Onyx ranch svra project

The US Geological Survey is conducting market research to determine contractor availability for advanced statistical modeling and assistance at Onyx Ranch SVRA, with capability statements due September 4, 2026. No set-aside applies. NAICS 541620 (Environmental Consulting Services) and PSC B510 (Special Studies/Analysis—Environmental Assessments) govern this procurement, with a $19.0 million size standard.

The contractor must demonstrate advanced statistical expertise evidenced by peer-reviewed publications within the last 15 years and proficiency in general linear models, mixed effects models, k-means clustering, spatial analysis using ArcGIS, multivariate regression tree analyses, discriminant analysis, and nonparametric statistics. Work is performed at Onyx Ranch State Vehicle Recreation Area in the western Mojave Desert, California.

Deliverables include publication-quality maps and figures identifying desert tortoise locations relative to roads and park boundaries; perennial vegetation cluster analysis resulting in 4–6 distinct associations with distribution maps; distribution maps of invasive annual grasses and Sahara mustard; analysis and mapping of western Joshua tree distribution; spatial analysis of human disturbances including vehicle tracks, livestock grazing impacts, and campsites; and integrated models identifying the most important variables across all datasets. Initial drafts of vegetation, invasive species, and Joshua tree analyses are due 60 days after award, followed by a 15-day government review period. Model drafts are due 90 days after award with 30 days for finalization. The contractor will be compensated on an hourly rate basis. All deliverables become government property with potential USGS publication. Capability statements must be submitted electronically to yangzhi_deng@ios.doi.gov by 0800 PST on September 4, 2026.