NIGP 99236: Core Sample (Not Concrete) Testing Services

NIGP 99236 Core Sample (Not Concrete) Testing Services is an Item code under which state and local governments procure professional geotechnical and construction materials testing services, including subsurface characterization, field inspection, laboratory analysis, and compliance documentation to verify that construction materials and site conditions meet project specifications and regulatory standards. The scope encompasses geotechnical investigation, materials testing oversight, environmental site characterization, and technical reporting integrated with design-build and traditional construction delivery structures. Cities and counties are the primary issuing bodies, with procurement activity spanning municipal infrastructure projects, public facilities, and water utility work. The testing services are typically solicited as standalone professional services contracts or as components embedded within larger capital projects, with deliverables including field boring and sampling, laboratory testing reports, subsurface profiles, and compliance certifications.

Recent activity appears concentrated in Florida and Texas, with representative opportunities including the City of Fort Myers's RFQ for geotechnical engineering and construction materials testing services supporting the Fort Myers Police Department Headquarters project (RSQ26053, due July 2, 2026), which specifies subsurface characterization and materials laboratory oversight throughout the facilities project with unit-price fee structure and integration into a design-build delivery model. Additional context comes from the City of Dallas's water and wastewater main replacement projects (CIZDWU25479480, due April 3, 2026; CIZDWU26117118, due June 26, 2026), which include geotechnical and materials testing components as supporting work within larger infrastructure bids. The City of Bradenton (26020MK, due April 2, 2026) solicited environmental testing engineering services including Phase I and II/III environmental site assessments and materials testing through a continuing services library structure with task order issuance. Activity reflects municipal and water utility investment in subsurface investigation and materials compliance prior to construction.