This guidance suggests an appropriate standard for determining when an synthetic organic contaminant (SOC) finding can be determined "no detect." It also discusses what is considered acceptable for the purposes of the trigger for decreased SOC monitoring.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Guidance and Clarification on the Use of Detection Limits in Compliance Monitoring (PDF)(4 pp, 8 K, December 1993, WSG 77)