40 CFR § 63.7907 - What are my inspection and monitoring requirements for surface impoundments?

---
identifier: "/us/cfr/t40/s63.7907"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 63.7907 - What are my inspection and monitoring requirements for surface impoundments?"
title_number: 40
title_name: "Protection of Environment"
section_number: "63.7907"
section_name: "What are my inspection and monitoring requirements for surface impoundments?"
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "63"
part_name: "NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
regulatory_source: "57 FR 61992, Dec. 29, 1992, unless otherwise noted."
cfr_part: "63"
---


# 63.7907 What are my inspection and monitoring requirements for surface impoundments?

(a) If you use a floating membrane cover according to § 63.7905(b)(1), you must visually inspect the floating membrane cover and its closure devices at least annually according to the requirements in § 63.946(a).

(b) If you use a cover vented to a control device according to § 63.7905(b)(2), you must meet requirements in paragraphs (b)(1) and (2) of this section.

(1) You must visually inspect the cover and its closure devices for defects according to the requirements in § 63.946(b).

(2) You must monitor and inspect the closed vent system and control device according to the requirements in § 63.7927 that apply to you.