This is a Request for Quotes for septic tank replacement, with an anticipated award to the lowest-priced, responsible offeror, possibly without discussions. A site visit will be held on August 21, 2026, at the Rajdamri Compound in Bangkok, with attendance limited to three personnel per company and advance registration required by August 19, 2026. Questions must be submitted in writing by August 24, 2026. Quotations must be submitted electronically in specified formats, and offerors must be registered in SAM prior to submission.