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42 U.S.C. 7401 et seq.
57 FR 61992, Dec. 29, 1992, unless otherwise noted.
77 FR 22906, Apr. 17, 2012, unless otherwise noted.
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(a) You must keep records for 5 years in a form suitable and readily available for expeditious review, as specified in § 63.10(b)(1).
(b) You must keep each record on site for at least 2 years, as specified in § 63.10(b)(1). You can keep the records off site for the remaining 3 years. Records may be maintained in hard copy or computer-readable format including, but not limited to, on paper, microfilm, hard disk drive, floppy disk, compact disk, magnetic tape or microfiche.