Plans 05/17/00 WED 1 1 : 5 9 FAX 503 b 9147 CAKLSUiv 1r L LL' CITY OF TIGARD '
A 4s' Approved .1 k
Conditionally Approved ( I
For only the work as described in:
PERMIT NO. "i 2 -env - "° 74)
See Letter to: Follow .1 I t
Attach
PROJECT MEMOR,� d : _�5A - sv Ii 'I k
By: ge Date: el w /0
TO: Robert Westlund General Contractor, Inc_ FROM: Timothy Blackwood, P.E.
11515 SW Durham Road Dennis Elton, El.
Tigard, Oregon 97224 -3476
DATE: May 17, 2000 '\ - PRpF S i
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PAGES: 2 52838 -37
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RE: Kaady Car Wash A OREGON 4
15450 SW 116"+ (Next Door) - -p " �g O
King City, Oregon �y 12 ' .
00001575 Y W B�p,G
CC: City of Tigard Building Department 1 EXPIRES t2 / 3 t/ a
This memorandum presents our recommendations for structural fill placement and compaction
to backfill the existing basement at the above site. An approximate plan map of the site is
shown in Figure A_ We understand the basement is located in a future parking area and the
area is to be paved after backfilling. Our recommendations are outlined below.
Demolition and Backfill Recommendations
1. The existing concrete basement walls should be removed and hauled off site. Care should be
taken to prevent damage to existing sewer and /or gas lines observed at the south side of the
basement. The basement floor should be demolished to provide adequate drainage.
Concrete debris does not need to be removed, provided large voids are not left after
demolishing �.nd the rubble is tracked to a well -keyed state by heavy equipment.
2. Complete exploratory test pits in the bottom of the excavation under the direction of the
geotechnical engineer. Two shallow test pits are anticipated, but this may vary depending on
actual findings of the test pits.
3. Plug existing drains or other abandoned piping with grout or concrete.
4. Place baekfill material on the well- keyed, prepared surface of the excavation. The walls of the
excavation. shculd be benched if sloughing occurs. Sloughed material may be used as backfill
only if it meets the following requirements_ Backfill should consist of dean, well- graded
granular material (crushed rock and sand) free of organics and deleterious material, with less
than 5% by weight passing the No. 200 sieve. Three - inch -minus material should be placed at
the first lift and subsequent lifts should be up to a maximum of 3 -inch material. The material
shall be approved by the geotechnical engineer prior to placing. Place in lifts no more than 1
foot thick (loose) when compacted with large, riding, compaction equipment, or 8 inches thick
(loose) when compacted with hand compaction equipment (e.g., jumping jack, plate
compactor).
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May 17, 2000
Kaady Car Wash, King City
CGT Job No G0001575
Page 1 of 2
5_ Compact the backfill to 90% of the maximum dry density as determined by the Modified
Proctor Method (ASTM 0-1557) below 3 feet below final subgrade elevation and to 95% of
Modified Proctor Method (ASTM D -1557) for the final 3 feet of fill placed_
Testing Program
1. Prior to placing the initial backfill lift, a geotechnical engineer should be present to observe the
recommended test pit explorations and the bottom of the basement to determine that
conditions are suitable to begin the backfill operation.
2. Field density tests shall be performed every 2 vertical feet of placed fill and at finished grade.
Density testing should conform to the nuclear density method ASTM 0-2922.
Attachment: Figure A
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Asphalt
Concrete Pad Curb
Asphalt
Sewer Line
35 Basement Gas Line Approximately SITE PLAN
120'
Kaady Car Wash - ling City
FIGURE A „ L $ 0
Concrete Pad iuur ; w *." 1
Concrete 05/12/00
Pad
Gutzon Geotsc nke!
CGTJobNo. P.O. Box 23814
G0001575 Tiparca &egos 97281
Asphalt
see,rait • LEGEND
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NOT TO SCALE
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MARTIN S. BURCK ASSOCIATES, INC.
2880 May Street, Hood River, OR 97031
Phone: (541) 387 -4422, Pt Id: (503) 977 -2401
e -mail: msbail@aol.com MBA
Geologic and Environmental Consulting Services
Rosie Day May 4, 2000
City of King City
15300 SW 116th Avenue
King City, Oregon 97224
Subject: Former Q Lube Structure
15450 SW 116th
King City, OR •
Dear Rosie:
On May 3, 2000, 1 inspected the basement portion of the partially demolished structure referenced
above with respect to the reported presence of water and petroleum hydrocarbons, I observed
approximately 0 inch of water on the concrete basement floor with a light iridescent sheen in several
places. I did not observed any distinguishable petroleum hydrocarbons as staining on the surface of
the concrete floor or on the surface of the water. Therefore, in consultation with the DEQ (Andree
Pollock, Manager of the UST Cleanup and Compliance Section)(personal communication, 5/4/2000),
we intend to pressure wash the concrete floor with hot water and remove the accumulated and
resulting liquid with a vacuum truck immediately prior to backfllling. I am confident that this action
will mitigate any future concerns regarding the potential contact of water with the concrete basement
floor. Please call me if you have any questions or require any additional information,
Sincerely,
Martin S. Burck Associates, Inc_
CkAS &/`CAZ,_
a y Burck, RPG
Registered Professional Geologist
cc: Chuck Kaady, Kaady Car Washes
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May 31, 2000
CITY OF TIGARD
Timothy Blackwood OREGON
PO Box 23814
Tigard, Oregon 97223
PERMIT NO: Site #2000 -00020
OWNER: Kaddy Car Wash
PROJECT ADDRESS: 15450 SW 116th
PROJECT DESCRIPTION: Fill and Compaction of existing foundation
TYPES OF SPECIAL INSPECTION: As setout on the enclosed form
The owner has notified us that he /she will retain your services to perform Special
Inspections in accordance with the provisions of the State Building Code, permit
documents and special inspection requirements.
The owner or the owner's agent must also confirm with you that they have
authorized you to do the special inspection work.
As the regulatory agency, the City requires that you do the following:
1. Submit copies of all inspection reports promptly to the building division,
Architect, engineer, and the contractor.
2. Maintain one copy of each field report at the job site.
3. Submit a final report at the completion of each category of work that you
Inspect. (See UBC Appendix Chapter 13 for soils special inspection final
report requirements.)
If you fail to comply with the above requirements, there may be cause for the City to
revoke your authority as special inspector for this job.
Should you have any questions, please call me at (503) 639 -4171 X 392.
Sincerely,
Ro ert D. Poskin, C.B.O.
Senior Plans Examiner
13125 SW Hall Blvd., Tigard, OR 97223 (503) 639 -4171 TDD (503) 684 -2772
CITY OF TIGARD
A Program for Inspection Services and/or Material Testing •
City of Tigard: Plan Ck. No. 5 -56C
Project Title: Kaddy Car Wash
Address: 15450 SW 116
Architect of Record: Sconzo/Hallstrom Phone: 425- 455 -3203
Address: 919 — 124 Avenue, NE — Bellevue, WA. 98005
Structural Engineer of Record: Phone:
Address:
Geo- Technical Engineer of Record: Timothy Blackwood Phone: 684 -3460
Address: PO Box 23814 - Tigard, Oregon , 97224
Provide the following information for the testing agency chosen to provide inspection services and/or
testing.
* Testing Agency: Timothy Blackwood Phone: 684 -3460
Address: PO Box 23814, Tigard OR. 97281
Geo- Technical Agency: Phone:
Address:
The owner certifies that the above noted Agency has been employed to conduct the special
inspections or observations required herein.
* "Notice" Special Inspection reports shall not preclude the need to have City of Tigard inspection
approval on all re -bar placement.
Signature of Owner /� Phone No. Date
/�// C 4 Z U ci,41 5 -51-1 /We
Pn t name Company name
The following is a list of special inspection and/or services required by the 1998 Oregon Structural
Specialty Code and Tigard Municipal Code 14.06.010 through 14.06.040.
The special inspections and/or testing services required for this project to be provided by the Testing
Agency, Structural Engineer or Geo - Technical Engineer of Record are as follows:
1. Fill
2. Compaction
•Special Inspectors for the Testing Agency shall be qualified, to the satisfaction of the Building Official,
for inspections of the particular type of construction or operation.
•Special inspectors shall observe the work assigned herein for conformance with the approved plans
and specifications and, submit copies of all inspection reports and, a final signed report in
accordance with OSSC, Section 1701.3 to the building official.