SW8030318_APPROVED PLANS_20040722

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
El CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
,q_22�-( D -1 a a
YYYYMMDD

�E
_L
�'L. J1
LEGEND:
EXISTING GRADE
PROPOSED GRADE
+ 49.25'
PROPOSED SPOT ELEVATION
___ -<
SWALE
SILT FENCE
■ ■■� �*
DISTURBED AREA
------------ -------
%I ,
404 WETLANDS
ea
IV
STORMWATER POND #1
FOREBAY #1
FOREBAY #2
POND
TOTAL
ELEVATION
SURFACE AREA
SURFACE AREA SURFACE AREA
SURFACE AREA
43.0
-
83.3
83.3
44.0
-
-
380.9
380.9
45.0
173A
173.1
748.9
1,095.1
47.0
652.2
652.2
1,694.2
2, 998-6
48.0
946.6
946.6
2,624.8
4,518.0
48.5
1,075.3
1,075.3
2,829.8
4,980+4
49.0
1,218.2
1, 218.2
3,039.7
5,476.1
49.5
1,362.4
1,362.4
3,243.9
5,9687
50.0
1,513.6
1,513.6
3,472.2
6,499.4
CATCH BASIN
CH
�BEP US 17
TOTAL PROJECT AREA: 3.43 ACRES
DISTURBED AREA: 3.18 ACRES SITE N
PARKING DATA:
9' X 20' S PACES 97
H/C SPACES 4
TOTAL SPACES 101
NC 179
LU
of
Z
W
SR 1154 S
NC 179
SR 1145
VICINITY.MAP
WS
SR 1146
IP-RAP
S 59° 48' 16" E 250,06'
52.10 1.80'
R 30'
tXISTING PARSONAGI� CATCH BASINS
[TO BE RELOCATED)GRATE: 51.4 5a.�0...
fj.
I INV: 49.4 -
N 52.30'
,I ..... I
% ,s R 4 -+ 51.70' 1 182' 10 HDPE PIPE SD3 ,r-- St
51.60' .: +...... . . . .
1/ 1.80' 52.30' I 51.70' I { -
COP
LLB O CATCH BAST
GRATE:51.0 1 .
INV: 48.2 52 I I : 52.D0`-
I 50.60' ;
P_ '0F 52.5 ' 5 .50' CONSTRUCTION ENTRANC
cz SIDEWALK
p'I 6 52 2.50'
01
I �-- -
20`
PERMANENT POOL Q 48.0 51.90I
'
020' 25' 25'20' ----_---- -- ----- I ;
EXISTI 4G PARKING LOT I
TORAGE POOL @ 49.0 52.50' Existing and proposed roofs to be guttered, and or graded such f
r that runoff from said roof -tops to h6 directed to parking lot. I
B o f ,0 24' -
PROPOSED EXPANSION
+ 52.40' 10' 52.I �2ar'�e - - -.. -- - 'too ,0 \
ai -_
----------------------------------------------
W o 0, F.F.E. 52
° 'r' FORE AY #2 a 52.50'
N N - ! - 1
Z o 1 \EXISTING PARKING LOT4T_ -
INV.46. 1 u1--------`- - -------�-/- - ---- - _ - _ - --- - _jT" 12
1
I 51.s 2_80' 30.5 52 INFI TRATION BASIN #1 w
o w
52 (SEE DETAL) Y I ; J I `�
� I I
Aw E------------� - _� _ -_--_ ___ -<- - __------------�------- �- U
55' - 12" HDPE PIPES 52.20' � N
52, 40' + 52.2Q O 1; � O
= ZI
50.72' 51.22' w '
CATCH BASIN r --- -
GRATE: 50.6 �/ ' v -j ' :Uj
INV:48.4
I 21,- ;w
---- ---------- -- ------ -- ------ ------ _1 52.40' w I I 49
+ 52Q I I
S ' 52,40' . 52.60' C0 I I
50.72' � 00, 5 .6 - I N 1 '
I S EWALK
in 53 00' I 1
i
k I t----------- - I
51.80' a0 A N �E 44' I
PERMANENT
Co
/ I CHECK DAM
PARSONAGE co
N I
o
1 N
1
50 92' 56' I
I 1 I
RATE: 50.6
S 59° 48' 16" E 348.60' INV: 47.5 _ _ _
�.0�00�-�
hod°
�L
R 5
.OND OUTLET I
ORFICE @ 48.OSTRUCTURE lbr3l
10' WIER @ 49.02 S0
A 1�
This drawing is the property of HOUSTON
is not be reproduced in whole or in part wil
HOUSTON and ASSOCIATES, P.A.
5130 1 1 J-1 _41
9o,,'s tia
p
Fp7A� I
S�
`+-51.80' '
EXISTING MOBILE UNITS
EMOVED)
CATCH BASIN + 51.50' co I m I
GRATE: 51.0 52 9r
49.0
I as i EXISTING BUILDING «il
I (Y)1
f !
53.00' 53 0' 65'-8 I ----- ;
------11 - ----__ ;
52.80 S
MOM
IP-RA
I /f 1 WE 49 I U I
-,- � 3.20
- - _ - Wr
N 590 46' 48" W 348.60' - - - - - -- - - - --- - - - - -
+■�,
N 590 46' 48" W 250.03' 7 '
I ^,
ca ;
I x
w
nd ASSOCIATES, P.A.and
oul written permission from
C Copyright 2003
ALL RIGHTS RESERVED
BASIN AREA
IMPERVIOUS AREA
TOTAL
EXISTING
PROPOSED
BASIN
AREA
PARKING
BUILDING
BUILDING
SIDEWALK
TOTAL AREA
1
15,257
839
-
839
2A
28,503
10,053
-
-
10,053
2B
12,W
8,366
-
1,860
668
10,894
2C
13,006
5,182
1,060
3,977
446
10,665
2D
22,909
13,719
1,560
1,856
574
17709
3
24,575
3,921
-
2,144
1496
7,561
4
23,066
-
-
-
-
-
INFILTRATION BASIN #1
ELEVATION SURFACE AREA
49.0 132
50.0 1,367
RECEIVED
MAY 3' 3 2004
DWQ
22 r Ly` �� PROD #
a
0 20,40 60` 80 FT
i■+
N
' i � i I i - ,.It r �� t ( i Is} 1 i 111 , , '. I 1 t ' 1 '3'�'R` •th r� I,� !t! t�
,'� jl `.. , ' 1. ?.! {.. t !r , r. i t !� ��., .!, � � � a t FI I 'sr."1 11`J�s�li, •, r`•�1� ';', f ;.L

POND OUTLET STRUCTURE
1"ORIFICE @ 48.0
STORMWATER POND #1 I �,_L 10' WIER @ 49.0 i'=%2�' X,TO
FOREBAY #1 FOREBAY #2 POND TOTAL A
INFI l.N-"A kS-U-MMARY
ELEVATION SURFACE AREA SURFACE AREA SURFACE AREA SURFACE AREA
STORMWATER POND #1 DATA SUMMARY 43.0 - 83.3 83.3
44.0 - - 380.9 380.9
TOTAL BUILT -UPON AREA (AC.) 0.02
_-
j Total Built -Upon Area(Ac.)............................ 1.3058 45.0 173.1 173.1 748.9 1,095.1
DRAINAGE SW AREA (AC.) 0.35 Total SW Drainage Area (Ac.)......................... 2.8559 47.0 652.2 652.2 1,694.2 2,998.E%
IMPERVIOUS AREA b.5 % Impervious Area.. ........... 45.7 48.0 946.6 946.6 2,624.8 4,518.o RIP_
Computed Runoff from 1 " Rainfall (CF)........... 4,784 48.5 1,075.3 1,075.3 2,829.8 4,980.4
COMPUTED RUNOFF FROM 1" RAINFALL (CF) 127 Provided Storage CF
... 4,997 49.0 1,218.2 1,2182 3,0397 5,476,1 -(
PROVIDED STORAGE (CF) 750 Required Surface Area (SF) ............................ 3,980 49.5 1,362.4 1,362.4 3,243.9 5,968.7
Surface Area of Pond @ Norma! Pool (SF)....... 4,518 50-0 1,513.6 1,513.E 3,472.2 6,499.4 0
SURFACE AREA @ BOTTOM (SF) 132
Surface Area of Pond @ Storage Pool (SF)..... 5,47E
SURFACE AREA @ STORAGE LEVEL (SF) 1,367 SW Storage Depth (Feet) ............................... 1 �6 PERMANENT POOL @ 48.0
Number of Orifices .......................................... 1
SW STORAGE DEPTH {FT} 1.0 Diameter of Orifice (Inch) I
r
TORAGE POOL @ 49.0
APPROX. TIME FOR DRAWDOWN (DAYS) 17.0 Elevation of Orifice Bottom (MSL).................. 48.00 INFILTRATION BASIN #1
BOTTOM OF BASIN (MSL) 49_0 Approx. Time for Drawdown (Days) ................ 3.7 B
Overflow Weir Elev. MSL ELEVATION SURFACE AREA m 38.0
OVERFLOW WEIR ELEV. (MSL) 50.0 10-Year Routed Flowrate (CFS)...................... 11 49.0 132
Flood Pool Elevation @ Q10..... 50.0 1,367
---------------------- ---------------------
49.42 0
a) N FORE AY #2 `t
N
Z
- - - - - - - - - - - - - - - - - - - - - - - - TOP OF BERM ELEV. = 50. �----------------------------------------- ----------------
N.C. 179 60' R/W ELEV.=50.0' :. A __ ---- ------ ----- --
1 r#5 WASHED NOTE:
- _ - - - STONE BASIN STAINLESS STEEL WIRE MESH VEGETATIVE COVER ABOVE PERMANENT POOL SHALL BE BERMUDA GRASS SOD,
MAX. 1 WITH MIN. 311ti STRANDS AND WETLAND SPECIES ARE TO BE PLANTED ON THE 6:1 SHELF THESE SPECIES ARE:
1" SQUARE OPENS. PANTEDERIA CORDATA (PICKERELWEED), JUNCUS EFFUSUS (BOG RUSH),
4 1 R A LUDWUGIA (WATER PRIMROSE).
- - - - -
VEGETATIVE SWALE PLAN VIEW EXISTING 18" CULVERT Sr0MW_ALFR_ n OND #_1-PLN
MESH SHALL BE CUT
- --------------------------------------------------------- :_::: PERMANENT TO FIT IN SIDE TEE
�GAI,Fl:_.1"2
CHECK DAM
5
n M CROSS SECTION VIEW
-12 9 8' 1" SCH. 40 PVC ORIFICE PIPE
4
I ❑► '
25'
PERMANENT
' CHECK DAM PERMANENT POOL
111
ELEV. @ 48.0
I EXISTING PARKING LOT PERMANENT
CHECK DAM
2" x 1" SCH. 40 PVC REDUCING TEE
I LONGITUDINAL SECTION VIEW
2 SECTION VIEW
P ALM A NKNLT CHECK DAM
� ! STORIVIWATER PONDUGRIEL L
NTS
INFILTRATION-BAKNA1 P_LAN
SCALE_X-- = Q OUTLET STRUCTURE
(SEE DETAIL)
SECTION
-C
52
STORMWATER
PON
D #1
52
H RIZONTAL V = 0'
VERTICAL 1" _
50
STO AGE ELEVATION 50.0
50
PERMANENT
CHECK DAM
SOTTO
@ 49.0
48
4" LAYER
OF CLEAN SAN
48
46
46
SECTI
N D-D
52
STORMWA
ER POND #1
52
HORIZON
AL 1" = 20'
VERTI
L 1" = 2'
TORAGE ELEVATION
50.0
50
50
BOTTOM @ 49.0
48 4" LAYER 6F
CLEAN SAN
48
46
46
2 X 4 TREATED LUMBER
SPIKE TO POST WITH
16d H.D.G. NAILS
(TYP.)
SEAL WATER -TIGHT BETWEEN
PIPE AND CATCH BASIN "=
CAST IRON FRAME & GRATE SUITABLE
FOR H2O TRAFFIC LOADING , ------------------ -
VULCAN V-5622 INLET GRATE 4
OR APPROVED EQUAL , - - i 4 X 4 TREATED POST
Id MIN. 4' IN GROUND
Illllllllllllllll� illlllllllll� i (TYP.)
PRECAST CONCRETE SUITABLE '
FOR H-20 TRAFFIC LOADING -' '----'------------ `
B
PT T%T VT v QU C_=E S_UPP_OB.T=AIL
NTS
CAST TRON FRAME & GRATE SUITABLE
FOR H2O TRAF>=1C LOADING
f f f f F
\/4f\/\l1 '\f\f\f4f• \I\f\/\f.
PRECAST
�-CONCRETE TOP
AS REQ'D.
AS REQ'D. AS REQ'D.
RCP UNDER ROADWAY ---SEE PLANS
AND HDPE FOR
NON -TRAFFIC LOAD TOP OF BERM
AREAS
REST OF WIER
5:1 SLOPE
SEE PLANS
FOR PIPE INVERT ERMUDA GRASS SOD
. . . . . . . . ELEVATIONS
"�"-- `' LONGITUDINAL SECTION VIEW
CRUSHED STONE
r:•::•:; :: :=) r:: TOP OF BERM
-----------------
COMPACTED SUBGRADE REST OF WIER
SF,CTIONB-R SECTION A-g
BERMUDA GRASS
rrT%r"Tr A T r Afi!-1TJ a A OTXT rune .gRCTT0M vrFW
SEC
ION A-
52
STORMWATER
POND #1
52
HORIZ
NTAL 1" = 20'
VER
ICAL 1" = 2'
50
50
STORAGE POOL @ 49.0
48
PERMANE
T POOL @ 48.0
48
TOP
FOREBAY
FOREBAY
BERM
AFOREBAY
@ 47.0
46
46
BOTTOM @ 45.0
BOTTOM @ 45.0
44
44
BOTTOM
@ 43.0
42
42
S
CTION
-B
52
STORMWATER
PON
#1
52
H
RIZONTAL 1" =
0'
VERTICAL 1" _
50
50
STORA E POOL @ 49.0
48
PERMA
ENT POOL @ 48.0
48
VEGETATED
SHELF
@ 6:1 SLOPE
FROM 4TO TO
48.0
46
46
44
44
BOTTOM @ 43.0
42
42
(y)
NTS
,SW_-PON # 1 13 LOAD-C,RE_STEU._SPPILLWAY
N
This drawing is the property of HOUSTON and ASSOCIATES, onfro d \ , r� r� f n R
is not be reproduced in whole or in part without written permission horn n I1�11 I���t U,'p��111VI1111111
HOUSTON and ASSOCIATES, P.A. @Copyright2002 t A
ALL RIGHTS RESERVED NOT RELEASED FOR CONSTRUCTION i
.' .'.. �-,- T', .. •. S'ri �l �••'i:+frT '�, 1 �,--iJ T'

­ . I !. , " .. i j . *,; :,-., ;",. I ... : % . , .'. . I I - I . � , " . - I!! '.J _!­ - I I �. ­� . 1, . .1 1 . .. , -.4 , , - 6� , 1.1 917111- ­­. �, I _1. -1,
A. BURY THE TOP END OF THE JUTE STRIPS IN A JUTE A
I TRENCH 4 INCHES OR MORE IN DEPTH.
5. TAMP THE TRENCH FULL OF SOIL SECURE . . .
WITH ROW OF STAPLES, 10 INCH SPACING,
4 INCHES DOWN FROM TRENCH.
EROSION G0_NT_R_0L_NARRATLV_E
t . . .
STONE cc
E. OVERFAL
. .
C. OVERLAP . . . . .
BURY UPPER END OF LOWER
STRIP AS IN "A'AND"B". OVERLAP END
....... ....
. . . . . . . . . . .
. . . . . . . . . . .
. . . . . . . . . .
.. . . . . . . . . . .
CHANNEL SLOP
%I RIP -RAP
A. PROJECT DESCRIPTION
The subject project is located off of NC Hwy. 179 in southeast Brunswick County. The proposed expansion
OF TOP STRIP 4 INCHES AND STAPLE.
. . . . . . . . . . . . . . .
. . . . . . . . OR WIDTH OF
EXIM: . . . -"-AE;C
*.,. PROPOSED STREET,
'. , '. ,
VARIES
of the exist ill- S hallotte Church of C3rod include.,-, proposed building", parking lots, driveways, a gazebo. and a
. . .
: :.:: I ''. . . 0,,
ROADWAY . . . . . . . . . 25 WHICHEVER IS
parsonage.
. . . . . . . . . . . . . . . . . . GREATER
SECTION VIEW
- - . • .. y. _ . - - •
Stormwat er I and # 1 has been desigined to treat most of the project. areas storrnwater runoff. ri'he remaining
D. EROSION STOP - FOLD OF JUTE BURIED IN `c' .,i. .'
EXISTING SLOPE
onions of the �ro ect. area .vill of ilize an infiltration basin for storrnwater treatment. V e et.ative s�� ales
SLIT TRENCH AND TAMPED,
DOUBLE ROW OF STAPLE'
. . . . . . .
asin convev the storinwater runoff into the infiltration b� "he infiltration basin is designed to -A ore at
. . . . . . PLACE STAPLES 1.5
. . . . . . . . TO 6 FEET APART AS
REQUIRED TO KEEP
10'MIN.y
least the volume. n r
mg above e provi( e s orage w v pass e in i ra ton basin over. floe
vegetative wfitter overflow.
PRESSED INTO SOIL.
15,
NOTE: HEIGHT & WIDTH DETERMINED BY
. . . . . . . .
PLAN VIEW
EXISTING TOPOGRAPHY AND
T he subject project drains to the Shaflotte River- The Shallotte River is classified a-, C Sw according to the
51 1. SEDIMENT STORAGE REQUIRED
NCDEM "Classification and Water Standards."
IMCALSTAPLIES
CA
UJ
#6 GAUGE -WRE
NEW CONSTRUCTION
EXISTING ROADWAY
AS WASHED
> STONE
B. SOILS AND TERRAIN
6-
. . . . . . . . . . . . .
.
LU Co
. . . . . . . . . . . . . . . . . .
6"MIN MIN. 2-
The protect area to be disturbed is fairly flat with a ridge near the existing church. The Soil Survey of
FRONT
Brunswick County indicates that t,.N*o very different, soil types exist within the project boundaries. The soil
classification of areas along the southeastern project ]in(, are classified as Baymeade - fine sand. This soil
SECTION VIEW
VIEW
classification is well drained and makes the use of an infiltration basin possible. The soil classification along
F. PRESS ENDS OF JUTE 4 INCHES INTO THE SOIL
AROUND STRUCTURES AND STAPLE SECURELY.
the northwestern property are classified as Murville - mucky fine. sand. This soil classification is very poorly
JJLTE_THA PICEING-S-TAMLIZATLO-NDETAILL
CD-NS-TRILCTIOXENTRANfFt-D-ETAM
Ty 'I CA"HEEK DAM-DFMIL
(trained soils and nearly level.
NTS
NTS
NTS
C. EROSION CONTROL MEASURES
C)
INSTALIATID-M01"MTE THATCHING
S (SFENOTESO.)
The Primary land disturbing activities for this project are related to construction of the buildings-, parking
-IN-SMALES
STEEL OR WOOD POST
12' STAY
SPACING WOVEN WIRE FENCING AS REQ'RD.
lot,,, and construction of storm drainage system. To prevent sediment. losses (0 off -site areas during and
WHERE APPLICABLE
P"A0 (SEENOTE#6.)
following construction, the following measures shall be used: silt, fencing, seasonal grassing, consil ruction
171
SILT FENCE FABRIC
16111 L1.1
entrance, outlet. protection. vegetative swales, aproposed StormwaterPond and, an infiltration basin.8
EXTRA STRENGTH (50 #/11 IN. MIN SYTHETIC POROUS
ABRIC OF NYLON, POLYESTER RENTHYLENEYARNS
(sediment trap during construction).
Jute thatching shall be used in swales where the slope exceeds 0.015 (.1.5%)
MIN. 12112 GA.
INTERMEDIATE Z FILL SLOPE
0
WIRE
--------------
F-1
SPECIFICATION GUIDE
-1 g
C4
I
Q � o
A. Preparing a channel and seeding: Tapr_e:yQnLmeandering, _sloye channel to center to confine low flows tothp channel
I
where thatching will be laid
1. Fertilization - Lime. and fertili7x, as specified in "Seeding Schedule". Disk as needed but do not cultUiark.
GRADE
MIN. COMPACTED FILL OVER SK1Rr
ANCHOR SKIRT WITH MIN 4" LONG
LL WIRE STAPLES 0 12' O.C.
R
3:
A A
•ti
t-
E.ROSJ-O.N-C-ON-T-ROL-GENER.AL-N-0-TES
F4
2. Vegetative Sprigging -Plant grRss sprigs orsimilar material. before the thatching is put down. Spacings for planting
� FOR REPAIR OF SILT FENCE FAILURES,
USE #57 WASHED STONE IN LIEU OF
--t
Z .
�17 px�
Suggested islOx 20inches.
COMPACTED FILL.
construction activities shall be performed in compliance with the Sedimentation Pollution Control Act.
0
may vary. maximum
H
�Z
of 1973-
3. Seeding-, - Splitthe-application. Sow half the seed before placing the thatebing. Plant the remaining half after the
ERIONT-VIEW SIDE
TYP..
a: 0z
M
w°
thatching is laid.
B. Laying the Thatching: The thatching shall be laid an loose soil after all rocks, clods and sticks have been picked up
-VIEW
1. Install sill fences as shown on drawing and at locations necessary to control siltation of adjacent areas.
0
<0
u. 0
o �-
- - - - - - - - - - - - ZZ
0
2. All land disturbing 1,q to he planned and conducted to limit. exposure to the shortest feasible time.
0 E­i
V) U)
F-1
2. Where wood posts are used. they shall be a minimum of 3' In diameter and 6 in length. Posts shall be creosote or
-- W=
3. All const ruction sites and severely eroded areas shall be stabilized by the establishment. of a permanent
0
that would prevent contact with the soil surface..
penlachioropenol treated southern pine.
3. Where sleet posts are used, they shall be 5! In length and be of the sell fastener aVe
of
TREATED 2 X 4 POST & FRAME W
ground cover.
1. Start laying the thatching from the top of the channel and unroll down grade so that one. edge of the strip coincides
4. Woven wire fencing, where required (see Note # 6), shall conform to ASIM Al 16 for class 3 galvanizing. Fabric shall
be a minimum of 32" wide and have a minimum of 6 line wires with 12'slay spacing. The top and bottom wires shall
............
... .•.•.•. . .•.•.•.•.•.
.....................
with the channel center. Lmy a second strip parallel to the first on the other side of the channel and allow a 2 inch
be 10 gauge, and intermediate wires shall be 12-1/2 gauge. Wire fabric shall be fastened to wood posts with riot less
than #9 stapleslong.
4. As soon as all areas are permanently stabilized, all permanent measures have been installed, and final
overlap. If one roll of thatching does not. extend the length of the channel, continue downhill with additional rolls.
5, Filet fabric shall be of nylon, polyester, propylene orethylene yam with minimum strength of 30 lb./lin. in., and a
approval is received by the Erosion Control Engineer. erosion coi)trol temporary measures may be removed
2. Securing the Thatching - Bury the top end of the jute strip in a trench 4 inches or more. deep. Tamp the, trench full of
minimum 85%litteringetticlency. Fabric shall contain ultraviolet Inhibitors and stabilizers,
6. It filter fabric Is used with a strength of 50 lb.AirL In. or greater, and the postspacing (S) does notexceed 6, woven
FLAN IEW.- S-E-CTIOXA--A
and all accumulated sediment in both StoriDwater Pond # 1 and Infiltration 13asin 41 inust be removed.
soil. Reinforce with a row of staples driven through the jute about 10 inches apart. Then staple the overlap in the
wire fencing is not required. Otherwise, woven wire fencing Is required. and post spacing shall not exceed U.
5. Over I be life of the project:,. the Owner shall make periodic inspect ions to evaluate the -success Ill
channel center. These staples should be, 3 to 4 Feet apart.. The outside edges may be stapled similarly at any time
flow into
controlling erosion of soils to off -site areas. If areas are found where erosion is taking place, the Owner shall
after the center has been stapled. Closer slap in g along the sides is rp qu ired where concentrated water may
TT M A L CA DUE L B A S I X. R R-0 T E T LO N
take the necessary measures to remedy the situation.
the channel.
_C_
STAND "TEMR0_RAB_Y_S I LT NCE
NTS
Where one roll of thatching ends and another roll begins, the end of the top strip overlaps the trench where- the upper
-A _.EE
end of the lower strip is buried. Make the overlap at least 4 inches and staple securely.
NTS
3. Erosion Stops - At any point the thatching niny be folded for burying in slit trenches and secured as were the tipper
ends. This checks water flow and erosion that may begin under the matting. It also gives improved tie -down. The
procedure is reconimended on steeper slopes and gentler slopes of sandy soil or areas subject to seepage. Spacings of
stops vary from 25 to 100 feet.
C-OLNS-T R U C_TJ 0 N-S-EqU E N C
4. Diversions - Where diversion terraces outlet into the waterway, the outlet should be protected with thatching used in
C\I
the same manner as in the main channel. The thatching for the outlet is laid first so that thatching in the main
4
channel will overlap the outlet strip.
1. Obtain approval of Erosion Control Plan from NCDENR- Land Quality Section.
to
5. Thatching - Soil Contact - Get contact between thatching and soil by rolling at right angle after laying, stapling and
seeding is complete. P_e.rfad-_cQoit0_s v&c.ital to keep wAter -flow-over-n-at u_nderAhe..0iatcbing.
NOTES:
1. Vigorous stand of permanent grass cover shall be established as soon as possible along. the center line and
banks Where banks cannot be adequately stabilized with vegetation, liner
2. Install construction entrance.
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6. Staples - Hairpin -shaped wire staples: number 8 gauge: 8 and 10 inches long have been used. The. longer staples are
used in loose or wet -,oil. Wire staples are better than wooden pegs because the staples can be driven flush with the
of channel. an artificial such as
rip -rap shall be used to protect the banks.
2. Where slope of channel bottom exceeds 1,5%, jute thatching, or other effective channel lining material, as well
FAP-RAP DISSIPATION PAD
3. Install I eniporary silt fencing.
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matting. Wooden pegs. extend above the thatching and may catch trash that diverts water flow out of the thatch
as berimudagrass sod shall be used to protect channel center line to a point 4! on each side of center.
(See "Installation of Jute Thatching in swales.")
4. Clear si(es at proposed and and infiltration basin locations mid begin construction of the pond and
to
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OD
protected channel. Wooden pegs niny also set. up a damaging turbulence.
PROPOSIED FLARE
END SECTION
infil(ration basin,
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C. Inspection: After job completion. make sure the thatching is in cont ct with the soil at all places Fond the critical areas
5. Rough -rade roadways and install storm drainage system and veget-allive swales.
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-stapled down.
are securely•
-vaier.
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MAX
6, Install seNver. and other utrilitles.
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7, Within days following final
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5
PLAN VIEW
thirty grading activities:seed and mulch disturbed areas which will not be built
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SMED-ING-S-CEUMULE
upon.
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be
MEDIUM STONE DIA. - 5"
8. Maintain temporary erosion control measures until pernianent ground Cover IS established.
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1, All disturbed areas due to construction and any severely eroded areas shall
MAXSTONEDIA-W
stabilized by the establishment of a permanent grass cover. The seed species shall be
TYPJfA1_V_EGFACATJV_&SWALE
MINH SLOPE 0% FL?
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9. Obtain vertificate of compliance through and on -site inspection by NCDENR Erosion Control Engineer,�
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selected based on the type soil present, Seasonal conditions and other considerations. As
NTS
. . . . . . . . . . .
Contact person is Mr. I)aii Sams. 910-39.5-3900-
an alternative, the contractor may use the methods and schedules shown below; however,
UNDERLAYSTONE APRON THICKNESSJ
WITH FILTER CLOTH
10. Remove temporary erosion control measures and stabilize these areas immediately. All accumulated
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it is -recommended that a specialist be consulted with attention given to site specific
SECTION VIEW
sediment in 1)oth Stormwater Pond #1 and Infiltration l3asin #1 must be removed. Permanent erosion control
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conditions.
measures shall remain,
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a. Cultivate area to a depth of 5 inches
NTS 0U_TLET_P_R0_TECXL0_N_DE_TA1L
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b. Apply agricultural lime at the. rate of 4000 lbs. per acre
c, Apply 10-20-20 commercial fertilizer at the rate of 500 lbs. per acre.
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d. Sow grass seeds at the following rates:
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KindRate.-BerAme,
Common Bermuda Grass unhulled 25 lbs,
hulled 12 lbs.
Pensacola Bahiagrass 50 lbs.
Korean Lespedeza 25 lbs.
Tall Fescue 30 Is.
e. Mulch with straw at the rate of 3250 to 4350 lbs. per acre.
f. Anchor straw with asphalt emulsion tack coat applied at the rate of 300 gallons per
acre.
2. Where it is not possible to establish a permanent grass cover in a reasonably short
period of time due to seasonal considerations, a temporary grass cover shall be
established. The temporary cover shall include the planting of annual grasses or small
grains such as rye grass. Temporary covers shall not eliminate the requirement for
permanent grass cover. Where the season or other conditions are not suitable for growing
a temporary erosion resistant cover, mulch may be applied; however, mulch used alone
shall be for the shortest time practical. A temporary or permanent vegetative cover shall
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be established as soon as conditions are favorable.
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3. Topsoil shall be used over unfavorable soil conditions for successffil establishment of
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vegetative cover.
This drawing is the property of HOUSTON and ASSOCIATES,P.A.and (D
NOT RELEASED FOR CONSTRUCTION is not be reproduced in whole or in part Without written permission from
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4. Irrigate as necessary to optimize plant growth.
HOUSTON and ASSOCIATES, P.A. Copyri ht '0003
AL RIGHT? RESERVED
T ES ERVED
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J-11,