HomeMy WebLinkAboutExisting Stormwater Contributory Area Plan (6.6.23)EXISTING CONTRIBUTORY AREA GROUNDCOVER CALCULATIONS
SUBCATCHMENT
#
TOTAL
AREA (SF±)
GROUNDCOVER
TYPES
CURVE
NO.
SUB -AREA
BY TYPE (SF±)
WEIGHTED
CURVE NO.
1
100,376
WOODS, FAIR HSG A
36
74,376
26,000
38
WOODS GRASS COMB. FAIR HSG A
43
2
30,064
WOODS, FAIR HSG A
36
25,064
5,000
37
WOODS/GRASS COMB. FAIR HSG A
43
3
230,874
WOODS FAIR HSG A
36
175,874
55,000
38
WOODS/GRASS COMB., FAIR HSG A
43
4
115,350
WOODS, FAIR, HSG A
36
90,350
25,000
38
WOODS/GRASS COMB. FAIR HSG A
43
5
19,999
WOODS, FAIR, HSG A
36
15,999
4,000
37
WOODS/GRASS COMB., FAIR, HSG A
43
6
24,480
WOODS, FAIR, HSG A
36
19,480
5,000
37
WOODS/GRASS COMB., FAIR, HSG A
43
CONTRIBUTORY AREA LEGEND
11-1 = EXISTING SUBCATCHMENT AREA
Al = EXISTING SUBCATCHMENT DISCHARGE / LOW POINT
— — — — — = TIME OF CONCENTRATION PATHWAY
= PRE -DEVELOPMENT CONTRIBUTORY AREA BOUNDARY
X 1L34 r_Al31 iivkj3rvi URHUC
/ PO 24x5 PROPOSED SPOT GRADE
Q/ _w_ WATER SERVICE LINE
—E— UNDERGROUND ELECTRIC SERVICE
TP
TEST HOLE / BORING LOCATION
ST SEPTIC TANK
Pj `off DB DISTRIBUTION BOX
Top of Mass Highway Bound SAS SOIL ABSORPTION SYSTEM
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Mass. Coord. System: Reserve RESERVED FOR FUTURE
N: 2720847.75
E: 1006864.30 � UTILITY POLE
NAVD88 Datum: ® CATCH BASIN
az Qa" EL=53.4± 27 FIRE HYDRANT
/ a z 0 DRAINAGE MANHOLE
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p(CLTOCL) _---_ v ` Paved —X—X— LIMIT OF WORK
m f-401.09' TO HOCKANO — —� — — � _ Drive FENCE
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Top of Concrete Bound
Mass. Coord. System:
N: 2720127.39
E: 1007783.51
NAVD88 Datum:
EL=29.1±
0 50 100 150
SCALE 1" = 50'