HomeMy WebLinkAboutMaplewood WTP Media - WTR-27-3748 Adden No. 1 -8-9-2022
Maplewood WTP Filter Media Replacement ADDENDUM NO. 1
WTR-27-3748 Adden No. 1\ Page 1 of 2 August 10, 2022
MAPLEWOOD WATER TREATMENT PLANT FILTER MEDIA
REPLACEMENT
ADDENDUM No. 1
Project No. WTR-27-3748
CAG-22-244
Date of Addendum Issue: August 10, 2022
Due Date for Bids: 2:00 pm on August 16, 2022 (no change)
Date of Bid Opening: 3:00 pm on August 16, 2022 (no change)
To: ALL PLAN HOLDERS AND/OR PROSPECTIVE BIDDERS
The following changes, additions, and/or deletions are hereby made a part of the project bid
documents for the Maplewood Water Treatment Plant Filter Media Replacement Project and
shall have the same effect as if set forth therein. Bidders shall acknowledge receipt and
acceptance of this Addendum No. 1 by signing this addendum and submitting with the bid.
Failure to acknowledge receipt of this Addendum may result in your bid proposal being
disqualified.
TECHNICAL SPECIFICATIONS
A. Technical Specification Section 01 10 00 SUMMARY
1. Paragraph 1.2C is removed and replaced with the following:
C. Prosecution of the Work: The Contractor shall not commence the Work until
on or after October 1, 2022. The Work must be completed by March 31, 2023.
B. Technical Specification Section 46 61 15 GRANULAR ACTIVATED CARBON
1. Paragraph 1.4B.3 is removed.
2. Add new Paragraph 1.4G that reads as follows:
G. GAC Sample: A sample of the GAC material that was loaded into the delivery
truck must be provided to the Owner separately for independent analysis.
Maplewood WTP Filter Media Replacement ADDENDUM NO. 1
WTR-27-3748 Adden No. 1\ Page 2 of 2 August 10, 2022
3. Paragraph 2.2F – the H2S Capacity requirement is removed from the GAC Physical
Properties table.
4. Paragraph 3.4C is removed and replaced with the following:
C. GAC Media Sampling and Testing:
1. The Contractor shall be responsible for sampling and testing the GAC
media to be furnished for this project for Pre-Shipment Verification.
2. A sample of the GAC material that was loaded into the delivery truck
must be provided to the Owner separately for independent analysis.
3. For pre-shipment verification, GAC analyses shall, at a minimum, consist
of the following as described in ANSI/AWWA B604:
a. Mesh size confirmation,
b. Uniformity coefficient,
c. Effective size (mm),
d. Apparent density (g/cc),
e. Iodine number (mg/g),
f. Total Ash (percent),
g. Moisture weight (percent),
h. Abrasion number
This Addendum consists of two (2) pages.
ALL OTHER REQUIREMENTS OF THE CONTRACT DOCUMENTS REMAIN IN EFFECT
Sincerely,
Katie Nolan, P.E.
Civil Engineer III (Project Manager)
City of Renton
All Bidders must sign this Addendum No. 1 in the space provided below and attach
the signed Addendum No. 1 to the Formal Bid Proposal.
Signature: __________________________________ Title:_______________________
Company: __________________________________ Date:_______________________