Psst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveCLEATUS Webinar: AI for Government Contracting — Free Webinar — Wednesday, September 16 at 2:00 PM EDT

Register Free →

Search

Top

Back to Contracts

UOSA IFB 27-01 GAC Treatment Optimization

Active

IFB-127897State & Local

Response Deadline10/06/2026, 06:00:00 PM UTC

Contract Overview

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

AI Contract Overview

Show more

The Upper Occoquan Service Authority is soliciting bids for the GAC Treatment Optimization project, identified as IFB-127897. The project is divided into two phases, with Phase 1 focusing on retrofitting one L/2 Building carbon contactor to serve as a PFAS pilot study system. This initial phase includes restoring upflow and downflow operating capabilities via underdrain nozzle system modifications and conducting a proof-of-concept evaluation for carbon transfer improvements. If authorized by the owner, Phase 2 will expand these improvements to the remaining seven carbon contactors, totaling fourteen cells, based on the outcomes of the first phase. The work will be performed in Centreville, Virginia. Interested parties must submit their responses by October 6, 2026.

General Info

Upper Occoquan Service Authority seeks bids for GAC Treatment Optimization in Centreville, Virginia.

Agency

Virginia → Upper Occoquan Service AuthorityView Agency

NAICS

237990 - Other Heavy and Civil Engineering ConstructionView NAICS

Place of Performance

Centreville, VA, USA

Set-Aside

NONE

Documents

(0)

No documents available

AI Contract Breakdown

Uniform Contract Format

No contract breakdown available.

Cannot generate Contract Breakdown because no documents were found from this contract's source.

Timeline

PhaseSolicitation

PostedSep 4

Solicitation

Response DeadlineOct 6

Submission deadline

Response Deadline

10/06/2026, 06:00:00 PM UTCin about 1 month

Ready to pursue this opportunity?

Start your free trial to track this contract, build proposals with AI assistance, and manage your pipeline.

Organization & Contact Information

Show more

AgencyVirginia → Upper Occoquan Service Authority

Contacts1 person available

OfficeN/A

Organization / Agency

Virginia → Upper Occoquan Service Authority

View Agency Profile

Office AddressN/A

Contacts

Dustin Baker

contact@example.gov

+1 (555) 000-0000

Full Description

Show more

Phase 1 of the GAC Treatment Optimization Project includes, but is not limited to, retrofitting one L/2 Building carbon contactor, consisting of two cells, to serve as the per- and polyfluoroalkyl substances (PFAS) pilot study system; restoring upflow and downflow operating capability through modifications to the existing underdrain nozzle system; and implementing a proof-of-concept evaluation for carbon transfer improvements. If authorized by the Owner, Phase 2 of the Project will include, but is not limited to, retrofitting the remaining seven carbon contactors (i.e., fourteen cells) with the selected improvements based on the results of Phase 1. A complete description of the Work can be found in the Contract Documents.

Similar Contracts

Same NAICS industry code

Bowman, ND Water Storage Reservoir

Solicitation # bowman-nd-water-storage-reservoir

The Bowman, ND Water Storage Reservoir project involves the demolition and removal of an existing 300,000 gallon concrete water storage tank and the subsequent construction of a new 600,000 gallon concrete tank. The scope of work includes associated piping, incidentals, the construction of an access road and parking pad, as well as topsoil management, excavation, seeding, erosion control, and fencing. Bidders may provide alternate bids for either a cast-in-place tank or a precast tank. Bids must be submitted to Rice Lake West via email to estimating@rlwest.org by September 9, 2026, at 5:00 p.m. This solicitation includes specific minority and women-owned business enterprise goals, requiring 2 percent MBE and 3 percent WBE participation. The project is located in North Dakota and falls under NAICS code 237990.

POSTED

about 3 hours ago

DEADLINE

North of River Sanitary District No. 1 WRRF Upgrades and Expansion

Solicitation # north-river-sanitary-district-no-1-wrrf-upgrades-expansion

Kiewit Infrastructure West Co. is soliciting sub-quotes for the North of River Sanitary District No. 1 WRRF Upgrades and Expansion project located in Bakersfield, California. The scope of work is extensive, covering civil and site work such as aggregates, trucking, asphalt paving, and pipe installation, as well as structural and finishing tasks including masonry, welding, roofing, electrical work, and interior finishes. Interested firms must contact Kiewit to receive an Invitation to Bid through the Building Connected system, with a response deadline of September 17, 2026, at 10:00 a.m. The project is partially financed by the Water Infrastructure Finance and Innovation Act (WIFIA) and administered by the EPA, making it subject to the American Iron and Steel (AIS) Provisions, Davis-Bacon Related Acts, and DBE Program requirements. Qualified bidders must possess a valid California Contractor’s license and provide acceptable insurance. Additionally, responsible subcontractors may be required to provide bonding for 100% of their contract value, with bond premiums reimbursed by Kiewit. The solicitation specifically encourages participation from certified DBE, MBE, WBE, and other small business enterprises, requiring evidence of certification from recognized agencies such as the US EPA, SBA, or CA DOT.

Kiewit Infrastructure West Co.

POSTED

about 3 hours ago

DEADLINE

Runway 19L, 28L & 28R Timber Trestle Improvements CA

Solicitation # runway-19l-28l-28r-timber-trestle-improvements-ca

The Runway 19L, 28L, and 28R Timber Trestles Improvement Project focuses on implementing critical safety enhancements to the trestles supporting FAA approach lighting systems in California. The primary objectives are to improve safe access for maintenance personnel and extend the operational service life of the trestles by over ten years. This solicitation is issued by Thompson Builders Corporation and is specifically set aside for Small Businesses, with a particular interest in Local Business Enterprise firms. Interested parties must submit their responses by September 9, 2026. The project falls under NAICS code 237990, and inquiries should be directed to Kelsey Heaphy.

Thompson Builders Corporation

POSTED

about 3 hours ago

DEADLINE

Haleiwa Small Boat Harbor Maintenance Dredging and Revetted Mole Repair

Solicitation # W9128A26BA002

The Haleiwa Small Boat Harbor Maintenance Dredging and Revetted Mole Repair project, solicitation W9128A26BA002, is a firm-fixed-price contract issued by the U.S. Army Corps of Engineers Honolulu District. Located in Haleiwa, Oahu, Hawaii, the scope of work involves maintenance dredging of approximately 4,260 cubic yards with ocean disposal south of Oahu, vegetation clearance, and repairs to the revetted mole, including stone rework and filling voids. The estimated contract value ranges from 1 million to 5 million dollars, with a performance period of 200 calendar days from the receipt of the Notice to Proceed. This solicitation is set aside for small businesses, including SDB, WOSB, HUBZone, VOSB, and SDVOSB concerns, with a specific price evaluation preference for HUBZone small businesses. Bids must be submitted as sealed physical envelopes by September 30, 2026, as electronic submissions are not permitted. Key requirements for a responsive bid include active SAM registration, a bid guarantee, and the submission of SF 1442. The contractor must provide key personnel, including a Project Manager and Site Safety and Health Officer, and adhere to Davis-Bacon Act wage requirements. Acceptance of the dredging work is based on pre- and post-dredge multi-beam hydrographic surveys conducted by a third-party qualified surveyor. Liquidated damages for delays are set at 2,297 dollars per calendar day.

Healy Tibbitts Builders, Inc.

POSTED

about 3 hours ago

DEADLINE

Rapid Infiltration Basins (RIBS) Rehabilitation: Three-Year Phasing

Solicitation # C007144

The Central Florida Tourism Oversight District is soliciting bids for the Rapid Infiltration Basins (RIBS) Rehabilitation project, a three-year phased initiative starting in October 2026. The scope of work involves the rehabilitation of fifteen specific cells divided across three fiscal years, beginning with cells 66 through 70 in FY 2027, followed by cells 48 through 53 in FY 2028, and concluding with cells 57, 58, 60, 71, and 72 in FY 2029. Technical requirements include the removal and disposal of existing 45 mil Hypalon liners and the installation of new 60 mil HDPE liners. The contractor is responsible for earthwork, grading, excavation and backfilling of anchor trenches, and the installation of new batten bars as needed. Additional requirements include concrete work via an allowance amount, as well as earthwork inside the cells and on berms, including sodding of berm tops and exterior slopes. Interested parties must be registered through PlanetBids to access supporting documents, with a response deadline of October 1, 2026.

Central Florida Tourism Oversight District

POSTED

about 5 hours ago

DEADLINE

Forest wide Decommissioning, Gunnison National Forest Colorado

Solicitation # 1240LT26Q0177

The Department of Agriculture, through the Csa Intermountain 8 Usda-Fs, is soliciting bids for the Forest wide Decommissioning project within the Grand Mesa, Uncompahgre, and Gunnison National Forests in Colorado. This project focuses on the removal of unusable structures across three specific sites: Ward Lake in Delta County, and Beaver Lake and Lakeview in Gunnison County. The scope of work includes the demolition of a toilet building at Ward Lake, the proper abandonment of water wells at Lakeview and Beaver Lake, and the removal of a concrete water tank at Beaver Lake. This opportunity, identified by solicitation number 1240LT26Q0177, is designated as a total small business set-aside under NAICS code 237990. Interested parties must submit their responses by September 22, 2026. The primary point of contact for this solicitation is Jordan Carlsen.

Csa Intermountain 8 Usda-Fs

POSTED

about 7 hours ago

DEADLINE

USACE National Enterprise Dredging Center Scope Dredge to Budget Contract

Solicitation # W912PM27RA006

The USACE Enterprise Dredge Delivery Center is implementing a Scope Dredge to Budget acquisition strategy for the Galveston and Houston Area of Responsibility under solicitation W912PM27RA006. The primary objective is to maximize the achievable scope, quality, and durability of dredging operations within a target budget. This effort covers multiple Texas navigation channels and harbors, including the Houston Ship Channel, Galveston Harbor, Corpus Christi Ship Channel, and the Gulf Intracoastal Waterway, among others. A virtual industry day is scheduled for October 16, 2026, to discuss the strategy and gather industry feedback. The procurement process consists of two phases. Phase One involves a technical qualifications-based evaluation focusing on past performance, proposed plant, and proof of bonding capacity, without requiring cost or detailed design information. A maximum of five offerors will be down-selected to proceed to Phase Two. In the second phase, selected offerors will submit competitive technical and price proposals. Evaluation factors for Phase Two include the schedule, management approach, the maximum use of beneficial use, and the ability to maintain channels at authorized dimensions for the longest possible duration.

W074 Endist Wilmington

POSTED

about 7 hours ago

DEADLINE

in about 1 month

W912HV27BA003 FY27 Maintenance Dredging Yokohama North Dock

Solicitation # W912HV-27-B-A003

The U.S. Army Corps of Engineers, Japan District, is seeking to prequalify local sources for the FY27 Maintenance Dredging project at Yokohama North Dock in Kanagawa, Japan. The project involves the removal of naturally recurring bottom sediments from Berths 1-7 and A-L using hydraulic or mechanical dredging methods, with an estimated project magnitude between 1,000,000,000 and 2,500,000,000 Japanese Yen. The subsequent solicitation is expected to be released in November 2026 as an Invitation for Bid under FAR Part 14 Sealed Bidding procedures. To be eligible for the solicitation, contractors must submit a prequalification package by 14:00 Japan Standard Time on September 25, 2026. Evaluation is based on three factors: possession of a Japanese civil construction license (Factor 1), demonstrated experience as a prime contractor on at least one relevant dredging project in Japan valued at 500,000,000 Yen or more within the last ten years (Factor 2), and a satisfactory past performance rating regarding quality and schedule (Factor 3). Only those rated GO for eligibility and ACCEPTABLE for experience and competence will be invited to bid.

W2SN Endist Japan

POSTED

about 7 hours ago

DEADLINE

in about 1 month

RFB-IS-27200152 - O277283,1017-27169 - CONCRETE DRIVEWAY & RAMP * RUSH * - Closing: 9/14/2026 12:00 PM

Solicitation # 231858

Los Angeles County is soliciting bids for project O277283,1017-27169, which involves the construction of a concrete driveway and ramp. This rush project is categorized under NAICS code 237999 and will be performed in Los Angeles, California. The solicitation, identified by number 231858, was posted on September 4, 2026. Interested parties must submit their responses by the deadline of September 14, 2026, at 7:00 PM. Marie Rose Babi serves as the primary point of contact for this opportunity.

Los Angeles County

POSTED

about 11 hours ago

DEADLINE

O&M Center Front Gate Drain and Grading (OM-DFD-2026-015)The California Department of Water Resources Division of Engineering is seeking a contractor for the O&M Center Front Gate Drain and Grading project, identified as OM-DFD-2026-015. The project involves installing a French drain system behind the existing guard shack at the O&M Center main entrance in Byron, California, to eliminate water ponding and redirect runoff into a nearby drain inlet. The scope of work includes trenching, backfilling, minimal grading, and the installation of an HDPE pipe drain system. All activities, including staging and grading, will be conducted within the DWR right-of-way and limited to previously disturbed areas. This opportunity was posted as a forecast on September 4, 2026.

California Water Resources, Department of

POSTED

about 12 hours ago

DEADLINE

Camarillo Airport, Airport Properties Limited (APL) Development ProjectThe Camarillo Airport Airport Properties Limited Development Project, managed by Ventura County in California, focuses on the critical rehabilitation of Runway 8-26. The scope of work includes pavement milling, resurfacing, and repair, as well as the rehabilitation of the runway edge lighting system. These improvements are necessary because the current pavement has exceeded its usable life, creating safety hazards and foreign object debris that could potentially damage aircraft. By addressing these infrastructure deficiencies, the project aims to halt further deterioration and ensure a safer operational environment for pilots and aircraft. This forecast project is located in Camarillo, California, and is overseen by the county's projects administration to maintain airfield safety and functionality.

POSTED

about 12 hours ago

DEADLINE

RFQ 27-1003, Construction Manager at Risk Services Consolidated Security Screening Checkpoint Project

Solicitation # 27-1003

The Capital Region Airport Commission is seeking a Virginia Class A general contractor to serve as the Construction Manager at Risk for the Consolidated Security Screening Checkpoint Project at Richmond International Airport. This project involves the consolidation of two existing security checkpoints into a single centralized facility, featuring approximately 113,000 square feet of new construction across two levels and a mezzanine, along with 103,000 square feet of renovation. The estimated construction cost is 215 million dollars. The scope of work includes preconstruction services such as constructability reviews, BIM clash-detection, and cost estimating, followed by a phased construction approach consisting of enabling projects, a first phase for seven screening lanes, and a second phase for the remaining lanes and office spaces. The procurement is a two-step competitive negotiation process. Step 1 requires the submission of a Statement of Qualifications by 3:00 PM EDT on September 28, 2026, to establish a shortlist of qualified offerors based on a qualitative scoring system and minimum qualifications. No pricing or Guaranteed Maximum Price proposals are permitted during this initial phase. Shortlisted firms will proceed to Step 2, where they will submit detailed technical and sealed cost proposals to be evaluated on a best-value basis. The Commission anticipates awarding the contract by the end of November 2026, with a tentative construction notice to proceed in January 2027. The selected contractor must comply with various regulatory requirements, including Buy America/Build America standards, DBE and small business participation goals, and strict airport security clearance and badging protocols. Performance will be managed through monthly invoicing with a 30-day payment term. The CMAR is responsible for implementing comprehensive safety, quality-control, and commissioning plans, and must support all funding-source compliance for federal and state grants. Final project acceptance will include the completion of punch lists, warranties, and operational readiness and airport transition activities.

Capital Region Airport Commission

POSTED

about 15 hours ago

DEADLINE

More opportunities from Virginia → Upper Occoquan Service Authority

Same awarding agency

Solicitation # 27-01

The Upper Occoquan Service Authority in Virginia has issued solicitation number 27-01, titled L2 GAC, which was officially posted on September 4, 2026. This local government procurement opportunity includes a scheduled pre-bid or proposal meeting set for September 17, 2026, at 10:00 AM to provide interested parties with essential project details. Prospective bidders must submit their formal responses no later than the deadline of October 6, 2026, at 6:00 PM. Further information regarding the solicitation and specific requirements can be accessed through the agency's official website.

POSTED

about 15 hours ago

DEADLINE

in about 1 month

UOSA IFB 27-04 Yorkshire Park Interceptor Upgrade

Solicitation # IFB-125753

The Upper Occoquan Service Authority is soliciting bids for the Yorkshire Park Interceptor Upgrade, identified as IFB 27-04. This project involves the replacement of the existing sanitary interceptor extending from Old Centreville Road to the Flat Branch Pump Station along the Bull Run River in Northern Virginia. The scope of work includes the removal of the existing sanitary sewer, installation of a new sewer main, the implementation of a sanitary bypass system, and construction across four stream crossings. Interested parties must submit their responses by September 9, 2026, at 7:00 PM. Complete specifications and drawings can be obtained by contacting the purchasing department at uosa.org. The primary point of contact for this solicitation is Dustin Baker, and the project falls under NAICS code 237110.

Water and Sewer Line and Related Structures Construction

POSTED

DEADLINE

UOSA IFB 27-02 P2NR+ Construction

Solicitation # IFB-127048

The Upper Occoquan Service Authority is soliciting bids for the P2NR+ Construction project at the Millard H. Robbins, Jr. Regional Water Reclamation Plant in Centreville, Virginia. This contract focuses on nitrogen management process improvements and various renewal and replacement upgrades. Key mechanical work includes replacing eight screw pumps at Primary Effluent Lift Stations 55/1 and 55/2, upgrading two RAS pumps at Station 9/1 to increase capacity, and improving cyclone and settleability at Selector Basins 56/1 through 56/7. Additionally, the project involves replacing secondary clarifier mechanisms for units 6/5 and 6/6, as well as a primary sludge pump at Station 54/2. The scope of work extends to critical electrical and infrastructure upgrades, including the replacement of equipment in Load Center No. 1 and Load Center No. 8. Further improvements will be made to the aeration basins, secondary effluent collection box, biofoam pump station, and various dewatering pump stations. The project also encompasses updates to the blower building, mixed liquor splitter box, and associated site piping and electrical systems. Responses for solicitation IFB-127048 are due by October 22, 2026.

Other Heavy and Civil Engineering Construction

POSTED

DEADLINE

in about 2 months

Hazardous Materials Mitigation

Remediation Services

POSTED

DEADLINE

in about 2 months

Mechanical, Electrical & HVAC Work (Additional Scope)

Plumbing, Heating, and Air-Conditioning Contractors

POSTED

DEADLINE

in about 2 months

Conduit & Duct Bank Removal/Replacement

Electrical Contractors and Other Wiring Installation Contractors

POSTED

DEADLINE

in about 2 months

Structural Concrete Repair

Poured Concrete Foundation and Structure Contractors

POSTED

DEADLINE

in about 2 months

Process Instrumentation & Control Systems (PICS) Installation

Electrical Contractors and Other Wiring Installation Contractors

POSTED

DEADLINE

in about 2 months

Project Schedule Updates & Management

Administrative Management and General Management Consulting Services

POSTED

DEADLINE

in about 2 months

Project Record & Close Out Documentation

Engineering Services

POSTED

DEADLINE

in about 2 months

Solicitation # 27-02

The Upper Occoquan Service Authority (UOSA) is soliciting sealed bids for the Phase 2 Nitrogen Removal Plus Other Interim Process Improvements project (Contract P2NR+) at the Millard H. Robbins, Jr. Regional Water Reclamation Plant in Centreville, Virginia. The scope of work includes upgrading two RAS pumps and increasing pumping capacity at RAS Pump Station 9/1, implementing cyclone and settleability improvements at Selector Basins, replacing secondary clarifier mechanisms, and replacing electrical equipment in Load Centers 1 and 8. The project is divided into three subprojects with substantial completion timelines ranging from 1,120 to 1,456 calendar days, with final completion required within 90 days of the completion of Subproject C. The contract will be awarded to the lowest responsive and responsible bidder based on the total cost of the base bid. Bidders must be licensed in the Commonwealth of Virginia and provide a bid bond, cash, or certified check as security. Key personnel, including the Project Manager and Project Superintendent, must have at least 10 years of experience in complex wastewater construction. The project is managed by Jacobs and requires the use of Trimble Unity Construct for electronic communications. Bids are due by 2:00 PM on October 22, 2026, and can be submitted physically at UOSA's Administration Building F or electronically via eVA. The contract includes a total owner's bid allowance of 775,000 dollars for potential additional work, such as structural concrete repair and hazardous materials mitigation.

POSTED

DEADLINE

in about 2 months

UOSA RFP 27-05 Compensation Study

Solicitation # RFP-126911

The Upper Occoquan Service Authority is soliciting proposals under RFP-126911 for a qualified consulting firm to perform a comprehensive classification, compensation, and benefits study. The project focuses on evaluating current structures, including special pay and incentive programs, to ensure market competitiveness, resolve wage compression, and develop enhanced career promotion pathways. The scope of the study encompasses 191 full-time positions across all job classifications, excluding the Executive Director/CEO. This solicitation was posted on August 21, 2026, with a response deadline of September 18, 2026. The work will be performed in Centreville, Virginia, under NAICS code 541612. Interested parties may contact Dustin Baker for further information regarding this SLED organization opportunity.

Human Resources Consulting Services

POSTED

DEADLINE