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0 o O DAVID EVAnS FlnD ASSOCIATES, inc.
301 -116TH AVEnuE S.E. • SUITE 170 • BELLEVUE. WASHinGTon- 98004 • 206/455-3571
October 8, 1984 TAS004
Dick Winters
R. C. WINTERS & ASSOCIATES, INC.
17460 NE 67th Court
Redmond, WA 98052
Re: Routos Warehouse
Renton, Washington
Dear Dick,
As required by the City, we have redrafted the storm plan for the
Routos Warehouse onto an original mylar. Where possible, we in-
corporated as -built field information into this drawing. This
mylar has been made avilable to Jeff Harstad for his use in field
verification of as -built information and certification as needed.
A print is included for your information.
In addition, we have calculated the impact on the detention sys-
tem resulting from field changes. We calculate that full com-
pensation for the runoff bypassing the detention system can be
accomplished by changing the orifice to a 1 1/2 inch diameter
hole. This will require a field modification and a corresponding
change to the as -built mylar. Copies of the calculations are
enclosed.
Please let us know if you need additional assistance.
Very truly yours,
DAVID EVANS AND ASSOCIATES, INC.
Richard E. Lowe, P.E.
Associate
REL:bat
Enclosure
cc: Harstad Surveying
Thomas A. Sconzo
G� f y o{ �crn�i7
O 9(=
Ro
301 116TH RVEnUE S.E. SUITE 170
BELLEVUE, wp3HincTon 96004 206.455.3571
TRmnsmiTTAL
DATE
FILE_
TO 0N r,oro7t14.� PROJECT Ro�rog (�.�✓�,.t�rI-AV r
c l rr or- A':—ry N
SUBJECT
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ITEM
COPIES
DATE
DESCRIPTION
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BY-A'SS 1?-s2cyi
❑ AS YOU REQUESTED
❑ FOR YOUR INFORMATION
El FOR YOUR APPROVAL
❑ FOR YOUR REVIEW
❑ RETURN REQUESTED
❑ —
FROM
REMARKS
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