Attachment 2_IH Reports Guard Shacks.pdf

This is an Industrial Hygiene Report documenting bulk asbestos identification results in floor tile and mastic materials from the 800 Area at Argonne National Laboratory.

The report presents sampling results from two separate guard shacks in the 800 Area, collected on May 20, 2026. Sample #63495, taken from Guard Shack #1, consisted of tan 12x12 floor tile with black mastic and tested positive for asbestos at a concentration of less than 1.0 percent. Sample #63496, collected from Guard Shack #2, comprised grey 12x12 vinyl floor tile with adhesive and tested positive for asbestos at a concentration of 2.0 percent. Both samples were analyzed by JMS Lab using Polarized Light Microscopy (PLM) through an AIHA-accredited, third-party laboratory. The report includes photographic documentation of both sample locations and materials, confirming the presence of asbestos-containing materials requiring appropriate handling and remediation procedures.