SW5230802_Plansheet - Grading/Drainage Plan_20231222

DRY DETENTION BASIN OULET DETAILS
Cap to Prevent Trash/Debris
from Clogging Riser
Top of Berm El.617.00 CYD
_25-Year(616.04')_• \2 III w �
10=Year�61 s.6�__7_•_______ ����, �g 14-YEAR,24-HR RAIN EVENT CALCULATIONS P�
8" Dia. PVC Riser- - '-----
Invert El. 615.00' - - - - - - - PRE-DEV POST-DEV PREFFV POST-DEV rl
_ _ _2-_Year(614_45') _ _ - - - - - PI AC 5)OW PECFS)LOW RU(AC FV)L. RU(OIFnOL.
3" PVC DIn ertoEl. 612100' - - II- - - NOTE:DRAINAGE AREA MAPS AND CALCULATIONS PROVIDED Z
_ WITH STORMWATER EVALUATION NARRATIVE. w ✓
4" Perforated CPP to - _ w
Prevent Clogging of i ___ _ _____ 4
Drawdown Orifice - - - - - -__- - - - - _ �
- - I IE-1 - - - - -
�A
Base El. 612.00' 6 Invert El.612.00 30'Lon 6" Dia. PVC Pie s=0.01 ft/ft �
p Invert El. 611.70 { ,
-I - CYD
1.5'x 1.5' x 1' High Conc. Anti-Flotation Block
SMALL PERMANENT POOL 9 o� J d% ��r = o Q o � ' �
FILLED WITH NO. 57 STONE - < : ¢ rn z : - = U > c"n _
TO REDUCE CLOGGING OF U ' y U) - Q = d ��
THE DRAWDOWN ORIFICE ;o 4=. ; \� > °
0.
PIPE 1. 36" DIA. Off/l! 1 I 1 t��\\ "IIIIIIIIIIII
INV. IN: 629.36
INV. OUT: 629.00 "V" SWALE NO. 1
DISW X CLASS
R: CLASS A RIPRAP HWR T�
9'L X 9'W X CLASS B p:��) - - - - - - - -
_ TRAPAZOIDAL 5' "V"SWALE NO. 1A
- - - - - - EXCELSIOR MA
/ - - - - BOTTOM WIDTH W10 - ' o wv EDGE OF ASPHALT
SWALE NO. 2 ® - �a -, \ :: �wu. :. :::. :.:::.
r / CLASS A RIPRAP / / Slog,' ® RAAEN STREET N p Pam»
;s....................... O
/ I
/ `' :'' ''' C FORMERLY NINTH STREET P.B. 27, PC 19
EXISTING0'PRIVATE EASEMEN,' `Q� 138.23' 7. ?P.'QF'/f?Pfi!'': o
Zoned R10 I // P.S 95-219 I 3 '\"%RZVA•T/QAI=''636.A9`(NA N788) Z
EIP
277.80' TOT,4L ° o le7
N 880146" E--- \ .\ �\ > - - - - \ ® :�: Zoned R10
�® \� V SWALE NO. 4
EIP _ ® - ® SEED & MULCH z
�\ `\ �E?P �'__ w \� ® \ \ \ HP .10'ABOVE STREET ELEVATION pe EACH DRIVE. /
` ` /�
fps EIP \ \ 6?s` \ �\ \, 8 \ \\ \ / ,•. \ I \\ \ \ -
� � � FORT/NO ARELLANO OCAMPO
I P/LAR OCAMPO ems\ ` 6?]\ \\ \`--� --6 3 1 '/ -i / \
ROW Set ack(�ARIE$) _ i �22� \ ' \ + :.3cr \ :::::. 21
i
\� i W \ \ L3 ' \ ` ? 37x N as 5,a Pa 55z \ / QI
L " " P.&27.Pa 18 `J
N� \ � `� `\ \ � - � `\ - �' -� ® / �� ` \\ ` y, \ :•:: � � 12 X12 INLET(TYP)
� `� \ `� \\ `\ `� ` `\ a, 24" :.:::::: ::::: PARCEL 64747
\\ \ \ \ \ --sea- < l 33 h ° • >.:: : :. \ 4" SDR 35 OR J
EIP ��\ \\ 24 cum I \\ `�- \ `\� `\ `--��-•� `y. FF 6 :-sw6 :::. SMOOTHBORE PIPE / Q
\ 6 MIN. COVER (TYP) / Zoned R10 'ti ^ • a z
I X 20Cum-Twin \\\ � \\ _ G/STAGING so oar \ \ :..... -
\ AREA FOR PHASE 3 \ \ 33 \ \ TOP OF IRON PIPE
\ `\ F 632 \ :. £LEVA 770N= 634.14'(NAVD88)/ m Q
_C' \.' " \ \, El) CLEANOUT(TYP) Lr-
PIPE 2. 36" DIA. �` \ S�2 G� 66 �+
LEGEND: EIP \� \` \\ 1BCum-jai `� �_���, INV. IN: 624.12 \\ Q�P \ �' \ 631' �\ \ '\� "V" SWALE NO. 5 CIO
w
\ \ \ \ `� FF : s:3 :: :. SEED & MULCH
\ \\ \ \ \\ INV. OUT: J \ \\ \ s L- - -s3 , / O
/\ /
DISSIPATOR: 625---- � \� \ \\ \� \\ \\ ` \
- 9'L X 9'W X CLASS B -- 2s oak �( \ ` \� ` OQ \. 630.
�7 \ \ 20'aac-Twin \ _ _-624-__ _ \ �j1, -- 1.00 •:-{6'✓. ::�:. \ Z
EXISTING �O. A V `� `� A \ �/ T& S INVESTORS, LLC O
„V"SWALE NO. 3 \\X�\ ' \ \ I \ _ N; �1 06,572Pa6W /
\ \ ,6 �__ \ �__ ENKAMAT 7010 \ \ \ \ \ _
3 280 SF EXISTING IMPERVIOUS \ �0 -� \ --- - --_ \` ` ,/ `: : : ,: �2z / P.A27,Pa78 z ��ti
\ I \ \ 0 QO ,6 PARCEL 63465 U)
�\ \ 1B Obk 626.00 \ �j2• \� _8 /
6,384 SF NEW IMPERVIOUS DRIVE AND WALKS \ 6 X 10 SMOOTHBORE PE rs ab \ \ _ " SEED AND MULCH ALL w -
�\ \ \ PIPE @ .5% MIN. 2SHOWN51
DISTURBED AREAS
�ow j4 \� \\ (TYP) L �R\ \ \\\ 63Q66 / �� _ W
\ Q
F-1 12,672 SF NEW IMPERVIOUS ROOF ` \ --__ -_-_ \ __
s \ ��6 _,�_-62 : •�°'•:.: \ Zoned R10 ` � LJJ z
�" \\ `.6, '_\ 2 ` LIMITS OF _�__ f♦ \ , \ m� � \ •( /
EIP \\ '�\ \\ �� ------�\ DISTURBANCE \ \\\ �` ��\ �� \ G��s Q =
7,062 SF NEW PARKING ) ' \ `� �` 2 - ;�- s2 ..... :.
V v<INauuES AGAIN EASEMENT) vv a�,� v O� FF 6 �, "V"SWALE NO. 6 LL
>c\ ® SEED & MULCH Q =
�o `\ \\ \\ CLASS B EROSIONS` ® "V"SWALE NO. 4A �� �I \ \ _ _ `:.• = z
F-1 2,465 SF NEW GRAVEL WALK j ` ` ` --- / ` rt� 27
o_ -
\ \ CONTROL STONE EXCELSIOR MAT U
6'` \` \\ \ \ (EXTEND 4' PAST6`L3' o.
BOTTOM OF SLOPE) / USE DISIPATOR �`� \ FF \\ ® '\�/`
NOTES AND CALCULATIONS. EIP \\ \\ �� \ SHOWN ON SHEET 9
FOR ALL 4" &6" PIPES
\60 PAULA cERVA TEs LACUNAS
1 . ±135 907 SF SITE TOTAL `
.............
LLJ
.............
l �` ���� �\ „V"SWALE 2>j s' -- :6 ::::. oe>n Pa t
AR 27,PG 7D
> \ l s >t 1 1 / / i �P.s / �/ / �`�` �` \ N O. 5A G� •' / '` PARCEL 15530
2. ±3 280 SF EXISTING IMPERVIOUS TO BE REMOVED s.�, ` Q / ///�\ �� �� \
�\�. � �\\ EXCELSIORr�624--
3. ±28,583 SF NEW IMPERVIOUS-3,280 SF EXISTING IMPERVIOUS TO BE REMOVED ElP s\� \� X,04;
// /\ `���� `` �` MAT , ® ,Z6o !� \ - ::: ::::.
25,303 SF NET IMPERVIOUS. / � / \ � ` \N\,�\\ ®� 6° . - - > 0/,�.1,�� � - - --�- DOWNSPOUT o
4. 18.6% IMPERVIOUS `' - <�CC / �\ \ \� �� �� 66 `. ' nLi CONNECTION TYP. Zoned R10 ` 00 rN
��` ` / \ \ ` A �\ ` ` \ P`s 62(� PALE 0 U
�, ,����61s / \\ \\ �,\ `� QN �. FF cP&L�o� <i:;�}r.:... (SHEET 7) O Z
5. 102,640 SF DISTURBED soT N.
�� ��` ,\ ,���P -• -s2� �.•�,- - ` Z O o N
�6����` \````� �JBop/or y��\\\ G��CJ •Y'�� s CO\ '� W I Q�
\ W`�\y'k ` ` _ 3 ` t3'DEEP i $•-I
Legend $p 24
y'A �` \\ s>> i `�` r FQ 6 6' CO ElP iB�ecar, <::::::::::::::: i ` U 00 �--�
EIP - • - Existing Iron Piped �� ��S ' ` ` ` \`\ � �\ ` _ �� o r� ::::.
EIS - • - Existing Iron Stake (Rebar) �� ti� v � �Q• ��� � V v v 0 �6 1 X \ DANNY wAYNE POWERS � � Q
R/W - Right Of Way i \ 0 as 1LTd Pa 178 ` r l �\ •1--
WV - Water ValveO�.\\ `\ `�`� _ \ \\ 622 21.00 0r 'M 0°k \ :. .:,::::i::: U 00 �•• A 27.Pa 18
c �\ � \ FF Apo e ' :. :. (� Q
CO - C/eanout �'A `� \ '`!G� \ \` �` �� \ \\ E /I� \ o `•:::` Q::.::::::.�` PARCEL 15535 �"
A / O v� �)
PVC - Polyvinyl Chloride ��G ���� �` Q� ` `\ �`` \\ \`\ Y\ TOP OF IRON PIPE �. . :..:C: .. ' � O
\ ` ` `` 6 S \\ ` ` • ELEVA 7)ON= 622.00 NA V988
zQJ
P/D Permanent /denti5er / ` /^ \ QQ \ x \ \ ( ) '
- Existing Tree
CP&L - Caro/ina Power & Light Company Z - / (�
NCGS - North Carolina Geodetic Surveyso " c9.� ElP 5 5 10 ��': :::::: ..:.. +�-
GPS - Global PositioningSystem "''`sue= �� �� `� I ' I ~ -
WS - Virtual Reference Station `t C �� �� _ � '� �� 0 �l 2 '`' ..` \ 1g I I I '� C)
NCRTN - North Carolina Rea/-Time Network �� / � � � �� �_/ `��� :`.`.�`.•�•
NA 83 (2011) - NORTH AMER/CAN DATUM 1983 �'A` ��� 3`'�� ��� / , \ \\ „V„ SWALE \ .�:.::::: / / P B 2 ' Z o�
NAV1788 - North American Vertical Datum of 1988 '; /
� _�'r� / / O � ` 3� NO. SB1 CIA NA ANArA V •. :..m•. :. :•
�5�� "� 1• / �. 's EXCELSIOR aR ism Pa I15 ::;::�;: : : :.: SEE tREE �•-�
Surveyed LineCD
Surveyed Line `�•y/�` ,p ` �1�,�'' / / ` \ E/S MAT c FR EI��TM
Line (not surveyed) NOTE: NO WETLANDS EXIST ON THIS SITE. THIS DETERMINATION WAS ��;'',,9�� ' OQ �jj REBAR Zoned R10
A �.-� a..........
11J N.C. GRID COORDINA 1F :. :::J:: : : :: :::. :. pR�E
Approximate Right Of Way Line (not surveyed) - zF���� _ �/ // \ NAD 83 (2011) F /
BASED ON A SITE VISIT AND HAND AUGERING CONDUCTED BY Z� ,9 / �. 132� N= 720,69324 :,� �:�:elpsnN� / W
Fence (surveyed) .. ..,��� ._. / � � ,1•Z ,a•.
ROBERT W. BRANTLY, P.E. WITH ENGINEERING AND ENVIRONMENTAL _���:; / 6 55 E= 1,860,616.71 .
o
� = / / / 1� U.S. SURVEY FEET ` 21¢pB, �N
- ---610---- Major Contour Line (surveyed) SCIENCE COMPANY ON APRIL 26TH, 2023. _ _ / \
® - - New Contour Line ( > -----610- / 2i¢0"'�/o o/ST"No o/STq / a
NOTE ADDED 7-11 -23 o�' GR Q nC3
Limits Of Disturbance �� /_ ` nE ovz gNCEJ NCEJ \ I�
Silt Fence V Y / / W O
- -609
EIP ` / LOCAL GPS/GNSS Scale Point
6"NAIL SET
RIPRAP / r : 1 NAD GRID C ORD/NA 7E
30 0 15 30 60 120 RISER AND DISSIPATOR `-/ 83
6" OUTLET PIPE N= 720,645.98
BEARSKIN HOLDINGS, LLC E= 1,860,825.50 ,
Zoned R10 us. SURVEY FEET
u S. SUR vEY FEET \ as 212 Pa low
AS1Q0.5-71D
1 inch = 3O ft.
PARCEL 15534