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This Government Contract opportunity from California was posted on May 8, 2026. The submission period has ended. Browse the details below for market research, or find similar active opportunities.

Closure and Post-Closure Plan Development

Closed
State & Local

Contract Overview

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

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NAICS: 541330
New
SLED
Orange County Managed Lanes Segment Advancement Study C265256
Solicitation # C265256
The Orange County Transportation Authority is soliciting professional services for the Orange County Managed Lanes Segment Advancement Study, a project with an estimated budget of 350,000 dollars and a duration of 18 months. The primary objective of the study is to evaluate existing, planned, and potential managed lane facilities to identify priority segments ready to advance into the Project Initiation Document phase. The work is structured into four key tasks: project management and coordination, segment inventory and screening, priority segment advancement assessment for up to two segments, and the delivery of a final study report with technical appendices. This is a firm fixed price contract requiring the consultant to provide designated key personnel and adhere to Level 1 Health, Safety, and Environmental specifications, including compliance with CCR Title 8. Invoicing occurs on a monthly basis, with payments remitted within 30 calendar days of approval, and final acceptance is contingent upon the release of retention. Proposals must be submitted electronically via the OpenGov portal by November 30, 2026, and must include a detailed cost proposal across the four specified tasks. Consultants are also required to disclose any conflicts of interest and may be required to file Statements of Economic Interest.
Planning-Planning & Analysis

POSTED

about 15 hours ago

DEADLINE

in about 1 month

AI Contract Overview

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The contract entails the development and updating of closure plans, final covers, leachate collection systems, and long-term maintenance strategies for landfill sites, ensuring full compliance with applicable environmental and regulatory standards. The work focuses on implementing scientifically sound and legally compliant solutions to manage post-closure risks, including groundwater protection, surface water management, and structural integrity of landfill caps over extended periods. All deliverables must align with state and federal requirements for hazardous and non-hazardous waste facility closures. This subcontract is issued under the NAICS code 541330, indicating it involves environmental consulting services, and is administered by the California Public Works agency. The solicitation was posted on May 8, 2026, with a response deadline of May 27, 2026. While the exact location of performance is unspecified, it is expected to occur within California as indicated by the agency’s jurisdiction. Contractors must be prepared to demonstrate technical expertise in landfill closure engineering, regulatory navigation, and long-term environmental monitoring to meet the stringent obligations of this agreement.

General Info

Development and update of closure plans, leachate systems, and maintenance meeting regulatory compliance.

Place of Performance

CA, USA

Set-Aside

NONE

Documents

This scope was carved out of 2025-RFP-S-0082.

The full solicitation package (10 documents), including the RFP, is on the prime solicitation, not on this scope.

View the prime solicitation

Groundwater Monitoring and Sampling Services

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Timeline

PhaseClosed
Posted

subcontract

Response Deadline

Deadline has passed

Submission Closed

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Organization & Contact Information

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AgencyCalifornia → Public Works
ContactsNo contacts available
OfficeN/A
Organization / AgencyCalifornia → Public Works
Office AddressN/A
ContactsNo contact information available

Full Description

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Develop and update closure plans, final covers, leachate collection systems, and long-term maintenance plans in compliance with regulatory standards.

More opportunities from California → Public Works

Same awarding agency

NAICS: 324121
New
SLED
Request for Quotes (RFQ): Road Maintenance Cold-Mix Asphalt and SS1 Oil
Solicitation # '
San Benito County Public Works is seeking qualified vendors to provide Caltrans-compliant cold-mix asphalt and SS1 oil for road maintenance and repair projects. The contract is for an initial term of two years with a one-year extension option, requiring the selected vendor to furnish and deliver an estimated 100 tons of cold-mix asphalt and 1 ton of SS1 oil monthly. While regular monthly deliveries are expected, as-needed requests must typically be fulfilled within 24 hours. The award will be based on the overall best value, evaluating price, compliance, and delivery capability, with a 3% local preference for goods up to 500,000 dollars and a preference for California-made materials. Vendors must maintain DIR registration and compliance, adhere to prevailing wage requirements, and carry comprehensive general and excess public liability insurance of at least 1,000,000 to 2,000,000 dollars. All products must be new, commercially produced, and meet Caltrans specifications, with the vendor providing necessary product data sheets and safety data sheets upon request. The County reserves the right to reject materials that are damaged, contaminated, or outside required temperature and specification ranges. Payment is set at net 30 days from the invoice date, with billing occurring one month in arrears. Quotations are due by November 13, 2026, and must remain valid for 90 days.
Asphalt Paving Mixture and Block Manufacturing

POSTED

about 16 hours ago

DEADLINE

in 16 days
View Details
New
SLED
Solid Waste Procurement Consultant
Solicitation # 199394
The City of Palo Alto Public Works Department is soliciting proposals under RFP 199394 for a Solid Waste Procurement Consultant to provide technical, strategic, and support services. The selected consulting firm will assist the City in developing and procuring a comprehensive solid waste management services agreement, which includes recommending agreement structures, compensation methodologies, and term options. The consultant is expected to provide a wide range of deliverables, including a comparative review of at least five jurisdictions, the drafting of RFPs and cost proposal forms, proposal evaluation and ranking, and the finalization of execution-ready agreements. All strategies must align with the City's zero waste, sustainability, and climate action goals. The contract will be structured as a not-to-exceed budget per task. Proposals are due by December 1, 2026, via the OpenGov portal and must be submitted in separate technical and cost volumes. Evaluation will be based on the quality of the proposal, the proposed solution, the consultant's experience, cost, financial stability, and the ability to perform within the specified timeframe, with experience weighted at 30 percent and proposal quality at 10 percent. The agreement is governed by a sample professional services agreement and includes strict requirements for environmental packaging, such as the use of 30 percent post-consumer content paper and vegetable-based inks for professional printing. Key personnel and a designated Project Manager are critical to the evaluation, and any substitutions require prior written approval from the City.

POSTED

about 23 hours ago

DEADLINE

in about 1 month
View Details

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