South Cobb Water Reclamation Facility Secondary Clarifier Rehabilitations

1. Introduction
   1.1. Summary

Cobb County (“County” or “Owner”) is issuing this solicitation for South Cobb Water Reclamation Facility Secondary Clarifier Rehabilitations. Submissions shall be received before 12:00 pm on Thursday, August 27, 2026, via the County's eProcurement Portal at https://procurement.opengov.com/portal/cobbcoga. Late submissions will not be accepted.

1.2. Timeline
Release Project Date: July 17, 2026
Question Submission Deadline: August 18, 2026, 5:00pm
Bid Submission Deadline: August 27, 2026, 12:00pm
2. Project Details
2.1. Important Instructions for Electronic Submittals

The Cobb County, GA is accepting electronic bid submissions. Bidders shall create a FREE account with OpenGov Procurement by signing up at https://procurement.opengov.com/signup. Once you have completed account registration, browse back to this page, click on "Draft Response", and follow the instructions to submit the electronic bid.

2.2. Scope of Work or Project Details

Please see the Attachments section for specifications and attachments.

3. Cost Schedule
   South Cobb WRF Secondary Clarifier Rehabilitations
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   Part 1 - Base Bid (Lump Sum)
   Line Item
   Bid Item
   Description
   Quantity
   Unit of Measure
   Unit Cost
   Total
   1
   1.01
   Project Initiation: Mobilization/Bonds/Insurance (4% of total lump sum)
   1
   LS
   2
   1.02
   Provide all equipment, labor, materials, tools, incidentals, and all other items required for the rebuilding the drive assembly for secondary clarifier SC-3, surface preparation and painting of the drive mechanism, and replacing the motor to the drive assembly complete in place, tested and ready for full operation, all in conformance with the Contract Documents.
   1
   LS
   3
   1.03
   Provide all equipment, labor, materials, tools, incidentals, and all other items required for the maintenance service for the drive assemblies for secondary clarifiers SC-1, SC-2 & SC-4, tested and ready for full operation, all in conformance with the Contract Documents.
   1
   LS
   4
   1.04
   Clarifier cleaning of SC-1, SC-2, & SC-4 and providing an independent inspection report for SC-2. Surface preparation and painting of the four secondary clarifiers (SC-1 thru SC-4) rake arms and A frames, effluent launders and steel supports, scum beach and supports, scum pipes, scum skimmers, walkway bridge, and sludge collection header, all in conformance with the Contract Documents.
   1
   LS
   5
   1.05
   Replacing four secondary clarifiers (SC-1 thru SC-4) inner and outer feed wells inclusive of surface preparation and painting, all in conformance with the Contract Documents.
   1
   LS
   6
   1.06
   Replacing effluent weirs and scum baffles and supports, and scum beach supports for the four secondary clarifiers (SC-1 thru SC-4), all in conformance with the Contract Documents.
   1
   LS
   7
   1.07
   Replacing rubber seals around the base of the influent feed shafts and the neoprene wipers on the bottom of the sludge collection headers for the four secondary clarifiers (SC-1 thru SC-4), all in conformance with the Contract Documents.
   1
   LS
   8
   1.08
   Replacing the two skimmer assemblies for secondary clarifier SC-3, all in conformance with the Contract Documents.
   1
   LS
   9
   1.09
   Replacing damaged L2-1/2"x2-1/2"-1/4" diagonal members for secondary clarifiers SC-1, SC-2, SC-3, and SC-4 rake arm mechanisms, re-welding of existing welds showing signs of fatigue or excessive corrosion, replacing any missing bolts and tightening any loose fasteners, and replacement of missing or damaged hardware, all in conformance with the Contract Documents.
   1
   LS
   10
   1.10
   Demolition of the aftermarket beams for secondary clarifiers SC-1 and SC-2, all in conformance with the Contract Documents.
   1
   LS
   11
   1.11
   Replacing the existing spray water header with new PVC spray water header with spray nozzles and supports and connecting the new water headers with existing hose bibbs at walkway bridge for the four secondary clarifiers (SC-1 thru SC-4), in conformance with the Contract Documents.
   1
   LS
   12
   1.12
   Replacing the threaded rod and backer plate at the yoke mechanism and re-adjusting and leveling rake arm on both sides of secondary clarifier SC-3 and replacing the steel center drive support structure (center torque cage) for secondary clarifier SC-3, in conformance with the Contract Documents.
   1
   LS
   13
   1.13
   Installation of davit cranes for the three scum pump stations for the secondary clarifiers, in conformance with the Contract Documents.
   1
   LS
   14
   1.14
   Startup, testing, and commissioning of the rehabilitation four secondary clarifiers (SC-1 thru SC-4), in conformance with the Contract Documents.
   1
   LS
   Total
   $0.00
   Columns
   South Cobb WRF Secondary Clarifier Rehabilitations
   Export This Table
   Extra Work Allowance
   Line Item
   Bid Item
   Description
   Quantity
   Unit of Measure
   Unit Cost
   Total
   15
   3.0
   Extra Work Allowance, for additional work as directed by the Owner. No payments shall be made to the Contractor for extra work unless specific work items are negotiated and authorized by the Owner, as described in the General Conditions. Allowance in the amount of:
   1
   Allow
   $250,000.00
   $250,000.00
   Total
   $250,000.00
   Columns
   SC WRF Secondary Clarifier Rehabilitations
   Export This Table
   Part 2 - Unit Price Items
   Line Item
   Bid Item
   Description
   Quantity
   Unit of Measure
   Unit Cost
   Total
   16
   2.1
   Concrete surface preparation and spalled repair surface for FOUR secondary clarifiers per Section 03 01 00.
   3200
   SF
   17
   2.2
   Concrete surface preparation and crack repair for FOUR secondary clarifiers utilizing polyurethane sealant per Section 07 09 00.
   300
   LF
   Total
   $0.00
   Columns
4. Vendor Questionnaire
5. Respondent Submittals (without Cost)*

Please Upload your COMPLETE response, including any and all required forms listed in the solicitation and the corresponding attachments.

(Do not upload cost information in here)

Response required
2. Will you be utilizing Surety2000 for your bid bond?
Yes
No
*Response required
When equals "Yes"
2.1. When "equals" yes

Please enter your Bid Bond information from Surety2000 below.

Bond ID

Vendor ID
Don't have a bid bond yet? Login or register at Surety2000 to create one using the following information for this project:
Project ID: T3028  
Bid Security: 5%  
When equals "No"
2.2. When "equals" no

Please upload your Bid Bond Document here if not using Surety2000.

3. I certify that I have read, understood and agree to the terms in this solicitation, and that I am authorized to submit this response on behalf of my company.*
   Please confirm
   *Response required
4. Attachments
   Main Documents
     T3028 Bid Document
     Section 00 43 13 (Bid Bond)
     T3028 - Drawings
   Supporting Attachments
   No attachments were included

Attached documents:
• T3028 Bid Document
• Section 00 43 13 (Bid Bond)
• T3028 - Drawings