SW8970713_APPROVED PLANS_19980109 (2)

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW8 g10113
DOC TYPE
❑ CURRENT PERMIT
II APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
\, qM 0109
YYYYMMDD

GENERAL 1407ES:
1. Information concerning underground utilities was obtained from CONC.
POWER
available records. It shall be the responsibility of the POLE &SF�Contractor to determine the exact elevations and locations (0tyoa JURISDICTION TAX PARCEL
#65-00-04-17
or all existing utilities at all crossings prior to
commencing trench excavation. If actual clearances are less
F
than indicated on Plan, the Contractor shall contact the''
2 \ '�2 '
EROSION & SEDIMENT CONTROL and WATER QUALITY PLAN
ANTIOLIA
L OCA TION MAP
NOT TO SCALE
Design Engineer before proceeding with construction. Gj' / \\\ `S:ae� (A MULTI -FAMILY DEVELOPMEIJT)
2, NO CONSTRUCTION IS TO BEGIN BEFORE LOCATION OF EXISTING TOP 13.65�'/ �� 79\% WILMINGTON TOWNSHIP NEW HANOVER COUN Y NORTH CAROLINA
UTIL17/ES HAS BEEN DETERMINED. INV. s.so time `
INV. 4.10i , ♦ � \~\
3. Contractor is responsible for obtaining all required permits. / 2
, 1 ' ey / 24 / \ F G�FR ♦ CI
1 �
TY OF WILMINGTON
4. This plan is for site erosion control, water quality and drainage. See C j nor 2� T tZ \� rqv OWNER: P.O. BO S. SANDERS
4 POWER /� TAX PARCEL P.O. BOX 3167
construction and building plans for details on utilities hookups, et: TOP 13.03 POLE zz C� ' --�
ALL ROOF DRAINS MUST BE DIRECTED SO THAT THE RUNOFF IS INV. 1.43 Syy�J, tiRl ` 2
✓. INV. 1.43 s 9 x N v OT v
SEN T TO THE POND. B� `\� ' a
CALCULATIONS FOR IMPERVIOUS AREAS
AREA IN DRIVEWAYS/SIDEWALK
174,100 S.F.
AREAIN ROADS
22,750 S.F.
AREA IN BUILDINGS
90.860 S.F. -
SIDEWALKS TO BUILDINGS
3,733 S.F.
TOTAL IMPERVIOUS AREA
291.443 S.F.
291,443/43,560 =
TOTAL ACREAGE IN PROJECT
6.69 AC.
15.186 AC.
Y OF IMPERVIOUS SURFACE =
44%
7 OF IMPERVIOUS SURFACE =
ON PREVIOUS ANTIQUA
PRELIMINARY -
577
V�
0.
X x\� X
e x
o/
, x x x
X X X �..�
�' x X X X
n0 'v S X. -
-- ?'
����P�Jy^P�� ?. -So , � �4od uPE DI 19 2 B�
PUBLIC ROAD J o` °Pr w A-W CWNSERVAkCIA 7s.1 _
Y 78.6
---------------�- ',�-� / '�X x AREA' - X�� � EL=20,9
ftd l x, x x x x Au / x� C
a\ x -% x_ x -I 9 171. x x x A e.-
CONNECT PROPOSED 12" � _
<2 WATERLINE TO EXISTING�� X X X X X X ' 'B ' . P / EL=19.9 X x -
12" WATERLINE 1 ®
92�'yL� `o. / _X X -X X- x X.
X X x� a 79 EL=19.1 18.1 -
OirG Z. x x X11-
y�n� �1
x x x x x
n,A X0.4(48,<Acx X �J
6" MINIMUMt� Pi lK AREA ��'
THICKNESS pJZ ZONED HM \I/ x :K x
N/F FLGSSIE BkYAN Foa XRISI icTlrJN
2" -�" COARSE is X X X� K� k
- E •F, L � ' �� TOO YEAR
0 6LOOd LINE ` � .
NOTE: SEE NARRATIVE 12'MINIMUM X x
FOR MORE DETAIL
X
ry
x x X
TEMPORARY GRAVEL CONSTRUCTION � � X Xi � ~' �89 �RFq oAF � s
ti O
N 86'49'32" E z' x I*F.o u� RF r qp S 17 .......
ENTRANCE/EXIT DETAIL 18.00 FT ' X x
N.TS. f X X I q7 3�
°L
Q x 1� _ 3�
� 1
C E 2 X �
p°
ox X X x $F �•x lox
LEGEND q x x x x " x X X x x x x
_V\ 174 x JU il�� X S� \
+-----------i EXIST. SANITARY SEWER Z x- x x x ONSER TIT NOV
'x
X X X x x -x X- x X X X x �x x- x �l` �'� o ff /� x IIX ` Q`
s- -@ -- -� PROPOSED SANITARY SEWER q y-.-_ �°'p .. to
AOo�(r. (�• jC =- X=X-Y _. LC _ X -X -X X X X X X X X X X .+` X k X X X X
--._
7^ g0S1. 9'W 4 EXIST. WATER SUPPLY = x x "x- -x-+x_. x. - x x- x x '� /x x x x x x x X
w 25' SE IBRK N 83'36'S4rµ,'�1.86 F R `(_= " X x X X_. X X X -
,_ x�� PROPOSED WATERLINE & FIRE HYDRANT ASSEMBLY �
j< x x X X�/
cT STOP SIGNS TO BE PLACED AS NEEDED I ZONED R-15 SF
La=22' c1
4' SIDEWALK -.�- SURFACE AREA OF POND PROVIDED x� X .y
TYPICAL PARKING SPACE &SIDEWALK RjT1 5' O ELEV. f0 = 75.073 SF. �- ..
SURFACE AREA REQUIRED 10,620 SF 100 YEAR bt �X
FLOOD LINE 'sr
DIRECTION OF STORM WATER RUN-OFF ELEV. f0.0'� X -\v-
1' La = 20'
■ CATCH BASIN APRON THICKNESS = 2.0'
I!m CURB INLET 2 CLASV-4 A coNCRErE �..
W FIL 7ER FABRIC ' "T s
fR
® STORM DRAIN MANHOLE 42 OR 48l.. SEE SIDE DETAIL
2ASPrM11 ,i
HANDICAP SPACE 2 I-1/,r\ Y x
OVERHEAD ELECTRIC LINES INLET PROTECTION DETAIL '" 25'
4 j' ..: SETBACK
1 " 4X 1 POSSIBLE TREE PRESERVATION AREA o /
LXJ o NT3 r
C ro CABC BASE 47MIN. 'r
ALL SLOPES � NOTE: COLLAR T9 BE POURED AFTER MAY BE REJECT OR SPILL TYPE CUTTER
3: 1 MAXIMUM o PIPES ARE IN PL .E.
REINFORCING: CURB AND GUTTER SECTIONS j\
N # 4 BARS ®12 iW 4'-0"TYP.
6'min. 12'min. SEE PLAN o
11 in �- 13..5' v R i 3 STREET TREE
50' ROW OW a
Foreboy volume I I 10 Of 4' 6' t t 4 10 lool
POND 2D� 1 d = -_ Io 110N-MUNICIPAL NON-MVNICII II
G' =3 t� C�
[ 0 60 30 0 60
C J r� O--i
PLAN VIEW SCALE IN FEET
60
SEX. SSMH �.. 10'- --�
T�
•�?,' / , -flI I .--4-0"TYP.TWIN 24 "RCP S R ORMWA ATER
Oe -- --- D E C E I V E
„ f0
10'-3" ---- NOV 121997 D
'x / O v LANDSCAPE PROJ # -D 13
SEE .SHEET 2 of 2
x\ ( FOR TRASH R,iCK AREA
O<j ell) // �' �/[v 1.25'WF,'R '';7UI- 4' SIDEWALK
13,
QP�o / ' ®EX. SSIM it -1"
N
8.5
TOP 14.23 1 ENTRhrvCE TO PLAN VIEW -
/ INV. 7.98 ECHO GREENS-
/ x / z7yny TOWNHOUSES CENTERLINE
OUTLET STR(Ke JUKE DETAILS
Y NO(10 SCALE TYPICAL DRIVEWAY AND PARKING
/ P IVTS
Alt,APPROVED
POST TO BE 6 FT. APART MAX
FOR NON-RE1NF0ACED FABRIC. NORTH CAROLINAMANAGEMENT
ENVIRONMENTAL
' �• / ' �} ' . FOR METAL MESH RISE 8' SPACING. DIVISION OF WATER QUALITY
7
Stormweter Permit No
\ EX. SSMH COMPACTED FILL OR
TOP 10.20 GRAVEL, EXTENSION
q / INV. 6.67 OF FABRIC AND WIRE
INTO THE TRENCH
\
\ , / SEE NARRATIVE
N FOR MORE DETAIL.
a o require p ,
--WSEL storage, typical e °� EASEMENr +/a: cAMiNr 3
9 YP w a Lm I t a': Ee I
___________________� ___ U> - - 4"GONG
ISOMETRIC VIEW
COONC
CLAY D
0 n ri, SIDEWAL
pP I . P SIDEWALK
OUTLET PIPE TYPE A - 2'ASPHALT SDEWA
/OA
4'min. CURBI-_ � 4"MARL BASE
L1.5'MIN NOIE: Both sides are symmetrical.
1. No drive access for single farnly development.
as necessary OUiLEI 2. No direct access to multi family development.
mum I' Stone PROTECTION 3 Centerline striped.
5. AS ON PLANS 4. For catch basin lay -out see "Local A & 8 Cul-de-sac" details.
FOREBAY SECT70N DETAIL ANTI -SEEP COLLAR TYPICAL STREET SECTION
TYPICAL AT ALL STORM OUTFALLS TO POND NIB
NOT TO SCALE
NOT TO SCALE
r
-� �` f65-00-04-15 WILMINGTON, N.C. 28406
\ \ \\ ZONED R-15 OATS: JULY 24, 1996
C/L 4OR apE
Xs�e fT /' }Po°) 4'TURNDOWN SIDEWALK 8" I Id'
4 4' 1 -6 1 6 4' SIDEWALK
TAX PARCEL 3: t y" 2" 1-2 " FT
-�\`x .°'Sew• f i /165-00-04-13 ---- 4
O 4• ABC p
8'SANriARY B"WAIER J I
SEWER TYP ( ) 3 I PAVEMENT
y I � ) MAIN TYV
a P6• WIDTH IS 26'
FACE TO FACE.
\
m `x� X�� 25`' fY"PICAL Pp.RKiNt;_SECTION 5D' IOW
- - t SETBACK
. \ NT8
X\ X 27
< ar 1 X X \ - EL=22:9 PRE SWAT\
CUL-DE-SAC �C
1 X X x X`11Vc A -
ZONED R-5 NT8
EL =19.9 X X x?, ' X `'<�►�
` ? 7 - / r \ a A N/F LAZOR
`X x x x x 1► ° X22X �\ £ \� D.B. 14E7 PG. 1566
x x x X X ?O Cb /X x x �`�x mp ' F OREBAY VOLUME:
Volume Required = 30,699 X 20% = 6,140 cf
x x xoz 70- 5 x x ' / P� Volume provided = 7,623 cf
x x x ,9 - � EL=22.9. x�,. x ; x - �� --_ � =�, POWER LE STATE WATER QUALITY POND CONSIDERATIONS -
li ., x x % - � /C x"<P0§E .-,% OVERHA D CCni,C _ _ r _ --� `�� Surface Area required = 1 0, 620 sf
/ _
/ i• p-.3-"��'.-. Surface Area provided = 15,073 sf
L 7, Storage Volume required = 26,580 cf
EL-19.9 Storage Volume provided = 30,699 cf
Stor age Volume Drowdown Time = 3.9 days
®� e' N`k�J/�� -< ®Ex ssM 1"- -- '\�� `` PEAK UISCHARGE SUMMARY
' }pF ,d c./' / / ' TOP 20 44 ,, \� 0< 10) pre-deve loped = 15. 1 cFs-
EL-18.9 �� /R �� y INV. 13.69 �. V 0(50) pre-deve(oped = 28.1 cfs
\20 / !d , / T�17O 0(100) pre -developed = 35.3 cfs
y ,�,/. - ,0<10) post-devetcped 3.7 cfs @ WSEL = 13.8
+/,,� �j / Q<50) post -developed = 32.8 cfs R WSEL = 14.7
Q(I00)post-developed = 49.6 cfs @ WSEL = 14.9
i i
�� y' � PUI4i) SLUIMEWTATIUW CONSIDERATIONS -
o FOUk STANDARD Storage Volume required = 10.73 X 1800 = 19,314 cf
• /, / �// �� 2'X3' GRATES
° f'✓ //' P'/ ' ®'EX. SSMH NCDOT OR EQUAL Storage Volume provided = 30,699 cf
TOP 19.07 LIMITS OF DISTURBANCE = 10.73 acres
INV. 12.45 - - ----
/ x; � / ory
rrrrr�
t1t�
1
REVISED TO SHOW SIDEWALKS STREET SECTION DETAILS AND
8-7-°7
DIMENSIONS OF STREETS AND SIDEWALKS.
-
- -
REV. N0.
DoIE(
REVISIONS -
EROSION & SEDIMENT CONTROL and WATER QUALITY PLAN
ANTIQ UA
WILMINGTON TOWNSHIP
NEW HANOVER COUNTY NORTH CAROLINA
`�Tawr°npr
S CARo'''%,,
.
C� SEALM�l'9
2000
7
00
OWNER: NATHAN S. SANDERS
P.O. BOX 3167
PHONE [phone]
FAX [phone]
HANOVEH DESIGN SERVICES, P.A.
LAND SU WYWS, EN6YNEt7?S & LAND PLANNERS
319 WALNUT N.C. 2
" WILMINGTON,ONE:(91 ) 3 28402
PHONE: [phone]
Date:
3-12-97
scale:
AS SHOWN
Drown:
Jam
Checked:
DSH
Protect No:
'O'ec'4893EC JM97
Sheet No:
1
Of: 2

GENERAL NOTES: /
t. in ormotion concerning underground utilities was obtained from CONC.
available records. It shall be the responsibility of the '/ POLER
COntroctor to determine the exact elevations and locations V y4 1 / �,,�` 404 JURISDICTON TAX PARCEL
of olI existing utilities at all crossings prior to �r\� �,PP{% \' I y65-00-04-17
f h ' if
t l l n l yP' ass
It;
EROSION & SEDIMENT CONTROL and WATER QUALITY PLAN
C
commencin
rent excavio o n. ac uo eara ces are ess yam./ �3,
than indicated on Plan, the Contractor shall contact the
Design Engineer before proceeding with construction. Gj" z 1B �S�oeAr 1p MULTI -FAMILY DEVELOF'MLN I )
2. NO CONSTRUCTION IS TO BEGIN BEFORE LOCA77ON OF EXIS7/NG � '
TOP13.65 ,;,��', �;; 9. �'�`. - 9- WILMINGTON TOWNSHIP NEW HANOVER COUIJTY PJOR-iH CAROLIIJA
UTILITIES HAS BEEN DETERMINED. INV. 5.so / ti ,
INV. 4.10, , or,
3. Contractor is responsible for obtaining all required permits. ySwP 0.5
e
\
OWNER: NATHAN S. SANDERS
4. This plan is for site erosion control, water quality and drainage. See G+ ' O�wER '' // >' 7 1 \\"fq ° TAX PARCEL P.O. BOX 3167
/ / /construction and building plans for details on utilities hookups, etc. TOP 13.03 �POLE�� ' 22 9 �� o \ #65-00-04-15 WILMINGTON, N.C. 28406
INV\ DATE: JULY 24, 1996
. 3.13 1 1y '
ZONED R-15
5. ALL ROOF DRAINS MUST BE DIRECTED SO THAT THE RUNOFF IS INV. 1.43 C
s I t ' A 2 \t
SENT TO THE POND. ' ^ B� 4 \ \ L
�/G � ... .. _ // 1 far✓ t \ \ \ f � � 6\J '. , b
4' SIDEWALK
66'--
LOCH 71ON MAP
NOT TO SCALE
4' SIDEWALK
- 2- 1-2
TAX PARCEL
#65-00-04-13 0 a" ABC 0
\N 0 F p
1b
Aj' ? ` `\ S s i 8"SANITARY 8"WATER
4r .\ O %Z i SEWER (TYP) MAIN (TYP)
22.2
tiQP ,yams 18 =�s \,s 2 ? TYPICAL PARKING SEC 2TION
0
SETBA INTO SETBACK-,
s94 �404 JURISDICTION+ 19 2 e 1 I 1 O T F=22. 9 PRE VATSIBILE pI\ J�
--- PUBLIC ROAD--_---� `�\yP ��` '�D�rk� L CONSERVATION 191 A _ EA \ mC ��
Fes? , ��,4 ► AREA FF=20. 186 FF=19.9 \ ZONED R-s
2z9\ N/F LAZOR
D.B. 1467 PG. 156:
o�CONNECT PROPOSED 12' ='^� 11 -- - CB 3 5 n1
FZ WATERLINE TO EXISTING 2 ' ' '
l,1y9 G1� co"ATERLINE L ,.P F=19.9 N.. i 0/
2L 9� . I ' s 3 to 1 1 FF=22.9'. \ POWER
/9 �
/. POWE _.� ' l hr. SAC. ELECTRIC ' f �\
FF=19.1
P
19 FF=19.9
6" MINIMUM PARK AREA
THICKNESS PGZ ZONED :d
N/F FLOSSIE 9t N, N 404 JURISDICTION
2"-3" COARSE
AGGREGATE 100 YEAR 1
A°j^^' FLOOD LINE 2
2 ELEV. 10.0 19
NOTE: SEE NARRATIVE 12'MINIMUM SF=18.
FOR MORE DETAIL.
w 'Oq
�o kgReq�.
TEMPORARY GRAVEL CONSTRUCTION o ZD. o
N 86'49 32" E L>
THICK
ENTRANCE/EXIT DETAIL 18.00 FT��=�2 R/PRAP �S CHn
N.T.S. 0 4 @OP i
to
o N
SF
LEGEND
v 404 JURISDIC�TON JF
--------1 EXIST. SANITARY SEWER z CONSERVATION AREA
® PROPOSED SANITARY SEWER
o°� -- --.
EXIST. 8"W -i EXIST. WATER SUPPLY 4'.
EXIST. ��--�'
SETBACK N'8336'Sa°"�-IS BUFFER
25
W
6"W , PROPOSED WATERLINE &FIRE HYDRANT ASSEMBLY ,.
s1 STOP SIGNS TO BE PLACED AS NEEDED ZONED R-15
4' SIDEWALK La=22 L]�
TYPICAL PARKING SPACE & SIDEWALK 10.5
DIRECTION OF STORM WATER RUN-OFF
26' La = 20'
■ CATCH BASIN APRON THICKNESS = 2.0'
r� CURB INLET
® STORM DRAIN MANHOLE 42„OR 48' W,/ FIL 7ER FABRIC
_V
HANDICAP SPACE SEE SIDE DETAIL
OVERHEAD ELECTRIC LINES C INLET PROTECTION DETAIL
O
a NITS
ALL SLOPES o 0
3:1 MAXIMUM c NOTE: COLLAR TO BE POURED AFTER
3 PIPES ARE III PLACE.
REINFORCING:
n # 4 BARS R 12" EW 4'-0"TYP.
10'min. 6'min. 10'min. rn
0
POND
WSEL
35.00 O
® O v 3> u
-________ V-----------------------
2'min. OP w stli
�� 2'min. O o OUTLET PIPE � A P o. . ,
O
e� OUTLET MIN• NO
y�nQ PROTECTION
�1 FOREBAY SECTION DETAIL AS ON PLANS
TYPICAL AT ALL STORM OUTFALLS TO POND ANTI -SEEP COLLAR
NOT TO SCALE NOT TO 8CAL.E
EX. SSMH 1A,
\
TOP 20.44\
7FF=18.9 e \ L (cam '' �/ INV. 13.6900
P
FOUR STANDARD
GRATES
EX. SSMH NC OTOR EQUAL
TOP 19.07
INV. 12.45
60 30 0 60
C�iATE ��
PLAN VIEW SCALE 1N FEET
``
60
TOP 17.38 V)V
i _la.a 40/ , ® INV. 10.48
=11.0 i a, i / / i -� f -4.-0"TYP.
N1 WIN 24 w
w`\�-RCP
n
s Ali
jR�k
LANDSCAPE
SEE DETAIL 7H6 SHEET
FOR TRASH f'A;K AREA
`• R / G 4' SIDEWALK
C100 YEAR 5
♦ �� J 13'
FLOOD LINE \ `�. 76'2 i /Qr"•ryP� / / 0EX. SSM •-- 1T'1" N 8.
ELfV 10.0' �� ; , TOP 14.23 ENTRANCE TO
ro -
FLAN VIEW n
*� . \�?/O / / INV. 7.98 ECHO GREENS
TOWNHOUSES CENTERLINE
A OUTLET STRUCTURE DETAILS
X ,1 ; /1 / , ,� NO) TO SCALE
TYPICAL DRIVEWAY AND PARKING
NTS
P
25'
SETBACK �� •,�y�1��, }gam ..._ ._- t � :, � � � �
/ r
/ r
0' EX. SSMH COMPACTED FILL OR ,
TOP 10.20 GRAVEL, EXTENSION
\ INV. 6.67 OF FABRIC AND WIRE
nUT'I L -. 11T1U1Y
SEMENT 1 4 1/4": EASEMENT I I
ONC. 2"SAND
EWALK 72AASSPH_ALT7
CLAT4 caNc
TYPE "A' SIDEWALK
CURB 4"MARL BASE
TE: Both sides are symmetrical.
1. No drive access for single family development.
2. No direct access to multi family development.
3. Centerline striped.
4. For catch basin lay -out see "Local A & B Cul-de-sac" details.
TYPICAL STREET SECTION
HIM
Y / j
1 2 /
INTO THE TRENCH
SEE NARRATIVE
FOR MORE DETAIL.
ISOMETRIC VIEW
EROSION & SEDIMENT CONTROL and WATER QUALITY PLAN
ANTIQ UA
WILMINGTON TOWNSHIP
NEW HANOVER COUNTY NORTH CAROLINA
SEAL.
20007
lyGMgg!
s. W'
OWNER: NA THAN S. SANDERS
P.O. BOX 3167
PHONE [phone]
FAX [phone]
HANOVER DESIGN SERVICES, P.A.
LAND SURK "S, ENG IaRS & LAND PLANNERS
319 WALNUI SIREET
WILMINGTON, N.C. 28401
PHONE: [phone]
Date:
3-12-97
Scde:
AS SHOWN
Drown:
JBM
Checked:
DSH
Project No:
4893ESC JM97
sheet No:
1
L
of:

CONSTRUCTION SCHEDULE -
Indicated on Plan
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 roadway, primary ditches, and
Sediment Basin for preliminary grading.
3. Install Gravel Construction Entrances.
4. Install Sediment Basin as shown on Plan prior to clearing and
grubbing site.
5. Construct ditches and any other sediment control Practices
shown, prior to rough grading roadways and site, stockpiling
material and topsoil as necessary.
6. Install utilities in roadway, establish final road grades and
stabilize road and parking areas with stone base course.
7. Final grade building sites, install non -municipal utilities as
needed, and vegetatively stabilize areas where building
construction is not imminent.
8. All erosion and sediment control Practices are to be inspected
weekly and after any rainfall, and repaired as necessary.
9. Upon completion of building construction, the roadway and
parking areas are to be paved and all areas permanently
vegetatively stabilized. After site stabilization, temporary
measures are to be removed and the Sediment Basin cleaned to
its original design contours, if necessary, and riser
structures orifaces opened, so as to function as a stormwater
management / water quality retention pond.
NOTES:
1. This property is located within a special flood
hazard area according to Flood Insurance Rate Map Community
Panel #370171-0010 B, effective date APRIL 2, 1986.
2. Site area = 15.186 acres.
Overall area draining to pond = 11.00 acres.
3. Building layout and dimensions by others.
4. Minimum distance between buildings is 20'.
5. Rip -rap or other suitable protection to be placed at all pipe
inlets and outlets, and where necessary to prevent scour.
6. All sanitary sewer and water mains to be 8"PVC unless noted.
7. Two gate valves at all Tees, blow -offs at at dead ends.
8. All impervious areas to be directed to ponds.
9. All roof downspouts to be directed to paved roadways.
MAINTENANCE PLAN -
Indicated on Plan
1. All measures to be inspected weekly and after any rainfall
event and needed repairs made immediately.
2. Sediment Basin to be cleaned out when the level of sediment
reaches 2' below oriface opening. Riser structure to be cleaned
if excess water above design surface no longer drains
properly.
3. Sediment to be removed from ditches when they are
approximately 50% filled or sediment level is within 2' of top
of ditch bank.
4. Sediment to be removed from behind the 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
barrier.
5. All seeded areas shall be fertilized, mulched, and re -seeded
as necessary, according to specifications provided, to
maintain a suitable vegetative cover -
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.
POND PEAK; DISCHARGE SUMMARY COCA TION MAP
Q(10) post -developed = 13.7 cfs @ WSEL = 13.8 EROSION ZSc SEDIMENT CONTROL and WATER QUALITY PLAN NOT TO SCALE
0(50) post -developed = 32.8 cfs @ WSEL = 14.7
0(100)post-developed = 48.6 cfs @ WSEL = 14.9
AN OUA
v
GRATE TOP
5.0'
WELDED BAR
TRASH RACK
BOLTED IN PLACE EL=14.25
90°ELBOW DOWN
8 "BELOW WSEL
13 4
4'
11.5 MIN. 1.25' WEIR
STATE STORAGE WSEL=
10.0
30,699 cf
)0.0
SB
2" PERFORATED
PVC W/ GRAVEL
POND BOI TOM AND FABRIC FILTER EL= 5.25
ELEV= 2.5
POND MAY BE 0VEREACAVATED
TO PROVIDE SEDIMENT STORAGE
GRATE TOP
EL= 11.5
INV=
10.0
I' CONC. b INV=10.0
or GROUT
2.5'SUMP
3
2 - 24 "RCP
00.31 %
OUTLET
PIPES Lam'
=BASE
4'x 10Precost Conc.Box, lTiindall UV0410 OR EQUIVALENT
SECTION VIEW
OUTLET STRUCTURE DETAILS
NOT TO SCALE
FILTER
6'-0" 0'-2" FABRIC
TYPE A 0'-2"" BACKr.LL
FLASHING LIGHT 6" 5 0-4 /
MINIMUM 8" /
0 -8" THICK LAYER
OF GRAVEL
1'-0"
7 - WIRE
5-0" ORANGE REFLECTIORIZED(TYP) 2
WHITE REFLECTORIZED(TYP) 2
V-TRENCH
m
1'-0"
0'-4" I
GROUND SURFACE
GROUND SURFACE
TYPE BARRICADE
NTS
>3D15-M
H
0
Ld
OP o
F_
K 6"
SLOPE co
of
EMBANKMENT
FES
NOTE: FILTER FABRIC IS TO
BE PLACED UNDER ALL STONE
OUTLET PROTECTION.
USE NICOLON MIRAFI 60OX
POLYPROPYLENE, OR EQUIVALENT
n
14"MINIMUM
SECTION
EXTENSION OF
FABRIC AND HARE
INTO THE TRENCH
a
(A MULTI -FAMILY DEVELOPMENT)
WILMINGTON TOWNSHIP NEW HANOVER COUN ►Y NORTH CAROLINA
OWNER: NATHAN S. SANDERS
P.O. BOX 3167
WILMINGTON, N.C. 2840b
DATE: JULY 24, 1996
2'X 4' FRAME AROUND
CREST OF OVERFLOW
STAKED 2'X 4' 1.5 MAXIMUM HEIGHT
WOODEN FRAME
3' LENGTH SEE NARRATIVE rOR
MINIMUM MORE DETAIL AND
3' SPACING ALTERNATE METHODS.
GATHER EXCESS --
FILTER FABRIC I I I `{
AT CORNERS I I I I
I I I I
LO
EXTENSION OF
FABRIC 1' MIN. Z
INTO TRENCH
4'CRUSHED STONE OR
12'COMPACTED SOIL
I I t I I I I I I I I
I I
�\� I I �� I � I 1 O
1 � I
FILTER FABRIC:
PERVIOUS SHEET OF I r_1-i
NYLON, POLYESTER. OR I j I DROP INLET
ETHYLENE YARN. EXTRA I I I WITH GRATE I I I
STRENGTH ( 50 PSI MIN.) l I I l I I
WITH ULTRAVIOLET RAY
INHIBITORS AND STABILIZERS ISOMETRIC VIEW "--'
FABRIC DROP INLET PROTECTION
NM
PPACTIM GA
IP
SEDIMENT FENCE ( SILT FENCE
NTS
PRACTICE 6.62
SF
FI
FI
C
FI
4"MINIMUM
SECTION
d50 = 9" STONE
dMAX = 1'
4'AlI12' La = TO -
APRON THICKNESS = i'
24" 9 CY ROCK
W/ FILTER FABRIC;
TWIN-24" CMP SEE SIDE DETAIL
POND OUTLET PROTECTION DE FAIL
NTS
18' 10' 15'
10' 22.5'
OP
to
MAXIMUM w
3
3
EMBANKMENT TOP= 15.7 (SETTLED), = 16.1 (CONSTRUCTED)
1 a
1
100-YEAR WSEL= 14.9 tMERGENCY SPILLWAY EL = 14.75
TOP= 14.25
STATE STORAGE VOLUME=
fl
��
10-YEAR WSEL= 13.8
/ 30,699 CF
OP
ANTI -SEEP
COLLAR,
OUTLET PROTECTION DETAIL SEE DETAIL
NT8
SIDEVIEW
NOTE: SEE CONS FRUCTION DRAWINGS
FOR DETAILED GRADING.
STATE STORAGE ELEVATION = 11.5, WEIR CUT = 11.5
\ 10:1 VEGETATED SHELF, MINIMUM 10' WIDE
TWIN 58 LF 24"RCP 0 NORMAL WSEL= 10.0 INVERT OUT= 10.0 Q G
ANTI -SEEP COLLAR, EL= 6.5
IE-10.0
15'
47.5'
EMBANKMEN��Tpp SECTION
1��`1�
BOTTOM SWM STRUCTURE EL= 5.25
1
REVISED TO SHOW STATE STORAGE.
8-7--97
REV. NO.
DATE
REVISIONS
PLANNED EROSION AND SEDIMENT CONTROL PRACTICES -
CE 1. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE
Practice 6.06
Shall be installed at any entrance to the proposed
project from an existing roadway. Drainage should be
away from the road and sedimentation will be controlled
with downstream practices. During wet weather it may be
necessary to wash truck tires at this location.
2. LAND GRHUING
Practice 6.02
Grading should be limited to areas as shown on the Plans.
Cut arid fill slopes shall be 3:1 or flatter except where
specifically indicated. Care shall be taken during land
grading activities not to durnage existing trees that are
identiried 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 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.
IP 4. INLET PROTECTION ( TYPICAL AT ALL INLETS )
Practice 6.52
Storm sewer inlet barriers of silt fencing and gravel inlet
protection are to be constructed to help prevent sediment from
entering the existing storm sewer system.
�P 5. OUTLET STABILIZATION
Practice 6.41
Ript up 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 glude and after utilities have been
installed, roadway and parkiny areas are to be stabilized by
placing sub --base course of approved stone, as shown in
the typical street cross-section detail on the Plan, to reduce
erosion and dust during the remainder of building
construction.
SB 7. SEDIMENT BASIN
Practice 6.61
the Sediment Basin is to be constructed first (see
Construction Schedule) and is the ptimary Practice to prevent
sediment from leaving the site. Detailed design and spillway
configurations are specified in the CALCULATIONS section
of the narrative. The PVC outiet is to be blocked during
sedimentation function (or not installed) until entire
watershed is permanently stabilized and pond is converted to
permanent stormwater management detention / retention
function.
EROSION & SEDIMENT CONTROL and WATER QUALITY PLAN
ANTIQ UA
WILMINGTON TOWNSHIP
NEW HANOVER COUNTY NORTH CAROLINA
OWNER: NATHAN S. SANDERS
P.O. BOX 3167
PHONE [phone]
FAX [phone]
HANOVER L)ESIGN SERVICES, P.A.
LAND SURII k LAND PLANNEFS
319 WALNUT STREET N T(NC. 2S401
PHONE: ONE:(91919) 343-8002
Date:
3-12-97
%oo1e:
AS SHOWN
Dm+n:
✓BM
Check.d
DSH
Pm)ect No:
4893ESCI JM97
Sheet No:
2
�2

r Q��
co
IMPERVIOUS CALCULATIONS:
BUILDINGS: 103,397 SF
ASPHALT: 131,680 SF
CONCRETE: 46,570 SF
CURB: 8,469 SF
TOTAL IMPERVIOUS AREA: 290,116 SF
LEGEND
— EXISTING SWALE
— — — PROPERTY LINE
CENTERLINE
CONTOUR LINE
ASPHALT IMPERVIOUS
CONCRETE IMPERVIOUS
E&� BUILDING IMPERVIOUS
IMPERVIOUS AREA
FOR
ANTIQUA
WILMINGTON TOWNSHIP NEW HANOVER COUNTY
NORTH CAROLINA DECEMBER 9, 2008
50 0 50 100 150
Scate: I' = 50'
SHERWIN D. CRIBB
N.C. PROFESSIONAL LAND SURVEYOR L-1099
1144 SHIPYARD BLVD.
WILMINGTON,NC 28412
910-791-0080
C:\Users\Malpass3\AppData\Local\Temp\ANTIQUA-120908.dwg