HomeMy WebLinkAboutWPO201800016 Plan - Other (not approved) 2018-12-10BIRDWOOD GOLF COURSE
SITE DATA:
TAX MAP PARCELS: 75-63
PARCEL AREA: 544 ACRES
LIMITS OF DISTURBANCE: 161 ACRES
ZONING: R-1 RESIDENTIAL
PROPOSED USES: GOLF COURSE
UTILITIES: ACSA
DRAINAGE DISTRICT: UPPER RIVANNA RIVER WATERSHED
SPECIAL CONDITIONS FROM NATIONWIDE PERMIT 42
Special Conditions:
As mitigation for the proposed impacts the applicant will grade approximately
0.49 acre of upland adjacent to an emergent wetland found on Hole #16 and
approximately 0.26 acre of upland adjacent to an emergent wetland found on Hole
18 and plant both areas with herbaceous hydrophytee. Approximately 0.75 acre
will be planted. Monitoring reports must he submitted before September of each
monitoring year. The report will identify and document visual observation, the
presence/absence of the dominance of vegetation having an indicator status of
Facultative or wetter vegetation within the planted areas. If a dominance of
Upland species or the presence of invasive species is observed, a corrective
action plan will be initiated. Both areas will be monitored for a maximum f 1
gears. Monitoring will commence following construction in year 1 and in
years 2, 3, 5, 7, and 1.
I ounce: Letter d. 4/26/18 from Vincent D. Pero, U A E, to Chris Schooley, U A Foundatioill
AMENDMENT TO
WPO 201800016
COUNTY OF ALBEMARLE
DECEMBER 7, 2018
PROJECT
SITE
CHARLOTTESVILLE
CITY
VICINITY MAP
SCALE 1" : 5000'
OWNER:
UNIVERSITY OF VIRGINIA FOUNDATION
PO BOX 400218
CHARLOTTESVILLE, VA 22904
ENGINEER OF RECORD:
TIMMONS GROUP
608 PRESTON AVENUE SUITE 200
CHARLOTTESVILLE, VA 22902
CONTACT: CRAIG KOTARSKI, P.E.
TELEPHONE: 434-327-1688
SIGNATURE PANEL:
DEPARTMENT OF COMMUNITY DEVELOPMENT
ENGINEERING
APPROVAL
Sheet List Table
TOTAL: 2 SHEETS
DATE
Y�
Q CRAdG 1. J. KOTARSKI
Lic. No. 0402048507
12/ 07/ 18
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SHEET NO.
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A soils
B Soils
C Soils
D Soils
Totals
% of Total
Forest/Open (acres)
0.00
42.00
0.00
0.00
42.00
26
Managed Turf (acres)
0.00
117.40
0.00
0.00
117.40
73
Impervious Cover (acres)
0.00
1.60
0.00
0.00
1.60
1
161.00
100
Virginia Runoff Reduction Method Worksheet Virginia Runoff Reduction Method Worksheet g g rr
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DEQ Virginia Runoff Reduction Method Re -Development Compliance Spreadsheet - Version 3.0 Site Compliance Summary
BMP Design Specifications List. 2013 Draft Stds & Specs ( �,
Maximum % Reduction Required Below * Note: % Reduction will reduce post -development TP load to less than or equal to baseline load of 65.351b/yr (0.41 Ib/ac/yr)
Site Summary Pre-ReDevelopment Load 20% [Required reduction for Post-ReDev. = Post-ReDev TP load - baseline load of 65.354 Ib/yr], baseline load = site area x 0.41 Ib/ac/yr CRAIGW J. KOTA S KU � 4
Lic. No. 0402048507 14"
Total Rainfall (in): 43 � � );
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Total Disturbed Acreage: 161.00 21 07/ 81
Site Land Cover Summary Sr 3
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Drainage Area Summary
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Drainage Area Compliance Summary
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A soils
B Soils
C Soils
D Soils
Totals
% of Total
Forest/Open (acres)
0.00
16.74
0.00
0.00
16.74
10
Managed Turf (acres)
0.00
141.06
0.00
0.00
141.06
88
Impervious Cover (acres)
0.00
3.20
0.00
0.00
3.20
2
* Forest/Open Space areas must be protected in accordance with the Virginia Runoff Reduction Method
161.00
100
Final Post -Development
Post-
Post-
Adjusted Pre-
(Post-ReDevelopment
ReDevelopment
Development
ReDevelopment
& New Impervious)
(New Impe
Final Post -Development Load
(Post-ReDevelopment &New Impervious)
Pre-
ReDevelopment
TN Load (Ib/yr)
518.10
428.46
Pre -
Final Post -Development
Post-ReDevelopment TP
ReDevelopment
TP Load per acre
Load per acre
TP Load per acre
(lb/acre/yr)
(Ib/acre/yr)
Ib acre r
0.38
0.45
0.43
D.A. A
D.A. B
D.A. C
D.A. D
D.A. E
Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0.00
Managed Turf (acres)
24.03
0.00
0.00
0.00
0.00
24.03
Impervious Cover (acres)
0.59
0.00
0.00
0.00
0.00
0.59
Total Area (acres)
24.62
0.00
0.00
0.00
0.00
24.62
D.A. A
D.A. B
D.A. C
D.A. D
D.A. E
Total
TP Load Reduced (Ib/yr)
7.51
0.00
0.00
0.00
0.00
7.51
TN Load Reduced (Ib/yr)
53.73
0.00
0.00
0.00
0.00
53.73
Total Runoff Volume Reduction (ft3)
11,967
Total TP Load Reduction Achieved (Ib/yr)
7.51
Total TN Load Reduction Achieved (Ib/yr)
53.73
Remaining Post Development TP Load
64.91
(Ib/yr)
Remaining TP Load Reduction (Ib/yr)
Required
0.00
A Soils
B Soils
C Soils
D Soils
Total
% of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres)
0.00
24.03
0.00
0.00
24.03
98
Impervious Cover (acres)
0.00
0.59
0.00
0.00
0.59
2
Managed Turf
Impervious
BMP Treatment
TP Load from
Untreated TP Load
TP Removed
TP Remaining
Downstream Treatment
Practice
Credit Area
Cover Credit
3
Volume (ft ►
Upstream
to Practice (Ibs)
(Ib/yr)
(Ib/yr)
to be Employed
acres
Area acres
practices Ibs
9.a. Sheetflow to Conservation Area, A/B
Soils (Spec #2
10.94
0.28
8,908.02
0.00
5.59
4.19
1.40
9.c. Sheetflow, to Vegetated Filter Strip, A
Soils or Compost Amended B/C/D Soils
13.09
0.31
10,572.38
0.00
6.64
3.32
3.32
(Spec #2 & #4)
Total Impervious Cover Treated (acres)
0.59
Total Turf Area Treated (acres)
24.03
Total TP Load Reduction Achieved in D.A.
Ib/ r
7.51
Total TN Load Reduction Achieved in D.A.
53.73
Ib/ r
Drainage Areas
RV & CN
Drainage Area A
Drainage Area B
Drainage Area C
Drainage Area D
Drainage Area E
CN
62
0
0
0
0
RR (ft3)
11,967
0
0
0
0
1-year return period
RV wo RR (ws-in)
0.00
0.00
0.00
0.00
0.00
RV w RR (ws-in)
0.00
0.00
0.00
0.00
0.00
CN adjusted
100
0
0
0
0
2-year return period
RV wo RR (ws-in)
0.00
0.00
0.00
0.00
0.00
RV w RR (ws-in)
0.00
0.00
0.00
0.00
0.00
CN adjusted
100
0
0
0
0
10-year return period
RV wo RR (ws-in)
0.00
0.00
0.00
0.00
0.00
RV w RR (ws-in)
0.00
0.00
0.00
0.00
0.00
CN adjusted
100
0
0
0
0
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