Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
Appendix - Table 12 to Subpart G of Part 63—Monitoring Requirements for Treatment Processes
To comply with Parameters to be monitored Frequency Methods
1. Required mass removal of Table 8 and/or Table 9 compound(s) from wastewater treated in a properly operated biological treatment unit, § 63.138(f), and § 63.138(g)Appropriate parameters as specified in § 63.143(c) and approved by permitting authorityAppropriate frequency as specified in § 63.143 and approved by permitting authorityAppropriate methods as specified in § 63.143 and as approved by permitting authority.
2. Steam stripper(i) Steam flow rate; andContinuouslyIntegrating steam flow monitoring device equipped with a continuous recorder.
(ii) Wastewater feed mass flow rate; andContinuouslyLiquid flow meter installed at stripper influent and equipped with a continuous recorder.
(iii) Wastewater feed temperature; or
(iv) Column operating temperature
Continuously(A) Liquid temperature monitoring device installed at stripper influent and equipped with a continuous or recorder; or
(B) Liquid temperature monitoring device installed in the column top tray liquid phase (i.e., at the downcomer) and equipped with a continuous recorder.
3. Other treatment processes or alternative monitoring parameters to those listed in item 2 of this tableOther parameters may be monitored upon approval from the Administrator with the requirements specified in § 63.151(f)
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.