Chemical Analyses of soil and plant samples

The US Geological Survey is conducting market research to determine availability of qualified laboratories for chemical analyses of soil and plant samples, with responses due July 1, 2026 at 12:00 p.m. PST. This sources-sought announcement is not a formal solicitation and does not commit the Government to award. NAICS code 541380 (Testing Laboratory) with a $16.5 million size standard and PSC B504 apply.

The Southwest Biological Science Center, Canyonlands Research Station, requires analysis of approximately 5,100 plant and soil samples annually, submitted in batches of 100–500 samples depending on project requirements. Analytical scope includes soil testing (nitrate, phosphorous, potassium, organic matter, trace elements, pH, salinity, cation exchange capacity, texture, total nitrogen, carbon, particle size, and mineralizable nitrogen) and plant nutrient analysis (nitrogen, phosphorous, potassium, calcium, magnesium, sulfur, sodium, and trace elements, plus total nitrogen and carbon). Results must be delivered within three months of sample receipt. Statistical outliers identified by USGS scientists must be re-analyzed at no additional cost.

The laboratory facility must meet USGS quality assurance standards. The lab director must hold an advanced degree in soil chemistry and plant nutrition with specific experience analyzing desert soils. Work is performed year-round based on sample submission frequency, and no Government Furnished Property is provided.

Interested parties should submit capability statements detailing ability to meet the Statement of Work to yangzhi_deng@ios.doi.gov by the deadline. Hardcopy and web portal submissions will not be accepted.