HomeMy WebLinkAbout20230216 118 Woodlawn Special use permit Stormwater AnalysisLP
SHED
SHED
SHED
EXISTING GRAVEL PARKING AREA
EDGE
O
F
G
R
A
V
E
L
LP
8
CA
Carpinus caroliniana
American Hornbeam
10
TON
Thuja Occidentalis Nigra
Dark American Arborvitae
6
AC
Amelanchier canadensis
Serviceberry (shrub form)
28
TBR
Taxus Baccata Repandenas
English Yew
8' MIN. LANDSCAPE BUFFER
ZONE LANDSCAPING TO BE
PROVIDED PER UDO CODE 11.5
SECURITY FENCE
W. LOCKED GATE
(W. ACCESS CODE)
DUMPSTER ENCLOSURE
LOW BRICK WALL WITH
SOLID PANELING, REFER TO
THE ARCHITECTURAL PLANS
PROPOSED ASPHALT
PARKING LOT REFER
8' LANDSCAPE
BUFFER ZONE
GRASS AREA
BELOW TREE, TYP
APPR.REVISIONS RECORD/DESCRIPTION
5
7
9
8
6
3
4
2
1
DATE DRAFTER CHECK
:DRAFTED
CHECKED
PROJ. NO
SCALE :
DATE :
:
:
UNAUTHORIZED ALTERATION OR
ADDITION TO THIS DOCUMENT IS A
VIOLATION OF THE NEW YORK STATE
EDUCATION LAW.
C.T. MALE ASSOCIATES
:
c
DWG. NO:
SHEET OF
PROJECT NUMBER:
C.T. MALE ASSOCIATES
Engineering, Surveying, Architecture, Landscape Architecture & Geology, D.P.C.
50 CENTURY HILL DRIVE, LATHAM, NY 12110 PH 518.786.7400
www.ctmale.com
COBLESKILL, NY · GLENS FALLS, NY · POUGHKEEPSIE, NY
JOHNSTOWN, NY · RED HOOK, NY · SYRACUSE, NY
23.3173
23.3173
23-0193
WOODLAWN CLUB
118, 121-125 WOODLAWN AVE
CITY OF SARATOGA SPRINGS SARATOGA, NEW YORK
2023
MARCH 30, 2023
1
FRANCIS G. PALUMBO
R.L.A NO. 001226
XREFS:CAD DWG. FILE NAME:CAD DWG. FILE NAME:DESIGNED SP_Rendering_Pkg Lot Woodlawn.dwgK:\Projects\233173\LD\Drawings-Maps\Presentations\SP_Rendering_Pkg Lot Woodlawn.dwgEXHIBIT D
GREENSPACE COMPARISION
MAC
MAC
FGP
1"=10'
SP-GS
1
NONE
BAR SCALE
1 inch = ft.
10 0 5 10 20
10
STORMWATER ANALYSIS
UTILIZING THE TR-20 METHOD IN HYDROCAD
GREEN SPACE COMPARISON:
EXISTING GREEN SPACE = 1,543 SF 0.04 ACRES (15.6%)
PROPOSED GREEN SPACE = 2,833 SF OR 0.07 ACRES (28.7%)
INCREASE OF 13.1% GREEN SPACE FROM EXISTING
MODELING SUMMARY:
STORM WATER RUNOFF MODELING WAS DONE FOR OUR PARCEL ONLY. A CURVE
NUMBER (CN) IS USED TO CHARACTERIZE THE RUNOFF PROPERTIES FOR A
PARTICULAR SOIL AND GROUND COVER. THE CN FOR GRAVEL IS 96 AND
ASPHALT IS 98; ANYTHING ABOVE A 95 IS CONSIDERED IMPERVIOUS. WE
TYPICALLY USE 98 ACROSS THE BOARD BUT IN THIS CASE WE HELD THE 96
FOR THE GRAVEL TO COMPARE.
THE PRE & POST FLOW RATE COMPARISON:
·10 YR: EXIST: 1.14 CFS PROPOSED: 1.12 CFS
·50 YR: EXIST: 1.70 CFS PROPOSED: 1.68 CFS
·100 YR: EXIST: 2.01 CFS PROPOSED: 2.00 CFS
SUMMARY:
A COMBINATION OF THE INCREASED GREEN SPACE AND THE REDUCTION IN
IMPERVIOUS AREA REDUCES THE RUNOFF CFS IN ALL STORM EVENTS
SCALE:
CROSS REFERENCE:
1" = 10'
EXISTING PARKING LOT1
SP-GS
NONE
SCALE:
CROSS REFERENCE:
1" = 10'
PROPOSED PARKING LOT2
SP-GS
NONE