Mason Farm Wastewater Treatment Plant Digester 2 Cleaning

Agency:	State Government of North Carolina
State:	North Carolina
Type of Government:	State & Local
NAICS Category:	221320 - Sewage Treatment Facilities 237110 - Water and Sewer Line and Related Structures Construction
Posted Date:	Feb 24, 2026
Due Date:	Mar 19, 2026
Solicitation No:	460-378-08A
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Contact information:	Please Login to View Page
Bid Documents:	Please Login to View Page

Solicitation Number:	460-378-08A
Project Title:	Mason Farm Wastewater Treatment Plant Digester 2 Cleaning
Description:	GENERAL INFORMATION The Owner is soliciting proposals from qualified Contractors to perform content removal, disposal, and cleaning on digester #2 at the Mason Farm Wastewater Treatment Plant. The Contractor is responsible for all aspects of the content removal, disposal, and cleaning. OWASA will inspect all work and accept or reject the work based on the attached specifications. A Pre bid meeting will be held at 2:00 PM March 4th, 2026 at 170 Old Mason Farm Road, Chapel Hill, NC 27517. OWASA will make the area available for visits by interested Contractors on a case-by-case basis between 8:00 AM and 3:00 PM. For scheduling, refer to contact information provided in this RFP.
Opening Date:	3/19/2026 2:00 PM
Posted Date:	2/25/2026
Status:	Open
Department:	ORANGE WATER & SEWER AUTHORITY


Solicitation Number * 460-378-08A	Department ORANGE WATER & SEWER AUTHORITY	Status Reason Open
Opening Date 2026-03-19T14:00:00.0000000	Posted Date * 2026-02-24T16:47:43.0000000Z	Primary Commodity Code Environmental safety services
Mandatory Conference/Site Visit — —	Special Instructions —	Solicitation Type * Select RFP IFB RFI
Owner David Moore
Description GENERAL INFORMATION The Owner is soliciting proposals from qualified Contractors to perform content removal, disposal, and cleaning on digester #2 at the Mason Farm Wastewater Treatment Plant. The Contractor is responsible for all aspects of the content removal, disposal, and cleaning. OWASA will inspect all work and accept or reject the work based on the attached specifications. A Pre bid meeting will be held at 2:00 PM March 4th, 2026 at 170 Old Mason Farm Road, Chapel Hill, NC 27517. OWASA will make the area available for visits by interested Contractors on a case-by-case basis between 8:00 AM and 3:00 PM. For scheduling, refer to contact information provided in this RFP.

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Orange Water and Sewer Authority

Carrboro, North Carolina

Mason Farm Wastewater

Treatment Plant Digester 2

Cleaning

ReqIsuseuset FdofroPrrBopidosal

February 2026

THIS PAGE INTENTIONALLY BLANK

Orange Water & Sewer Authority

OWNER:

ORANGE WATER AND SEWER AUTHORITY

REQUEST FOR PROPOSALS

Request for Proposals

For

Mason Farm WWTP Digester 2 Cleaning

February 23, 2026

ORANGE WATER AND SEWER AUTHORITY

Orange Water and Sewer Authority (the “Owner”) is soliciting proposals for the content

removal, content disposal, and cleaning of Digester #2 at the Mason Farm WWTP (the “Project”).

Please submit sealed responses in a prepared, sealed envelope and marked on outside of the

envelope:

Bill Rosa, Project Manager

Orange Water and Sewer Authority

400 Jones Ferry Road

Carrboro, NC 27510

Email: brosa@owasa.org

Logan Moses, Engineer

Brown and Caldwell

421 N. Harrington St, Suite 420

Raleigh, NC 27603

Email: lmoses@brwncald.com

Sealed responses will be accepted until 2:00 P.M. on March 19th, 2026.

ORANGE WATER AND SEWER AUTHORITY

REQUEST FOR PROPOSALS

I. GENERAL INFORMATION

The Owner is soliciting proposals from qualified Contractors to perform content removal,

disposal, and cleaning on digester #2 at the Mason Farm Wastewater Treatment Plant.

The Contractor is responsible for all aspects of the content removal, disposal, and cleaning.

OWASA will inspect all work and accept or reject the work based on the attached

specifications.

A Pre bid meeting will be held at 2:00 PM March 4th, 2026 at 170 Old Mason Farm Road,

Chapel Hill, NC 27517. OWASA will make the area available for visits by interested

Contractors on a case-by-case basis between 8:00 AM and 3:00 PM. For scheduling, refer to

contact information provided in this RFP.

II. PROJECT DESCRIPTION

The Mason Farm Wastewater Treatment Plant (MFWWTP) currently operates four

anaerobic digesters. A blend of thickened primary sludge and waste activate sludge is

passed through the anaerobic digesters where sludge goes through a temperature phased

digestion to produce Class A biosolids product. The four digesters are arranged in series

with biosolids passing through Digester 4 and 3 (temperatures heated between 137-140-

degree F) followed by Digester 2 and 1.

Anerobic Digester Tank No. 2 was originally constructed in 1979 with a diameter of 50ft,

side water depth of 23ft, and operating volumes of 700,000 million gallons to 1 MG per

month. The tank serves mainly as an equalization tank to accept transfers from Digester

No. 3 and transfers to Digester No. 1.

The scope of work includes unit prices for content removal and disposal as well as

cleaning of Digester 2. The foregoing description shall not be construed as a complete

description of all work required. Please refer to the attached specifications and reference

drawings for detailed project information and scope of work.

ORANGE WATER AND SEWER AUTHORITY

REQUEST FOR PROPOSALS

III. SUBMITTAL REQUIREMENTS

A. Company Information and Experience

1. History of company and years of experience, knowledge and understanding of the

project scope.

2. Location of office(s) which will be involved in the project.

3. Name, location and qualifications of Project Manager and other key personnel and

their availability and experience in similar type of work.

4. Proposed method of safely performing the work with minimal impact to plant

operations.

5. Identify three references and provide contact information. Two of the references

must be an application of similar work in municipal wastewater treatment plants.

This page summarizes the opportunity, including an overview and a preview of the attached documents.

* Disclaimer: This website provides information about bids, requests for proposals (RFPs), or requests for qualifications (RFQs) for convenience only and does not serve as an official public notice. Individuals who wish to respond to or inquire about bids, RFPs, or RFQs should contact the relevant government department directly.

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Mason Farm Wastewater Treatment Plant Digester 2 Cleaning

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