SW8090116_APPROVED PLANS_20090317

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8
DOC TYPE
❑ CURRENT PERMIT
V APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

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PROJECT LIMITS4`�-
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C- 04 C- Ot
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C- 04 C 02
(TYP) /
\ / / FE-1
10
/ C- 04 C- 02
WETLANDS
i y PROJECT
-
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/ C-104 C- 02 C- 04 C- 02
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SEE SHEET C-302
27 W-1 ,
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15" RCP
STORM DRAIN PROFILE 'B'
PVC ROOF DRAI
COLLECTION SY:
m m
-- - -25-- - -
_15 "
\p �_-__ - -' \ j -, C- 04 C- 01 STOR DRAIN
PROJECT LIM)TS Z- _ ` �- - -= SCHMIDT STREET �- ^' (TYP) SEE
i --
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20.00'
HEAVY DUTY CONCRETE FIRE 6.00' FIRE TRASH
CONCRETE RIGID PAVEMENT SIDEWALK ACCESS WALK ACCESS CONCRETE ENCLOSURE
SIDEWALK CURB AND RE: ARCH.
GUTTER
HEAVY DUTY BITUMINOUS HEAVY DUTY
RIGID PAVEMENT CONCRETE RIGID PAVEMENT
\ - -- - PAVEMENT
SECTION A SECTION B SECTION C
1 2 3
15
C- 04 C- 01
5
LEGEND
- - 20- -
- EX. CONTOUR (MAJOR)
- - - - - - - - -
- EX. CONTOUR (MINOR)
PR. CONTOUR (MAJOR)
20
PR. CONTOUR (MINOR)
0.6%
FINISH GRADE SLOPE
X 20.15
FINISH GRADE ELEVATION
EX. STORM PIPE
PR. STORM PIPE
®
PR. STORM MANHOLE
®
PR. AREA DRAIN
®
SPLASH BLOCK
EOP
EDGE OF PAVEMENT
FL
FLOWLINE
SL
SPILL LINE
TG
TOP OF GRATE
SW
SIDEWALK
HDC
HEAVY-DUTY CONCRETE
HW-1
CONCRETE HEADWALL NO.
CB-1
CATCH BASIN NO.
FE-1
FLARED END SECTION NO.
9H-1
STORM MANHOLE NO.
CI-1
CURB INLET NO.
®
CONCRETE SIDEWALK
FIRE ACCESS
RIGID CONCRETE
'
PAVEMENT
HEAVY-DUTY RIGID
PAVEMENT
NOTES:
1. SEE SHEET C-105 FOR EROSION
CONTROL MEASURES.
2. GRADING IN LANDSCAPE AREAS AT
BUILDING TO BEGIN 0.5' BELOW FINISHED
FLOOR.
3. REFER TO ARCHITECTURAL PLANS TO
VERIFY DOWNSPOUT AND SPLASHBLOCK
LOCATIONS.
STORM DRAIN PIPE SCHEDULE
RUN
NAME
SIZE/
MAT'L
UP
STREAM
NODE
DOWN
STREAM
NODE
LENGTH
(FT)
UP
STREAM
INV.
DOWN
STREAM
INV.
SLOP
A
15" RCP
CI-1
MH-1
116.72
22.34
21.75
0.50 e
18" RCP
MH-1
CI-2
56.02
21.50
21.22
0.50%
18" RCP
CI-2
CB-1
99.88
21.12
20.62
0.50%
18" RCP
CB-1
VIH-2
163.45
20.52
19.71
0.50%
24" RCP
MH-2
FE-1
105.67
19.21
18.68
0.50%
B
15" RCP
CB-2
CB-3
68.41
21.89
21.54
0.50%
15" RCP
CB-3
I CB-4
75.27
21.44
21.07
0.50%
15" RCP
CB-4
CB-5
96.06
20.97
20.49
0.50%
15" RCP
CB-5
FE-2
77.85
20.39
20.00
0.50%
C
15" RCP
HW-1
HW-2
44.19
21.29
21.07
0.48%
D
15" RCP
HW-3
HW-4
23.97
21.53
21.41
0,50%
POND
OUTFALL
18" RCP
OS-1
FE-3
45.00
1 22.00
21.80
0.44%
10.00'
MOTORCYCLE
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PLANNED EROSION AND SEDIMENT CONTROL PRACTICES -
CE 1. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
Practice 6.06
Shall be installed at the entrances to the project
from on 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"
SF 3. 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 NCDENR/LQS personnel.
GC 4. GRASS -LINED CHANNELS
Practice 6.30
All overflow swales to be graded to design
configuration seeded, and stabilized if necessary with
temporary s{raw-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.
�P 5. OUTLETSTTA4ILIZA77ON
PracticeRiprop 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, roadwaylparking 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.
$B 7. SEDIMENT BASIN
Practice 6.61
The Sediment Bailin 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.
si< 8. 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.
IP 9. INLET PROTECTION
Practice 6.51
A temporary measure of wire -mesh hardware cloth around
steel posts supporting washed stone placed around the opening
of a drop inlet.
TD 10. 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 upslops runoff and
to divert sediment -laden water to appropriate traps or stable
outlets.
© 11. TEMPORARY SEDIMENT TRAP
Practice 6.60
Sediment traps are to be installed as Indicated on plan
at the downstream end of swales as shown.
LEGEND
SILT FENCE
CULVERT
RIP RAP
- 0
CONTOUR
L
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%`' i / SiIEET C-504
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PROJECT
TEMPORARY SEDIMENT TRAP SUMMARY,
MIN. TRAP VOL - 3.800 CF/ACRE DISTURBED AREA (10 YEAR STORM) 0 - (0.2x9.7)(A)
(SEDIMENT MUST BE REMOVED TWICE A YEAR) ��
SEDIMENT DISTURBED MINIMUM TRAP VOLUME WEIR DEPTH FLOW MIN. SURFACE SF AREA LENGTH WIDTH
M& VOLUME (W PRQjIDEQ, LENGTH (F n (M L= AREe_W ffiOV1QM jm jn
1 2.92 10,512 1Z500 8 5 6.88 Z485 Z500 50 50
1 \ ( I I
� i 180.1
i
"A
ROJECT UMITS
u&�
224.8 FT
P-636
A\ \` \. 7
53 LF 18"
TD <,
1'
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PROJECT UMITS--' 1
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LIMITS OF DISTURBANCE
5.83 AC
1 LIMITS OF DISTURBANCE INCLUDES ACREAGE FOR JOGGING TRAIL
I! � I ROJECT LIMITS
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SEDIMENT BASIN SUMMARY,
MIN. TRAP VOL - 1.800 CF/ACRE DISTURBED AREA (10 YEAR STORM) 0 - (0.2X9.7)(A)
(SEDIMENT MUST BE REMOVED AT MINIMUM TWCE A YEAR) 10 YR
SEDIMENT DISTURBED MINIMUM BASIN VOLUME FLOW MIN. SURFACE SURFACE AREA
1M AREW9= VOLUME CM PROVIDED ZW AREA W PROVIDED [SF�
1 4.33 7.794 14.OB1 8,4 3.659 21.821
0 25 50 100
L inch = 50 ft. Horizontal
rNOTE HELL• I. ANY AREAS ON 97E NIRIOUT AC71WTY MINN 21
CALANDER DAYS SHALL BE TFMPORMY STABIUZED AS PER
PER THE SPEOFiCABLWS FOLLONING ANY PHASE OF GRADING
Z THIS PLAN 70 BE U7111M) AND REHENED ONLY iN CON UNC71ON
NITH THE NRITiEN NARRAIK WCH IS AN INTEGRAL PART OF
INS EROSION AND SEUMENT CONiROL PLAN.
I ALL SLOPES SHALL BE 1-1 OR FLATTER.
4, ALL ROOF DRAINS TO BE DIRECTED TO STORV DRAINAGE
SYSTEM.
5. NO KILANDS E10ST ON SITE
6. SITE IS L000170 ON SCHMIDT STREET AT THE MCAS
Z ANY BORROW MATERIAL REQUIRED HILL BE TAKEN FROM ANORIER
APPROVED 97E ON USAIC BASE: CAMP LEXIINE ANY
SURPLUS CUT MATERIAL HILL BE DISPOSED OF AT AN
APPROVED SITE ON THE USMC BASE; CAMP LE.EUI(E
CONSTRUCTION SCHEDULE -
1. Obtain approval of Plan and any necessary permits, and hold
a pre -construction conference prior to commencing any work.
2. Flag work limits and stake -out roads and storm drainage
structures for preliminary grading.
3. Install Grovel Construction Entrances.
4. Install sediment basin, skimmer and sot fencing as shown on
plan prior to clearing and grubbing site.
5. Construct grass lined channels,
and any other sediment control practices shown, prior to
rough grading roadways, site and stockpiling topsoil as necessary.
6. Install utilities in roadway/parking lot, establish final grades
and stabilize road/parking lot with stone base course.
Z Final grade, Install non -municipal utilities as needed, and
vegetatively stabilize areas where building construction is
not imminent.
B. All erosion and sediment control Practices are to be
inspected weekly and after any rainfall, and repaired as
necessary.
9. Upon completion of construction, the roadway/parking lot
Is to be paved, and all areas permanently
vegetatively stabilized. After site stabilization, temporary
measures are to be removed.
MAINTENANCE PLAN -
1. All measures to be inspected weekly and after any rainfall
event and needed repairs made immediately.
I Sediment Basin to be cleaned out when the level of sediment
accumulates to 1.4' above pond bottom, 1.4' above forebay bottom.
J. Sediment to be removed from swales when they are approximately
50% filled or sediment level is with 1' of top of ditch bank.
4. Sediment to be removed from behind any Silt Fence and
Inlet protection devices when It becomes 0.5' deep. Fencing
and inlet protection to be repaired as needed to maintain a
5. All seeded areas shall be fertilized mulched, and re -seeded
as necessary, according to specifications provided, to
maintain a suitable vegetative cover.
6. Construction entrance to be maintained in such a manner as to
prevent mud or sediment from leaving the construction site.
Periodic topdressing with 2-inch stone may be required.
inspect after each rainfall and Immediately remove all
ob/ectio able materials spilled, washed, or tracked onto
public roadways.
VEGETATIVE PLAN -
1. Permanent vegetation to be established in accordance with
North Carolina Erosion and Sediment Control Planning and
Design Manual", Section 6.11, latest version. See Sheet C-505.
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
COASTAL
SITE
DESIGN,PC
P.O. Box 4041
Wilmington, NC 28406
[phone]
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FIRE PROTECTION
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NOTES.
1. ALL BUILBNG ROOF DRAINS MUST BE DIRECTED INTO THE DRAINAGE COUEC7ION
SYSTEM OR IN70 THE STREET/PARKING LOT.
2. PORTABLE PUMP TO BE USED 70 DRAIN POND IN CASE OF GENCY. PUMP TO BE 11
PLACED ON TOP OF BIM WTH SCREEN ATTACHED 70 HOSE AND COYERm WIN STONE I
HOSE OUTLET 70 DRAIN ACROSS STARE UPLAND AREA SUFA T l0 RESTRAIN EROSION.
3. POND SIDESLOPES 70 BE PER94NEN7LY VEGETATIVELY STABUIED 711 GRASS SEED OR SOD.
pI'�,
7 v
! +
11
0 10 20 20;�
'L
5
1 inch = 20 ft. Horizontal J I
103LF24•RCP \ \v
BORING 8
Y. = 25.9
IMP = 24•r �4 /
;V
r
R 1f I'
LEN POND BOTTOW = 1&0
LENGTH = 2 ..�,
t
t
t
t
\ i
r
= 101 FT
& 7H = 1 FT RADIUS 30 FT
\ ! LEHCTH 26.4
it
1f
1 rt
1
RADIUS _ 45 FT
Q 1
liA
NY=14
L2 = 821 SF
14,081
stilillill �,a uf
i' on��--�
WET BASIN DETAIL
NOTES
1. TEMPORARY SKIMMER TO BE INSTALLED ON PRIMARY OUTLET STRUCTURE BOX
AND TO REMAIN IN PLACE UN71L SITE IS PERMANENTLY STABILIZED PER NCOENR/LQS
SEDIMENTATION AND EROSION CONTROL PERMIT. SEE SKIMMER DETAILS FOR INSTALLATION.
2. ORIFICE/SKIMMER ASSEMEBLY AT OUTLET STRUCTURE TO BE TEMPORARILY COVERED WITH
WIRE AND 57 STONE UNTIL S17E IS STABLE
\ j?
EL- 24.2 FABRICATED GRATE TOP
90 ELBOW DOWN
8 BELOW WSEL L
W5EI. = 2T5
51
0
SB 3
1 \ 2.0• PERFORATED
PVC W/ GRAVEL EL= 18.5
AND FABRIC FILTER
POND BOTTOM
FLFV= 18.0
2 FT SUMP
FOR CLEANOUT
INV=
23.5
INVL 22.0
12w.60NC:,
OR GROUT
18• RCP
OUTLET PIPE
4 FT x 4 FT PRECAST CONCRETE BOXES
6'8ASE NC PRODUCTS 4848 OR EQUIVALENT
f
SKuuFR = 9 S• CxiuuFR WITH 9 9' nmrurw n1AUF7FR
SLGIIUN VILW
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
-40 Ft
Cy
FT
�PLACQ LINE
IF 18• RCA
�--F5 CYO I
n-SEEP COUAR
SEE DETAIL INS SNEET
1.5 FT DEEP
\RADNIS
LENGTH
I;
MRS
CALCULATION SUMMARY FOR DWQ:
IMPERVIOUS AREA PERCENTAGE:
TOTAL AREA DRAINING TO POND - 184,502 SF (4.24 ACRES)
TOTAL IMPERVIOUS = 105,969 SF (2.43 ACRES)
PERCENT IMPERVIOUS - 57.4X
REQUIRED SURFACE AREA:
AT.10 FT OF DEPTH, 90X TSS REMOVAL, SAIDA - 6.64
0.0664 x 184,502 - IZ253 SF SURFACE AREA REQUIRED
SURFACE AREA PROVIDED = 17,933 SF
1.5 INCH VOLUME:
1 = 5Z4
Rv = 0.05 + 0.009 x I = 0.05 + (0.009)(57.4) = 0.57 IN/IN
MINIMUM VOLUME - DESIGN STORM x Rv x DRAINAGE AREA
_ (1.5/12)(0.57)(4.24) - 13,075 CF
1.5 INCH STORAGE VOLUME AT ELEVATION 24.2 - 14,081 CF
2 TO 5 DAY DRAW DOWN:
AVERAGE HEAD FROM STORAGE ELEVATION
TO ORIFICE INVERT = (24.2 - 23.5) / 2
= 0.35 FT
2.0 INCH PVC ORIFICE: Q - CA(2gh)" 1/2
= 0.6(0.02181)(64.4 X 0.35)"1/2
- 0.06211 CFS
T = 226,690 SECONDS = Z62 DAYS
FOREBAY REW/REMENTS:
MINIMUM FOREBAY VOLUME - 20X OF PERMANENT POOL VOLUME
= 0.20 x 58,291 CF
= 11,658 CF
TOTAL FOREBAY VOLUME PROVIDED -
FOREBAY = 11,806 CF
ALL SLOPES
3:1 MAXIMUM
10' 101min. 21.5min. SEE PLAN
00
POND FDI?WA VOLUME
WSEL = 23.5 OF REQUIRED
STORAGE, TYPICAL
o` 'o P
p
W
a
3min.
j BOTTOM - 18.0
OUTLET PIPE
OUTLET
�o
PROTECTION
AS ON PLANS
(TYPICAL AT ALL STORM OUTFALLS TO
POND)
FOREBAY SECTION
DETAIL
NOT TO SCALE
WETLANDS VEGETATION NOTE:
THE FOLLOMING SPECIES OF WETLANDS WCETA71ON ARE SWTABE FOR
PLANTING ALONG THE 10.1 WGET470 SHELF:
- SAGITTARIA LAnFOUA (COMMON ARROWHEAD)
- SAGITTARIA LANCIFOUA (WICK POTATO)
- SAMIRIUS CMUUS (UZAROT4)
- PELTANDRA NRGINICA (ARROW ARUM)
IF ONE OR MORE OF THE SUGGESTED SPECIES IS UNAVAILAB& APPROPRIATE
WETLANDS VEGETATION COMMON TO THE COASTAL NORTH CAROLINA REGION
MAY BE SM7171RED.
WELDED FABRICATED TRASH
RACK W/SQUARE OPENINGS
SQUARE OPENINGS < 6"
-
r■���■■I
MEN
NEON
■E■■■■MO■E
S■M■ON■■■■
■N■■M■■■■■SOMMENOMEN
MONEEMEN■.ENOMENNEEN
ONEEM
MENEM
0
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5'- 0' O
GRATE PLAN VIEW
BOX PLAN VIEW
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
VARIES
CO
N
N
ANTI -SEEP
COLLAR,
SEE DETAIL
4-0"
SEE DETAIL
THIS SHEET
FOR
TRASH RACK
31'
5ZO FT
TOP or EIBAMOfDIT
40.0 FT EINAIKW - 27.0
/i\\i�\i\\\\\\�
BLY _ xx 2S0 //\\\\�\\\/\\\///.i
WET BASIN
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
NOTE: COLLAR TO BE POURED AFTER 0
PIPES ARE IN PLACE
REINFORCING AS NECESSARY.
Ln z
MIN
WET BASIN
ANTI -SEEP COLLAR
NOT TO SCALE
I 16' I
EMBANKMENT TQP- 27.0 (SETILED), = 2Z25 (CONSTRUCTED)
9 4"t4t,
EMERGENCY SPILLWAY = 25.0if (STATE STORAGE)/ TOP OF GRATES = 24.2 STATE STORAGE = 14081 CF
'ate BOTTOM OF 10:1 SHELF EL= 23.0
aNn-SEEP COLLAR, eorroM EL- 20.4
_7 \
SEDIMENT CLEANOUT EL = 19.4
BOTTOM SWM STRUCTURE EL- 18.5
IE= 22
BUR =
30, 10'
WIDE
I a 1 SHELF
VARIES 1 45'
EMBANKMENT SECTION
NOT TO SCALE
COASTAL
SITE
DESIGN,PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
I
*I No.C11912 I*
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DES I DRW ICHK
FIRE PROTECTION
BRANCH MANAGER
CHIEF ENG/ARCH
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1 I 2 I 3 I 4 I 5
C
Outlet Stabilization Structure
Specificatan 16.41 - Construction Spacdcations
1. Ensure that the abrade for the Star and r orap follows the required Ines
and grades shown In the plan. Compact any !M required in Me subgrods to
the density of the surrounding undisturbed motertd. Low seas In the
subgrade on undisturbed sal may also be Sid by Increashg the rorop
thickness.
2 The riprop and gravel !Ater must conform to the specified gracing !knits
shown on the plans.
3 Filter cloth, when used must meet design requirements and be properly
protected from punching or tearing during hstdatim. Repair any damage by
removing the ricrop and placing another piece of Star cloth over the
damaged area All connecting pints should overlap a minimum of 1 ft If
the damage is extenslw, replace the entire Star cloth.
4. Rprop may be placed by equipment but take care to avoid damaging the
Star.
5. The mhhwm thidmess of the ro* should be 1.5 tines the mad" stone
diameter.
6. Rprop may be Add stone or rough quarry stone It should be hard angular,
higbly weather -resistant and wed graded
6. Contract the apron on zero gods with no overk6 of the and Make the tap
of the rorep at the downstream end lewd with the reeding sea or slightly
below it
8. Ensue that the apron is properly, dignd with the rwd*g stream and
preferably straight throughout its length. !f a arve is needed to Of site
condHon4 place R In the upper section of the apron.
a Immediately after construction, stabilize all disturbed seas with vegetation
(Practice 6.f0, Temporary Seeding, and 6.11, Permanent Sewing).
Maintenance
Inspect rprop outlet structures after heavy rains to see if any erosion around
or below the rgrrop her taken place or if stones have been dislodged
Immmediately make all needed repairs to prevent further damage.
SF Sediment Fence (Silt Fence)
Specification 6.62 - Construction Specifications
MATERIALS
).Use a synthetic liter fabric or a pervious sheet of pol)")Ien4 nylon,
polyester, or pd)eMylene yam, which Is certified by the manufacturer or
supplier as conforming to the requirements shown In Table 6.62b. Synthetic
Star fabric should contain ultroviOet ray inhbRors and stahNzers to
provide a minmum of 6 months of expected usable construction life of a
temperature range of 0 to 120 F.
Unsure that posts for sediment fences are
1.3310/1ineor ft steel with a minimum length of 4 ft Mace
sure that steel pots haw projections to facilitate fastening the fabric.
3.For renfaroament of standard strength Star fabri, use wire fence with a
minimum 14 gauge and a maximum mesh spacing of 6 Indre&
GV
O
Table 6.626
Specifications For Sediment Fence Fabric
Ph)*d Property Requirements
Filtering Efficiency - 85% (ram)
Tensile Strength at Standard Strength- 30 Ib/lh in (min)
Extra Strength- 50 IbIln h (mm)
Slurry Flow Rate - a3 gd/sq ft/min (min)
CONSTRUCRON
).Construct the sediment barrier of standard strength or extra strength
synMefic Star fabrics
2Ensure that the height of the sediment fence does not exceed 18 Inches above
the ground surface. (Higher fences may knpound volumes of water sufficient to
case future of the structure.)
3Construct Me Star fabric from a continuous rill cut to the length of the
barrier to ovoid pbts When pints are necessary; secrdy fasten the Star
cloth only at a support pot with overlap to the next pot
4Support standard strength Star fabric by wire mesh fastened securely to the
Lop dope side of the posts using heavy duty wire staples at east 1 Inch long
or tie wire& Extend the wire mob support to fine Mtom of Me branch.
5. When a wire mesh support fence is used space pots a maximum of 8 ft apart
Support posts should be driven securely Into the grand to a mbkmm of 18
Inches
6.Extra strength Star fabric with 6ft post spacing does not require wife mesh
support fence. Staple or wire the titer fabric directly to pots
7Exwvute a trench approximately 4 Inches wide and 8 Inches deep dog the
proposed Ilse of pots and upsope from the barter (Ng" 6.62a).
B.BockSl the trench with compacted sag or gravel placed over the Ster
fabric.
9.0o not attach Ster fabric to existig trses
Maintenance
Inspect sedknent fences at least once a week and attar each rainfall. Make any
required repairs hunediatdy.
Should the fabric of a sediment force cdlopm tea, deconwos or become
Ineffective, replace it promptly. Replace burlap awry 60 days
Remove sediment deposits as necessary to provide adequate storage volume for the
next ran and to reduce presere on Me fence. Take care to awed mdermhhg
the fence dying deanout
Remove all fencing materials and unstable sediment deposits and bring the area
to grace and stabilize R after the contributing drainage am has been properly
stablized.
Grass -Lined Channels
Specification 16.30 - Construction Spedficetions
1. Remove d tree4 brush, stumps, and other objectionable material from Me
foundation area and depose of prcpety.
2 Excavate the channel and shop@ It to neat lines and dmensions shown on the
plans plus a 0.2 ft overact around the channel perimeter to allow for binding
during seined preparations and sod buydp.
J. Remove and properly choose of d excess sal so that surface water may
enter the channel freely.
4. The procedure used to establish gross In the charnel will depend upon the
severity of the conditions and selection of species Protect the channel
with mulch or a temporary liner sufficient to withstand anticoatd
velocities during the establishment period (Appendix 805).
Maintenance
During the establishment period check gross -lined channels after every
rainfall. After grass is established, periodically check the chamd; Brock It
after every heavy rohfd event immediately make repairs. R Is particularly
krWant to check the channel Outlet and all road crossings for bank stability
and evidence of pohg or scour holes Remove all significant sediment
accumulations to maintain the designed carrying capacity. Keep Me gars In a
hodth, Wgwous condition at all tines, since ft Is the prrnay erasion
protection for the channel (Practice 6.11, Permanent Seedng).
Sediment Basin
Sped6cabons 1 6.61 - Construction Specifications
).Site prgoaallais-Gsa grub and sbrp tcpsol from areas under the
embankment to remove tree4 vegetation, roots and other objectionable moterid.
Delay doming the pod area until fine dam is complete and then remove brush,
from and other objectionable materials to fwMats sedment demout
Stodpie all tcpsd a of aontahkg organic matter for on on the outer
shag of the embankment to facilitate vegetative establishment Place temporary
sedment control measures babe the bow as needed
2tit-off bench-Exrnwte a at -of trend; along the centerline of the earth
IS embankment tit the trench to stable sal mctarA but In no case mare it
less than 2 ft. deep. The cut-off trench must extend into both abutments to at
east the deviation of the rinser awl. Make the momnm bottom w O wide
enough to permit operation of excavation and compaction equipment but to no coo
less than 2 It Make Bklo slopes of the trench no steeper than 1.1. Compaction
requirements are the sane as those for the embarkment Keep the trench dry
dung badkfilhg and compaction operation
3Embanment-Take ff material fram the approved area shown on the plans. R
should be dean minerd son; he of roots, woody wgetatian, rocks and other
objectionable motaid. Scarify am on which All ls be placed before pkwkg
6l. the SI materid must contain suffident mabfae so R can be famed by
hand Into a bog without aunblin; If water can be squeezed out of the bed, ft
Is too wet for proper compacben. Place 1N materiel In 6 to 8-hab
continuous layers over the entire k no of the Nl Ones and then compact it
Compaction may be obtained by routing Me constuctim haling equipment over
the tub so that the entire surface of each layer Is hawwsed by at least one
Mod or tread hack of Me heavy egoment or a compactor may be used
Construct the smbadrnent to an ebwflon iOx higher Men the deep Might to
allow for seftlh;
4Coaddt spillways-Saxrely attach Me riser to Me barrel or barrel stub to
make a watertight struclurd connection. Secure of eamectbns between brad
sectkns by approved watertight ano bllin Place Me bard and riser on a
firm, smooth hundatian of knpervious mi. Do not use pervious material such
as smelt growl, or crushed stare as backlM mend the poi or anti -seep
collars. Place be IM malarial around Me ppe spillway In 4-hrh layers and
compact it undor and around the poe to at least the same density as the
decent embankment Care mot be taken not to raise Me pipe from fim contact
with its hwndatkn when anpx8rg under the poi haunches
Place a minimum depth of 2R of hand -compacted budrlM over the poe splfway
before crossing it with construction equpment Andwr the deer In place by
concrete or other satisfactory memo to prevent Rotation. In no coo should Me
ppe cnduft be hstaled by cutW9 a trench through the elan after ft
embankment is complete.
11imergehcy spilway-Instil Me emergency spMway in undisturbed sal. The
achievement of plumed alewtions, grod4 design width, and entrance and exit
chmnd slopes am critical to the successful Operation of ernergerwy apMwoy
6.Inlets-Discharge water Into be basin in a manner to prevent erosion. Use
dwwsians with Outlet protection to 611 sedmont-laden water to the ugvper
and of the pod area to improve basin trap off doacy (Re/ermosw Runoff
Control Measures and Outlet Protection).
7.Erosi n control -Construct the structure so that Me dahobed area is
minhhked Divert s dace water any from bare areas Complete tiro embanment
before Me area is cleared. Stabike Me emergency spillway embankment and al
other dsherbd areas above Me crest of the pmepd **way Immediately
after conshuetkn (References: Stofaee Stabilization)
BSafety-Sedment basins may attract children and can be dangerous Avoid steep
side daps, and fence and mark basins with wamkrg signs f trespasig is
likely. Follow O# state and local requirement&
Mahtonance
Check sedment basias attar paid& of significant runoff. Remove sdment and
restore the bash to Its mod almansans when sediment accumulates to one-
half the design depth.
Check the embanment 47&w )% and outlet kr erosion okmag4 and Inspect the
embankment for ppbg and settlement Make all necessary repairs hmdktely.
Remove al troh and other debris from the dwr and pod an
Land Gtadma
Specification 16.02 - Construction Spedficatime
).Construct and maintain O# erasion and sedimentation control practices and
measures In accordance wiM Me approved sedinentafkn control pin and
construction schedule.
2Remove good topsoil from areas to be graded and Ned and preserve it for
use In fink bg Me grading of Of aftfad am
3Scmly Ores to be topsoled to a minimum depth of 2 Inches befao pkcbg
topsoil (Practice 6.04 Topsdhg).
4psor and grub am to be Ned to remove &M vegetatb4 roots or other
objectionable material that would affect Me planed stability of the &
&&an that M materiel be bee of brush, rubbish, rocks, logo stunp4
bulking debt4 and other motefde haPvWkte for constructing stable
lMs,
6.Place al a In byre not to exceed 9 Inches In Mildoon and compact the
layers as required to reduce eosin, sopog4 settlement or other related
Problems.
7.Do not ircorporale from materiel or soft rued% or highly co npres8le
materids Into fly slope&
8.Do not place SI on a frozen foundation, due to possible subsidence and
sopage.
9Xep afmslms and other eater omw)amx measuree free of sediment cluing
at phones of development
10.11andle sups or springs encountered during construction In accordance with
approved methods (ProcNa &81, Subsurface bran)
IIPermanen6y, stabilize all groded areas hmenWmtdy after Anal grgnhy 1s
completed on each area In the grading plan. Apply, temporary sid0bration
measures an O# graded areas ohm reek is to be htempted or delayed for 30
raMg days or longer.
12Ensre that taped stodirples, barrow am and pd woo we odequoMy
protected from aroskn with temporary and find stablka8an measres, hddhg
sediment hewing and temlow" seeng as necessary
Maintenance
Perkdkaly dud d graded area and Me apparthg erasion and sedhhentaft
control pmctiom especialy, after heavy rahlays Promptly mwve of
aeaAnent ban dvwsana and oMar water -&Vold practices If washouts or
trwks ace, upon More hmadefdy. Prompt maintenance of send eroded areas
befoe they bnzme significant gales is an asses t1d part of on eHecUve
erasion and sedimentation control plan.
Construction Road Stabilization
Spedficetlon 16.80 - Construction 4iedfications
1. Gear malted and parking areas of ON vegetation, roofs and other
objectionable materfd.
2 Ensure that rod construction follows the naturd contours of the terrain if
R is possible
3 Locate parking moos an naturdy Nat areas if they are ow did, Keep
grades suBdent for drainage but generaly not more then 2 to 3X
4. Pmuide s rfae dranog4 and d art excess runoff to stable meow by using
water berm or turnouts (References: Runoff Control Measures).
5 Keep cuts and Slo at 21 or flatter for safety and stability and to
facilitate establishment of vegetation and maintenance.
6. *wed a 6-hoh cause of AtTC" ashod stone evauly over the Nil widtln of
Me rod and smooth to avoid dgoressims.
7. W wre seepage am or seasonally wet seas must be crossed instal
subsurface baba or geotexHe fabric doth before plocing the mashed stone
(Practice 6.81, &ftwface Ash}
8. Vegetate of roadside ditches; cuts, No and other disturbed am or
otherwise appropriately stablke as mom as grading Is complete (Rehwencex
artme Stabilization),
A Provide appropriate sediment control measures to prevent of -site
serWmontatlon.
Maintenance
Inspect construction roods and parking areas periodody far candl8on of
surface Topfras with new growl as needed Check road ditches and otieir
seeded "a for &=an and sedimentation alter runoff-pmgauehg ram
Maintain O# vegetation in a hedMy vigrous c ndtion. Segment -producing
ago should be Inotd hensMdy.
Permanent Seeding
The kinds of seed and fatAkw,, and Me rates of application of seed fri ker, and Imestan4
steal be as stated below. Daring periods of overlapping dates, the kind of mead to be used
Md be determined by the Engineer.
AN raise are In pounds per we (kilograms per hectaas)
Mwab 1 - August 31
September 1 - February 28
50055kg) Tag Fescue
500529) Tag Fescue
5009) Centoede
596kg) Centoods
25026kg) Bermudogroes (haled)
35K28kit) Bennufayam (mod)
SOOK56Lig) FaVizm
500,06ft) Ferflkar
40000450ft) Liamestone
4OW4500g) Limestone
Slopes 21 and Steeper and Waste Borrow Locatknw
Mach 1 - August 31
75K829) TO# Fescw
251(28kg) Bermudayoss (hufld)
500K560kg) Fetlker
400094509) Lhbstone
September 1 - February, 28
75K85kg) TO# Fagan
35K28kg) Bertnudagase (mhuNd)
500K560kg) Fehiker
4OW4500kg) Limestone
Approved Tag Fsaro
Adventure
Adventure l
Amigo
Anthem
Apache
Apache l
Hid
Austin
Dirookstwo
Bonanza
bonanza N
Chapel HM
Chesopeake
Chieftain
Carawdo
posfim l
Debutante
Duster
Fdom
rdom l
Findown Petite
Fladown
Fhebwn I
Genesis
&axe
amen
*Wn9
Jew
Jagua M
Kentucky 31
Kitty Hoek
Monarch
Montauk
kudng
Cyrrpic
Poor
Phwnk
Pb*
Pymmid
Rebel
Rebel Jr
Rebel l
Renegade
Sefarl
Shmandaah
Tempo
Titan
Tomahawk
TrO lazm
*a*
Tribute
Vegas
Wdoocr
Fartlker say be 10-20-10 analysis Loan lWitten approval of Me Engineer, a dHannt
aalysk of fertillzer may be used to provided the 1-2-2 ratio is mahtand and the mi*
Of app/katin dpstod to prodde tbe some amount of pint food as 10-20-10 and#&
empaary Seeding
Fwt&w shay be Me sane and)* as apeciNed for Sewing and MddI and applied
at Me rate of 400 ins (450 kg) and seeded at a rate of 50 pods (55 kg) per hechem
Sweet Sudan Gms4 Ge mm Milet or Browotop MMet shag be used In summer months
and Rye Quin deny the remainder of Me )war. Be tigIneer wi detmnbe the exam dotes
for using each kind of seed
FerHker used fortopaFesohg on d roadway area except slopes 2.1 and efeepr ah i be
10-20-10 written wrood of the Enginew, a different and* of Winer may be used
PmNded grade and seal be applied at Me rate of 500 its per ass (560 kg per hectare).
FaUbw used for topdressing an slops 21 and steeper and waste and borrow ores shed
be i6-8-8 grade and shill be applkd at the rate of SOD ibs per acre (560 kg per beetoro�
boon wftten approval of ft Engknser, a d/ferent and* of krWor may be used provided
Me 1-1-1 ratio Is maintained and Me rate of wiloaUan d)uted to prodder be sane
amount of pint food as 16-8-8 amdymi&
$t99lemental Seeding
Res kinds of seed and nwrtkns aid be Me same as specified for Soo ft and Mulching ,
with the execphon Mat no con*** wed wM be used In the seed mix for spplsnental
sewing The rote of application for supplemental sent may my fram 251 to 751 per we
(28 kg to 85 kg per hectare} The actual rote per we (hectwe) wM be determined by Me
ligheer prior to the tin» of topdnsing and the Contractor rM be noUAod In whing of the
rate per ace (hwtae� total quantity nsede4 and seas on which to apply the auppemental
wed. Minimum Wage eg anent consisting of a wod seeder shag be used for incapaaHng
seed Into the sal as to prevent disturbance of oWV wgeta m A dosbuster (ball and dwh)
may be used where degree of slope X~to the use of a sod seeder.
mada9
The minimum mowkg height an Mk projoct sod be 4 kxhes (100 mm�
( Crknping MuOj
pimping wM be required an Mls project adjacent to any section of roadway Where traffic
is to be maintained or eland derig construction. In aoas within 6 ft (2 meter) of Me edge
Of powment straw Is to be aknped ad then immediately tacked with asphalt led
Gimping of straws lieu of apha t tack will be lowed an this project abject to the /dosing
conditions
Ay asaa BOOM and mulched Sind be crknpd ad/a tacked MM asphalt as directed by the
Ehow.
Crhphg will be limited to slopes 4:1 or fatter an* Me Contractor am demonstrate to Me
Engineer that steps slew am be negotiated without altering the Wool wctio
Straw, made to be of sfBdent length and qudity to withstand be crimping operation and provide
adequate ground cow.
Gknphg agwWNI hdhhg lower source ahoy be subject to the Wrovet of Me 13mg w
providig flat maximum spacing of akmper blade# anal not exceed 8 hones (200 mm}
-u • •u ��« h .•.� i _ rJ - I .
7107
1. Gear the mtrmae and eadt arwa of d wgwtubm% mots and other
objectionable material and properly, grade it
2 Place the gravel to fine spedfic Bade and dimensions shown an the plans and
smooth it
3 Provde duhage to carry eater to a sediment frp or other suitable Outlet
4 Use gwfoxtle fabrics because they Improve stability of the foundation in
locations subject to seepage a high water table.
Maintenance
Maintain the gravel pad In a condban to prevent mud a sediment from leaving
the construction site This may require periodic tapdroasbg with 2-inch stare.
After each rabid, hoped my structure used to trap sediment and dam K
out as necessary lmmedattly removed objectionable materiels spAW,
washed a tracked onto public roadway&
SK inmeSt�s•
Specification 6.647 - Canabuctkn Spedficatlans
MAiM4LS
I. pea grub, and step the area order the embankment of all vegetation and
root mat Remove al surface ad containing high amounts of Organic matter
and stocipie or dispose of It properly Had of objectionable material to Me
designated disposal area. Pkwe tenparmy sedment canted measures below
basA as needed
2 Ensure Mat Sir material for the embankment is free of roots, woody
gtatkn, organic matter, and other objectionable materiel RoastMe M h
not to exceed 9 Indess, ad machine compact It Over 1W Me anbanlanant
6 Inches to allow for settlement
3 Shape the basin to Me specified denensi ut Prevent Me skimming device
from setift into Me mud by awwtkg a shallow pit under, Me dmmm or
proving a low support under Me dimmer of stone or timber.
4 Root Me barrel (t)pkdy 4-kwh Saba" 40 PIA: pipe) an a Nm, smooth
foundotka of krperw'aw salt, Do not use pervious material such as end
growl, a cashed atone ere hadkMkayroound the pOa Place Me AN material
Me cubs tokot�y amhein denaity as Met isrmbadnh t Caro mot
be taken not to foss Me POO from be firm contact with its hxmdation when
compacting under Me poe hondhes.
Place a mhhvom depth of 2 feet of compacted baddM over Me p' TRI
before amp ft wM comuhucUon equpment In no case should the ppe
cand dt be Installed by patting a french MI Me dam after the embankment
is canpme,
a Assemble the skinner fdowbg the manufacturers Instructions, or as designed
6. Lay the assembled dcknmer on the bottom of Me bash with Me Nexus pipe
at at Me JIM position Me of Me barrel akhmw over � excavated pit Be surAttach be k*k plat to Me e to
a rope to the ddmnw and anchor ft to be side o/ ft basin. This will be used
to pal Me Skimmer to Me side for maihtewxe
7. Earthen spiwo d Me spillway In uhdsfubed sal to Mt greatest
extent possiblia Me ochi mment of pinned devotions, gad4 do* width,
ad en and exit chapel dopes are critical to Me successful operation
of Me spilway The Lv sroald be fired with laminated plastic or
hpemeabb peat hzbria The fabric must be wide and long enough to
cover Me boffan and olds and extend onto Me top of the dam for andwrhg
In a trench. The edges may be seared with 8-Ja h staples err pins. The fabric
must be long snough to extend down Me dW and eat onto stable ground
The rift of Me fabric must be one pkw4 not johod w spliced; oMerwis
water am qef under the fabric ff the of Me hsbrk is hsffident far Me
entire length of Ma spMwax sic length
*am" Me oanpbte Nkik
y upper sects( overtop Me krwer sectien(s) so
Mmmat be
Now under thekb& Seaae be uppm edge and aids
of Me /abrk In a trench wiM staple or pins. (Adapted from A Manuel for
iDm*hg kdd9 ad S�taII Skinnner Sennett Bash&' Fehruor.K
8. ieis rDkchimp water into Me bosh In a monnm to prevent erosion. Use
temparmy 110" biro or diversions wiM Outlet proteeHm to dwwt gedh;ent-
kden water to Me 4W sal of be pod was to hprow basin trap effidowy
A Erodan contmhConsbuct the structure w Mat Me disturbed area is
minimized Divert art=& water away from bare areas Complete tM
embankment before the area a domed Stabfbe Me y apMway
embankment and ON other dsfubd am above me of theP1160011
spilway immediately after construction (References; Surface Stabilization)
10. After ON Me sdment-produchg am have been permanently atoUas4
remove the afrtwhrs ad O# fins unstable sediment Smooth the area to
blend wife the
dphing ass and stablize properly, (Refwencew Surface
Stablkafkn
Inspect skhwner sediment bases at least wieldy and alter each significant
(me -ha/ helm Or greater) minld event and rapdr inmrodaWy. Remove
sennent and restore the bosh to it& arigiral din ob= khan sedment
occunlats to me-hdf me Might of Me Aral baffle Puy ft Ammer, to
Oft side so Mat Me sediment underneath Ran be excavated Excowte the
sedment from the entire bash, not Just wand Me sdnmor or the Post cal.
Mob sum wgetafion growing In Me bottom of Me bosh dos not told door
if ft skinner he dogged with fresh and More Is water In Me bosh, usually
lerkinq an the rope A make tM d*ww bob up and dam and dsodge
MMaa oebris and restore Now. If this does not world pal Mot winner over to
the side of the bash and remove be debris. Also chedk the orifice inside the
*Jmw to we If R M dogged ff so remove Me debris
ff Me winner arm or bard poi Is dogged Me orifice am be removed and
Me obstruction domed with a plumber's =*a or by Nushhg with wale: Be
are and replace Me ad*@ before repositioning be skimmer
Check the ftrk Ihd *#way for d�gpge and make any mob
andpma Me NA widM of7he a 3c CMdk the enbmlanent
amulet for erasion damage and inspect the smbonianent for
Wand settlement Mace all necessary repairs I meddely Remove ON
OW other debris mom be akir~ ad pod am
Frooft weather am result h we taming in Me bash. Same spend
pr
ecautions be taken In be winter to prevent Me sdmmx fromka
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
COASTAL
SITE
DESIGN,PC
P.O. Box 4041
Wilmington, NC 28406
[phone]
CHARDWARE CL07H x GRAW! MET PROIECDON
Sloscificatkon 16.51 - Construction specifications
t. Unlfmmly grade a shallow depression approaching Me ML
2 Drive 5 FT sled post 2 FT into the ground srrondhg the Not.
Space post event' around the perimeter of the blot a maximum of 4 FT apart.
3 Susrand the posts wit we mash he*" dotlu Secure Me wire most to steel
Posts at the top, mkky4 and bottom. Placing a 2 FT flap of the wire mesh.
under the gavel for anchoring is recommended.
4. Ploy dean grand (NC DOT 15 or 07 steno) an a 21 slope with a height of 16
melba around the wk4 and smooth to an own grade.
a Once the contrbuti g drainage area has been stabilized , remove accumulated
sediment and establish find grading elewtkns
6. Compact the area property and stabibrod It with ground cow..
kabtenance
Inspect Inlets at loot weedy and after each significant (a5 In or greater)
rdmfd event Gear the mesh Pier of any debris or other objects to prodder
adequate Now for subsequent rain& Take care not to damage or undercut five
wire mesh dahg sennent removal Repiace stone as needed
TaMDV-a Sediment kV - continued
Protectin from pphg - Rom Star cloth on the faumdaHan below the rpralo
to privet pohg. An alternative wand be to excavate a keyway trench across
the ajorap fouhdotlon and up the aides to the height of the dam.
Wok length and depth - Kemp fine w0way weir at least 4 ft loxg and eked to
poi Me peak dschage of the 10yr storm. A maxhem bow depth of 1 It a
minimum freeboard of 0.5 ft and maximum side dopes of 21 am recommended
Wei length may be selected from Table 6.60a shom for most site locations in
North Cordha,
Table 6.60o
Design of SpMwap Drainage Aron Wei Length())
(ems)
(it)
1
4.0
2
6.0
3
&0
4
iao
5
/20
(1) Dkmensa;s show are minimum
Construction Specifications
I. pear, grub, and strp the area under the embankment of of vegetation and
root mot Remove all =two sal contahhg high amounts of organic matter and
stociple or dispose of ft p rWy. Heed all objectionable material to Me
designated &wood ova
2 Ensure Mat NN material for Me enbanknent is free of roots woody
vegetation, wgadc matter, and other objectimWe materiel Plow be IM In
figs not to exceed 9 inches and marhhe compact R. Over SI the embankment 6
Inches to slow far settlement
3 Construct Me Outlet section in five embarkment Protect Me cornectlon
between ft rorp and Me mi from pohg by using Ster fabric or a keyway
cutoff trench between the 4YW structure and Me soil
(Plots Me fitter fabric between Me rorp and salt, Extend Me
fdrk across the spillway foundation and skies to Me tap of the
dam or
(Excavate a keyway trench dung the centering of Me shi lmy
foudaHon extenng up the sites to be height of the dam. The
hendh should be at bast 2 ft deep and 2 ft wide with 1.1 side
dgxe.
4. perm Me pod area below the elevation of ft crest of Me spillway to
facMtate sdment deanaut
A AN cut and M slops should be 21 or Natter.
6. Ensue Mat Me stone (duhags) section of fine a banknent has a mhhem
bottom WkIM of 3 ft and maximum side dopes of 1.1 that extend to Me bottom of
the spillway section.
7. Construct five mhhwm Askhed stone spilway bottom wklM, as sawn on Me
plan4 wiM 21 sM@ slops extending to Me tap of the owe filed embankment
Keep the thickness of the fides of Me *Nway auUst shuchee at a minimum
of 21 hothes The weir mot be " and constructed to grade to assure design
COpodty
8. Matedd used In Me stone section should be a welf-graded am" of stare
with a d5o elm of 9 Inches (dos B erasion control stone Ar recommended) and a
ma in m stone she of 14 Inches. The stare may be machine placed and the xndw
storm wakd Into the wick of Me larger stone& The stone should be had
wow, and highly mother-rsktont
9. Enure that the stone WEM Outlet section extends doenstreom past the
toe of the miodonent mil stable conditions ere reached and outlet velocity to
a Mir" for Me recehig ahwan. Keep Me edge of ft stone Outlet section
flush with their sarardng ground and cope the center to am** Me outflow
abeam (References Outlet ProtoctlonI
1a Direct emergency bpass to nahraet #table areas Locate bypass outlets so
that flow will not damage the embankment
11. StabMze Me embankment and all dbbklW aeon above the sediment pod
and downstream from the imp Imedately after conahucoon (Referoncew Surface
Stamot n)
12 Show Me dstoam ban Me top of Me VNWQY to din sediment deanout
level (one-hdf Me design depth) on the plans and mock N in Me And
17 k'TT•+,71
Inspect tamporary sediment traps after each period of significant rohfaN.
Remove sedirnent and reetore the trap to Its anginal drnensian# when the
9011ment has aaarmdated to one-half the design depth of flu trap. Pme Me
sediment Mat is removed In Me designated dpwd area and replace the
contaminated part of the growl fah;
Check Me shuchme for drmop from erosion or pohg perb&myy, check Me
depth of Me spillway to more it to a mhlmum of 1.5 ft below the low point of
the ambanhnent knave iaWy IN any settlement of the embankment to stghtiy
above design grade Any * p &pkaosaf from the *&way muef be replaced
hmedately
After all sedmmt-produehg areas have been permanently stablked remove the
shuchre arid of unstable sediment &a" Me ono to blond with Me dphhg
aroma and stablize properly (Refr ncter Surface Stabilization).
k i,U
DES JDRW ICHK
FIRE PROTECTION
BRANCH MANAGER
CHIEF ENG/ARCH
U
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CODE ID. NO.
SIZE D
SCALE: AS INDICATED
WIMO NO. -
JOB ORDER NO. -
WORK ORDER NO. -
CONSTR. CONTR. NO.
N40085-08-R-1411
NAVFAC DRAWING NO.
SHEET OF -
SHEET NO
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ILI
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4 I 5
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1 1 2 3 1 4 I 5
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0
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OVERFILL 6" 1 11
FOR SETTLEMENT 411+
EMERGENCY
BYPASS 6' BELOW
SETTLED TOP OF DAM
NATURAL
GROUND
NOTE:
SEE NARRATIVE FOR
MORE DETAIL.
4'MINIMUM
SECTION VIEW �►
SMINIMUM
WASHSTONE 1'
THICK ON FACE
FROM TOE OF DAM 5'MINIMUM
TO WEIR. \
3.600 CIF / ACRE u2
2:1 SIDE
SLOPE MAX.
CROSS SECTION
Q TEMPORARY SEDIMENT TRAP
Practice 6.60
NOT TO SCALE
SCHEDULE 40
PVC END PVC VENT PVC PIPE
CAP PVC ELBOW PIPE
WATER SURFACE
PVC END o
CAP
SCHEDULE 40
PVC PIPE
ORIFICE
PVCT
FLEXIBLE PLATE
IPE
S IN HOSE PVC TEE
SIDE
00�BOTTOM SURFACE
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
PERSPECTIVE VIEW o WATER ENTRY
UNIT
SEE DENR STANDARDS & SPECS.
FOR COMPLETE DESIGN CRITERIA & MAINTENANCE
SK SKIMMER DETAIL
Practice 6.64
NOT TO SCALE
1 1 2 1 3
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
2' 14.0'
_ 3
18" ' 1
3 1-
O
SEE EROSION CONTROL CALCULATIONS FOR
VELOCITY CALCULATIONS.
TEMPORARY DIVERSION
DETAIL
Practice 6.20 NOT TO SCALE
M= 3
VARIES n= 0.03
3
LINED WITH REINFORCING MATTING AND SEED
PER SPECIFICATIONS OR SOD.
3: 1 GRASSED CHANNEL
N. T. S
�-4' MAX -�
NCDOT #5 OR
WASHED S
NCDOT #5 OR #57
WASHED STONE
1GE HARDWARE CLOTH
ESH OPENINGS)
2'
16"
HARDWARE CLOTH & GRAVEL
p DROP INLET PROTECTION
Ir PRACTICE 6.51
NOT TO SCALE
COASTAL'
SITE
DESIGN,PC
P.O. Box 4041
Wilmington, NC 28406
[phone] J
PUBLIC ROAD
6" MINIMUM
�.•..:•:
THICKNESS
�:,M00*0
•t`�-i-ii-�
COARSE
.`�:�•w�i!i!:
1 ..� TE.- SEE NARRATIVE \�GRAVEL CONSTRUCTION
FOR MORE IENTRANCEWIDTH
REQUIRED
TEMPORARY GRAVEL CONS . ..
® , NCEIEXIT DETAIL
PracticeI.
NTS
Lo
4'
qC,)
REFERENCE EROSION CONTROL
CALCULATIONS FOR SPECIFIC
OUTLET PIPE DIAMETER 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.
P-636
CULVERT
RIP RAP
DIMENSIONS
LXWXD
CLASS
QUANITY
C
8' X5' X1'
11
1.5 CY
D
8' X5' Xf
1I
1.5 CY
POND
10' X 9' X 1.5
H
5 CY
P-632
CULVERT
RIP RAP
aMENSIONS
LXWXD
CUSS
QUANITY
8
8' X 5' X 1'
H
1.5 CY
E
8' X 5' X 1'
9
1.5 CY
F
8' X 5' X 1'
9
1.5 CY
G
8' X 5' X 1'
6
1.5 CY
H
8' X 5' X 1'
6
1.5 CY
1
8' X5' X1'
6
1.5 Cy
15CY
POND
1O' X 9' X 1.5
6
OUTLET PROTECTION DETAIL
NOT TO SCALE
COMPACTED FILL OR
GRAVEL, EXTENSION
OF FABRIC AND WIRE
INTO THE TRENCH
FILTER
FABRIC
BACKFILL
MINIMUM 8"
THICK LAYER
OF GRAVEL
8"MINIMUM
V-TRENCH
6 FT.
CENTER
NOTE: r
...........
SEE NARRATIVE
FOR MORE DETAIL.
ISOMETRIC VIEW FILTER
FABRIC
EXTENSION OF
FABRIC AND WIRE
LINTI'l THE TRENCH
COMPACTED
FILL
% 8"MINIMUM
14"MINIMUM
SECTION
Practice 6.62
NTS
4"MINIMUM
SECTION
STEEL POST
I
H
I
* I No. Ct*12 I *
I
DES
I DRW
ICHK
RRE PROTECTION
BRANCH MANAGER
CHIEF ENG/ARCH
A
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p
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CONSTR. CONTR. NO.
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3
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LEGEND
— —20—
EX.
CONTOUR (MAJOR)
--- - - -
- EX.
CONTOUR (MINOR)
20
PR.
CONTOUR (MAJOR)
PR.
CONTOUR (MINOR)
EX.
STORM PIPE
PR.
STORM PIPE
0
PR.
AREA DRAIN
. ...
FLOW ARROW
QDESIGN
POINT
AREA(AC.)
LABEL
RUNOFF COEFF.
10-YR BASIN FLOW
(CFS)
APPROVED
NORTH CAROLINA ENVIRONMENTAL
MANAGEMENT COMMISSION
^IVISICN OF WATEK (QUALITY
$ o4b11G
0 20 40 b0
1 inch = 40 ft. Horizontal
5
I
❑,
E1
`,Ip111U4/I
CARtS
�': n U---/
DES I DRW ICHK
FIRE PROTECTION
BRANCH MANAGER
CHIEF ENC/ARCH
G A
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§~ o
g C/)(D x
a Iz c) w
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SCALE: AS INDICATED J
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CONSTR. CONTR. N0. N
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urn_
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
COASTAL
SITE
DESIGN,PC
P.O. Box 4041
Wilmington, NC 28406
[phone]
1
I
J
C
DES I DRW ICHK
FIRE PROTECTION
BRANCH MANAGER
CHIEF ENG/ARCH
a U ^
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WORK ORDER N0. - p
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NAVFAC DRAWING NO. EY
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5LOg0(ic"Gf�

DEVIA TIONS
FROM
DESIGN DRAWINGS:
DESIGN
ASBUILT STATE MIN.
70P OF GRATE 24.2
24.7
SURFACE AREA 17,933
17,224 12,253
EMERGENCY SPILLWAY 25.0
25.8
POND SUMMARY:
NCDENR/bWQ PERMIT # SWS-090116
I. IMPERWOUS AREA PERMITTED
194087 SF (443 ACRES)
2 NORMAL POOL SURFACE AREA
17,224 SF
3 NORMAL POOL ELEVA71ON
2.15
4. POND DEPTH (DEEPEST POINT)
7.5 FT
5. POND BOTTOM ELEVATION (DEEPEST POINT)
17.0
6. ORIFICE INVERT ELEVATION
23.5
Z OUTLET BOX CREST ELEVATION
24.7
8. STATE STORAGE VOLUME
2, 092 CF
9. 10.1 FT VEGETA70 SHELF
PRESENT
1O 10 FT ACCESS
PRESENT
It. FORE3AY
PRESENT
12 PRIMARY SPILLWAY MA77ON
24.7
13 EMERGENCY SPILLWAY ELEVATION
25.8
14. ORIFICE SIZE
2'
M NETR CUT CREST LENGTH
n/a
16. HEIR CUT ELEVATION
n/o
17. SIDESLOPES (TYPICAL)
J..1
18. INV. OF PIPES FROM OUTLET STRUCTURE
22.21
STATE WATER QUAUTY POND CONSIDERATIONS -
SURFACE AREA REQUIRED = 17,933 SF
SURFACE AREA PRONDED = 17,224 SF
1.5' STORAGE VOLUME REQUIRED = 14,081 OF
1.5' STORAGE VOI.UME PROVIDED - 25,088 CF
1.5' STORAGE DRANDONN TIME = 357 DAYS
EL= 24.7
- USEL 23.510
r- PERFORATED
PVC W1 GRAVEL
_V
FARRIY:ATFD GRATE TOP
INV=
23.5 INV= 22.21
12�
OFi GROUP
I
2 FT SUMP
FOR CLEANOIT
POND BOTTOM
ELEV= 170 SECTION VIEW
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
h/
15' RCP
OUTLET PIPE
A-
6"BASE
+26.90
+26.98
126.77
+26.89+22.$I-- \`�.♦♦ \\`��
322
'222.07 +
.\`� ♦♦\ "�\ +26.74
22,'7&
I/ l7 2.84+
1 +22.30,' RIP -RAP SPILLWAY
23.73 ; J jt 1/ f ! 1 , / -' \ `� \ `4\`? �� ♦ `� \`
if 1�r1 t! 1\\ � ,/' \ 7x �`� `� 2•��♦\�`�
ltr
11 / Ji 23.96
/t
+27.05 !f i 1/ 1/ 49
( ( //
\\ 41271.17//&-23 4
+22.b6&, `♦�♦Il`. 5.82 INV=2/1.82
I1/++16:50\ .\\ /9. \\ . 2.13 ``\ ♦�\ ♦\`� i /
�22.770
,\+1634 �\ \IB` `'�� \ \ ` `\\`` +26-8$
15"RCP •
4�23,78 .�`♦ OUTLET PIPE
3.50 `\ \\ `�z's� �\ ``� \� \ \�`� `-..� �� _ • 5'X5'X5.4' OUTLET STRUCTURE:
+23.41 �\ \ +16.at�, \ \ \ \`\ +zz:�a 7 5 �zss6 • TOP OF GRATE=24.7
\ rL INV = 19,32
+ z`ze3+ \\\♦ \�, `+ ♦� 2" ORIFICE INV = 23.50
\ \ \\ \.`. ^ \ \\`. 22.1 - \\ \
23. �� \ \ \\\♦ � \ `� .92 ♦♦\ \
.56 23.4 `� `�\\ \\\\\ \ �\ \ \ `., ♦♦\ 25.29 +26.83
16.72
23.49 /a' 3.02 \ \`� \♦♦\�`� \`�\ \ `� 22.25 ^`��` `
\ _ `
+26.65 f f/ �2�:G0
\\ \�\\ �\�\
` ` `µ�2`04 �`;♦\
`\\ +26.86
23.Da +23.9
22.86
\ \� \\`� `.`�
�\
�\\ ,` �. \1`�2.jif4
i
_
% j27/ZZ
�\`�\\
'A \\ `
W22.46\\\
�`� I I \\
1 +26.65
�.-
\\\\\\
4
/l
f724.0 / / 1 \ \ \ \
4-\23.
4.01 \ \ \ ��` ���
__tt6.32__.__.___+.ifi 1 1 4 _ i t
2#.13I / /
M / \ 1+24AO�..-58
\ \\ \\
`\ `\ ` ♦ --.
- --_ _-_�/ �.
+k2 3 t
+79�71 i
3.02y I q,' / \\ `\ \\ +2 2 /A,
` \-,- �..___-----____
\ �'22.27� __________-_YZ1.�-27__._-___
'I$72
_-__
__
20--_--', __ _ ___" _° !
-._
22.79 +
+26.88
1/
/
Y
\ ____________,r_.
___.__
r
-
i / 941
2.99 ---+26.80
+22.6' _ - -7
+26.64 ,/i // //// ,
ti7 // / j2
\_____________
�
24.03-------_ +2375
_____________
y3.+269
_23.72-__-_
�
24____________-__
/
/Y��
+19: 12`------------------------------------------------�
--.----�
--- _ -`
.--
.78
, / / ,' / ' ��
+25.83
+25;93,__.--26______________ +2bJ5
r
+26.55 // �/ // 23.00 ,/ ,� / / !i
+22.10,�� /� 44
/ +27i!57
+280� �/ ,�/ i i / 1 / 7 /
---` _
61
\/I
2.�8++22uS7
t I� / / T� 25.85 F
r( (/ J�
l-
frt�f It
N2 2 !t 1f t
+2k72" \ \t18.75 ,��/,'� ' +12 17�
l I t 2 gel \\� _.�`M158.3, i ///� 1
/
23.72 +22.68'--�-_._
//+25.37
- .•�/J�-'Z"2.8
\+26,79\ \` 2y 22.95 '- ___- +22.5.Y'
+27.82
\`ass`.
�♦�`,,,ytiQ6 l � /
\�• \`.
`-' �.-�__--f�37?Yi +26.E6
_`___
+27.5s------
TOP OF EMBANKMENT
EEVATION = 26.0
AS -BUILT WET DETENTION BA
EMERGENCY SPILL WA Y
FRON T VIEW
NOT TO SCALE
EMBANKMENT TOP = 26.0
EMERGENCY SPILLWAY EL = 25.8
AS -BUILT EMBANKMENT SECTION
NOT TO SCALE
+26.59
+26.64
NOTES
1. AS -BUILT LOCATIONS PERFORMED AND PROVIDED BY JOHN L PIERCE AND
ASSOCIATES, PA. DRAWING LABELED 'DETENTION POND RECORD DRAWING PREPARED
FOR MORTON TRUCKING OF NEW RIVER BEQ #636-
SIGNED AND SEALED BY JOHN L PIERCE L-2596
DATED 1-20-11
20 r r 20 40 Eli
I
LICENSE I¢' C-2710
COASTAL
SITE
DESIGN, PC
ENCINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
I-
ca
N
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to
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Ld
DATE: 11-21-11
HORZ. SCALE I'- 20'
VERT. SCALE: N/A
DRAWN BK RLW
CHECKED BK HSR
PROJECT NO. 08-0198-636
DRAWING NO: 08-0198-P636
1
Shoat No. Of

DEVIA TIONS
FROM
DESIGN DRA WINGS:
DESIGN
ASBUILT STATE MIN.
iOP OF GRATE 24.2
14.7
SURFACE AREA 17,933
17,224 12,253
EMERGENCY SPILLWAY 25.0
25.8
POND SUMMARY.•
NCDENR/DWQ PERMIT # SWB-090116
1. IMPERVIOUS AREA PENITi0
193087 SF (4.43 ACRES)
2 NORMAL POOL SURFACE AREA
17,224 SF
3 NORMAL POOL ELEVATION
23.5
4. POND DEPIH (DEEPEST POINT)
7.5 FT
5. POND BOTTOM E EVA71ON (DEEPEST POINT)
17.0
6. ORIFICE INVERT EEVARON
23.5
7. OUTLET Box CREST S"ATON
24.7
8 STATE STORAGE VOLUME
25,092 CF
9. 10.1 FT WGETAiED SHELF
PRESENT
la 10 FT ACCESS
PRESENT
i1. FOREBAY
PRESENT
12 PRIMARY SPILLWAY ELEVATION
24.7
13 EMERGENCY SPILLWAY ELEVATION
25.8
14. ORIFICE SIZE
2"
15. WEiR CUT CREST LENGTH
n/a
16. ®ER CUT MARON
n/a
17. SIDESLOPES (TYPICAL)
3.1
I& INV. OF PIPES FROM OUiLET STRUCTURE
2221
STATE WATER QUALITY POND CONSIDERATIONS -
SURFACE AREA REQUIRE) = 17,933 SF
SURFACE AREA PROVIDED = 17,224 SF
1.5' STORAGE WLUME REQUIRE) = 14,061 CF
1.5' STORAGE VOLUME PROVIDE) = 25,086 CF
1.5' STORAGE DRAWOOW 71ME = 157 DAYS
N
3
EL= 24.7
FABRICATED GRATE TOP
15" PCP
OUTUT PIPE
INV=
�.
WSEL = 23.5
23.5 INV= 22.21
10
12' .'GONC.. T
3
OR GROUT 4
i 2.0" PERFORATED
6"BASE
PVC GRAVEL
AND FABRIC FILTER
2 FT SUMP
FOR CLEANOUT
POND BOTTOM
ELEV= 17.0 SECTION VIEW
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
+ 26.90
+ 26.98
+26,77
+26.69+22..81-_.__._
i
22.07 ��+26.74
/2223 +22',7a
y�"�
l 1 2�!0 ��.'j_.__" t22-t1 ~ \���•� fie,..
126,95
23-73 RIP -RAP SPILLWAY
f
t t rl f r t� I •` �. tr 2 ��
26 50
i2277 14��'t412 I - , =.26.85
1,+16.34
7l j tr I/ a
' t'7 ffl/r
/ f
r r
,1 1 :-2''96
!' r' r
7 11 t
If
t
49
�\ 4)27p1711 r+78 4+
l
+26.65 Y' l +'2fi SO ..A ��� ��. �� ti 2-2.04 v�\A +26A6
22-86 "."#23.04 +23.0.
+23.90 ����� �ti �w tT C1 \` .� +t22 7 1 1' i
J j2�n0f/ /'� "24 �� �t h8 `.�`� �•.� +.-JS '� t �� 1 't2406 �i
J `
zZ3s ` e 46 \ ', I t /( +2s-65
23,
)k- 4-0 �..-_ _ _ 4 16 72
'�' ,' % t ti' J \ ♦ �� 1+2d-t0 �. \ _ +16oZ12 7 11 t
Ji+19V9 �l i �t \�\ '`�� _ �. ^_� _ -0 _ _ �-4 XL 3 1 / t +26.88
l 3.02 y l q, f ti ` ., '2r2a,. ' - - _ 37.1-2t = _,Y + /i f7
+2 .58� l f i V +� .2� ��.. �� - -' . - --.. 22.79 1/ l +26.80
+. .22.c'
+28-&4 ti2'94t7 '2.39 2284 24 ]
___.
� / tJ
24.03 k -'' - -
+2699 i i /' f i' i .-" 17'`��
J // J/+23.A _
23.00 +25.83 i-25.93
/ i + 2, .10
+25.44
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+26t80 2/' /� �� i J / ��' J i 1 +2 .57
l -
23.
i
i J
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l 228+ 1 f {
tr' I +2a,67 �' 1 J t `� i I r / i 2".65
+18.81 �, Iz?.a{r
, A ) / "A 21 .2
t 1 +1 18,37zl`7z ` at8-75 ,' /, J ' +12, 17�
-__ r
1 �I t�23.72 �,. 22.88"--_.-�; �� //ice+28.d7
+2B 74���` 22.95 "__ __}}22-af'"
+27.82 ��.� � � ``' _ _�22.91 .-'° �3:'t/ j
i
+2686
-�27.t9
AS -BUILT WET DETENTION BASIN
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
-
`�
? 9*
Jtgro +16Az>`., +22'6Ei 7
23.423,4
�
fi
1672
,a.24-
23.d9 J ..,A �. 22.25
IE=
EMBANKMENT TOP = 26.0
EMERGENCY SPILLWAY EL = 25.8
TOP OF 011TI FT ROY = 94 7 STATF STORAOF = 95 OQ9 CF
AS -BUILT EMBANKMENT SECTION
NOT TO SCALE
INV= 21.82
15"RCP ,
OUTLET PIPE
5'X5'X5.4' OUTLET STRUCTURE:
,zs.9s • TOP OF GRATE=24.7
l 2 INV = 19.32
2" ORIFICE INV
= 23.50
i
1
25.29 �, -26.63
+ 26.59
+ 26.64
NOTES
1. AS -BUILT LOCATIONS PERFORMED AND PROVIDED BY JOHN L PIERCE AND
ASSOCIATES, PA. DRAWING LABELED "DETENTION POND RECORD DRAWING PREPARED
FOR MORTON TRUCKING OF NEW RIVER BEQ ,#636"
SIGNED AND SEALED BY JOHN L PIERCE L-2596
DATED 1-20-i1
I
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: 11-21-11
HORZ SCALE: 1"- 20'
VERT. SCALE., N/A
DRAWN BY.• RLW
CHECKED BY.• HSR
PROJECT NO: 08-0198-636
DRAWING NO: 08-0198-P636
E
No.
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