40 CFR § 72.93 - Units with Phase I extension plans.

---
identifier: "/us/cfr/t40/s72.93"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 72.93 - Units with Phase I extension plans."
title_number: 40
title_name: "Protection of Environment"
section_number: "72.93"
section_name: "Units with Phase I extension plans."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "72"
part_name: "PERMITS REGULATION"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401, 7403, 7410, 7411, 7426, 7601,"
regulatory_source: "58 FR 3650, Jan. 11, 1993, unless otherwise noted."
cfr_part: "72"
---


# 72.93 Units with Phase I extension plans.

*Annual compliance certification report.* The designated representative for a control unit governed by a Phase I extension plan shall include in the unit's annual compliance certification report for calendar year 1997, the start-up test results upon which the vendor is released from liability under the vendor certification of guaranteed sulfur dioxide removal efficiency under § 72.42(c)(12).