Aggregate Testing and Quality Assurance Services

The City of Detroit is seeking a subcontractor to provide independent laboratory testing services for construction aggregates to ensure compliance with AASHTO, ASTM, and MTM standards. The scope of work includes performing sieve analysis to determine particle size distribution, abrasion resistance testing to evaluate durability, and impurity checks to identify contaminants that could compromise material integrity. All testing must adhere strictly to recognized industry protocols and deliver accurate, certified results suitable for public infrastructure projects. The opportunity is posted as a subcontract under NAICS code 541380, and responses are due by June 5, 2026. The contract is open to qualified service providers with the technical capability and laboratory accreditation required to meet federal and state material quality benchmarks, though no specific set-aside provisions are indicated. Interested parties must submit proposals through the designated online portal prior to the stated deadline.