40 CFR 60.423
§ 60.423 Monitoring of operations.
United States · 40 CFR — Protection of Environment · Status: effective
Cite this
- Citation
- 40 CFR 60.423, § 60.423 Monitoring of operations, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/171999
- Permanent ID
ys:prov:171999@1- SHA-256
c6112bfbe44d7c24525985a5c76c1a98aa9e1f99d9e12bff73a665ee0a7ad815
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
(a) The owner or operator of any ammonium sulfate manufacturing plant subject to the provisions of this subpart shall install, calibrate, maintain, and operate flow monitoring devices which can be used to determine the mass flow of ammonium sulfate feed material streams to the process. The flow monitoring device shall have an accuracy of ±5 percent over its range. However, if the plant uses weigh scales of the same accuracy to directly measure production rate of ammonium sulfate, the use of flow monitoring devices is not required.
(b) The owner or operator of any ammonium sulfate manufacturing plant subject to the provisions of this subpart shall install, calibrate, maintain, and operate a monitoring device which continuously measures and permanently records the total pressure drop across the emission control system. The monitoring device shall have an accuracy of ±5 percent over its operating range.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.