NIGP 75093: Storage Bins, Aggregate

NIGP 75093 Storage Bins, Aggregate is an Item code describing the supply of aggregate materials — stone, sand, slag, and asphalt products — that state and local governments procure for street maintenance, pavement rehabilitation, and infrastructure repair. Recent solicitations reveal that cities and counties buy these materials in bulk tonnage for departmental operations and capital projects, typically structured as blanket purchase agreements or single-award contracts with unit pricing per ton and multi-year renewal options. The City of Detroit and Santa Clara County are the primary recent buyers, issuing RFQs and ITBs for seasonal and project-specific aggregate supply. Detroit restricts several of its aggregate solicitations to Detroit-based certified vendors and offers equalization credits ranging from 1 to 5 percent depending on business classification (Detroit-Based, Detroit-Resident, Detroit-Headquartered, Small Business, or Micro Business designations). Vendors must demonstrate a minimum of two years' experience, furnish bid and performance bonds, carry standard commercial liability and workers' compensation insurance, and meet ASTM and AASHTO material grading standards. Delivery timeframes typically range from seven days to sixty-five working days, depending on project scope.

Recent activity concentrates in California and Michigan. The City of Detroit issued RFQ 546989 (posted May 21, 2026, due June 5, 2026) for approximately 11,000 tons of fine and coarse aggregates — 5,000 tons MDOT 23A stone, 1,000 tons Sand 2NS, and 5,000 tons Slag 22A — restricted to Detroit-based certified vendors and evaluated on organizational qualifications, capacity, experience, specification compliance, and competitive pricing. The City also posted RFQ 548310 (June 15, 2026, due June 29, 2026) for 3,000 tons of Bituminous Aggregate Wearing Course 36A asphalt, open to all qualified vendors with Detroit-based equalization preference available. Santa Clara County issued ITB ITBRDAFY260694 (April 29, 2026, due May 21, 2026) for the Central Expressway Pavement Rehabilitation Project, and ITB ITBRDAFY270088 (August 26, 2026, due September 17, 2026) for Sanitation District No. 2-3 infrastructure repair in the unincorporated eastern foothills, which includes sewer pipe replacement but does not emphasize aggregate supply as a primary line item.