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

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 . . .
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 ยง 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]