40 CFR § 53.6 - Right to witness conduct of tests.

---
identifier: "/us/cfr/t40/s53.6"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 53.6 - Right to witness conduct of tests."
title_number: 40
title_name: "Protection of Environment"
section_number: "53.6"
section_name: "Right to witness conduct of tests."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "53"
part_name: "AMBIENT AIR MONITORING REFERENCE AND EQUIVALENT METHODS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Sec. 301(a) of the Clean Air Act (42 U.S.C. sec. 1857g(a)), as amended by sec. 15(c)(2) of Pub. L. 91-604, 84 Stat. 1713, unless otherwise noted."
regulatory_source: "40 FR 7049, Feb. 18, 1975, unless otherwise noted."
cfr_part: "53"
---


# 53.6 Right to witness conduct of tests.

(a) Submission of an application for a reference or equivalent method determination shall constitute consent for the Administrator or the Administrator's authorized representative, upon presentation of appropriate credentials, to witness or observe any tests required by this part in connection with the application or in connection with any modification or intended modification of the method by the applicant.

(b) The applicant shall have the right to witness or observe any test conducted by the Administrator in connection with the application or in connection with any modification or intended modification of the method by the applicant.

(c) Any tests by either party that are to be witnessed or observed by the other party shall be conducted at a time and place mutually agreeable to both parties.