The recordkeeping requirements for POTWs and Industrial Users subject to reporting requirements are outlined in 40 CFR 403.12(o). Records should be retained for a minimum of 3 years and should include for all samples:
- The date, exact place, method, and time of sampling and the names of the person or persons taking the samples;
- The dates analyses were performed;
- Who performed the analyses;
- The analytical techniques/methods used; and
- The results of the analyses.