Wastewater Treatment Plant Expansion


Walterboro Wastewater Treatment Plant Expansion Phases I & II

City of Walterboro

Walterboro, SC 



Sealed Bids for the construction of the Walterboro WWTP Expansion Phases I & II will be received by the City of Walterboro in Council Chambers at the Walterboro City Hall located at 242 Hampton Street, Walterboro, SC 29488, until 2:00 pm local time on March 31, 2023, at which time the Bids will be publicly opened and read.  The Project consists of constructing an expansion of the Walterboro Wastewater Treatment Plant (WWTP) from 2.64 MGD to 5.625 MGD with a new screening chamber, new influent pumping station, new grit removal system, improvements to existing Sequencing Batch Reactor (SBR) Nos. 1-3, addition of new SBR Nos. 4 & 5, new tertiary filters, new UV disinfection, new cascade post aeration, repurposing existing flow equalization basin as Aerobic Digester No. 2, addition of Sludge Screw Press No. 3, new septage grit removal system, and related items.  


Bids will be received for a single prime Contract.  Bids shall be on a lump sum basis, with alternate bid items as indicated in the Bid Form.


The Issuing Office for the Bidding Documents is Hybrid Engineering, Inc., 7400 Irmo Drive, Columbia, SC  29212, Tel.: 803.407.0472, Fax: 803.407.0473, Contact: Susan C. Clary, E-mail: sclary@hybrideng.com.    Prospective Bidders may examine the Bidding Documents at the Issuing Office on Mondays through Fridays between the hours of 8 a.m. and 5 p.m. and may obtain copies of the Bidding Documents from the Issuing Office as described below.


Bidding Documents also may be examined at the local iSqFt Plan Room; the office of the City of Walterboro, 242 Hampton Street, Walterboro, SC 29488, on Mondays through Fridays between the hours of 9 a.m. and 4 p.m.


Printed copies of the Bidding Documents may be obtained from the Issuing Office, during the hours indicated above, upon payment of a deposit of $250 for each set.  Checks for Bidding Documents shall be payable to Hybrid Engineering, Inc.  Upon request and receipt of the document deposit indicated above, the Issuing Office will transmit the Bidding Documents via delivery service.  The date that the Bidding Documents are transmitted by the Issuing Office will be considered the Bidder’s date of receipt of the Bidding Documents.  Partial sets of Bidding Documents will not be available from the Issuing Office.  Neither Owner nor Engineer will be responsible for full or partial sets of Bidding Documents, including Addenda if any, obtained from sources other than the Issuing Office.


Bid security shall be furnished in accordance with the Instructions to Bidders.


A pre-bid conference will be held at 10 a.m. local time on March 14, 2023 in Council Chambers at the Walterboro City Hall located at 242 Hampton Street, Walterboro, SC.  The Walterboro WWTP, located at 777 Gervais Street in Walterboro, will be available for open house visits immediately after conclusion of the pre-bid conference. Attendance at the pre-bid conference and visits to the Walterboro WWTP are highly encouraged but are not mandatory.



This project will be partially funded with Federal funds from the United States Department of Commerce, Economic Development Administration and therefore is subject to the Federal laws and regulations associated with that program.


Owner: City of Walterboro

By:          Jeff Molinari

Title:      City Manager

Date:     March 1, 2023


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