Correspondence (163) APR -27 -00 THU 11:27 LAND TECH INC 503 291 1613 P.01
S/f// 7'0a0 arY
.H. SIGMUND CONSULTING ENGINEER, INC.
CIVIL ENGINEERING
LAND SURVEYING
September 10, 1999
JIM FUNK, Plans Examiner Supervisor
HAP WATKINS, Inspection Supervisor
City of Tigard
13125 SW Hall Blvd.
Tigard, Oregon 97223 •
Re: Storm Drain Water Quality Swale
Fanno Creek Business •Park/KNHS Warehouse
14865 S.W. 74th Avenue
SDR 98 -0019 5 ti letgi v2
Gentlemen,
This letter is to certify the completion of construction of the Storm Drain Water Quality Swale in
the above noted project. Caswell/Hertel Surveyors Inc_ has completed an as -built survey of the
swale and submitted the results to me. My review of this survey indicates that the length,
longitudinal slope, bottom width and side slopes all substantially comply with the design criteria
and will therefore function as intended.
Included please find a copy of the above noted survey for your records.
Please respond as soon as possible as the Owner is anxious to seed the swale in order to minimize
any possible erosion.
Please do not hesitate to call if you have any questions or comments.
Sincerely, ` , C.4 z ti
Ri 4 i , 14,057 t
OREGOli
.H. Si d PE, PLS Sh SS�.
Portland, SW C.3-0,-4. I nnc St.t.it 402
Portland, Oregon 97225
Phone: 503 - 292.3825
Fax: 503 -291 -1613