Addendum 5 (Metropolitan WWTP Thickening Improvements

Solicitation No.

1886

Type / RFx

Invitation for Bids

Status

Issued

Level

city

Published Date

March 9, 2026

Due Date

May 14, 2026

NAICS Code

237110AI guide

Jurisdiction

City of Columbia, SC

State

South Carolina

Agency

City of Columbia, SC

ALL QUESTIONS REGARDING THIS SOLICITATION MUST BE SUBMITTED IN IONWAVE AS OUTLINED IN THE SOLICITATION PLEASE CONTACT THE PROCUREMENT DEPARTMENT DIRECTLY FORANY TECHNICAL QUESTIONS RELATED TO IONWAVE --- Q&A --- Q1: Can rigid inclusion support be an acceptable alternative to aggregate pier support if they are found to be a more economical/feasible form of ground improvement for the structures? A1: See Addendum 5 Submitted: 4/23/2026 11:33:30 AM (ET) Q2: The aggregate pier specification [Section 31 66 13.14] states that (4) modulus test are required. This more than is typically required for a project of this size. Can the required number of modulus tests be decreased to the amount that the aggregate pier design-build contractor feels is appropriate (likely 2 tests)? A2: See Addendum 5 Submitted: 4/23/2026 11:33:03 AM (ET) Q3: On behalf of Perry Fiberglass Products, Inc., please confirm if they can be added as a named supplier. Perry Fiberglass Products, Inc. is an established manufacturer of odor control systems and meet the specifications. A3: See Addendum 5 Submitted: 4/23/2026 09:34:01 AM (ET) Q4: Can we PLEASE have a bid extension? A4: Bid Extended to May 14, 2026 at 2:00 p.m. Submitted: 4/22/2026 02:39:48 PM (ET) Q5: We request that BioAir be named as an approved supplier in specification section 40 05 36.13_2.05.B.3.h for the FRP dampers to align with their odor control equipment proposal. A5: See Addendum 5 Submitted: 4/22/2026 10:48:44 AM (ET)

1. March 9, 2026Published
2. May 14, 2026Responses Due