CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER U—AIR POLLUTION CONTROLS (Parts 1027–1074) > PART 1048—CONTROL OF EMISSIONS FROM NEW, LARGE NONROAD SPARK-IGNITION ENGINES > SUBPART E—Testing In-use Engines (§1048.401 to §1048.425) > 1048.425—What records must I keep?

1048.425—What records must I keep?

(a) Organize and maintain your records as described in this section. We may review your records at any time.
(b) Keep paper records of your in-use testing for one full year after you complete all the testing required for an engine family in a model year. You may use any additional storage formats or media if you like.
(c) Keep a copy of the written reports described in § 1048.420.
(d) Keep any additional records related to the procurement process.

Code of Federal Regulations

[67 FR 68347, Nov. 8, 2002, as amended at 70 FR 40476, July 13, 2005]