This is a Request for Quotation for industrial hygiene and air quality testing services for the Defense Finance and Accounting Service. The evaluation will be based on the Lowest Price Technically Acceptable method, and a mandatory site visit is scheduled for April 27, 2026. Quotations must include a detailed technical approach, pricing, and a Certificate of Independent Technical Review. The performance location is not specified, and no budget information is provided. The government intends to award a single firm fixed-price purchase order.