Report Bend Office (541)330-9155
Geotechnical ice (503)601-8250
(541)345-0289Carlson Testing, Inc. Eugene Office
Salem Office (503)589-1252
Tigard Office (503)684-3460
Special Inspection
FINAL SUMMARY LETTER
Date: October 9, 2019
Job#: T1805750
City of Tigard
13125 SW Hall Blvd
Tigard, OR 97223-8199
Attn: Building Division
Re: Project Name: Durham AWWTP—Dewatering Centrifuge Replacement (6893)
Address: 16060 SW 851h Ave. —Tigard, OR
Permit#: BUP2018-00130
Per Chapter 17, Section 1704.1.2 of the International Building Code(IBC), we have performed special inspection of the
following item(s) per our inspection reports only:
Adhesive Anchors
All requested inspections and tests were performed and reported according to the requirements of project documents and
to the best of our knowledge, the work was in conformance with the approved plans and specifications, approved change
orders and applicable workmanship, provisions of the State Building Code and Standards, as well as the structural
engineer's design changes, approvals and verbal instructions.
Our construction inspection and testing services were provided and intended to help reduce the risk of construction
defects, deficiencies or omissions that arose during and after construction. Our services do not constitute a warranty or
guarantee of any type. Even with diligent construction monitoring and testing, construction defects, deficiencies or
omissions in the contractors work may exist. It is the contractor's responsibility to perform their work in accordance with
the approved construction documents.
CTI has provided its professional services with the degree of care and skill currently exercised under similar
circumstances by members of its profession in the same locale. Statements made in our reports are based on technical
judgments and should not be construed to be conclusive representations of fact. Our reports pertain to the material
tested/inspected only.
CTI's services did not include responsibilities related to determining, supervising, implementing or controlling the means,
methods, techniques, sequences or procedures of the construction or evaluating or reporting job conditions related to
health, safety or welfare.
Information contained herein is not to be reproduced, except in full, without prior authorization from this office. If there are
further questions regarding this matter please do not hesitate to contact this office.
Respectfully submitted,
CARLSON TESTING INC.
Stevcrr'd -Leech----
Project Manager
SW L/jng
cc: CLEAN WATER SERVICES(DURHAM)-MICHAEL IDEHARA
CITY OF TIGARD BUILDING DIVISION-WALTER'CHIP'BARNETT
JACOBS ENGINEERING GROUP INC-JAMIE DOOLEY
MCCLURE&SONS INC-SAM LOEUNG
MCCLURE&SONS INC-KYLE HANSEN
P:\Projects\General\2018\T1805750110-09-19 Final Letter.doc Updated 11/30/11
STRUCTURAL OBSERVATION REPORT:
FINAL CLOSEOUT REPORT CWS PROJECT NO. 6893
Project Final Structural Observation Summary
Project: Durham Dewatering Centrifuges Replacement
Structural Observations By: Luke Scoggins, SE, PE of Jacobs
(Final Walkthough Only. Performed via
Received Photos)
Date: 13 December 2019
Permit Numbers: BUP2018-00130
Contractor: McClure and Sons, Inc.
Comments: Structural observations have been completed for the above listed facilities on this
project as required by Section 1704 of the 2014 Oregon Structural Specialty Code and per the
Statement of Special Inspection Plan shown on the Drawings. To the best of my knowledge, the
construction conforms to the requirements of the contract documents and all reported deficiencies have
been successfully resolved.
The above statement is based on:
• One structural observation for final conditions based on received photographs.
• Special Inspection reports, including Carlson Testing, Inc. final summary letter dated October
09, 2019.
• Contractor submittals, deferred submittals, and requests for clarification.
SE/PE Stamp:
(71CTUp,4
PROP4e
76316PE .•
Digital Signature
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SIGNED: December 13,2019
EXP.06-30-2020
(8.1) REV 10/95 FORM 21A