Soil Fertility Testing IDIQ

The Department of Agriculture Agricultural Research Service seeks soil fertility testing services via an Indefinite Quantity, Indefinite Delivery contract with quotations due May 20, 2026 at 0900 ET. This is a Total Small Business Set-Aside; only small business concerns are eligible.

Place of performance is Pullman, Washington. The contractor will analyze approximately 933 air-dried soil samples collected from the R. J. Cook Agronomy Farm USDA-ARS Long-Term Agroecosystem Research Site under different agricultural management strategies. The contract consists of one base year (July 1, 2026 to July 1, 2027) and one optional year (July 1, 2027 to July 1, 2028), with a minimum order quantity of 90 samples and a maximum of 1,000 samples per ordering period. The contractor's laboratory must demonstrate two or more years of commercial competency in each required analytical method and hold quality certification or accreditation from recognized programs such as NAPT or ALTA. Required analyses encompass 14 soil properties including pH water, soil organic matter, electrical conductivity, nitrogen forms, phosphorus levels (Bray-1 and Olsen), cations, exchangeable aluminum, chloride, effervescence, lime requirements, cation exchange capacity, and total bases. Sample analysis results must be delivered within 90 days of sample receipt. The NAICS code is 541380, Testing Laboratories and Services, with a small business size standard of $19.0 million. Evaluation uses a lowest-price technically acceptable criterion; technical acceptability is rated acceptable or unacceptable based on ability to meet all Performance Work Statement and Quality Assurance Surveillance Plan requirements. Past performance will be evaluated as acceptable, neutral, or unacceptable using CPARS ratings and SAM.gov UEI information. Award will be made to one quoter. Quotations must be held firm for 30 calendar days from the offer due date. Payment is in arrears following delivery and acceptance, submitted electronically through the Department of Treasury's Invoice Processing Platform. The contracting officer is Christopher C. Turner (christopher.turner@usda.gov).