Unofficial Notice of Invitation to Bid (NIB)

California State Dept of Transportation (CalTrans) is seeking bids from qualified and interested contractors for the following project titled, On-Call Biological Services, identified under Solicitation ID: 12A2343. Work is to be performed near 1900 Royal Oaks Dr, Sacramento, CA 95815, USA in Sacramento County.

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General Project Description

This is an On-Call contract for Biological Services for Caltrans District 12 projects primarily in Orange County, covering consultation, research, professional and technical services on an "as-needed" basis. The work supports the Department of Transportation's Division of Environmental Analysis from the Project Approval/Environmental Document phase through construction completion. Services include field sampling, analysis, report preparation, studies of endangered/threatened/rare species, wetland delineation, construction monitoring, mitigation planning and implementation, and the preparation of comprehensive environmental compliance documents (e.g., Natural Environment Studies, Biological Assessments, Mitigation Monitoring Plans, Environmental Impact Reports) in accordance with Federal (NEPA) and State (CEQA) environmental laws and regulations for various transportation infrastructure improvements.

General Bid Items

Quantity: - Unit: - Work Item: Performing studies, surveys, monitoring, sampling, transplanting, trapping, restoring, and mitigation of impacts for endangered, threatened, rare, proposed, and candidate species.
Quantity: - Unit: - Work Item: Wetland delineation and assessment of wetland functions and values in accordance with the Corps of Engineers Wetland Delineation Manual: Arid West Region.
Quantity: - Unit: - Work Item: Construction monitoring, including biological monitoring, protocol-level construction surveys, and handling of protected resources.
Quantity: - Unit: - Work Item: Mitigation/Restoration Planning and Monitoring, including development of Habitat Mitigation and Monitoring Plans (HMMP) and monitoring of mitigation sites.
Quantity: - Unit: - Work Item: Preparation of permit applications and approvals for various agencies (e.g., USACE 404/10, Department of Fish and Wildlife 1600 Agreement, Coastal Development Permit, USFWS/NMFS Approval, Regional Water Quality Control Board 401).
Quantity: - Unit: - Work Item: Preparation of environmental compliance documents, including Natural Environment Studies (NES), Biological Assessments (BA), Wetlands Assessment, Mitigation Monitoring Plan Reports (MMP), Environmental Impact Reports (EIR), Environmental Impact Statements (EIS), Initial Study (IS)/Negative Declaration (ND)/Mitigated Negative Declaration (MND), Environmental Assessments (EA)/Finding of No Significant Impacts (FONSI), and Categorical Exemptions (CE)/Categorical Exclusions (CE).
Quantity: - Unit: - Work Item: General Surveys and Studies, including Wildlife Crossings and Corridor Studies, Bio-acoustic/hydro-acoustic studies, Vegetation mapping, and Invasive species mapping.
Quantity: - Unit: - Work Item: Application of California Rapid Assessment Method (CRAM) and Fish Passage Assessment Protocol Level Surveys.
Quantity: - Unit: - Work Item: Botanical surveys.
Quantity: - Unit: - Work Item: Environmental Scoping, Public and Agency Scoping Process, and Alternatives for Further Study for projects.
Quantity: - Unit: - Work Item: Community Impact Analysis, Land Use and Growth Studies.
Quantity: - Unit: - Work Item: Environmental Re-evaluation, Environmental Quality Control and Other Reviews, Environmental Coordination, and NEPA Assignment support.
Quantity: - Unit: - Work Item: Updating Environmental Commitments Records (ECR) and conducting Biological Mitigation, including long-term monitoring.

NAICS Classification

NAICS 541620 – Environmental Consulting Services (Providing comprehensive biological and ecological studies, environmental impact assessments, mitigation planning, and regulatory compliance documentation for transportation projects.), NAICS 541690 – Other Scientific and Technical Consulting Services (Performing specialized field surveys, data analysis, and technical reporting related to biological resources and habitat management.)

Records and Due Date

This bid opportunity was entered into BidAmerica on December 22, 2025, and was last updated on December 19, 2025. All bids and/or proposals are due on January 12, 2026.

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Legal Disclaimer

All bidders are responsible for reviewing and verifying all official bid documentation directly from the issuing agency. BidAmerica aggregates public bid information for advertisement purposes for contractors and government agencies convenience. This Notice of Invitation to Bid is for reference purposes only and is not an official or complete representation of any documents issued by California State Dept of Transportation (CalTrans). BidAmerica does not guarantee the accuracy, completeness, or timeliness of any information displayed and shall not be held liable for any errors, omissions, misinterpretations, or damages resulting from reliance on this summary. Contractors must obtain all official information—including plans, specifications, addenda, deadlines, submission requirements, qualifications, and bidding conditions—directly from California State Dept of Transportation (CalTrans) prior to bidding.