SW8060651_APPROVED PLANS_20060808

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
HOC DATE
2�
YYYYMMDD

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
❑ APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE
YYYYMMDD

FIELD WERE MEASURED USING A F.W. BELL MODEL 4060
ELF METER THE READII I GS, IN GAUSS ARE SHOWN
BELOW ON THE DRAWING.
r
REVISED 12 JULY 06
ENGINEER/SURVEYOR
•� \ \ \,\• 4851 p8
H
I �•\. F
342 %
�/zo SOS""�c,(�� \'�•, \ ��`•\.
3 �.
B Sn"C S \� 6t
Ld 1 \
1
IZ
h\
OSHA DOES NOT CURRENTLY HAVE A STANDARD FOR
ELECTROMAGNETIC EXPOSURE IN THE 27-30M Hz
RANGE, (TRANSMITTED POWER IS 60Ht).
IEEE (INSTITUTE FOR El ECTROT41CS AND ELECTRICAL
ENGINEERS( DOES HAVE A STANDARD: IEEE
PC95.6•2002 STANDARD FOR SAFETY LEVELS WITH
RESPECT TO HUMAN EXPOSURE TO EL"OMAGEfIC
FIELDS. 0 TO S kHz
THE IEEE STANDARD PECOMMENDS AN EXPOSURE LIMIT
FOR THE GENERAL PUBLIC OF 0.904 MILLREAAS, (I 1
MILLITESLA=10 GAUSS I THE EXPOSURE LIMIT IN GAUSS
WOULD BE 90.4 GAISSL
AS SHOWN, THE MEASURED MAGNETIC FIELD RANGES
FROM 0.07 MILLITESLAS 70 0.01 MILLITESLAS- AS A
COMPARISION, THE FLOURESCENI LIGHTING IN A
TYPICAL OFFICE MEASURES 0,12 TO 0.05 MILLITESLAS.
es,
--`8[' �•�.
�s�25 `i0»
\ _
I7IV SITE ZONING CLASSIFlCATION RMF
JI �\ EXISTI G PAVED ROADWAY 6577.53 SO. FT.
TOTAL SITE = 5.93 ACRES
� 1
COUNTRY CLUB APTS.
WEST CARTERET HIGH SCHOOL
i
HIGHWAY 70
IF
I
I 6
LLI
9`/^ I M� SIZ
IN N
i \ I
----/-------------------------------------------/ --------A Y-------------------+----------------------------------------------------------
---17-- --'-�-'-----1---------.r-c�-----a-�--.-.__-----------------------
ROBERT M. CHILES, P.E.
ENGINEERS & CONSULTANTS
P.O. BOX 3496
NEW BERN, NORTH CAROLINA 28564-3496
[phone]
--- - - - - - - - 17 - - - - - - - - - - - - - - - - - - - - -
OWNER/DEVELOPER
FOUR SISTERS-00, LLC.
P.O. Box 1018
MOREHEAD CITY, NORTH CAROLINA 28557
SITE DATA
TOTAL AREA
DEED BOOK 352, PAGE 416 = 5.41 ACRES
DEED BOOK 702, PAGE 51 = 0.46 ACRES
TOTAL SITE = 5.93 ACRES
PARCEL 1 IS A PORTION OF TRACT 2,
DEED BOOK 702, PAGE 51 TO BE ADDED
TO TOTAL SITE.
NOTE : THERE ARE NO WETLANDS WITHIN THE PROJECT BOUNDARY
M
Sid
N 70'58�26"• W
`91.0(VTOTAL
(156.00' D.B.702, PG. 51)
9
TE
TO MOREHEAD —>
NORTH�N ",.
MANPG ENT COMA
DNISI N.OFCV,
ARENDELL STREET
i w
/ N
okkFK
SHEET I OF 4
EXISTING CONDITIONS
WELLONGATE APARTMENTS
COUNTRY CLUB ROAD
FOR
r FOUR SISTERS-00, LLC.
MOREHEAD CITY _ CAR_TERET COUNTY NORTH CAROLINA
DATE: 10-16-2°D6 ROBERT M. CHILES, P.E.
JOB 2005139 ENGINEERS AND CONSULTANTS
SCALE:
1' m so' NEW BERN, NORTH CAROLINA

1 L�L ILL',
I 'o
0 A
'.!. I , j at

.5 •I ..1 a S. __ ....... .. 's ,_. -�`j: ! _ ._ ..t. air i'_ . L. .A .L..__, L sii L'i ,Aj:I-
UgM1RY OLIIB A��TB. \ \
sa�oaL \� NOTE: ALL ROOF DRAINS TO BE DIRECTED TO THE STORMWATER COLLECTION SYSTEM
0 Lo!A
G7
90
VICINITY MAP
N/F
COUNTRY CLUB APART
M.C.C. -- ABBITT, L
NOTE:
CANOPY TREES REQUIRED ALONG FRONT
PLANTED ALONG SIDE PROPERTY LINE DUE
TO FRONT OVERHEAD POWER LINE
3
—3
T
1;
5
T-W
T�2
woo + •
COUNTRY cwe
RpAb
�6o R/W
BIORETENTION PLANTING DETAILS 1"=30'
df Fs 14�
y'q6'1
40W
Db�
.
it
.0
NOTE:
DUE TO OVERHEAD ELECTRIC U
PLANTED ONLY. TREE T-3 GROWS
EXCELLENT UNDER POWER LINE.
N/F
WEST HAVEN VILLAGE
s _10
AQ� F� �� 9cF �FR IFS
ce,
Y TREES
REVISED 12 JULY 06
IN
11
Z�
v
v
a �`
0
J�j ^ � .
/ rry ry
SHRUBS
SYMBOL
N0.
BOTANICAL NAME
COMMON NAME
SIZE
SPACING
REMARKS
S-1 Q
16
ILEX VOMITORIA 'NANA'
DWARF YAUPON HOLLEY
3 GALLON
AS SHOWN /
'NANA'
8' O.C. MIN.
MULCH —PINE STRAW
S-2 0
120
JUNIPERUS CHINENSIS
SAYBROOK GOLD JUNIPER
3 GALLON
AS SHOWN /
'SAYBROOK GOLD'
,,SAYBROOK GOLD'
6' O.C. MIN.
MULCH —PINE STRAW
S-3
36
4YPERICUM DENSIFLORUM
ST JOHN'S. WART
3 GALLON
AS SHOWN /
'SAYBROOK GOLD'
ST JOHN'S WART
6' D.C. MIN.
MULCH —PINE STRAW
S-4
38
NIPERUS COMMUNIS
COMMON JUNIPER
3 GALLON
AS SHOWN /
'SAYBROOK GOLD'
.COMPRESSA'
6' O.C. MIN.
MULCH —PINE STRAW
S-5
36
JUNIPERUS HORIZONTALIS
CREEPING JUNIPER
3 GALLON
AS SHOWN /
'SAYBROOK GOLD'
BAR HARBOR
6' O.C_ MIN.
MULCH —PINE STRAW
TREES
SYM80L
0.
001ANICAL NAME
COMMON NAME
SIZE
SPACING
REMARKS
T--1
14
ACER RUI3RUM
RED MAPLE
12-14'
AS SHOWN
MULCH —SHREDDED
T-2
22
QUERCUS PHELLOS
WILLOW OAK
12-14'
AS SHOWN
MULCH —SHREDDED
T-3
19
PISTACIA CHINENSIS
CHINESE PISTACHE
12-14'
AS SHOWN
MULCH —SHREDDED
T-4
12
BETULA N1GRA
RIVER BIRCH
12.-14'
AS SHOWN
MULCH —SHREDDED
T-5
12
JUNIPERUS ARGINIANA
EASTERN RED CEDAR
12-14,
AS SHOWN
MULCH —SHREDDED
NOTE:
EXISTING TREES & UNDERBRUSH TO AIN
ALONG PROPERTY LINE FOR BUFFER
(MINIMUM 10 VDE)
W.H. & JOY W. MOORE
RIGHT �F_
1!
a
RAN ��Rp�IN� ��M;SSIp� o
N� MP�PG�ME��
�oetlntl6rye,rea6br,,,s
� p
GIN
BBgBOBBIiU41��?�
r�T/oN
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a[ .r,
Ile
LEGEND
q)j PP = POWER POLE
OHE = OVERHEAD ELECTRIC LINES
51TE DATA
TOTAL AREA
DEED BOOK 352, PAGE 416 = 5.41 ACRES
DEED BOOK 702, PAGE 51 = 0.46 ACRES
TOTAL SITE = 5.93 ACRES
PARCEL 1 IS A PORTION OF TRACT 2,
DEED BOOK 702, PAGE 51 TO BE ADDED
TO TOTAL SITE.
PHASE ONE = 24 2 BEDROOM UNITS
PHASE TWO = 12 2 BEDROOM UNITS
PHASE THREE = 34 2 BEDROOM UNITS
OWNER / DEVELOPER:
FOUR SISTERS-00, LLC.
P.O. BOX 1018
MOREHEAD CITY, NORTH CAROLINA 28557
[phone]
rcty
ENGINEER / SURVEYOR:
ROBERT M. CHILES, P.E. I
ENGINEERS AND CONSULTANTSSLi..
P.O. BOX 3496 °2
NEW BERN, NORTH CAROLINA 28564-3496
[phone]
SHEET 3 OF 4
BIORETENTION &LANDSCAPE PLAN
AT
WELLONGATE APARTMENTS
COUNTRY CLUB ROAD
FOR
FOUR SISTERS--00, LLC.
MOREHEAD CITY CARTERET COUNTY NORTH CAROLINA
DATE: __10-18-2005 ROBERT M. CHILES, P.E.
JOB NO. 2005139 ENGINEERS AND CONSULTANTS
SCALE: — 1" 60'NEW BERN, NORTH CAROLINA
ls�lly
K4
l r,�sFs! rr 4. ri � '�► i r.I i -, S� !: 1}} I.ai ,

r 1_. _ { I II I .I. ��I ,e' .._ s.__�....____ -.. __: i _:7 _el!_;, '-"i 3'L 41 �.PY"1 37_'i'�i�`::.i:f�3'._^�S`.�.�4
EDGE OF PAVEMEN
ir)
TOP OF PAVEMENT L.=19.0 n_
39' TO 50'
EDGE OF PAVEMENT
25' TO 35± / 2"--3" MULCH w POI-Y/,1UTE EROSION CONTROL
8" DOMED OR 12" SQUARE / MATTING STAKER IN PLACE ON TOP
FLAT TRASH GRATE /
2' WIDE GRASS SHELF
tom- EL.=17. 6
8" 0 ROUND TYP,-----
't 12" ROUND WHERE INDIC
NYLOPLAST DRAIN
ENGINEER jSURVEYOR
ROBERT M. CHILES, P.E.
ENGINEERS & CONSULTANTS
P.O. BOX 3495
NEW BERN, NORTH CAROLINA 28564-3496
[phone]
PLANTING SOIL
D IN PLAN
12" 0 STORM DRAIN - INVERT 13.67
BI4RETENIION AREA
N.T.S.
NOTE: SEE PROJECT SPECIFICATIONS FOR EXPLANATION OF TERMS SUCH AS
PLANTING SOIL, MULCH AND SOD WHERE REFERENCED ABOVE
OWNER DEVELOPER
FOUR SISTERS-00, LLC.
P.O. Box 1018
MOREHEAD CITY, NORTH CAROLINA 28557
119.D
2' WIDE GRASS SHELF
STORMWATER CALCULATIONS
The overall project represents one drainage area as there is one final discharge point and it is in one
riparian drainage basin.
For the following calculations:
Sic retention Area Size Required (9r)
= 0.07 ("C") (Drainage Area)
"C" Coefficient (Rational Method)
WEIGHTING CALCULATION
Drainage area = 168,677.37 sq ft =
BUILDINGS 37987.60 0,95
36088.22
STREETS 32558.56 0,95
30930,63
PARKING 27088.95 0.95
25734,50
SIDEWALKS 16831.97 0.95
15990.37
GRASSIPLANTINGS 52210.29 0.75
39157.72
WEIGHTED"C"TOTALS 166677.37
147901,44 0.89,
Required Size =.07 x "C" x Drainage area
=0.07 X 0,89 X 166,677.37 = 10353.101 sq ft [10,490 sq ff PROVIDED]
0.238 Acres
Drainage Area Runoff (SCS Method)
SCS Curve Numbers (CN)
Grass (Good Condition, Group C) = 74
Pavement = 95
Potential Abstraction (S): S = (I0001CN) -10
Grass S = 3.61 in.
Pavement S = 0.52 in.
Initial Abstraction (1a): la = 0.23
Grass la = 0.70 in.
Pavement la = 0.11 in.
Precipitation (P): P = 1 inch (design)
Runoff (R) R = (P - la)2 I (P + 0.8S)
Grass R = 0.06 in. = 0.005 ft.
Pavement R = 0.56 in. = 0.0467 ft.
Peak Runoff (SCS Type III Distribution, 24 hr Duration Storm, TR-55 Modeling)
1 year rainfall event 3.7 inches
10 year rainfall event 7.0 inches
PEAK RUNOFF 24 HR STORM TR-55 MODELING
1" RAINFALL, P=1 INCH
RUNOFF VOLUME CU FT
RGRASS-1YR= 0.023193406100.2664
RIMPERVIOUS-1YR= 0.5633528275389.442
TOTAL 5489,708 CU FT
1 YEAR, P=3.7 INCHES
RUNOFF VOLUME CU FT
RGRASS-1YR= 1.3798267765965.068
RIMPERVtOUS-IYR= 3.13563890629997.8
TOTAL 35962,86 CU FT
10 YEAR, P=7.0 INCHES
RGRASS-10YR= 4.0420668617474.08
RIMPERVIOUS-10YR= 6.40574841461282.03
TOTAL 78756.11 CU FT
TREATED DRAINAGE AREA
Surface Area: = 166,677.37 sq. ft.
IMPERVIOUS: = 114,800.70 sq. ft.
GRASSEDIPLANTED AREAS: = 51,876,67 sq. ft.
Runoff Volume (SCS): = 5,621 cu. fL
Grass = (0,005) (51,876.67) = 259.4 cu. ft
Pavement = (0.0467) (114,800.70) = 5,3611 cu. ft.
Ponding volume provided: = (la + 6 in) (1/12) (bioretention surface area)
_ (6.7/12) (10490)
= 5,857 cu. ft,
OUTLET FLOW CALCULATIONS
FIRST FLUSH RAINFALL
1" OF RAIN
RUNOFF VOLUME FROM ABOVE = 5,621 CUBIC FEET
SURFACE AREA OF BIORETENTION AREA 10409 SQ FT
INFLOW RATE FOR SOILS = >6.0 IN/HR (WILL USE 4 IN1HR FOR CALCULATIONS)
(AUTRYVILLE AuB FROM USDA SCS MAUAL FOR CARTERET COUNTY)
NO RUNOFF FROM FIRST FLUSH RAINFALL ALL INFILTRATION,
EXCESS RUNOFF ABOVE 1" RAINFALL
I YEAR STORM 3.7 INCHES
RUNOFF=35,962.86 CU FT
FIRST INCH OF RAINFALL INFILTRATES AT 4 IN 1HR
VOLUME INFILTRATED = 3467.69 CUBIC FTIHR OR 0.964 CPS
WITHOUT RISER, SIORETENTION AREA WILL DRAW DOWN
THE 1 YEAR STORM IN 10.4 HOURS
THE 10 YEAR STORM IN 22.7 HOURS V�
WITH RISER DRAWDOWN INCREASES TO 2.053 CFS / r, r V
NOTE
ELEVATION AREA TABLE
ELEVATION
AREA
VOLUME
NET VOLUME
17,67
10490
-
-
18 Iti.11l
11984 _ r2�17
3741.9,
3741.9� 1,, i�yr
18.75
12593
9216.4
12968.3
19
12593
6296.5
19254.8
3
-cj�
T GIVEW13" DIAMETER RISER
Q=CA(2GHP.5 [ STORM DRAINAGE COLLECTION SYSTEM, STORM WATER POND
WHERE
COEFF,unitless)=0.6 t�3 1�y\,,;gENo�' AND EROSION & SEDIMENTATION CONTROL DEVICES SHALL BE
A(AREA, SQ FT)=0.349066 ��, IN PLACE AND FUNCTIONAL PRIOR TO ANY CONSTRUCTION ON
G(GRAVITY)=32.2��`'�-�� THE PARKING LOT
H(AVERAGE HEAD, FEET)=0.4 ,*�*fs4' 4 1
DRAWDOWN WITH RISER �V}k`���� Lt NOTE: ALL ROOF BRAINS TO BE DIRECTED TO
1 YEAR 4.HOURS ��l�SIaN THE STORMWATER COLLECTION SYSTEM
10 YEAR 10.655 55 HOURS U10� SHEET 4 OF 4
6e4uu�v�
REVISED 16AUG06 PER
DWQ REQUEST DATED 15 AUG06
I i, •1, i�+' a1 ���•r L! I.T'•I�-�'���ey1_
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5 ' li i 15- t�.,. �I� { To
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