"
I
PRIOR TO INSTALLATION, MANUFACTURER SPECIFICATIONS OF FILTER MEDIA SHALL BE REVIEWED TO ENSURE THAT DISCHARGE FROM j(
FILTER MEDIA SHALL MEET OR EXCEED THE PROVISIONS OF THE CLEAN WATER ACT.
ENSURE THAT PUMP PRESSURE DOES NOT EXCEED FILTER MEDIA PRESSURE RATING. T ❑L ,1dOM RISER
TRASH RACK SHALL BE INSPECTED
FILTER MEDIA MAY BE, BUT NOT LIMITED TO, SAND MEDIA FILTRATION DEVICES, RATED FILTER FABRIC PERIODICALLY AND ANY DEBRIS ON
BAGS OR POLYMER BASED DEWATERING PRACTICES. THE TRASH RACK IS TO BE REMOVED
fiL
LI I PUMP STRAINER SHALL NOT 8E IN CONTACT WITH BOTTOM OF POND. AND PROPERLY DISPOSED OF.
-IIIII' BMP POND DEWATERING -" SLOW POINT RISER RISER TRASH RACK DETAIL
SCALE: N.T.S.
SEEDBED PREPARATION: STORMWATER \ �/
1. CHISEL COMPACTED AREAS AND SPREAD TOPSOIL THREE INCHES DEEP OVER ADVERSE SOIL CONDITIONS, IF AVAILABLE. MANAGEMENT
2. RIP THE ENTIRE AREA TO SIX INCHES DEER EASEMENT
3. REMOVE ALL LOOSE ROCK, ROOTS AND OTHER OBSTRUCTIONS, LEAVING SURFACE REASONABLY SMOOTH AND UNIFORM. / r
4. APPLY AGRICULTURAL LIME, FERTILIZER, AND SUPERPHOSPHATE UNIFORMLY AND MIX WITH SOIL (SEE SEEDING MIXTURE). FES
INV=132.4
5. CONTINUE TILLAGE UNTIL A WELL -PULVERIZED, FIRM, REASONABLY UNIFORM SEEDBED IS PREPARED FOUR TO SIX INCHES DEER
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.
RIP RAP /
B. INSPECT ALL SEEDED AREAS AND MAKE NECESSARY REPAIRS OR RE-SEEDINGS WITHIN THE PLANTING SEASON, IF POSSIBLE. IF -� i EMERGENCY
STAND SHOULD BE MORE THAN 60% DAMAGED, RE-ESTABLISH FOLLOWING THE ORIGINAL LIME, FERTILIZER AND SEEDING RATES. SPILLWAY / 1 O, -15„ HDPE
9. CONSULT S&EC ENVIRONMENTAL ENGINEERS ON MAINTENANCE TREATMENT AND FERTILIZATION AFTER PERMANENT COVER IS (c� j O%
ESTABLISHED.
LANDSCAPE NOTES: TOP of uTLET CONTROL
ALL LANDSCAPING SHALL BE IN COMPLIANCE WiTH THE NCDEQ BMP REQUIREMENTS. EMBANKMENT
1 STRUCTURE
ELEV=134 0 / � / ©a .� 1 �
3' MIN
6" TOPSOIL ABOVE
6" CLAY LINER
ON LITTORAL SHELF
1- 3
- � 1
6
6FT LITTORAL 1
SHELF ;
1= i
INV=132.!
1�0 _/_1
� zo i ELEV=129.5 --�
1
4' MIN. ASTM C-923 SEAL
KEY BETWEEN BARREL & RISER.
RISER BASE TO BE FILLED
WiTH CONC. TO INVERT OF
BARREL
8"XS"X1"X12" LONG ANGLE (6 TOT. REQUIRED) TO ANCHOR RISER TO _
BASE. PROVIDE 2-3/4" A307 BOLTS FROM ANGLE TO RISER AND
FOREBAY TOP ELEV= 134.0
WIDTH AT TOP = 2.0 FT
" DIA. HOLE DRILLED -J
INTO BOTTOM CAP
PVC DRAIN OUTLET
NOTE: PUMPS SHALL BE USED TO DRAIN
FOREBAY BOTTOM THE FOREBAY WHEN NECESSARY. REFER TO DETAIL
THIS SHEET FOR DEWATERING REQUIREMENTS.
ELEV=129.0
NORMAL POND ELEVATION
FOREBAY ENTRANCE SHALL BE I �`!
DEEPER THAN FOREBAY EXIT BOTTOM OF SEDIMENT
STORAGE
ELEV=128.0
FOREBAY 6" TOPSOIL FOR ALL
AREAS ABOVE THE
NORMAL POND ELEVATION
SHALLOW LAND ZONE
HERBACEOUS PLANTS SHALLOW WATER ZONE
HERBACEOUS PLANTS
POND
(NORMAL POOL)
1
6
TYPICAL LITTORAL SHELF VEGETATION DETAIL
SCALE: N.T.S.
SCIENTIFIC NAME COMMON NAME PLANTING ZONE QUANTITY NURSERY CONTAINER TYPE SPACING PLANTING SEASON
Jancus effusus
Soft Rush
SHALLOW WATER
51
PEAT POT
6' O.C.
SPRING/SUMMER
Iris virginica
Blue Flag Iris
SHALLOW WATER
51
PEAT POT
6' O.C.
SPRING/SUMMER
Schoenoplectus tobemoemontani
Eupotoriadelphus moculatus
Soft Stem Bulrush
Spotted Trumpetweed
SHALLOW WATER
SHALLOW LAND
51
51
PEAT POT
PEAT POT
6' O.C.
6' O.C.
SPRING/SUMMER
SPRING/SUMMER
Eupatorium purpureum
Joe-Pye Weed
SHALLOW LAND
51
PEAT POT
6' O.C.
SPRING/SUMMER
Rhynchospora colorata
Starrush Whitetop
SHALLOW LAND
51
PEAT POT
6' O.C.
SPRING/SUMMER
TYPICAL LITTORAL SHELF PLANTING SCHEDULE
SPILLWAY CREST
ELEV.=133.25 TOP OF EMBANKMENT ELEV = 134.0
4'
2'
B
8" 1'
3
1� LEVEL III I 3
SPILLWAY III 1
CREST III
III
COMPACTED
SUBGRADE III III
CLASS B RIP RAP II I'I
I I
RIP RAP SPILLWAY CLASS B RIP RAP -
LANDSCAPE CONTRACTOR SHALL PROVIDE ATWO-YEAR WARRANTY FOR BMP PLANTING SURVIVAL/REPLACEMENT. / a U aq\ INV.OUT=132.5 , - \ STORMWATER MANAGEMENT NOTES:
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 / ` \�/ OS�o \ No
p / / 1. THE DEVELOPER OR HIS AGENT SHALL CONTACT THE DESIGN ENGINEER WHEN THE
REPLACED. 0,001 O \ - ✓ \ BEST MANAGEMENT PRACTICE(S) ARE CONSTRUCTED AND ABOUT TO BECOME
ESTABLISHMENT PROCEDURES, SUCH AS CONTROL OF INVASIVE WEEDS, ANIMAL AND VANDAL DAMAGE, MULCHING, RE -STAKING, WATERING, AND EPl - / D U1 O q10 q tj O \ OPERATIONAL SO A FINAL INSPECTION CAN BE PERFORMED TO DETERMINE
MESH OR TUBE PROTECTION REPLACEMENT, SHALL BE IMPLEMENTED TO THE EXTEND NEEDED TO ENSURE PLANT SURVIVAL. STAKING MUST BE Up -' O a \ ` ` -SHORT STOP COMPLIANCE WITH THE APPROVED PLAN CAN BE PERFORMED.
REMOVED AFTER ESTABLISHMENT APPROXIMATELY 12 MONTHS), TO PREVENT GIRDLING (STRANGLING) OF ALL WOODY PLANTS. q <%q \
( ) O a " "Q�O � FFE j ' 2. ANNUAL MAINTENANCE INSPECTION AND REPORT REQUIRED -THE OWNER OF A
SOD WITHIN BMP AND SURROUNDING AREAS TO BE BERMUDA OR CENTIPEDE GRASS. U U ap y O\ - - _ / 6' \ PERMITTED STRUCTURAL STORMWATER BMP/CONTROL SHALL ANNUALLY SUBMIT A
GRASS OR WILDFLOWER SEED MUST BE APPLIED AT THE RATES SPECIFIED BY THE SUPPLIERS. IF PLANT ESTABLISHMENT CANNOT BE ACHIEVED MAIN PON i q a O / MAINTENANCE AND INSPECTION REPORT FOR EACH BMP TO THE STORMWATER
WHit SEEDING BY THE TIME OF SUBSTANTIAL COMPLETION OF THE STORMWATER FACILITY PORTION OF THE PROJECT, THEN THE CONTRACTOR _ \ U /iT' I I ADMINISTRATOR. ANNUAL INSPECTIONS SHALL BEGIN WITHIN ONE YEAR OF THE.
SHALL PLANT THE AREA WITH WILDFLOWER SOD, PLUGS, CONTAINER PLANTS, OR OTHER MEANS TO COMPLETE THE SPECIFIED PLANTING AND VOLUME=5,681CF \ ,� a ,�v, \ / �' RECORDATION OF ANY DEED(S) SHOWING STORMWATER BMPs/CONTROL
PROTECT AGAINST EROSION BEFORE WATER IS ALLOWED TO ENTER THE STORMWATER BMP FACILITY. / a O gpX7 \ /J�. !� / 1 STRUCTURES.
ALL MATERIALS SHALL BE ACQUIRED FROM AN APPROVED NCDEQ PLANT VENDOR. PLANT MATERIAL SHOULD BE PURCHASED FROM A LOCAL \� \ q� aq U / �^ \ 3. UPON C014PLET1UN OF THE PROJECT, AND BEFORE A CERTIFICATE OF OCCUPANCY
SOURCE TO ENSURE SURVNABIUTY. LOCAL VENDORS FOR THIS SITE INCLUDE: MAI
- CILL IDE NATIVE PLANT NURSERY 919-662-5566 O a�2 \ / SHALL BE GRANTED, THE ENGINEER OF RECORD SHALL CERTIFY THAT THE
- GROWING WILD NURSERY 910-259-6361 POND a0ga O \ / / / COMPLETED PROJECT IS IN ACCORDANCE WITH THE APPROVED STORMWATER
- NC FOREST SERVICE 919-731-7988 AREA / \ p 41 \ % / MANAGEMENT PLANS AND DESIGNS.
- PLANT DELIGHTS NURSERY 919-772-4794 O Q cl' \ /
- TARHEEL NATIVE TREES 919-553-5927 S� q� cf?S �\_ - / 4. A FINAL INSPECTION OF THE SITE AND STORMWATER MANAGEMENT BMP/CONTROLS
IMMEDIATELY AFTER THE WET DETENTION BASIN IS ESTABLISHED THE PLANTS ON THE VEGETATED SHELF AND PERIMETER OF THE BASIN SHOULD O `� O�% 1 �' TO BE SCHEDULED WiTH AND COMPLETED BY THE PROJECT ENGINEER.
N SOD AREAS ABOVE / o w o
BE WATERED ;TWICE WEEKLY IF NEEDED UNTIL THE PLANTS BECOME ESTABLISHED (COMMONLY SIX WEEKS) \ �- O i, I _- ._ __.-
NORMAL POOL O q .pp 5. NCDEQ AND THEIRASSIGNSHAVE RIGHT TO ACCESS THE STORAIWATER
THE
PORTION OF THE WET TATE SHELF.
POND SHOULD BE FERTILIZED AFTER THE FIRST INITIAL FERTILIZATION THAT IS REQUIRED TO ESTABLISH ` \ CONTROL(s) FOR INSPECTIONS OR MAINTENANCE AS NECESSARY.
THE PLANTS ON THE VEGETATED SHELF. ELEVATION - � � S, �a I
r£� 1 _ / r 6. THE ENGINEER'S CERTIFICATION OF COMPLETION WILL BE REQUIRED PRIOR TO THE
Ln `J FINAL PLAT OR CERTIFICATE OF OCCUPANCY. THE STORMWATER CONTROL IS TO
-LANDSCAPING NOTES: 9�'/ \Ua> \ / BE INSPECTED TO ENSURE IT IS FUNCTIONING AS DESIGNED AND HAS FULL
1. CONTRACTOR SHALL COMPLY WITH ALL APPLICABLE CODES AND ORDINANCES REGARDING LANDSCAPING. LITTORAL SHELF \ q�j O O \ a \ O �i I� DESIGN VOLUME PRIOR TO ISSUANCE OF THE FINAL CERTIFICATE OF OCCUPANCY.
2. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO ESTABLISH A HEALTHY STAND OF GRASS ON ALL SEEDED AREAS. AREA=1,215SF \ O\O it, THE PROPERTY OWNER IS RESPONSIBLE FOR MAINTAINING THE STORMWATER
REFER TO DETAIL \ q O a Op a\ OREBAY CONTROLS(s) ACCORDING TO THE APPROVED MAINTENANCE PLAN AND DIRECTION
3. CONTRACTOR SHALL PROVIDE NATURAL TOPSOIL THAT IS FERTILE, FRIABLE, WITHOUT MIXTURE OF SUBSOIL MATERIALS, AND ,
OBTAINED FROM A WELL DRAINED, AVAILABLE SITE. IT SHALL NOT CONTAIN SUBSTANCES WHICH MAY BE HARMFUL TO PLANT FOR PLANTINGS �/ Sir/ \ U / r \\ \ WEIR OF NCDEQ
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 A HINDERANCE TO PLANTING OPERATIONS. TOPSOIL
SHALL CONTAIN AT LEAST 4-6% ORGANIC MATTER BY WEIGHT AND HAVE A PH RANGE Or 5.5 TO 7.0. \ / / / / p
4. CONTRACTOR SHALL BE RESPONSIBLE FOR THE WATERING AND THE MAINTENANCE OF ALL LANDSCAPED AREAS UNTIL THE LATER STORMWATER , FOREBAY / / STORMWATER MANAGEMENT DESIGN
OF; (a) THIRTY (30) DAYS FOLLOWING THE PLANTING OF THE GRASS AND SHRUBS, OR (b) THE DATE THAT STORE OPENS FOR \ / / - _ (1
BUSINESS TO THE PUBLIC. CONTRACTOR SHALL ALSO BE RESPONSIBILITY FOR THE SURVIVAL OF THE BMP PLANTING MATERIALS MANAGEMENT �� \ \ /s WET DETENTION POND
DURING THE TWO-YEAR WARRANTY PERIOD AND SHALL REPLACE ALL PLANTS THAT DO NOT SURVIVE AT THE END OF THE FIRST EASEMENT \ C1'
YEAR AND AT THE END OF THE SECOND YEAR OF THE WARRANTY PERIOD. \ \ \\ / i RIVER BASIN: CAPE FEAR
/ / 1 i ' RECEIVING STREAM: ROCKFISH CREEK
5. CONTRACTOR TO VERIFY QUANTITIES PRIOR TO COMMENCING WORK. �❑ \ / x STREAM INDEX: 18-31-(18)
6. ANY DISTURBED AREAS NOT SCHEDULED FOR HARDSCAPE, PLANTINGS, OR MULCH SHALL BE SEEDED LAWN. REFER TO SITE PLAN CLASSIFICAITON: B
FOR LOCATION OF AREAS TO BE SODDED. , ~ HOC: 03030004
7. NO PLANT SUBSTITUTIONS ARE PERMITTED WITHOUT WRITTEN APPROVAL OF THE OWNERS REPRESENTATIVE. FOREBAY INLET FLUME WIT OZ-i£ i•
8. FOR NEW PLANTING AREAS, REMOVE ALL PAVEMENT, GRAVEL SUB -BASE AND CONSTRUCTION DEBRIS; REMOVE COMPACTED SOIL VOLUME=1 O28CF , RIP -RAP APRON/ POND DESIGN SUMMARY
AND ADD 18" NEW TOPSOIL, OR TILL AND AMEND THE TOP 18" OF EXISTING SOIL TO MEET TOPSOIL/PLANTING MIX STANDARDS I / DRAINAGE AREA TO POND: 1.15 ACRES
FOR TREES. i O SITE IMPERVIOUS AREA TO POND: 0.75 ACRES
9. ADJUST TREE PLANTING LOCATIONS TO AVOID UNDERGROUND UTILITIES. PLANT 15' FROM ALL UNDERGROUND UTILITIES (SEWER \ - OFF -SITE DESIGN IMPERVIOUS AREA TO POND: 0.0 ACRES
AND STORM DRAINAGE, GAS, WATER, PHONE, AND ELECTRICAL LINES.) �J GRAPHIC SCALE TOTAL DESIGN IMPERVIOUS AREA TO POND: 0.75 ACRES
20 0 - 10 20
1111,j,,! I�1i�jll PRE -DEVELOPED' POST -DEVELOPED POST DEVELOPED THROUGH POND
DRAINAGE AREA: 1.15 AC 1.15 AC
STORMWATER MANAGEMENT SYSTEM DETAILS STORMWATE \ CURVE NUMBER: 74.6 89.7
1 MANAGEMENT 1 INCH = 20 FEET TIME OF CONCENTRATION: 10 MIN 5 MIN
NOT TO SCALE \ EASEMENT , 1.0" STORM EVENT: 0.282 CFS 0.008 CFS
i PLAN VIEW
�/� , 1-YEAR STORM EVENT: 1.539 CFS 3.765 CFS 1.387 CFS
Z 2-YEAR STORM EVENT: 2.286 CFS 4.828 CFS 1.939 CFS
10-YEAR STORM EVENT: 4,526 CFS 7.805 CFS 4.526 CFS
100-YEAR STORM EVENT 8.855 CFS 12.62 CFS 9.843 CFS
I
<
SPILLWAY SECTION
1.0'
A
1'0
TOP OF
EMBANKMENT
ELEV=134.0
SPILLWAY
B ELEV=133.75
SPILLWAY
A
6
'BASIN
5 FT
0.25 FT
PROPOSED RIP
RAP APRON
OPERATION & MAINTENANCE
BMP element:
Potential problem:
How I will remedlate the problem
The entire BMP
Trash/debris is present
Remove the trash/debris
ePerimeter n e we
etention basin
Areas of bare soil and/or
erosive gullies have formed
Regrade the soil If necessary to
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
long
anon vegetation a a height
of approximately six inches.
e Inlet ev ce: pipe or
wale
e pipe s c ogge ,
Unclog e pipe. Dispose o e
sediment oN-site,
The pipe Is cracked or
Replace the pipe.
otherwise damaged
Erosion is occurring in the
Regrade he swale if necessary
Swale.
to smooth it over and provide
erosion control devices such as
reinforced turf matting or riprop
to avoid future problems with
erosion.
The foreboy
Sediment as accumul ed to
o depth greater than the
ears or he source of e
sediment and remedy the
original design depth for
problem if possible. Remove the
sediment storage.
sediment and dispose of it in a
location whore it will not cause
impacts to streams or the BMP.
Erosion as occurs .
Provide additional eros on
protection such as reinforced turf
matting or riprop if needed to
prevent future erosion roblems.
e s are present.
Remove a woods, pre era y y
hand. If pesticide Is used, wipe it
on the plants rather than
spraying.
The vegetate shelfBestprofessional
practices
show that pruning is needed
rune according o e
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 ti is necessa .
Woods are present.
Remove the woods, pro ferably by
hand. If pesticide is used, wipe it
on the plants rather than
spraying.
The main treatment area
Sediment as accumulated to
Searchforte source o the
a depth greater than the
sediment and remedy the
original design sediment
problem if possible. Remove the
storage depth.
sediment and dispose of it in a
location where it will not cause
Impacts to streams or the BMP.
ga gro covers over
of the area.
Consulta professionalo remove
and control the al al rowth.
Cattails p rogmites or other
Remove e p an s by w ping
invasive plants cover 50% of
them with pesticide (do no
the basin surface,
IN
T e embankmentShrubs
have started to grow
on the embankment
Rves rubs immedi ely.
Evidence of muskrat or beaver
Use traps to remove muskrats
activity is present.
and consult a professional to
remove beavers,
tree has started to grow on
Consult a dam safetyspecialist
the embankment.
to remove the tree.
An annual innspectlon by an
Make all needed repairs.
appropriate professional shows
that the embankment needs
repair. if applicable)
The outletdevice
Clogging has occurred.
can outa outlet ev ce,
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
outlet.
Contact the local NC Division of
Water Quality Regional Office, or
the 401 Oversight Unit at
H
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CO
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CONSULTANT:
Triangle Site Design, PLLC
4004 Barrett Drive
Suite 101
Raleigh, NC 27609
[phone]
mlowder®trionglesitedesign.com
NC License #P-0619
*'0%% %%. eeea,"
A R '+
C SEAL I,
�•' 244j4ctiGl° �
we.Eey�O`®�t
OWNER/DEVELOPER:
Lee Humphrey
Double D Engineering, PLLC
150 S. Page Street
Southern Pines, NC 28387
910-684-8646 (Office)
910-206-1808 (cell)
[e-mail]
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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.
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Drawn
Checked
Approved
Project No: 038007
Date: December 31, 2019
Title
STORMWATER
CONTROL MEASURE
DETAILS
Sheet No.
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