SW8960124_Approved Plans_19990901

FAIRWAY #g (MAPLES COURSE)
S 420 15' 52" E 47.36'
�E S VICINITY MAP
_
SCALE: 1 Inch 1 Mile
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PL JUL 3 01999
D
PRoj #
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\ A 0.2100 a c .
C 0.3622 ac.
SCALE: 1 "=40'
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FAIRWAY NO. 9 MAPLES COU,R,..S.E--,- .. ........
.... .......... . ...
ly
'37
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..........
00
00 /
00
1-040 00 00 00 go
. ..... ......
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... ..... ... ..
1 17- rN 17- K 1 r-\
34
EXISTING TOPO CONTOUR
EXISTING WATERLINE
PROPOSED WATERLINE
S EXISTING PRESSURE SEWERLINE
PROPOSED STORM DRAIN & CATCH BASIN
TOP OF PAVEMENT SPOT ELEVATION
...... .... ......
STORMWATER DATA TABLE
Phase 1
Phase 2
Built -Upon Area.:
Built -Upon Area:
Buildings
0.64 ac. Buildings
0.48 ac.
Streets
0.83 ac. Streets
0.731 ac.
Parking/SW
0.23 ac. Sidewalk
0.161 ac.
Amenity Area
0.31 ac. Amenity Area
0.00 ac.
Total BUA:
2.01 ac. Total BUA:
1.37 ac.
NOTE: mr
ALL ROOF DRAINAGE SHALL
Area Within Phase 1:
3.74 ac. Area Within Phase 2:
3.07 ac.
BE TIED INTO STORM DRAINAGE SYSTEM.
% Impervious Area: 53.7 % % Impervious Area: 44.6
Total Project % Impervious Area: 36%
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SCALE: 1 '' = 20'
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_Ij �.� i / .NOTE•
/ INFILTRATION BASIN. <
LOCATED IN RECORDI
3083 FLOW.•SPREAQER
.INV. 29.75
' S V
OPEN THROAT INLET-'
THROAT: 30.50
INV. 28.10
/ OVERFLOW BYPASS 30.25
,SEE DETAIL:)
INFILTRATION BASIN
SCALE: 1''=20'
W
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MANHOLE FRAME AN[
COVER CAST IN TOP
OVI
THROAT ELEV.
30.50' H
AS REQ'D,
INVERT OUT
ELEV. 28.10'
kr�iZ%`o'N
4f �.t!'Lrf1.ffM.ilk'rfM.fi�i{f'h�f'4.fr•k'{t^srf �.�lM.jtr'4.fr"�.'rf'kf/4fi�1JJ+fi h.'�.{k�f ^�.f kfl'Lfltrr'hr
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SFCTTON B-B
.0
STORMWATER STORAGE POOL
�,�'" 30.25' MSL
SEAL WATER -TIGHT BETWEEN
PIPE AND CATCH BASIN
VRIIIIIIIIIII
101
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!�------------- 01
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B --*-J
14'-0"
PLAN-V-MW
1" STORAGE 0 3Q.25'
£ 1 3:1
3:1 a E
BOTTOM 0 28.0' 1
CROSS SECTION C--C
SCALI
HORIZONTALS h "=20'
I VERTICAL: 1'(=2'
TOP OF BERM ® 31.0'
3:1
ECAST CONCRETE TOP
-4 1/2" PEDESTALS
ONCRETE BRICK
CONCRETE POURED AND
ORMED IN PLACE
A
1 " STORAGE 0 30.25'
3:1
BOTTOM @ 28.0'
OSS SHOMON D--
SC E:
HORIZONT : 1"=20'
VERTICAL: 1 "=2'
INFILTRATION BASIN DATA TABLE
Bottom Elevation of Basin
28
MSL
Spillway Elevation
30.25
MSL
Storage Required
4,859
CF
Storage Provided
4,867
a
Berm Elevation
31
MSL
0101
18'-0" = 12'-011— 12'-0"---. 18'-0" ' 0"
MAX. SLOPE
Sidewalk Parking Roadway Roadway Parking Sidewalk 3:1 TIE TO
MIN. SLOPE 1 ao SLOPE 1?/o EXISTING SLOPE /...•/�"" GRADE
TIE TO 6:1
EXISTING MIN. SLOPE
GRADE 3:1
MAX. SLOPE /—COMPACTED SUDORADE TYPICAL CUT SECTION
TYPICAL FILL SECTION 6" ABC
1 1/2" 1-2 BITUMINOUS CONCRETE
NTS
VEGETATIVE FILTER OF VIGOROUS
j� STAND OF BERMUDAGRASS
1 1-011
.--12" HDPE CUT IN HALF
�;F[l1FlED S1 tSNE 29.75
FLU T ETATLS
NTS
0
ELEV. OF TOP
OF CURB
FLOW LOP •
LOPL
30.25' --��
E PIPE CONCRETE POURED AND AS REQ'D. -
FORMED IN PLACE (3 MIN') R3 R3
p
1 1 /2" 1-2
TABC OR
PRECAST CONCRETE 9" STBC
'"• ••
1.1 3" MIN..;
F^ — tT w_•r_t
=+
k'•� ' -0"
CRUSHED STONE
:; }:.; .• ' NOTES.
•, $%ti�rr s-�•cz,�,ti�,x 4r�•tc�t .a �x�sra ����r,�r�� � �t�r��'x�°kc? 1. CONCRETE SHALL BE 3,000 P.S.I.
krf,1.rf��f�f�,.,ylf�d�.,yAf�r+fkfl..kfflf�lfk0fL� fk,•fl.�If�.Ff,ti.?r�fJ�..,tff.k0�0�'ff kfr'rrL• k'� 2. CONTRACTION JOINTS SHALL BE SPACED AT 10' INTERVALS.
�r� rLL•rs rL•-•r.ra•'+rL•'•r LkrL�rL•L rL�'•r LL•rLk rLL•rL�rt•••rLy't'rLkr••S'r LL•JLL•r L•••J4L•ri rLkr•
ACTED SUBGRADE (A 15' SPACING WILL BE ALLOWED WHEN A MACHINE IS USED.)
COMPACTED
3. FINSH ALL CONCRETE WITH CURING COMPOUND.
1 Arlo
S _ CAI__UT 1B_&_GU=_ T.ML
OVERFLOW / BYPASS STRUCTURE NTS
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SEAL WATER -TIGHT BETWEEN
PIPE AND CATCH BASIN W ^ 1
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PRECAST CONCRETE SUITABLE �,,,.,�tpj
FOR H-20 TRAFFIC LOADING —" - - - - - - - - - - - -' Q+ cd 0-
P_L.AL`LVl[.1CW 0
NE RATE
OR APPROVED EQUAL
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a E­4
AS REQ'D. RCP UNDER ROADWAY AS REQ'D.
ND HDPE FOR
ON -TRAFFIC LOAD
AREAS
SEE DATA TABLE H z
FOR PIPE INVERT 0
. . . . . . . ELEVATIONS . ' . ry► �E1
E-+ H
[;: ;,:.;,;.i F:: ti• CRUSHED STONE
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ccCOMPACTEDSUBGRADE
TC_ALC�T� BASIN
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A. BURY THE TOP END OF THE MUTE STRIPS IN A iv
TRENCH 4 INCHES OR MORE IN DEPTH.' "
B. TAMP THE TRENCH FULL OF SOIL. SECURE
WITH ROW OF STAPLES, 10 INCH SPACING,
4 INCHES DOWN FROM TRENCH, i ': f'•�, � ''^jj�/� � • ,J: }-} 1//Z �. .
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:�h}xti 15�r
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C. OVERLAP - BURY UPPER END OF LOWER E. OVERFALLe'
STRIP AS IN "A" AND "B" OVERLAP END :
TOP STRIP 4 INCHES AND STAPLE.
OF �•�
D. EROSION STOP' - FOLD OF JUTE BURIED IN �; . ,i
SLIT TRENCH AND TAMPED, -
DOUBLE ROW OF STAPLE- ` ti . .� . .:...: h}.:.h:...... .::. r.{::h•r:...:::
�' :- '.:. PLACE STAPLES 1.5
,r '' ' TO 6 FEET APART AS
J5 X, .� xx� (,j�(y}�' 'Sth •:S'L,h}.%'JS{ :L % 'xxx.% REQUIRED TO KEEP
h..h �e - THE JUTE FIRMLY
.�
' {`' • ` PRESSED INTO SOIL.
}�/�{J•,. y�}..�"�:. f1. _ ,lj •: fit' � •' .�'{ �x r
.:♦• �j•-• Y•.Y �Y�Yrr.. +L'1 �---.• . , . h�:.-..:•�,f.{f.h•{V
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#6 GAUGE WIRE
• , ' L};X-k h:;Y%�:•:i,,%;•,�{�hrh''�h}. % �• hh_7{ . ' � .
• - - .;.J}M�.,'�,•}}j�'� J: Fr.,;} •�.,r1•-.•%l •. J:' fff� rr. - +.r T^•'� - .
F. PRESS ENDS OF JUTE 4 INCHES INTO THE SOIL
AROUND STRUCTURES AND STAPLE SECURELY.
NT
NATHERE APPLICABLE
Jute thatching shall be used in swales where the slope exceeds 0.015 (1.5%)
SPECIFICATION GUIDE
A. Preparing a. channel and seeding:T �.r_�v_eXat�.��cl�ran-g,�s��-1 n.X�c�l__D cent�ex to confine low flows t;othe
-
channel where th.atchiiig will be laid
1. Fertilization - Lime and fertilize as specified i.n "Seeding Schedule". Disk as needed but do not; c i i_p,ack.
2. - Vegetative Sprigging - Plant grass sprigs or similar material before the thatching is put clown. Spacings for
planting may vary. Suggested maximum. is 10 x 20 inches.
liii s - S lit flee a :. licat of . Soji) half the seed before placing the thatching. i'lant the remaininghalf after
3. Seee g p - PP
the, thatching is laid-
•; s 'a ;er all rocks, clods and sticks have broil picked
l3. Laying the thatching, the that:chizig shall be loose oil �ft P
up that would prevent contact with the soil surface.
Start o e a from. the tort of the channel and unroll down grade so that one edge of the strip
1. .tart lay inn the thatching,
. Lay ` second strip )arallel to the first on t;lle other dote? oitile'. channel and
coincides with the c,hannc.l center. Lay a I. I
overlap, f o e roll. of thatching does not extend the length of the channel, continue downhill with
allow a. 2 inch _l_ _n g
additional rolls.
2. Securing trlhatchng - Bury t;he t;op end of't:he jut,{� siril? in a ;renc:h inches orrnc7re c1.E;ep. '1'ar?iI� the i;rench
full of soil Reinforce with a row of staples driven through the Jute about 10 inches apart. Then staple the
overlap in the channel center. These staples should be 3 to 1 feet apart.. The outside edges may be. stapled
similarly at any time after the center has been stapled. Closer stapling along the sides is required where
CGI1Cti'niraC>cl ii'atC'-r ii-tLty flC;i,- ailio t-I1e illF%nnfi-
r ,. f 1 o �t t of 4.' •.... si.uc rfnps t1-1v i.r:„,c;li where t;iio
�`��terE;lone roll of t.ha-t:C;liing f'nCla arlcr anot,lleT' ,.£ill �}£:�i-ns, �.il.F £�,i£t .rF t.h£_ .tipl :,€t ep £ t 1 E
upper end of the lower strip is buried. Nlak-e the overlap at least 4 inches and staple securely.
3. Erosion Stops - At any point the thatching may be folded for burying in skit trenches andsecured as were the
upper ends. This checks :eater flow and erosion that niay begin under the matting, It also gives in1proved
tie -down. l lie procecLure is recoiiliiicilclod on steeper slopes acid gentler slopes of sandy' soil or areas subject t.ei
seepage. Spacings of stops vary:* from 25 to 100 feet.
4r Diversions - `Where diversion terraces outlet; into the wafonv ay. the outlet should be protcnted with thnfelling
used the s,r"ne nl.aae m
xlner s in thain clir.rirel. Th t,l;.at;e.li;nt;
In row t,lie outlet is I:ai{1 first, s{; thi-31 tli;:t,{°l;l
i;lle main channel will overlaf) the outlet strip.
5. Tl-zateliing - Soil Contact - Get contact betii�een. tha.tchi.ng and roil by rolling at; right, angle after' laying, stapling
ail el se{ {link i-: cc:imtilete. F?e�i��ct, {'e}1�t„ici1 �� mil.Fit._I«� c�Ji_ � ii,Ei�lr�ti�_ci��lvtZc�f..ta �c c�l�f,i ili tiel n.g.
;. Staples - hairpin -shaped wire. staples, number 8 gauge: 3 and. 1-0 inches long have been used. The linger staples
are used in. loose or wet ,=oi . Wire. staples are better than wooden pegs because the Staples can be. driven flush
With the matting. Wooden pegs e`.t;er2d al?{)vP the thatcilin and play catch ti"ash that diverts water fio�+' DLit of
the thatch protected channel. Wooden. pegs rlay also set up a damaging turbulence.
�_ - Inspection:'' Aft...er jot? ceYp�-?letion. _make sure. the thatching is In contact with the coil at: all plar.PS an(l the critiCrll
areas i.ie' re tix �l s ple_IJ dawn..
SEEDING_SCHEDULE
I. All disturbed areas due to constrUCt.ion and any severely croded areas shall be stabilir ed by the
establishment of a permanent grass cover. The seed species shall be selected based. on the type soil
resent, seasonal. conditions and other considerations. As an alternative, the; contractor may use the
methods and schedules shown below; however, it is recommended that a specialist be consulted with
att:ent.ion liven to site specific conditions.
a. Cultivate aria to a depth of 5 inches
b. Ap♦pliv agric(ul tural li5m1e/- ati the rate o7`f}40¢00 lbs. per acre f y
c. Apply 1 t -' 0-`21 �l i �l t�nlme cial fertilizer S--t the 1 ate of 50,10 Ibs, Per acre
d.Sow Lyrass seeds at the following rates:
,Kind Rate��-c_�
CoiriaTlan Rerrmid<`a. Cirass unh>_Illed 25 lbs.
hulled 12 lbs.
Pentiacola Bahia2rasqti_ s0 lbs_
Korean Lespedeza 25 lbs.
Tall FeSCsac 30 lbs,
e. Mulch with stra,v at, the rate of 32150 to 4350 lbs. per acre.
f. Anc'lIcr str€ w with asplli111. Cnitilsion tat c0sat �apphed al therta(e of :�t.)4 3 �?'<I _clil.
Pel- nacre,
2. Where It is II(At Possible to establish a permanent cover In a reasonabk tillort period of time dLIC tO
seasonal considerations, a temporar;T Lra s cover shall be e stablished. The temporary ;.over shall include
r - f� 1'c.rail�.:=t'�t'y- :c �-et's a3 ll tat-�t liaiinplc- the
the plantiia7, of atinalal or4�ss��s o :sn all oaains sa1��Il ���, arc �t1 ��.
req, irement for perniancnt gra.;ss cover. Where the sca.,on or {:ether conditions a.re not 1ait��ble f;�r �tc�yF'in
a ti 1'YIptA.l-aiy' i'i"t:i it }n resistant cover, mulch tllay be applied-, hoxv ver, nlulc_h used alone shall b liter this
'±ilt iii t. tI.iIIC %radical. -eni oral y or pi rmarlent vCp-ztat ve �ovtcr : ht`lll b 0sta lis-he � �:i� son' �lti
conditions are favorable:.
3. To-o-1so I shall be used. over unfavorable soil conc>litions for successful establislinlent c-ll N7e�ctiatiN7e COVel.
=1. Irrivate as necessary' to opti.mIze plant-rowth.
This drawing is the property of HOUSTON and ASSOCIATES, P.A.and
is not be reproduced in whole or in part ;;without written permission from
HO i4Tt }N and ASSOCIATES, P.A. _-C-Copyr;ght 1939
ALt.. RIGHTS RESERVED
a' -a"
OR WIDTH OF
. ' . . . PROPOSED STREET,
EXI5t N .,
-')-ABC 25'-0 WHICHEVER IS
ROADWAY. -,•••.•••-•• ,
GREATER
15'-0"
PLAN VIENN"
EXISTING ROADWA"
6" MIN.
NEW CONSTRUCTION
SECTION VIENAT
STEEL OR WOOD POST
WOVEN WIRE FENCING AS RE©'RD.
(SEE NOTE # 6.)
SILT FENCE FABRIC
N. 12 1/2 GA.
FILL SLOPE
TERMEDIATE o
IRE '
it
f'3
-
N
3ADE
" MIN. COMPACTED FILL OVER SKIRT`
0
ANCHOR SKIRT WITH MIN 4" LONG
EL 0
MIRE STAPLES n 12" O.C.
*FOR REPAIR OF SILT FENCE FAILURES,
USE #57 WASHED STONE IN LIEU OF
-
COMPACTED FILL.
SJ D V1_ WT
1. Install silt fences as shown on drawing and at locations necessary to control siltation of adjacent areas.
i _ CS n r r
and creosote o
length. 1. € O �tS shall
be C� c0
2. Where ,rood posts are used, they shall be a minimum of 3 in diameter u�€d 6 �n !e g
pentachloropnel treated southern pine.
3. Where steel posts are used, they shall be 5' in length and be of the self fastener angle type-
4. Woven wire fencing, where required (see Note A'6), shall conform to ASTtY9 A116 for class 3 galvanizing. Fabric shall
be a minimum of 32" wide and have a minimum of 6 line wires with 12" stay spacing. The top and bottom wires shall
be 10 gauge, and intermediate wires shall be 12-1/2 gauge. Wire fabric shall be fastened to wood posts with not less
than ##g staples 1 1 /2" long.
r - - -polyester,tpro lone or ethylene yarn with minimum strength of 30 IbAlin. in., and a
o. Fitter fabric shall be �# nylon, • propylene y y .
minimum 85% filtering efficiency. Fabric shall contain ultraviolet inhibitors and stabilizers.
6. If filter fabric is used with a strength of 50 Ib.Ain, in. or greater, and the post spacing (S) does not exceed 6, woven
wire fencing is not required. Otherwise. woven wire fencing is required, and post spacing shall not exceed 8'.
NT
Intentionally left blank
ntentinnall ' left blunt,
O• ELEVATION OF STORMWATER
MW go -
DRUM so a
rig
I
SECTION IE
T
'ING SLI
10' MIN.
5'-1'
#5 WASHED
STONE
FRONT VIEW
RIP -RAP
VARIES
NOTE: HEIGHT & WIDTH DETERMINED BY
EXISTING TOPOGRAPHY AND
SEDIMENT STORAGE REQUIRED
TYPICAL-- CjIE K.-DAA ---DEE-TAIL
NTS
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-TREATED 2 X 4 POST & FRAME
PLANT -VIE -NIT
EXTRA STRENGTH (50 #/1 IN. MIN.) SYNTHETIC POROUS
FABRIC OF NYLON, POLYESTER, OR ETHYLENE YARNS.
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TYPICAL CATCH BASIN_ PROTECTION
ITT
Intentionally left blank
1InIenti0,r.al. lyr Info bra i-1
A. PROJECT DESCRIPTION
The subject pro'ect is located within Sea Trail Plantation) in southwestern Brunswick Count T. The project
�
- • v
is within the 1 own_ vl Sunset Beach L3-ty Ilimit;s and is located off of NC, Hwy 179. The Royal. Post Road
" 1. ins .emitted under Project Number' 9f0121BR, T+,ebruary
.project, consist of two sections, with. Section being permitted � _
12. 1.99F. The subject subznit;t:.al is for clevelytanent of Section 2 which will consists of four multi -family
1 �
i i ss i t, l parking meld roadways, The Section 2 area of
budrizngs with l2 tiXiats per building and. a. zc a _ec 1 � g �
disturbance has been calculated to be 3.0 acres.
The project: bounded to the north and east by the Maples Course Fairway #9, on the south by Club Villas
Phase TTT, and on the west by Clubhouse Road.
tunvffrvm this project enters a designed stvam drainage system to an infiltration. .basin with overflow
traveling .n through a vegetated filter to the Calabash Ri-ver which. is approximately 0.5 miles to the north.
B. OILS AND TERRAIN
The project area to be disturbed. is flat. Relief ranges from. approximately 29' MSL to approximately 34'
MSL. The Soil.Sui evof_11run.$)Nick_Count5_ indicates that the most prominent soils within the project
boundaries are Kureb fine sand and Pactolus fine sand. These soils are excessively to moderately well
drained soils. Surface runoff is slow and permeability is rapid.
C. EROSION CONTROL MEASURES
The primary land disturbing activities for this project are related to grading and. construction of parking
areas, l:nrilciizig� �antl i.it;ilit,ies. To prevent se;lirnexit, losses to off -site areas durizig and following
constructioalthe following measures shall be used: silt fencing, seasonal grassing, construction entrance,
and inlet protection.
1. All construction activities shall_ be performed in compliance with the Sedimentation Pollution Control
Act of 1.973.
2. iVI land (11stur.bing activity is to be planned and conducted to Limit exposure to th-P shortest feasible time.
3, z\11 cons iruct,z"vl sites <nd see ercy eroded areas shall. be s a -dized b t the establishm'ent; o[ a permanent
ground cover.
i l
`n final
•�. �'�s ;;vozz �1s all areas are permanently stabi:l.i.zed, all permanent measures have been installed,, a d a
Tn - n Erosion. i(� - Engineer.
'1" erosion rlcontrol.t. m- poz:ar ' measures may be removed.
al,pro al Es r.ecoli, ed by the Control Enginee e v_ o .e 1 � �
5. Over the lie of the project, the Owner shall ITUlke periodic inspections to evaluate the :success in
controlling erosion f soils to off -site areas. If areas are found cohere erosion is taking dace, the Owner
c a g 1
shall tale the necessary- measures to remedy- the situation.
1. Obtain approval of Erosion Control Plan born NCI)EIINR.- Land Quality Sect -Ion.
2. Install construction entrance.
C;,iacle 1?sirl:ing ar}tia and ii stall st;cir'ni ch<iitl<ige systeti.
zt. Ni lodifv exist.i-ng 1nFiil.r,,anon basln ,is needed-
._lnst:all ilt.11t:ttc";and c'c?Xn ?lE?l:c? {'{?Xi [:r�ict:lOXi c?l ?a.C'l Anse a ea .
1 l
6 Within t.hirt.i7 (kits follovvi.n- final -rading activ:itios seed and mulch clisturbed areas which. will not. be.
built upon,
7. A , intai l temporary erosion. control measures until permanent ground cover is established.
p. Obtain certificate of compliance through and on -rite inspection h-i- NC-D ;HiNR. Erosion Control Engineer.
C'onki(A person is Mr. l),an Seams, 9113 39 '-3'900.
9. .P.emc}tie te.nipmart- orosion control measures and staitii_l.zze} then-e areas immeo iat.elY''..Perniane nt erosicin
control measures shall remani.
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t , a 2. _ ' Mom. SHEET 7 FOR � 25 - EXISTING GRADErn °
"3'3 iE70
`� asa
PROPOSED GRADE a �, `
a
\ .. vBMNG #4_Jd
_ _
t ,
E RGt�'Q D 1 CMP Q. ,s / FLOOD{ - 34 gyp,POOL The 1 age\ m .�
PROPOSED CULVERT
WITH CATCH BASIN I W
c 1
/ 33' M LU
_
/ ,• }29 .. I TRATiQ i BA aiN ' ,�` _ _ '` Section \ � � �; � � W
---�'O��c�' M `\ ''',.�„ � \ \ \ PRITH OPOSED CULVERT BOA �
JJ :sue �.. ® ua
1+
/ `•i.,, '� rF#��`(' � � �
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.#1
'>� SE. \ 1 , s,.a. s; aR# .� 4.�. 32 ... EXISTING CULVERT
WITH- CATCH BASIN sx
79,6
f 1 #?Rt3POSED WATERLINE (TYP)
EXISTING CULVERT
' i f NCE WITH JUNCTION BOX
fAl
34 \ / \ i ! 2 F t \\ �& PROPOSED SPOT ELEVATION
NI
eOf
TOP CURB_
_s.e PROPOSED SPOT ELEVATION AT CURB
I
4 4)
BOTTOM CURB
>-
` r--TOP GRATE
�� BORING N i �
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o
` ...� ...,� . �, , 4 `•. ' �T11 c� PROPOSED CATCH BASIN ELEVATIONS
j CULVER
.,� . -
/ ! `#et\' \ a �� ©k'a )YI_. l INVERT
s ' f:Clt�1 \ f
- x
CULVERT IDENTIFICATION LABEL z
NO 0
N.
CD
32
DATA TABLE
_gel
S
3
I v N. d f ' f �CQ
V a !mod
r,
®�G BEGIN ® ��.. �, e
87
C
` %0 - \ Buildings 0.. 4ac. Buildings Qn a, � �o
J /iy Z o e CURBING
J
0_
-� "` . + 1 `~ _ e , +C. Streets. aid
�-
417,,� �N, a ! ark W 0,2 3 c, Parking/SWCo
rlzo
33.1
Amenity Area .31 ac. Amenity Area d0 Ac.
z:
—_
\ f I. ' e 32 77 A A 1
z 0
3 Imrvio s Area:
11 �se + =31r , r IL
+
e 1
}
333. i 1 6
, % `dotal... 7� Impervious Area* 3 to
`�s e
3.4 3' r y t t' ,Z
MAI
\ I s ♦ . ,� DESIGN 010 INVERTINVERT
\ `♦ - U M
SDI 30 14.40
/6, 23-30
FFE34, 0 0.99
_..
#
low
. _. 8 6,0 2 7.4
i \ N
j '." t' _ ��
SD3 12 1.72 30.10 29.40
v �o„;
— 3a .� 14.43d3a 9d3
co
_Lj
V11 SDI 2 2-2
IN 704,--
I
6 ypy�
cif I i
4 j
�.
\f/
SDI 6
. 7.10
1..,
I on
�' / •,, '+•., ' '`'" � � ``\ TC3i41 DRAIN TO FAST i1i)Eld
1 _ _S02 1 1 d 23.1 23.1
,4G ., 1 4fia LINE. IF PROBLEM ARISES
CONTACT THIS OFFICE."Po ,
ti �XtSDIO 24 23.60 19.3 18.510
'..
71
F,
t
\ t s •..
a:
I -Boring Data Table
0.000,
L`b!P
BORING r 0-52 " White Sand
r
\\2. BORING � - ".,... '�.°,�,,,* / -' S 2-7 2" B r e�'w n t c� T a r� n i s h O range Sand
\\ \ ''`' „� �`\ •� / \ - No Water Present @ 72 * .
o
rn
6:1 SLOPE— -w-'ti., 2 0-72" Light White Sand
No Water Present @ 72"
Q,,
#3 0-18" Grey Sand
18-72" White Sand
R-`""''-.. ♦\ No Water Present @ 72"--'
'
PROPOSED
4 0-10" Brownish Grey Sand
INFII FRATIO 10-72" Tan Sand Becoming I i hter with depth)
IN BA, :a i �`\ No Water resent C 72
BOTTOM OF BA IN
' 23.a' MSL 7 FOR �, 5 0-22" Black Fill - Clumpy
_ \Y �Ftaa�c �3 ,' � INFILTRA�ar# BASIN #t 22-36" White -Grey Sand
25 SYEAR �OR TER � \ � a / � � DETAILS 36-58" Orange Sand
OOL
26.0' MSL 58-72" Tan Yellowish
Sand
,\ No Present @ 72"
6 0-181, Black Fine
3 `
c z
3:1 SLOPE18-48" Grey -White Sand
CULV
48-72" Orange Sand
{ tit t �—_EXi TOBEANo Water Present @ 72"
y
s- pECEtyE
APPROVED
s
NORTH AROMA NVII NO "RENTAL
MANAGEMENT COMMISSION
%/'DIVISION WATER QUALITY
® E 11A
qq
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NOTES: _
1. ALL ROOFTOP DRAINAGE SHALL BE ��
DIRECTED INTO CATCH BASINS.
0 25 50 2pp
n
l
2. PONDING OF WATER ON PARKING AREAS.
DURING A RAINFALL WITH A 10-YEAR _
R Y APPROACH 1' D >*
,. FREQUENCY MAY AP ROAC E�TN.
1 1 ! r V SCALE: 5 O \ ,% ,�� t� 412)
t� ice$ • �1 -(i: �""'-n- Q
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28
26
TOP OF BERM
- @ 31.0'-
30
TOP OF SPILLWAY FLOOD POOL
@2.sO.O'
L
15" C.M_ 3.11
STORAGE
29.5
BOTTOM O� $WALE
;2
8''< BOTTOM ® 28.5
8
CROSS SECTION C—C
SCALE:
HORIZONTAL 1 "-20'
VERTICAL: 1 ' = 2'
{
26
25 YEAR STORMWX
STORAGE POOL
26.0' MSL
/
V`y
`O
-1— - -- — IL""'Ar"TO-) N-
SE: 1 "f 20'
\
-
i
BOTTOM OF BASIN -
28.5' MSL -
,\
r 50' Flaw. SPREADER�
- _ v
V� ` aQ �TATIVE FiLTE�
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BORING #4
FLOOD POOL
O' MSL
l
1 "z?� J .. .
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290 f����\ ,.�.;�_-�._�_w_.; ,� ���'
STORMi�IATER STORAGE POOL1 29.5 MSL
r 291-
j
Al
TOP OF BERM
31 ' MSL
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All
0
BORING #5
FIT
-INFILT7-"%A'g 10-IN-BASIN
21.4
SCALE. 1 "=20'
Storage Required
2,220
Storage Provided
2,300
CF
Berm Elevation
31
MSL
Storage Elevation
2 5
MSL 2, 3
INFILTRATION SIN #1
Bottom Elevation of Basin
22.5-23,0
fASL 677F5
Storage Required
2 8 0 0
CF
Storage Provided
29000
Betm Elevation
27
MSL
Storage E lev t llon
26.0
N SL �5 5F
TOP ELEV. 23.O'\,
2.s$ L
TREATED 22
4"INA DRANNU
"'
FRAME SAND GRACE SHALL BE ATTACHED To BASIN
CAST IRON
FRAME & GRATE
PRECAST CONCRETE
i
44
2
'ake" a °ieE#a+�eg� * �s*s+�3r*s4'�saaix� °vir*r+'6ri,r,r'ia*�#�ark��s
�s*+a�``a�«�a s�'}`*s*�«�"`��a�!��a"ea�*�*s�u$s�i a .*.�'*• ��!!
* x • +�,� #�e+�#ram*+�s*wty+t �a'4�"two"SHt'tree.+'�r*�sa'�t�*ir�s*a�"rrs
*�"`�`•«°**•ad"n+r*�a�"*�+�+P�`*gar'*�`�y�"`��i'*s**4�'+�,�'�+��+�**a� �*s�+�
SECLION A -A
bX
ct ' 19
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NTH
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TREATED 2X 10
er)
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0
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NTS
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GRAVEL FILTER
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PLACE 1 COURSES OF
n.
BLOCKAROUND INLET
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,#�atl.�Y.; y�►�,g � ..��"'1 �,. u' � �''`P�{ •' `$ri�4ffi"ilea a`. .:
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SECTION VIEW
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D E C El t V E
iTS
MAY 171996
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PROD #.._.) b c Lz
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20 40
NOTE: EXISTING GRADES SHALL BE MAINTAINED AS BOTTOM OF THE INFILTRATION BASIN
6" MIN. 20'
(TYP. 1/4" PER FOOT1 1/2 . "1-2 PAVEMEN6" ASC BASE
ROADWAY SECTION
NTS
C11
U
0
U
-SECTION D-D
TREATED 2 X 4 POST & FRAME
PLAN VIEW
EXISTING ROADWI
6" MIN.
L-OU#
11M.
•
SBEd VIN('T' SCHEDULE
1. All disturbed areas due to construction andany severely eroded areas shall be stabilized by the
establishment of a permanent grass cover. The seed species shall be selected based on the type
soil present, seasonal conditions and other considerations. As an alternative, the contractor
I
maN' LISC UIC 17nethods and schedules shown below; however, it is recommended that a specialist
be consulted with attention given to site specific conditions.
a. Cultivate area to a depth of 5 inches
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
d. Sow grass seeds at the following rates:
Kind Rate Per Acre
Common Bermuda Grass
unhUlled 5 lbs,
hulled 12 lbs.
Pensacola Bahiagrass 50 lbs.
Korean Lespedeza 25 lbs.
Tall Fescue 30 lbs.
e. Mulch with straw at the rate of 3250 to 4350 lbs. pi;r acre.
f. Anchor straw with asphalt emulsion tack coat applied at the rate of 300 gallons per
Z�5
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 be established as soon as conditions are
favorable.
3. Topsoil shall be used over unfavorable soil conditions for successful establishment of
vegetative cover.
S (SEE NOTE a 6.)
STEEL OR WOOD POST
12- STAY,
!.SPACING WOVEN WIRE FENCING AS REQ'RD.
(SEE NOTE # 6.)
EXTRA STRENGTH (50 #/1 IN. MIN.) SYNTHETIC POROUS
FABRIC OF NYLON, POLYESTER, OR ETHYLENE YARNS,
MIN. 10 GA. ---
LINE WIRES
Z
Z
0
<
LL 0
Z
LU C'4
X
UJ
25' OR WIDTH OF
PROPOSED STREET,
WHICHEVER IS
GREATER
NEW CONSTRUCTION
771�� 12" MIN.
4TYPICAL
I'X
Jill
4
1 T r,
-Z
SILT FENCE FABRIC
111 12 1/2 GA,
INTERMEDIATE
FILL SLOPE
R!
C1,11
CARADE
_6" MIN. COMPACTED FILL OVER SKIRT-
UJ 10
UWJ 11 UO
Z�- -
ANC HOR SKIRT WITH MIN 4" LONG
WIRE STAPLES @ 12' O.C.
-*FOR REPAIR OF SILT FENCE FAILURES
ZN 'c)
USE 957 WASHED STONE IN LIEU OF
2 COMPACTED FILL.
FRONT VIEW SIDE VIEW
-v
2. Where wood posts are used, they shall be a minimum of 3' in diameter and 6' in length. Posts shall be creosote or
pentachloropenol treated southern pine.
3. Where steel posts are used, they shall be 5' in length and be I the self fastener angle type
Mote oM Al 16 for class 3 galvanizing. Fabric shall
4. Woven wire fencing, where required (see N e#6),shal1co.nf._rm to AST
-2' vote and have a m'nimum of 6 1ne III with 12- stay spacing. The top and bottom wires shall
be a minimum of te -i
ge. 1,II fatric shall be fastened to wood posts wi't, less -e 10 gauge. ant i1n. rmediate wires stall be 12- 112 gau t
t'an #1 S!a-_'-ss 1
e f4Ft av
77­nin;m..venv�; etc atncs'� --
nc
6, It falter fabnc is useal wit a St7ii oti 5-0, I. n, ��7 g--aa`-er, annj- the Post s a (S) does no,, E--, woven
wire fencing is not required. Otherwise, woven wire is requi-el, and, post spacing shall not exceed 8'.
STANDARD TEMPORARY SILT FENCE
NTS
NOTE: ALL INLET GRATES SHALL HAVE A MINIMUM
PERIMETER OF 1.7 FEET AND A MINIMUM OPENING
AREA OFO.94SQUARE FEET.
PLAN VIEW
CAST IRON
MORTAR BED
FRAME & GRATE\
/ALL AROUND
%V;, NV;
N
%
3#
34
6
PRECAST CONCRETE
b
Lu
cc
W
CTED GRAVEL OR STONE e:••
co
%-',
q
I? K�
SECTION A -A
SECTION B-B
TYPICAL CATCH BASIN
NTS
FINAL DRAWING
NOT RELEASED FOR CONSTRUCTION
A. PROJECT DESCRIPTION
This project is located within Sea Trail Plantation, which is off of NC 179 in southwestern
Brunswick County, adjacent to the Town of Sunset Beach. This project consists of two phases and two
sections. Phase 1 consists of full development of Section 1 and a roadway and parking through Section
2. Section 1 will have 4 multi -family buildings with 12 living units in each building. In addition, there will be
an amenity area with indoor and outdoor swimming pools and a meeting room. The total projected
disturbed area is 3.0 acres.
The project area is primarily made up of a driving range for the Maples Golf Course. Runoff from
Section 1 of the project area drains to the Atlantic Intracoastal Waterway via Jinks Creek. Runoff from
See-tion 2 of the project area drains to Calabash River Creek.
B. SOILS AND TERRAIN
The project site has a natural knoll at the Section Boundary in which the terrain gently slopes
runswick Counly ir-ific--s t'ial the nnos' proniinent soils
toward, The of E,
within the project boundaries are Kureb fine sand and Pactolus fine sand. Theses soils are excessively to
moderately well drained and surface runoff is slow due rapid permeability.
C. ADJACENT PROPERTY
The project is within the Sea Trail Plantation Development, The Village on Royal Post Road is
bounded on the north and east by Maples Course Fairway #9, on the south by Club Villas Phase Ill and on
the west by Clubhouse Road.
D. EROSION CONTROL MEASURES
The primary land disturbing activities for this project will be the grading of the proposed tract and
the construction of the amenity area, buildings and parking area. Erosion control measures consist of a
construction entrance, inlet protection, outlet protection and silt fencing. Areas not covered by
impervious surface will be permanently grassed.
I M11
1 - All construction activities shall be performed in compliance with the Sedimentation
Pollution Control Act of 1973.
2. All land disturbing activity is to be planned and conducted to limit exposure to the
shortest feasible time.
3 All construction .sites il and severely eroded areas shall be stabilized by the
establishment of a permanent ground cover.
4. As soon as all areas are permanently stabilized, all permanent measures have been
installed and final approval is received by the Erosion Control Engineer, the temporary
measures may be removed.
5. Over the life of the project, the Owner shall make periodic inspections to evaluate
the success in controlling erosion of soils to off -site areas. If areas are found where
erosion is taking place, the Owner shall take necessary measures to remedy the situation.
CONSTRUCTION SEQUENCE
-1. Obtain approval of Erosion Control Plan from NCDEHNR-Land Quality Section.
2. Install and cap culvert and install construction entrance at Clubhouse Road.
3. Install silt fence as shown on plans.
4. Clear and grub the locations for buildings and parking. Grade site as shown on
plans.
5. Install catch basins, storm drains and infiltration basin.
6. Finish parking, place base material and pavement.
7. Construct amenity area and buildings.
6. Within thirty days following final construction activities, seed and mulch disturbed
areas which will not be built upon.
7. -Maintain temporary erosion control measures until permanent ground cover is
established,
8. Obtain certificate of compliance through an on -site inspection by NCDEHNR
Erosion Control Engineer. Contact person is Mr. Dan Sams, 910-395-3900.
9. Remove temporary erosion control measures and stabilize these areas immediately.
Permanent erosion control measures shall remain.
NOTES:
1. Vigorous stand of permanent grass cover shall be established as soon as possible along the center line and
banks of channel. Where banks cannot be adequately stabilized with vegetation, an artificial liner 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, shall
be used to protect channel center line and banks.
TYPICAL VEGETATIVE SWALE
NTS
to