GOVERNMENT RECORD
EPA analytical methods and sampling resources
Agency resources for sewage-sludge sampling and laboratory methods.
Relevant excerpt or notes
Producer: United States Environmental Protection Agency Source class: Primary record or first-party statement. What it supports: Agency resources for sewage-sludge sampling and laboratory methods. Limitations: Methods guidance is not a Yuma laboratory result. Interpretation requires sample location, collection date, chain of custody, detection limits and quality controls. Publication date: not established in this review. Reviewed September 19, 2026.