City of Columbia, Missouri
McBaine Water Treatment Plant Improvements
Construction Documents
Project Manual
Addendum No. 1
01/24/2024
HDR Project No. 10243777
HDR Engineering, Inc.
10450 Holmes Road, Suite 600
Kansas City, MO 64131
816-360-2700
MISSOURI CERTIFICATE OF AUTHORITY #: 000856
TO:
FROM:
OWNER:
SUBJECT:
MCBAINE WATER TREATMENT PLANT IMPROVEMENTS
CITY OF COLUMBIA, MISSOURI
ADDENDUM NO. 1
January 24, 2024
Prospective Bidders
HDR Engineering, Inc. (Engineer)
10450 Holmes Road, Suite 600
Kansas City, MO 64131
City of Columbia, Missouri
701 E. Broadway, P.O. Box 6015
Columbia, Missouri 65205
McBaine Water Treatment Plant Improvements
This Addendum is part of the Bidding Documents and the Contract Documents and modifies the original
Bidding Documents dated January 2, 2024, as indicated below. Acknowledge receipt of this Addendum in
the space provided on the Bid Form. Failure to do so may subject the Bidder to disqualification for award of
the associated Contract.
This Addendum consists of 10 pages and the attachments, if any, listed on the last page.
HDR Project No. 10243777
City of Columbia, Missouri
McBaine Water Treatment Plant Improvements
Addendum No. 1
00 00 01 - 1
01/24/2024
Addendum No. 1
ADDENDUM NO. 1 SEALS AND SIGNATURES
Ryan D. Saffels, PE
MO License No. 2002016728
Expires 12/31/2024
The seal and signature to the left applies to the
changes made via this Addendum for the Work in the
following divisions, sections, and Drawings of the
proposed Contract Documents:
01 71 23
40X101
50X104
50X901
David L. Wiseman, PE
MO License No. 025507
Expires 12/31/2024
The seal and signature to the left applies to the
changes made via this Addendum for the Work in the
following divisions, sections, and Drawings of the
proposed Contract Documents:
02 82 33
02S502
30S401
John S. Rickert, Architect
MO License No. 007020
Expires 12/31/2024
The seal and signature to the left applies to the
changes made via this Addendum for the Work in the
following divisions, sections, and Drawings of the
proposed Contract Documents:
08 31 00
09 96 00
HDR Project No. 10243777
City of Columbia, Missouri
McBaine Water Treatment Plant Improvements
Addendum No. 1
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01/24/2024
Addendum No. 1
Engineer’s seal and signature does not apply to the documents, or changes thereto, that comprise Division
00, Bidding and Contracting Requirements, except for revisions to provisions of prior Addenda that modify
the Specifications and Drawings.
It is a violation applicable laws and regulations governing professional licensing and registration for any
person, unless acting under the direction of the licensed and registered design professional(s) indicated
above, to alter in any way the proposed Specifications, Drawings, and Addenda for this Project.
CHANGES TO PRIOR ADDENDA
NONE
CHANGES TO INTRODUCTORY INFORMATION
NONE
CHANGES TO BIDDING REQUIREMENTS
NONE
CHANGES TO CONTRACTING REQUIREMENTS
NONE
CHANGES TO SPECIFICATIONS
1.01 SECTION 01 71 23 – Field Engineering:
A. REPLACE 01 71 23 – Field Engineering in its entirety WITH the attached 01 71 23 – Field
Engineering.
1.02 SECTION 02 82 33 – Hazardous Environmental Condition Abatement:
A. REPLACE Paragraph 1.1.A.1 in its entirety WITH the below paragraph: “Contractor shall
furnish and pay for testing to identify any hazardous environmental materials in areas affected
by demolition or work shown on the Drawings.”
B. ADD the below paragraph after 1.3.B.2
3.Hazardous material testing and survey: A plan detailing procedures, activities,
inspection, testing, monitoring, and supervision of hazardous material testing and survey
shall be prepared and submitted.
a. Survey and testing shall be conducted by a firm qualified to perform hazardous testing
in the State of Missouri.
1.03 SECTION 08 31 00 – ACCESS DOORS:
A. 3.2 SCHEDULES
1. Paragraph A Vault Access Door Schedule – DELETE door 10VAD-01 from the schedule.
2. Paragraph B Floor Access Door Schedule – DELETE the schedule in its entirety.
1.04 SECTION 09 96 00 – HIGH PERFORMANCE INDUSTRIAL COATINGS:
A. 3.1 ITEMS TO BE COATED
1. Paragraph A 1. Concrete – DELETE paragraphs a, b, and c in their entirety.
2. Paragraph B 2. Concrete – DELETE paragraph a in its entirety.
HDR Project No. 10243777
City of Columbia, Missouri
McBaine Water Treatment Plant Improvements
Addendum No. 1
00 00 01 - 3
01/24/2024
Addendum No. 1