SECTION J ATTACHMENTS.pdf

This is a Justification for Sole Source document under FAR 13.106(b) for the procurement of walk-in clean air stations and filter replacement kits. The estimated cost range is $15,000 to $350,000. The sole source manufacturer is DUALRAW LLC, located at 3701 Paris Street, Denver, CO 80239, with point of contact Angie Greimann at 303-853-4083.

The justification establishes that the Dual Draw walk-in clean air station is sole source due to its unique design features and specialized operational requirements. Key specifications include a work area of 94"W x 94"D x 96"H, airflow capacity of 8,000 CFM, three-sided enclosed construction with strip curtains, aluminum roof and sides, and a comprehensive filtration system featuring spark arrestors and HEPA final filters capable of maintaining 95% efficiency to 3.0 microns. Additional distinguishing features include a NEMA 12 control panel with variable frequency drive, vented back powerwall modules, removable dust pans, LED lighting, and air drawn through back filtration walls. The procurement references existing approval for use by C/106 and notes that the filter replacement kits are direct replacement parts for the existing equipment. The document is signed by Donna Todd, Contracting Officer, dated August 5, 2026, with supporting signatures from the Production Shop Planner dated July 30, 2026.