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MWWTP Effluent FM Surge & Transient Design Build Services (UN 1282)

Active
27-002State & Local

Contract Overview

Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.

AI Contract Overview

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The Mattawoman Wastewater Treatment Plant (MWWTP) in Charles County, Maryland, requires turn-key design-build services to manage force main surge and transients. Following a project that increased the effluent pump station's design peak flow to 60 million gallons per day, the County is concerned that cyclical pump operations and potential pump trips could damage the 50-year-old, 54-inch diameter prestressed concrete cylinder pipe and the existing air release valve. The project involves the design and construction of a new 40-foot diameter welded steel standpipe with separate influent and effluent pipes, including a welded steel roof cover, internal ladders, safety cages, and an overflow system. Key technical requirements include the creation of a water hammer model using Bentley HAMMER software to simulate various pump trip events and adherence to NACE II or higher qualifications for the agent. The procurement process is managed by the DPW Capital Project Management office, with proposals evaluated based on a combination of team qualifications, key personnel experience, and proposed price. The project timeline allows for a design phase of up to 270 consecutive calendar days, with construction starting within 270 days of the Notice to Proceed and reaching substantial completion within 420 days of the construction start date. Contractors must provide a 5 percent bid bond, as well as performance and labor and material bonds for 100 percent of the contract price. Additionally, the design-builder must maintain professional liability insurance of at least 2 million dollars per occurrence and aggregate, and all work must comply with ADA standards and prevailing wage requirements.

General Info

Design-build services for a new surge standpipe at Mattawoman Wastewater Treatment Plant.

Agency

Maryland → DPW - Capital Project Management

NAICS

237110 - Water and Sewer Line and Related Structures Construction

Place of Performance

MD, USA

Set-Aside

NONE

Documents

32

86-14894 Record Drawings - Mattawoman WWTP

PDF, High priority: read this first11 pages · specifications
High

Closed Loop System Improvements at the Mattawoman WWTP - Contract No. 12-03

PDF, High priority: read this firstspecifications
High

ITB #27-002 - MWWTP Effluent FM Surge & Transient Design Build Services

PDF, High priority: read this firstsow
High

Mattawoman WWTP Effluent Force Main Standpipe Geotechnical Report

PDF, High priority: read this firstspecifications
High

MWWTP Effluent FM Surge & Transient Design Build Services (UN 1282)

PDF, High priority: read this firstrfp
High

MWWTP Effluent PS Force Main Surge Management System Construction - Bridging Documents

PDF, High priority: read this first8 pages · specifications
High

MWWTP PS Site Plan - Charles County Sanitary District No.

PDF, High priority: read this firstspecifications
High

Price Brothers Company Laying Schedule - Charles County, MD

PDF, High priority: read this firstspecifications
High

Project 27-002: Mattawoman WWTP Effluent PS Force Main Surge Management System Technical Specifications

PDF, High priority: read this firstspecifications
High

Proposed Site Piping and Grading Plan - Mattawamon Wastewater Treatment Plant

PDF, High priority: read this firstspecifications
High

RFP 27-002 Addendum 2 - MWWTP Effluent FM Surge & Transient Design Build Services

PDF, High priority: read this firstamendment
High

RFP 27-002 Addendum #3 - MWWTP Effluent FM Surge & Transient Design Build Services

PDF, High priority: read this firstamendment
High

RFP 27-002 Addendum Number One - MWWTP Effluent FM Surge & Transient Design Build Services

PDF, High priority: read this firstamendment
High

Sample Contract - Consecutive Number of Days Specified

PDF, High priority: read this first2 pages · contract-document
High

Submittal E-15100-08-03 - Linestock and Wet Tap Resub

PDF, High priority: read this firstshop-drawing
High

UN 1282 - MWWTP Effluent FM Surge & Transient Design Build Services

PDF, High priority: read this firstrfp
High

Performance and Labor Bonds for Charles County ITB

PDF, Low priority2 pages · bond
Low

Project Close Out Documents - Charles County

PDF, Low priority7 pages · closeout-documents
Low

RFP 27-002 Pre-Proposal Meeting Attendance Roster

PDF, Low priorityattendance-roster
Low

RFP 27-002 Pre-Proposal Meeting Minutes - MWWTP Effluent FM Surge & Transient Design Build Services

PDF, Low prioritypre-proposal-minutes
Low

RFP 27-002 Site Visit Attendance

PDF, Low prioritysite-visit-attendance
Low

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AI Contract Breakdown

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Timeline

2 updates
PhaseSolicitation
Posted

Solicitation

Deadline changed

Response deadline changed from Nov 2, 2026 to Nov 9, 2026.

Notice updated

The notice description changed.

Response Deadline

Submission deadline

Response Deadline

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Organization & Contact Information

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AgencyMaryland → DPW - Capital Project Management
Contacts2 people available
OfficeLa Plata, MD, 20646, USA
Organization / AgencyMaryland → DPW - Capital Project Management
Office AddressLa Plata, MD, 20646, USA
Contacts
David StegerProject Manager
contact@example.gov
+1 (555) 000-0000
Latasha MinorSenior Procurement Specialist
contact@example.gov
+1 (555) 000-0000

Interested Companies (40)

Monterey ConsultantsDayton, OH
Kokosing IndustrialAnnapolis Junction, MD
Barton & LoguidiceAnnapolis, MD

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Full Description

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The Mattawoman Wastewater Treatment Plant (MWWTP) is rated for an average daily flow of 20 million gallons per day. In 2020, a major Project to improve he effluent pump station occurred. During this Project, the Design peak flow of the effluent pump station increased to 60 mgd. Treated effluent is pumped two miles through 54-inch diameter, 50-year old prestressed concrete cylinder pipe (PCCP) before transitioning to gravity flow for final discharge into the Potomac River. The County experiences transient surges in their effluent force main when effluent pumps turn on and off, causing the intermediate high point air release valve (ARV) located approximately 7,000 ft. from the pump station to actuate. With the recent increase to design peak flow, the County is concerned that future transient surges caused by cyclical pump operation or multiple pump trips may damage the existing force main and ARV.
Addendum #1: Please use the See What Changed link to view all the changes made by this addendum. Attachments: RFP_27-002_-_Addendum_1_-_FINAL_-_260803.pdf
Official Notice #1: Optional Pre-Proposal Meeting Attendance Roster and Minutes: Attachments: RFP_27-002_-_Pre_Proposal_Meeting_Minutes_-_260730.pdf, RFP_27-002_-_Pre_Proposal_Attendance_-_260730.pdf
Official Notice #2: Optional Site Visit Attendance Roster: Attachments: RFP_27-002_-_Site_Visit_Attendance_-_260813.pdf
Addendum #2: Please use the See What Changed link to view all the changes made by this addendum. Attachments: RFP_27-002_-_Addendum_2_-_FINAL-_260924.pdf
Official Notice #3: Additional as-builts: Attachments: 75-136_MWWTP_PS_Site_Plan.pdf, 75-119_6.TIF, Submittals_54-inch_Concrete_Pipe_by_Price_Brothers_66.75_(as_received_from_Hanson_Pipe).pdf, 75-119_9.TIF, 75-11900.TIF, 75-11901.TIF, 75-11902.TIF, 75-11903.TIF, 75-119_1.TIF, 75-119_2.TIF, 75-119_3.tif, 75-119_4.tif, 75-119_5.TIF, Closed_Loop_Record_drawings_Complete_Set.pdf
Addendum #3: Attachments: RFP_27-002_-_Addendum_3_-_FINAL_-_261021.pdf, REVISED_SHEET_C002_261021.pdf

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NAICS: 238220
SLED
Piping & Mechanical SupportsThis subcontract for Piping and Mechanical Supports involves the supply and installation of piping supports, anchors, and accessories for prime contractors working on Charles County DPW wastewater projects. The scope of work includes the installation of rigid pipe hangers and support systems engineered to manage operating loads in strict accordance with ASME B31.1 and MSS SP58 standards, culminating in the delivery of a fully installed pipe support system. Managed by the Maryland DPW Capital Project Management agency under NAICS code 238220, the opportunity was posted on July 8, 2026. Interested parties must submit their responses by the deadline of November 2, 2026, at 4:00 PM.
Plumbing, Heating, and Air-Conditioning Contractors

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4 months ago

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NAICS: 238210
SLED
Electrical & Control SystemsThis subcontract for Electrical and Control Systems involves the installation of electrical equipment, metering, and control systems for prime contractors on Charles County DPW wastewater projects. The scope of work includes the installation of metering equipment, alarm points, and alarm sequences, as well as the wiring and termination of control schematics to deliver a fully operational system. All work must comply with Division 16 Electrical Specifications and meet UL, ETL, FM, and CSA labeling standards. The project is managed by the Maryland DPW Capital Project Management agency under NAICS code 238210, with a response deadline of November 2, 2026.
Electrical Contractors and Other Wiring Installation Contractors

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4 months ago

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NAICS: 238320
SLED
Industrial Coating & PaintingThis industrial coating and painting subcontract supports Charles County DPW wastewater projects by providing protective coatings for concrete surfaces and steel standpipes. The scope of work includes both shop and field surface preparation, followed by the application of prime, intermediate, and finish coats. All materials and processes must strictly adhere to NSF 61 requirements to ensure safety and compliance. Quality assurance is a critical component of the contract, requiring all work to be reviewed and approved by a Protective Coatings Specialist or a NACE certified Coating Inspector. The project falls under NAICS code 238320 and is managed by the Maryland DPW Capital Project Management agency. Interested parties must submit their responses by the deadline of November 2, 2026.
Painting and Wall Covering Contractors

POSTED

4 months ago

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in 4 days
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