This is a Sources Sought notice to identify capable companies for Industrial Hygiene Services at Mississippi National Guard facilities. The work involves comprehensive IH investigations, including control evaluations, ventilation surveys, air sampling, and lead contamination assessments. Field personnel must have at least three years of IH survey experience and hold a specific science/engineering degree or a Certified Industrial Hygienist credential. Interested contractors must submit their company details, capabilities, and which specific attached facility locations they can support. Responses are due via email by 2:00 PM CDT on Friday, February 20, 2026.