SW8100201_APPROVED PLANS_20170209

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 ) o o 2,D I
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
20 1-7 DZo
YYYYMMDD

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CODE ID. NO. SIZE D
e� . NV D SCALE: AS INDICATED
MAXIMO NO. -
JOB ORDER NO. -
WORK ORDER NO. -
CONSTR. CONTR. NO.
N40085-1 1 -C-4021
COASTAL NAVFAC DRAWING NO, r
SITE SHEET OF X"Ra am an O
Eio- o Lo
DESIGN,PC SHEET NO. N
W.)
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1 1 2
NO TES
1. ALL BUILDING ROOF DRAINS MUST BE DIRECTED INTO THE STORM DRAINAGE COLLECTION
SYSTEM OR INTO THE STREET/PARKING LOT.
2. PORTABLE PUMP TO BE USED TO DRAIN POND IN CASE OF EMERGENCY. PUMP TO BE
PLACED ON TOP OF BERM WITH SCREEN ATTACHED TO HOSE INLET AND COVERED WITH STONE.
HOSE OUTLET TO DRAIN ACROSS STABLE UPLAND AREA SUMCIENT TO RESTRAIN EROSION.
J. POND SIDESLOPES CAN BE STABILIZED WITH HYDRO -SEED
3
RADIUS = 220 FT
ENGTH = 42.0 FT
J
FT
�� �•AS/OF�y�� RF6TH=32.8f:T
FOREBAY 1 BOTTOM = 10.
RADIUS = 12.0
r
LENGTH - 44.2 FT
-„, 20.6
f w 10:1
� SI /, ,
;RADIUS - 220 FT
J. 1 SIDESLOPE� (LENGTH = 3Z1
I I
,FOREBAY 2 BOTTOM = 10. '
RADIUS = 22.0• FT /
LENGTH = 50.0 FT RADIUS
LENGTH = 43 $
RADIUS = 220 FT l 1;
LENGTH -=
, 56.5 FT- �
TEMPORARY POOL ELEVATION - 16.3
SURFACE AREA 0 ELEV. 16.3 = 44,645 SF ' - -
4
. -' - �ra STORAGE ®ELEV. 16.3 = 43,871 OF -
' �V• � _ _.� � , `• ,RADIUS 22.0 FT
LENGTH - 25.0 FT
a
.� POND BOTTOM = 8.0 l x,
j
{ RADIUS = 22.2 FT, PERMANENT POOL ELEVATION = 15.2 w'
)+ \(ENOH = 33.7 FT
SURFACE AREA 0 ELEV. 15.2 = 27,880 SF _ _ . ,TI' jJ
r-.
BORING j1
SHWT DEPTH = 24"
GROUND ELEV. = 17.5 ti it `T I
SHWT ELEV - 15.5 Y %
" 1. � '�,� - iia � , l � i � ' �•-. - - - -
H
(i
r
RADIUS =
LENGTH = 54. ` \
J
I \ J ,
EMERGENCY SPILLWAY �\
i
40 IE _ 16.E
1.5 FT PEEP
, 1 �� PLACED UNDIEX NONWOVEN ER RIP RAP
FABRIC
59E DETAIL THIS SHEET
1
I
OUTLET STRUCTURE I '
J
-- 1.5 FT DEEP- -
5 CY CL 11 RIPRAP % �•
\\ _ SEE DETAIL THIS SHEET RADIUS = 23.5 FT"" r '
.. LENGTH = 504'f.� �� /- _� w /
AN17-SEEP COLLAR
`\
1• SEE DETAIL THIS SHEET {T';
o;`
39 LF 18" RCP
1 inch = 30 ft. Horizontal E = 150
1.5 CY CL 11 RIPRAP
CE07EX NONWOVEN FILTER FABRIC rf ,I 1
PLACED UNDER RIP RAP
WET BASIN A DETAIL
NOTES:
1. TEMPORARY SKIMMER TO BE INSTALLED ON PRIMARY OUTLET STRUCTURE BOX
AND TO REMAIN IN PLACE UNTIL SITE IS PERMANENTLY STABILIZED PER NCDENRItQS
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 SITE IS STABLE
90° ELBOW DOWN
8"BELOW WSEL
WSEL = 15.2
SB 3
I
POND BOTTOM
ELEV= 8.0
1
0 ��PiE SOP
f PBR� pCV
5
2 FT SUMP
FOR CLEANOUT
INV=
15.2 INV= 15.2
1
18" RCP
OUTLET PIPE
-�
6"BASE 4 FT x 4 FT PRECAST CONCRETE BOXES
NC PRODUCTS 4848 OR EQUIVALENT
1
10
3.5" PERFORATED
PVC W/ GRAVEL
AND FABRIC FILTER EL- 11.7
12' GONC.
OR GROUT
SKIMMER = 4.0" SKIMMER WITH 3.4" ORIFICE DIAMETER
SECTION VIEW
WET BASIN A
OUTLET STRUCTURE DETAILS
NOT TO SCALE
CALCULATION SUMMARY FOR DWQ:
IMPERVIOUS AREA PERCENTAGE:
TOTAL AREA DRAINING TO POND = 569,142 SF (13.07 ACRES)
TOTAL IMPERVIOUS = 333,858 SF (7.66 ACRES)
PERCENT IMPERVIOUS = 58.77
REQUIRED SURFACE AREA:
AT 5.0 FT OF DEPTH, 90% TSS REMOVAL, SA/DA = 4.19
0.0419 X 569,142 = 23,863 SF SURFACE AREA REQUIRED
SURFACE AREA PROVIDED = 27,880 SF
1.5 INCH VOLUME:
I = 58.7
Rv = 0.05 + 0.009 x I = 0.05 + (0.009)(58.7) = 0.58 IN/IN
MINIMUM VOLUME = DESIGN STORM x Rv x DRAINAGE AREA
(1.5/12)(0.58)(13.07) = 41,116 CF
1.5 INCH STORAGE VOLUME AT ELEVATION 16.3 = 43,871 CF
2 TO 5 DAY DRAW DOWN:
AVERAGE HEAD FROM STORAGE ELEVA77ON
TO ORIFICE INVERT = (16.3 - 15.2) / 3
= 0.37 FT
3.5 INCH PVC ORIFICE: Q = CA(2gh)-1/2
= 0.6(0.6678)(64.4 X 0,37)" 1/2
= 0.19470 CPS
T = 225,324 SECONDS = 2.61 DAYS
FOREBAY REQUIREMENTS:
MINIMUM FOREBAY VOLUME = 20% OF PERMANENT POOL VOLUME
= 0.20 x 115,274 CF
= 25,076 CF
TOTAL FOREBAY VOLUME PROVIDED =
FOREBAY 1 = 16,252 CF
FOREBAY 2 = 8,972 CF
TOTAL = 25,224 CF
23 FT
TOP OF EMB.
20 FT ELEVATION =
WET BASIN A
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
/ ALL SLOPES
3:1 MAXIMUM
10' 1O'min. 21.5'min. SEE PLAN o
o a
POND ZC
FOREBAY VOLUME II o
OF REQUIRED
WSEL = 15. STORAGE, TYPICAL
gyp. �o. OP w N
3'min. J o
Qe BOTTOM = 10.0
1y0 OUTLET
^j• ,Bot PROTECTION
�o AS ON PLANS
(TYPICAL AT ALL STORM OUTFALLS TO POND)
FOREBAY SECTION DETAIL
NOT TO SCALE
WETLANDS VEGETATION NOTE:
THE FOLLOWING SPECIES OF WETLANDS VEGETATION ARE SUITABLE FOR
PLANTING ALONG THE 10:1 VEGETATED SHELF.-
- SAGIrrARIA LA71FOLIA (COMMON ARROWHEAD)
- SAGITTARIA LANCIFOLIA (DUCK POTATO)
- SAURURUS CERNUUS (LIZARDTAIL)
- PELTANDRA WRGINICA (ARROW ARUM)
IF ONE OR MORE OF THE SUGGESTED SPECIES IS UNAVAILABLE, APPROPRIATE
WETLANDS WGETA71ON COMMON TO THE COASTAL NORTH CAROLINA REGION
MAY BE SUBS717117ED.
WELDED FABRICATED TRASH
RACK W/SQUARE OPENINGS
SQUARE OPENINGS _< 5-
.SEE DETAIL
THIS SHEET
FOR
TRASH RACK
0
�n
6" 6" j a
f 5'- 0"
GRATE PLAN VIEW
BOX PLAN VIEW
WET BASIN A
OUTLET STRUCTURE DETAILS
NOT TO SCALE
5
NOTE: COLLAR TO BE POURED AFTER 0
PIPES ARE IN PLACE. I�
REINFORCING AS NECESSARY.
n z 5'
o
d
1.5 �
MIN
WET BASIN
ANTI -SEEP COLLAR
NOT TO SCALE
a
LICENSE # C-2110
COASTAL
SITE
DESIGN,PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
[phone]
VARIES 10' 14' 31'
16'
EMBANKMENT TOP= 17.O�SET
voi TLED;, = 17.25 (CONSTRUCTED)
u EMERGENCY SPILLWAY = 16.5
0o y9f (STATE STORAGE)/ TOP OF GRATES = 16.3 STATE STORAGE = 43,871 CF
3 18
W
NORMAL WSEL= 15.2 MIDDLE OF 10:1 SHELF
QP o RCP _ ��� _ ._ BOTTOM OF 10.- 1 SHELF EL= 14.7
ANTI -SEEP COLLAR, BOTTOM EL= 13.6
BOTTOM SWM STRUCTURE EL= 11.7
ANTI -SEEP SEDIMENT CLEANOUT EL. = 9.0
COLLAR, IE= 15.2
SEE DETAIL BOTTOM EL 6.0
30' 10'
WIDE
10:1 SHELF
VARIES _ 45'
I RECEIVED'
EMBANKMENT SECTION A
NOT TO SCALE BX._
A
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CODE ID. NO.
SIZE
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SCALE AS
INDICATED
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MAXIMO N0.
JOB ORDER NO. -
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"'Ca''bre
WORK ORDER NO. -
E`
CONSTR. CONTR. NO,
N40085-09-R-3245
Calibre Engineering, Inc.
NAVFAC OTFAwING NO.
C:D
9090 South Ridgeline Blvd, Suite 105
SHEET OF 328
N
Highlands Ranch, CO 80129 [phone]
SHEET NO
}
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www.calibre-engineering.com
C - 5 O
Construction Management Civil Engineering Surveying
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1 1 2 1 3
IE = 12.0 193 LF 24" CL 111 RCP
i
J.5 Y CL II Lp VATH F.E.S.
GE X N NWOVEN FIL R_FABRIC
PL CEO DER RIP RAP
' � -� ANTI -SEEP COLLAR
SEE DETAIL TNIs SHEET = I
RADIUS ,0
LENGTHLENGTH I
SLOPE. DI .0' T
E - 5 T
I
- 8.
i
106 LF 24" RCP
I
WITHrFES. - ht�
�o
FOREBAY B TTOM
= 8.0
W
IW
m
24" IF 12.5
m
i POND BOTTOM = 6.0
OUTLET STRUCTURE b
NOTES: 15CFT DEEP IPRAP
1. ALL BUILDING ROOF DRAINS MUST BE DIRECTED INTO THE STORM DRAINAGE COLLECTION SEE DETAIL THIS SHEET ✓ 'n
SYSTEM OR INTO THE STREET/PARKING LOT.
�-2.
2. PORTABLE PUMP TO BE USED TO DRAIN POND IN CASE OF EMERGENCY. ,PUMP, TO BE RADIU
-_---- PLACED ON TOP OF BERM WITH SCREEN ATTACHED TO HOSE INLET AND COVERED WITH STONE LE 1. T I
HOSE OUTLET TO DRAIN ACROSS STABLE UPLAND AREA SUFFICIENT TO RES7RAIN EROSION.
3. POND SIDESLOPES CAN BE STABILIZED WITH HYDRO -SEED ;n=,
,SHW'T BQRINC T_ )0 REPOR8 R-12-10 T +
0 10 20 40 GR ND a�V. = 175 "' E
SH DEPTH = 0
EL VV`= 75
1 inch = 20 ft. $orizontal; ` ORARY POOL ELEVATION = 136
SURF C EA ®.ELEV. 13.6 - 17,932 SF = .8
0 AGE ® ELEV. 13.6 = 17,422 OF 9�FX
PERMANENT POOL ELEVATION = 12. /
S R CE AREA 0 ELEV. 12.5 = 13,753 SF - -
i
RADIUS = 42.0 FT
`\ LENGTH = 97.7 FT
I
WET BASIN C DETAIL
3 MIN
TOP OF EMBANKMENT 1
ELEVATION 76,0
I �'\
y';
3' TUCK\
T, EL j EL 6
LLDPE LINER
4" CLEAN SIFTED SAND \ r '
1. RECOMMENDED LINER - 40 MIL LLDPE LINER
2. OVER EXCAVATE BOTTOM OF POND 4" AND FILL
WITH CLEAN SIFTED SAND.
3. CALL MANUFACTURE REPRESENTATIVE TO INSPECT
SITE ONCE EXCAVATION
OF BASIN IS COMPLETE
4. CALL MANUFACTURE REPRESENTATIVE TO INSPECT
S1TE WHEN FABRIC
IS BEING PLACED.
5. CLEAN SCREENED MATERIAL TO BE USED FOR BACKFILL.
POND and FOREBAY LINER DETAIL
NOT TO SCALE
NOTES:
1. TEMPORARY SKIMMER TO BE INSTALLED ON PRIMARY OUTLET STRUCTURE BOX
AND TO REMAIN IN PLACE UNTIL SITE IS PERMANENTLY STABILIZED PER NCDENR/LQS
SEDIMENTATION AND EROSION CONTROL PERMIT. SEE SKIMMER DETAILS FOR INSTALLATION.
2. GRADE WILL BE 20:1 ONLY IN FRONT OF OUTLET BOX. REMAINING SHELF SHOULD BE
10: 1. PP IS THE CENTER OF THE 10:1 SHELF. 3
1
EL= 15.0
,.. GRPSE 10P
WELDED AR
TRASH RACK. FgORO ON
BOLTED IN PLACE EL= 14.5
90' ELBOW DOWN 2.0 F7 WEIR 4
8"BELOW WSEL EL= 13.6 4"
2 FT SUMP 24" RCP
FOR CLEANOUT OUTLET PIPE
5 INV= - �
WSEL = 12.5 12.5 1 INV=12.5 _
1
S B 20 1
3 12" GONC.
1.75" PERFORATED OR GROUT a e
FABRICATE? GRAY TOP § /b II
EL13.6 °i-�"r�
2.0 FT WEIR
EL= 12.5 O
~7. 75"
FRONT VIEW
WEL ED BAR
RA H RACK
BOL D IN PLACE
1 _
PVC W/ GRAVEL 6"BASE 4 FT x 4 FT PRECAST CONCRETE BOXES
AND FABRIC FILTER EL= 9.0 NC PRODUCTS 4548 OR EQUIVALENT
POND BOTTOM
ELEV= 6
SECTION VIEW SKIMMER = 2.5" SKIMMER WITH 2.3" ORIFICE DIAMETER
WET BASIN C
OUTLET STRUCTURE DETAILS
NOT TO SCALE
CALCULATION SUMMARY FOR DWQ:
IMPERVIOUS AREA PERCENTAGE:
TOTAL AREA DRAINING TO POND = 680,697 SF (15.63 ACRES)
TOTAL IMPERVIOUS = 115,371 SF (2.65 ACRES)
PERCENT IMPERVIOUS = 16.99
REQUIRED SURFACE AREA:
AT 4.0 FT OF DEPTH, 901- TSS REMOVAL, SA/DA = 1.49
0.0149 X 680,697 = 10,176 SF SURFACE AREA REQUIRED
SURFACE AREA PROVIDED = 13,753 SF
1.5 INCH VOLUME:
I = 16.9
Rv = 0.05 + 0.009 x 1 = 0.05 + (0.009)(16.9) = 0.20 IN/IN
MINIMUM VOLUME = DESIGN STORM x Rv x DRAINAGE AREA
(1.5/12)(0.20)(15.63) = 17,235 CF
1.5 INCH STORAGE VOLUME AT ELEVATION 13.6 = 17,422 CF
2 TO 5 DAY DRAW DOWN:
AVERAGE HEAD FROM STORAGE ELEVATION
TO ORIFICE INVERT = (13.6 - 12.5) / 3
= 0.37 FT
1.75 INCH PVC ORIFICE: Q = CA(2gh)^1/2
= 0.6(0.01669)(64.4 X 037)^1/2
= 0.04868 CFS
T = 357,921 SECONDS = 4.14 DAYS
FOREBAY REQUIREMENTS:
18 - 22 % ACCEPTABLE
MINIMUM FOREBAY VOLUME = 187 OF PERMANENT POOL VOLUME
= 0.18 x 29,982 CF
= 5,397 CF
MAXIMUM FOREBAY VOLUME = 22% OF PERMANENT POOL VOLUME
= 0.22 x 29,982 CF
= 6,596 CF
\ TOTAL FOREBAY VOLUME PROVIDED = 5,440 CF
7
4 5
WETLANDS VEGETATION NOTE:
THE FOLLOWING SPECIES OF WETLANDS VEGETATION ARE SUITABLE FOR
PLANTING ALONG THE 10:1 VEGETATED SHELF.:
PLANTS SUITED FOR SHELF THAT'S UNDERWATER
- SAGITTARIA LANCIFOLIA (BULL TONGUE)
- SAGITTARIA LA71FOLIA (DUCK POTATO)
- SAURURUS CERNUUS (LIZARDTAIL)
PLANTS SUITED FOR SHELF THAT'S ABOVE WATER
- ASCLEPIAS INCARNATA (SWAMP MILKWEED)
- CAREX TENERA (QUILL SEDGE)
- CHELONE GLABRA (WHITE TURTLEHEAD)
SF OF 10.'1 SHELF UNDER WATER = 1,710 SF / 200 = 8.6 X 50 = 430 FLANTS REQUIRED
430 / 3 = 143 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE PLANTED
SF OF 10:1 SHELF ABOVE WATER = 1,710 SF 1200 = 8.5 X 50 = 430 PLANTS REQUIRED
430 / 3 = 143 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE PLANTED
IF ONE OR MORE OF THE SUGGESTED SPECIES IS UNAVAILABLE, APPROPRIATE
WETLANDS VEGETATION COMMON TO THE COASTAL NORTH CAROLINA REGION
MAY BE SUBSTITUTED. SEE CH 9 OF STATE STORMWATER BMP MANUAL FOR LIST OF OTHER
RECOMMENDED WETLANDS PLANTS.
(TYPICAL AT ALL STORM OUTFALLS TO POND)
ALL SLOPES
3:1 MAXIMUM
10' 10'min. 21.5'min, SEE PLAN o
_ o a
FOREBAY VOLUME II o
POND OF REQUIRED
WSEL = 12.5 OF
TYPICAL
w vzi SAP/
OP w
3 min. z
yoQe _ z BOTTOM = 8.0
o _ _ OUTLET
PROTECTION
to AS ON PLANS
WET BASIN C
FOREBAY SECTION DETAIL
NOT TO S:.ALE -
A
WELDED FABRICATED TRASH
RACK W/SQUARE OPENINGS
SQUARE OPENINGS _< 6"
-II 4-0"
CI. SEE DETAIL o
o THIS SHEET
FOR "0
TRASH RACK
ICI_- J
0" 2.0 FT WEIR
5'-
GRATE PLAN VIEW
BDX PLAN VIEW
WET BASIN C
OUTLET STRUCTURE DETAILS
NOT TO SCAL-
NOTE COLLAR 70 BE POURED AFTER
PIPES ARE IN PLACE.
REINFORCING AS NECESSARY.
z 5'
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MIN
WET BASIN C
ANTI -SEEP COLLAR
NOT TO SCALE
Abi
LICENSE § C-2710
.COASTAL
I
SITE
,DES IGN,PC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIDENTIAL
P.O. Box 4041
Wilmington, NC 28406
1 (910) 791--4441
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VARIES 10' 14' 31'
16'
N EMBANKMENT TOP= 15.0 (SETTLED), = 15.25 (CONSTRUCTED
TOP OF GRATES = 14.5
=o _ (STATE STORAGE)l WEIR CUT = 13.6 STATE STORAGE = 17,422 CF
w TOP OF 10:1 SHELF EL= 13.0
NORMAL WSEL_ 12.5 (MIDDLE OF 10.1 SHELF) �
0 106 LFj 1 24" BOTTOM OF 10. 1 SHELF EL= 12.0
RCP I' _
/ ANTI SEEP REEP COLLAR, BOTTOM EL. 10.7
BOTTOM SWM SUC7URE EL= 8.9
ANTI -SEEP SEDIMENT = 7
COLLAR, IE= 12.51
SEE DETAIL BOTTOM EL 6
30'
WIDE
10: 1 SH-_LF
VARIES 45'
WET BASIN C
EV BA NKMEN T SECTION
NOT TO SCALE
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JOB ORDER NO.
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WORE ORDER NO.
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CD
CONSTR. coNrR. No-
N40085-09-R-3245
CD_
Calibre Engineering, Inc.
NAVFAC DRAWING NO
CD
N
9090 South Ridgeline Blvd, Suite 105
SHEET OF
328
Highlands Ranch, CO 80129 [phone]
SHEET NO
r
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www.calibre-engineering.com
C -
5 1 0
Construction Management Civil Engineering Surveying
CD
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5
of
ci
LF.15- CL III a
F. E.5'`
LENGTH = 8
ram,
BERM ELEV.
- 10, 65 -
FOREBAY A N B£Ry ELEV.
96TTOM 10.65
RADII
LENGTH 2 FT
.RADIUS = 22
\ 1 ^RADIUS = 30.0 F
LENGTH = g3A FT ADI =
h I
I
I I I
I
1
I
I t .
,r r
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_ I t
D ' 1.5
G _ ?t6.0 } 'E
t !
I
1E = 7.34
I +
t ,
BORING
:LEV. f8.
IEPT�= 24" I
LE . = 16.3 RADIUS = 1.5 F I �'
LENGTH = F I `�
I
� l I
I
I I �
\ AD1US
5H` BORING 1-10
` 17,2
NPT�
LEV ' 1.
POND 80TTOM = 4 RA U _ 47.6 FT
\ N
M7VAR
SURFACEAREA 0 ENV 1124424 SF
\ `'�.� STORAGE 0 ELEV. 11.7 = 18,613 CF \
EMERGENCY SPILLWAY
s IE = 13.0 \ \ \\
\ ` 20 FT WIDE X 1.5 FT DEEP \ PERMANENT POOL ELEVATION
GEOTEX NONWOVEN FILTER FABRIC = i3
PLACED UNDER RIP RAP SURFACE AREA ®ELEV. 10.65 ,976;'SF �I
\ \` SEE DETAIL THIS SHEET
4\
StIWT`BOf�ING 1-9 1)0
\ \ 4 ROrJND ELEV, = 16.5 I \
o� SHWT DE_PIH ` 16" \
I
i
NOTESlow
BUILDING ROOF DRAINS MUST BE DIRECTED INTO THE STORM DRAINAGE rt0ii\77ONSYSTEM OR INFO THE STREET/PARKING LOT.' � \ �2. PORTABLE PUMP TO BE USED TO DRAIN POND IN CASEOF EMERGENCY. PUMP
PLACEIJ ON TOP OF BERM WITH SCREEN ATTACHED TO NOSE INLET AND COVERED WITH STONE. \ \.
HOSE OUTLET TO DRAIN ACROSS STABLE UPLAND AREA SUFFICIENT TO RESTRAIN EROSION., \ \
\ RADIUS - D•
J. POND OESLOPES CAN BE STABILIZED NTH HYDRO -SEED \LENGTH = 12 .
1 \ \
0 10 20 \!40
\
--1 inch - 20 ft. Horizontal
!`
F_
WET BASIN B DETAIL
NOTES.
1. TEMPORARY SKIMMER TO BE INSTALLED ON PRIMARY OUTLET STRUCTURE BOX
AND TO REMAIN IN PLACE UNTIL SITE 1S PERMANENTLY STABILIZED PER NCDENR/LQS
SEDIMENTATION AND EROSION CONTROL PERMIT_ SEE SKIMMER DETAILS FOR INSTALLATION.
2. GRADE WILL BE 20: 1 ONLY I FRONT OF OUTLET BOX. REMAINING SHELF SHOULD BE
10. 1, PP IS THE CENTER OF THE 10: 1 SHELF.
EL= 13.0
10?
�0
F'I = f n F A�R�cP
90' ELBOW DOWN
8 "BEL 0 W WSEL
7-7 WSEL = 10.65
SB 3
POND BOTTOM
ELEV= 4.0
2 0 FT WEIR
EL= 11.7
- 5'
I�
20
12.0" PERFORATED
PVC W/ GRAVEL EL= 7.15
AND FABRIC FILTER
2 FT SUMP • 18" RCP
FOR CLEANOUT OUTLET PIPE
IN V=
10.65 INV= 10.65
GONG. OR
OR GROUT e
6"BASE
F
EL= 11.7
Al 1 IS
60 LF 78" RCP
F.f.S't 4 '
ANTI -SEEP COLLAR IE _ .0
SEE DETAIL THIS SHEET 1.5 CY CL 11 RIP P
GEOTEX NONWOVEN RLTER FAB IC I I I
PLACED UNDER RIP R P
GRA Tip TOP
EL= 12.0 I
WELDED BAR
TRASH RACK
BOL O IN PLACE
2.0 FT WEIR
EL= 10.65
2.0.
PVC
FRONT VIEW
4 FT x 4 FT PRECAST CONCRETE BOX
NC PRODUCTS 4848 OR EQUIVALENT
SECTION VIEW SKIMMER = 2.5" SKIMMER WITH 2.5" ORIFICE DIAMETER
WET BASIN B
OUTLET STRUCTURE DETAILS
NOT TO SCALE
�17
3' MIN TOP OTION BANK MENT
FLE Y, J - -�•jf
3' TUCK
EI-EV _ 4
UDPL LINER
4" CLEAN SIFTED SAND
1 RECOMMENDED LINER - 46 MIL LLOPE LINER
2. OVER EXCAVATE BOTTOM OF POND 4" AND FILL MITI CLEAN SIFTED SAND
3 CALL MANUFACTURE REPRESENTATIVE TO INSPECT SITE ONCE EXCAVATION
OF BASIN IS COMPLETE
4 CALL MANUFACTURE REPRESENTATIVE TO INSPECT SITE WHEN FABRIC
IS BEING PLACED.
5. CLEAN SCREENED MATERIAL TO BE USED FOR II
POND and FOREBAY LINER DETAIL
NOT TO SCALE
23 FT
TOP OF EMBANKMENT
ELEVATION = 14.0
20 FT
TOP OF 11P RAP
WET BASIN B
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
WETLANDS VEGETATION NOTE:
THE FOLLOWING SPECIES OF WETLANDS VEGETATION ARE SUITABLE FOR
PLANTING ALONG THE 10.1 VEGETATED SHELF.•
PLANTS SUITED FOR SHELF THATS UNDERWATER
- SAGITTARIA LANCIFOLIA (BULL TONGUE)
- SAGITTARIA LA TIFOLIA (DUCK POTATO)
- SAURURUS CERNUUS (LIZARDTAIL)
PLANTS SUITED FOR SHELF THATS ABOVE WATER
- ASCLEPIAS INCARNATA (SWAMP MILKWEED)
- CAREX TENERA (QUILL SEDGE)
- CHELONE GLABRA (WHITE TURTLEHEAD)
SF OF IO: I SHELF UNDER WATER = 2,480 5F / 200 = 12.4 X 50 = 620 PLANTS REQUIRED
620 / 3 = 207 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE PLANTED
SF OF 10:1 SHELF ABOVE WATER = 2,480 SF / 200 = 12.4 X 50 = 620 PLANTS REQUIRED
620 / 3 = 207 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE PLANTED
IF ONE OR MORE OF THE SUGGESTED SPECIES IS UNAVAILABLE, APPROPRIATE
WETLANDS VEGETATION COMMON TO THE COASTAL NORTH CAROLINA REGION
MAY BE SUBSTITUTED. SEE CH 9 OF STATE STORMWATER BMP MANUAL FOR LIST OF OTHER
RECOMMENDED WETLANDS PLANTS.
CALCULATION SUMMARY FOR D WQ:
IMPERVIOUS AREA PERCENTAGE:
TOTAL AREA DRAWING TO POND = 287,496 SF (6.60 ACRES)
TOTAL IMPERVIOUS = 139,856 SF (3.21 ACRES)
PERCENT IMPERVIOUS = 48.6%
REQUIRED SURFACE AREA:
AT 4.0 FT OF DEPTH, 90% TSS REMOVAL, SAIDA = 4.19
287,496 X 0.0419 = 12,051 SF SURFACE AREA REQUIRED
SURFACE AREA PROVIDED = 13,976 SF
1.5 INCH VOLUME:
I
Rv = 0.05 + 0.009 x 1 = 0.05 + (0.009)(48.6) = 0.49 IN/IN
MINIMUM VOLUME = DESIGN STORM x Rv x DRAINAGE AREA
(1.5/1.2)(0,49)(287,496) = 17,531 CF
1.5 INCH STORAGE VOLUME AT ELEVATION 11.7 = 15,613 CF
2 TO 5 DAY DRAW DOWN:
AVERAGE HEAD FROM STORAGE ELEVATION
TO ORIFICE INVERT = (11.7 - 10.65) / 3
= 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 = 299,651 SECONDS = 3.47 DAYS
FOREBAY REQUIREMENTS:
MINIMUM FOREBAY VOLUME = 20% OF PERMANENT POOL VOLUME
= 0.20 x 48,807 CF
= 9,761 CF
TOTAL FOREBAY VOLUME PROVIDED:
FOREBAY A = 5,134 OF
FOREBAY 8 = 4,986 CF
TOTAL = 10,120 CF
7
NOTE. COLLAR TO BE POURED AFTER 6
PIPES ARE IN PLACE.
REINFORCING AS NECESSARY.
n z 5'
d
0
1.5'
MIN
WET BASIN B
ANTI -SEEP COLLAR
NOT TO SCALE
(TYPICAL
AT ALL STORM OUTFALLS TO
POND)
ALL SLOPES
3:1 MAXIMUM
10'
10min.
21.5'min.
SEE PLAN
CL
POND
FOREBAY VOLUME
II
o
WSEL =0.65
OF REQUIRED
STORAGE, TYPICAL
►~-
p
1
0P
W
o
�
-
�o•
3'm in.
V
DITCH
BOTTOM = 5.0
OUTLET
PROTECTION
AS ON PLANS
WET BASIN B
FOREBA Y SEC TI ON
DE TA IL
Na T To scAL�
WELDED FABRICA TED TRASH
RACK W/SQUARE OPENINGS
SQUARE OPENINGS � 6A AL"
4-0"
{ SEE DETAIL o
o THIS SHEET
FOR
TRASH RACK
I
6„ 4'_ 0" 16„
2.0 FT WEIR
I' S - 0-�
GRATE PLAN VIEW N
BOX PLAN VIEW
WET BASIN B
OUTLET STRUCTURE DETAILS
NOT TO SCALE
VARIES 10' 14' 31'
16'
o f EMBANKMENT TOP_= 14 (SETTLED ` 14. 75 (CONSTRUCTED) _
II EMERGENCY SPILLWAY = 13.0
TOP OF GRA TE = 12.0
WEIR CUT = 11.7 1 STATE STORAGE = 18613 CF
0
W TOP OF 10:1 SHELF EL= 11,15
OP NORMAL WSEL= 10.65 MIDDLE OF 10:1 SHELF -
0 60 LF 18" gyp. BOTTOM OF 10.1 SHELF EL= 10 15
ANTI -SEEP
COLLAR,
SEE DETAIL
VARIES
A
CP -- .
>•\ ANTI -SEEP COLLAR, BOTTOM EL= 8.8
BOTTOM SWM STRUCTURE EL= 7,15
SEDIMENT CLEANOUT EL. = 5.00
1E= 10.65 807T0M EL= 4.0 _
30'
10'
WIDE
10.1 SHELF
45'
WET BASIN B
EMBANKMENT SECTION
NOT TO SCALE
RECEIVED
BY:
LICENSE C-2710
COASTAL
SITE
D E S I G N qPC
ENGINEERING
LAND PLANNING
COMMERCIAL / RESIOENTIAL
P. 0. Box 4041
Wilmington, NC 28406
[phone]
o .y
L SEAL
• a 025483 r '
DES DRw CHK
ARE PROTECTION
BRANCH MANAGER
CHIEF ENG/ARCH
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CONSTR. CONTR NO"
N40085-09-R-32•15
a
Calibre Engineering, Inc.
NAVFAC DRAWING NO
N
9090 South Ridgeline Blvd, Suite 105
SHEET OF
328
>_
Highlands Ranch, CO 80129 [phone]
www.calibre-engineering.com
SHEET NO
C-515
J
Construction Management Civil Engineering Surveying
0

2
3
D
C
w
i
100 LF 7187
CI
r
{ fJ �
� 1 130X CL Il RIPAAPE 1.5 FTDEE
\ J
EMERPENCY SPILLWAY
R_�1 IE = 15.
15 h" -RAF •1.5 FT DEE 80 CY CL II RIP
,E TES NONWOVEN FILTER FABRI i 1.5 FT I
1 PLACED UNDER RIP R 1
t WOVEN FILTER FA.
SEE DETAIL THIS 1 1ACED UNDER RIP
BASIN BOTTOM = 6
/z
?�6F/
= 13.2 FT
0P4 FOREBAY BOTTOM =
T
-7,
11 RIP IRA \/ N/ \/
TP '
�U
v �
-.. - - '(KAUIVJ = o r
LENGTH = 1 ! 7 LENGTH = 10.7 FT
1 1.0 FT DEEP
RAP
'X /!
4 CY CL ll RIP RAP
1.0 FT DEEP
{ \
2 CY CL II RIP RP
1 I
J
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1
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. t ........................'t .'. ,.......... ... .
�............... ...... \ I. ...
L.......................1......................... .......'.'.'.".'.'. r.................�........,.......
NOTES:
1. ALL BUILDING ROOF DRAINS MUST BE DIRECTED INTO THE STORM DRAINAGE COLLECTION
SYSTEM OR INTO THE STREET/PARKING LOT.
2. PORTABLE PUMP TO BE USED TO DRAIN POND IN CASE OF EMERGENCY. PUMP TO BE
„ PLACED TOP OF BERM WITH SCREEN ATTACHED TO HOSE INLET AND COVERED WITH STONE.
HOSE OUTLET
ET TO DRAIN ACROSS STABLE UPLAND AREA SUFFICIENT TO RESTRAIN EROSION.
3. BASIN SIDESLOPES TO BE PERMANENTLY VEGETATIVELY STABILIZED WITH CENTIPEDE SOD
1 inch - 80 R Homzonw
WET BASIN "D" DETAIL
NOTES:
1. TEMPORARY SKIMMER TO BE INSTALLED ON PRIMARY OUTLET STRUCTURE BOX -
AND TO REMAIN IN PLACE UNTIL SITE IS PERMANENTLY STABILIZED PER NCDENR/LQS
SEDIMENTATION AND EROSION CONTROL PERMIT. SEE SKIMMER DETAILS FOR INSTALLATION.
2. GRADE WILL BE 20:1 ONLY IN FRONT OF OUTLET BOX. REMAINING SHELF SHOULD BE CL B RIP RAP W/ GEOTEX
10:1. PP IS THE CENTER OF THE 10:1 SHELF. NONWOVEN FILTER FABRIC
3. RIP RAP TO BE PLACED AROUND THE PERIMETER OF OUTLET BOX. (TO SURROUND ENTIRE
OUTLET STRUCTURE)
TOP OF BOX AT 3
BACK OF BOX EL= 14.7
6" PVC SCREW PLUG EL= 13.7
6" ORIFICE ASSEMBLY
6" CROSS 1
SKIMMER CONNECTION 6 - -
TO BE CAPPED ONCE\ 18" RCP 6" CAP WITH 2.5" HOLE DRILLED
SKIMMER IS REMOVED \\` OUTLET PIPE
WSEL = 12.5 INV = 12.5 INV= 12.
12 2 FT SUMP
SB FOR CLEANOUT
4 FT x 4 FT PRECAST CONCRETE BOX
OR EQUIVALENT HAND BUILT
7TOR GROUT .. ;<: EL= 9.5
6"BASE SKIMMER = 3" SKIMMER WITH 2.6" ORIFICE DIAMETER
3 VAC \
1 �6" CAP WITH 2.5" HOLE DRILLEC
TO REMAIN CAPPED UNTIL SKIMMER
IS REMOVED
POND BOTTOM
ELEV= 6
SECTION VIEW
WET BASIN
OUTLET STRUCTURE DETAILS
NOT TO SCALE
WETLANDS VEGETATION NOTE:
THE FOLLOWING SPECIES OF WETLANDS VEGETATION ARE SUITABLE FOR
PLANTING ALONG THE 10:1 VEGETATED SHELF:
PLANTS SUITED FOR SHELF THAT'S UNDERWATER
- SAGITTARIA LANCIFOLIA (BULL TONGUE)
- SAGITTARIA LATIFOLIA (DUCK POTATO)
- SAURURUS CERNUUS (LIZARDTAIL)
PLANTS SUITED FOR SHELF THAT'S ABOVE WATER
- ASCLEPIAS INCARNATA (SWAMP MILKWEED)
- CAREX TENERA (QUILL SEDGE)
- CHELONE GLABRA (WHITE TURTLEHEAD)
SF OF 10:1 SHELF UNDER WATER = 3,540 SF / 20D = 17.7 X 50 = 885
PLANTS REQUIRED
885 / 3 = 295 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE
PLANTED
SF OF 10:1 SHELF ABOVE WATER = 3,540 SF / 200 = 17.7 X 50 = 885
PLANTS REQUIRED
885 / 3 = 295 PLANTS OF EACH OF THE THREE LISTED ABOVE MUST BE
PLANTED
IF ONE OR MORE OF THE SUGGESTED SPECIES IS UNAVAILABLE, APPROPRIATE
WETLANDS VEGETATION COMMON TO THE COASTAL NORTH CAROLINA REGION
MAY BE SUBSTITUTED. SEE CH 9 OF STATE STORMWATER BMP MANUAL
�OR LIST OF OTHER RECOMMENDED WETLANDS PLANTS.
I'CALCULATION SUMMARY FOR DWQ:
IMPERVIOUS AREA PERCENTAGE:
TOTAL AREA DRAINING TO POND = 333,366 SF (7.65 ACRES)
TOTAL IMPERVIOUS = 175,038 SF (4.02 ACRES)
PERCENT IMPERVIOUS = 52.5%
REQUIRED SURFACE AREA:
AT 4 FT OF DEPTH, 90% TSS REMOVAL, SA/DA = 4.55
0.0455 x 333,366 = 15,170 SF SURFACE AREA REQUIRED
SURFACE AREA PROVIDED = 15,208 SF
1.5 INCH VOLUME:
I = 52.5
Rv = 0.05 + 0.009 x I = 0.05 + (0.009)(52.5) = 0.52 IN/IN
MINIMUM VOLUME = DESIGN STORM x Rv x DRAINAGE AREA
= (1.5/12)(0.52)(7.65) = 21,776 CF
1.5 INCH STORAGE VOLUME AT ELEVATION 13.7 = 22,394 CF
2 TO 5 DAY DRAW DOWN:
AVERAGE HEAD FROM STORAGE ELEVATION
TO ORIFICE INVERT = (13.7 - 12.5) / 3
= 0.40 FT
1.5 INCH PVC ORIFICE: Q = CA(2gh)-1/2
= 0.6(0.03407)(64.4 X 0.40)"1/2
= 0.10376 CFS
T = 215,834 SECONDS = 2.50 DA" S
FOREBAY REQUIREMENTS:
MINIMUM FOREBAY VOLUME = 20% OF PERMANENT POOL VOLUME
= 0.20 x 56,222 CF
= 11,244 CF
TOTAL FOREBAY VOLUME PROVIDED =
FOREBAY = 11,361 CF
23 FT EMBANKMENT
�-200 FT ELEVATION =
ELEI V. = 15.5I
\ TOP OFRIPRAP
A\ a\
WET BASIN
EMERGENCY SPILL WA Y
FRONT VIEW
NOT TO SCALE
WELDED FABRICATED TRASH
RACK W/SQUARE OPENINGS
SQUARE OPENINGS < 6"
0
1
4-0"
SEE DETAIL
THIS SHEET I
FOR
TRASH RACK
6„
f BOX PLAN VIEW
5'- o"
GRATE PLAN VIEW
WET BASIN D
OUTLET STRUCTURE DETAILS
NOT TO SCALE
/ ALL SLOPES
3:1 MAXIMUM Z
a
5' O'min. 5' 12a
Z
O
POND FOREBAY VOLUME E z
OF REQUIRED o
WSEL = 12.5 STORAGE, TYPICAL _
to
ORIP RAP 1.5'min �P
3'min. BOTTOM = 7 OUTLET PIPE
qj
OUTLET
PROTECTION
oX) NON WOVEN FILTER FABRIC UNDER RIP RAP AS ON PLANS
TYPICAL AT AL
L LL STORM OUTFACES TO POND)
FOREBAY SECTION DETAIL
NOT TO SCALE
NOTE: COLLAR TO BE POURED AFTER 6„
PIPES ARE IN PLACE.
REINFORCING AS NECESSARY.
un z 5'.
1.5'
MIN
WET BASIN
ANTI -SEEP COLLAR
NOT TO SCALE
VARIES 10' 14' 31'
16'
EMBANKMENT TOP= 16.0 (SETTLED) = 16.25 (CONSTRUCTED)
EMERGENCY SPILLWAY = 15.5
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Construction Management Civil Engineering Surveying
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CCNSTR.
N40085-1 O-R-5324
NAVFAC DRAWING NO,
SHEET X OF
C-1 04

DEVIATIONS
FROM
DESIGN DRA WINGS:
DESIGN ASBUILT STATE Uk
ORM 15'
to
NORMAL POOL ELEVATION 15.2
14.64
SURFACE AREA 27,860
35,357 23,863
STORAGE VOLUME 4,1871
19208 41,116
DRAW DONN IINE 261
241
POND SUMMARY:
NCDENR/bW0 PERMIT # SWO-100201
1. lAMWOUS AREA POWITIED
333,858 SF (7.66 ACRES)
2 NORMAL POOL SURFACE AREA
35,357 sf
3. NORMAL POOL ELEVA AON
14.64
4. POND DEPIH (DEEPEST POINT)
56 FT
5 POND BOTIUM ELEVA110N (DEEPEST POINT)
9.0
6, aWXE INVERT ELEVATION
14.64
7. OUTLET BOX CREST ELEVA TM
16.22
B STATE STORAGE VOLUME
63,208 CF
g 10.1 FT VEGETATED SHELF
PRESENT
10. 10 FT ACCESS
PRESENT
It FOREBAY
PRESENT
12 PRIMARY SPILLWAY ELEVATION
16.22
a adwxvcYSMWAY ELEVATION
16.5
It ORAFICE 517E
4 INCHES
1& SGDESLm (TYPICAL)
11
16 INV. OF PIPES FROM OURET STRUCTURE
14.64
17. CREST LENGTH OF GRATES
4'
STATE WATER QUALITY POND CONSIDERATIONS -
SURFACE AREA REGURC = 24863 SF
SURFACE AREA PROVIDED - 35,357 SF
1.5' STORAGE KXUME REWIRED - 41,116 CF
1,5' STORAGE KXUME PROVIDED - 63,208 CF
1.5" STORAGE DRANDONN WE = 2-40 DAYS
EMBANKMENT TOP - 17.0
FA* 14-64
v
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14.64 INN 14.64
i
10
- SB 3
1. 4" PERFORA TED
•1r .soNC.• . • .
OR GROUT .
4 f' x 4 F7 PRECAST CONCRETE BOXES
PVC W/ GRAVEL
N� PRODUCTS 4848 OR EQUIVALENT
AND FABRIC FILTER TER
POND _BOTTOM
ELEV= 9.0
SECTION VIEW
WET BASIN A
OUTLET STRUCTURE DETAILS
NOT TO SCALE
F
_ ache
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cr��
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0 .Q 0
0
TOP OF EIBANKAIENT I
ELEVA77N = 1XO
AS -BUILT WET DETENTION BASIN
EMERGENCY SPILL WA Y
FRON T VIEW
NOT TO SCALE
q17�0
=14.30'
Outlet Structure
Top(High
Side) = 17.51 '
Top(Low
Side) = 16.22'
Inv. 4"
= 14,64'
Inv. 18"
= 14,54'
Bottom
= 13.62
U INV. 18" RCP =14. 17'
o°
C
oa0
30"
14.10'
NOTESr
1. AS -WILT LOCATIONS PERFORMED AND PROVIDED BY BELL AND PHILLIPS
SURIEYING, PLLC DRAWING LABELED "STOR"ATER INFILTRA77ON BASIN ASBUILT
SLKY OF BACHELORS ENLISTED QUARTERS COURTHOUSE BAY P-1251 P-1254"
SAW AND SEALED BY CYRUS ALAN BELL L-2699
DAM 3-18-14
2. ELVA 77ONS RELATIVE TO NA VD 1986
J. ADITIONAL SHOTS ON OUTLET STRUCTURE PERFORMED BY CYRUS ALAN BELL L-2699
00DATED 1-6-15
r I r • ,r .r
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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F:1
LOCA TION MAP
POND SUMMARY:
NCDENR/DWQ PERMIT # SW8-120101
AS -BUILT DATA: AS -BUILT DATA
1. IMPERVIOUS AREA PERMITTED
175,038 SF (4.02 ACRES)
2. NORMAL POOL SURFACE AREA
16,432 sf
3. NORMAL POOL ELEVATION
12.48
4. POND DEPTH (DEEPEST POINT)
6.0 FT
5. POND BOTTOM ELEVAPON (DEEPEST POINT)
6.0
6. ORIFICE INVERT ELEVATION
12.48
7. OUTLET BOX CREST ELEVATION
13.75
8. STATE STORAGE VOLUME
24,338 CF
9. 10: 1 FT VEGETATED SHELF
PRESENT
10. 10 FT ACCESS
PRESENT
11. FOREBAY
PRESENT
12. PRIMARY SPILLWAY ELEVAT7ON
13.75
13, EMERGENCY SPILLWAY ELEVA7ION
14.7
14. ORIFICE SIZE
JO INCHES
15. SIDESLOPES (TYPICAL)
3:1
16, INV, OF PIPES FROM OUTLET STRUCTURE
12.48
17 CREST LENGTH OF GRATES
4'
STATE WATER QUALITY POND CONSIDERATIONS -
SURFACE AREA REQUIRED = 15,208 SF
SURFACE AREA PROVIDED = 16,432 SF 0 ELEV 12.48
1.5" STORAGE VOLUME REQUIRED = 22,394 CF
1.5" STORAGE VOLUME PROVIDED = 24,338 CF
1.5" STORAGE DRAWDOWN TIME = 2.71 DAYS
24" RCP
IE= 12.48
PERMANENT POOL EL: 12.48
SURFACE AREA @ 12.48 = 16.432 SF
TEMPORARY POOL EL = 13.75
SURFACE AREA @ ELEV 13.75 = 20,847 SF
STORAGE @ ELEV. 13.75 = 24,338 CF
OE VI A TI ONS FROM
DESIGN DRA WINGS. -
DESIGN
ASBUILT STATE MIN.
NORMAL POOL FLEVA77ON
12.5
12.48
EMERGENCY SPILLWAY
13.7
13.75
SURFACE AREA PP
15,208
16,432 -
STORAGE
22,394
24,338 -
DRAWDOWN TIME (DAYS)
2.50
2.71
EMBANKMENT TOP - 15.0
EMERGENCY SPILL WAY EL = 14.7
TOP OF OUTLET BOX = 13.75 STATE STORAGE = 24,338 CF--__ _
OUTLET STRUCTURE
TOP: 14.7 (HIGH SIDE)
TOP: 13.75 (LOW SIDE)
ORIFICE EL: 12.48
SEE DETAIL (THIS SHEET)
AS --BUILT EMBANKMENT SECTION
NOT TO SCALE
EL= 14.7
P �
6" PVC SCREW PLUG OE
D
FAc OA
6" ORIFICE ASSEMBLY EL= 13.75 gQ
6" CROSS ;
SKIMMER CONNECTION `.
TO 8£ CAPPED ONCE \ 1, 2 FT SUMP LL RCP
SKIMMER 15 REMOVED FOP CLEANOUT OUTLET PfPE
IN V=
U WSEL = 12.48 12.48 INV= 12,48
r
12"
12" CONC.°�...
12" OR GROUT
FT x 4 FT PRECAST CONCRETE BOXES
/ 6"BASE NO PRODUCTS 4848 OR EQUIVALENT
3-✓'- ' '.
SECTION VIEW
ASBUILT WET BASIN J
OUTLET STRUCTURE DERAILS
NOT TO SCALE
2
S TORMWA TER RECORD DRA WINGS for
ONSLOW COUNTY, NORTH CAROLINA
EEVF ' 5
AS -BUILT WET DE TEN TION BASIN
EMERGENCY SP I L L WA Y
FRONT VIEW
NOT TO SCALE
K
NO TES:
1. AS -BUILT LOCATIONS PERFORMED AND PROVIDED BY BELL AND PHILLIPS
SURVEYING, PLLC. DRA114WNG LABELED 'STORMWATER INFILTRATION BASIN ASSUILT
SURVEY OF BACHELORS ENLISTED QUARTERS FRENCH CREEK P-131 Y
SIGNED AND SEALED BY CYRUS ALAN BELL L-2699
DATED 4-17-14 AND REWSED ON 6-10-14.
2. ELEVATIONS RELATIVE TO NA VD 1988
E
r w , , - A A A,
0 30 ;o 120
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EPRDJECT NO.:
CONSTR.
CONTR. NO
N40085-1
1 -C-4021
NAVFAC DRAWING NO,
12616807
SHEET
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