This Government Contract opportunity from California was posted on June 18, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

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Independent Cost Estimating for Wastewater Infrastructure Projects

Closed

State & Local

Submission Closed07/30/2026, 06:00:00 PM UTC

Contract Overview

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

Active Opportunities Like This One

NAICS: 541330

New

Scattergood GS. Units 1&2 Green Hydrogen-Reaady Modernization

Solicitation # scattergood-gs-units-12-green-hydrogen-reaady-modernization

Kiewit Infrastructure West Co. is seeking sub-quotes for the Scattergood GS Units 1 and 2 Green Hydrogen-Ready Modernization project for the City of Los Angeles Department of Water and Power. The scope of work is extensive, encompassing professional and technical services such as civil, structural, mechanical, electrical, and instrumentation and controls engineering, as well as utility locating, geotechnical and geophysical investigations, BIM/3D modeling, and environmental assessments. Additional requirements include hazardous materials surveys, permitting support, and CPM scheduling. Interested firms must contact Kiewit to receive an Invitation to Bid via the Building Connected system, with a bid date of September 11, 2026, and a response deadline of September 30, 2026. Eligible bidders include Disadvantaged, Minority, Women, and Other Business Enterprises, provided they hold certifications from recognized agencies such as the SBA or MBDA. Responsive bidders must possess a valid California Contractor's license and provide acceptable insurance. Subcontractors and material contractors are required to provide bonding for 100 percent of their contract value, though Kiewit will reimburse the associated bond premiums. Furthermore, Kiewit, as a signatory to various collective bargaining agreements, requires bidders to demonstrate an ability to maintain labor harmony on the project. For further information or to review plans and specifications, interested parties should contact Lead Estimator Joe Bockelman.

Kiewit Infrastructure West Co.

POSTED

DEADLINE

Seeking Qualified Subconsultants for City of Bend’s Southwest Sewer Improvement Phase 3, Project No. 1SSW3

Solicitation # seeking-qualified-subconsultants-city-bends-southwest-sewer-improvement-phase-3-project-no-1ssw3

Water Systems Consulting, Inc. is seeking qualified subconsultants to assist with the Southwest Sewer Improvement Phase 3 project for the City of Bend, Oregon. The scope of work involves professional design services to address sewer system deficiencies, including the extension of gravity sewer mainlines, the decommissioning of pump stations, and the installation of service laterals for properties currently using septic systems. Additional requirements may include transportation improvements. Specifically, WSC is looking for expertise in roadway and drainage engineering, surveying and mapping, right of way services, and public outreach. This project is funded by the Clean Water State Revolving Fund and administered through the Oregon Department of Environmental Quality. The solicitation is open to various small business designations, including DBE certified firms, and is associated with NAICS codes 541330, 541370, 531390, and 541820. Interested parties must respond by September 29, 2026.

Water Systems Consulting, Inc.

POSTED

DEADLINE

SEEKING QUALIFIED SUBCONSULTANTS IN RIVERSIDE COUNTY/SOCAL TO SUPPORT WELL REPLACEMENT PROJECT WITH WATER DISTRICT

Solicitation # seeking-qualified-subconsultants-riverside-countysocal-support-well-replacement-project-water

GHD Inc. is soliciting qualified subconsultants to support the Corydon Well Replacement Design Project for the Elsinore Valley Municipal Water District in California. The project seeks firms specializing in engineering, environmental services, surveying, geotechnical analysis, permitting, public outreach, and utility location. This opportunity is specifically targeted toward Disadvantaged Business Enterprises, Small Business Enterprises, Women-Owned Business Enterprises, and Minority-Owned Business Enterprises. Interested firms must contact Charlie Brown via email to submit a qualifications package and request solicitation documents. The primary NAICS code associated with this effort is 541330, though several other professional and technical service codes are applicable. All necessary documentation and expressions of interest must be coordinated by the specified deadlines to be considered for participation in the project.

POSTED

DEADLINE

Subcontracting Opportunity: City of Bend’s Southwest Sewer Improvement Phase 3, Project No. 1SSW3

Solicitation # 27-3214

Parametrix is seeking qualified subconsultants to provide civil engineering design and right-of-way services for the City of Bend’s Southwest Sewer Improvement Phase 3, Project No. 1SSW3. The project aims to address sewer system deficiencies in southwest Bend by extending a gravity trunk sewer line to unsewered areas, decommissioning existing pump stations in the Romaine Village area, and installing service laterals to transition properties from private septic systems to public sewer. The scope may also include roadway reconstruction, ADA curb ramp and curb design, and minor transportation improvements such as turn lanes or mini roundabouts. The project is funded by the Clean Water State Revolving Fund administered through the Oregon Department of Environmental Quality, with a total design and construction budget of 3,875,000 dollars. The procurement process is managed by the City of Bend, with a proposal deadline of September 29, 2026. Selection is based on technical and administrative capabilities, with the potential for interviews to influence final scoring. Key deliverables include a preliminary engineering report, a public outreach plan, and construction contract documents at 30, 60, 90, and 100 percent completion, culminating in record drawings. The City intends to advertise for construction services in Fall or Winter 2027. Parametrix is actively soliciting firms with recognized federal, tribal, state, local, or independent DBE certifications as part of a good faith effort to include small, minority-owned, women-owned, and veteran-owned businesses.

POSTED

DEADLINE

RFQ Water & Wastewater SCADA System Upgrade (PSA-2026-26)

Solicitation # 28283

The City of Port Angeles is seeking qualified consulting firms to conduct a professional evaluation and implement a multi-year upgrade of its Supervisory Control and Data Acquisition (SCADA) systems. The scope of work encompasses planning, engineering, integration, and construction support services for the City's Water Facility, Wastewater Treatment facilities, and various remote sites. The City emphasizes inclusivity and encourages responses from disadvantaged, minority, and women-owned firms, while ensuring full compliance with the ADA and Title VI of the Civil Rights Act. Interested consultants must submit electronic proposals in PDF format by October 21, 2026, at 5:00 p.m. Submissions must include firm details, contact information for a project manager, and staffing levels. Proposals will be evaluated based on the firm's reputation, the qualifications of the project manager, the proposed approach, the ability to meet schedules, and familiarity with City facilities and standards.

POSTED

DEADLINE

Electrical Infrared Scanning

FREG5 - Facilities Management & Capital Planning - Region V

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DEADLINE

EV Charging Infrastructure Designer

POSTED

DEADLINE

Solar PV and Battery Energy Storage System (BESS) Designer

POSTED

DEADLINE

Electrical Engineering Sub-Consultant (Microgrid & Power Distribution)

POSTED

DEADLINE

Design / Engineering for Microgrid System and DC fast charger

Solicitation # PE-64458-NONST-2027-000000037

The City of Decatur is seeking qualified professional engineering firms to provide turnkey services for the design, bid assistance, and construction administration of a microgrid system and DC fast charger for electric vehicles at the Decatur Police Department located at 420 West Trinity Place. The project involves integrating a solar photovoltaic generation system and a battery energy storage system designed to optimize renewable energy and peak demand management during normal grid-connected operations, while ensuring critical loads remain operational during emergency grid-islanded conditions. The selected consultant will be responsible for delivering complete design plans for bidding and providing construction administration through installation, commissioning, testing, and interconnection with Georgia Power. This solicitation, posted on September 11, 2026, requires proposals to be submitted by October 13, 2026. The project is funded by the City and a Department of Energy grant, necessitating strict compliance with Build America, Buy America (BABA) requirements and federal regulations. Awarded firms must maintain a non-discrimination policy and carry an umbrella insurance policy of at least 5 million dollars. Evaluation is based on a 100-point weighted system, and the expected project start date is November 2026, following coordination with Georgia Power. Payment will be made monthly based on progress reports and invoices submitted to the City Manager.

POSTED

DEADLINE

CEI, San Antonio District, IH-10

Solicitation # 601CT000006556

The Texas Department of Transportation has issued solicitation 601CT000006556 for Construction Engineering Inspection (CEI) services. The project is located within the San Antonio District and specifically covers IH-10 from Pioneer Road to FM 464 in Guadalupe County, Texas. This procurement falls under NAICS code 541330 and is managed by the agency's SLED organization. Interested parties must submit their responses by October 2, 2026, at 1:00 PM. The primary point of contact for this solicitation is Philip Howlett, who can be reached via email at Philip.Howlett@txdot.gov or by phone at 210-784-6844. The solicitation was officially posted on September 10, 2026.

Texas Department of Transportation

POSTED

DEADLINE

Infrastructure - Request for Proposal - RFP FOR SITE AND GEOTECHNICAL INVESTIGATION CONSULTANT SERVICES FOR VARIOUS LOCATIONS – ELEVEN (11) SOUTH ALBERTA SCHOOL SITES

Solicitation # AB-2026-06239

The Infrastructure agency is seeking proposals from qualified consultants to provide site and geotechnical investigation services for eleven school sites located in South Alberta. This solicitation, identified as AB-2026-06239, focuses on essential land assessments and technical investigations to support the development of educational facilities in the Calgary region. Interested parties must submit their responses by the deadline of October 7, 2026, at 10:00 PM. The procurement process is being managed by Project Procurement Specialist Nkechi Nzewi, and further details regarding the submission process can be found through the official Alberta purchasing portal.

Infrastructure

POSTED

about 17 hours ago

DEADLINE

in 26 days

AI Contract Overview

The Orange County Sanitation District is seeking a subcontractor to provide independent cost estimates for wastewater infrastructure projects throughout all design phases. The scope of work encompasses a variety of assets, including treatment facilities, pump stations, and pipelines. Selected providers must deliver detailed basis of estimates and clear assumptions, utilizing industry tools such as HeavyBid to ensure accuracy. This subcontract opportunity is categorized under NAICS code 541330 and will be performed in Fountain Valley, California. Interested parties must submit their responses by July 30, 2026, following the posting date of June 18, 2026.

General Info

Subcontractor needed for wastewater infrastructure cost estimates in Fountain Valley by July 30, 2026.

Agency

California → ORANGE COUNTY SANITATION DISTRICTView Agency

NAICS

541330 - Engineering ServicesView NAICS

Place of Performance

Fountain Valley, CA, 92708, USA

Set-Aside

NONE

Documents

This scope was carved out of PSA2026-002.

The full solicitation package (5 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

COST ESTIMATING SERVICES

AI Contract Breakdown

Uniform Contract Format

No contract breakdown available.

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Timeline

PhaseClosed

PostedJun 18

subcontract

Response DeadlineJul 30

Deadline has passed

Submission Closed

07/30/2026, 06:00:00 PM UTC

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Organization & Contact Information

AgencyCalifornia → ORANGE COUNTY SANITATION DISTRICT

ContactsNo contacts available

OfficeN/A

Organization / Agency

California → ORANGE COUNTY SANITATION DISTRICT

View Agency Profile

Office AddressN/A

ContactsNo contact information available

Full Description

Provide independent cost estimates for OC SAN’s wastewater infrastructure projects across all design phases, including pipelines, pump stations, and treatment facilities. Deliverables include basis of estimates, assumptions, and use of tools like HeavyBid.

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