Purchase of 108-inch Slide Gates for the Lanier Filter Plant

Location:	Georgia
Posted:	Apr 20, 2026
Due:	Apr 27, 2026
Agency:	Gwinnett County
Type of Government:	State & Local
Category:	30 - Mechanical Power Transmission Equipment 46 - Water Purification and Sewage Treatment Equipment 56 - Construction and Building Materials
Solicitation No:	BL044-26 INV
Publication URL:	To access bid details, please log in.

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BL044-26

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February 9, 2026

INVITATION TO BID

BL044-26

The Gwinnett County Board of Commissioners is soliciting competitive sealed bids from qualified

suppliers for the Purchase of 108-inch Slide Gates for the Lanier Filter Plant.

Bid Submittal Date and Location:

Bids should be typed or submitted in ink and returned in a sealed container marked on the outside

with the BL# and Company Name. Sealed Bids will be received until 2:50 P.M. local time on April

22, 2026, at the Gwinnett County Financial Services - Purchasing Division – 4th Floor Charlotte J.

Nash Building, 75 Langley Drive, Lawrenceville, Georgia 30046. NOTE THAT THE PURCHASING

DIVISION HAS TEMPORARILY RELOCATED. ALL BIDS MUST BE SUBMITTED AT THIS LOCATION.

Any bid received after this date and time will not be accepted. Bids will be publicly opened and read

at 3:00 P.M. The bid opening will be virtual ONLY. To access the bid opening virtually, visit the

following link

https://gwinnettgov.webex.com/gwinnettgov/j.php?MTID=mc697592cf9527509cef259e80be92f46

or dial 1-408-418-9388, and enter Conference ID 2333 019 2099. Apparent bid results will be

available the following business day on our website www.GwinnettCounty.com.

Pre-Bid Substitutions:

Submit requests to include products of Manufacturer’s not listed as approved Manufacturers in Section

01 3300 “Submittal Procedures” to Purchasing no later than 3:00PM, February 26, 2026. Provide all the

information required for a substitution including but not limited to technical data sheets, proof of valves

performance in wastewater treatment environment, and any other documentation to show equivalence.

Gwinnett County Purchasing will issue Addenda as appropriate if any of the proposed substitutions to

the Manufacturer’s list are accepted or denied. A Bid submitted with manufacturers not included in the

manufacturers list, except as modified by Addenda, will be considered nonresponsive.

Instruction on Submitting Questions:

Questions regarding bids should be directed to Anna West, Purchasing Associate II, at

Anna.West@GwinnettCounty.com or by calling 770-822-7862, no later than 3:00 P.M. on April 3, 2026.

Bids are legal and binding upon the vendor when submitted. All bids should be submitted in duplicate.

Successful contractors will be required to meet insurance requirements. The Insurance Company

should be authorized to do business in Georgia by the Georgia Insurance Department and must have an

A.M. Best rating of A-7 or higher.

Gwinnett County does not discriminate on the basis of disability in the admission or access to its

programs or activities. Any requests for reasonable accommodations required by individuals to fully

participate in any open meeting, program or activity of Gwinnett County Government should be directed

to the ADA Coordinator at the Gwinnett County Justice and Administration Center, 770-822-8165.

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The written bid documents supersede any verbal or written prior communications between the parties.

Award will be made to the contractor(s) submitting the lowest responsive and responsible bid.

Gwinnett County reserves the right to reject any or all bids to waive technicalities and to make an award

deemed in its best interest. Bids may be split or awarded in entirety. Gwinnett County reserves the

option to negotiate terms, conditions and pricing with the lowest responsive, responsible vendor(s) at

its discretion.

Award notification will be posted after award on the County website, www.GwinnettCounty.com and

companies submitting a bid will be notified via email.

We look forward to your bid and appreciate your interest in Gwinnett County.

Anna West

Purchasing Associate II

The following pages should be returned in duplicate as your bid:

Bid Schedule, Pages 6-8

References, Page 9

Contractor Affidavit and Agreement, Page 10

Code of Ethics, Page 11

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The intent of this solicitation is to procure four (4) replacement 108-inch slide gates for the Clearwell junction box,

flow diversion structure, and overflow structure at the Lanier Filter Plant (LFP).

The Department of Water Resources (DWR) has been experiencing issues with several large 108” slide gates in the

finished water storage system at LFP that do not sufficiently seal when closed. This has resulted in an inability to

isolate several major pieces of equipment for operational and maintenance purposes. DWR has performed an

assessment of the existing equipment and identified the following slide gates as needing replacement:

 Clearwell Junction Box –The Clearwell junction box has one 108” Rodney Hunt slide gate on the header

leading to Clearwells No. 1 and No. 2 and is used to divert finished water to the different clearwells.

 Flow Diversion Structure – Two HydroGate 108” slide gates, one on the line leading to the Clearwell junction

box and one on the line leading to Clearwell No. 5.

 Overflow Structure – One HydroGate 108” slide gate on the line leading from Clearwell No. 5.

The gates will be installed by a contractor yet to be determined.

SCOPE:

1. The replacement gates should meet the AWWA standards and design criteria and be able to be installed in the

locations of the existing gates after they have been removed with minimal structural or anchor bolt

modifications and minimal modifications to the existing operators. Acceptable manufacturers are:

Rodney Hunt Co.

H. Fontaine, Ltd.

HydroGate Corp.

Waterman.

BNW Zero-Leakage.

Or Pre-Approved Equal.

2. The following gates are to be procured:

One 108” slide gate on the Clearwell junction box.

Two 108” slide gates on the flow diversion structure.

One 108” slide gate on the overflow structure.

3. The replacement gates should be operated by the existing electrical operators.

4. Drawings showing the location of the gates and the installation details are provided in Attachment 1.

5. The gate manufacturer should design the gates, frames, seals, supports and stems to withstand the full water

pressure on either side of the gate when only one side is drained.

6. The gate manufacturer should review and confirm that the existing anchor bolts can be reused. The new

stems (diameter, thread and pitch) should be compatible with the existing actuators and existing stems can

be attached to the replacement gates.

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7. The gate manufacturer should provide confirmation that the existing gate and stem support arrangements

have been checked and are adequate for installation of the replacement gates and can be operated using the

existing electrical operators without having to move them.

8. Replacement gates should not exceed the allowable leakage as per AWWA C560.

9. Shop drawings showing locations and details of anchor bolts should be provided.

10. The gate manufacturer should provide all support/bracing elements and materials necessary for the proper

installation, support and performance of the gates with exception of the anchor bolts. Any new anchor bolts

should be supplied and installed by the installation contractor in accordance with the gate and anchor

manufacturers’ requirements.

11. If required, the Owner may be able to facilitate a post bid inspection to enable the manufacturer to undertake

any onsite measurements necessary for the design and support of the replacement gates prior to preparing

the shop drawings. Note that access into the facility vaults/structures are considered as confined spaces.

Manufacturers will be required to provide appropriate PPE for their staff. Confined space access and

monitoring equipment will be provided by the Owner.

12. Drawings of the facilities, existing gate locations and gates shop drawings are provided in Attachments 1, 2

and 3 to assist the equipment manufacturer in assessing the design and installation requirements of

replacement gates to suit existing conditions.

Bids are requested for the following:

1. Supply of all information requested on this bid.

2. Complete design of replacement gates, frames, stems (as applicable), supports and any minor modifications

to enable installation after removal of the existing gates.

3. Manufacture and assembly of gates and components.

4. Submission of specified submittals for approval prior to commencing manufacture.

5. Provide a manufacturing and delivery schedule and provide monthly progress updates.

6. Coordination and delivery to Lanier Filter Plant, 2590 South Water Works Road, Buford, GA 30518.

7. Site visit to confirm any measurements prior to preparation of the shop drawings.

8. Assessment of the existing anchor bolt and stem mounting arrangements to confirm they are adequate for the

replacement equipment. If in the opinion of the manufacturer the existing anchors and support are not

considered acceptable, design of any modifications, and provision of materials (except the anchor bolts)

necessary for the modifications. Replacement anchor bolts should be located at least 6” away for the existing

bolts. Any replacement anchors should be supplied and installed by the installation contractor.

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9. Provide start up assistance to the installation contractor (not yet appointed).

10. Provision of Manufacturer’s Warranty.

11. Provision of two hard copies and one electronic copy (in searchable PDF format) of Operating and

Maintenance instructions for all components, including shop drawings of equipment, spare parts list,

preventative maintenance schedule, and troubleshooting information.

12. Supply of specified spare parts and special tools for future maintenance.

Drawings and photographs of the various facilities are provided in the Attachments and the following specifications

are applicable:

SPECIFICATIONS:

Equipment shall comply with the following specifications:

Section 01 43 33 – Manufacturer’s Field Services

Section 01 78 23 – Operation and Maintenance Data

Section 01 88 15 – Anchorage and Bracing

Section 01 91 14 – Equipment Testing and Facility Startup

Section 05 05 19 – Post-Installed Anchors

Section 35 20 16.26 – Cast Iron Slide Gates

ATTACHMENTS

Attachment 1: Drawings

Attachment 2: Existing Gate Schedule and Drawings

Attachment 3: Photographs of Existing Installation

The following information sheets should be submitted with the bid:

1. Make, model, and weight of each component.

2. Manufacturer’s catalog information, descriptive literature, specifications, and materials of construction.

3. Complete description of gates, frames, stems, gaskets and other ancillary items.

4. Plan and section views of the gates, anchor bolt locations and dimensional tolerances required for installation.

5. A complete listing of materials for each gate component.

6. Drawings of each gate size.

7. Confirmation that the design will enable the gates to withstand and seal with water on one side only.

8. Typical anchor bolt mounting details.

9. Manufacturer Certificate of Compliance with materials specifications should be submitted prior to shipment of the

equipment. The certificate should certify that materials, manufacture, and final product conforms to or exceeds specified

requirements and intent for which the product will be used. Submit supporting reference data, affidavits, and certificates

as appropriate. The certificate may reflect recent or previous test results on material or product, acceptable to the

Engineer.

This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.

Purchase of 108-inch Slide Gates for the Lanier Filter Plant

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