Plans (7) 17
J.H. SIGMUND CONSULTING ENGINEER, INC.
,.r 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: .. m Drain Water Quality ale
Fanno Creek Business Par ' S Warehouse
14865 S.W. 74th Avenue
SDR 98 -0019
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.
�9 PIa 44(P�a \
G IN
Sincerely, `�� 14,057
�I. OREGON
4 i
`j ` •
- 4 18 :.. 0
• 11 2s, -)
.H. Si: Ad PE, PLS
SW Canyon Lane, Suite 402 Phone: 503 -292 -5825
Portland, Oregon 97225 Fax: 503 -291 -1613
EXHIBIT MAP
FOR
GALE NELSON
IN THE NE 1/4 OF SEC. 12, T.2S R.1 W, WJ
CITY OF TIGARD, WASHINGTON COUNTY, OREGC
SEPTEMBER 9, 1999
..r 1 ■
0 5 10 15 30
SCALE: 1" = 10'
END OF SWALE
AT ROCK
133.47' 132.33'
z
\ I 13 .30'
m .
LL
M I 141.30'
0
0 132 52' ' m
~ 1 2. 1' m
M
1 '3.89 Y
(J M
co L.L.
M 0
•
a
0
I
141.34'
M
w
0
32. 8' ~
13'.7 '
w m
134.05' r, `m., 17 CASWELL
co
H ERTEL ,
SURVEYORS INC.
S Y 6120 S.W. LOMBARD AVE.
co
co
(-4j - BEAVERTON, OREGON 97008
141.35' (503) 644 -3179
a
0 13'.93'I
1 , 2. 3'
y 134.33' I
i
w .
M o REGISTERED
I PROFESSIONAL
LAND SURVEYOR
1 3.1 ' 141.55' 4,-,z1.,ZZI-9-9
134.63', OREGON
1 :3.17' JULY 18, 1980
ALBERT HERTEL
1 - \:,, 1896 J
co 4 r EXPIRES 6/30/01
c
M co
140.86'
134.47' 131.36'
/
to 1 • :' /
0
Y
m I
0
0
,,, NOTES
Li
y 1. ONE HALF FOOT CONTOUR INTERVALS
a. n r s z
co m 2. VERTICAL DATUM BASED ON ELEVATION
wo TRANSFERED FROM A 5/8 INCH IRON
ROD AT THE P.T. OF S.W. 74TH AVE.
o o T.B.M. =137.86' (STA. 10 +00)
CO F-
01
Cn
134.51' X 133`'
3'9
141.51'
INVERT ELEVATION i
OF A 14' PLASTIC ■
PIPE =133.28' `. `.
DIRECTION OF PIPE `.d
IS ASSUMED
SZ4I
JOB No. 5621