HomeMy WebLinkAboutWPO200700078 Plan - Other (not approved) 2023-01-09rn
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J 78E-phase 2B Fontana
o�tX
36.36 Ac. j DB 1809-473
Tc=15min. mini w
TMP 78.E' _ F �! Use: Residentual
-- Fontana Owners Zoned: R4
Association, Inc.
Q
DB 2649-024 1yo
S60 23, 3g„ �
IF
4DEP
OgF I _ / cry E
56
/ � � � \ � 1 i Existing IN _ _ _ _ j�
_ Stormwater J
ManagementNew 2 20' D DE!mil
Easement Acce EP 20' P
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tK
�i -12 ywE2' •I7
99.SCALE:l 250' IF -w -- --E 2--1--9--`�---- : 2 312-50.a----------- ------
Residue B oo!N ----w+�
- R-_ E241AS-BUILT DRAINAGE AREA MAP y" A Portion of TMp 78
-
TMP 78-58I
re Apartments LP
IB 2662-315
N83'24'38"
68.56'
/`- N87'40'24"E
,- 60.54' /
78-9
Hotel, LLC.
24-249
HC, EC
Of TMP o ,.- 18.77 Acres E37
(Includes 04,E tt-11 "o' ��o Area "X„
w i„t to i J C99 -
158,44' 1.08 Acres irk i, t;
N76`53'55"E �_ \
--- _--- . , j N49'19'20"W i E 1 20' DEP �: col o }x
S�$7 312.45'
SO SF co`L i S56_19'58"E___-- 1 82.43 Mi LLJI/ i-20' PDE
0 -r--172.70 E148 I IN -' N
' iT - i __j
0 � o/ v PDE__276 4 ° a J I \
g .� \ 20' PDE - L= 251.80' Cl c� � ----,
i cow \ \
52 c>
-Exist M' 254.7.2� _ g9► \ \
DEP_/
t� ,- ' _
C75Sanitary Easement �-
% dd E154- `
127 C79 DB` _22 O 30"W 1�6. S49°19'20'E PDE _
20 PDE � -20' DEP 82.43 o� . ' C48 L=31.F;
CC �5�
C8a �js7 N23.40_, 5�0�
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CD
C8152 �--- 20' PDE L= 292.19'
19
S83'24'38" W 1-4
S06*35'22"E 45.00, +`= 336.03'
-�- 10' DEP - . _ . _- 00
TMP 78-11 co
Hurt Investment Co. TMP 78-12 � �'
North Pc
antovs Townhouses LLC. LU
DB 2102-281
DB 1919--443 DB 2102-27>
DB 2860-231
Cm)Residue A DB 2088-461 N °° � PDE
Use: Hotel A Portion of f TMP 78--12 Use: Vacant o :�
14.12 Acres Zoned. R-6 °° "�
i� 0 0-1
Zoned:HC AREA SU
N � �
VSMP AMENDMENT NARRATIVE:
THE AS -BUILT DATA SHOWS THAT SWM-3 WAS BUILT TO 85% CAPACITY OF I
THE TOTAL DESIGN VOLUME HOWEVER THE REQUIRED 4X WQV PERMANENT
POOL VOLUME EXCEEDS THE DESIGN VALUE, THE AS -BUILT -'
POST -DEVELOPED 2-YR (18.56 CFS) AND 10-YR (29.09 CFS) STORM PEAK
DISCHARGE VALUES WERE ABOVE THE DESIGN LEVELS BY 9.07 CFS (DESIGN
= 9.49 CFS) AND 12.22 CFS (DESIGN = 16.87 CFS), RESPECTIVELY, THIS
AMENDMENT PROPOSES TO COVER HALF OF ONE OF THE TWO V ORIFICES
AT ELEVATION 489.43ON THE RISER WITH A STEEL PLATE, RAISE THE
EXISTING 2.5' WEIR AT ELEVATION 491.40' TO 492.70', AND RAISE THE RISER
FROM 493.03TO 493.53'. THESE CHANGES WILL BRING THE PEAK FLOW
DOWN TO 9.24 CFS AND 16.19 CFS FOR THE 2-YR AND 10-YR STORMS,
RESPECTIVELY. THIS WILL SATISFY THE DESIGN REQUIREMENTS FOR PEAK
FLOW WITHOUT EXCESSIVELY DISRUPTING THE MATURE AND STABILIZED
SWM FACILITY. ADDITIONALLY, THE PLANTINGS SPECIFIED IN THE APPROVED
PLAN WERE NEVER INSTALLED. LANDSCAPE ARCHITECT, AMMY GEORGE,
PERFORMED A SURVEY ON NOVEMBER 4, 2022, AND THE CONCLUSION OF
HER ANALYSIS OF THE EXISTING PLANTINGS ON THE AQUATIC BENCH WAS
THAT THE REMOVAL OF THE EXISTING PLANT COMMUNITY WOULD BE OVERLY
DISRUPTIVE AND THAT IT WOULD TAKE YEARS FOR THE REPLACEMENT
PLANTINGS TO BE A COMPARABLE SIZE AND DENSITY OF THE PLANT
COMMUNITY THAT IS THERE NOW. IF THE INTENT OF REPLANTING THE
AQUATIC BENCH IS TO FOLLOW THE ORIGINAL PLAN, TWO SPECIES FROM
THE ORIGINAL PLANTING PLAN ARE ALREADY IN EXISTENCE ON THE AQUATIC
BENCH: IRIS VIRGINICA (VIRGINIA BLUE FLAG) AND SPIRPUS VALIDUS
(SOFT -STEM BULRUSH). ADDITIONALLY, THE IRIS PSEUDACORUS FROM THE
APPROVED PLAN WOULD NOT AND COULD NOT BE PLANTED TODAY AS IT IS
CONSIDERED A HIGHLY INVASIVE SPECIES ACCORDING TO THE VIRGINIA DCR.
FOR THESE REASONS, NO CHANGES TO THE AQUATIC BENCH OR THE
PLANTINGS THEREIN ARE PROPOSED.
MMARY
TMP 78-12
Plus Area "X„ :::• 57.88 Acres
Less ROW ..,,,.,,., 1.08 Acres
Total Residue 4'29 Acres
54.67 Acres
S49'14'46"E
553.55'
RESIDUE AREA SUMMARY
Residue "A" ..._........ 14.12 Acres
Residue "B" ............ 18.77 Acres
Residue "C" 21_78 Acres
Total Residue . ,.
54.67 Acres
TMP 78-12A
Montessori Community School
DB 2943-36r
DB2941-185
DB 2482-343
Zoned: HC, EC
IF
Z
N- N63°13'22"W
--1 O ---
-P= 31.96'
IF IF C24 95
IF
IF
11
/,
c
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N47°35'15"E cr'
J
o
C42L`28.03'
C41 L= 31.42'
C40 L-
0' All°24'10"E 16.99,/
' S31 °24'10"E 8.65'
S58°35'50"E 1'2231"w `� iF TMP 78 r
N34°07'06"E 2.27' � iF-' N6 5��D2
21.50' ; C66 L=51.38' 151.26' Central TeleThone C07npany o
o Cn
f
"' C17 L=33.61' ' Virginia, Inc.
N C18 L=16.89' � ';-�-'�-E115 1 �
L'iN w Use: Co�ramunwation Facility
C19 LW7. so9° w
S57°0206E _.� Zoned: R--6
N06°17'07"E �n I `36 , ih I)B 1 >28- 718
3574
.' 134.90_,
C23 `°. o a �, �, ��. IF'; N IAA:
F-1 CD
J CDC67 w N
L=38.00 N47'14'511 "W L_ g0.19' 0L� �� S�� SL �L "' v ? L=53.76' S�0°
C22 73. i 5' C21 G �� , U C � ; 0
S
Ln
TMP 78-55A4 o
S52'51'48"E C31 �._.- North Pantops Townhouses, LLC o "�
C3 65 89.11' L=36.26, DB 2088-461 ;� ��`D S69"46'27"W TMP 78-.. ,`-A
0 Use: Vacant Westminister Card(,,rbrr.r°zi
Zoned: PD-M0; EC 0 0 0 ` .� Of The Blue Ridge
.�� r-----------------------------;� cp `� 4�1 ; DB 1502--j;03
x I
TM 78-Par.12B ( Use: Rest '
3-D Pantops, LLC
Zoned:
', N � cn
DB 2801-57 o N co
P cw �, ,
1.752 Acres TM 78-55D 1.M
Zoned: C-1, EC I Nigel Bra � Corven & Eath L ..
10Q ingr,. -
TN'
f
Westmir,; "'_ 0..
Of
1c"`� Use. ltes? r,
Zoneo`
DB 15.94_8
T)T? ! A ! T NJ NJ)E
1 S1 of 9 PARCEL OVERVIEW
Q�S6 of 9 SWM#3 DETAIL
.. ........ ", ........... 1111" of 9 ........DETAILS
N54°26'27"E ~'
46.09 z C28 _
N47'35'15"E L-59.33'
33.96' -
VDOT M0N
----_- N __ 203.65' 110.61'
Route 250 -C27 N49'31'54"W
Richmond Road L=51.74' 39.27'
V' '-fable R/W
C136.77'
C15 L=16.42'
C16 L=30.79' '
N34'07'06"E 6, 79' r
N55°52154"E 39.03' '
DB 1515-677 1 DB 1791-274
Use: Vacant s ' R
Zoned: PD-MC, EC
i I '
U. S. 250
e. eSlavrnr
Zoned: fI
VICINITY MAP
0
F
SHEET NUMBERING KEY:
�-INDICATES ORIGINAL
Ale PLAN SHEET N0.
INDICATES
AMENDMENT AMENDMENT NO.
INDICATES AMENDMENT
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DESIGNER: DG
PRODUCTION
�44AyTH of �11P
o �
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U � 9
Dustin E. Greene
Uc. No.
06
55833 �4
�0� 12/14/2022
493I ONAL ''�r
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DATE:
12 14 2022
SCALE:
AS SHOWN
JOB:
LUXOR & N. PANTOPS
FILE:
10.0076
SHEET:A1
. 1 OF 9
DESIGN VOLUMES
ELEVATION
(FT)
CONTOUR
AREA (SQ. FT)
INCREMENTAL
STORAGE (CU. FT)
TOTAL
STORAGE (CU. FT)
490
27,9S2
0
0
491
30,779
36354
36354
492
33,606
49446
85800
493
37,211
181S5
103955
494
40,817
39014
142969
495
43,164
41990
184959
496
45,510
1 44337
1 229296
AS -BUILT VOLUMES
ELEVATION
(FT)
CONTOUR
AREA (SQ. FT)
INCREMENTAL
STORAGE (CU. FT)
TOTAL
STORAGE (CU. FT)
489.43
20,355
0
0
490
21,282
11,864
11,864
492
27,300
48,452
60,317
494
31,962
59,195
119,512
496
37,454
69,337
188,848
= 82% OF DESIGN VOLUME
AS -BUILT WQV
ELEVATION
(FT)
CONTOUR
AREA (SQ. FT)
INCREMENTAL
STORAGE (CU. FT)
TOTAL
STORAGE (CI FT)
480
3,431
0
0
482
6,430
9,704
9,704
484
9,107
15,458
25,162
486
12,012
21,050
46,212
488
14,726
26,689
72,902
489.43
20,355
24,972
97,874
.i
PEAK FLOW AND WATER
SURFACE ELEVATIONS
Pre-Dev
Design
As -Built
2-yr Peak Flow (cfs)
26.71
9.49
18.56
10-yr Peak Flow (cfs)
37.38
16.87
29.09
2-yr WSE (ft)
x
492.03
492.28
10-yr WSE (ft)
x
492.74
492.94
100-yr WSE (ft)
I x
1493.64,
493.58
AQUATIC BENCH SURFACE AREA
Design As -Built
Aquatic Bench Surface Area (sq. ft) 5612 5965
REQUIRED 4xWQV FROM
APPROVED DESIGN PLANS
Drainage Area DA-3
Sub -Area
Acreage
% Impervious
Required 4xWQV
DA-3 Westminster
10.76ac
49%
38,278ft2
DA-3 Pavilions -II
23.30ac
28%
47,364ft2
Total Required WQV
85,642ft2
I
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�� �I►.:' , �/llr�� 7� � •�•� • •I.:. `;�:i ��'u't./i lien:n.li.�inviTt�t[l''L►� �,���♦
AQUATIC BENCH PLANTINGS
Aquatic Bench Plantings
Design
As -Built
Iris pseudacorus (Yellow Flag Iris)
Iris pseudacorus (Yellow Flag Iris)
Iris Virginia (Virginia Blue Flag)
Iris Virginia (Virginia Blue Flag)
Nuphar lutem (Spadderdock)
Scirpus validus (Soft -stem Bulrush)
Scirpus Validus (Soft -stem Bulrush)
Typha latifolia (Common Cattail)
Lemna minor (Common Duckweed)
Juncus effusus (Soft Rush)
Persicaria hydropiper (Marsh Waterpepper)
Carex vulpinoidea (Fox Sedge)
OAF
k1l, Wool
1. VDOT Std. ST-1 Steps are to be provi led Hand Wheel
/ � `• � •• � �� , � •ifi/� ram_
in the structure,
Fill1 I It Ai
-
0 are water Ig
Corrective measures will be the responsibility
of the contractor.
SDMH GRATE
TOP=494.06'
INV. OUT=487.54'
AS -BUILT SWM-3
*AS -BUILT DATA BASED ON FIELD SURVEY
BY RGA FROM NOVEMBER, 2022*
221.5 LF 36"
RCP @ 7.99%
DI GRATE
TOP=494.55'
I NV. IN=477.17' SDMH
I INV. OUT=476.77' ) TOP=500.89'
INV. OUT=495.29'
EMBANKMENT ELEV. =496.2
43.0 LF 36"
RCP @7.72%
RISER \ \ \
(SEE DETAIL) \ \
N Ile
INV. OUT=486.95'
/* SDMH
TOP=498.70'
FOREBAY \ \ \ \ \ \ / / I+ / / / I I l �1 \ \ \ \ INV. IN=493.13'
INV. OUT=492.93'
1 \
RIPRAP SPILLWAY
Ile
v i
AQUATIC BENCH
RIPRAP SPILLWAY \ \ \ \ \ I I I I I
30 0 30 60 90 \ \ \\\� \ �l /I / / FOREBAY
\ \ tnow
SCALE: 1"=30'
on ractor s a prOviae s 'op wgs ,or _1---- Rust Proof C
the ou tfall structure. �
\ Valve item
Support / °
(D+T)/1
% r / 8" Perforated PVC 4' Diameter 4
I / / r I Concrete Standpipe
Riser W E-nd Ca °
/ r - Rust Proof 4
I � � 7
VDOT #1 Stone o
Valve aloe Stem
° p a
6' Gate Valve
/ /� v0
000 Stone I #6 Bt #6 Bars at
Bars a
°° -- Watertight yea 4' O.C.
°°°° 16 O.C.
V s� IY I 0,0
1V�4 � // °°° RCP Borrell NOTES:
0, shall be 4000 psi.
0, ° 36"
s / I I \ c // 1 �( i f / I 2. If the pipe is placed in a trench, then the sides of
510
i the cradle shall conform to the trench.
I / 6" Class 53 DIP Pipe @ 1% Min. Concrete Baase.•° d•
for Riser d C Concrete Craddle Detail
%I 11 1 Of 1 N.T.S.
60
a G SWM 3 Dewaterin Pie Detail Set Valve in Conc. Base,
B
of 1 NOT TO SCALE (3,000 PSI Min.)
Typical 10'xl ;
LANUS)UA 'k SUHF.L
Basin _X - 11 ----
FIOor * r
BOTANICAL & MINIMUM WATEh
KEY COMMON NAME CALIPER DE
eilow t-iaq Iris I I `" 1
4.
1 IV ! I / A I S 1 N
to be ply r ted. insuf
t n combined iA�lr �+rtopsoil� IVupnar LUterrl
hct the orr bined ' o iarc, mi kh equals three to six inches. NL N/A
rw o+ + t ,nc sh li r , r nr c r Spadderdock I
4. Any r ni S,.b �I,U, ]r Oti.� �d tl� (, Irti.f YVater
Resource Off(Jo! prior to plarltir,j. Scirpu�
U Plants to be pace.d or I8;rll;ar:; SV
Soft -Stem
D
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DESIGNER: DIG
PRODUCTION ZD
AtiTS op areP
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Dustin E. Greene
I No.
66833 ���
�.a 12/14/2022 {�
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DATE:
12 14 2022
SCALE:
AS SHOWN
,JOB;
LUXOR & N. PANTOPS
FILE:
10.0076
SHEET: A6 . 2 OF 9
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0+00 1
Stormwater Management Facility Water Quality Volumes
Required WQV Provided WQV Provided WQV l Provided WQV
Facility Impervious (4xWQV) (0 -1) (1 -2') (2' -6')
---- - — 3 —
3
SWM #3 516,996ft3 86,168ft3 16,333ft3 17,123ft3 53,388ft°
WQV = 97,874 > 85,642 ./
CURRENT CONDITIONS
12" ORIFICE (X2) @ 489.43'
LGOAL IS TO COVER
TOP t OF ONE
OF THE TWO 12"
ORIFICES 4 489.43'
(9) X 2�" (OR LONGER) TAPCON
(OR EQUAL) EPDXY SEALED
RECOMMENDED FABRICATION:
o�
8"
WIDTH AS
ow
NEEDED
Total WQV Provided
(6' Depth)
282, !-�,144t 3
— � 86,844ft' ---_ ------
.,RIFICE
J"HOLE 1" FROM TOP TO BE USED FOR
CLEVIS ATTACHMENT & LIFT, THEN
BOLD ATTACHMENT (typ. OF 3)
NOTE: PLATE TO BE ARCHED TO FIT EXTERIOR RADIUS OF A
STO. 4 FT. MANHOLE
WIDTH AS NEEDED
4' MANHOLE TYP._//
HOLE 1" FROM SIDE
WALL FOR BOLTS (TYP.
OF 6)
SWM #3
NOT TO SCA
-Built Outlet Structure & Embankment Detail
493.07'
494.15'
493.45'
492.57'
492.41'
491.88'
493.03'
RAISE EX. 2.5'
WEIR TO 492.70'
491.40'
manh
and c
acces
struci
plastic
489.43'
_Normal Poo'
Aquat 4 99.43'
Bench
Pond Dro
W/Gote Vaivr
6" DIP Pipe
Trash Rack
Installed
1
RAISE RISER
---- TO 493.53'
Trash Racks
Installed
COVER HALF OF
ONE OF THE TWO
1' ORIFICES STEEL
PLATE. SEE DETAIL
THIS SHEET.
480.49'
43 LF of 36" RCP @ 7.72%
4yl n.LJ
a.
'.--Pond Bottom ° '
Elev = 480.0 a ° 8'x8'x1%' a a a ° a ° o °
Concrete Base
- d a 4
-- - -1 - C,
Top View
trash rack
manufactured by
Plastic Solutions
540-722-4694
Note:
Trash Racks Details shown are Generic and a
Supplied for the Purpose of Showing the Tray
Racks Only. Riser Structures Shown on Deto
are for Illustration Purposes Only,
concrete ris<
i
Elev. B—B
Trash Rack Assembly
_ __A _
11 3 8
—02
_
f�
22 1 8
27 1 2
32 7 8
38 1 4
43 5 8
49
54 3 8
59 3 4
65 1 8
71. 1- /8
76 1 2
81 7 8
87 1 74
width code
03
04
05
06
07
08
09
10
11
12
13
14
15
16
B
11 3 8
16 3 4
22 1 8
27 1 2
32 7 8
38 1 4
43 5 8
49
54 3 8
59 3 4
65 1 8
70 1 2
75 7 8
81 7 8
87 1 /4
length code
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17 1/2
12
height codel 0
02 1
part code=
fR + width code +length code + height code
(ex. FRO80802)
NOTE: CUSTOM SIZES AVAILABLE UPON
REQUEST
PLASTIC
240 McGhee Road
P.O. Box 4386
F LA T
01"' T IAA S H R C K
SOLUTIONS
Winchester VA 22604
INC.
540-722-4694
www.plastic-solution.com
NOTE: THERE IS 2.05' OF FREEBOARD BETWEEN
THE 100-YR WSE AND THE TOP OF DAM
477.17
221.5 LF of 36 RCP @ 7.99%
476.77
ADDED
DI GRATE
:oncrete Cr to Extend '
A Top View
Sect. A —A
PE
uctural plastic
B
A
Trash Rack Assez-,
Lsh rack manufactured
Plastic Solutions Inc.
)-722-4694
Top of riser
Rack; Details shown are Generic and are
lied for the Purpose of Showing the Trash
s Only. Riser Structures Shown on Details
for Illustration Purposes Only.
...ii►ice �►��.�
4' Diam-1
Conc. Sic
NOS; E'SIZES AVAILABLE UPON REQUEST
PART No 4-0" PYRAMID PLASTIC 240 McGhee Road
P.O. Box 4386
+"1� .A ¢� g_7f �D A C K SCL � 1 �C�n% S Winchester VA 226u ,
PYI) 48 INC. 540-722-4694
WITH CONCRETE RISER
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DRAFTER: CS
DESIGNER: DG
PRODUCTION ZD
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Dustin E. Greene
Lic. No.
55833
12/14/2022
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DATE:
12 14 2022
SCALE:
AS SHOWN
JOB:
LUXOR & N. PANTOPS
FILE:
10.0076
SHEET: �0.3_OF 9