Materials Testing Services: On-Call Contract for Professional Services

This is an on-call professional services contract for materials testing to support infrastructure improvement projects for the City of Flagstaff, Arizona, issued under solicitation number 2026-111 with a submission deadline of August 10, 2026. The contract, classified under NAICS code 541380, is structured as a three-year agreement with the potential for two one-year renewals contingent upon mutual written consent and successful performance reviews, and includes a one-time 90-day unilateral extension option. Services encompass laboratory and field testing of concrete, asphalt, soils, and aggregate base course, requiring strict adherence to standardized procedures such as slump and air testing for concrete, Marshall testing for asphalt, and proctor and gradation tests for soils, with results delivered within specified timeframes—four hours for asphalt and twenty-four hours for soils. Testing must be conducted from a laboratory located in Flagstaff or via an approved mobile laboratory, using nuclear densometers in full compliance with Arizona radiation regulations. All work must be supervised by a Professional Engineer licensed in Arizona, and the Firm is solely responsible for quality control, quality assurance, and compliance with City specifications for documentation and reporting, including weekly submittals and individualized project tracking with updated proctor summary sheets. The contract requires full compliance with federal, state, and local laws, including Arizona public records law, immigration statutes, and prohibitions against forced labor of Uyghurs and boycotts of Israel, with mandatory certifications submitted by the Firm. Insurance requirements include Commercial General Liability with $2 million aggregate, $1 million each occurrence, $1 million professional liability, $2 million umbrella coverage, $1 million automobile liability, and workers’ compensation, all with the City of Flagstaff named as an additional insured and policies providing primary coverage with broad form contractual liability. Payment is tied to accepted services and is due within thirty days of invoice receipt; invoices must be itemized, reference contract and purchase order numbers, and include work dates. The Firm is responsible for all federal, state, and local taxes unless explicitly itemized and approved in the bid. The selection process is qualifications-based under A.R.S. § 34-603, with award based on a scoring system evaluating firm overview and personnel (40 points), service approach (40 points), value-added experience (10 points), and overall evaluation (10 points). Interviews, if held, add another 210 possible points. The contract has an annual ceiling of $5