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MARK AREA BEFORE CLEARING
PLASTIC COVERING — BMR CS23
47, 322655
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47,322725
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302ft
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_-722.353786
300ft
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28' - 2"-
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PROPOSED (��
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MATERIAL
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DELIVERIES
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Federal way
WA 98013
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HARD SURFACES -
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200 SO FT addition ROOF- PROPOSED
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7,260 SO FT LOT SIZE
.02% OF LOT IS NEW HARD SURFACE.
Existing hard surfaces:
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2162 existing roof
822 existing drive way and walk
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2984 Total existing hard surfaces
OWN SPOUT
200 proposed hard so ft.
3184 sq ft total hard surface
43.8% of lot is hard surface.
Addition odds 252 gallons per any given rainfall evert, ( 200 proposed
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addition roof surface x .6 gallons per so ft == 120 x 2A rainfall intensity
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in/hr Seattle WA = 252.)
Existing stormwoter system drains into 4" solid PVC pipe around the
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periphery of the dwelling. Collecting at on one point and draining into a
infiltration trench on the south side of the property.
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THE PROPOSED WILL TIE INTO THIS SYSTEM AND be monitored of overflow
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during heavy rain fall.
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-BUFFER ZONE - BMPC102
47.322488
22 35379
47.322546
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