On-Call Geotechnical Engineering Services

Pinal County, Arizona is seeking proposals for an On-Call Geotechnical Engineering Services contract to support its Development Services - Public Works division. The procurement aims to secure qualified consultants to provide comprehensive geotechnical engineering services, including planning, studying, and analyzing soils, rock, and other materials for public works, transportation, and infrastructure projects. Required services encompass field investigations, laboratory testing, analyses, and preparation of reports and deliverables, with specific focus on site investigations, subsurface exploration, soil sampling, and evaluation of soil and rock conditions. The solicitation requires detailed technical submissions, including a one-page cover letter, maximum eight-page technical proposal, and individual two-page resumes. Evaluation criteria will assess experience and qualifications of key personnel (40 points), familiarity with municipal and government standards (30 points), value engineering examples (15 points), and conflict-of-interest management (15 points). Key dates include a question period from December 4, 2025, to December 12, 2025, with proposal submissions due on January 6, 2026, at 2:00 PM MST. The contract is anticipated to be awarded in March 2026, with an initial one-year term and potential extensions up to four additional one-year periods.

The county encourages participation from disadvantaged business enterprises (DBE), minority-owned businesses (MBE), and women-owned businesses (WBE), though no specific set-aside percentages are mandated. Responders must comply with federal grant contract terms, including provisions related to 2 CFR Part 200, Davis-Bacon Act wage standards, Buy American Act requirements, and anti-discrimination protections. Insurance requirements include $1,000,000 Commercial General Liability, $2,000,000 Professional Errors and Omissions, and $2,000,000 Technology/Cyber Liability coverage. While no specific contract value is listed, the procurement indicates the county will use awarded contracts on an as-needed basis with no guaranteed spending levels. The contract will utilize federally funded grants, with pricing structured as fully-burdened labor rates that include wages, taxes, benefits, corporate overhead, and profit. Successful respondents must be prepared to provide comprehensive geotechnical services across various project types, including earth fissure investigations, expansive soil evaluations, ground improvement methods, and infrastructure stability assessments.