HomeMy WebLinkAboutWPO201800033 Plan - Other (not approved) 2020-06-22Purpose of This Minor Amendment
I The purpose of this Minor Amendment is to relocate -the Storm Water Management Basin. The
original Storm Water Management Basin could not be installed due to existing; monitoring -wells in
that location. The original Minor Site Plan Amendment was approved on February 1, 2007.
2. The limits of this Minor Amendment are shown on Sheets C-400.
3. For purposes of storm water calculations the existing conditions shown on this plan are what Were
in place prior to construction of improvements shown on original Minor Site Plan Amendment.
4. The total area of disturbance for this .minor amendment is 1.25 acres.
r
F t TMP 31-21F
Earlysville Volunteer Fire Co.
DB 1666-71
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r ; 291.32'
I I ( TMP 31-21A1
°
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i i t DB 2037-437
Zoned: LI N 33'09'47' W zo
l�LO
l I I 1 1
Nit
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CURVE
ARC LENGTH
RADIUS
DELTA ANGLE
CHORD BEARING
CHORD LENGTH
C1
194.15'
666,5W
16'41'15"
S 67059'24" W
193.46'
C2
200,25
1.537.17
7°27 51
S 56009 42" W
200.11'
C3
278.86'
1.85.57'
86"06 00
N 33009'11" E
253.35'
C4
205,15'
1.68.93
69034'50"
IN 23"20'46" E
192.77'
1,
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rr r! 1 r r
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• Refer to Sheets I
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$1,11 lko
TMP 31-21A
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DB 1825-109
27.1 +/- Acres
/ ! / Zoned: LI
1` r� /- _-` /� •� S 33'38'52" IE
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TMP 31- I OAS
4F, LLC
-r=—v_� <' DB 1804-200
0.5 +/- Acres !'
zz
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TMP 31-19A i
4F, LLC
DB 1804-200 ` 1
0.4 +/— Acresl
Zoned: RA
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4F, LLC
< DB 1804-200
Zoned: RA
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DB 1604 200
Zoned: A
New Storm Water r' a• /' ... • /'
Management Basin i� ? ----'' /` ` ; • /!
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a. Yin'ks miwtiMvr 9f �,� // r« j _....T 60�/j�/ G..,.
Deleted from this pro}ect.
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/ Zoned: RA
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Limits of Minor Site
f} J'4
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Zoned: RA
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1 PARCEL OVERVIEW
—00 SCALE: 1" = 100'��
Plan Amendment
315 j 49 r rl/
i
—0
S 44'00'49"
942,00, _
`° TMP 31-21C
F, LLC
TMP 31-21K DB 1804-200
+� Thomas or Catherine Manusco Zoned: RA
-- DB 1B64-665 1
Zoned: RA
100' 0 100' 200' 300'
SCALE: 1 "= 100'
WP0201500083
STORM WATER MANAGEMENT
AS -BUILT PLAN
FOR
E A R L `Y7 SV I L L E ]BUSINESS PARK
TAX MAP 3t, PARCEL, 21A
RIO DISTRICT I , ALBEMARLE COUNTY, VIRGINIA
SITE DATA
SITE PLAN NUMBER:
SDP200500144; SDP201500012
WPO PLAN NUMBER:
WP020060039
LEGAL REFERENCE:
TM 31 PARCEL 21 A
PARCEL ADDRESS:
395 REAS FORD ROAD
EARLYSVILLE, VA 22936'
SOURCE OF TITLE:
DB 1825 PAGE 109
OWNER ZAPPLICANT:
4F, LLC
2885 EARLYSVILLE ROAD
EARLYSVILLE, VA 22936
ZONING:
LI — LIGHT INDUSTRIAL_
AIA — AIRPORT IMPACT AREA
MAGISTERIAL DISTRICT;
RIO
BUILDING SETBACK:
50' FROM PUBLIC RIGHT—OF—WAY
50' FROM RURAL AND RESIDENTIAL DISTRICTS
30' UNDISTURBED BUFFER ALONG RURAL AND RESIDENTIAL DISTRICTS
PARKING SETBACK:
10' FROM PUBLIC RIGHT—OF—WAY
30' FROM RURAL AND RESIDENTIAL DISTRICTS
SOURCE OF BOUNDARY:
PLAT RECORDED IN DB
SOURCE OF TOPOGRAPHY:
AERIAL SURVEY BY LOU5A AERIAL SURVEYS ON APRIL,10, 2007.
FIELD RUN SURVEY BY MERIDIAN PLANNING GROUP, LLC, ON FEBRUARY 19, 2015
2—FOOT AND 1—FOOT CONTOURS.
SWM VOLUME CONTROL:
STORM WATER MANAGEMENT BASIN.
SWM WATER QUALI'rY:
810-FILTER.
PUBLIC WATER SUPPLY:
THIS PARCEL IS LOCATED WITHIN A PUBLIC WATER SUPPLY RESERVOIR WATERSHED.
Land Use Table
Description
Pre -Development
%
Post-Developrrient
%
Buildings
234,976
18.7%
248,256
19.8%
Paved
257,644
20.5%
261,525
20.8%
Pervious
761.,908
60.7%
744,747
Total
1,254„528
100.0%
1,254,528
100.Q°!o
S�
_�o SITE cj
Q
Q�
-rt
Lti
2 VICINITY MAR
7-5SCALE: 1"_ 2000'
SIGNAT [
SHEET INDEX
C-400 ......... COVERSHEET
C-401 ......... r
C-601 ........ SITE PLAN
C-602 ........ SITE DETAILS
C-603 ........ STORM WATER MANAGEMENT PROFILE
Cr+ omnne4 tsrn�rco AAAMA (+UNACKITr'At ('Itt -1111 W
.-604 ....... S 4 4A414 1 'A4"54 41 S! SY I:RTJ's44��! i ! e: e� a ■+�� _ _i _ r_5
C-605 ........ 1111Al I '8 APPAR
LEGEND
PP POWER POLL,
SCC STORMWATER CONVEYANCE CHANNEL
o- BUILDING SETBACK
- -�--� - PARKING SETBACK
PANEL
APPROVALS
DATE
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNER/ZONING
ENGINEER
INSPECTIONS
ARB
DEPARTMENT OF FIRE RESCUE
VIRGINIA DEPARTMENT OF TRANSPORTATION
HEALTH DEPARTMENT
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SHEET
NO.
C-601
SHEET
3
of 7
I�
575
570
565
560
555
New Storrnwater
Conveyance Channel
End Level Spreader
Begin Level Spreader
- -
-- -- - - ----.. -
,
Slope =
1.5%
10+00
STORM PROFILE
�,C`60y VERT SCALE: 1" = 5'
HORZ SCALE: 1"= 20'
11+00
12+00
Top of Berm=568.50-
New Primary Outlet Structure
7
New Emergency Spillway
48" Diameter Riser w/An
i-Vortex Device
Width=10'
Crest EIev=566.50
E1ev=566.75
V 100 YR W.S.E=567.41
- ---
-
New Orifice w/Metal
Screen
15" Dia,
110.4-24 RCP 00.41%
Inv EIev=56®
Bottom of Basin=56®
New 32 -24 RCP @ 0.50%
Upper Inv = 563.00
Plew 35-24" RCP @ 0.507.
Lower Inv = 562.83
f
Upper Inv = 563.00 .
!
Lower Inv = 562.83
2 STORM PROFILE
C-60- VERT SCALE: 1" = 5'
HORZ SCALE: 1"= 20'
15+00
POST -DEVELOPMENT ROUTED HYDROGRAPHS
DA-8:1-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
16.37 cfs
Inflow Peak -rime ............
12.20 hr
Routed Peak Flow.........
9.19 cfs
Routed Peak -rime .........
12.45 hr
Maximum Pond Storage..
0.2744 acre-feet
Maximum Pond Elevation.
566.05 a
DA-B: 2-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
18.56 cfs
Inflow Peak Time ............
12.20 hr
Routed Peak Flow.........
9.84 cfs
Routed Peak -rime .........
12.46 hr
Maximum Pond Storage..
0.3145 acre-feet
Maximum Pond Elevation.
566.40 ft
DA-6:10-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
37.28 cfs
Inflow Peak Time ............
12.20 hr
Routed Peak Flow.........
37.02 cfs
Routed Peak Time .........
12.30 hr
(Maximum Pond Storage..
0.4134 acre-feet
Maximum Pond Elevation.
567.13 It
DA-8:100-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
57.27 cfs
Inflow Peak Time ............
12.31 hr
Routed Peak Flow.........
57.16 cfs
Routed Peak Time .........
12.33 hr
Maximum Pond Storage..
0.4478 acre-feet
Maximum Pond Elevation.
567.38 ft
DESIGN STAGE STORAGE
Stage (ft) Discharge (cfs)
563.50
0.00
564.50
3.91
565.00
5.52
565.50
6.93
566.00
8.09
566.50
9.10
567.00
24.81
567.50
52.70
DESIGN STAGE -STORAGE REPORT
Elev(Ft)
Storage(CF)
Area(SF)
563.00
127.1
25,11
564.00
3045.1
3295
566.00
11314.0
4974
568.00
23167.0
6879
16+00
IAS-BUILT ROUTED HYDROGRAPHS
DA-B:1-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
16.37 cfs
Inflow Peak -rime ............
12.20 hr
Routed Peak Flow.........
9.12 cfs
Routed Peak -rime .........
12.45 hr
Maximum Pond Storage..
0.2685 acre-feet
(Maximum Pond Elevation.
566.01 ft
DA-B: 2-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
18.56 cfs
Inflow Peak -rime ............
12.20 hr
Routed Peak Flow.........
9.77 cfs
Routed Peak -rime .........
12.46 hr
Maximum Pond Storage..
0.3172 acre-feet
Maximum Pond Elevation.
566.36 ft
DA-6:10-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
37.28 cfs
Inflow Peak Time ............
12.20 hr
Routed Peak Flow.........
37.01 cfs
Routed Peak -rime .........
12.30 hr
Maximum Pond Storage..
0.4139 acre-feet
Maximum Pond Elevation.
567.12 ft
DA-8:100-Year 24-Hour Routed Hvdroaraph
Inflow Peak Flow ............
57.27 cfs
Inflow Peak -rime ............
12.20 hr
Routed Peak Flow.........
57.19 cfs
Routed Peak Time .........
12.30 hr
Maximum Pond Storage..
0.4590 acre-feet
Maximum Pond Elevation.
567.30 ft
AS -BUILT STAGE STORAGE
Stage (ft) Discharge (cfs)
553.40
0.00
564.50
5.25
565.00
6.92
565.50
8.09
566.00
9.10
566.50
10.01
567.00
23.45
567.50
68.94
AS -BUILT STAGE -STORAGE REPORT
Elev(Ft)
Storage(CF)
Area(SF)
563.00
122.5
2448
564.00
3074
3455
556.00
11628
5099
568.00
23655
6928
17+00
575
570
565
560
555
13+00
14+00
Trapezoidal Channel Parameters
W
C.�
��_O_r_z
Vert
Z
b
d
Area
R
1.0
1.5
4.0
0.83
4.35
0.623
Trapezoidal Channel Parameters
Horz
Vert
Z
b
d
Area
R
2.0
1.0
2.0
4.0
1.41.9
10.40
0.975
oidal Channel Parameters
Horz Z
2.0 1.0 1.5
Trapezoidal Channel Parameters
SCC-1: 2-year flow calculations
n
slope
veracity
0.0500.015
2.7
1k6l
SCC-1: 10-near flow calculations
n
slope
velocity
Q
0.050
1 0.015
3.6
37.3
SCC-2: 2-year flow calculations
b d Area R n Isl city Q
1.110 2.89 0.585 0.023 4.2 12.0 1Deleted from this project.
Horz
Vert
b
d
Area
R
0
2.0
1.0
1.77
8.02
0.900
DESIGN NOTES:
1. Refer to Energy Balance Calculations for 2-year
and 10-year flowrates.
Channel
SCC-2: 10-year flow calculations
n velocity Q
0.0381 0.023
STORMWATER CONVEYANCE CHANNELS
TYPE
W
D
LINING
SCC-1
4'
2'
VDOT EC-3 Blanket/Matting
STORM WATER CONVEYANCE CHANNEL DETAIL
SCALE: NTS
Deleted from this project.
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SHEET NO.
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SHEET 5 of 7