7 C.F.R. § 205.671 : Agriculture — REGULATIONS OF THE DEPARTMENT OF AGRICULTURE — AGRICULTURAL MARKETING SERVICE (STANDARDS, INSPECTIONS, MARKETING PRACTICES), DEPARTMENT OF AGRICULTURE — ORGANIC FOODS PRODUCTION ACT PROVISIONS — NATIONAL ORGANIC PROGRAM — ADMINISTRATIVE —INSPECTION AND TESTING, REPORTING, AND EXCLUSION FROM SALE — Exclusion from organic sale

When residue testing detects prohibited substances at levels that are greater than 5 percent of the Environmental Protection Agency's tolerance for the specific residue detected or unavoidable residual environmental contamination, the agricultural product must not be sold, labeled, or represented as organically produced. The Administrator, the applicable State organic program's governing State official, or the certifying agent may conduct an investigation of the certified operation to determine the cause of the prohibited substance.