Code of Federal Regulations > Title 40 > Chapter I > Part 63 > Subpart AA > Appendix - Table 1 to Subpart AA of Part 63

Regulations last checked for updates: May 16, 2024

Title 40 - Protection of Environment last revised: May 14, 2024

Appendix - Table 1 to Subpart AA of Part 63—Existing Source Emission Limits a b

For the following existing sources . . .	You must meet the emission limits for the specified pollutant . . .
For the following existing sources . . .	Total fluorides	Total particulate	Mercury
Wet-Process Phosphoric Acid Line	0.020 lb/ton of equivalent P2O5 feed
Superphosphoric Acid Process Line c	0.010 lb/ton of equivalent P2O5 feed
Superphosphoric Acid Process Line with a Submerged Combustion Process	0.20 lb/ton of equivalent P2O5 feed
Phosphate Rock Dryer		0.2150 lb/ton of phosphate rock feed
Phosphate Rock Calciner	9.0E-04 lb/ton of rock feed d	0.181 g/dscm	0.23 mg/dscm corrected to 3-percent oxygen e

a The existing source compliance data is June 10, 2002, except as noted.

b During periods of startup and shutdown, for emission limits stated in terms of pounds of pollutant per ton of feed, you are subject to the work practice standards specified in § 63.602(f).

c Beginning on August 19, 2018, you must include oxidation reactors in superphosphoric acid process lines when determining compliance with the total fluorides limit.

d Compliance date is August 19, 2015.

e Compliance date November 3, 2020.

[85 FR 69512, Nov. 3, 2020]

authority: 42 U.S.C. 7401

source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.