Retain records for two years after services performed then dispose of.
40 C.F.R. 51.214 (d); 40 C.F.R. 61.33 (e); 40 C.F.R. 61.34 (c); 40 C.F.R. 60.7 (f)
Confidential destruction is required. Paper must be shredded, pulped, or incinerated; electronic records must be overwritten or the storage media physically destroyed. Deletion of information in computer files or on electronic storage media is not sufficient.
Last Updated: December 31, 2008