40 CFR § 148.23 - Review of exemptions granted pursuant to a petition.

---
identifier: "/us/cfr/t40/s148.23"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 148.23 - Review of exemptions granted pursuant to a petition."
title_number: 40
title_name: "Protection of Environment"
section_number: "148.23"
section_name: "Review of exemptions granted pursuant to a petition."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "D"
subchapter_name: "WATER PROGRAMS"
part_number: "148"
part_name: "HAZARDOUS WASTE INJECTION RESTRICTIONS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "Secs. 3004, Resource Conservation and Recovery Act, 42 U.S.C. 6901"
regulatory_source: "53 FR 28154, July 26, 1988, unless otherwise noted."
cfr_part: "148"
---


# 148.23 Review of exemptions granted pursuant to a petition.

(a) When considering whether to reissue a permit for the operation of a Class I hazardous waste injection well, the Director shall review any petition filed pursuant to § 148.20 and require a new demonstration if information shows that the basis for granting the exemption may no longer be valid.

(b) Whenever the Director determines that the basis for approval of a petition may no longer be valid, the Director shall require a new demonstration in accordance with § 148.20.