SW7060212_APPROVED PLANS_20061019

STORMWATER DIVISION CODIN(
POST -CONSTRUCTION PERI
PERMIT NO. SW
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
DOC DATE _Z4L/! '
YYYYMMDD

4
_ _ _', _!-_ �� _.' � _` - ___ -'__- �_- . _._ .._S._ __.r .__-_!-. `--''-- ___._.-_. _r�r � :fit.'•. _..�. _.�-._
ti.
0
OHE OHE
Em
o EXISTING IRON ROD
OHE
0
EX. MH
TOP: 2.43'
INV IN(6"PVC)NW: —0.15'
INV IN(6"TC)NE: —0.46'
INV IN:(B"PVC)E: -0.44' S
INV OUT(6"TC): -0.43'
03
g- ---- --- W___
0.
S s s �� 0�_�
OHE OHE OHE a01t OHE OHE OHE OHE OHE HE —�
SD SD --------- t Sa SD SD
i
to
�i
N
-- -- -- 5 E7C.MH �`�-- -- -- -- _
TOP: 1.42'
MAIN STREET
OHE -
LOCATION MAP
NO SCALE
SITE DATA:
LOT AREA: 16.19* ACRES
PROPERTY ADDRESS: 920 MAIN STREET
COLUMBIA, NC 27925
LAND USAGE: HIGH SCHOOL —MIDDLE SCHOOL
OWNER/DEVELOPER: TYRRELL COUNTY BOARD OF EDUCATION
210 NORTH ROAD STREET
COLUMBIA, NC 27925
�,. }NA E"P 'W= L .
0 EXISTING POWER POLE
EXISTING LIGHT POLE
[) EXISTING CATCH BASIN
Q] EXISTING DROP INLET
Q EXISTING SEWER MANHOLE DEC
q
EXISTING HYDRANT IQ�
o EXISTING WATER METER
04 EXISTING WATER VALVE
—SD—EXISTING STORM DRAIN LINE
5 EXISTING SEWER LINE
OHE EXISTING OVERHEAD ELECTRIC
--X X— EXISTING FENCE LINE T L B A R T L ETT
Syytl if I I
GRAPHIC SCALE
20 0 i0 20 40 . 80
( IN FEET )
1 inch = 20 ft.
CONTRACTORS SHALL VERIFY
AND BE RESPONSIBLE FOR
ALL DIMENSIONS AT JOB.
REVISIONS
DRAWNBY
PRRJECT
0 6 — 0 4
CHECKED BY
DATE
SHEET
SHEET
OF
.-- _ "7 _ - - •n= .m r -:1. .-�T r�"TZ.',•T;�-_: } T�-rc�s?.T--�7,'}r?

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rs
C
C
I-
r
i
OHE
X
X
X
w
V
Y
Z
W D
X
OHE GHE
u
x
0
1
NEW CONCRETE WALKWAY
IPPAF KINGI�=1--
i
o
x
0
U
OHE ONE OHE OHE �Ft1~' . OHE
OHE
I FQEN�
0 EXISTING IRON ROD
0 EXISTING POWER POLE
EXISTING LIGHT POLE
U EXISTING CATCH BASIN
[D EXISTING DROP INLET
Q EXISTING SEWER MANHOLE GRAPHIC SCALE
EXISTING HYDRANT
) EXISTING WATER METER 20 0 la 20 40 s0
t>4 EXISTING WATER VALVE
( IN FEET )
1 inch = 20 it.
OHE
t x rnvF'1?rn r_nN ramp, wAl K
OHE OHE
OHE
OHE —�
OHE OHE OHE O"E —
LOCATION MAP
NO SCALE
SITE DATA
LOT AREA: 16.19:h ACRES
PROPOSED BUILDING AREA: 25,968E SQ. FT.
NEW IMPERVIOUS AREA 30,772 SO. FT.
DEMOLISHED IMPERVIOUS AREA: 17,197 SQ. FT.
OVERALL NEW IMPERVIOUS AREA 13,575 SQ. FT.
OVERALL INCREASE IMP. AREA:
BUILDING HEIGHT:
PROPERTY ADDRESS:
LAND USAGE:
OWNER/DEVELOPER:
SITE NOTES:
1.92%
LESS THAN 35'
920 MAIN STREET
COLUMBIA, NC 27925
MIDDLE SCHOOL
TYRRELL COUNTY BOARD OF EDUCATION
210 NORTH ROAD STREET
COLUMBIA, NC 27925
THIS PROPERTY IS LOCATED IN FLOOD ZONE "AE". BFE-5'.
COMMUNITY PANEL NO. 3720880000 J DATED JANUARY 16, 2004.
THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL WORK ZONE TRAFFIC CONTROL IN
OR ADJACENT TO NCDOT OR CITY R/W. ALL METHODS SHALL CONFORM TO THE
MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MUTCO) AND NCDOT STANDARDS.
SEDIMENTATION AND EROSION CONTROL PERMIT(S) MUST BE ISSUED BY NCDENR
PRIOR TO ANY EARTH DISTURBING ACTIVITY.
THE CONTRACTOR SHALL CONTACT NC ONE CALL, 1-800-632-4949, PRIOR TO THE
BEGINNING ANY EARTH DISTURBING ACTIVITY.
THE UTILITY LOCATIONS SHOWN ON THIS MAP ARE APPROXIMATE ONLY, AND ARE NOT
RELIABLE FOR CONSTRUCTION PURPOSES FOR ACTUAL FIELD LOCATIONS.
REFER TO ARCHITECTURAL PLANS FOR EXACT BUILDING DIMENSIONS AND FINAL
PLUMBING SIZES AND LOCATIONS.
HANDICAP ACCESSIBLE AREAS SHALL NOT EXCEED 1/4" RISE PER FOOT
EXCEPT IN RAMP AREAS. HC RAMP SHALL HAVE NO GREATER SLOPE THAN 1 IN
12. RAMPS OVER 1 IN 20 SHALL REQUIRE EDGE PROTECTION PER NC
ACCESSINLTTY CODE SECTION 5.5.
ALL HANDICAP ACCESSIBLE AREAS SHALL CONFORM TO THE REQUIREMENTS OF
4.7.1, 4.7.2 do 6.2.1.2 THE OF VOLUME 1—C NC STATE BUILDING CODE:
CONTRACTORS SHALL VERIFY
AND BE RESPONSIBLE FOR
ALL DIMENSIONS AT JOB,
REVISIONS
DRAWN BY
PROJECT
0 6 - 0 4
0-ECKED BY
DATE
swu
S P2
awsr
OF
-- 1 7T- 7,�,t� T'Sz —w -�T— 7.— ;F s'7^� t S►'
'?f5' �c
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Lr I��f ti.�"j ,��_,�•�..r� �. Fr �, j• t,�

0
0
N
r
N
20
LEGENIQ
0
EXISTING
IRON ROD
1J
WSTING
POWER POLE
�x
EXISTING
LIGHT POLE
0
EXISTING
CATCH BASIN
m
EXISTING
DROP INLET
O
EXISTING
SEWER MANHOLE
<�
EXISTING
HYDRANT
o
EXISTING
WATER METER
Ca
EXISTING
WATER VALVE
OHE
OHE
GRAPHIC SCALE
0 10 20 . 40
( IN FEET )
f inch = 20 ft.
IX. MH
TOP., 2.43'
INV IN(6"PVC)NW. —0.15'
INV IN(8"TC)NE: -0.46'
INV IN:(6"PVC)E: -0.44'
INV OUT(6" TC)- -0.43'
C
OHE OHE OHE
so
k
IX. DI
TOP 1.16'
INV OUT(10-PVC)-10.29'
+
(INVERT IN 1.02') WITH 1 "PVC
y
i
S S -
OHE
SD
to
F�.
S
OHE OHE / OHE OHE HE --�Y
SID ----- SD SD SID
P?, L E T
r-1
LOCATION MAP
NO SCALE
ORANGE CONSTRUCTION SAFETY FENCE TO BE INSTALLED AROUND ENTIRE CONSTRUCTION AREA
PRIOR TO BEGINNING ANY WORK. FENCING SHALL BE OSHA ORANGE, 1" MESH, 48" HIGH
POLYETHYLENE. FENCE SHALL BE SUPPORTED EVERY EIGHT FEET WITH 60" WOOD POSTS HAVING A
MINIMUM CROSS SECTION SURFACE AREA OF 1 A- OR STEEL T—POST OR U—POST AND SECURED
WITH 5 WIRE TIES AT EACH POST. FENCE SHALL ICE MAINTAINED UNTIL COMPLETION OF
CONSTRUCTION.
ALL S&E CONTROL DEVICES MUST BE INSTALLED PRIOR TO DEMOLITION AND REMAIN IN PLACE UNTIL
ADEQUATE GROUND COVER IS ESTABLISHED.
CONTRACTOR SHALL NOTIFY AND COOPERATE WITH ALL UTILITY COMPANIES OR FIRMS HAVING FACILITIES
ON OR ADJACENT TO THE SITE BEFORE DISTURBING, ALTERING, REMOVING, RELOCATING, ADJUSTING OR
CONNECTING TO SAID FACILITIES. CONTRACTOR SHALL RAISE OR LOWER TOPS OF EXISTING MANHOLES AS
REQUIRED TO MATCH FINISHED GRADES.
UNUSABLE EXCAVATED MATERIALS AND ALL WASTE RESULTING FROM CLEARING AND GRUBBING SHALL BE
DISPOSED OF OFF—SfTE BY CONTRACTOR AT AN APPROVED SITE.
BEFORE ANY MACHINE WORK IS DONE, CONTRACTOR SHALL STAKE OUT AND MARK ITEMS ESTABLISHED
BY THE SITE PLAN. CONTROL POINTS SHALL BE PRESERVED AT ALL TIMES DURING THE COURSE OF THE
PROJECT. LACK OF THE PROPER WORKING POINTS AND GRADE STAKES MAY REQUIRE CESSATION OF OPERATIONS
UNTIL SUCH POINTS AND GRADES HAVE BEEN REPLACED TO THE OWNERS SATISFACTION.
CONTACT NO ONE CALL 1-800-632-4949 AT LEAST 413 HOURS BEFORE DIGGING.
THE CONTRACTOR SHALL BE RESPONSIBLE FOR REVIEWING ALL EXISTING JOB CONDITIONS. ANY ADVERSE CONDITIONS
AFFECTING WORK SHOWN ON THESE DRAWINGS SHALL BE BROUGHT TO THE ATTENTION OF THE ENGINEER FOR
POSSIBLE CLARIFICATION OR RECONCILIATION.
THESE DRAWINGS DO NOT CONTAIN THE REQUIREMENTS FOR JOB SAFETY. ALL PROVISIONS FOR SAFETY
SHALL BE SOLE RESPONSIBILITY OF THE CONTRACTOR.
THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL WORK ZONE TRAFFIC CONTROL IN OR ADJACENT TO
NCDOT OR CITY RIGHT—OF-WAY. ALL METHODS SHALL CONFORM TO THE MANUAL ON UNIFORM TRAFFIC
CONTROL DEVICES (MUTCO) AND NCDOT STANDARDS.
fill BARTLETT
ENGINEERING & SURVEYING, PC
1906 NASH STREET. NORTH TELE: [phone]
' WILSON. N.C. 27893 FAX: [phone]
L EMAILinfoghortletteng.com
20106 DATE: JULY 2006 SURVEY BY: NA PROJECT:
o� �G
SCALE: 1 " = 20' DRAWN BY: LR 06-264
% 0% REVISIONS: CODE: DKW
DWG FILE:06264SP
DEMOLITION PLAN
I COLUMBIA TOWNSHIP TYRRELL COUNTY
NORTH CAROLINA
ZONE: ?
47A
3
0
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0
E
0
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Q
JO
om�
8
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UV
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a:
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0
CONTRACTORS SHALL VITRIFY
AND BE RESPONSIBLE FOR
ALL DIMENSIONS AT JOB.
REVISIONS
DRAWN BY
PROJECT
0 6 - 04
CHFCKEOBY
DATE
SHEET
S P 3
SHEET
CF
1 ! °} ,� a s : •� w s r r 1 p +. i t ;. y 1, -:r' tl. ! w! w 1 4
h
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� _ i l r M: � 1. � ,.. _..,'S.r 21 _� Iw.k',.1 .5 �1'. ,.n. • .... .. .... ..r ... . ., .., .t ..? Dw.i �. 1.1. Y1i :1. �11w }�F�.�'�l`',�•i l����Lr.Si��l+•A:.i.ti! . J {i.L:� ., ��I�

EX. 12' PVC
INV OUT -1.34'
LIMITS OF
ISTURBED AREA i
x I
I
M
i � I
tr
I s
-v
x �
I
x I .
� I I
x I �
LCHUNE 1
IL I
EROSION CONTROL LEGEND
ELEV----- -- EXISTING CONTOUR
ELEV PROPOSED CONTOUR
- • - LIMITS OF DISTURBANCE
-x-x- SILT FENCE
11 INLET PROTECTION
IEMM
o EXISTING IRON ROD
.f EXISTING POWER POLE
* EXISTING LIGHT POLE
0 EXISTING CATCH BASIN
m EXISTING DROP INLET
Q EXISTING SEWER MANHOLE
<z EXISTING HYDRANT
EXISTING WATER METER
>4 EXISTING WATER VALVE
L
o
I
LIMITS OF
LINE 1
i
'._ TEX.
_.......
_....`._...�,......_,_._...._._.�....._..�._..._. .�SILT FENCE
DI I
DISTURBED AREA I rf m ire OUT(io•PVC) -129'
! ( +C_
j c>IL + TOPSOIL
>5 STOCKPILE/
CAP OR PLUG
EXISTING 10"LINE
r
f
PROPOSED Off I
d
TOP 1.50'
INV OUT(15 )--0.73'
INV IN (80 t) -0,73'
x
�
!n
Q�QIG
PROPOSED DIA2 N
TOP 1.75' x i
INV OUT(12-PVC)--0.61 !
W
x
V
Y
Z
t'
I LLI
CIL
! xQ
n =
li CL s
R
]C �d
3 x Ir •.;:
K /U
Q d 0
E
OHE - OH
PROPOSED DI/3-
TOP 2.60'
INV OUT(1O"PVC)
XX !••A
EX. 6. GHAIN I
UNK FENCE
128
�I
Z I \
aG •{
zZ 1
U
" W
EMERGENCY SPILLWAY
ELEVATION 3.75'
UNDERDRAIN
ROOF
BRAIN UNDERDRAIN OUTLET BIORETEIVTION AREA
(BOTTOM ELEI�A�TION 3.0')
UNDERDRAIN p .
'i 4r- -�. • •• .e
� I
� I
I I
f I
f
I �� r-2.0---
1 / �J
� / t
DRAINAGE AREA TO
BIORETENI ON AREA
(0.753 ACRES)
6Z
01I
'
>
'Cq
c
Ii
Ica
EX. VOCATIONAL
BUILDING
I
!
_
I
STEPS ,
w
a
.4
SW=5.20
j
�. `:
'�.'
TIE TO .
0
[ .
-0
EXISTING
SIDEWALK
/
SW-5.10 -
-A
PROPOSED DI#3A
o
TOP 2,60'
0
•
INV OW(10-PVC) -0.10'
r��
.4
o
SW"•
if
SW-4.55
IX. D112 {TO BE
DEMOU;
TOP 2.35'
3.0 INV OUT 6-PVC)1.25'
x
IX. DI 1
TOP 2.13'
EX. 10" CMP
INV OUT NEW-1.40'
00
INV OUT 1.7t')1
�
sn
r
w
SW -
Svc
SITE DATA:
AREA IN TRACT 16.19 ACRES
DISTURBED AREA 2.00t ACRES
LOCATION MAP
NO SCALE
NOTE: ALL ROOF DRAINGE TO BE PIPED TO
BIORETENTION AREA LOCATED AT REAR OF GYM
(INVERT ELEVATION 3.0').
I
NOTE:
ALL ROOF DRAINS ARE TO BE PIPED
PROPOSED DI#4 '� TO THE BIORETENTION AREA. PROVIDE
TOP 1.50' INV 1N (8-PVC) -0.16- OUTLET PROTECTION FOR PIPE OUTLET
f
INV OUT(10"PVC) -0.16' ENDS. !JJ
3.0
4.0
a
110111111111111
... x'
"� _U
179
M
TEMPORARY CONSTRUCTION
ENTRANCE
!
Sw-5s0 ROOF
DRAIN
OUTLET/
00 _ . - . . r....__"
-
.- ...._.._..
. _ _ . . _.. _.,.. _ . _ ..,_. , . _ ..� • ^- -- -, -.-r
'•'•• •�:;;;.�';:;:;:
SILT FENCE •''
�••
irn
�'• ••
I
PROPOSED DI#5
TOP 1.80'
f Q
II
r INN Ot1T(8"PVC) ; 0.03'
OHE OHE OHE OHE OHE
{
OHE OHE OHE
-
x
U
GYMNASIUM { ' r �
O / I � (APROPOSEDDI#6
TOP 2.85'
FFE: 5.2 I� ^ �� INV OUT(8"PVC) 1.57'
�J
_n
...
f*1
•
SW-5.00
4;
•0, .
T�
>■ ■ ■
_j
N
a 06. .
SW=5.20 5W-5.00
5W=4.24
� '
-
SW-3.48
SLOPE '1.20. , - •• "••
-
SW=5.00 a :• • • 6 a .•••
_ . ° •
•. •. •
,. t d
°
4
NEW CONCRETE
SIDEWALK
4.0 ■
■' '
■
sw-5.00
cv
EX. 6' CHAIN
3•
Z
t3 S
a
SW=3.0O LINK FENCE/
IX, D113 GAZE
.a
O a '
�'
d =
'
r- PIPE G :. +. a
TOP 2.16'
INV IN NEW (8-PVC) 1.02
: • ,
,
•
PVC/HDP
;
INV OUTO0" 1.02'
.
SW-2r'
.7B
N
EX. COVERED CONCRETE
ISTING „ Nv
TIE TO EX. SIDWALK SIDEWALK o r�
- - - - - - - -r
r �
\ EX. PAF KING -E so 313 IX. DI I Ig
ABANDON DI#2 AND CONNECT INV OUT(10"PV6 0.81' IX. DI
�- DI#1 (INVERT OUT 1.40') TO DI#3
- (INVERT IN 1.02) WITH 10-PVC
W
0
STORM DRAIN SCHEDULE (10-YEAR
n = 0.013
STORM)
NOTE: MLL PIPE MATERIAL TO BE PVC OR EQUIVALENT
A
tc
I
Cc
Q10
'TOP OF
FROM
TO
PIPE
INLET
TOTAL
TIME OF
INTENSITY
RUNOFF
DSCHRG
SLOPE
Dtheo
SIZE
VI
LENGTH
UPPER
LOWER
STRUCTURE
FT
2.13
2.85
1.80
EXDt#1
01#6
DI#5
EXDI#3
EXDI
DI#4
RUN
G
F
E
AREA
(ACRES)
0.18
0.12
0.11
AREA
(ACRES)
0.18
0.12
0.1 f
CONIC
(MIN)
5
5
5
(WIHR)
7.20 _
7.20
7.20
COEFF
0.8
0.8
0.8
(CFS)
1.0
0.7
0.6
(FT/FT)
0.0031
0.0030
0.0030
(INCHES)
9.4
8.1
7.8
(INCHES)
8
8
8
(FT/SEC)
1.9
1.9
1.9
PIPE
(FT)
121
90
44
INVERT
1,40
1.57
-0.03
INVERT
1.02
1.30
-0.16
1.50
OI#4
DI#1
D
0.10
-0 21
5
7.20
0.8
12
0.0030
9.9
10
2.2
190
-0.16
-0.73
2.60
Dt#3A
DI#3
Z
0.07
0.07
5
7,20
0.8
OA
0.0030
6.6
8
1.9
62
-0.10
-0.28
2.60
DI#3
DI#2
C
0.16
0.23
5
7.20
0.8
1.3
0.0030
10.4
10
2.2
109
-0.28
-0.61
175
1.50
DI#2
DI#1
ROOF DRAIN
DI#1 B
OUT A
OUTLETS
0.09
0.09
0,29
0.33
0.63
0.29
5
5
5
7.20
7.20
7.20
0.8
0.8
1 0.9
1.9
3.6
1.9
0.0030
0,0030
0.0030
11.8
15.1
11.9
12
1 15
12
2.5
2.9
2.5
40
204
NA
0.61
-0.73
NA
0.73
-1.34
31,50
�0­­POF STRUCTURES AREAPFROXIMATEAND MAY VARY DUE TO ACTUAL FS-I) CONDITIONS
TOP 2.27'
INV IN(10"PVC) 0.27' L - - - - - 5 go
INV OUT(1O"PVC) 0.27' JUNCTION
(NOT LOCATED) TO Df
TOP 2.42'
INV IN(1O-PVC) 0.52'
00 INV OUT(10"PVC) 0.52'
EX, DI
Li TOP 2.13'
INV IN(10"PVC) -0.21'
INV OUT(1o'PVC) -0.21'
GRAPHIC SCALE
20 0 10 20 40 so
( IN FEET )
1. inch = 20 ft.
Eel
APPROXIMATE
LOCATIONS OF EX.
GEOTHERMAL
WELLS (TYP.)
NOTE: ADJUST LOCATION OF STORM
DRAIN PIPE AS NECESSARY TO AVOID
CONTACT WITH WELLS
EX. CLASSROOMS
3.2 BMETENTtON
TABLE 3.2-1
Material SDecifications
Material
specification
Size
Notes
Plantings
Native vegetation
1' minimum tree
Plantings are site -specific
diameter
Planting soil (2' to 4'
sand - 85-88 percent
n/a
Low P-Index Soils (20 to 40
deep, 1.5' minimum)
optimal) needed In phosphorus
clay - less than 5 percent
sensitive woodsheds
compost - 3-5%
Organic Matter recommended
Mulch
Coarse shredded hardwood
Aged 6 months, minimum
replaced 1-2 fines annually
Gootextile
Class "C" -• apparent opening
We
For use as necessary beneath
size (ASTM-0-4751), grab
underdrains only
tensile strength (ASTM-D-
4632), puncture resistance
(ASTM-D-4833)
Underdrain gravel
Washed 57. A 2" layer of
0.25" to 0.75'
stone such as #8, 57, 78 or
89 is recommended.
Underdrain piping
F 768, Type PS 28 or
Should convey 10
3/8• perf. aQ 6' on center, 4 holes
AASHTO M-278
times maximum
per row, minimum of 3" of gravel
flow from soil
over pipes; not necessary
medium. Minimum
undemeath pipes
of 4' to 6' rfgid
schedule 40 PVC
or SDR35 or
smooth wall
corrugated plastic
pipe. Minimum of
two p'I for
redundancy.
Adapted from 2000 Maryland Stormwater Design Manual
BIORETENTION AREA -DESIGN CALCULATIONS
INCHES RUNOFF
1.00
BIORETENTION
AREA(VOLUMES
RUNOFF VOLUME (CUBIC FEET)=AREA"RUNOFF _ DEPTH
DRAINAGE AREA (SQ FEET) 32813
_
AREA
INCR._V_OL
CUMM. VOL
ELEV.�
(SQ.FT.)
(CU.FT.)
(CU.FT.)
STORAGE NEEDED
CU FEET
2734
3.0'
3654.2
0
0
STORAGE PROVIDED
CU FEET
3034
3,26
3912.8
946
946
3.5'
4177.4.
1011
1956.8
STORAGE DEPTH=
9
INCHES
3.75'
4448
1 2023.7
3034.8
BIORETENTION AREA NEEDED
3646
BIORETENTION AREA PROVIDED
W54
SQUARE FT (ELEV. 3.0')
A FILL 50IL LAYER OF 2 FT THICK
ASSUME PERMEABILITY OF 1 INCH/HOUR AND
qp
1.375
INIHR PER UNIT AREA
Drawdown Time
6.5
24.0
FIRS TO BOTTOM SURFACE (3.0')
HRS TO DROP 2' BELOW BOTTOM SURFACE (1.D)
Q (qP x area)
Q (I0 X MINIMUM)
0,12
L1.2
CU FTISEC
_
-
USING MANNING'S EQUATION (N x D=16 x (Q x n /SO.5 )0.375)
N x D= 9.22478877'4 INCHES (AREA=
66.80
SQUARE INCHES)
6
INCHES
(AREA=
I 28.26
SQUARE INCHES)
S
INCHES
(AREA=
50.24
SQUARE INCHES)
THEREFORE, USE THREE 6 INCH DIAMETER UNDERDRAINS IN THE GRAVEL LAYER
3
N �
8
3
US
N
U.
co
N
N
1
l!.� N
ry N
F-
CONTRACTORS SHALL VERIFY
AND BE RESPONSIBLE FOR
ALL DIMENSIONS AT JOB.
REMION9
DRAriN BY
PROJECT
O 6 - 0 4
CHECKEDBY
DATE
%M
S P4
5HEU
OF
'� i�. � � ri +, !� .�,.�.i•11�1' I 1�I t I : t,i � I•.

U
n
a�
V)
0
I
M
12 GAUGE 4" X 4' OR 2" X 4" WELDED WIRE HOOKED ONTO 1) TOTAL DRAINAGE AREA FLOWING INTO STILT
PREFORMED CHANNELS ON. METAL POSTS, OR FASTENED FENCE MAY NOT EXCEED 1 ACRE
TO CEDAR OR WOOD POSTS W/N0, 8 STAPLES 2) SILT FENCES SHOULD NOT BE USED AT PIPE
OUTLETS OR IN AREAS OF CONCENTRATED
ULTRAVIOLET RESISTANCE (BLACK) MIFIF) FABRIC FLOW (CREEKS, DITCHES, SWALES ETC.)
OR EQUIVALENT SECURED TO WIRE W/METAL
CUPS OR WIRE AT 8" ON CENTER
MAX. SEDIMENT STORAGE LEVEL 10' O.C.
REMOVE SIDIMENT WHEN THIS LEVEL MAX
IS REACHED OR AS DIRECTED BY
CONSERVATION INSPECTOR
_� SILT FENCE ��
SHEET DRAINAGE (ONLY)
NATURAL GRADE
CARRY APPROX. 12" FABRIC INTO TRENCH COVER
W/SOIL & TAMP BACKFTLL
CARRY 6" OF WIRE INTO TRENCH
METAL, CEDAR OR 4" X 4" TREATED WOOD POSTS
AT 10' O.C. MAX., CEDAR & WOOD POST SHOULD
BE V-0" MIN.
SEDIMENT STORAGE PIT
FLOW FLOW OF WATER
TO INCREASE STORAGE CAPACITY AND
PROLONG THE LIFT OF THE SILT FENCE,
IT 1S GENERALLY ADVISABLE TO DIG
A SEDIMENT PIT IN FRONT OF SILT
FENCE WHENEVER POSSIBLE.
MNNTENANCE
INSPECT SEDIMENT FENCE AT LEAST ONCE A WEEK OR AFTER EACH RAINFALL MAKE ANY REQUIRED
REPAIRS IMMEDIATLELY.
SHOULD THE FABRIC OF A SEDIMENT FENCE COLLAPSE, TEAR, DECOMPOSE OR BECOME INEFFECTIVE,
REPLACE IT PROMPTLY. REPLACE BURLAP EVERY 60 DAYS.
REMOVE SEDIMENT DEPOSITS AS NECESSARY TO PROVIDE ADEQUATE STORAGE VOLUME FOR THE NEXT
RAIN TO REDUCE PRESSURE ON THE FENCE. TAKE CARE TO AVOID UNDERMINING THE FENCE DURING
CLEANOVT.
REMOVE ALL FENCING MATERIAL AND UNSTABLE SEDIMENT DEPOSITS AND BRING THE AREA TO GRADE.
AND STABILIZE IT AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN PROPERLY STABILIZED.
ROOF DRAIN INLET
80TTOM ELEVATION 3.0'
SILT FENCE DETAIL
NO SCALE
DISSIPATOR PAD
3" MULCH LAYER
9" PONDING DEPTH ��
GRAVEL LAYER WITH THREE 6' UNDERDRAINS
EMERGENCY WEIR 3.75'
2 FT. SAND LAYER
A HOMOGENEOUS SOIL MIX OF 85-88 PERCENT CONSTRUCTION SAND: 8-12 PERCENT FINES (SILT AND CLAY) AND 3-5 PERCENT
ORGANIC MATTER SHALL BE USED. MULCH LAYER SHOULD BE STANDARD LANDSCAPING COARSE SHREDDED HARDWOOD MULCH OR
CHIPS UNIFORMLY PLACED ABOUT 3 INCHES DEEP AND ADDED 1-2 TIMES PER YEAR AND COMPLETELY REMOVED/REPLACED ONCE
EVERY TWO YEARS.
UNDERDRAINS:
UNDERDRAINS MUST BE PLACED ON A 3-FOOT-WIDE SECTION OF FILTER CLOTH, FOLLOWED BY THE GRAVEL BEDDING. THE MAIN
COLLECTOR PIPE FOR UNDERDRAIN SYSTEMS MUST BE CONSTRUCTED AT A MINIMUM SLOPE OF 0.5%. CLEAN -OUT PIPES MUST BE
PROVIDED FOR ENDS OF THE UNDERDRAIN PIPES (ONE MINIMUM PER EVERY 1,000 SQUARE FEET OF SURFACE AREA).
BIORETENTION AREA
No Scale
BIORETENTION AREA -DESIGN CALCULATIONS
RUNOFF VOLUME (CUBIC
STORAGE NEEDED
INCHES RUNOFF
FEET)=AREA*RUNOFF
DRAINAGE AREA (SQ
CU FEET
DEPTH
FEET)
1.00
32813
2734
BIORETENTION
ELEV.
3.0'
AREA/VOLUMES
AREA INCR. VOL CUMM. VOL
(SQ.FT.) (CU.FT.) (CU. FT.)
3654.2 0 0
STORAGE PROVIDED
CU FEET
3034
3.25'
3912.8
946
946
3. 5'
4177 A
1011
1.956.8
STORAGE DEPTH=
BIORETENTION AREA NEEDED
BIORETENTION AREA PROVIDED
9
3646
36541
INCHES
SQUARE FT (ELEV. 3.0')
3.75'
4448
2023.7
3034.8
ASSUME PERMEABILITY OF 1 INCHIHOUR AND
A FILL SOIL LAYER OF.2 FT THICK
qP
1.375
IN/HR PER UNIT AREA
Drawdown Time
Q (qp x area)
6.5
24.0
0.12
HRS TO BOTTOM SURFACE (3.0')
HRS TO DROP 2' BELOW BOTTOM SURFACE
(1.0')
Q (10 X MINIMUM)
1.2
CU FTISEC
USING MANNING'S EQUATION (N x D=16 x (Q x n ISQ.5 )0.375)
N x D=
9.224788774
6
INCHES
INCHES
(AREA=
(AREA=
66.80
28.26
SQUARE INCHES)
SQUARE INCHES)
8 INCHES (AREA= 50.24 SQUARE INCHES)
THEREFORE, USE THREE 6 INCH DIAMETER UNDERDRAINS IN THE GRAVEL LAYER
NOTES
1. GUY WIRES NOT PERMITTED ON STREET
RIGHT OF WAY.
2. REMOVE ALL TREATED OR PLASTIC COATED
BURLAP FROM PLANT BALL
3. INSTALL TOP OF PLANT BALL UP TO
3"-4" ABOVE ExtS11NG GRADE.
4. SOAK PLANT BALL AND PR IMMEDIATELY
AFTER INSTALLATION.
5. KEEP MULCH 2" AWAY FROM TREE
ARBORTAPE
TRUNK BASE.
(WHITE COLOR)
6. REMOVE ALL STRING OR WIRE FROM
3 STRANDS EVENLY
BASE OF TREE
SPACED AROUND TREE
7. INSTALL ARSORTAPE AS PER AR13ORTAPE
INSTRUCTIONS.
3" LAYER OF MULCH
4" SAUCER BERM TO
FINISHED GRAD
R�TNN WATER.
2 x z WOOD STAKE
2" X 2" X 30" WOOD STAKE {?t
,x., 1/3 OF
TOPFROBALL
BUR
/ 4" SAUCER BERM
TOPSOIL REMOVED FROM HOLE
gg]
Q
UNDISTURBED SOIL
UNDER BALL To MINIMIZE
SETTLEMENT
-
TYPICAL TREE DETAIL
NO SCALE
INIMUM LIMIT OF MULCH
x
TOPSOIL REMOVED FROM HOLE
a
TYPICAL TREE PLAN
NO SCALE
PLANTING DETAIL -LARGE
MATURING TREE
NO SCALE
DEFINMON
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN
DROP INLET, CURB INLET, OR PIPE INVERT,
PURPOSE
TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS PRIOR TO
PERMANENT STABIUZA11ON OF THE DISTURBED AREA
CONDITIONS WHERE PRACTICE APPLIES
WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT
STABILIZATION OF THE DISTURBED AREA. DIFFERENT TYPES OF STRUCTURES ARE AP-
PUCABLE TO DIFFERENT CONDITIONS.
SILT FENCE DROP INLET SEDIMENT FILTER
A. U.Y. RESISTANT (BLACK) GEOTEXTILE OR EQUIV. FABRIC CUT FROM A
CONTINUOUS ROLL TO MINIMIZE JOINTS (MUST HAVE AT LEAST 1) .
B. STAKES SHALL BE TREATED METAL WITH A MINIMUM OF 2.0 FEET IN THE GROUND,
C. STAPLES SHALL BE OF HEAVY DUTY WIRE AT LEAST 1/2- INCHES LONG,
D. STAKES SHALL BE SPACED AROUND THE PERIMETER OF THE INLET A
MAXIMUM OF THREE FEET APART AND SECURELY DRIVEN INTO THE GROUND
(MINIMUM OF 1.0 FOOT).
E. A TRENCH SHALL BE EXCAVATED APPROX. 4" WIDE AND 4" DEEP
AROUND THE OUTSIDE PERIMETER OF THE STAKES.
F, USE 12 GAUGE WIRE, 4"x 4" OR 4"x 2".
WIRE AND FABRIC SHALL BE STAPLED TO THE WOODEN STAKES
(FABRIC FASTENED TO THE WIRE AT THE TOP WITH WIRE TIES)
WITH 8" OF THE FABRIC AND 4" OF THE WIRE EXTENDING INTO
THE TRENCH. THE HEIGHT OF THE FILTER BARRIER SHALL BE
15" MIN. AND NOT EXCEED 18".
G. THE TRENCH SHALL BE BACKFlELD WITH SOIL COMPACTED OR
CRUSHED STONE OVER THE FABRIC,
GALVANIZED WIRE
#57 WASHED STONE
PLACED TO A MINIMUM OF
12" ABOVE TOP OF BOX
SEDIMENT LADEN RUNOFF
\ 7
•a e
4 •
e�
A e
e o
o•e
BURIED WIRE & FILTER FABRIC
DROP INLET WITH GRATE
FILTERED WATER
STORM DRAIN
INLET PROTECTION
NO SCALE
CONSTRUCTION SEQUENCE:
1, NO WORK TO BE DONE ON SITE UNTIL THE SEDIMENTATION AND EROSION
CONTROL PLAN HAS BEEN APPROVED AND PERMIT ACQUIRED.
2. INSTALL APPLICABLE E&S CONTROL MEASURES PRIOR TO ONSET OF GRADING ACTIVITIES.
3. INSTALL CONSTRUCTION ENTRANCE AND PERIMETER SILT FENCE
ACCORDING TO PLANS AND AS NEEDED.
4. BEGIN DEMOLITION ACTIVITIES.
5. BEGIN GRADING AND MAINTAIN DEVICES AS NEEDED.
6. BEGIN CONSTRUCTION OF STORM DRAINAGE SYSTEM.
7. UNTIL BOXES ARE BUILT AND YARD INLET DEVICES INSTALLED, INSTALL AND MAINTAIN
STORM DRAIN UNDER CONSTRUCTION DEVICE AT END OF DAY OR ONSET OF RAIN.
B. USE BLOCK AND GRAVEL DEVICE OR ACCEPTABLE ALTERNATIVE IN PARKING AREAS.
9. CURB INLET OR BLOCK AND GRAVEL INLET PROTECTION TO BE INSTALLED
AFTER GRATES ARE SET OR AS SOON AS BOX IS BACKFILLED.
10. INSTALL SILT FENCE OVER AND AROUND PIPE OUTLETS.
11. BIORETENTION AREA TO BE INSTALLED WITH APPROPRIATE FILL MATERIAL AND
PROVIDED WITH TEMPORARY GROUND COVER.
12. VEGETATION TO BE ESTABLLISHED ON SLOPES OR OTHER AREAS (INCLUDING STOCKPILE AREAS)
WITHIN 21 CALENDAR DAYS FOLLOWING COMPLETION OF ANY PHASE OF GRADING. SEEDING TO
BE DONE AT RATES AS INDICATED ON PLAN.
13. WHEN CONSTRUCTION IS COMPLETE AND ALL DISTURBED AREAS ARE STABILIZED
COMPLETELY, INCLUDING EASEMENTS, LOT IMPROVEMENTS, AND WASTE PILES,
REMOVE ALL TEMPORARY MEASURES.
MAINTENANCE:
1, EROSION AND SEDIMENTATION CONTROL DEVICES SHALL BE CHECKED
AT LEAST ONCE EVERY WEEK AND AFTER EVERY RUN-OFF PRODUCING
RAINFALL.
2. SEDIMENT SHALL BE REMOVED AND DEVICES REPAIRED AND/OR
REPLACED AS NECESSARY.
SEEDBED PREPARATION:
NOTES:
CHISEL COMPACTED AREAS AND SPREAD TOPSOIL 3" DEEP OVER
ADVERSE SOIL CONDITIONS, IF AVAILABLE..
SHEET OR OVERLAND FLOWS
ONLY. GROUND SLOPE NOT TO
RIP ENTIRE AREA 6" DEEP.
EXCEED 5%. MAX. D.A. =
REMOVE ALL LOOSE ROCK, ROOTS, AND OTHER OBSTRUCTIONS
APPROX. 1 ACRE.
LEAVING SURFACE REASONABLY SMOOTH AND UNIFORM.
APPLY AGRICULTURAL LIME AND FERTILIZER UNIFORMLY AND MIX
WITH SOIL
CONTINUE TILLAGE UNTIL A WELL PULVERIZED, REASONABLY UNIFORM
SEEDBED IS PREPARED 4" TO 6" DEEP.
SPREAD SEED ON FRESHLY PREPARED SEEDBED AND COVER LIGHTLY
WITH SEEDING EQUIPMENT OR CULTIPACKER AFTER SEEDING.
MULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULCH.
APPLICABLE AT ALL POINTS OF INGRESS & EGRESS UNTIL SITE IS STABILIZED.
FREQUENT CHECKS OF THE DEVICE AND TIMELY MAINTENANCE MUST BE PROVIDED.
NOTES:
A. N.C.D.O.T. # 5 OR # 57 WASHED STONE SHALL BE USED.
PAD TO BE 50' L X 20'W X 6"D
B. TURNING RADIUS TO BE SUFFICIENT TO ACCOMMODATE LARGER TRUCKS
C. ENTRANCE(S) SHOULD BE LOCATED TO PROVIDE FOR MAXIMUM
UTILIZATION BY ALL CONSTRUCTION TRUCKS.
D. MUST BE MAINTAINED IN A CONDITION WHICH WILL PREVENT TRACKING
OR DIRECT FLOW OF TRAFFIC ONTO STREETS. PERIODIC TOP DRESSING
WITH STONE WILL BE NECESSARY, KEEP SOME ON HAND.
E. ANY MATERIAL WHICH STILL MAKES IT ONTO THE ROAD MUST BE CLEANED
IMMEDIATELY.
MAUNTENANCE
MAINTAIN THE GRAVEL PAD IN A CONDITION TO PREVENT MUD AND SEDIMENT FROM
LEAVING THE CONSTRUCTION SITE. THIS MAY REQUIRE PERIODIC TOPDRESSING WITH
2-INCH STONE. AFTER EACH RAINFALL, INSPECT ANY STRUCTURE USED TO TRAP
SEDIMENT AND CLEAN FT OUT AS NECESSARY. IMMEDIATELY REMOVE ALL OBJECTIONABLE
MATERIALS SPILLED, WASHED, OR TRACKED ONTO PUBLIC ROADWAYS.
CONSTRUCTION ENTRANCE
NO SCALE
BIORETENTION AREA GENERAL NOTES:
ROOT STOCK OF THE PLANT MATERIAL MUST BE KEPT MOIST DURING TRANSPORT AND ONSITE STORAGE. THE
PLANT ROOT BALL SHOULD BE PLANTED SO THAT ONE-FOURTH OF THE BALL IS ABOVE FINAL GRADE. THE
DIAMETER OF THE PLANTING PIT MUST BE AT LEAST 6 INCHES LARGER THAN THE DIAMETER OF THE PLANTING
BALL. THE PLANT SHOULD BE SET AND KEPT STRAIGHT DURING THE ENTIRE PLANTING PROCESS. THE GROUND
BED COVER SHOULD BE THOROUGHLY WATERED AFTER INSTALLATION.
THE MINIMUM DIAMETER OF TREES TO BE PLANTED IS ONE INCH,
WOODY VEGETATION SHOULD NOT BE PLANTED AT INFLOW LOCATIONS.
TREES MUST BE BRACED USING 2 x 2 INCH STAKES ONLY AS NECESSARY AND FOR THE FIRST GROWING SEASON
ONLY. STAKES MUST BE EQUALLY SPACED ON THE OUTSIDE OF THE ROOT BALL
GRASSES AND LEGUME SEED SHOULD BE DRILLED INTO THE SOIL TO A DEPTH OF AT LEAST 1 INCH.
SPECIES LAYOUT SHOULD GENERALLY BE RANDOM AND NATURAL.
TABLE OF PLANT HEIGHT AND SIZE AT INITIAL PLANTING
Plant Type
Required Minimum
Proposed Plants
Height/size of
Category
Height/size of Plants
(Lint all plant types
Proposed Plantings
at Initial Planting
within each category)
at Initial Planting
Small Shrubs
18" high in 3-gallon
SOUTHERN
3 GALLON / 18` HIGH
container*
WAX MYRTLE
Small Shrubs
18" high in 3-gallon
SPICE BUSH
3 GALLON / 18' HIGH
container+
Small Shrubs
18' high in 3-gallon
WINTERBERRY
3 GALLON / 18' HIGH
container*
Trees
5'-7' high with 1.0" caliper
6- AMERICAN HOLLY
5' - 7' with 1.0" Caliper
Trees
5'-7' high with 1.0" caliper
7= RED MAPLE
5' - 7' with 1.0' Caliper
Trees
5'-7' high with 1.0" caliper
16= RIVER BIRCH
5' - 7' with 1.0" caliper
QUANTITY:
PLANT 34-84 STEMS IN BIORETENTION AREA BASIN. (400-1000 STEMS PER BIORETENTION AREA
ACRES). (NOTE: 1 TREE=3 SHRUBS)
SOD SIDE -SLOPES OF BIORETENTION AREA WITH NATIVE SOD GRASS.
v�
SEEDING SCHEDULE:
SEEDING MIXTURE
SPECIES
TALL FESCUE
80
PENSACOLA BAHIAGRASS 50
SERCEA LESPEDEZA
30
KOBE LESPEDEZA
10
SEEDING DATES
BEST POSSIBLE
EARLY SPRING
2/15-3 20 2/15-4/30
FALL
9/1--9/30 9/1-10/31
SOIL AMENDMENTS
LIMESTONE
3000-5000 LBS/ACRE
FERTIUZER(10-10-10)
1000 LB/ACRE
STRAW MULCH
4000 LB/ACRE
EMULSIFIED ASPHALT TACK 435 GALLON/ACRE
��I]L`L!3&IEQ11;3y
GERMAN MILLET
40
SEEDING DATES
4/15-8/15
SOIL AMENDMENTS
LIMESTONE
2000 LB/ACRE
FERTILIZER(10-10-10)
750 LB ACRE
STRAW MULCH
4000 LB/ACRE
EMULSIFIED ASPHALT TACK 435 GALLON/ACRE
UPSTREAM END
FORM DRAIN
'E DIAMETER
ERFLOW
3/4" EXTERIOR PLYWOOD
BURIED A MINIMUM OF 6'
PLYWOOD INLET PROTECTION FOR
STORM DRAIN UNDER CONSTRUCTION
INLET PROTECTION FOR STORM
DRAIN UNDER CONSTRUCTION
NO SCALE
REMOVE ALL STRING OR
WERE FROM BASE OH SHRUB.
TLE
LAYER OF MULCH
+UCER BERM TO RETAIN WATER.
IGVE TOP 1/3 OF
ILAP FROM BALL
EQ1EOVECFESZEE0BTWICE SIZE
SCARIFY THE ROOT BALL OF ALL CONTAINER GROWN PLANTS.
PLANTING DETAIL -SHRUB
NO SCALE
STANDARD EROSION CONTROL NOTES:
THE CONTRACTOR IS RESPONSIBLE FOR COMPLYING WITH THE NPDES PHASE II
REQUIREMENTS. REQUIREMENTS INCLUDE, BUT NOT LIMITED TO THE FOLLOWING:
1. IMPLEMENT THE APPROVED EROSION AND SEDIMENTATION CONTROL PLAN AND KEEP
A COPY OF THE PLAN ON SITE. DEVIATION FROM THE APPROVED EROSION AND
SEDIMENTATION CONTROL PLAN WILL BE CONSIDERED A VIOLATION OF THE FEDERAL
NPDES GENERAL PERMIT.
2. PREVENT SPILLING OF FUELS, LUBRICANTS, COOLANTS, HYDRAULIC FLUIDS, AND
ANY OTHER PETROLEUM PRODUCTS ONTO THE GROUND OR INTO SURFACE WATERS.
DISPOSE OF SPENT FLUIDS APPROPRIATELY.
3. USE HERBICIDES, PESTICIDES, AND FERTILIZER IN A MANNER CONSISTENT WITH THE
FEDERAL INSECTICIDE, FUNGICIDE AND RODENTICIDE ACT AND IN ACCORDANCE WITH
LABEL RESTRICTIONS.
4. CONTROL MANAGEMENT AND DISPOSAL OF LITTER AND SANITARY WASTE FROM THE SITE
SO THAT NO ADVERSE IMPACT TO WATER QUALITY OCCUR.
5. INSPECT ALL EROSION AND SEDIMENTATION CONTROL FACILITIES EVERY SEVEN
CALENDAR DAYS (TWICE IN SEVEN CALENDAR DAYS FOR STORMWATER DISCHARGE TO
STREAMS ON THE LATEST EPA-APPROVED.303(d) LISn AND WITHIN A 24-HOUR
PERIOD OF ANY STORM EVENT OF MORE THAN 0.5 INCHES OF RAIN IN A 24-HOUR
PERIOD. MAINTAIN A RAIN GAUGE ON SITE AND KEEP RECORD OF THE RAINFALL
AMOUNTS AND DATES.
6. OBSERVE STORMWATER RUNOFF DISCHARGES AND LOOK FOR CLARITY, FLOATING SOLIDS,
SUSPENDED SOLIDS, OIL SHEEN AND OTHER OBVIOUS INDICATORS OF POLLUTION AND
EVALUATE THE EFFECTIVENESS OF THE EROSION AND SEDIMENTATION CONTROL
MEASURES. IF SEDIMENTATION IS LEAVING THE DISTURBED AREA, TAKE IMMEDIATE
ACTION TO CONTROL THE DISCHARGE.
7. KEEP A RECORD OF THE INSPECTIONS. RECORD ANY VISIBLE SEDIMENTATION FOUND
OUTSIDE THE DISTURBED LIMIT AND RECORD MEASURES TAKEN TO CLEAN UP THE
SEDIMENT. MAKE THESE RECORDS AVAILABLE TO THE DIVISION OF WATER QUALITY
OR ITS AUTHORIZED AGENT UPON REQUEST.
B. MAINTAIN EROSION AND SEDIMENT CONTROL MEASURES TO KEEP THE OPERATING
AT OPTIMUM EFFICIENTLY.
(THIS iS NOT A COMPLETE SUMMARY OF THE GENERAL PERMIT CONDITIONS AND
SHOULD NOT BE RELIED UPON THE COMPLIANCE PURPOSES. A COPY OF THE
GENERAL PERMIT CAN BE DOWNLOADED FORM THE DWQ STORMWATER AND
GENERAL PERMITS WEBSITE AT
http://h2o.enr.state.nc.us/su/PDF-Files/SW-General-Permits/NCGOI OOOO.pdf)
GENERAL NOTES:
CONTRACTOR RESPONSIBLE FOR COMPLYING WITH ALL REQUIREMENTS/ CONDITIONS OF ALL
ENCROACHMENTS & PERMITS INCLUDING PROVIDING BONDS/INSURANCE IF REQUIRED.
CONTRACTOR IS RESPONSIBLE FOR COORDINATING REQUIRED INSPECTIONS.
CALL ONE CALL CENTER AT 1-800-632-4949 FOR LOCATIONS OF EXISTING UTILITIES 48 HOURS MINIMUM
PRIOR TO EXCAVATION.
SIDEWALKS ARE TO BE 3000 PSI AT 28 DAYS AIR ENTRAINED CONCRETE. CONCRETE THICKNESS TO BE 4" UNLESS
NOTED OR SHOWN OTHERWISE ON THE PLANS. SCORE SIDEWALK AT 5' ON CENTER OR AS SHOWN ON THE
LANDSCAPE/ARCHITECTURAL PLANS. PROVIDE 1/2' EXPANSION JOINTS AT
30 FT. INTERVALS AND WHEN SIDEWALK EITHER ABUTS A STRUCTURE OR CHANGES SIZES. MINIMUM
TRAVERSE SLOPE TO BE 1/4" SLOPE PER FOOT.
THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL WORK ZONE TRAFFIC CONTROL IN OR ADJACENT TO
NCOOT OR CITY RIGHT-OF-WAY. ALL METHODS SHALL CONFORM TO THE MANUAL ON UNIFORM TRAFFIC
CONTROL DEVICES (MUTCD) AND NCDOT STANDARDS.
ALL PROPOSED SPOT ELEVATIONS ARE ASPHALT / STONE GRADE, OR AS NOTED.
ALL PARKING AND DRIVE AREAS TO BE A MINIMUM 2" SF9.5A ASPHALT OVER 6"
CABC UNLESS NOTED OTHERWISE.
ALL SIDEWALKS ADJACENT TO PARKING AREAS TO BE STANDARD TURN -DOWN
SIDEWALK UNLESS OTHERWISE NOTED.
EXCAVATION AND GRADING PLAN NOTES:
DIMENSIONS ON BUILDINGS ARE FOR GRADING PURPOSES ONLY AND ARE NOT TO BE USED TO LAY --OFF
FOOTINGS. SEE ARCHITECTURAL PLANS.
CONTRACTOR SHALL NOTIFY AND COOPERATE WITH ALL UTILITY COMPANIES OR FIRMS HAVING FACILITIES
ON OR ADJACENT TO THE SITE BEFORE DISTURBING, ALTERING, REMOVING, RELOCATING, ADJUSTING OR
CONNECTING TO SAID FACILITIES. CONTRACTOR SHALL RAISE OR LOWER TOPS OF EXISTING MANHOLES AS
REQUIRED TO MATCH FINISHED GRADES.
ALL AREAS NOT COVERED BY BUILDING OR PAVING TO BE GRASSED, LANDSCAPED OR LEFT NATURAL AS INDICATED.
UNUSABLE EXCAVATED MATERIALS AND ALL WASTE RESULTING FROM CLEARING AND GRUBBING SHALL BE
DISPOSED OF OFF -SITE BY CONTRACTOR, AT AN APPROVED PERMITTED LOCATION.
BEFORE ANY MACHINE WORK IS DONE, CONTRACTOR SHALL STAKE OUT AND MARK ITEMS ESTABLISHED
BY THE .SITE PLAN. CONTROL POINTS SHALL BE PRESERVED AT ALL TIMES DURING THE COURSE OF THE
PROJECT. LACK OF THE PROPER WORKING POINTS AND GRADE STAKES MAY REQUIRE CESSATION OF OPERATIONS
UNTIL SUCH POINTS AND GRADES HAVE BEEN REPLACED TO THE OWNERS SATISFACTION.
REFER TO SOILS REPORT FOR DIRECTIONS ON EARTHWORK AND SUBGRADE PREPARATION, IF AVAILABLE.
STRUCTURAL FILL:
ALL NEWLY PLACED STRUCTURAL FILL OR BACK FILL SHOULD BE COMPACTED TO NOT LESS THAN 957. OF THE
STANDARD PROCTOR MAXIMUM DRY DENSITY EXCEPT IN THE FINAL FOOT BENEATH PAVEMENT STRUCTURES
WHERE THE REQUIREMENT SHOULD BE INCREASED TO 98% OF THE PROCTOR MAXIMUM DRY
DENSITY. IT IS NOT ANTICIPATED THAT EITHER DIFFICULT EXCAVATION OR GROUND WATER WILL BE ENCOUNTERED
FOR CUT DEPTHS UP TO 15 FEET ON THIS SITE. ALTHOUGH THE SOIL APPEARS TO BE WELL SUITED FOR
REUSE AS STRUCTURAL FILL, IT SHOULD BE RECOGNIZED THAT CLAY SOILS ARE SENSITIVE TO MOISTURE:
AND THEREFORE, IT IS RECOMMENDED THAT EARTHWORK BE PERFORMED DURING THE DRIER
MONTHS OF THE YEAR. THE CONTRACTOR SHOULD BE PREPARED TO MOISTURE CONDITION THE SOILS AS
NECESSARY IN ORDER TO IMPROVE THE EFFICIENCY OF THE COMPACTING OPERATIONS AND EFFORTS.
DFFSITE BORROW / TRENCH BORROW:
OFFSITE BORROW MATERIAL PLACED ON SITE SHOULD BE LOW PLASTICITY (PI LESS THAN 25 AND LL LESS THAN 50)
AND SHALL BE FREE OF ORGANIC MATERIAL OR DEBRIS PLACE FILL IN 8 TO 10' LOOSE LIFTS AND COMPACT TO
95% OF THE STANDARD PROCTOR MAXIMUM DRY DENSITY, ASTM D698. THE MOISTURE CONTENT OF THE
SOIL SHOULD BE MAINTAINED WITHIN t 3 PERCENTAGE POINTS OF THE OPTIMUM MOISTURE CONTENT
DETERMINED BY THE SAME TEST. OFF -SITE BORROW MATERIAL TO BE OBTAINED FROM A PERMITTED SOURCE.
EXISTING CONDITIONS:
THE CONTRACTOR SHALL BE RESPONSIBLE FOR REVIEWING ALL EXISTING JOB CONDITIONS. ANY ADVERSE CONDITIONS
AFFECTING WORK SHOWN ON THESE DRAWINGS SHALL BE BROUGHT TO THE ATTENTION OF THE ENGINEER FOR
POSSIBLE CLARIFICATION OR RECONCILIATION.
ADA AND LEGAL DISCLAIMER:
THIS DOCUMENT IS NOT REPRESENTED TO COMPLY WITH ALL REQUIREMENTS CONTAINED IN THE ADA OR OTHER
LAWS. ENGINEERS ARE NOT LICENSED TO INTERPRET LAWS OR GIVE ADVICE CONCERNING LAWS, THE OWNER SHOULD
HAVE THIS DOCUMENT REVIEWED BY HIS ATTORNEY TO DETERMINE LEGAL COMPLIANCE.
CONSTRUCTION SAFETY:
THESE DRAWINGS DO NOT CONTAIN THE REQUIREMENTS FOR JOB SAFETY. ALL PROVISIONS FOR SAFETY
SHALL BE SOLE RESPONSIBILITY OF THE CONTRACTOR..
TO PREVENT BYPASS FLOW, TOP OF STRUCTURE SHOULD BE 6 INCHES
MINIMUM BELOW GROUND ELEVATION ON THE DOWNSLOPE SIDE. OTHERWISE,
CONSTRUCT A TEMPORARY DIKE TO PREVENT BYPASS FLOW. THE DIKE
SHOULD BE COMPACTED AND AT LEAST 6 INCHES HIGHER THAN THE
STRUCTURE AND STABILIZED APPROPRIATELY AS SHOWN.
EXCAVATED INLET PROTECTION MAY BE USED WITH STRUCTURAL INLET
PROTECTION TO PREVENT BYPASS FLOW, IMPROVE TRAP EFFICIENCY,
AND PROVIDE SEDIMENT STORAGE CAPACITY (REFERENCE PRACTICE 6.50.
EXCAVATED DROP INLET PROTECTION).
EXCAVATE FOUNDATION FOR THE BLOCKS ON LEVEL GRADE AT LEAST 2
INCHES BELOW THE TOP OF THE STORM DRAIN.
PLACE BOTTOM ROW OF BLOCKS AGAINST EDGE OF STORM DRAIN. BUTT
BLOCKS FIRMLY AGAINST CONCRETE AND LET BLOCKS EXTENDED AS NECESSARY
AT EDGES. STORM DRAIN PROVIDES LATERAL SUPPORT AND PREVENTS UNDER-
CUTTING. SUPPORT BLOCKS LATERALLY WITH 2X4-INCH WOOD STUBS
THROUGH BLOCK OPENINGS IF NECESSARY. DO NOT USE MORTAR.
COMPACTED DIKE TO PREVENT
HOLES SET FOR �THAN BY-PASS FLOW, 6" HIGHER
DEWATERING OUTLET PROTECTION
SLOPE � � � :'f •'= r'
r-
2:1 SLOPE,
GRAVEL BLANKET
BA RT L ETT
0 0 ENGINEERING & SURVEYING, PC
1906 NASH STREET NORTH TELE: [phone]
AL WILSON, N.C. 27893 FAX: [phone]
EMAIL: inFoObartletteng.corn
20106`1' -
,,tt��" DATE: JULY 2006 SURVEY BY: NA PROJECT:
'Ile,� I 41, 1 SCALE: NO SCALE DRAWN BY: LR 06-264
REVISIONS: STORMWATER COMMENTS 12-5-06 CODE: DKW
DWG FILE, 06264SP
BLOCK & GRAVEL
INLET PROTECTION DETAIL
NO SCALE
DETAILS
COLUMBIA TOWNSHIP
NORTH CAROLINA
TYRRELL COUNTY
ZONE: ?
000pcw
a
CONTRACTORS SHALL VERIFY
AND BE RESPONSIBLE FOR
ALL DIMENSIONS AT JOB.
REVISIONS
DRAWN BY
PROJECT
0 0 4
CHECKED BY
DATE
.SEER
P5
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