A prior section 9 of act June 25, 1947, was classified to section 135g of this title prior to amendment of act June 25, 1947, by Pub. L. 92–516.

1991—Subsec. (a)(2). Pub. L. 102–237, § 1006(b)(3)(H), substituted “the officer or employee” for “he” before “shall” in fourth sentence.

Subsec. (c)(1). Pub. L. 102–237, § 1006(b)(3)(I), substituted “the person’s” for “his” in third sentence.

Subsec. (c)(3). Pub. L. 102–237, § 1006(b)(1), substituted “the Administrator” for “he” before “believes”.

1988—Subsec. (a). Pub. L. 100–532, § 302(a), substituted “(1) For purposes of” for “For purposes of”, inserted “of the Environmental Protection Agency or of any State”, substituted “at reasonable times (A)” for “at reasonable times,”, added cl. (B), and substituted “(2) Before” for “Before”.

Subsec. (b)(1). Pub. L. 100–532, § 302(b), amended par. (1) generally, substituting “entry, inspection, and copying of records for purposes of this section or section 136f of this title” for “entry for the purpose of this section”.

Amendment by Pub. L. 100–532 effective on expiration of 60 days after Oct. 25, 1988, see section 901 of Pub. L. 100–532, set out as a note under section 136 of this title.

For effective date of section, see section 4 of Pub. L. 92–516, set out as a note under section 136 of this title.