NIGP 13515: Clay, Kaolin and Ball

NIGP 13515 Clay, Kaolin And Ball is an Item code under which state and local governments procure soil cover materials for landfill operations and site remediation. Recent solicitations show Maryland Environmental Service and other public bodies sourcing large volumes of cover soil—up to 450,000 cubic yards—for sanitary landfill closure and ongoing operations, including testing and delivery to designated sites. The sourcing, testing, and delivery scope reflects active demand for bulk earthen materials with certification and transportation logistics built into contract performance.

Maryland has posted recent activity under this code, with Maryland Environmental Service's Brown Station Road Sanitary Landfill Cover Soil, Testing and Delivery solicitation (IFB 1274015, response due July 15, 2026) representing a representative current opportunity in the mid-Atlantic region. The Williamson County Purchasing Department notice (posted July 14, 2026) reflects administrative activity in Texas but does not constitute a procurement opportunity. Geographic spread and issuing-body frequency remain limited in the recent-opportunities block; no other state or local jurisdictions have posted solicitations under this code in the current window.