SW8131007_APPROVED PLANS_20140102

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 13 \o o-)
DOC TYPE
❑ CURRENT PERMIT
® APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
2 o\ y o 10 2
YYYYMMDD

LOCATION MAP
NOT TO SCALE
Z11s>E
HOLLY RIDGE
24
CAMP DAMS
INQUSMAL PARK NC
OR 2250 PG 293
MB 46 PG 120
ZONING = U
._LO
9 83 '
y�000Qa aoti e e `►`
�
SF SF
TD
/ PROPERTY
\ by DUSTING CONCRETE TO \_ CB 23M FIG 291
BE REMOVED i MB 40 PG 129
�b> MB 40 PG 130
ti16,
0
STOCKPILE LOCATION\ B EDI �16
s3� p D
I
�I�OIOj�••'Ipj�•pi �
COMPACTED FILL OR
/-..,:....
GRAVEL, EXTENSION
OF FABRIC AND WIRE
INTO THE TRENCH
NOTE:
SEE NARRATIVE
FOR MORE DETAIL.
ISOMETRIC VIEW FILTER
FABRIC
FILTER
EXTENSION OF \
FABRIC
FABRIC AND WIRE
BACKFILL
INTO THE TRENCH
MINIMUM 8"
THICK LAYER
COMPACTED
OF GRAVEL
FILL
8"MINIMUM%
8"MINIMUM
V-TRENCH
24" BELOW
14"MINIMUM 4"MINIMUM
SEC77ON SECTION
SF SEDIMENT FENCE ( SILT FENCE )
Practice 6.62
NTS
PUBLIC ROAD
6" MINIMUM
THICKNESS
2"-3" COARSE
AGGREGATE
NOTE: SEE NARRATIVE
FOR MORE DETAIL.
GRAVEL CONSTRUCTION
ENTRANCE, WIDTH
AS REQUIRED
cE, TEMPORARY GRAVEL CONSTRUCTION
LEGEND
EXISTING BOUNDARY
WETLANDS
- ADJACENT PROPERTY LINES
EXISTING EASEMENT
SF'
1 SILT FENCE
T3,
TEMPORARY DIVERSION
CONSTRUCTION ENTRANCE
LIMITS OF DISTURBANCE
N07E WELL
L SOIL STABIUZATION SHALL BE ACHIEVED ON ANY AREA OF A 91E WHERE
LAND ACTIVITIES HAVE IEMPORARILY CEASED ACCORDING TO THE FOLLOIfNG
SCHEDULE
Q ALL MW IER DIKES SWALEx PERWIEIER SLOPES AND ALL SLOPES
STEEPER THAN 1.1 SHALL BE PROVIDE! 700CRARY OR PERMANENT
STAWZ.4 ION W7H GROUND COVER AS SOON AS PRACTICABLE BUT IN
ANY EVENT WITFNI 7 CALENDAR DAYS FROM LAST LAND-DISTUMBING
ACTIVITY.
0) ALL OTHER DISTURBED AREAS SHALL BE PROVWIED MFWARY OR
PERMANENT STANUZARON WIN GROUND COVER AS SOON AS
PRACTICABLE BUT IN ANY EVENT W70 14 C49M DAYS FROM UST
LAND -DISTURBING ACTIVITY.
2 INS PLAN 70 BE UTILIZED AND REVIEWED ONLY N CINJW WN
WIN THE WdTIEN NARRATIVE; NFINCH IS AN NTEGIRL PART OF
INS EROSION AND SEDIMENT CONTROL PLAN.
d. ALL SLOPES SHALL BE 31 OR FLATTER.
4. ALL ROOF DRAMS TO BE DMC70 TO STORM DRAINAGE
SYSIL71.
5. OLIO AC NETLANOS EXIST ON 97E
6. BOUNDARY SURVEY PERFORMED BY LAMER SURVEYING COMPANY
7. TOPOGRAPHIC SURVEY PERFORMED BY LANIER SURVEYING COMPANY
VER71CAL DATUM USED - NAND 88
a WETLANDS WERE DELINEATED BY SOIL & ENVIRONNSTAL
CONSULTANTS PA
9. GRASSED CHANNEL 1 & 3 70 BE LINED WIN EXC%ESIOR MAT77NG OR
EQUIVALENT
10. ALL MATERIAL 70 MEET MAW M NCDOT SPECIFEA7WN5
11. CONTRACTOR TO TAKE GREAT CARE MOLE EXCAVATING /4 THE VICINITY OF
THE AT&T FIBER OPTIC LINE ANY DAMAGE INCURRED 70 LXISiNG
UTILITIES NaVDWG THE FIBER OPTIC LINE SHALL BE ➢E CONTRACTOR'S
RESPONSIBILITY TO REPAIR OR REPLACE.
EDGE E HOLLIS
& wf. LINDA HOWS
DB 729 PG 782
LOT 6
MIT 20 FIG 6
ZONING = R-20
= 6170
CONSTRUCTION SCHEDULE -
MAINTENANCE PLAN
I.
OBTAIN APPROVAL Or PLAN AND ANY NECESSARY PERMITS AND HOLD A
1.
ALL MEASURES TO BE INSPECTED MEEKLY AND AFTER ANY RAINFALL EVENT AND NEEDED
PRE-OWS71TUCTION CONFERENCE PRIOR 70 COMMENCING ANY WORK
REPAIRS MADE AwMATIlY.
2
FUG WORK LIMITS AND STAKE -CUT PARKING LOT AND STORM DRAINAGE
2
SEDIMENT TO BE REMOVED FROM SWALES *0 THEY ARE APPRO1uMAlay 5OX FILLED OR
STRUCTURES FOR PRELIMINARY GRADING
SEDIMENT LEVEL IS WITH 1' OF TOP OF DITCH BANK.
J.
INSTALL GRAVEL CONS7RUCROW ENTRANCES
3
SEDIMENT TO BE REMOVED FROM BEHIND ANY SILT FENCE AND INLET PR07ECIM DEVICES
WHEN IT BECOMES 0.5' DEEP. FENCING AND WLET PROTECTION TO BE REPAIRED AS NEEDED TO
4.
INSTALL SILT FENCING PRIOR TO ROUGH GRADING THE REMAINING SITE AND ANY
MANTAW A BARRIER.
S70CKPIUNG OF MATERIAL AND TOPSOIL NECESSARY
4.
ALL SEEDED AREAS SHALL BE FERTILIZED, MULCHED, AND RE -SEEDED AS NECESSARY,
5.
CONSTRUCT SWALES, TEMPORARY DIVERSION CHANNEL% SEDINEtIT TRAPS & BASINS
ACCORDING TO SPEOICATIONS FRONDED.
(WaUONG OUTLET STRUCTURE) AND ANY DINER SEDIMENT CONTROL PRAC71ES SHOMN,
PRIOR TO ROUGH GRADING ROADWAYS AND SITE, STOCKPILING 70FWL AS NECESSARY.
&
CONSTRUCTION ENTRANCE TO BE MAINTAINED IN SUCH A MANNER AS TO PREVENT MUD OR
SEDIMENT FROM LEAVING Off CONSTRUCTION SITE PERIODIC TOP DRESSING WIN 2-INCH STONE
6.
INSTALL UTILITIES IN ROADWAY, ESTABLISH FINAL ROAD GRADES AND STABILIZE ROAD Will
MAY BE REWIRED. WSPECT AFTER EACH RAINFALL AND IMMEDIATELY REMOVE ALL
STONE BASE COURSE
OBJECTIONABLE MATERIALS SKILLED, WASHED, OR 7RACKED ONTO PUBLIC ROADWAYS,
7.
FINAL GRADE INSTALL NON -MUNICIPAL U77U71ES AS NEEDED, AND VEGETATIVELY
6.
INSPECT TEMPORARY SEDIMENT TRAPS AFTER EACH Poo OF SIGVIICANT RAINFALL REMOVE
STABILIZE AREAS NHERE BUILDING CONSTRUCTION IS NOT IMMINENT.
SEDIMENT AND RESTORE THE TRAP DO 17S ORIGINAL DIMENSIONS WHEN THE SMOT HAS
ACCUMULATED TO 1/2 IHE DESIGN DEPTH OF THE TRAP. PUCE THE SEDIMENT THAT IS
8.
ALL EROSION AND SEDIMENT CONTROL PRACTICES ARE TO BE INSPECTED MEEKLY AND
REMOVED IN THE DESK,TNA7ED DISPOSAL AREA AND REPLACE THE CWTAINNA7ED PART OF THE
AFTER ANY RAINFALL, AND REPAIRED AS NECESSARY.
GRAVEL FACING LACK THE STRUCTURE FOR DAMAGE FROM EROSION O PIPING
PERIODICALLY CHECK THE DEPTH OF TIME SPILLWAY 70 ENSIWE IT IS A MINIMUM OF 1.5 FT
9.
UPON COMPLETION O CONSTRUCTION, THE ROADWAY IS TO BE PAVED AND ALL AREAS
BELOW THE LOW POINT OF THE EMBANKMENT. IMMEDIATELY FILL ANY SETRfMEHT OF THE
PERMANENTLY VEGETATIVELY STABNRED,
EMBANKMENT TO SI.M7LY ABOVE DESIGN GRADE ANY RIPRAP DISPLACED FROM THE SPILLWAY
MUST BE REPLACED BMEW7aY. AFTER ALL SEDIMENT PRODUCING AREAS HAVE BEEN
10.
7EWPORARY DIVERSIONS 1-4 TO BE CONVERTED 7O GRASSED SWALES ONCE CON7RII/IWG
PERMANENTLY STABILIZED, REMOVE THE SIRUCIURE AND ALL UNSTABLE SEDIMENT. SYDOW
DRAINAGE AREAS ARE STA&LIZED.
THE AREA TO BLEND MITI THE ADJOINING AREAS AND STABILIZE PROPERLY.
It.
AFTER 577E STABIUZ47M TEMPORARY MEASURES ARE TO BE REMOVED.
7.
INSPECT SXIIMER SEDIMENT BASINS AT LEAST RMY AND AFTER EACH 9GMFICANT
(ONE-HALF INCH OR GREATER) RAINFALL EVENT AND REPAIR IMMEDIATELY. REMOVE SEDIMENT
AND RESTORE THE BASIN 7017S ORIMAL DIMENSIONS WHEN SEDBIENT ACCUMULATES TO
ONE-HALF THE HEIGHT OF THE FIRST BAFFLE PULL THE SKIMMER TO ONE ME SO THAT THE
VEGETATIVE PLAN -
SEDIMENT UNDERNEAIH IT CAN BE EXCAVATED. EXCAVATE THE SEDIMENT FROM THE ENTIRE
BASIN, NOT JUST AROUND THE SKIMMER OR THE FIRST CELL MAKE SURE VEGETATION
1. Permanent vegetation to be established in accordance with
GROWING N THE BOTTOM O TIME BASIN DOES NOT HOD DOWN THE SKIMMER. SEDIMENT TO
"North Carolina Erosion and Sediment Control Planning and
BE REMOVED FROM SED&I NT BASINS WHEN A MINIMUM Or 5OX O VOLUME HAS BEEN FILLED.
Design Manual", Section 6.11, latest version. See Sheet ECP6.
REFER TO CHART FOR BASIN DEPTHS
8.
REMOVE SEDIMENT FROM BEHIND BAFFLES ONCE ACCUMULATION HAS REACHED 1/2 HEIGHT Or
THE FIRST BAFFLE REPLACE BAFFLE PROPERY IF PEE COLLAPSE 7EAR, DECOMPOSE OR
BECOME NBFECTIVE
9.
REFER TO NO LOTS 'EROSION AND SEDIMENT CONTROL PLANNING AND DESIGN MANUAL' FOR
L
ADDITIONAL MANIENANCE REQUREMEl7S FOUR EACH EROSION CONTROL DEVICE
FT DRAINAGE ESMT
1
'y4v'O�Bi
20 FT DRAINAGE ESMT
TG =
IF =
7D 3 70 BE LNNED NTH EXOLSIOR MATTING OR
EDDIE E BOLUS
& wf. LNDA HOWS
DB 2222 PG 519
LOT 5
MB20FIG 6
ZONING = R-20
KURT R. HUFF
OR 2275 PG 992
LOT 2
to MB 40 PG 130
�s • ZONING = R-20
TG =
IE _
(DESIGNED BY O
= oa ra
= 5170
�T
TO =
66 IF 24' RCP _
s = 0mt� /
/ Op
60.0 ,h,
RIPRAP i h1 m 63 P /
/62 i
�6
PLANNED EROSION AND SEDIMENT CONTROL PRACTICES -
01. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
0 Practice 6.06
Shall be installed at the entrances to the project
from an existing roadway. Drainage should be away from
the road and erosion will be controlled with downstream
practices. During wet weather It may be necessary to wash
truck tires at these locations.
2. LAND GRADING
Practice 6.02
Grading should be limited to areas as shown on the
Plans. Cut and fill slopes shall be 3:1 or flatter except
where specifically indicated. Care shall be taken during
land grading activities not to damage existing trees that
are identified as "to be preserved".
0 SF' J. SEDIMENT FENCE
Practice 6.62
Sediment fencing should be installed as shown on the
Plan, to delineate and protect wetlands and specified areas,
and around any temporary stockpile areas as necessary to
Prevent any graded interior areas from eroding onto adjacent
lands or roadway, or into inlets, or as directed by Engineer
or New Hanover County Erosion Control personnel.
GC 4. GRASS -LINED CHANNELS
Practice 6.30
All overflow swales to be raded to design
configuration seeded, and stabipized if necessary with
temporary straw -net liners to collect and convey site water
as shown on Plan. After final project stabilization, swales to
be re -graded and cleaned of siltation as needed to establish
original design contours for stormwater conveyance.
OOp 5. OUTLET STABILIZA7ION
Practice 6.41
Riprop aprons will be located at the downstream end of
all discharge pipes to prevent scour.
6. CONSTRUCTION ROAD STABILIZATION
Practice 6.80
Upon reaching final grade and after utilities have been
installed, roadway areas are to be stabilized by placing
sub -base course of approved 4" marl stone or 6" ABC, as shown
In the typical street cross-section detail on the Plan, to
reduce erosion and dust during the remainder of building
construction.
Sfifi 7. TEMPORARY SEDIMENT TRAP
Practice 6.60
Sediment traps are to be installed as indicated on plan
at the downstream end of swales as shown. Sediment traps to be
converted to permanent check dams where applicable upon
completion of construction.
1p B. INLET PROTECTION
Practice 6.52
Storm sewer inlet barriers of silt fencing or block and
gravel inlet protection are to be constructed to help
prevent sediment from entering the storm sewer system.
0 09. TEMPORARY DIVERSIONS
Practice 6.20
A temporary ridge or excavated channel or combination
ridge and channel constructed across sloping land on a pre-
determined grade to protect work areas from upslope runoff and
to divert sediment -laden water to appropriate traps or stable
outlets.
SB 11. SEDIMENT BASIN
PRACTICE 6.61
The sediment basin is to be constructed first (see
Construction schedule) and is the primary practice to
Prevent sediment from leaving the site. Detailed design and
Spillway configurations are specified in the detail sheet.
SK 12. SKIMMER
PRACTICE 6.64
A sedimentation basin dewatering control device that withdraws
Water from the basins water surface, thus removing the highest
quality Water for delivery to the uncontrolled environment.
0 BF, 13. BAFFLE
PRACTICE 6.65
A porour barrier installed inside a temporary sediment trap,
skimmer basin or sediment basin to reduce the velocity and
turbulence of water flowing through the measure and to facilitate
the settling of sediment from water before discharge.
LICENSE # C-2710
COASTAL
SITE
DESIGN, PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
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APPROVED
01 1H'AROLINA ENVIRONMENTAL
nAN EMENT COMMISSION
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DATE: 10-11-13
A,
HORZ. SCALE 1' = 50'
VERT. SCALE.' N/A
DRAWN BY.• RLW
CHECKED BY.• HSR
PROJECT NO.: 13-0295
50 25 0 50 100 150
"t No. EC1 a,EC3
SCALE IN FEET.• 1 "- 50'

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INTERLOCKING BLOCK RETAINING WALL
KEYSTONE OR EQI11V. (D G NED BY OTTERS)
_ -_]W = 61.0- _ 6,11
62 BW=61.0 BW=6b
ALL SLOPES
4-1 MAMMUM
VAPoES 19.5,
FOREBAY VOLUME n
OF RECXLRED
WSEL = 6O5 STORAGE, TYPICAL
RIP RAP
OP
1.5_ 'm��'
3'min. BOTTOM = 560
o �—
'� o
NON WOVEN FILTER FABRIC UNDER RIP RAP
(TYPICAL AT ALL STORM OUTFALLS 70 POND)
NOT TO SCALE
OUTLET PIPE
OUILET
PROIEC77O N
AS ON PUNS
N07ES
1. TEMPORARY SKIMMER TO BE INSTALLED ON PRIMARY OUTLET STRUCTURE BOX
AND TO REMAIN IN PUCE UNTIL SITE IS PERMANENTLY STABILIZED PER NCOENMIUS
SEDIMENTATION AND EROSION CONTROL PERMIT. SEE SKINNER DETAILS FOR INSTALLATION.
2 GRADE WILL BE 20.1 ONLY IN FRONT OF OUTLET BOX. REMAINING SHELF SHOULD BE
lO 1. PP IS THE CENTER OF THE la SHELF.
3 RIP RAP TO BE PLACED AROUND THE PERIMETER OF OUTLET BOX.
4. 4 FT x 4 FT PRECAST CONCRETE BOX OR EQUIVALENT HAND BUILT
5. SKIMMER = 25' SKIMMER KITH 20' ORIFICE DIAMETER
TOP OF BOX AT
NONCE1
'W PLUG EL= 61.4 FpgSEMBLY C705SSKIMMER ECTIONON(K: ',MOVED 0WSEL=6O5INV = 60.5 INV-- 60.5
12' 2 FT SUMP
FOR CYEANWT
12'
1�2' CAP
TO REMAIN CAPPED UNTIL SKBIMER
IS REMOVED
POND BOTTOM
E1EV-- 55
I'roT'. •'�.. ::
26 FT
OF
alBANKMENT
ELEVATION =
10 FT
EMERGENCY SPILL WA Y
FRONT VIEW
1
a B W RAP W/ CEOTEX
NONWOVEN FILTER FABRIC
IS' HOPE (TO SMRROIIND ENITRE
OUTLET PIPE WIET STRUCTURE)
61BASE EL = 29.5
SECTION NEW
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
NOT TO SCALE
STORMWATER WET BASIN 'A'
40 FT
TOP OF EMBANKMENT
ELEVATION = 63.0
ELEV. = 62.5
EMBANKMENT TO BE RIP RAP
ARMORED AS NECESSARY
TO STABILIZE AND PREVENT
SCOUR AND WASHOUT
RETAINING WALL
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
THE FOLLOWING SPECS OF WETLANDS VEGET471ON ARE SUITABLE FOR
PLANTING ALONG HE 1O1 VEGETATED SHELF•
PLAFIIS SUITED FOR SHELF 7HAT'S UNDERWATER
- SAGITTARIA LANCFOUA (BILL TOME)
- SACITTARIA LATIFCIIA (DUCK POTATO)
- SAURURUS CRNUUS 0JZAIOT4A)
PLANTS SUITED FOR SHELF THAT'S ABOVE WATER
- ASCLERAS INCARNATA (SWAMP MILXNEED)
- CAREX TENERA (WILL SEDGE)
- CELONE GLABRA (WFI7E 7URTLEHEAD)
7 OF lO 1 SHELF UNDER WATER = Z816 SF / 200 = 14.1 X 50 = 705 PLANTS REWIRED
705 / 3 = 235 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE PLANTED
SF OF 1O 1 2fiV ABOVE WATER = 4148 SF / 200 = 15.7 X 50 = 785 PLANTS REWIRED
750 / 3 = 262 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE PUNTED
IF ONE OR MORE OF THE SUGGESTED SPECIES IS CLUVAHLASL& APPROPRIATE
WETLANDS VEGET4710N COMMON 70 THE COASTAL NORTH CAROLINA REGION
MAY BE SURSINUTED. SEE CH 9 OF STATE STORMWATER SUP MANUAL
FOR LIST OF OTHER RECOMMENDED WE7UWS PLANKS
WETLANDS PLANTINGS
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-- _--- --- E = 603 BW = 61.0 —
5 (X I RIPRAP 1.5 FT BEEP _ �—
�_ g� 10 FT EXISTING AT& 7NTY EASEYENT�o — PUCE NONWOVEN GEOTE FILM?
_ — FABRIC UNDER MPRAP—
�— SEE DETAIL (THIS SHEET)
�j �f—��APPROX LOCATION OF AT&T FIBER OPTIC LINE
I
_ - - - ---------- 60_ 1
NOTES /
1. ALL BUILDING ROOF DRAINS MUST BE DIRECTED INTO THE STORM ORAWAGE COLLECTION
SYSTEM OR INTO THE STREET/PARIING LOT.
2 PORTABLE PUMP TO BE USED TO DRAIN POND IN CASE OF aPGE/NCY. PUMP TO BE
10 5 0 10 20 30 PLACED ON TOP OF BEAM WITH SOM ATTACHED TO HOSE INLET AND COVERED WITH STONE___
HOSE OUTLET TO DRAIN ACROSS STABLE UPLAND AREA SUFFICIENT TO RESTRAIN EROSION.
3. POND SOSLOPES TO BE PERMANENTLY VEGETATIVELY STABKIED WIN CENTIPEDE SOD.
SCALE IN FEET. 1'— 10' 4. BASIN TO BE RECORDED IN A DRAINAGE EASEMENT
WELDED FABRICATED TRASH
RACK( W/SQUARE OPENINGS
SQUARE OPENINGS < 6'
4-0'
SEE DETAIL
c THIS SHEET o
i
« FOR
TRASH RACK
8' 4' 02' ORIFICE ASSETay
5'- 0' a
GRATE PLAN VIEW
BOX PLAN ME7r
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
NOTE COLLAR TO BE POURED AFTER 6'
RIDES ARE PUCE
REINFORCING
AS NECESSARY.
n z 5'.
s.
1.5'
MIN
WET BASIN
ANTI -SEEP COLLAR
NOT TO SCALE
SEE DETAIL
21' 5,
WINE
10.1 SHELF <J`:.F F
i,
Y'
VAPoES 35' ��
EMBANKMENT SECTION
NOT TO SCALE
LICENSE # C-2710 "
COASTAL
SITE
DESIGN,PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
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DATE.- 10-11-13
HORZ SCALE.- 1" = 10'
VERT SCALE: N/A
DRAWN BY.- RLW
CHECKED BY.- HSR
PROJECT NO.: 13-0295
Sheet No. EC2o,EC3

OP
Outlet Stab➢oration Structure
Specification 16.41 - Construction SpecBkaHans
1. Ensure that the subgrode for the liter and riprap follows the required Ines
and grades shown in the plan. Compact any fig required in the subgrade to
the density of the surrounding undisturbed material. Low areas in the
subgrode an undisturbed so➢ may also be fled by increasing the roW
thickness.
2. The riprap and grovel filter must conform to the specified grading limits
shown on the plans.
3. Fitter doth, when used, must meet design requirements and be propely
protected from punching or tearing during Installation. Repair any damage by
removing the roW and placing another piece of liter loth over the
damaged area. All connecting joints should overlap a minimum of I ft. If
the damage is extensive, replace the entire liter loth.
4. RiprW may be placed by equipment, but take care to avoid damaging the
liter.
5. The minknum thickness of the rota should be 1.5 tines the maximum stone
diameter.
6. ROM may be field stone or rough qua" stone. It should be had angina;
highly weather -resistant and weft graded
7. Construct the apron on zero grade with no ovefall at the end Make the top
of the riprop at the downstream and laud with the receiving area or slightly
below it
8. Ensure that the apron is properly aligned with the receiving stream and
prekraNy straight throughout its length. If a curve is needed to fit site
conditions place it in the upper section of the apron.
9. Immediately after construction, stdb➢ize all disturbed areas with vegetation
(Practice 6.10, Temporary Seeding, and 6.11, Permanent Seeding).
Maintenance
Inspect riprap outlet structures after heavy rains to see if any erosion around
or below the riprap has taken place or If stones have been dstodged.
Immediately make all needed repairs to prevent further damage.
SF
Sediment Fence ( t Fence)
Specification 6.62 - Construction Spadfications
MAiERiALS
1.Use a synthetic liter fabric or a pervious sheet of pdypropylanq nylon,
Polyester, or polyethylene yam, which is cartlfad by the manufacturer or
supplier as conforming to the requirements shown in Table 6.62b. Synthetic
filter fabric should contain ultraviolet ray inhibitors and stab➢izers to
provide a minknum of 6 months of expected usable construction life at a
temperature range of 0 to 120 F.
2Ensure that posts for sedsnant fences are
1.331b/)ineor ft steel with a minknum length of 4 ft. Mate
sure that steel posts have projections to facilitate fastening the fabric
3.For reinforcement of standard strength liter fdbrk, use wire fence with a
minimum 14 gauge and a maximum mesh spacing of 6 "a&
Table 6.62b
Specifications For Sediment Fence Fabric
Physical Property Requirements
F➢t"g Efficiency - 85% (mm)
Tense Strength at Standard Strength- 30 lb/lin In (min)
Extra Strength- 50 I1,111h in (min)
Slurry Flow Rate - a3 gal/sq ft/min (min)
CONSiRUC710N
1.Construct the sediment barrier of standard strength or extra strength
synthetic After fabrics.
ZEnsure that the height of the sediment fence does not exceed 18 Inches above
the grand surface, (Higher fences may impound volumes of water sufficient to
cause failure of the structure.)
3.Canstruct the inter fabric from a continuous roll cut to the length of the
barrier to avoid joints Ww joints are necessary securely fasten the After
loth only at a support post with ovedcp to the next post
4.Suppat standard strength liter fabric by wire most fastened securely to the
up slope side of the posts using heavy duty wire staples at least 1 Inch long
or tie wires. Extend the wire mesh support to the bottom of the trench.
5.111hen a wire mesh support fence is used, space posts a maximum of 8 ft apart.
Support posts should be driven securely into the ground to a minimum of 18
Inches
6.Extra strength After fabric with 6ft post spacing does not require wire mesh
support fence. Staple or wine the liter fabric diechy to posts
7.Excavate a trench approximately 4 inches wide and 8 Inches deep along the
proposed line of posts and upslape from the barer (figure 6.62a),
ILBacklM the trench with compacted so➢ or gravel placed over the titer
fabrc.
9.Do not attach liter idbric to existing trees.
Maintenance
Inspect sediment fences at least once a week and after each rainfall. Make any
required Man immediately.
Should the fabric of a sediment fence collapse, tear, decompose or become
kheffectiv% replace it promptly. Replace burlap every 60 days.
Remove sediment deposits as necessary to provide adequate storage
volume for the next rain and to reduce pressure an the fence. Take care to
avoid undermining the fence during demout.
Remove all fencing materials and unstable sedsnent deposits and bring the area
to grade and stabilize it after the contributing drainage area has been properly
stabilized
GC
Grass -Lined Channels
Specification 16.30 - Construction Specifications
1. Remove all trees brush, stumps and other objechmable moteid tram the
foundation area and dispose of properly.
2 Excavate the channel and shape it to neat Ines and dimensions shown on the
plans plus a 0.2 ft overeat mod the channel perineter to allow for bulking
during seedbed preparations and sod buildup.
3. Remove and properly dispose of all excess so➢ so that surface water may
enter the channel freely.
4. The procedure used to establish grass In the channel will depend upon the
severity of the conditions and selection of species. Protect the channel
with mulch or a temporary liner sufficient to withstand anticipated
velocities during the establishment period (Appendix 8.05).
Maintenance
During the establishment period, check grass -lined channels after every
rainfall. After grass is established, periodk ally check the channel; check it
after every heavy rainfall event. Immediately make repairs. It is particularly
important to check the channel outlet and all road crossings for bank stability
and evidence of piping or scour holes Remove all significant sediment
accumulations to maintain the designed carrying capacity. Keep the grass in a
health, vigorous condition at all tines, since it is the primary erosion
protection for the channel (Practice 6.11, Permanent Seeding).
Land 13rachn
Sp 16.02 - Construction Specifications
1.Construct and maintain all eroslal and sedimentation control practices and
measures in accordance with the approved sedimentation control plan and
construction schedule.
2Remove good topso➢ from areas to be graded and 1111*4 and preserve it for
use In finishing the grading of all critical areas.
3.Scorify areas to be topseled to a minimum depth of 2 inches before placing
topsoil (Practice 6.04 Topso➢ing).
tClear and grub areas to be filed to remove trees, vegetation, roots, or other
objectionable material that would affect the planned stab➢ity of the fill.
5.Ensure that f➢1 material is bee of brush, rubbish, rocks, logs, stumps
building debris and other materiels hopproprkrte for constructing stable
IAIs
6.Place all f➢1 in layers not to exceed 9 Inches in thidmess, and compact the
layers as required to reduce erosion, slippage settlement, or other related
problems
7.Do not Incoryorate frozen material or soft, mucky, or highly compressible
materiels Into 9 slopes
8.Do not place AN on a frozen foundation, due to possible subsidence and
slppage.
9.Keep diversions and other water conveyance measures free of sediment during
all phases of development.
mHande seeps or springs encountered doing construction in accordance with
approved methods (Practice 6.81, Subsurface Drain).
11.Permonently stabilize all graded areas Immediately after final grading is
completed an each area In the grading plan. Apply temporary stabilization
measures on all graded areas when work is to be interrupted or delayed for 30
waking days or longer.
12Ensure that topso➢ stocp➢es borrow oreas and spo➢ areas are adequately
protected from erasion with temporary and find stabilization measures including
sediment fencing and temporary seeding as necessary.
Maintenance
Periodically check all graded areas and the supporting erosion and sedvnentatian
control practices especially after heavy rainfalls Promptly remove all
sediment from dher*m and other water-disposd practices ff washouts or
brooks occur, repair them immediately. Prompt maintenance of small eroded areas
before they became significant gullies Is an essential part of an effective
erosion and sedsnentation control plan.
CE
jema= Gravel Construction Entrance
4icilicatian 16.06 - Construction Specitkat ins
1. pear the entrance and exit area of all vegetation, roots and other
objectionable material and properly grade it.
2 Place the grovel to the specific grade and dimansions shown on the plans and
smooth It
3. Provide drainage to carry water to a sedrnent trap or other suitable cutlet
4. Use geotexhle fabrics because they Improve stability of the foundation in
locations subject to seepage or high water table
Maintenance
Maintain the gravel pad in a condition to prevent mud or sediment from leaving
Me construction site. This may require periodic topdressing with 2-inch stone.
After each robhol, inspect any structure used to trap sedrnent and dam it
out as necessary. Immediately remo a all objectionable materials sp➢led,
washed or tracked onto public roodways.
f
Permanent 0-ound Cover
Centipede Sod to be used on all disturbed peas
'=Amu Seeds
Fert➢izer shall be the some analysis as specified for Seeding and Mulching' and applied
at the rate of 400 Ibs (450 kg) and seeded at a rate of 50 pouds (55 kg) per hectare.
Sweet Sudan Grease German Millet or Browntap UNet shag be used in summer months
and Rye Grain during the remainder of the year. The Engineer w➢I determine the exact dates
for using each kind of seed
Hydro -seeding is also acceptable for temporary stabdaafion for onsite and otTsite disturbance.
Fertilizer used far topdressing on all roadway areas except slopes Z I and steeper shill be
10-20-10 written approval of the Engineer, a different analysts of fertilizer may be used
provided grade and shall be applied at the rate of 5DO Ibs per acre (560 kg per hectare).
Fert➢izer used for topdressing on slopes 21 and steeper and waste and borrow areas shall
be i6-8-8 grade and shall be oWed at the rate of 500 Ibs per are (560 kg per hectare).
Upon written approval of the Engineer, a different analysis of fertilizer may be used provided
the 2-1-1 ratio is maintained and the rate of application adbsted to provide the some
amount of plant food as i6-8-8 and*
iademental Seeding
The kinds of seed and proportions shall be the some as specified for Seeding and Mulehing'
with the empletton that no centipede seed w➢l be used in the seed mix for supplemental
seeding The rate of application for supplemental seeding may vary from 251 to 751 per acre
(28 kg to 85 kg per hectare). The actual rate per acre (hectare) win be determined by the
Engineer prior to the tkne of topdesshg and the Contractor w➢1 be notified in writing of the
rate per acre (hectare), total quantity needed, and areas on which to apply the supplemental
seed. Mhknum fliage equipment consistin of a sood seeder shall be used for incerpo sting
seed into the so➢ as to prevent deturbance of existing vegetation. A dodbuster (ball and chain)
may be used where degree of slope preveits the use of a sod seeder.
MOO
The mnknum mowing height on this project shall be 4 Inches (100 mm).
Crimping Straw Mulch
Crimping all be required on this project adjacent to any section of roadway where traffic
is to be maintained or allowed during construction. In areas within 6 ft (2 meter) of the edge
of pavement, straw is to be crinhped and then Immediately tacked with asphalt tack
Crimping of straw in lieu of asphalt tack will be allowed an this project subject to the following
conditions
All areas seeded and mulched shdl be crimped and/or tacked with asphalt as directed by the
Engineer.
Crimping wit be Iknited to slopes 4:1 or ➢otter unles the Contractor can demonstrate to the
Engineer that steeper slopes can be negotiated without altering the typical section.
Straw mulch to be of sufficient length and quality to withstand the crsrping operation and provide
adequate ground cove.
Crimping equipment Induing power sauce shalt be subject to the approval of the Engineer
providing that maxknum spacing of crimpy blades shall not exceed 8 inches (200 mm).
Construction Road Stab➢i atien
Specification 16.80 - Construction Specificaions
I. pear roadbed and pmftg areas of all vwyetallon, roots and other
objectionable material.
2. Ensure that road construction follows the natural contours of the terrain if
it is possible.
3 Locate parking areas an naturally flat areas if they are av llable. Keep
grades sufficient for drainage but generally not more than 1 to 3%
t Provide surface drainage, and divirt excess runoff to stable areas by using
water bars or turnouts (References: Runoff Control Measures).
5 Keep cuts and faits at 21 or flatter for safety and stab➢ity, and to
facilitate establishment of vegetation and maintenance,
6. Spread a 6-inch course of ABC' crushed stone evenly over the full width of
the road and smooth to avoid depressions.
7. ➢here seepage areas or seasandly wet areas must be crossed, Install
subsurface dubs or geotext➢e fabric: doth before placing the crushed stone
(Practice 6.81, Subsurface Drain).
d Vegetate a➢ roadside afltrhes cuts, Nis and other disturbed areas or
otherwise appropriately stabilize as soon as grading is complete (References
Surface Stab➢oraton).
9. Provide apampriate sediment control measures to prevent off -site
sedimentation.
Maintenance
Inspect construction roads and parking arais periodically for condition of
surface. Topdress with new gravel as needed. Check road ditches and other
seeded areas for erasion and sedimentation after runoff -producing ralns
Maintain all vegetation In a healthy, vigorous condition. Sediment -producing
areas should be treated knmediately.
2' 14.0'
_ 3
III
II- 1
L_' 1=
TD 3 'I.-�
b-5'
SEE EROSION CONTROL CALCULATIONS FOR
VELOCITY CALCULATIONS.
Practice 6.20
NOT TO SCALE
ST
Temoarav Sediment Trio - continued
Protection from piping - Place iter loth an the foundation below the *op
to prevent piping. M alternative would be to excavate a keyway trench across
the riprap foundation and up the skis to the height of the dam.
Weir length and depth - Keep the spillway walk at least 4 ft long and stied to
pass the peak discharge of the 10-yr storm. A maximum flow depth of 1 R a
mkhkmxn freeboard of a5 ft, and maximum We slopes of 21 are recommended
Whir length may be selected from Table 6.60a shown for most site locations In
North Carolina
Table 6.60a
Design of Wiways Drainage Area MBY Length(1)
(acres)
(ft)
1
4.0
2
6.0
3
80
4
10.0
5
120
(1) Dimensions shown are minimum
Construction Specifications
1. pear, grub, and strip the area under the embankment of all vegetation and
root mot Remove all surface so➢ containing high amounts of organk matter and
stockp➢e or dispose of it properly. Had all objectionable material to the
designated disposal area
2 Ensure that All matertd for the embankment is has of roots woody
vegetatkn, organk matter, and other objectionable material Place the t➢1 In
lifts not to exceed 9 Inches and machine compact It Over IN the embankment 6
Inches to allow for settlement
J. Construct the outlet section in the embankment. Protect the connection
between the rOw and the so➢ from piping by using liter fabric or a keyway
cutoff trench between the riprap structure and the so➢.
(Place fine fitter k6rk between the riprnp and sal Extend the
fabric across the spillway foundation and sides to the top of the
dam; or
(Excavate a keyway trench dong the cantertkro of the sp➢lway
foundation extending up the sides to fine height of the dam. The
trench should be at least 2 ft deep and 2 ft wide with 1.1 side
slopes.
4. Clear the pond area below the elevation of the crest of the spillway to
fac➢Ttate sediment demauf
5. All cut and fit slopes should be 21 or flatter.
6. Ensure that the stone (drainage) section of the embankment has a minknum
bottom width of 3 ft and maximum side slopes of 1:1 that extend to the bottoin of
the sp➢lway section.
7. Construct the minknum finished stone sp➢Iway bottom width, as shown on the
plans with 2.1 side slopes extending to the top of the over filled embankment
Keep the thkfnhess of the sides of the spillway outlet structure at a minimum
of Z inches The weir must be level and constructed to grade to assure design
amity
8 Material used In the stone section should be a wall -graded mixture of stone
with a d50 size of 9 inches (dass B erosion control stone is recommended) and a
maximum stone side of 14 Inches The stone may be machine placed and the sma w,
stones worked into the voids of the larger stones The stone should be hard
angular, and highly weather -resistant
9. Ensure that the stone spillway outlet section extends downstream post the
toe of the embankment rut➢ stable conditions are reached and outlet vefocity is
acceptable for the receiving stream. Keep the edges of the stone outlet section
flush with the surrounding aground and shape the center to confine the outflow
stream (Referwnces: Outlet Protection).
10. Direct emergency bypass to natural, stable areas. Locate bypass outlets so
that flow will not damage the embankment
11. Stabilize the embankment and all disturbed areas above the sediment pod
and downstream from the trap immediately after construction (References Surface
Stab➢oration).
12 Show the distance from the top of the spillway to the sediment demout
level (me -half the design depth) on the plans and mark B in the field.
Maintenance
Inspect temporary sediment traps after each period of significant ralnfdL
Remove sediment and restore the bop to its original dimensions *ben the
sediment has accumulated to one-hdf the design depth of the trap. Place the
sediment that is removed In the designated disposal area and replace the
contaminated part of the gravel facing.
Check the structure for damage from erosion or piping. Periodically check the
depth of the sp➢Iway to ensure it is a minimum of 1.5 ft below the low point of
the embankment Immediately AN any settlement of the embank lent to slightly
above design grade. Any riprop displaced from the sp➢Iway must be replaced
immediately.
After all sediment -producing areas have been permanently stabilized remove the
structure and all unstable sediment. Smooth the area to blend with the adjoinkhg
areas and stabilize properly (References: Surface Stab➢kation).
IP
HARDWARE OTH h GRAIII Au cT PRO LION
Specificatka 16.51 - Construction Specifications
1. Uniformly grade a shallow depression approaching the inlet
2 Drive 5 FT steel post 2 FT Into the ground sarrondng the inlet.
Space post evenly around the perimeter of the inlek a maximum of 4 FT apart
1 Surrond the posts wit wire mesh hardware loth. Secure the wise most to steel
posts at the top, middle, and bottom. Placing a 2 FT flop of the wire mesh.
under the grovel for anchoring is recommended
4. Place dean grind (NC DOT 15 or 157 stone) on a 21 slope with a height of 16
Inches around the wire, and smooth to an even grade.
5. Once the contributing drainage area has been stabilized , remove acahmulated
sediment and establish find grading demotions
6. Compact the area properly and stab➢iced it with ground cove,
Maintenance
Inspect Inlets at kart wally and after each significant (0.5 Incur greater)
roinfidl event pear the mesh wire of any debris or other objects to provide
adequate Now for subsequent rains Tare care not to damage or underact the
wire mesh during sediment removal. Replace stone as needed
TD
Temmmu Divvsiam
,Wtkotion 16.20 - Construction Specifications
1. Remove and properly dispose of all tress brush, stumps and other
objectionable material.
2 Ensure that the minknum constructed cross section meets all design requirements
J. Ensure that the top of the d➢ce is not lower at any point than the design elevation
plus the specified settlement.
4. Provide sufficient room around diversions to permit machine regrading and deanout.
5. Vegetate the ridge immediately after construction, unless R will remain In place less
than 30 waking days.
Maintenance
Inspect temporary dvwsians once a week and after every rainfall. Immediately remove
sedwnent from the flow area and repair the diversion ridge. Careku➢y, check outlets and
make tkndy repairs as needed Rhen the area protected Is permanently stab➢ized
remove the ridge and the darnel to blend with the natural ground hovel
and appropriately stabilize it
19-GAUGE HARDWAR
(1/4 MESH OF
NCDOT #5 OR
WASHED S-
EARTHEN
OUTLET
Eel
MIN. TRAP VOL. = 3,600
CF/ACRE DISTURBED AREA (10 YEAR STORM)
Q
= (0.3)(9.7)(A)
(SEDIMENT MUST BE REMOVED TWICE A
YEAR)
SEDIMENT DISTURBED
MINIMUM TRAP
VOLUME
WEIR
DEPTH
FLOW
MIN. SURFACE
SF AREA
LENGTH
WIDTH
TRAP AREA (ACRES)
VOLUME (CF)
PROVIDED
LENGTH (FT)
LET
CFS
AREA SF
PROVIDED
LET
FT
1 0.35
1,260
1,792
4
4
1.02
444
800
40
20
2 0.65
2,340
3,112
4
4
1.89
822
1,250
50
25
SEDIMENT BASIN SUMMARY
MIN. TRAP
VOL. = 1,800 CF/ACRE DISTURBED
AREA (10 YEAR
STORM) Q =
(0.3)(9.7)(A)
A= DRAINAGE AREA
(SEDIMENT
MUST BE REMOVED AT MINIMUM TWICE A YEAR)
70 YR
SEDIMENT
DRAINAGE DISTURBED
MINIMUM BASIN
VOLUME
FLOW MIN. SURFACE SURFACE AREA
BASIN
AREA (ACRES) AREA (ACRES)
VOLUME (CF)
PROVIDED (CF)
CFS
AREA SF PROVIDED (SF)
A
5.45 4.69
8,442
12,259
15.86
6,909 11,169
Lo
4 0 0°0
0 0
000000 REFERENCE EROSION CONTROL
000000 CALCULATIONS FOR SPECIFIC
"000`h
OUTLET PIPE DIAMETER
00 DIMENSIONS.
(Do)
1
d50 = REFERENCE EROSION CONTROL CALCULATIONS
dMAX = REFERENCE EROSION
CONTROL CALCULATIONS
La = REFERENCE EROSION CONTROL CALCULATIONS
MIN. APRON THICKNESS
= 4.5"
NOTE., GEOTEX NONWOVEN FILTER FABRIC TO
BE PLACED UNDER ALL
STONE
OUTLET PROTECTION.
0QUTLET
PRO7E'C77ON
DETAIL
NOT TO SCALE
���� ► ��ll K
BF TEMPORARY BAFFLES
Pratice 6.65
NOT TO SCALE
STRUCTURE
MININUM RIP RAP
DIMENSIONS
L X W X D
CLASS
QUANTITY
CULVERT 1
25' X 13" X 1.5'
ll
18 CY
NCDOT #5 OR #57
WASHED STONE
VE
SURFACE AREA
AMBER
VRFACE AREA
MBER
-ACEAREA
A
OVERFILL 6" 2�•.
FOR SETTLEMENT 'yi,R /BAFFLES (TYPICAL)
--r-,T / Pratice 6.65
EMERGENCY
BYPASS 6' BELOW
SETTLED TOP OF DAM
NATURAL
GROUND
SECTION VIEW �-►
3'MINIMUM
WASHSTONE I'
NOTE: THICK ON FACE
SEE NARRATIVE FOR FROM TOE OF DAM 5'MINIMUM
MORE DETAIL. TO WEIR.
*00
`BAFFLES (TYPICAL)
Pratice 6.65
CROSS SECTION
sr TEMPORARY SEDIMENT TRAP
Practice 6.60
NOT TO SCALE
PVC END PVC VENT SCHEDULE 40
CAP\ PVC ELBOW PIPE PVC PIPE
_-PVC END Ll-�
CAP SCHEDULE 40
TU
PVC PIPE\ \ �ORIFICE
PVC TEFLEXIBLE \ PLATE
C PIPE HOSE VC TEE
HOLES iNDERSIDE
BOTTOM SINPFACF
END VIEW FRONT VIEW
SKIMMER SEDIMENT BASINS ARE NEEDED WHERE DRAINAGE
AREAS ARE TOO LARGE FOR TEMPORARY TRAPS. DO NOT LOCATE
THE SKIMMER SEDIMENT BASIN IN INTERMITTENT OR PERENNIAL
STREAMS.
ARM ASSEMBLY
\ o - "C" ENCLOSURE
WATER ENTRY
°ERSPECTIVE VIEW UNIT
SEE DENR STANDARDS &SPECS.
FOR COMPLETE DESIGN CRITERIA & MAINTENANCE I
Practice 6.64
NOT TO SCALE
LICENSE ¢ C-2710 "
COASTAL
SITE
DESIGN, PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
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DRAWN BY.- RLW
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PROJECT NO.: 13-0295
Shmt No. EC3af EC3

50 25 0 50 100 150
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INLET DRAINAGE AREAS
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SCALE IN FEET. 1 "= 50'
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I-
LICENSE # C-2710 "
COASTAL
SITE
DESIGN, PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDEN77AL
P.O. Box 4041
W1Imington, NC 28406
[phone]
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DATE: 10-14-13
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DRAWN BY.• RLW
CHECKED BY.• HSR
PROJECT NO.: 13-0295
Sheet Na DA 1 of DA

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SEDIMENT TRAP DRAINAGE AREAS
FA
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50 25 0 50 100 150
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SCALE IN FEET. 1"-- 50' t
TEMP. DIVERSION DRAINAGE AREAS
f`gs FS�_ Ii \
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GRASSED CHANNEL DRAINAGE AREAS
150 75 0 150 300 450
SCALE IN FEET. 1"= 150'
CULVERT DRAINAGE AREAS
SWALE
AREA
1
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2
L20 A
3
1.01 A
= DRA!IAGE AREA
ClXtfRT I AREA
1 1 11.50 A
= DRAINAGE AREA
LICENSE j C-2710
COASTAL
SITE
DESIGN, PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENAAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
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DRAWN BY. RLW
CHECKED BY.• HSR
PROJECT NO.: 13-0295
Sh"t No. DAZDA
i

50 25 0 50 100 150
SCALE IN FEET. 1 "= 50'
GRASS -LINED SWALE DRAINAGE AREAS
LICENSE # C-2710
COASTAL
SITE
DESIGN,PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDEN77AL
P.O. Box 4041
W1Imington, NC 284O6
[phone]
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HORZ. SCALE: as noted
INERT. SCALE: N/A
DRAWN BY.RLW
CHECKED BY.• HSR
PROJECT NO.: 13-0295
DA3 DA

27 FT ,
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DOUGLAS MURRAY GRAY & 07HERS
DB 3098 PG 792
DB 265 PG 630 I
LESS DB 1566 PG 778
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DB 729 PG 782 \
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ZONING = R-20 \
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NCGS "HOLLY"
N = 27 ,,811.916 USFT
E = 2,4,35,793.560 USFT
GPS OBSERVED POSITION JUNE 2013
Z=/64.12 USFT (NAVD '88)
CF/= 0.99995884
e 20 I 20 40
'.
LICENSE J C-2710
COASTAL
SITE
DESIGN,PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
WiN—4lmingtC2806
441
.�l
191
DATE.- 10-11-13
HORZ SCALE.- 1" — 40'
VERT. SCALE.- N/A
DRAWN BY. RLW
CHECKED BY.• HSR
PROJECT NO.: 13-0295
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1" SCORE(TYP)
i 9ci
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4"THICK
5 FT WIDE
STANDARD
SIDEWALK DETAIL
NTS
F
S = 0.6Z
VARIES
SWALE A
NOT TO SCALE
r---- 120 FT
N
3� FZ RPD� 24'
�9p
TYPICAL HAMMERHEAD
NOT TO SCALE
CIL
5.5' 1 5' 1 30" 1 30' 1 5' 1 5.5'
18 FT PARKING 24 FT DRIVE PATH 18 FT PARKING
SPACE SPACE
SLOPE SLOPE
FF ELEVATION VARIES 2 0% J 61 /1.5' ASPHALT ` P 07 VARIES FF ELEVA7ION
5' CONCRETE SIDEWALKI6" ABC STONE/ \6;' ABC STONE \ �5" CONCRETE SIDEWALK
8 ABC STONE
EDGE OF PAVEMENT (REVERSE/INVERTED CROWN) EDGE OF PAVEMENT
(ELEVATIONS PROVIDED IN GRADING PLAN) (ELEVATIONS PROVDED IN GRADING PLAN)
. emu•VER .. .. �. ....
NOT TO SCALE
JOINTS
EP EL.
EDGE OF PAVEMENT (TIP) fS EP + 0.1'
SEE PRECISE GRADING
PLAN FOR ELEVATIONS �0of
(THIS SHEET) EP EL E
EP + 0.5'
DEPRESSED SIDEWALK & HANDICAPPED RAMP
TYPICAL GRADING DETAIL
NOT TO SCALE
GRADING
EP
KEY
— EDGE OF PAVEMENT
TC
— 70P OF CURB
BC
— BACK OF CURB
GL
— GUTIM LINE
FS
— FINISHED SURFACE
FL
— FLOW LINE
TSW
— TOP OF SIDEWALK (PROPOSED)
(7SW)
— 70P OF SIDEWALK (DUS7ING)
BSW
— BOTTOM OF SIDEWALK
HP
— HIGH POINT
TG
— 70P OF GRATE
EXISTING / PROPOSED STORM
1
SEVER & CATCH BASIN
GRADING NOTES
1. CONTRACTOR TO MAKE SMOOTH
7RANSI7TON FROM INVERTED CROM TO
SHEET FLOW IN DESIGNATED AREAS
2 CONTRACTOR TO ENSURE POS117W
DRAINAGE IN ALL FINISHED AREAS
J. ALL BUILDING ROOF DRAINS MUST BE
DIRECTED INTO THE STORM DRAINAGE
COLLEC77ON SYS7EM OR INTO THE PARKING
LOT.
4LIC
COASTAL
SITE
DESIGN, PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
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DATE.' 10-11-13
HORZ. SCALE 1" = 30'
VERT SCALE: N/A
DRAWN BY.' RLW
CHECKED BY.' HSR
PROJECT NO.: 13-0295
Sheet No. 0/ 8

ii'
- 63
IWAi
60.5
I SEE 9EET 5 OF 8 FOR
-59
GZOSS-SECTHIN AND GRADIN
E = 57.0
_
'
5 CY a �Rl
.
I
57
fi
I
I
56�
1
I
E = 5&
I
FOREBAY BOTTOM = MO
tl
POW Borrow = 5ao
(
2-78LF24'aORCPs
WIH WATER IMT JONIS AND TES
I �b
I
I
li
I56i
57
58 59
60
I
TEMPORARY POOL ELEVATION = 61.4
SURFACE AREA O ELEV. 61.4 = 14MI .7
STORAGE 0 ELEV, 61.4 = t4307 OF
60
61
E - 6269
SEE DETAIL 7111S SLEET
I
-59
s8
57
_ 10 FT EMIING AT&T UlIUTY E400T
SEE DETAIL iNS 9M`f7
_ -�- 1. ALL BMW ROOF DRAWS MUST BE DWC70 INTO BE STOIRY DRAINAGE COLLECTION
io F7 ETOS1wG AT&T UTNITY FAs7EN/T o - - �- -
- PORTABLE
E wro TO ETUSET/70 DRAIN
LOT.
z ParTA&E P1ND ro � usm ro DRAW POND IN cASL' OF EMERGa1cr. PUMP TO BE
PLACED ON TOP OF BERM WITH S07M ATTACHED TO HOSE Ritz AND COVERED NTH STOKE
- - - 2 2 1I 5 0 10 20 30 HOSE OUTLET ro DRAIN ACROSS STABLE UPLAND AREA WISNIT TORE8TRAIN EROSION.
STORM WA TER WET BASIN A .1 POD SDE5LOPES ro BE PONAEN7LY VEGETARVELY STABILIZED WAR CENTIPEDE SOD. I
SCALE IN FEET. 1"-- 10' 4. BASIN TO BE RECORDED IN A DRAINAGE EMBENIT �
PARES 19.5'
Z
FOREBAY VOLUME
u
OURED
SORSTTRAAGE TYPICAL
gg
NSEL - 44� 4
th
RP RAP 1.5min. ��',
-�
P
3'miv. E1Drmw = 55.0
OUTLET PRE
OUTLET
^3•
PROTECXW
NON NOW74 FX7ER FABRIC UNDER RP RAP
AS ON PLANS
(TYPICAL
AT ALL STOW OUTFALLs TO POW)
NOT TO SCALE
NOTES:
1. TEMPORARY SLOWER TO BE INSTALLED ON PRIMARY OUTLET STRUCTURE BOX
AND ro REMAIN IN PLACE UNIX 97E IS PERMAiORY STABNM PER NCOEN INS
SEDMENTATTON AND BMW CONTROL PERMIT. SEE 92W R DETAILS FOR INSTAM ML
2 GRADE WNL BE 2a1 ONLY IN FRONT DE OUTET BOX REMIAN NG 9ELF "0 BE
fai. PP Is THE CE47ER OF THE i&i SELF.
3 RP RAP ro BE PLACED AROUND TIE PERWEU OF OUTLET BOX
4. 4 FT x 4 FT PRECAST CONCRETE BOX OR EQUIVALENT HAND BUILT
S 90HU R = 25' 9DWER N IH 20' ORFICE D1AWU
RIP OF BOX AT
j
'W PLUG EL- 61.4 F UCA� -
si]1BLY
CROSS
ONCE aJCE 1,EMOVED 0WSFL = 6a4 INV = 60.4 INV= 6a4
12' 2FTSUMP
GFOR CEANOUT
12' I
aim
POND BOTTOM
aE V- 55
1''a' f :.:: :: I
26 Fr
TOP OF
T
ETEVANON = 6,T0
i\
l
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
1
a B RP Rip W/ GE07IX
NONWOVEN FLIER FABRIC
le 1NEE (TO BLRROMD ENW
OUTLET PPE OUTLET SIRUC7W)
i
60BASE EL - 56.8
sECTDN '
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
ELEV.. = 62J2
EIM4 NIOMENIT TO BE RIP RAP
ARMORED AS NECESSARY
TO STABILIZE AND PREVENT
SCOUR AND WASHOUT
RETAINING WALL
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
WET BASIN AS -BOIL
T
SUMMARY:
AS -BUILT DATA:
AS -BUILT DATA
1. IMPERVIOUS AREA PERMITTED
155,954 SF (3.58 ACRES)
2. NORMAL POOL SURFACE AREA
11,314 SF
J. NORMAL POOL ELEVATION
66.4
4. POND DEPTH (DEEPEST POINT)
6
5. POND BOTTOM ELEVATION (DEEPEST POINT)
55
6. ORIFICE INVERT ELEVATION
60.4
Z OUTLET BOX CREST ELEVATION
61.4
8. STATE STORAGE VOLUME
13,307
9. 10.1 FT VEGETATED SHELF
YES
10. 10 FT ACCESS
PRESENT
11. FOREBAY
YES
12 PRIMARY SPILLWAY ELEVATION
61.4
13 EMERGENCY SPILLWAY ELEVATION
62.32 / 62.69
It ORIFICE SIZE
20'
15. WEIR CUT CREST LENGTH
N/A
16. WOR CUT ELEVATION
N/A
17. SIDESLOPES (TYPICAL)
3.1
18. INV. OF PIPE FROM OUTLET STRUCTURE
60.4
1.5' STORAGE VOLUME REQUIRED = 11,696 CF
1.5' STORAGE VOLUME PROVIDED = 13,307 CF
/ 7TE FOLLOWNG SPECIES OF NEXAfDS VEGETAIM ARE BITABLE FOR
PLANTING ALONG 7w iai VEGETA70 S!RF•
PLAN7S SIDED FOR 9EOF NAM IMOERWAIER
- SAGITTARM LANCEQUA (BULL MOE)
- S40TTARIA LAW" (DUCK POTATO)
- SALINIIRUS C MLls (UZARDTAL)
PLANTS TILTED FOR 9E1F RMM ABOVE WATER
- ASOLEPIAS INCARNATA (SWAMP LOXN®)
- MU MARA (Q1LLL SEDGE)
- CELOFE G7ABRA (MITE TU RXG AD)
SF OF to i BELF DIRER WATER = Z816 7 / 200 = t4.1 X 50 = 705 PLANTS REQUIRED
705 / 3 - 235 PLANTS OF EACI OF RE DNEE LISTED ABOVE MUST BE PLANTED
9' OF fal 91ELF ABOVE N'A7ER = A148 -7/ 200 = i.57 X 50 = 785 PLANTS REOURED
75D / 3 = 262 PUNTS OF EACH OF RE NU USIED ABOVE MUST BE PLANTED
IF ONE OR MORE OF THE SUMMED SPECIES IS LNAVAI ABL& APPROPRIATE
WETLANDS VEGETATION COINON 70 THE COASTAL NORTH CAROLINA REGION
MAY BE BIBSRTUIED. SEE CH 9 OF STATE S7OIRMW47ER BMP MANUAL
FOUR UST OF 07MR RECOMMENDED WETLANDS PLANTS
WETLANDS PLANTINGS
DEVIATIONS FROM
DESIGN DRA WINGS:
STORAGE BASIN i
DESIGN
ASBUILT STATE MIN.
ORIFICE ELEV. 60.5
60.4
PP (SA) 11,169
11,314
VOLUME (CF) 12,259
13,307 11,696
EMERGENCY SPILLWAY 62.5
62.32
1. AS -BUILT LOCATIONS PERFORMED AND PROVIDED BY LANIER SURVEYING CO.
if P-0124
2. NA VD 88
VARIES 10' 12' 24'
16'
EMBANKMENT TOP= 6.10 (SETi Mj = 6.125 (CONSTRUCTED)
EMERGENCY SPILLWAY = 6232
(STATE STWAGE)l TOP OF GRATE = 61.4 STATE STORAGE = 1 JO7 CF
NOWAL NSEL= 6a4 (MUDDLE OF 1a1 9IETF) n
22 LF 18' HOPE '4, BOTTOM Or Lai SELF EL= 60.0
= 59.85
ANR-SEEP COLLAR BO7TOW EL= 515
BOTTOM SNM STRUC7II?E EL= 568
ANR-SEEP / SEDIVI NT aEANOUT EL = 56.0
cam E= 60.4 =
SEE DETAIL /
21' 5'
VIDE
fal SELF
VARIES 35'
s -bui
EMBANKMENT SECTION swg 131 o o 7
NCT TO SCALE
CmSD
ENGINEERING
LICENSE # C-2710
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENA<
P.O. BOX 4041
WILMINGTON, NC 28406
[phone]
CA
`SO�'FESS/�
L SEAL
025483 r
DATE.3-26-19
HORZ. SCALE.- 1' = 10'
VERT. SCALE.. N/A
DRAWN BY.• JSM
CHECKED BY.• HSR
PROJECT NO.: 13-0295
Sheet No. 0/