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Unofficial Notice of Invitation to Bid (NIB)

Imperial County is seeking bids from qualified and interested contractors for the following project titled, ON CALL, AS NEEDED, GEOTECHNICAL DESIGN AND MATERIAL TESTING, identified under Solicitation ID: -. Work is to be performed near 155 S 11th St, El Centro, CA 92243, USA in Imperial County.

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General Project Description

The Imperial County Department of Public Works (ICDPW) is requesting proposals from qualified professionals to provide on-call Geotechnical Engineering and Material Testing services. These services will be provided on an as-needed and intermittent basis to assist the County with various assignments for local, state, or federally funded projects, especially during peak workload periods or staffing shortages. The project involves a range of geotechnical and materials testing, design review, and engineering support tasks for County Transportation, Capital Improvement, Grading, Drainage, and Utility projects, functioning as an extension of County staff expertise.

General Bid Items

  • Quantity: -  Unit: -  Work Item: Plan checking and review services, related to soils and geotechnical engineering design for County Transportation Projects, Capital Improvement Projects, Grading & Drainage Plans & Reports, and Utility Projects
  • Quantity: -  Unit: -  Work Item: Materials testing services, for County Transportation Projects, Capital Improvement Projects, Grading & Drainage Plans & Reports, and Utility Projects
  • Quantity: -  Unit: -  Work Item: Preparation of soils reports
  • Quantity: -  Unit: -  Work Item: Geotechnical testing
  • Quantity: -  Unit: -  Work Item: Testing of materials
  • Quantity: -  Unit: -  Work Item: Materials specification recommendations and reports
  • Quantity: -  Unit: -  Work Item: Professional Soils & Geotechnical Engineering Design, as-needed
  • Quantity: -  Unit: -  Work Item: Materials Testing Services, as-needed
  • Quantity: -  Unit: -  Work Item: Engineer of Record services, for design, materials testing, and inspection; California registered professional geotechnical engineer required
  • Quantity: -  Unit: -  Work Item: Laboratory facilities provision, must have current Caltrans accreditation
  • Quantity: -  Unit: -  Work Item: Testing and sampling of soil
  • Quantity: -  Unit: -  Work Item: Testing and sampling of Portland cement products (concrete, grout, mortar, etc.)
  • Quantity: -  Unit: -  Work Item: Testing and sampling of steel
  • Quantity: -  Unit: -  Work Item: Testing and sampling of masonry
  • Quantity: -  Unit: -  Work Item: Testing and sampling of aggregate and asphalt concrete
  • Quantity: -  Unit: -  Work Item: Welding inspection
  • Quantity: -  Unit: -  Work Item: Non-destructive materials testing
  • Quantity: -  Unit: -  Work Item: Site borings
  • Quantity: -  Unit: -  Work Item: Cone penetration testing
  • Quantity: -  Unit: -  Work Item: Trenching
  • Quantity: -  Unit: -  Work Item: Evaluation of geological setting, condition, structure and formation
  • Quantity: -  Unit: -  Work Item: Testing and evaluation of soil characteristics
  • Quantity: -  Unit: -  Work Item: Geophysical investigation
  • Quantity: -  Unit: -  Work Item: Groundwater evaluation
  • Quantity: -  Unit: -  Work Item: Investigating landslides and geological hazards (including local and regional seismic faults)
  • Quantity: -  Unit: -  Work Item: Potential for liquefaction materials/engineering services

NAICS Classification

NAICS 541330 – Engineering Services (Providing geotechnical engineering design, review, and consulting services, including soils reports, material specifications, and hazard investigations), NAICS 541380 – Testing Laboratories (Performing materials testing for soil, concrete, asphalt, steel, masonry, and other construction materials, and performing geotechnical testing like borings and cone penetration tests)

Records and Due Date

This bid opportunity was entered into BidAmerica on November 27, 2025, and was last updated on November 26, 2025. All bids and/or proposals are due on January 19, 2026.

Contractors may log in or create a free BidAmerica account to view full project documents, plans, specifications, addenda, submission requirements, and more project details issued by Imperial County.

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 Imperial County. 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 Imperial County prior to bidding.

ON CALL, AS NEEDED, GEOTECHNICAL DESIGN AND MATERIAL TESTING - Bid Opportunity | BidAmerica