Mason Farm Wastewater Treatment Plant Digester 2 Cleaning
| Location: | North Carolina |
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| Posted: | Feb 24, 2026 |
| Due: | Mar 19, 2026 |
| Agency: | State Government of North Carolina |
| Type of Government: | State & Local |
| Category: |
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| Solicitation No: | 460-378-08A |
| Publication URL: | To access bid details, please log in. |
| 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 |
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Solicitation Number
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460-378-08A
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Department
ORANGE WATER & SEWER AUTHORITY
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Status Reason
Open
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Opening Date
2026-03-19T14:00:00.0000000
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Posted Date
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2026-02-24T16:47:43.0000000Z
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Primary Commodity Code
Environmental safety services
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Mandatory Conference/Site Visit
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Special Instructions
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Solicitation Type
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Select RFP IFB RFI
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Owner
David Moore
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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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Attachment Preview
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.
1
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.
2
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.
3
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