49 CFR § 107.309 - Warning letters.

---
identifier: "/us/cfr/t49/s107.309"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 107.309 - Warning letters."
title_number: 49
title_name: "Transportation"
section_number: "107.309"
section_name: "Warning letters."
chapter_name: "PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "A"
subchapter_name: "HAZARDOUS MATERIALS AND OIL TRANSPORTATION"
part_number: "107"
part_name: "HAZARDOUS MATERIALS PROGRAM PROCEDURES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 5101-5128, 44701; Pub. L. 101-410 Section 4; Pub. L. 104-121 Sections 212-213; Pub. L. 104-134 Section 31001; Pub. L. 114-74 Section 701 (28 U.S.C. 2461 note); 49 CFR 1.81 and 1.97; 33 U.S.C. 1321."
cfr_part: "107"
---


# 107.309 Warning letters.

(a) The Associate Administrator may issue a warning letter to any person whom the Associate Administrator believes to have committed a probable violation of the Federal hazardous material transportation law, the Federal Water Pollution Control Act, or any provision of this subchapter, subchapter B of this chapter, subchapter C of this chapter, or any special permit issued thereunder.

(b) A warning letter issued under this section includes:

(1) A statement of the facts upon which the Associate Administrator bases its determination that the person has committed a probable violation;

(2) A statement that the recurrence of the probable violations cited may subject the person to enforcement action; and

(3) An opportunity to respond to the warning letter by submitting pertinent information or explanations concerning the probable violations cited therein.

[Amdt. 107-11, 48 FR 2651, Jan. 20, 1983, as amended by Amdt. 107-15, 51 FR 34986, Oct. 1, 1986; Amdt. 107-24, 56 FR 8621, Feb. 28, 1991; Amdt. 107-32, 59 FR 49131, Sept. 26, 1994; Amdt. 107-36, 61 FR 7183, Feb. 26, 1996; 66 FR 45377, Aug. 28, 2001; 84 FR 6947, Feb. 28, 2019]