This is a firm-fixed-price commercial purchase order for grounds maintenance and irrigation services at the Ridgefield National Wildlife Refuge Headquarters in Ridgefield, Washington. The acquisition is a total small business set-aside under NAICS 561730, with award based on best overall value considering price and technical factors. Performance is from October 1, 2026, through September 30, 2027, with four one-year option periods extending through September 30, 2031. Offerors must submit a signed SF 1449, completed bid schedule with pricing, technical capability information, and proof of required licenses, and must have active SAM registration. A site visit is available and encouraged, and subcontractor information may be requested upon award.